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gerrit.cesnet.cz / github / CESNET / libyang / 63e080d0a25afc2a0e6d660b7abe97b596ead4a1 / . / src / parser_yang.c
blob: b62c54a021ebf8d9f3d5f09e54b4280bbfea6a0e [file] [log] [blame]
/**
* @file parser_yang.c
* @author Michal Vasko <mvasko@cesnet.cz>
* @brief YANG parser
*
* Copyright (c) 2018 CESNET, z.s.p.o.
*
* This source code is licensed under BSD 3-Clause License (the "License").
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*/
#include "parser_internal.h"
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "common.h"
#include "context.h"
#include "dict.h"
#include "in_internal.h"
#include "log.h"
#include "parser_schema.h"
#include "path.h"
#include "set.h"
#include "tree.h"
#include "tree_edit.h"
#include "tree_schema.h"
#include "tree_schema_internal.h"
struct lys_glob_unres;
/**
* @brief Insert WORD into the libyang context's dictionary and store as TARGET.
* @param[in] CTX yang parser context to access libyang context.
* @param[in] BUF buffer in case the word is not a constant and can be inserted directly (zero-copy)
* @param[out] TARGET variable where to store the pointer to the inserted value.
* @param[in] WORD string to store.
* @param[in] LEN length of the string in WORD to store.
*/
#define INSERT_WORD_RET(CTX, BUF, TARGET, WORD, LEN) \
if (BUF) {LY_CHECK_RET(lydict_insert_zc(PARSER_CTX(CTX), WORD, &(TARGET)));}\
else {LY_CHECK_RET(lydict_insert(PARSER_CTX(CTX), LEN ? WORD : "", LEN, &(TARGET)));}
/**
* @brief Read from the IN structure COUNT items. Also updates the indent value in yang parser context
* @param[in] CTX yang parser context to update its indent value.
* @param[in] COUNT number of items for which the DATA pointer is supposed to move on.
*/
#define MOVE_INPUT(CTX, COUNT) ly_in_skip((CTX)->in, COUNT);(CTX)->indent+=COUNT
/**
* @brief Loop through all substatements.
*
* @param[in] CTX yang parser context for logging.
* @param[out] KW YANG keyword read.
* @param[out] WORD Pointer to the keyword itself.
* @param[out] WORD_LEN Length of the keyword.
* @param[out] ERR Variable for error storing.
* @param[in] SUC_CMD Command is applied if a semicolon is found, so no
* substatements are available. It is expected to contain a return or goto command.
* @param[in] ERR_CMD Command is applied if an error occurs before loop through
* substatements. It is expected to contain return or goto command.
*
* @return In case there are no substatements or a fatal error encountered.
*/
#define YANG_READ_SUBSTMT_FOR(CTX, KW, WORD, WORD_LEN, ERR, SUC_CMD, ERR_CMD) \
if ((ERR = get_keyword(CTX, &KW, &WORD, &WORD_LEN))) { \
ERR_CMD; \
} \
if (KW == LY_STMT_SYNTAX_SEMICOLON) { \
SUC_CMD; \
} \
if (KW != LY_STMT_SYNTAX_LEFT_BRACE) { \
LOGVAL_PARSER(CTX, LYVE_SYNTAX_YANG, "Invalid keyword \"%s\", expected \";\" or \"{\".", ly_stmt2str(KW)); \
ERR = LY_EVALID; \
ERR_CMD; \
} \
for (ERR = get_keyword(CTX, &KW, &WORD, &WORD_LEN); \
!ERR && (KW != LY_STMT_SYNTAX_RIGHT_BRACE); \
ERR = get_keyword(CTX, &KW, &WORD, &WORD_LEN))
LY_ERR parse_container(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent,
struct lysp_node **siblings);
LY_ERR parse_uses(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
LY_ERR parse_choice(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
LY_ERR parse_case(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
LY_ERR parse_list(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings);
LY_ERR parse_grouping(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node_grp **groupings);
/**
* @brief Add another character to dynamic buffer, a low-level function.
*
* Enlarge if needed. Updates \p input as well as \p buf_used.
*
* @param[in] ctx libyang context for logging.
* @param[in,out] in Input structure.
* @param[in] len Number of bytes to get from the input string and copy into the buffer.
* @param[in,out] buf Buffer to use, can be moved by realloc().
* @param[in,out] buf_len Current size of the buffer.
* @param[in,out] buf_used Currently used characters of the buffer.
*
* @return LY_ERR values.
*/
LY_ERR
buf_add_char(struct ly_ctx *ctx, struct ly_in *in, size_t len, char **buf, size_t *buf_len, size_t *buf_used)
{
#define BUF_STEP 16;
if (*buf_len <= (*buf_used) + len) {
*buf_len += BUF_STEP;
*buf = ly_realloc(*buf, *buf_len);
LY_CHECK_ERR_RET(!*buf, LOGMEM(ctx), LY_EMEM);
}
if (*buf_used) {
ly_in_read(in, &(*buf)[*buf_used], len);
} else {
ly_in_read(in, *buf, len);
}
(*buf_used) += len;
return LY_SUCCESS;
#undef BUF_STEP
}
/**
* @brief Store a single UTF8 character. It depends whether in a dynamically-allocated buffer or just as a pointer to the data.
*
* @param[in] ctx yang parser context for logging.
* @param[in] arg Type of the input string to select method of checking character validity.
* @param[in,out] word_p Word pointer. If buffer (\p word_b) was not yet needed, it is just a pointer to the first
* stored character. If buffer was needed (\p word_b is non-NULL or \p need_buf is set), it is pointing to the buffer.
* @param[in,out] word_len Current length of the word pointed to by \p word_p.
* @param[in,out] word_b Word buffer. Is kept NULL as long as it is not requested (word is a substring of the data).
* @param[in,out] buf_len Current length of \p word_b.
* @param[in] need_buf Flag if the dynamically allocated buffer is required.
* @param[in,out] prefix Storage for internally used flag in case of possible prefixed identifiers:
* 0 - colon not yet found (no prefix)
* 1 - \p c is the colon character
* 2 - prefix already processed, now processing the identifier
*
* @return LY_ERR values.
*/
LY_ERR
buf_store_char(struct lys_yang_parser_ctx *ctx, enum yang_arg arg, char **word_p, size_t *word_len,
char **word_b, size_t *buf_len, ly_bool need_buf, uint8_t *prefix)
{
uint32_t c;
size_t len;
/* check valid combination of input paremeters - if need_buf specified, word_b must be provided */
assert(!need_buf || (need_buf && word_b));
/* get UTF8 code point (and number of bytes coding the character) */
LY_CHECK_ERR_RET(ly_getutf8(&ctx->in->current, &c, &len),
LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[-len]), LY_EVALID);
ctx->in->current -= len;
if (c == '\n') {
ctx->indent = 0;
LY_IN_NEW_LINE(ctx->in);
} else {
/* note - even the multibyte character is count as 1 */
++ctx->indent;
}
/* check character validity */
switch (arg) {
case Y_IDENTIF_ARG:
LY_CHECK_RET(lysp_check_identifierchar((struct lys_parser_ctx *)ctx, c, !(*word_len), NULL));
break;
case Y_PREF_IDENTIF_ARG:
LY_CHECK_RET(lysp_check_identifierchar((struct lys_parser_ctx *)ctx, c, !(*word_len), prefix));
break;
case Y_STR_ARG:
case Y_MAYBE_STR_ARG:
LY_CHECK_RET(lysp_check_stringchar((struct lys_parser_ctx *)ctx, c));
break;
}
if (word_b && *word_b) {
/* add another character into buffer */
if (buf_add_char(PARSER_CTX(ctx), ctx->in, len, word_b, buf_len, word_len)) {
return LY_EMEM;
}
/* in case of realloc */
*word_p = *word_b;
} else if (word_b && need_buf) {
/* first time we need a buffer, copy everything read up to now */
if (*word_len) {
*word_b = malloc(*word_len);
LY_CHECK_ERR_RET(!*word_b, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
*buf_len = *word_len;
memcpy(*word_b, *word_p, *word_len);
}
/* add this new character into buffer */
if (buf_add_char(PARSER_CTX(ctx), ctx->in, len, word_b, buf_len, word_len)) {
return LY_EMEM;
}
/* in case of realloc */
*word_p = *word_b;
} else {
/* just remember the first character pointer */
if (!*word_p) {
*word_p = (char *)ctx->in->current;
}
/* ... and update the word's length */
(*word_len) += len;
ly_in_skip(ctx->in, len);
}
return LY_SUCCESS;
}
/**
* @brief Skip YANG comment in data.
*
* @param[in] ctx yang parser context for logging.
* @param[in] comment Type of the comment to process:
* 1 for a one-line comment,
* 2 for a block comment.
* @return LY_ERR values.
*/
LY_ERR
skip_comment(struct lys_yang_parser_ctx *ctx, uint8_t comment)
{
/* internal statuses: */
#define COMMENT_NO 0 /* comment ended */
#define COMMENT_LINE 1 /* in line comment */
#define COMMENT_BLOCK 2 /* in block comment */
#define COMMENT_BLOCK_END 3 /* in block comment with last read character '*' */
while (ctx->in->current[0] && comment) {
switch (comment) {
case COMMENT_LINE:
if (ctx->in->current[0] == '\n') {
comment = COMMENT_NO;
LY_IN_NEW_LINE(ctx->in);
}
break;
case COMMENT_BLOCK:
if (ctx->in->current[0] == '*') {
comment = COMMENT_BLOCK_END;
} else if (ctx->in->current[0] == '\n') {
LY_IN_NEW_LINE(ctx->in);
}
break;
case COMMENT_BLOCK_END:
if (ctx->in->current[0] == '/') {
comment = COMMENT_NO;
} else if (ctx->in->current[0] != '*') {
if (ctx->in->current[0] == '\n') {
LY_IN_NEW_LINE(ctx->in);
}
comment = COMMENT_BLOCK;
}
break;
default:
LOGINT_RET(PARSER_CTX(ctx));
}
if (ctx->in->current[0] == '\n') {
ctx->indent = 0;
} else {
++ctx->indent;
}
++ctx->in->current;
}
if (!ctx->in->current[0] && (comment >= COMMENT_BLOCK)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX, "Unexpected end-of-input, non-terminated comment.");
return LY_EVALID;
}
return LY_SUCCESS;
#undef COMMENT_NO
#undef COMMENT_LINE
#undef COMMENT_BLOCK
#undef COMMENT_BLOCK_END
}
/**
* @brief Read a quoted string from data.
*
* @param[in] ctx yang parser context for logging.
* @param[in] arg Type of YANG keyword argument expected.
* @param[out] word_p Pointer to the read quoted string.
* @param[out] word_b Pointer to a dynamically-allocated buffer holding the read quoted string. If not needed,
* set to NULL. Otherwise equal to \p word_p.
* @param[out] word_len Length of the read quoted string.
* @param[out] buf_len Length of the dynamically-allocated buffer \p word_b.
* @param[in] indent Current indent (number of YANG spaces). Needed for correct multi-line string
* indenation in the final quoted string.
*
* @return LY_ERR values.
*/
static LY_ERR
read_qstring(struct lys_yang_parser_ctx *ctx, enum yang_arg arg, char **word_p, char **word_b,
size_t *word_len, size_t *buf_len)
{
/* string parsing status: */
#define STRING_ENDED 0 /* string ended */
#define STRING_SINGLE_QUOTED 1 /* string with ' */
#define STRING_DOUBLE_QUOTED 2 /* string with " */
#define STRING_DOUBLE_QUOTED_ESCAPED 3 /* string with " with last character \ */
#define STRING_PAUSED_NEXTSTRING 4 /* string finished, now skipping whitespaces looking for + */
#define STRING_PAUSED_CONTINUE 5 /* string continues after +, skipping whitespaces */
uint8_t string;
uint64_t block_indent = 0, current_indent = 0;
ly_bool need_buf = 0;
uint8_t prefix = 0;
const char *c;
uint64_t trailing_ws = 0; /* current number of stored trailing whitespace characters */
if (ctx->in->current[0] == '\"') {
string = STRING_DOUBLE_QUOTED;
current_indent = block_indent = ctx->indent + 1;
} else {
assert(ctx->in->current[0] == '\'');
string = STRING_SINGLE_QUOTED;
}
MOVE_INPUT(ctx, 1);
while (ctx->in->current[0] && string) {
switch (string) {
case STRING_SINGLE_QUOTED:
switch (ctx->in->current[0]) {
case '\'':
/* string may be finished, but check for + */
string = STRING_PAUSED_NEXTSTRING;
MOVE_INPUT(ctx, 1);
break;
default:
/* check and store character */
LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix));
break;
}
break;
case STRING_DOUBLE_QUOTED:
switch (ctx->in->current[0]) {
case '\"':
/* string may be finished, but check for + */
string = STRING_PAUSED_NEXTSTRING;
MOVE_INPUT(ctx, 1);
trailing_ws = 0;
break;
case '\\':
/* special character following */
string = STRING_DOUBLE_QUOTED_ESCAPED;
/* the backslash sequence is substituted, so we will need a buffer to store the result */
need_buf = 1;
/* move forward to the escaped character */
++ctx->in->current;
/* note that the trailing whitespaces are supposed to be trimmed before substitution of
* backslash-escaped characters (RFC 7950, 6.1.3), so we have to zero the trailing whitespaces counter */
trailing_ws = 0;
/* since the backslash-escaped character is handled as first non-whitespace character, stop eating indentation */
current_indent = block_indent;
break;
case ' ':
if (current_indent < block_indent) {
++current_indent;
MOVE_INPUT(ctx, 1);
} else {
/* check and store whitespace character */
LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix));
trailing_ws++;
}
break;
case '\t':
if (current_indent < block_indent) {
assert(need_buf);
current_indent += Y_TAB_SPACES;
ctx->indent += Y_TAB_SPACES;
for ( ; current_indent > block_indent; --current_indent, --ctx->indent) {
/* store leftover spaces from the tab */
c = ctx->in->current;
ctx->in->current = " ";
LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix));
ctx->in->current = c;
trailing_ws++;
}
++ctx->in->current;
} else {
/* check and store whitespace character */
LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix));
trailing_ws++;
/* additional characters for indentation - only 1 was count in buf_store_char */
ctx->indent += Y_TAB_SPACES - 1;
}
break;
case '\r':
if (ctx->in->current[1] != '\n') {
LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[0]);
return LY_EVALID;
}
/* fallthrough */
case '\n':
if (block_indent) {
/* we will be removing the indents so we need our own buffer */
need_buf = 1;
/* remove trailing tabs and spaces */
(*word_len) = *word_len - trailing_ws;
/* restart indentation */
current_indent = 0;
}
/* check and store character */
LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix));
/* reset context indentation counter for possible string after this one */
ctx->indent = 0;
trailing_ws = 0;
break;
default:
/* first non-whitespace character, stop eating indentation */
current_indent = block_indent;
/* check and store character */
LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix));
trailing_ws = 0;
break;
}
break;
case STRING_DOUBLE_QUOTED_ESCAPED:
/* string encoded characters */
c = ctx->in->current;
switch (ctx->in->current[0]) {
case 'n':
ctx->in->current = "\n";
/* fix false newline count in buf_store_char() */
ctx->in->line--;
break;
case 't':
ctx->in->current = "\t";
break;
case '\"':
case '\\':
/* ok as is */
break;
default:
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Double-quoted string unknown special character '\\%c'.",
ctx->in->current[0]);
return LY_EVALID;
}
/* check and store character */
LY_CHECK_RET(buf_store_char(ctx, arg, word_p, word_len, word_b, buf_len, need_buf, &prefix));
string = STRING_DOUBLE_QUOTED;
ctx->in->current = c + 1;
break;
case STRING_PAUSED_NEXTSTRING:
switch (ctx->in->current[0]) {
case '+':
/* string continues */
string = STRING_PAUSED_CONTINUE;
need_buf = 1;
break;
case '\r':
if (ctx->in->current[1] != '\n') {
LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[0]);
return LY_EVALID;
}
MOVE_INPUT(ctx, 1);
/* fallthrough */
case '\n':
LY_IN_NEW_LINE(ctx->in);
/* fall through */
case ' ':
case '\t':
/* just skip */
break;
default:
/* string is finished */
goto string_end;
}
MOVE_INPUT(ctx, 1);
break;
case STRING_PAUSED_CONTINUE:
switch (ctx->in->current[0]) {
case '\r':
if (ctx->in->current[1] != '\n') {
LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[0]);
return LY_EVALID;
}
MOVE_INPUT(ctx, 1);
/* fallthrough */
case '\n':
LY_IN_NEW_LINE(ctx->in);
/* fall through */
case ' ':
case '\t':
/* skip */
break;
case '\'':
string = STRING_SINGLE_QUOTED;
break;
case '\"':
string = STRING_DOUBLE_QUOTED;
break;
default:
/* it must be quoted again */
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Both string parts divided by '+' must be quoted.");
return LY_EVALID;
}
MOVE_INPUT(ctx, 1);
break;
default:
return LY_EINT;
}
}
string_end:
if ((arg <= Y_PREF_IDENTIF_ARG) && !(*word_len)) {
/* empty identifier */
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Statement argument is required.");
return LY_EVALID;
}
return LY_SUCCESS;
#undef STRING_ENDED
#undef STRING_SINGLE_QUOTED
#undef STRING_DOUBLE_QUOTED
#undef STRING_DOUBLE_QUOTED_ESCAPED
#undef STRING_PAUSED_NEXTSTRING
#undef STRING_PAUSED_CONTINUE
}
/**
* @brief Get another YANG string from the raw data.
*
* @param[in] ctx yang parser context for logging.
* @param[in] arg Type of YANG keyword argument expected.
* @param[out] flags optional output argument to get flag of the argument's quoting (LYS_*QUOTED - see
* [schema node flags](@ref snodeflags))
* @param[out] word_p Pointer to the read string. Can return NULL if \p arg is #Y_MAYBE_STR_ARG.
* @param[out] word_b Pointer to a dynamically-allocated buffer holding the read string. If not needed,
* set to NULL. Otherwise equal to \p word_p.
* @param[out] word_len Length of the read string.
* @return LY_ERR values.
*/
LY_ERR
get_argument(struct lys_yang_parser_ctx *ctx, enum yang_arg arg, uint16_t *flags, char **word_p,
char **word_b, size_t *word_len)
{
LY_ERR ret;
size_t buf_len = 0;
uint8_t prefix = 0;
/* word buffer - dynamically allocated */
*word_b = NULL;
/* word pointer - just a pointer to data */
*word_p = NULL;
*word_len = 0;
while (ctx->in->current[0]) {
switch (ctx->in->current[0]) {
case '\'':
case '\"':
if (*word_len) {
/* invalid - quotes cannot be in unquoted string and only optsep, ; or { can follow it */
LOGVAL_PARSER(ctx, LY_VCODE_INSTREXP, 1, ctx->in->current,
"unquoted string character, optsep, semicolon or opening brace");
ret = LY_EVALID;
goto error;
}
if (flags) {
(*flags) |= ctx->in->current[0] == '\'' ? LYS_SINGLEQUOTED : LYS_DOUBLEQUOTED;
}
LY_CHECK_GOTO(ret = read_qstring(ctx, arg, word_p, word_b, word_len, &buf_len), error);
goto str_end;
case '/':
if (ctx->in->current[1] == '/') {
/* one-line comment */
MOVE_INPUT(ctx, 2);
LY_CHECK_GOTO(ret = skip_comment(ctx, 1), error);
} else if (ctx->in->current[1] == '*') {
/* block comment */
MOVE_INPUT(ctx, 2);
LY_CHECK_GOTO(ret = skip_comment(ctx, 2), error);
} else {
/* not a comment after all */
LY_CHECK_GOTO(ret = buf_store_char(ctx, arg, word_p, word_len, word_b, &buf_len, 0, &prefix), error);
}
break;
case ' ':
if (*word_len) {
/* word is finished */
goto str_end;
}
MOVE_INPUT(ctx, 1);
break;
case '\t':
if (*word_len) {
/* word is finished */
goto str_end;
}
/* tabs count for 8 spaces */
ctx->indent += Y_TAB_SPACES;
++ctx->in->current;
break;
case '\r':
if (ctx->in->current[1] != '\n') {
LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[0]);
ret = LY_EVALID;
goto error;
}
MOVE_INPUT(ctx, 1);
/* fallthrough */
case '\n':
if (*word_len) {
/* word is finished */
goto str_end;
}
LY_IN_NEW_LINE(ctx->in);
MOVE_INPUT(ctx, 1);
/* reset indent */
ctx->indent = 0;
break;
case ';':
case '{':
if (*word_len || (arg == Y_MAYBE_STR_ARG)) {
/* word is finished */
goto str_end;
}
LOGVAL_PARSER(ctx, LY_VCODE_INSTREXP, 1, ctx->in->current, "an argument");
ret = LY_EVALID;
goto error;
case '}':
/* invalid - braces cannot be in unquoted string (opening braces terminates the string and can follow it) */
LOGVAL_PARSER(ctx, LY_VCODE_INSTREXP, 1, ctx->in->current,
"unquoted string character, optsep, semicolon or opening brace");
ret = LY_EVALID;
goto error;
default:
LY_CHECK_GOTO(ret = buf_store_char(ctx, arg, word_p, word_len, word_b, &buf_len, 0, &prefix), error);
break;
}
}
/* unexpected end of loop */
LOGVAL_PARSER(ctx, LY_VCODE_EOF);
ret = LY_EVALID;
goto error;
str_end:
/* terminating NULL byte for buf */
if (*word_b) {
(*word_b) = ly_realloc(*word_b, (*word_len) + 1);
LY_CHECK_ERR_RET(!(*word_b), LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
(*word_b)[*word_len] = '\0';
*word_p = *word_b;
}
return LY_SUCCESS;
error:
free(*word_b);
*word_b = NULL;
return ret;
}
/**
* @brief Get another YANG keyword from the raw data.
*
* @param[in] ctx yang parser context for logging.
* @param[out] kw YANG keyword read.
* @param[out] word_p Pointer to the keyword in the data. Useful for extension instances.
* @param[out] word_len Length of the keyword in the data. Useful for extension instances.
*
* @return LY_ERR values.
*/
LY_ERR
get_keyword(struct lys_yang_parser_ctx *ctx, enum ly_stmt *kw, char **word_p, size_t *word_len)
{
uint8_t prefix;
const char *word_start;
size_t len;
if (word_p) {
*word_p = NULL;
*word_len = 0;
}
/* first skip "optsep", comments */
while (ctx->in->current[0]) {
switch (ctx->in->current[0]) {
case '/':
if (ctx->in->current[1] == '/') {
/* one-line comment */
MOVE_INPUT(ctx, 2);
LY_CHECK_RET(skip_comment(ctx, 1));
} else if (ctx->in->current[1] == '*') {
/* block comment */
MOVE_INPUT(ctx, 2);
LY_CHECK_RET(skip_comment(ctx, 2));
} else {
/* error - not a comment after all, keyword cannot start with slash */
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Invalid identifier first character '/'.");
return LY_EVALID;
}
continue;
case '\n':
/* skip whitespaces (optsep) */
LY_IN_NEW_LINE(ctx->in);
ctx->indent = 0;
break;
case ' ':
/* skip whitespaces (optsep) */
++ctx->indent;
break;
case '\t':
/* skip whitespaces (optsep) */
ctx->indent += Y_TAB_SPACES;
break;
case '\r':
/* possible CRLF endline */
if (ctx->in->current[1] == '\n') {
break;
}
/* fallthrough */
default:
/* either a keyword start or an invalid character */
goto keyword_start;
}
ly_in_skip(ctx->in, 1);
}
keyword_start:
word_start = ctx->in->current;
*kw = lysp_match_kw(ctx->in, &ctx->indent);
if (*kw == LY_STMT_SYNTAX_SEMICOLON) {
goto success;
} else if (*kw == LY_STMT_SYNTAX_LEFT_BRACE) {
ctx->depth++;
if (ctx->depth > LY_MAX_BLOCK_DEPTH) {
LOGERR(ctx->parsed_mod->mod->ctx, LY_EINVAL,
"The maximum number of block nestings has been exceeded.");
return LY_EINVAL;
}
goto success;
} else if (*kw == LY_STMT_SYNTAX_RIGHT_BRACE) {
ctx->depth--;
goto success;
}
if (*kw != LY_STMT_NONE) {
/* make sure we have the whole keyword */
switch (ctx->in->current[0]) {
case '\r':
if (ctx->in->current[1] != '\n') {
LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[0]);
return LY_EVALID;
}
MOVE_INPUT(ctx, 1);
/* fallthrough */
case '\n':
case '\t':
case ' ':
/* mandatory "sep" is just checked, not eaten so nothing in the context is updated */
break;
case ':':
/* keyword is not actually a keyword, but prefix of an extension.
* To avoid repeated check of the prefix syntax, move to the point where the colon was read
* and we will be checking the keyword (extension instance) itself */
prefix = 1;
MOVE_INPUT(ctx, 1);
goto extension;
case '{':
/* allowed only for input and output statements which can be without arguments */
if ((*kw == LY_STMT_INPUT) || (*kw == LY_STMT_OUTPUT)) {
break;
}
/* fall through */
default:
MOVE_INPUT(ctx, 1);
LOGVAL_PARSER(ctx, LY_VCODE_INSTREXP, (int)(ctx->in->current - word_start), word_start,
"a keyword followed by a separator");
return LY_EVALID;
}
} else {
/* still can be an extension */
prefix = 0;
extension:
while (ctx->in->current[0] && (ctx->in->current[0] != ' ') && (ctx->in->current[0] != '\t') &&
(ctx->in->current[0] != '\n') && (ctx->in->current[0] != '\r') && (ctx->in->current[0] != '{') &&
(ctx->in->current[0] != ';')) {
uint32_t c = 0;
LY_CHECK_ERR_RET(ly_getutf8(&ctx->in->current, &c, &len),
LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, ctx->in->current[-len]), LY_EVALID);
++ctx->indent;
/* check character validity */
LY_CHECK_RET(lysp_check_identifierchar((struct lys_parser_ctx *)ctx, c,
ctx->in->current - len == word_start ? 1 : 0, &prefix));
}
if (!ctx->in->current[0]) {
LOGVAL_PARSER(ctx, LY_VCODE_EOF);
return LY_EVALID;
}
/* prefix is mandatory for extension instances */
if (prefix != 2) {
LOGVAL_PARSER(ctx, LY_VCODE_INSTREXP, (int)(ctx->in->current - word_start), word_start, "a keyword");
return LY_EVALID;
}
*kw = LY_STMT_EXTENSION_INSTANCE;
}
success:
if (word_p) {
*word_p = (char *)word_start;
*word_len = ctx->in->current - word_start;
}
return LY_SUCCESS;
}
/**
* @brief Parse extension instance substatements.
*
* @param[in] ctx yang parser context for logging.
* @param[in] kw Statement keyword value matching @p word value.
* @param[in] word Extension instance substatement name (keyword).
* @param[in] word_len Extension instance substatement name length.
* @param[in,out] child Children of this extension instance to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_ext_substmt(struct lys_yang_parser_ctx *ctx, enum ly_stmt kw, char *word, size_t word_len,
struct lysp_stmt **child)
{
char *buf;
LY_ERR ret = LY_SUCCESS;
enum ly_stmt child_kw;
struct lysp_stmt *stmt, *par_child;
stmt = calloc(1, sizeof *stmt);
LY_CHECK_ERR_RET(!stmt, LOGMEM(NULL), LY_EMEM);
/* insert into parent statements */
if (!*child) {
*child = stmt;
} else {
for (par_child = *child; par_child->next; par_child = par_child->next) {}
par_child->next = stmt;
}
/* statement */
LY_CHECK_RET(lydict_insert(PARSER_CTX(ctx), word, word_len, &stmt->stmt));
/* get optional argument */
LY_CHECK_RET(get_argument(ctx, Y_MAYBE_STR_ARG, &stmt->flags, &word, &buf, &word_len));
if (word) {
INSERT_WORD_RET(ctx, buf, stmt->arg, word, word_len);
}
stmt->format = LY_VALUE_SCHEMA;
stmt->prefix_data = ctx->parsed_mod;
stmt->kw = kw;
YANG_READ_SUBSTMT_FOR(ctx, child_kw, word, word_len, ret, return LY_SUCCESS, return ret) {
LY_CHECK_RET(parse_ext_substmt(ctx, child_kw, word, word_len, &stmt->child));
}
return ret;
}
/**
* @brief Parse extension instance.
*
* @param[in] ctx yang parser context for logging.
* @param[in] ext_name Extension instance substatement name (keyword).
* @param[in] ext_name_len Extension instance substatement name length.
* @param[in] insubstmt The statement this extension instance is a substatement of.
* @param[in] insubstmt_index Index of the keyword instance this extension instance is a substatement of.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_ext(struct lys_yang_parser_ctx *ctx, const char *ext_name, size_t ext_name_len, enum ly_stmt insubstmt,
LY_ARRAY_COUNT_TYPE insubstmt_index, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
struct lysp_ext_instance *e;
enum ly_stmt kw;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *exts, e, LY_EMEM);
if (!ly_strnchr(ext_name, ':', ext_name_len)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX, "Extension instance \"%*.s\" without the mandatory prefix.", ext_name_len, ext_name);
return LY_EVALID;
}
/* store name */
LY_CHECK_RET(lydict_insert(PARSER_CTX(ctx), ext_name, ext_name_len, &e->name));
/* get optional argument */
LY_CHECK_RET(get_argument(ctx, Y_MAYBE_STR_ARG, NULL, &word, &buf, &word_len));
if (word) {
INSERT_WORD_RET(ctx, buf, e->argument, word, word_len);
}
/* store the rest of information */
e->format = LY_VALUE_SCHEMA;
e->parsed = NULL;
e->prefix_data = ctx->parsed_mod;
e->parent_stmt = insubstmt;
e->parent_stmt_index = insubstmt_index;
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
LY_CHECK_RET(parse_ext_substmt(ctx, kw, word, word_len, &e->child));
}
return ret;
}
/**
* @brief Parse a generic text field without specific constraints. Those are contact, organization,
* description, etc...
*
* @param[in] ctx yang parser context for logging.
* @param[in] substmt Type of this substatement.
* @param[in] substmt_index Index of this substatement.
* @param[in,out] value Place to store the parsed value.
* @param[in] arg Type of the YANG keyword argument (of the value).
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_text_field(struct lys_yang_parser_ctx *ctx, enum ly_stmt substmt, uint32_t substmt_index,
const char **value, enum yang_arg arg, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (*value) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, ly_stmt2str(substmt));
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, arg, NULL, &word, &buf, &word_len));
/* store value and spend buf if allocated */
INSERT_WORD_RET(ctx, buf, *value, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, substmt, substmt_index, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), ly_stmt2str(substmt));
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the yang-version statement.
*
* @param[in] ctx yang parser context for logging.
* @param[out] version Storage for the parsed information.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_yangversion(struct lys_yang_parser_ctx *ctx, uint8_t *version, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (*version) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "yang-version");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if ((word_len == 1) && !strncmp(word, "1", word_len)) {
*version = LYS_VERSION_1_0;
} else if ((word_len == ly_strlen_const("1.1")) && !strncmp(word, "1.1", word_len)) {
*version = LYS_VERSION_1_1;
} else {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "yang-version");
free(buf);
return LY_EVALID;
}
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_YANG_VERSION, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "yang-version");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the belongs-to statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] prefix Place to store the parsed belongs-to prefix value.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_belongsto(struct lys_yang_parser_ctx *ctx, const char **prefix, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (*prefix) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "belongs-to");
return LY_EVALID;
}
/* get value, it must match the main module */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
if (ly_strncmp(ctx->parsed_mod->mod->name, word, word_len)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Submodule \"belongs-to\" value \"%.*s\" does not match its module name \"%s\".",
(int)word_len, word, ctx->parsed_mod->mod->name);
free(buf);
return LY_EVALID;
}
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
switch (kw) {
case LY_STMT_PREFIX:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_PREFIX, 0, prefix, Y_IDENTIF_ARG, exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_BELONGS_TO, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "belongs-to");
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
/* mandatory substatements */
if (!*prefix) {
LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "prefix", "belongs-to");
return LY_EVALID;
}
return ret;
}
/**
* @brief Parse the revision-date statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] rev Array to store the parsed value in.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_revisiondate(struct lys_yang_parser_ctx *ctx, char *rev, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (rev[0]) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "revision-date");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
/* check value */
if (lysp_check_date((struct lys_parser_ctx *)ctx, word, word_len, "revision-date")) {
free(buf);
return LY_EVALID;
}
/* store value and spend buf if allocated */
strncpy(rev, word, word_len);
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_REVISION_DATE, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "revision-date");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the include statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in] module_name Name of the module to check name collisions.
* @param[in,out] includes Parsed includes to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_include(struct lys_yang_parser_ctx *ctx, const char *module_name, struct lysp_include **includes)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_include *inc;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *includes, inc, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, inc->name, word, word_len);
/* submodules share the namespace with the module names, so there must not be
* a module of the same name in the context, no need for revision matching */
if (!strcmp(module_name, inc->name) || ly_ctx_get_module_latest(PARSER_CTX(ctx), inc->name)) {
LOGVAL_PARSER(ctx, LY_VCODE_NAME2_COL, "module", "submodule", inc->name);
return LY_EVALID;
}
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
PARSER_CHECK_STMTVER2_RET(ctx, "description", "include");
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &inc->dsc, Y_STR_ARG, &inc->exts));
break;
case LY_STMT_REFERENCE:
PARSER_CHECK_STMTVER2_RET(ctx, "reference", "include");
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &inc->ref, Y_STR_ARG, &inc->exts));
break;
case LY_STMT_REVISION_DATE:
LY_CHECK_RET(parse_revisiondate(ctx, inc->rev, &inc->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_INCLUDE, 0, &inc->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "include");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the import statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in] module_prefix Prefix of the module to check prefix collisions.
* @param[in,out] imports Parsed imports to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_import(struct lys_yang_parser_ctx *ctx, const char *module_prefix, struct lysp_import **imports)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_import *imp;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *imports, imp, LY_EVALID);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, imp->name, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
switch (kw) {
case LY_STMT_PREFIX:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_PREFIX, 0, &imp->prefix, Y_IDENTIF_ARG, &imp->exts));
LY_CHECK_RET(lysp_check_prefix((struct lys_parser_ctx *)ctx, *imports, module_prefix, &imp->prefix), LY_EVALID);
break;
case LY_STMT_DESCRIPTION:
PARSER_CHECK_STMTVER2_RET(ctx, "description", "import");
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &imp->dsc, Y_STR_ARG, &imp->exts));
break;
case LY_STMT_REFERENCE:
PARSER_CHECK_STMTVER2_RET(ctx, "reference", "import");
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &imp->ref, Y_STR_ARG, &imp->exts));
break;
case LY_STMT_REVISION_DATE:
LY_CHECK_RET(parse_revisiondate(ctx, imp->rev, &imp->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_IMPORT, 0, &imp->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "import");
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
/* mandatory substatements */
LY_CHECK_ERR_RET(!imp->prefix, LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "prefix", "import"), LY_EVALID);
return ret;
}
/**
* @brief Parse the revision statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] revs Parsed revisions to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_revision(struct lys_yang_parser_ctx *ctx, struct lysp_revision **revs)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_revision *rev;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *revs, rev, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
/* check value */
if (lysp_check_date((struct lys_parser_ctx *)ctx, word, word_len, "revision")) {
free(buf);
return LY_EVALID;
}
strncpy(rev->date, word, word_len);
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &rev->dsc, Y_STR_ARG, &rev->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &rev->ref, Y_STR_ARG, &rev->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_REVISION, 0, &rev->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "revision");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse a generic text field that can have more instances such as base.
*
* @param[in] ctx yang parser context for logging.
* @param[in] substmt Type of this substatement.
* @param[in,out] texts Parsed values to add to.
* @param[in] arg Type of the expected argument.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_text_fields(struct lys_yang_parser_ctx *ctx, enum ly_stmt substmt, const char ***texts, enum yang_arg arg,
struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
const char **item;
size_t word_len;
enum ly_stmt kw;
/* allocate new pointer */
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *texts, item, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, arg, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, *item, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, substmt, LY_ARRAY_COUNT(*texts) - 1, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), ly_stmt2str(substmt));
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse a generic text field that can have more instances such as base.
*
* @param[in] ctx yang parser context for logging.
* @param[in] substmt Type of this substatement.
* @param[in,out] qnames Parsed qnames to add to.
* @param[in] arg Type of the expected argument.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_qnames(struct lys_yang_parser_ctx *ctx, enum ly_stmt substmt, struct lysp_qname **qnames,
enum yang_arg arg, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
struct lysp_qname *item;
size_t word_len;
enum ly_stmt kw;
/* allocate new pointer */
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *qnames, item, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, arg, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, item->str, word, word_len);
item->mod = ctx->parsed_mod;
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, substmt, LY_ARRAY_COUNT(*qnames) - 1, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), ly_stmt2str(substmt));
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the config statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] flags Flags to add to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_config(struct lys_yang_parser_ctx *ctx, uint16_t *flags, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (*flags & LYS_CONFIG_MASK) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "config");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if ((word_len == ly_strlen_const("true")) && !strncmp(word, "true", word_len)) {
*flags |= LYS_CONFIG_W;
} else if ((word_len == ly_strlen_const("false")) && !strncmp(word, "false", word_len)) {
*flags |= LYS_CONFIG_R;
} else {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "config");
free(buf);
return LY_EVALID;
}
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_CONFIG, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "config");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the mandatory statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] flags Flags to add to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_mandatory(struct lys_yang_parser_ctx *ctx, uint16_t *flags, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (*flags & LYS_MAND_MASK) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "mandatory");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if ((word_len == ly_strlen_const("true")) && !strncmp(word, "true", word_len)) {
*flags |= LYS_MAND_TRUE;
} else if ((word_len == ly_strlen_const("false")) && !strncmp(word, "false", word_len)) {
*flags |= LYS_MAND_FALSE;
} else {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "mandatory");
free(buf);
return LY_EVALID;
}
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_MANDATORY, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "mandatory");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse a restriction such as range or length.
*
* @param[in] ctx yang parser context for logging.
* @param[in] restr_kw Type of this particular restriction.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_restr(struct lys_yang_parser_ctx *ctx, enum ly_stmt restr_kw, struct lysp_restr *restr)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
CHECK_NONEMPTY(ctx, word_len, ly_stmt2str(restr_kw));
INSERT_WORD_RET(ctx, buf, restr->arg.str, word, word_len);
restr->arg.mod = ctx->parsed_mod;
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &restr->dsc, Y_STR_ARG, &restr->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &restr->ref, Y_STR_ARG, &restr->exts));
break;
case LY_STMT_ERROR_APP_TAG:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_ERROR_APP_TAG, 0, &restr->eapptag, Y_STR_ARG, &restr->exts));
break;
case LY_STMT_ERROR_MESSAGE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_ERROR_MESSAGE, 0, &restr->emsg, Y_STR_ARG, &restr->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, restr_kw, 0, &restr->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), ly_stmt2str(restr_kw));
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse a restriction that can have more instances such as must.
*
* @param[in] ctx yang parser context for logging.
* @param[in] restr_kw Type of this particular restriction.
* @param[in,out] restrs Restrictions to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_restrs(struct lys_yang_parser_ctx *ctx, enum ly_stmt restr_kw, struct lysp_restr **restrs)
{
struct lysp_restr *restr;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *restrs, restr, LY_EMEM);
return parse_restr(ctx, restr_kw, restr);
}
/**
* @brief Parse the status statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] flags Flags to add to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_status(struct lys_yang_parser_ctx *ctx, uint16_t *flags, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (*flags & LYS_STATUS_MASK) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "status");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if ((word_len == ly_strlen_const("current")) && !strncmp(word, "current", word_len)) {
*flags |= LYS_STATUS_CURR;
} else if ((word_len == ly_strlen_const("deprecated")) && !strncmp(word, "deprecated", word_len)) {
*flags |= LYS_STATUS_DEPRC;
} else if ((word_len == ly_strlen_const("obsolete")) && !strncmp(word, "obsolete", word_len)) {
*flags |= LYS_STATUS_OBSLT;
} else {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "status");
free(buf);
return LY_EVALID;
}
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_STATUS, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "status");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the when statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] when_p When pointer to parse to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_when(struct lys_yang_parser_ctx *ctx, struct lysp_when **when_p)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_when *when;
if (*when_p) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "when");
return LY_EVALID;
}
when = calloc(1, sizeof *when);
LY_CHECK_ERR_RET(!when, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
*when_p = when;
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
CHECK_NONEMPTY(ctx, word_len, "when");
INSERT_WORD_RET(ctx, buf, when->cond, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &when->dsc, Y_STR_ARG, &when->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &when->ref, Y_STR_ARG, &when->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_WHEN, 0, &when->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "when");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the anydata or anyxml statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in] any_kw Type of this particular keyword.
* @param[in,out] siblings Siblings to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_any(struct lys_yang_parser_ctx *ctx, enum ly_stmt any_kw, struct lysp_node *parent, struct lysp_node **siblings)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
struct lysp_node_anydata *any;
enum ly_stmt kw;
/* create new structure and insert into siblings */
LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, any, next, LY_EMEM);
any->nodetype = any_kw == LY_STMT_ANYDATA ? LYS_ANYDATA : LYS_ANYXML;
any->parent = parent;
/* get name */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, any->name, word, word_len);
/* parse substatements */
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_CONFIG:
LY_CHECK_RET(parse_config(ctx, &any->flags, &any->exts));
break;
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &any->dsc, Y_STR_ARG, &any->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &any->iffeatures, Y_STR_ARG, &any->exts));
break;
case LY_STMT_MANDATORY:
LY_CHECK_RET(parse_mandatory(ctx, &any->flags, &any->exts));
break;
case LY_STMT_MUST:
LY_CHECK_RET(parse_restrs(ctx, kw, &any->musts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &any->ref, Y_STR_ARG, &any->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &any->flags, &any->exts));
break;
case LY_STMT_WHEN:
LY_CHECK_RET(parse_when(ctx, &any->when));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, any_kw, 0, &any->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), ly_stmt2str(any_kw));
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the value or position statement. Substatement of type enum statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in] val_kw Type of this particular keyword.
* @param[in,out] value Value to write to.
* @param[in,out] flags Flags to write to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_type_enum_value_pos(struct lys_yang_parser_ctx *ctx, enum ly_stmt val_kw, int64_t *value, uint16_t *flags,
struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word, *ptr;
size_t word_len;
long int num = 0;
unsigned long int unum = 0;
enum ly_stmt kw;
if (*flags & LYS_SET_VALUE) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, ly_stmt2str(val_kw));
return LY_EVALID;
}
*flags |= LYS_SET_VALUE;
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if (!word_len || (word[0] == '+') || ((word[0] == '0') && (word_len > 1)) || ((val_kw == LY_STMT_POSITION) && !strncmp(word, "-0", 2))) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, ly_stmt2str(val_kw));
goto error;
}
errno = 0;
if (val_kw == LY_STMT_VALUE) {
num = strtol(word, &ptr, LY_BASE_DEC);
if ((num < INT64_C(-2147483648)) || (num > INT64_C(2147483647))) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, ly_stmt2str(val_kw));
goto error;
}
} else {
unum = strtoul(word, &ptr, LY_BASE_DEC);
if (unum > UINT64_C(4294967295)) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, ly_stmt2str(val_kw));
goto error;
}
}
/* we have not parsed the whole argument */
if ((size_t)(ptr - word) != word_len) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, ly_stmt2str(val_kw));
goto error;
}
if (errno == ERANGE) {
LOGVAL_PARSER(ctx, LY_VCODE_OOB, word_len, word, ly_stmt2str(val_kw));
goto error;
}
if (val_kw == LY_STMT_VALUE) {
*value = num;
} else {
*value = unum;
}
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, val_kw == LY_STMT_VALUE ? LY_STMT_VALUE : LY_STMT_POSITION, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), ly_stmt2str(val_kw));
return LY_EVALID;
}
}
return ret;
error:
free(buf);
return LY_EVALID;
}
/**
* @brief Parse the enum or bit statement. Substatement of type statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in] enum_kw Type of this particular keyword.
* @param[in,out] enums Enums or bits to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_type_enum(struct lys_yang_parser_ctx *ctx, enum ly_stmt enum_kw, struct lysp_type_enum **enums)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_type_enum *enm;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *enums, enm, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, enum_kw == LY_STMT_ENUM ? Y_STR_ARG : Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
if (enum_kw == LY_STMT_ENUM) {
ret = lysp_check_enum_name((struct lys_parser_ctx *)ctx, (const char *)word, word_len);
LY_CHECK_ERR_RET(ret, free(buf), ret);
} /* else nothing specific for YANG_BIT */
INSERT_WORD_RET(ctx, buf, enm->name, word, word_len);
CHECK_UNIQUENESS(ctx, *enums, name, ly_stmt2str(enum_kw), enm->name);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &enm->dsc, Y_STR_ARG, &enm->exts));
break;
case LY_STMT_IF_FEATURE:
PARSER_CHECK_STMTVER2_RET(ctx, "if-feature", ly_stmt2str(enum_kw));
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &enm->iffeatures, Y_STR_ARG, &enm->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &enm->ref, Y_STR_ARG, &enm->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &enm->flags, &enm->exts));
break;
case LY_STMT_VALUE:
LY_CHECK_ERR_RET(enum_kw == LY_STMT_BIT, LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw),
ly_stmt2str(enum_kw)), LY_EVALID);
LY_CHECK_RET(parse_type_enum_value_pos(ctx, kw, &enm->value, &enm->flags, &enm->exts));
break;
case LY_STMT_POSITION:
LY_CHECK_ERR_RET(enum_kw == LY_STMT_ENUM, LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw),
ly_stmt2str(enum_kw)), LY_EVALID);
LY_CHECK_RET(parse_type_enum_value_pos(ctx, kw, &enm->value, &enm->flags, &enm->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, enum_kw, 0, &enm->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), ly_stmt2str(enum_kw));
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the fraction-digits statement. Substatement of type statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] fracdig Value to write to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_type_fracdigits(struct lys_yang_parser_ctx *ctx, uint8_t *fracdig, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word, *ptr;
size_t word_len;
unsigned long int num;
enum ly_stmt kw;
if (*fracdig) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "fraction-digits");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if (!word_len || (word[0] == '0') || !isdigit(word[0])) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "fraction-digits");
free(buf);
return LY_EVALID;
}
errno = 0;
num = strtoul(word, &ptr, LY_BASE_DEC);
/* we have not parsed the whole argument */
if ((size_t)(ptr - word) != word_len) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "fraction-digits");
free(buf);
return LY_EVALID;
}
if ((errno == ERANGE) || (num > LY_TYPE_DEC64_FD_MAX)) {
LOGVAL_PARSER(ctx, LY_VCODE_OOB, word_len, word, "fraction-digits");
free(buf);
return LY_EVALID;
}
*fracdig = num;
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_FRACTION_DIGITS, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "fraction-digits");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the require-instance statement. Substatement of type statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] reqinst Value to write to.
* @param[in,out] flags Flags to write to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_type_reqinstance(struct lys_yang_parser_ctx *ctx, uint8_t *reqinst, uint16_t *flags,
struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (*flags & LYS_SET_REQINST) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "require-instance");
return LY_EVALID;
}
*flags |= LYS_SET_REQINST;
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if ((word_len == ly_strlen_const("true")) && !strncmp(word, "true", word_len)) {
*reqinst = 1;
} else if ((word_len != ly_strlen_const("false")) || strncmp(word, "false", word_len)) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "require-instance");
free(buf);
return LY_EVALID;
}
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_REQUIRE_INSTANCE, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "require-instance");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the modifier statement. Substatement of type pattern statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] pat Value to write to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_type_pattern_modifier(struct lys_yang_parser_ctx *ctx, const char **pat, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if ((*pat)[0] == LYSP_RESTR_PATTERN_NACK) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "modifier");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if ((word_len != ly_strlen_const("invert-match")) || strncmp(word, "invert-match", word_len)) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "modifier");
free(buf);
return LY_EVALID;
}
free(buf);
/* replace the value in the dictionary */
buf = malloc(strlen(*pat) + 1);
LY_CHECK_ERR_RET(!buf, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
strcpy(buf, *pat);
lydict_remove(PARSER_CTX(ctx), *pat);
assert(buf[0] == LYSP_RESTR_PATTERN_ACK);
buf[0] = LYSP_RESTR_PATTERN_NACK;
LY_CHECK_RET(lydict_insert_zc(PARSER_CTX(ctx), buf, pat));
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_MODIFIER, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "modifier");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the pattern statement. Substatement of type statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] patterns Restrictions to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_type_pattern(struct lys_yang_parser_ctx *ctx, struct lysp_restr **patterns)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_restr *restr;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *patterns, restr, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
/* add special meaning first byte */
if (buf) {
buf = ly_realloc(buf, word_len + 2);
word = buf;
} else {
buf = malloc(word_len + 2);
}
LY_CHECK_ERR_RET(!buf, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
if (word_len) {
memmove(buf + 1, word, word_len);
}
buf[0] = LYSP_RESTR_PATTERN_ACK; /* pattern's default regular-match flag */
buf[word_len + 1] = '\0'; /* terminating NULL byte */
LY_CHECK_RET(lydict_insert_zc(PARSER_CTX(ctx), buf, &restr->arg.str));
restr->arg.mod = ctx->parsed_mod;
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &restr->dsc, Y_STR_ARG, &restr->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &restr->ref, Y_STR_ARG, &restr->exts));
break;
case LY_STMT_ERROR_APP_TAG:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_ERROR_APP_TAG, 0, &restr->eapptag, Y_STR_ARG, &restr->exts));
break;
case LY_STMT_ERROR_MESSAGE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_ERROR_MESSAGE, 0, &restr->emsg, Y_STR_ARG, &restr->exts));
break;
case LY_STMT_MODIFIER:
PARSER_CHECK_STMTVER2_RET(ctx, "modifier", "pattern");
LY_CHECK_RET(parse_type_pattern_modifier(ctx, &restr->arg.str, &restr->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_PATTERN, 0, &restr->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "pattern");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the type statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] type Type to wrote to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_type(struct lys_yang_parser_ctx *ctx, struct lysp_type *type)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
const char *str_path = NULL;
size_t word_len;
enum ly_stmt kw;
struct lysp_type *nest_type;
if (type->name) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "type");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_PREF_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, type->name, word, word_len);
/* set module */
type->pmod = ctx->parsed_mod;
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_BASE:
LY_CHECK_RET(parse_text_fields(ctx, LY_STMT_BASE, &type->bases, Y_PREF_IDENTIF_ARG, &type->exts));
type->flags |= LYS_SET_BASE;
break;
case LY_STMT_BIT:
LY_CHECK_RET(parse_type_enum(ctx, kw, &type->bits));
type->flags |= LYS_SET_BIT;
break;
case LY_STMT_ENUM:
LY_CHECK_RET(parse_type_enum(ctx, kw, &type->enums));
type->flags |= LYS_SET_ENUM;
break;
case LY_STMT_FRACTION_DIGITS:
LY_CHECK_RET(parse_type_fracdigits(ctx, &type->fraction_digits, &type->exts));
type->flags |= LYS_SET_FRDIGITS;
break;
case LY_STMT_LENGTH:
if (type->length) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, ly_stmt2str(kw));
return LY_EVALID;
}
type->length = calloc(1, sizeof *type->length);
LY_CHECK_ERR_RET(!type->length, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
LY_CHECK_RET(parse_restr(ctx, kw, type->length));
type->flags |= LYS_SET_LENGTH;
break;
case LY_STMT_PATH:
if (type->path) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, ly_stmt2str(LY_STMT_PATH));
return LY_EVALID;
}
/* Usually, in the parser_yang.c, the result of the parsing is stored directly in the
* corresponding structure, so in case of failure, the lysp_module_free function will take
* care of removing the parsed value from the dictionary. But in this case, it is not possible
* to rely on lysp_module_free because the result of the parsing is stored in a local variable.
*/
LY_CHECK_ERR_RET(ret = parse_text_field(ctx, LY_STMT_PATH, 0, &str_path, Y_STR_ARG, &type->exts),
lydict_remove(PARSER_CTX(ctx), str_path), ret);
ret = ly_path_parse(PARSER_CTX(ctx), NULL, str_path, 0, 1, LY_PATH_BEGIN_EITHER,
LY_PATH_PREFIX_OPTIONAL, LY_PATH_PRED_LEAFREF, &type->path);
/* Moreover, even if successful, the string is removed from the dictionary. */
lydict_remove(PARSER_CTX(ctx), str_path);
LY_CHECK_RET(ret);
type->flags |= LYS_SET_PATH;
break;
case LY_STMT_PATTERN:
LY_CHECK_RET(parse_type_pattern(ctx, &type->patterns));
type->flags |= LYS_SET_PATTERN;
break;
case LY_STMT_RANGE:
if (type->range) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, ly_stmt2str(kw));
return LY_EVALID;
}
type->range = calloc(1, sizeof *type->range);
LY_CHECK_ERR_RET(!type->range, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
LY_CHECK_RET(parse_restr(ctx, kw, type->range));
type->flags |= LYS_SET_RANGE;
break;
case LY_STMT_REQUIRE_INSTANCE:
LY_CHECK_RET(parse_type_reqinstance(ctx, &type->require_instance, &type->flags, &type->exts));
/* LYS_SET_REQINST checked and set inside parse_type_reqinstance() */
break;
case LY_STMT_TYPE:
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), type->types, nest_type, LY_EMEM);
LY_CHECK_RET(parse_type(ctx, nest_type));
type->flags |= LYS_SET_TYPE;
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_TYPE, 0, &type->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "type");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the leaf statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] siblings Siblings to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_leaf(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_leaf *leaf;
/* create new leaf structure */
LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, leaf, next, LY_EMEM);
leaf->nodetype = LYS_LEAF;
leaf->parent = parent;
/* get name */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, leaf->name, word, word_len);
/* parse substatements */
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
switch (kw) {
case LY_STMT_CONFIG:
LY_CHECK_RET(parse_config(ctx, &leaf->flags, &leaf->exts));
break;
case LY_STMT_DEFAULT:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DEFAULT, 0, &leaf->dflt.str, Y_STR_ARG, &leaf->exts));
leaf->dflt.mod = ctx->parsed_mod;
break;
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &leaf->dsc, Y_STR_ARG, &leaf->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &leaf->iffeatures, Y_STR_ARG, &leaf->exts));
break;
case LY_STMT_MANDATORY:
LY_CHECK_RET(parse_mandatory(ctx, &leaf->flags, &leaf->exts));
break;
case LY_STMT_MUST:
LY_CHECK_RET(parse_restrs(ctx, kw, &leaf->musts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &leaf->ref, Y_STR_ARG, &leaf->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &leaf->flags, &leaf->exts));
break;
case LY_STMT_TYPE:
LY_CHECK_RET(parse_type(ctx, &leaf->type));
break;
case LY_STMT_UNITS:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_UNITS, 0, &leaf->units, Y_STR_ARG, &leaf->exts));
break;
case LY_STMT_WHEN:
LY_CHECK_RET(parse_when(ctx, &leaf->when));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_LEAF, 0, &leaf->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "leaf");
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
/* mandatory substatements */
if (!leaf->type.name) {
LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "type", "leaf");
return LY_EVALID;
}
return ret;
}
/**
* @brief Parse the max-elements statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] max Value to write to.
* @param[in,out] flags Flags to write to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_maxelements(struct lys_yang_parser_ctx *ctx, uint32_t *max, uint16_t *flags, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word, *ptr;
size_t word_len;
unsigned long int num;
enum ly_stmt kw;
if (*flags & LYS_SET_MAX) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "max-elements");
return LY_EVALID;
}
*flags |= LYS_SET_MAX;
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if (!word_len || (word[0] == '0') || ((word[0] != 'u') && !isdigit(word[0]))) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "max-elements");
free(buf);
return LY_EVALID;
}
if (ly_strncmp("unbounded", word, word_len)) {
errno = 0;
num = strtoul(word, &ptr, LY_BASE_DEC);
/* we have not parsed the whole argument */
if ((size_t)(ptr - word) != word_len) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "max-elements");
free(buf);
return LY_EVALID;
}
if ((errno == ERANGE) || (num > UINT32_MAX)) {
LOGVAL_PARSER(ctx, LY_VCODE_OOB, word_len, word, "max-elements");
free(buf);
return LY_EVALID;
}
*max = num;
} else {
/* unbounded */
*max = 0;
}
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_MAX_ELEMENTS, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "max-elements");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the min-elements statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] min Value to write to.
* @param[in,out] flags Flags to write to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_minelements(struct lys_yang_parser_ctx *ctx, uint32_t *min, uint16_t *flags, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word, *ptr;
size_t word_len;
unsigned long int num;
enum ly_stmt kw;
if (*flags & LYS_SET_MIN) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "min-elements");
return LY_EVALID;
}
*flags |= LYS_SET_MIN;
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if (!word_len || !isdigit(word[0]) || ((word[0] == '0') && (word_len > 1))) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "min-elements");
free(buf);
return LY_EVALID;
}
errno = 0;
num = strtoul(word, &ptr, LY_BASE_DEC);
/* we have not parsed the whole argument */
if ((size_t)(ptr - word) != word_len) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "min-elements");
free(buf);
return LY_EVALID;
}
if ((errno == ERANGE) || (num > UINT32_MAX)) {
LOGVAL_PARSER(ctx, LY_VCODE_OOB, word_len, word, "min-elements");
free(buf);
return LY_EVALID;
}
*min = num;
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_MIN_ELEMENTS, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "min-elements");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the ordered-by statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] flags Flags to write to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_orderedby(struct lys_yang_parser_ctx *ctx, uint16_t *flags, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (*flags & LYS_ORDBY_MASK) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "ordered-by");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if ((word_len == ly_strlen_const("system")) && !strncmp(word, "system", word_len)) {
*flags |= LYS_ORDBY_SYSTEM;
} else if ((word_len == ly_strlen_const("user")) && !strncmp(word, "user", word_len)) {
*flags |= LYS_ORDBY_USER;
} else {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "ordered-by");
free(buf);
return LY_EVALID;
}
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_ORDERED_BY, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "ordered-by");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the leaf-list statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] siblings Siblings to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_leaflist(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_leaflist *llist;
/* create new leaf-list structure */
LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, llist, next, LY_EMEM);
llist->nodetype = LYS_LEAFLIST;
llist->parent = parent;
/* get name */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, llist->name, word, word_len);
/* parse substatements */
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
switch (kw) {
case LY_STMT_CONFIG:
LY_CHECK_RET(parse_config(ctx, &llist->flags, &llist->exts));
break;
case LY_STMT_DEFAULT:
PARSER_CHECK_STMTVER2_RET(ctx, "default", "leaf-list");
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_DEFAULT, &llist->dflts, Y_STR_ARG, &llist->exts));
break;
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &llist->dsc, Y_STR_ARG, &llist->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &llist->iffeatures, Y_STR_ARG, &llist->exts));
break;
case LY_STMT_MAX_ELEMENTS:
LY_CHECK_RET(parse_maxelements(ctx, &llist->max, &llist->flags, &llist->exts));
break;
case LY_STMT_MIN_ELEMENTS:
LY_CHECK_RET(parse_minelements(ctx, &llist->min, &llist->flags, &llist->exts));
break;
case LY_STMT_MUST:
LY_CHECK_RET(parse_restrs(ctx, kw, &llist->musts));
break;
case LY_STMT_ORDERED_BY:
LY_CHECK_RET(parse_orderedby(ctx, &llist->flags, &llist->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &llist->ref, Y_STR_ARG, &llist->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &llist->flags, &llist->exts));
break;
case LY_STMT_TYPE:
LY_CHECK_RET(parse_type(ctx, &llist->type));
break;
case LY_STMT_UNITS:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_UNITS, 0, &llist->units, Y_STR_ARG, &llist->exts));
break;
case LY_STMT_WHEN:
LY_CHECK_RET(parse_when(ctx, &llist->when));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_LEAF_LIST, 0, &llist->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "llist");
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
/* mandatory substatements */
if (!llist->type.name) {
LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "type", "leaf-list");
return LY_EVALID;
}
return ret;
}
/**
* @brief Parse the refine statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] refines Refines to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_refine(struct lys_yang_parser_ctx *ctx, struct lysp_refine **refines)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_refine *rf;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *refines, rf, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
CHECK_NONEMPTY(ctx, word_len, "refine");
INSERT_WORD_RET(ctx, buf, rf->nodeid, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_CONFIG:
LY_CHECK_RET(parse_config(ctx, &rf->flags, &rf->exts));
break;
case LY_STMT_DEFAULT:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_DEFAULT, &rf->dflts, Y_STR_ARG, &rf->exts));
break;
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &rf->dsc, Y_STR_ARG, &rf->exts));
break;
case LY_STMT_IF_FEATURE:
PARSER_CHECK_STMTVER2_RET(ctx, "if-feature", "refine");
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &rf->iffeatures, Y_STR_ARG, &rf->exts));
break;
case LY_STMT_MAX_ELEMENTS:
LY_CHECK_RET(parse_maxelements(ctx, &rf->max, &rf->flags, &rf->exts));
break;
case LY_STMT_MIN_ELEMENTS:
LY_CHECK_RET(parse_minelements(ctx, &rf->min, &rf->flags, &rf->exts));
break;
case LY_STMT_MUST:
LY_CHECK_RET(parse_restrs(ctx, kw, &rf->musts));
break;
case LY_STMT_MANDATORY:
LY_CHECK_RET(parse_mandatory(ctx, &rf->flags, &rf->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &rf->ref, Y_STR_ARG, &rf->exts));
break;
case LY_STMT_PRESENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_PRESENCE, 0, &rf->presence, Y_STR_ARG, &rf->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_REFINE, 0, &rf->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "refine");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the typedef statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] typedefs Typedefs to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_typedef(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_tpdf **typedefs)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_tpdf *tpdf;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *typedefs, tpdf, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, tpdf->name, word, word_len);
/* parse substatements */
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
switch (kw) {
case LY_STMT_DEFAULT:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DEFAULT, 0, &tpdf->dflt.str, Y_STR_ARG, &tpdf->exts));
tpdf->dflt.mod = ctx->parsed_mod;
break;
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &tpdf->dsc, Y_STR_ARG, &tpdf->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &tpdf->ref, Y_STR_ARG, &tpdf->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &tpdf->flags, &tpdf->exts));
break;
case LY_STMT_TYPE:
LY_CHECK_RET(parse_type(ctx, &tpdf->type));
break;
case LY_STMT_UNITS:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_UNITS, 0, &tpdf->units, Y_STR_ARG, &tpdf->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_TYPEDEF, 0, &tpdf->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "typedef");
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
/* mandatory substatements */
if (!tpdf->type.name) {
LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "type", "typedef");
return LY_EVALID;
}
/* store data for collision check */
if (parent) {
assert(ctx->main_ctx);
LY_CHECK_RET(ly_set_add(&ctx->main_ctx->tpdfs_nodes, parent, 0, NULL));
}
return ret;
}
/**
* @brief Parse the input or output statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in] kw Type of this particular keyword
* @param[in,out] inout_p Input/output pointer to write to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_inout(struct lys_yang_parser_ctx *ctx, enum ly_stmt inout_kw, struct lysp_node *parent,
struct lysp_node_action_inout *inout_p)
{
LY_ERR ret = LY_SUCCESS;
char *word;
size_t word_len;
enum ly_stmt kw;
ly_bool input = &((struct lysp_node_action *)parent)->input == inout_p ? 1 : 0;
if (inout_p->nodetype) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, ly_stmt2str(inout_kw));
return LY_EVALID;
}
/* initiate structure */
LY_CHECK_RET(lydict_insert(PARSER_CTX(ctx), input ? "input" : "output", 0, &inout_p->name));
inout_p->nodetype = input ? LYS_INPUT : LYS_OUTPUT;
inout_p->parent = parent;
/* parse substatements */
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
switch (kw) {
case LY_STMT_ANYDATA:
PARSER_CHECK_STMTVER2_RET(ctx, "anydata", ly_stmt2str(inout_kw));
/* fall through */
case LY_STMT_ANYXML:
LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)inout_p, &inout_p->child));
break;
case LY_STMT_CHOICE:
LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)inout_p, &inout_p->child));
break;
case LY_STMT_CONTAINER:
LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)inout_p, &inout_p->child));
break;
case LY_STMT_LEAF:
LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)inout_p, &inout_p->child));
break;
case LY_STMT_LEAF_LIST:
LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)inout_p, &inout_p->child));
break;
case LY_STMT_LIST:
LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)inout_p, &inout_p->child));
break;
case LY_STMT_USES:
LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)inout_p, &inout_p->child));
break;
case LY_STMT_TYPEDEF:
LY_CHECK_RET(parse_typedef(ctx, (struct lysp_node *)inout_p, &inout_p->typedefs));
break;
case LY_STMT_MUST:
PARSER_CHECK_STMTVER2_RET(ctx, "must", ly_stmt2str(inout_kw));
LY_CHECK_RET(parse_restrs(ctx, kw, &inout_p->musts));
break;
case LY_STMT_GROUPING:
LY_CHECK_RET(parse_grouping(ctx, (struct lysp_node *)inout_p, &inout_p->groupings));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, inout_kw, 0, &inout_p->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), ly_stmt2str(inout_kw));
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
if (!inout_p->child) {
LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "data-def-stmt", ly_stmt2str(inout_kw));
return LY_EVALID;
}
return ret;
}
/**
* @brief Parse the action statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] actions Actions to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_action(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node_action **actions)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_action *act;
LY_LIST_NEW_RET(PARSER_CTX(ctx), actions, act, next, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, act->name, word, word_len);
act->nodetype = parent ? LYS_ACTION : LYS_RPC;
act->parent = parent;
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &act->dsc, Y_STR_ARG, &act->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &act->iffeatures, Y_STR_ARG, &act->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &act->ref, Y_STR_ARG, &act->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &act->flags, &act->exts));
break;
case LY_STMT_INPUT:
LY_CHECK_RET(parse_inout(ctx, kw, (struct lysp_node *)act, &act->input));
break;
case LY_STMT_OUTPUT:
LY_CHECK_RET(parse_inout(ctx, kw, (struct lysp_node *)act, &act->output));
break;
case LY_STMT_TYPEDEF:
LY_CHECK_RET(parse_typedef(ctx, (struct lysp_node *)act, &act->typedefs));
break;
case LY_STMT_GROUPING:
LY_CHECK_RET(parse_grouping(ctx, (struct lysp_node *)act, &act->groupings));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, parent ? LY_STMT_ACTION : LY_STMT_RPC, 0, &act->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), parent ? "action" : "rpc");
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
/* always initialize inout, they are technically present (needed for later deviations/refines) */
if (!act->input.nodetype) {
act->input.nodetype = LYS_INPUT;
act->input.parent = (struct lysp_node *)act;
LY_CHECK_RET(lydict_insert(PARSER_CTX(ctx), "input", 0, &act->input.name));
}
if (!act->output.nodetype) {
act->output.nodetype = LYS_OUTPUT;
act->output.parent = (struct lysp_node *)act;
LY_CHECK_RET(lydict_insert(PARSER_CTX(ctx), "output", 0, &act->output.name));
}
return ret;
}
/**
* @brief Parse the notification statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] notifs Notifications to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_notif(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node_notif **notifs)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_notif *notif;
LY_LIST_NEW_RET(PARSER_CTX(ctx), notifs, notif, next, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, notif->name, word, word_len);
notif->nodetype = LYS_NOTIF;
notif->parent = parent;
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &notif->dsc, Y_STR_ARG, &notif->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &notif->iffeatures, Y_STR_ARG, &notif->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &notif->ref, Y_STR_ARG, &notif->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &notif->flags, &notif->exts));
break;
case LY_STMT_ANYDATA:
PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "notification");
/* fall through */
case LY_STMT_ANYXML:
LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)notif, &notif->child));
break;
case LY_STMT_CHOICE:
LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)notif, &notif->child));
break;
case LY_STMT_CONTAINER:
LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)notif, &notif->child));
break;
case LY_STMT_LEAF:
LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)notif, &notif->child));
break;
case LY_STMT_LEAF_LIST:
LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)notif, &notif->child));
break;
case LY_STMT_LIST:
LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)notif, &notif->child));
break;
case LY_STMT_USES:
LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)notif, &notif->child));
break;
case LY_STMT_MUST:
PARSER_CHECK_STMTVER2_RET(ctx, "must", "notification");
LY_CHECK_RET(parse_restrs(ctx, kw, &notif->musts));
break;
case LY_STMT_TYPEDEF:
LY_CHECK_RET(parse_typedef(ctx, (struct lysp_node *)notif, &notif->typedefs));
break;
case LY_STMT_GROUPING:
LY_CHECK_RET(parse_grouping(ctx, (struct lysp_node *)notif, &notif->groupings));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_NOTIFICATION, 0, &notif->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "notification");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the grouping statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] groupings Groupings to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_grouping(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node_grp **groupings)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_grp *grp;
LY_LIST_NEW_RET(PARSER_CTX(ctx), groupings, grp, next, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, grp->name, word, word_len);
grp->nodetype = LYS_GROUPING;
grp->parent = parent;
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &grp->dsc, Y_STR_ARG, &grp->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &grp->ref, Y_STR_ARG, &grp->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &grp->flags, &grp->exts));
break;
case LY_STMT_ANYDATA:
PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "grouping");
/* fall through */
case LY_STMT_ANYXML:
LY_CHECK_RET(parse_any(ctx, kw, &grp->node, &grp->child));
break;
case LY_STMT_CHOICE:
LY_CHECK_RET(parse_choice(ctx, &grp->node, &grp->child));
break;
case LY_STMT_CONTAINER:
LY_CHECK_RET(parse_container(ctx, &grp->node, &grp->child));
break;
case LY_STMT_LEAF:
LY_CHECK_RET(parse_leaf(ctx, &grp->node, &grp->child));
break;
case LY_STMT_LEAF_LIST:
LY_CHECK_RET(parse_leaflist(ctx, &grp->node, &grp->child));
break;
case LY_STMT_LIST:
LY_CHECK_RET(parse_list(ctx, &grp->node, &grp->child));
break;
case LY_STMT_USES:
LY_CHECK_RET(parse_uses(ctx, &grp->node, &grp->child));
break;
case LY_STMT_TYPEDEF:
LY_CHECK_RET(parse_typedef(ctx, &grp->node, &grp->typedefs));
break;
case LY_STMT_ACTION:
PARSER_CHECK_STMTVER2_RET(ctx, "action", "grouping");
LY_CHECK_RET(parse_action(ctx, &grp->node, &grp->actions));
break;
case LY_STMT_GROUPING:
LY_CHECK_RET(parse_grouping(ctx, &grp->node, &grp->groupings));
break;
case LY_STMT_NOTIFICATION:
PARSER_CHECK_STMTVER2_RET(ctx, "notification", "grouping");
LY_CHECK_RET(parse_notif(ctx, &grp->node, &grp->notifs));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_GROUPING, 0, &grp->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "grouping");
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
/* store data for collision check */
if (parent) {
assert(ctx->main_ctx);
LY_CHECK_RET(ly_set_add(&ctx->main_ctx->grps_nodes, parent, 0, NULL));
}
return ret;
}
/**
* @brief Parse the augment statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] augments Augments to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_augment(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node_augment **augments)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_augment *aug;
LY_LIST_NEW_RET(PARSER_CTX(ctx), augments, aug, next, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
CHECK_NONEMPTY(ctx, word_len, "augment");
INSERT_WORD_RET(ctx, buf, aug->nodeid, word, word_len);
aug->nodetype = LYS_AUGMENT;
aug->parent = parent;
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &aug->dsc, Y_STR_ARG, &aug->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &aug->iffeatures, Y_STR_ARG, &aug->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &aug->ref, Y_STR_ARG, &aug->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &aug->flags, &aug->exts));
break;
case LY_STMT_WHEN:
LY_CHECK_RET(parse_when(ctx, &aug->when));
break;
case LY_STMT_ANYDATA:
PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "augment");
/* fall through */
case LY_STMT_ANYXML:
LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)aug, &aug->child));
break;
case LY_STMT_CASE:
LY_CHECK_RET(parse_case(ctx, (struct lysp_node *)aug, &aug->child));
break;
case LY_STMT_CHOICE:
LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)aug, &aug->child));
break;
case LY_STMT_CONTAINER:
LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)aug, &aug->child));
break;
case LY_STMT_LEAF:
LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)aug, &aug->child));
break;
case LY_STMT_LEAF_LIST:
LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)aug, &aug->child));
break;
case LY_STMT_LIST:
LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)aug, &aug->child));
break;
case LY_STMT_USES:
LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)aug, &aug->child));
break;
case LY_STMT_ACTION:
PARSER_CHECK_STMTVER2_RET(ctx, "action", "augment");
LY_CHECK_RET(parse_action(ctx, (struct lysp_node *)aug, &aug->actions));
break;
case LY_STMT_NOTIFICATION:
PARSER_CHECK_STMTVER2_RET(ctx, "notification", "augment");
LY_CHECK_RET(parse_notif(ctx, (struct lysp_node *)aug, &aug->notifs));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_AUGMENT, 0, &aug->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "augment");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the uses statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] siblings Siblings to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_uses(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_uses *uses;
/* create uses structure */
LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, uses, next, LY_EMEM);
uses->nodetype = LYS_USES;
uses->parent = parent;
/* get name */
LY_CHECK_RET(get_argument(ctx, Y_PREF_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, uses->name, word, word_len);
/* parse substatements */
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &uses->dsc, Y_STR_ARG, &uses->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &uses->iffeatures, Y_STR_ARG, &uses->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &uses->ref, Y_STR_ARG, &uses->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &uses->flags, &uses->exts));
break;
case LY_STMT_WHEN:
LY_CHECK_RET(parse_when(ctx, &uses->when));
break;
case LY_STMT_REFINE:
LY_CHECK_RET(parse_refine(ctx, &uses->refines));
break;
case LY_STMT_AUGMENT:
LY_CHECK_RET(parse_augment(ctx, (struct lysp_node *)uses, &uses->augments));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_USES, 0, &uses->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "uses");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the case statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] siblings Siblings to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_case(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_case *cas;
/* create new case structure */
LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, cas, next, LY_EMEM);
cas->nodetype = LYS_CASE;
cas->parent = parent;
/* get name */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, cas->name, word, word_len);
/* parse substatements */
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &cas->dsc, Y_STR_ARG, &cas->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &cas->iffeatures, Y_STR_ARG, &cas->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &cas->ref, Y_STR_ARG, &cas->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &cas->flags, &cas->exts));
break;
case LY_STMT_WHEN:
LY_CHECK_RET(parse_when(ctx, &cas->when));
break;
case LY_STMT_ANYDATA:
PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "case");
/* fall through */
case LY_STMT_ANYXML:
LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)cas, &cas->child));
break;
case LY_STMT_CHOICE:
LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)cas, &cas->child));
break;
case LY_STMT_CONTAINER:
LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)cas, &cas->child));
break;
case LY_STMT_LEAF:
LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)cas, &cas->child));
break;
case LY_STMT_LEAF_LIST:
LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)cas, &cas->child));
break;
case LY_STMT_LIST:
LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)cas, &cas->child));
break;
case LY_STMT_USES:
LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)cas, &cas->child));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_CASE, 0, &cas->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "case");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the choice statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] siblings Siblings to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_choice(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_choice *choice;
/* create new choice structure */
LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, choice, next, LY_EMEM);
choice->nodetype = LYS_CHOICE;
choice->parent = parent;
/* get name */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, choice->name, word, word_len);
/* parse substatements */
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_CONFIG:
LY_CHECK_RET(parse_config(ctx, &choice->flags, &choice->exts));
break;
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &choice->dsc, Y_STR_ARG, &choice->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &choice->iffeatures, Y_STR_ARG, &choice->exts));
break;
case LY_STMT_MANDATORY:
LY_CHECK_RET(parse_mandatory(ctx, &choice->flags, &choice->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &choice->ref, Y_STR_ARG, &choice->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &choice->flags, &choice->exts));
break;
case LY_STMT_WHEN:
LY_CHECK_RET(parse_when(ctx, &choice->when));
break;
case LY_STMT_DEFAULT:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DEFAULT, 0, &choice->dflt.str, Y_PREF_IDENTIF_ARG,
&choice->exts));
choice->dflt.mod = ctx->parsed_mod;
break;
case LY_STMT_ANYDATA:
PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "choice");
/* fall through */
case LY_STMT_ANYXML:
LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)choice, &choice->child));
break;
case LY_STMT_CASE:
LY_CHECK_RET(parse_case(ctx, (struct lysp_node *)choice, &choice->child));
break;
case LY_STMT_CHOICE:
PARSER_CHECK_STMTVER2_RET(ctx, "choice", "choice");
LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)choice, &choice->child));
break;
case LY_STMT_CONTAINER:
LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)choice, &choice->child));
break;
case LY_STMT_LEAF:
LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)choice, &choice->child));
break;
case LY_STMT_LEAF_LIST:
LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)choice, &choice->child));
break;
case LY_STMT_LIST:
LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)choice, &choice->child));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_CHOICE, 0, &choice->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "choice");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the container statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] siblings Siblings to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_container(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings)
{
LY_ERR ret = 0;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_container *cont;
/* create new container structure */
LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, cont, next, LY_EMEM);
cont->nodetype = LYS_CONTAINER;
cont->parent = parent;
/* get name */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, cont->name, word, word_len);
/* parse substatements */
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_CONFIG:
LY_CHECK_RET(parse_config(ctx, &cont->flags, &cont->exts));
break;
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &cont->dsc, Y_STR_ARG, &cont->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &cont->iffeatures, Y_STR_ARG, &cont->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &cont->ref, Y_STR_ARG, &cont->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &cont->flags, &cont->exts));
break;
case LY_STMT_WHEN:
LY_CHECK_RET(parse_when(ctx, &cont->when));
break;
case LY_STMT_PRESENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_PRESENCE, 0, &cont->presence, Y_STR_ARG, &cont->exts));
break;
case LY_STMT_ANYDATA:
PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "container");
/* fall through */
case LY_STMT_ANYXML:
LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)cont, &cont->child));
break;
case LY_STMT_CHOICE:
LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)cont, &cont->child));
break;
case LY_STMT_CONTAINER:
LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)cont, &cont->child));
break;
case LY_STMT_LEAF:
LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)cont, &cont->child));
break;
case LY_STMT_LEAF_LIST:
LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)cont, &cont->child));
break;
case LY_STMT_LIST:
LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)cont, &cont->child));
break;
case LY_STMT_USES:
LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)cont, &cont->child));
break;
case LY_STMT_TYPEDEF:
LY_CHECK_RET(parse_typedef(ctx, (struct lysp_node *)cont, &cont->typedefs));
break;
case LY_STMT_MUST:
LY_CHECK_RET(parse_restrs(ctx, kw, &cont->musts));
break;
case LY_STMT_ACTION:
PARSER_CHECK_STMTVER2_RET(ctx, "action", "container");
LY_CHECK_RET(parse_action(ctx, (struct lysp_node *)cont, &cont->actions));
break;
case LY_STMT_GROUPING:
LY_CHECK_RET(parse_grouping(ctx, (struct lysp_node *)cont, &cont->groupings));
break;
case LY_STMT_NOTIFICATION:
PARSER_CHECK_STMTVER2_RET(ctx, "notification", "container");
LY_CHECK_RET(parse_notif(ctx, (struct lysp_node *)cont, &cont->notifs));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_CONTAINER, 0, &cont->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "container");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the list statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] siblings Siblings to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_list(struct lys_yang_parser_ctx *ctx, struct lysp_node *parent, struct lysp_node **siblings)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_node_list *list;
/* create new list structure */
LY_LIST_NEW_RET(PARSER_CTX(ctx), siblings, list, next, LY_EMEM);
list->nodetype = LYS_LIST;
list->parent = parent;
/* get name */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, list->name, word, word_len);
/* parse substatements */
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_CONFIG:
LY_CHECK_RET(parse_config(ctx, &list->flags, &list->exts));
break;
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &list->dsc, Y_STR_ARG, &list->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &list->iffeatures, Y_STR_ARG, &list->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &list->ref, Y_STR_ARG, &list->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &list->flags, &list->exts));
break;
case LY_STMT_WHEN:
LY_CHECK_RET(parse_when(ctx, &list->when));
break;
case LY_STMT_KEY:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_KEY, 0, &list->key, Y_STR_ARG, &list->exts));
break;
case LY_STMT_MAX_ELEMENTS:
LY_CHECK_RET(parse_maxelements(ctx, &list->max, &list->flags, &list->exts));
break;
case LY_STMT_MIN_ELEMENTS:
LY_CHECK_RET(parse_minelements(ctx, &list->min, &list->flags, &list->exts));
break;
case LY_STMT_ORDERED_BY:
LY_CHECK_RET(parse_orderedby(ctx, &list->flags, &list->exts));
break;
case LY_STMT_UNIQUE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_UNIQUE, &list->uniques, Y_STR_ARG, &list->exts));
break;
case LY_STMT_ANYDATA:
PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "list");
/* fall through */
case LY_STMT_ANYXML:
LY_CHECK_RET(parse_any(ctx, kw, (struct lysp_node *)list, &list->child));
break;
case LY_STMT_CHOICE:
LY_CHECK_RET(parse_choice(ctx, (struct lysp_node *)list, &list->child));
break;
case LY_STMT_CONTAINER:
LY_CHECK_RET(parse_container(ctx, (struct lysp_node *)list, &list->child));
break;
case LY_STMT_LEAF:
LY_CHECK_RET(parse_leaf(ctx, (struct lysp_node *)list, &list->child));
break;
case LY_STMT_LEAF_LIST:
LY_CHECK_RET(parse_leaflist(ctx, (struct lysp_node *)list, &list->child));
break;
case LY_STMT_LIST:
LY_CHECK_RET(parse_list(ctx, (struct lysp_node *)list, &list->child));
break;
case LY_STMT_USES:
LY_CHECK_RET(parse_uses(ctx, (struct lysp_node *)list, &list->child));
break;
case LY_STMT_TYPEDEF:
LY_CHECK_RET(parse_typedef(ctx, (struct lysp_node *)list, &list->typedefs));
break;
case LY_STMT_MUST:
LY_CHECK_RET(parse_restrs(ctx, kw, &list->musts));
break;
case LY_STMT_ACTION:
PARSER_CHECK_STMTVER2_RET(ctx, "action", "list");
LY_CHECK_RET(parse_action(ctx, (struct lysp_node *)list, &list->actions));
break;
case LY_STMT_GROUPING:
LY_CHECK_RET(parse_grouping(ctx, (struct lysp_node *)list, &list->groupings));
break;
case LY_STMT_NOTIFICATION:
PARSER_CHECK_STMTVER2_RET(ctx, "notification", "list");
LY_CHECK_RET(parse_notif(ctx, (struct lysp_node *)list, &list->notifs));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_LIST, 0, &list->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "list");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the yin-element statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] flags Flags to write to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_yinelement(struct lys_yang_parser_ctx *ctx, uint16_t *flags, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (*flags & LYS_YINELEM_MASK) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "yin-element");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if ((word_len == ly_strlen_const("true")) && !strncmp(word, "true", word_len)) {
*flags |= LYS_YINELEM_TRUE;
} else if ((word_len == ly_strlen_const("false")) && !strncmp(word, "false", word_len)) {
*flags |= LYS_YINELEM_FALSE;
} else {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "yin-element");
free(buf);
return LY_EVALID;
}
free(buf);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_YIN_ELEMENT, 0, exts));
LY_CHECK_RET(ret);
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "yin-element");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the argument statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] argument Value to write to.
* @param[in,out] flags Flags to write to.
* @param[in,out] exts Extension instances to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_argument(struct lys_yang_parser_ctx *ctx, const char **argument, uint16_t *flags, struct lysp_ext_instance **exts)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
if (*argument) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, "argument");
return LY_EVALID;
}
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, *argument, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_YIN_ELEMENT:
LY_CHECK_RET(parse_yinelement(ctx, flags, exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_ARGUMENT, 0, exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "argument");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the extension statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] extensions Extensions to add to.
*
* @return LY_ERR values.
*/
static LY_ERR
parse_extension(struct lys_yang_parser_ctx *ctx, struct lysp_ext **extensions)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_ext *ex;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *extensions, ex, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, ex->name, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &ex->dsc, Y_STR_ARG, &ex->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &ex->ref, Y_STR_ARG, &ex->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &ex->flags, &ex->exts));
break;
case LY_STMT_ARGUMENT:
LY_CHECK_RET(parse_argument(ctx, &ex->argname, &ex->flags, &ex->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_EXTENSION, 0, &ex->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "extension");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the deviate statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] deviates Deviates to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_deviate(struct lys_yang_parser_ctx *ctx, struct lysp_deviate **deviates)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len, dev_mod;
enum ly_stmt kw;
struct lysp_deviate *d;
struct lysp_deviate_add *d_add = NULL;
struct lysp_deviate_rpl *d_rpl = NULL;
struct lysp_deviate_del *d_del = NULL;
const char **d_units = NULL;
struct lysp_qname **d_uniques = NULL, **d_dflts = NULL;
struct lysp_restr **d_musts = NULL;
uint16_t *d_flags = 0;
uint32_t *d_min = 0, *d_max = 0;
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
if ((word_len == ly_strlen_const("not-supported")) && !strncmp(word, "not-supported", word_len)) {
dev_mod = LYS_DEV_NOT_SUPPORTED;
} else if ((word_len == ly_strlen_const("add")) && !strncmp(word, "add", word_len)) {
dev_mod = LYS_DEV_ADD;
} else if ((word_len == ly_strlen_const("replace")) && !strncmp(word, "replace", word_len)) {
dev_mod = LYS_DEV_REPLACE;
} else if ((word_len == ly_strlen_const("delete")) && !strncmp(word, "delete", word_len)) {
dev_mod = LYS_DEV_DELETE;
} else {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, word_len, word, "deviate");
free(buf);
return LY_EVALID;
}
free(buf);
/* create structure */
switch (dev_mod) {
case LYS_DEV_NOT_SUPPORTED:
d = calloc(1, sizeof *d);
LY_CHECK_ERR_RET(!d, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
break;
case LYS_DEV_ADD:
d_add = calloc(1, sizeof *d_add);
LY_CHECK_ERR_RET(!d_add, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
d = (struct lysp_deviate *)d_add;
d_units = &d_add->units;
d_uniques = &d_add->uniques;
d_dflts = &d_add->dflts;
d_musts = &d_add->musts;
d_flags = &d_add->flags;
d_min = &d_add->min;
d_max = &d_add->max;
break;
case LYS_DEV_REPLACE:
d_rpl = calloc(1, sizeof *d_rpl);
LY_CHECK_ERR_RET(!d_rpl, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
d = (struct lysp_deviate *)d_rpl;
d_units = &d_rpl->units;
d_flags = &d_rpl->flags;
d_min = &d_rpl->min;
d_max = &d_rpl->max;
break;
case LYS_DEV_DELETE:
d_del = calloc(1, sizeof *d_del);
LY_CHECK_ERR_RET(!d_del, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
d = (struct lysp_deviate *)d_del;
d_units = &d_del->units;
d_uniques = &d_del->uniques;
d_dflts = &d_del->dflts;
d_musts = &d_del->musts;
break;
default:
assert(0);
LOGINT_RET(PARSER_CTX(ctx));
}
d->mod = dev_mod;
/* insert into siblings */
LY_LIST_INSERT(deviates, d, next);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_CONFIG:
switch (dev_mod) {
case LYS_DEV_NOT_SUPPORTED:
case LYS_DEV_DELETE:
LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), ly_stmt2str(kw));
return LY_EVALID;
default:
LY_CHECK_RET(parse_config(ctx, d_flags, &d->exts));
break;
}
break;
case LY_STMT_DEFAULT:
switch (dev_mod) {
case LYS_DEV_NOT_SUPPORTED:
LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), ly_stmt2str(kw));
return LY_EVALID;
case LYS_DEV_REPLACE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DEFAULT, 0, &d_rpl->dflt.str, Y_STR_ARG, &d->exts));
d_rpl->dflt.mod = ctx->parsed_mod;
break;
default:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_DEFAULT, d_dflts, Y_STR_ARG, &d->exts));
break;
}
break;
case LY_STMT_MANDATORY:
switch (dev_mod) {
case LYS_DEV_NOT_SUPPORTED:
case LYS_DEV_DELETE:
LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), ly_stmt2str(kw));
return LY_EVALID;
default:
LY_CHECK_RET(parse_mandatory(ctx, d_flags, &d->exts));
break;
}
break;
case LY_STMT_MAX_ELEMENTS:
switch (dev_mod) {
case LYS_DEV_NOT_SUPPORTED:
case LYS_DEV_DELETE:
LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), ly_stmt2str(kw));
return LY_EVALID;
default:
LY_CHECK_RET(parse_maxelements(ctx, d_max, d_flags, &d->exts));
break;
}
break;
case LY_STMT_MIN_ELEMENTS:
switch (dev_mod) {
case LYS_DEV_NOT_SUPPORTED:
case LYS_DEV_DELETE:
LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), ly_stmt2str(kw));
return LY_EVALID;
default:
LY_CHECK_RET(parse_minelements(ctx, d_min, d_flags, &d->exts));
break;
}
break;
case LY_STMT_MUST:
switch (dev_mod) {
case LYS_DEV_NOT_SUPPORTED:
case LYS_DEV_REPLACE:
LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), ly_stmt2str(kw));
return LY_EVALID;
default:
LY_CHECK_RET(parse_restrs(ctx, kw, d_musts));
break;
}
break;
case LY_STMT_TYPE:
switch (dev_mod) {
case LYS_DEV_NOT_SUPPORTED:
case LYS_DEV_ADD:
case LYS_DEV_DELETE:
LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), ly_stmt2str(kw));
return LY_EVALID;
default:
if (d_rpl->type) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPSTMT, ly_stmt2str(kw));
return LY_EVALID;
}
d_rpl->type = calloc(1, sizeof *d_rpl->type);
LY_CHECK_ERR_RET(!d_rpl->type, LOGMEM(PARSER_CTX(ctx)), LY_EMEM);
LY_CHECK_RET(parse_type(ctx, d_rpl->type));
break;
}
break;
case LY_STMT_UNIQUE:
switch (dev_mod) {
case LYS_DEV_NOT_SUPPORTED:
case LYS_DEV_REPLACE:
LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), ly_stmt2str(kw));
return LY_EVALID;
default:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_UNIQUE, d_uniques, Y_STR_ARG, &d->exts));
break;
}
break;
case LY_STMT_UNITS:
switch (dev_mod) {
case LYS_DEV_NOT_SUPPORTED:
LOGVAL_PARSER(ctx, LY_VCODE_INDEV, ly_devmod2str(dev_mod), ly_stmt2str(kw));
return LY_EVALID;
default:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_UNITS, 0, d_units, Y_STR_ARG, &d->exts));
break;
}
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_DEVIATE, 0, &d->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "deviate");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the deviation statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] deviations Deviations to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_deviation(struct lys_yang_parser_ctx *ctx, struct lysp_deviation **deviations)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_deviation *dev;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *deviations, dev, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_STR_ARG, NULL, &word, &buf, &word_len));
CHECK_NONEMPTY(ctx, word_len, "deviation");
INSERT_WORD_RET(ctx, buf, dev->nodeid, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &dev->dsc, Y_STR_ARG, &dev->exts));
break;
case LY_STMT_DEVIATE:
LY_CHECK_RET(parse_deviate(ctx, &dev->deviates));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &dev->ref, Y_STR_ARG, &dev->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_DEVIATION, 0, &dev->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "deviation");
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
/* mandatory substatements */
if (!dev->deviates) {
LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "deviate", "deviation");
return LY_EVALID;
}
return ret;
}
/**
* @brief Parse the feature statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] features Features to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_feature(struct lys_yang_parser_ctx *ctx, struct lysp_feature **features)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_feature *feat;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *features, feat, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, feat->name, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &feat->dsc, Y_STR_ARG, &feat->exts));
break;
case LY_STMT_IF_FEATURE:
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &feat->iffeatures, Y_STR_ARG, &feat->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &feat->ref, Y_STR_ARG, &feat->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &feat->flags, &feat->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_FEATURE, 0, &feat->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "feature");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse the identity statement.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] identities Identities to add to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_identity(struct lys_yang_parser_ctx *ctx, struct lysp_ident **identities)
{
LY_ERR ret = LY_SUCCESS;
char *buf, *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_ident *ident;
LY_ARRAY_NEW_RET(PARSER_CTX(ctx), *identities, ident, LY_EMEM);
/* get value */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, ident->name, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, return LY_SUCCESS, return ret) {
switch (kw) {
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &ident->dsc, Y_STR_ARG, &ident->exts));
break;
case LY_STMT_IF_FEATURE:
PARSER_CHECK_STMTVER2_RET(ctx, "if-feature", "identity");
LY_CHECK_RET(parse_qnames(ctx, LY_STMT_IF_FEATURE, &ident->iffeatures, Y_STR_ARG, &ident->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &ident->ref, Y_STR_ARG, &ident->exts));
break;
case LY_STMT_STATUS:
LY_CHECK_RET(parse_status(ctx, &ident->flags, &ident->exts));
break;
case LY_STMT_BASE:
if (ident->bases && (ctx->parsed_mod->version < LYS_VERSION_1_1)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Identity can be derived from multiple base identities only in YANG 1.1 modules");
return LY_EVALID;
}
LY_CHECK_RET(parse_text_fields(ctx, LY_STMT_BASE, &ident->bases, Y_PREF_IDENTIF_ARG, &ident->exts));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_IDENTITY, 0, &ident->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "identity");
return LY_EVALID;
}
}
return ret;
}
/**
* @brief Parse module substatements.
*
* @param[in] ctx yang parser context for logging.
* @param[in,out] mod Module to write to.
*
* @return LY_ERR values.
*/
LY_ERR
parse_module(struct lys_yang_parser_ctx *ctx, struct lysp_module *mod)
{
LY_ERR ret = 0;
char *buf, *word;
size_t word_len;
enum ly_stmt kw, prev_kw = 0;
enum yang_module_stmt mod_stmt = Y_MOD_MODULE_HEADER;
const struct lysp_submodule *dup;
mod->is_submod = 0;
/* module name */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, mod->mod->name, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
#define CHECK_ORDER(SECTION) \
if (mod_stmt > SECTION) {LOGVAL_PARSER(ctx, LY_VCODE_INORD, ly_stmt2str(kw), ly_stmt2str(prev_kw)); return LY_EVALID;}mod_stmt = SECTION
switch (kw) {
/* module header */
case LY_STMT_NAMESPACE:
case LY_STMT_PREFIX:
CHECK_ORDER(Y_MOD_MODULE_HEADER);
break;
case LY_STMT_YANG_VERSION:
CHECK_ORDER(Y_MOD_MODULE_HEADER);
break;
/* linkage */
case LY_STMT_INCLUDE:
case LY_STMT_IMPORT:
CHECK_ORDER(Y_MOD_LINKAGE);
break;
/* meta */
case LY_STMT_ORGANIZATION:
case LY_STMT_CONTACT:
case LY_STMT_DESCRIPTION:
case LY_STMT_REFERENCE:
CHECK_ORDER(Y_MOD_META);
break;
/* revision */
case LY_STMT_REVISION:
CHECK_ORDER(Y_MOD_REVISION);
break;
/* body */
case LY_STMT_ANYDATA:
case LY_STMT_ANYXML:
case LY_STMT_AUGMENT:
case LY_STMT_CHOICE:
case LY_STMT_CONTAINER:
case LY_STMT_DEVIATION:
case LY_STMT_EXTENSION:
case LY_STMT_FEATURE:
case LY_STMT_GROUPING:
case LY_STMT_IDENTITY:
case LY_STMT_LEAF:
case LY_STMT_LEAF_LIST:
case LY_STMT_LIST:
case LY_STMT_NOTIFICATION:
case LY_STMT_RPC:
case LY_STMT_TYPEDEF:
case LY_STMT_USES:
case LY_STMT_EXTENSION_INSTANCE:
mod_stmt = Y_MOD_BODY;
break;
default:
/* error handled in the next switch */
break;
}
#undef CHECK_ORDER
prev_kw = kw;
switch (kw) {
/* module header */
case LY_STMT_YANG_VERSION:
LY_CHECK_RET(parse_yangversion(ctx, &mod->version, &mod->exts));
break;
case LY_STMT_NAMESPACE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_NAMESPACE, 0, &mod->mod->ns, Y_STR_ARG, &mod->exts));
break;
case LY_STMT_PREFIX:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_PREFIX, 0, &mod->mod->prefix, Y_IDENTIF_ARG, &mod->exts));
break;
/* linkage */
case LY_STMT_INCLUDE:
LY_CHECK_RET(parse_include(ctx, mod->mod->name, &mod->includes));
break;
case LY_STMT_IMPORT:
LY_CHECK_RET(parse_import(ctx, mod->mod->prefix, &mod->imports));
break;
/* meta */
case LY_STMT_ORGANIZATION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_ORGANIZATION, 0, &mod->mod->org, Y_STR_ARG, &mod->exts));
break;
case LY_STMT_CONTACT:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_CONTACT, 0, &mod->mod->contact, Y_STR_ARG, &mod->exts));
break;
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &mod->mod->dsc, Y_STR_ARG, &mod->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &mod->mod->ref, Y_STR_ARG, &mod->exts));
break;
/* revision */
case LY_STMT_REVISION:
LY_CHECK_RET(parse_revision(ctx, &mod->revs));
break;
/* body */
case LY_STMT_ANYDATA:
PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "module");
/* fall through */
case LY_STMT_ANYXML:
LY_CHECK_RET(parse_any(ctx, kw, NULL, &mod->data));
break;
case LY_STMT_CHOICE:
LY_CHECK_RET(parse_choice(ctx, NULL, &mod->data));
break;
case LY_STMT_CONTAINER:
LY_CHECK_RET(parse_container(ctx, NULL, &mod->data));
break;
case LY_STMT_LEAF:
LY_CHECK_RET(parse_leaf(ctx, NULL, &mod->data));
break;
case LY_STMT_LEAF_LIST:
LY_CHECK_RET(parse_leaflist(ctx, NULL, &mod->data));
break;
case LY_STMT_LIST:
LY_CHECK_RET(parse_list(ctx, NULL, &mod->data));
break;
case LY_STMT_USES:
LY_CHECK_RET(parse_uses(ctx, NULL, &mod->data));
break;
case LY_STMT_AUGMENT:
LY_CHECK_RET(parse_augment(ctx, NULL, &mod->augments));
break;
case LY_STMT_DEVIATION:
LY_CHECK_RET(parse_deviation(ctx, &mod->deviations));
break;
case LY_STMT_EXTENSION:
LY_CHECK_RET(parse_extension(ctx, &mod->extensions));
break;
case LY_STMT_FEATURE:
LY_CHECK_RET(parse_feature(ctx, &mod->features));
break;
case LY_STMT_GROUPING:
LY_CHECK_RET(parse_grouping(ctx, NULL, &mod->groupings));
break;
case LY_STMT_IDENTITY:
LY_CHECK_RET(parse_identity(ctx, &mod->identities));
break;
case LY_STMT_NOTIFICATION:
LY_CHECK_RET(parse_notif(ctx, NULL, &mod->notifs));
break;
case LY_STMT_RPC:
LY_CHECK_RET(parse_action(ctx, NULL, &mod->rpcs));
break;
case LY_STMT_TYPEDEF:
LY_CHECK_RET(parse_typedef(ctx, NULL, &mod->typedefs));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_MODULE, 0, &mod->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "module");
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
/* mandatory substatements */
if (!mod->mod->ns) {
LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "namespace", "module");
return LY_EVALID;
} else if (!mod->mod->prefix) {
LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "prefix", "module");
return LY_EVALID;
}
/* submodules share the namespace with the module names, so there must not be
* a submodule of the same name in the context, no need for revision matching */
dup = ly_ctx_get_submodule_latest(PARSER_CTX(ctx), mod->mod->name);
if (dup) {
LOGVAL_PARSER(ctx, LY_VCODE_NAME2_COL, "module", "submodule", mod->mod->name);
return LY_EVALID;
}
return ret;
}
/**
* @brief Parse submodule substatements.
*
* @param[in] ctx yang parser context for logging.
* @param[out] submod Parsed submodule structure.
*
* @return LY_ERR values.
*/
LY_ERR
parse_submodule(struct lys_yang_parser_ctx *ctx, struct lysp_submodule *submod)
{
LY_ERR ret = 0;
char *buf, *word;
size_t word_len;
enum ly_stmt kw, prev_kw = 0;
enum yang_module_stmt mod_stmt = Y_MOD_MODULE_HEADER;
const struct lysp_submodule *dup;
submod->is_submod = 1;
/* submodule name */
LY_CHECK_RET(get_argument(ctx, Y_IDENTIF_ARG, NULL, &word, &buf, &word_len));
INSERT_WORD_RET(ctx, buf, submod->name, word, word_len);
YANG_READ_SUBSTMT_FOR(ctx, kw, word, word_len, ret, goto checks, return ret) {
#define CHECK_ORDER(SECTION) \
if (mod_stmt > SECTION) {LOGVAL_PARSER(ctx, LY_VCODE_INORD, ly_stmt2str(kw), ly_stmt2str(prev_kw)); return LY_EVALID;}mod_stmt = SECTION
switch (kw) {
/* module header */
case LY_STMT_BELONGS_TO:
CHECK_ORDER(Y_MOD_MODULE_HEADER);
break;
case LY_STMT_YANG_VERSION:
CHECK_ORDER(Y_MOD_MODULE_HEADER);
break;
/* linkage */
case LY_STMT_INCLUDE:
case LY_STMT_IMPORT:
CHECK_ORDER(Y_MOD_LINKAGE);
break;
/* meta */
case LY_STMT_ORGANIZATION:
case LY_STMT_CONTACT:
case LY_STMT_DESCRIPTION:
case LY_STMT_REFERENCE:
CHECK_ORDER(Y_MOD_META);
break;
/* revision */
case LY_STMT_REVISION:
CHECK_ORDER(Y_MOD_REVISION);
break;
/* body */
case LY_STMT_ANYDATA:
case LY_STMT_ANYXML:
case LY_STMT_AUGMENT:
case LY_STMT_CHOICE:
case LY_STMT_CONTAINER:
case LY_STMT_DEVIATION:
case LY_STMT_EXTENSION:
case LY_STMT_FEATURE:
case LY_STMT_GROUPING:
case LY_STMT_IDENTITY:
case LY_STMT_LEAF:
case LY_STMT_LEAF_LIST:
case LY_STMT_LIST:
case LY_STMT_NOTIFICATION:
case LY_STMT_RPC:
case LY_STMT_TYPEDEF:
case LY_STMT_USES:
case LY_STMT_EXTENSION_INSTANCE:
mod_stmt = Y_MOD_BODY;
break;
default:
/* error handled in the next switch */
break;
}
#undef CHECK_ORDER
prev_kw = kw;
switch (kw) {
/* module header */
case LY_STMT_YANG_VERSION:
LY_CHECK_RET(parse_yangversion(ctx, &submod->version, &submod->exts));
break;
case LY_STMT_BELONGS_TO:
LY_CHECK_RET(parse_belongsto(ctx, &submod->prefix, &submod->exts));
break;
/* linkage */
case LY_STMT_INCLUDE:
if (submod->version == LYS_VERSION_1_1) {
LOGWRN(PARSER_CTX(ctx), "YANG version 1.1 expects all includes in main module, includes in submodules (%s) are not necessary.",
submod->name);
}
LY_CHECK_RET(parse_include(ctx, submod->name, &submod->includes));
break;
case LY_STMT_IMPORT:
LY_CHECK_RET(parse_import(ctx, submod->prefix, &submod->imports));
break;
/* meta */
case LY_STMT_ORGANIZATION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_ORGANIZATION, 0, &submod->org, Y_STR_ARG, &submod->exts));
break;
case LY_STMT_CONTACT:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_CONTACT, 0, &submod->contact, Y_STR_ARG, &submod->exts));
break;
case LY_STMT_DESCRIPTION:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_DESCRIPTION, 0, &submod->dsc, Y_STR_ARG, &submod->exts));
break;
case LY_STMT_REFERENCE:
LY_CHECK_RET(parse_text_field(ctx, LY_STMT_REFERENCE, 0, &submod->ref, Y_STR_ARG, &submod->exts));
break;
/* revision */
case LY_STMT_REVISION:
LY_CHECK_RET(parse_revision(ctx, &submod->revs));
break;
/* body */
case LY_STMT_ANYDATA:
PARSER_CHECK_STMTVER2_RET(ctx, "anydata", "submodule");
/* fall through */
case LY_STMT_ANYXML:
LY_CHECK_RET(parse_any(ctx, kw, NULL, &submod->data));
break;
case LY_STMT_CHOICE:
LY_CHECK_RET(parse_choice(ctx, NULL, &submod->data));
break;
case LY_STMT_CONTAINER:
LY_CHECK_RET(parse_container(ctx, NULL, &submod->data));
break;
case LY_STMT_LEAF:
LY_CHECK_RET(parse_leaf(ctx, NULL, &submod->data));
break;
case LY_STMT_LEAF_LIST:
LY_CHECK_RET(parse_leaflist(ctx, NULL, &submod->data));
break;
case LY_STMT_LIST:
LY_CHECK_RET(parse_list(ctx, NULL, &submod->data));
break;
case LY_STMT_USES:
LY_CHECK_RET(parse_uses(ctx, NULL, &submod->data));
break;
case LY_STMT_AUGMENT:
LY_CHECK_RET(parse_augment(ctx, NULL, &submod->augments));
break;
case LY_STMT_DEVIATION:
LY_CHECK_RET(parse_deviation(ctx, &submod->deviations));
break;
case LY_STMT_EXTENSION:
LY_CHECK_RET(parse_extension(ctx, &submod->extensions));
break;
case LY_STMT_FEATURE:
LY_CHECK_RET(parse_feature(ctx, &submod->features));
break;
case LY_STMT_GROUPING:
LY_CHECK_RET(parse_grouping(ctx, NULL, &submod->groupings));
break;
case LY_STMT_IDENTITY:
LY_CHECK_RET(parse_identity(ctx, &submod->identities));
break;
case LY_STMT_NOTIFICATION:
LY_CHECK_RET(parse_notif(ctx, NULL, &submod->notifs));
break;
case LY_STMT_RPC:
LY_CHECK_RET(parse_action(ctx, NULL, &submod->rpcs));
break;
case LY_STMT_TYPEDEF:
LY_CHECK_RET(parse_typedef(ctx, NULL, &submod->typedefs));
break;
case LY_STMT_EXTENSION_INSTANCE:
LY_CHECK_RET(parse_ext(ctx, word, word_len, LY_STMT_SUBMODULE, 0, &submod->exts));
break;
default:
LOGVAL_PARSER(ctx, LY_VCODE_INCHILDSTMT, ly_stmt2str(kw), "submodule");
return LY_EVALID;
}
}
LY_CHECK_RET(ret);
checks:
/* mandatory substatements */
if (!submod->prefix) {
LOGVAL_PARSER(ctx, LY_VCODE_MISSTMT, "belongs-to", "submodule");
return LY_EVALID;
}
/* submodules share the namespace with the module names, so there must not be
* a submodule of the same name in the context, no need for revision matching */
dup = ly_ctx_get_submodule_latest(PARSER_CTX(ctx), submod->name);
/* main modules may have different revisions */
if (dup && strcmp(dup->mod->name, submod->mod->name)) {
LOGVAL_PARSER(ctx, LY_VCODE_NAME_COL, "submodules", dup->name);
return LY_EVALID;
}
return ret;
}
/**
* @brief Skip any redundant characters, namely whitespaces and comments.
*
* @param[in] ctx Yang parser context.
* @return LY_SUCCESS on success.
* @return LY_EVALID on invalid comment.
*/
static LY_ERR
skip_redundant_chars(struct lys_yang_parser_ctx *ctx)
{
/* read some trailing spaces, new lines, or comments */
while (ctx->in->current[0]) {
if (!strncmp(ctx->in->current, "//", 2)) {
/* one-line comment */
ly_in_skip(ctx->in, 2);
LY_CHECK_RET(skip_comment(ctx, 1));
} else if (!strncmp(ctx->in->current, "/*", 2)) {
/* block comment */
ly_in_skip(ctx->in, 2);
LY_CHECK_RET(skip_comment(ctx, 2));
} else if (isspace(ctx->in->current[0])) {
/* whitespace */
if (ctx->in->current[0] == '\n') {
LY_IN_NEW_LINE(ctx->in);
}
ly_in_skip(ctx->in, 1);
} else {
break;
}
}
return LY_SUCCESS;
}
LY_ERR
yang_parse_submodule(struct lys_yang_parser_ctx **context, struct ly_ctx *ly_ctx, struct lys_parser_ctx *main_ctx,
struct ly_in *in, struct lysp_submodule **submod)
{
LY_ERR ret = LY_SUCCESS;
char *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_submodule *mod_p = NULL;
/* create context */
*context = calloc(1, sizeof **context);
LY_CHECK_ERR_RET(!(*context), LOGMEM(ly_ctx), LY_EMEM);
(*context)->format = LYS_IN_YANG;
(*context)->in = in;
if (main_ctx) {
/* Forward pointer to the main module. */
(*context)->main_ctx = main_ctx;
} else {
/* Set this submodule as the main module because its main
* module was not received from the callback or there is no
* callback set, see ::lys_parse_load().
*/
(*context)->main_ctx = (struct lys_parser_ctx *)(*context);
}
mod_p = calloc(1, sizeof *mod_p);
LY_CHECK_ERR_GOTO(!mod_p, LOGMEM(ly_ctx); ret = LY_EMEM, cleanup);
mod_p->mod = main_ctx->parsed_mod->mod;
mod_p->parsing = 1;
(*context)->parsed_mod = (struct lysp_module *)mod_p;
LOG_LOCINIT(NULL, NULL, NULL, in);
/* skip redundant but valid characters at the beginning */
ret = skip_redundant_chars(*context);
LY_CHECK_GOTO(ret, cleanup);
/* "module"/"submodule" */
ret = get_keyword(*context, &kw, &word, &word_len);
LY_CHECK_GOTO(ret, cleanup);
if (kw == LY_STMT_MODULE) {
LOGERR(ly_ctx, LY_EDENIED, "Input data contains module in situation when a submodule is expected.");
ret = LY_EINVAL;
goto cleanup;
} else if (kw != LY_STMT_SUBMODULE) {
LOGVAL_PARSER(*context, LY_VCODE_MOD_SUBOMD, ly_stmt2str(kw));
ret = LY_EVALID;
goto cleanup;
}
/* substatements */
ret = parse_submodule(*context, mod_p);
LY_CHECK_GOTO(ret, cleanup);
/* skip redundant but valid characters at the end */
ret = skip_redundant_chars(*context);
LY_CHECK_GOTO(ret, cleanup);
if (in->current[0]) {
LOGVAL_PARSER(*context, LY_VCODE_TRAILING_SUBMOD, 15, in->current, strlen(in->current) > 15 ? "..." : "");
ret = LY_EVALID;
goto cleanup;
}
mod_p->parsing = 0;
*submod = mod_p;
cleanup:
LOG_LOCBACK(0, 0, 0, 1);
if (ret) {
lysp_module_free((struct lysp_module *)mod_p);
yang_parser_ctx_free(*context);
*context = NULL;
}
return ret;
}
LY_ERR
yang_parse_module(struct lys_yang_parser_ctx **context, struct ly_in *in, struct lys_module *mod)
{
LY_ERR ret = LY_SUCCESS;
char *word;
size_t word_len;
enum ly_stmt kw;
struct lysp_module *mod_p = NULL;
/* create context */
*context = calloc(1, sizeof **context);
LY_CHECK_ERR_RET(!(*context), LOGMEM(mod->ctx), LY_EMEM);
(*context)->format = LYS_IN_YANG;
(*context)->in = in;
(*context)->main_ctx = (struct lys_parser_ctx *)(*context);
mod_p = calloc(1, sizeof *mod_p);
LY_CHECK_ERR_GOTO(!mod_p, LOGMEM(mod->ctx), cleanup);
mod_p->mod = mod;
mod_p->parsing = 1;
(*context)->parsed_mod = mod_p;
LOG_LOCINIT(NULL, NULL, NULL, in);
/* skip redundant but valid characters at the beginning */
ret = skip_redundant_chars(*context);
LY_CHECK_GOTO(ret, cleanup);
/* "module"/"submodule" */
ret = get_keyword(*context, &kw, &word, &word_len);
LY_CHECK_GOTO(ret, cleanup);
if (kw == LY_STMT_SUBMODULE) {
LOGERR(mod->ctx, LY_EDENIED, "Input data contains submodule which cannot be parsed directly without its main module.");
ret = LY_EINVAL;
goto cleanup;
} else if (kw != LY_STMT_MODULE) {
LOGVAL_PARSER((*context), LY_VCODE_MOD_SUBOMD, ly_stmt2str(kw));
ret = LY_EVALID;
goto cleanup;
}
/* substatements */
ret = parse_module(*context, mod_p);
LY_CHECK_GOTO(ret, cleanup);
/* skip redundant but valid characters at the end */
ret = skip_redundant_chars(*context);
LY_CHECK_GOTO(ret, cleanup);
if (in->current[0]) {
LOGVAL_PARSER(*context, LY_VCODE_TRAILING_MOD, 15, in->current, strlen(in->current) > 15 ? "..." : "");
ret = LY_EVALID;
goto cleanup;
}
mod_p->parsing = 0;
mod->parsed = mod_p;
cleanup:
LOG_LOCBACK(0, 0, 0, 1);
if (ret) {
lysp_module_free(mod_p);
yang_parser_ctx_free(*context);
*context = NULL;
}
return ret;
}