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-rw-r--r--grammar.y372
1 files changed, 0 insertions, 372 deletions
diff --git a/grammar.y b/grammar.y
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-/* -*- mode: C -*- */
-/* ----------------------------------------------------------------------------
- libconfig - A library for processing structured configuration files
- Copyright (C) 2005-2008 Mark A Lindner
-
- This file is part of libconfig.
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public License
- as published by the Free Software Foundation; either version 2.1 of
- the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, see
- <http://www.gnu.org/licenses/>.
- ----------------------------------------------------------------------------
-*/
-
-%defines
-%output="y.tab.c"
-%pure-parser
-%lex-param{void *scanner}
-%parse-param{void *scanner}
-%parse-param{struct parse_context *ctx}
-
-%{
-#include <string.h>
-#include <stdlib.h>
-#include "libconfig.h"
-#ifdef WIN32
-#include "wincompat.h"
-
-/* prevent warnings about redefined malloc/free in generated code: */
-#ifndef _STDLIB_H
-#define _STDLIB_H
-#endif
-
-#include <malloc.h>
-#endif
-#include "private.h"
-
-/* these delcarations are provided to suppress compiler warnings */
-extern int libconfig_yylex();
-extern int libconfig_yyget_lineno();
-
-static const char *err_array_elem_type = "mismatched element type in array";
-static const char *err_duplicate_setting = "duplicate setting name";
-
-#define IN_ARRAY() \
- (ctx->parent && (ctx->parent->type == CONFIG_TYPE_ARRAY))
-
-#define IN_LIST() \
- (ctx->parent && (ctx->parent->type == CONFIG_TYPE_LIST))
-
-#define CAPTURE_PARSE_POS(S) \
- (S)->line = (unsigned int)libconfig_yyget_lineno(scanner)
-
-void libconfig_yyerror(void *scanner, struct parse_context *ctx,
- char const *s)
-{
- ctx->config->error_line = libconfig_yyget_lineno(scanner);
- ctx->config->error_text = s;
-}
-
-%}
-
-%union
-{
- long ival;
- long long llval;
- double fval;
- char *sval;
-}
-
-%token <ival> TOK_BOOLEAN TOK_INTEGER TOK_HEX
-%token <llval> TOK_INTEGER64 TOK_HEX64
-%token <fval> TOK_FLOAT
-%token <sval> TOK_STRING TOK_NAME
-%token TOK_EQUALS TOK_NEWLINE TOK_ARRAY_START TOK_ARRAY_END TOK_LIST_START TOK_LIST_END TOK_COMMA TOK_GROUP_START TOK_GROUP_END TOK_END TOK_GARBAGE
-
-%%
-
-configuration:
- /* empty */
- | setting_list
- ;
-
-setting_list:
- setting
- | setting_list setting
- ;
-
-setting_list_optional:
- /* empty */
- | setting_list
- ;
-
-setting:
- TOK_NAME
- {
- ctx->setting = config_setting_add(ctx->parent, $1, CONFIG_TYPE_NONE);
- free($1);
-
- if(ctx->setting == NULL)
- {
- libconfig_yyerror(scanner, ctx, err_duplicate_setting);
- YYABORT;
- }
- else
- {
- CAPTURE_PARSE_POS(ctx->setting);
- }
- }
-
- TOK_EQUALS value TOK_END
- ;
-
-array:
- TOK_ARRAY_START
- {
- if(IN_LIST())
- {
- ctx->parent = config_setting_add(ctx->parent, NULL, CONFIG_TYPE_ARRAY);
- CAPTURE_PARSE_POS(ctx->parent);
- }
- else
- {
- ctx->setting->type = CONFIG_TYPE_ARRAY;
- ctx->parent = ctx->setting;
- ctx->setting = NULL;
- }
- }
- simple_value_list_optional
- TOK_ARRAY_END
- {
- if(ctx->parent)
- ctx->parent = ctx->parent->parent;
- }
- ;
-
-list:
- TOK_LIST_START
- {
- if(IN_LIST())
- {
- ctx->parent = config_setting_add(ctx->parent, NULL, CONFIG_TYPE_LIST);
- CAPTURE_PARSE_POS(ctx->parent);
- }
- else
- {
- ctx->setting->type = CONFIG_TYPE_LIST;
- ctx->parent = ctx->setting;
- ctx->setting = NULL;
- }
- }
- value_list_optional
- TOK_LIST_END
- {
- if(ctx->parent)
- ctx->parent = ctx->parent->parent;
- }
- ;
-
-value:
- simple_value
- | array
- | list
- | group
- ;
-
-simple_value:
- TOK_BOOLEAN
- {
- if(IN_ARRAY() || IN_LIST())
- {
- config_setting_t *e = config_setting_set_bool_elem(ctx->parent, -1,
- (int)$1);
-
- if(! e)
- {
- libconfig_yyerror(scanner, ctx, err_array_elem_type);
- YYABORT;
- }
- else
- {
- CAPTURE_PARSE_POS(e);
- }
- }
- else
- config_setting_set_bool(ctx->setting, (int)$1);
- }
- | TOK_INTEGER
- {
- if(IN_ARRAY() || IN_LIST())
- {
- config_setting_t *e = config_setting_set_int_elem(ctx->parent, -1, $1);
- if(! e)
- {
- libconfig_yyerror(scanner, ctx, err_array_elem_type);
- YYABORT;
- }
- else
- {
- config_setting_set_format(e, CONFIG_FORMAT_DEFAULT);
- CAPTURE_PARSE_POS(e);
- }
- }
- else
- {
- config_setting_set_int(ctx->setting, $1);
- config_setting_set_format(ctx->setting, CONFIG_FORMAT_DEFAULT);
- }
- }
- | TOK_INTEGER64
- {
- if(IN_ARRAY() || IN_LIST())
- {
- config_setting_t *e = config_setting_set_int64_elem(ctx->parent, -1, $1);
- if(! e)
- {
- libconfig_yyerror(scanner, ctx, err_array_elem_type);
- YYABORT;
- }
- else
- {
- config_setting_set_format(e, CONFIG_FORMAT_DEFAULT);
- CAPTURE_PARSE_POS(e);
- }
- }
- else
- {
- config_setting_set_int64(ctx->setting, $1);
- config_setting_set_format(ctx->setting, CONFIG_FORMAT_DEFAULT);
- }
- }
- | TOK_HEX
- {
- if(IN_ARRAY() || IN_LIST())
- {
- config_setting_t *e = config_setting_set_int_elem(ctx->parent, -1, $1);
- if(! e)
- {
- libconfig_yyerror(scanner, ctx, err_array_elem_type);
- YYABORT;
- }
- else
- {
- config_setting_set_format(e, CONFIG_FORMAT_HEX);
- CAPTURE_PARSE_POS(e);
- }
- }
- else
- {
- config_setting_set_int(ctx->setting, $1);
- config_setting_set_format(ctx->setting, CONFIG_FORMAT_HEX);
- }
- }
- | TOK_HEX64
- {
- if(IN_ARRAY() || IN_LIST())
- {
- config_setting_t *e = config_setting_set_int64_elem(ctx->parent, -1, $1);
- if(! e)
- {
- libconfig_yyerror(scanner, ctx, err_array_elem_type);
- YYABORT;
- }
- else
- {
- config_setting_set_format(e, CONFIG_FORMAT_HEX);
- CAPTURE_PARSE_POS(e);
- }
- }
- else
- {
- config_setting_set_int64(ctx->setting, $1);
- config_setting_set_format(ctx->setting, CONFIG_FORMAT_HEX);
- }
- }
- | TOK_FLOAT
- {
- if(IN_ARRAY() || IN_LIST())
- {
- config_setting_t *e = config_setting_set_float_elem(ctx->parent, -1, $1);
- if(! e)
- {
- libconfig_yyerror(scanner, ctx, err_array_elem_type);
- YYABORT;
- }
- else
- {
- CAPTURE_PARSE_POS(e);
- }
- }
- else
- config_setting_set_float(ctx->setting, $1);
- }
- | TOK_STRING
- {
- if(IN_ARRAY() || IN_LIST())
- {
- config_setting_t *e = config_setting_set_string_elem(ctx->parent, -1,
- $1);
- free($1);
-
- if(! e)
- {
- libconfig_yyerror(scanner, ctx, err_array_elem_type);
- YYABORT;
- }
- else
- {
- CAPTURE_PARSE_POS(e);
- }
- }
- else
- {
- config_setting_set_string(ctx->setting, $1);
- free($1);
- }
- }
- ;
-
-value_list:
- value
- | value_list TOK_COMMA value
- ;
-
-value_list_optional:
- /* empty */
- | value_list
- ;
-
-simple_value_list:
- simple_value
- | simple_value_list TOK_COMMA simple_value
- ;
-
-simple_value_list_optional:
- /* empty */
- | simple_value_list
- ;
-
-group:
- TOK_GROUP_START
- {
- if(IN_LIST())
- {
- ctx->parent = config_setting_add(ctx->parent, NULL, CONFIG_TYPE_GROUP);
- CAPTURE_PARSE_POS(ctx->parent);
- }
- else
- {
- ctx->setting->type = CONFIG_TYPE_GROUP;
- ctx->parent = ctx->setting;
- ctx->setting = NULL;
- }
- }
- setting_list_optional
- TOK_GROUP_END
- {
- if(ctx->parent)
- ctx->parent = ctx->parent->parent;
- }
- ;
-
-%%