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Wei Liu
6ec86e91c8
Originally only setting has line number recorded. Since we're moving to more sophisticated API, record the location for individual value. It is useful for error reporting. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
78 lines
2.1 KiB
Plaintext
78 lines
2.1 KiB
Plaintext
/* -*- fundamental -*- */
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/*
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* libxlu_cfg_l.y - xl configuration file parsing: parser
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*
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* Copyright (C) 2010 Citrix Ltd.
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* Author Ian Jackson <ian.jackson@eu.citrix.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; version 2.1 only. with the special
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* exception on linking described in file LICENSE.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*/
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%{
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#define ctx_scanner ctx->scanner
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#include "libxlu_cfg_i.h"
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#include "libxlu_cfg_l.h"
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%}
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%union {
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char *string;
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XLU_ConfigValue *value;
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}
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%locations
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%pure-parser
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%defines
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%error-verbose
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%name-prefix "xlu__cfg_yy"
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%parse-param { CfgParseContext *ctx }
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%lex-param { ctx_scanner }
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%token <string> IDENT STRING NUMBER NEWLINE
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%type <string> atom
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%destructor { free($$); } atom IDENT STRING NUMBER
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%type <value> value valuelist values
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%destructor { xlu__cfg_value_free($$); } value valuelist values
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%%
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file: stmts
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| stmts assignment
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stmts: /* empty */
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| stmts stmt
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stmt: assignment endstmt
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| endstmt
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| error NEWLINE
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assignment: IDENT '=' value { xlu__cfg_set_store(ctx,$1,$3,@3.first_line); }
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endstmt: NEWLINE
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| ';'
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value: atom { $$= xlu__cfg_string_mk(ctx,$1,&@1); }
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| '[' nlok valuelist ']' { $$= $3; }
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atom: STRING { $$= $1; }
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| NUMBER { $$= $1; }
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valuelist: /* empty */ { $$= xlu__cfg_list_mk(ctx,NULL,&yylloc); }
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| values { $$= $1; }
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| values ',' nlok { $$= $1; }
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values: value nlok { $$= xlu__cfg_list_mk(ctx,$1,&@1); }
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| values ',' nlok value nlok { xlu__cfg_list_append(ctx,$1,$4); $$= $1; }
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nlok:
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/* nothing */
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| nlok NEWLINE
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