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890 lines
22 KiB
890 lines
22 KiB
%{
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2006, Digium, Inc.
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*
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* Steve Murphy <murf@parsetree.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Bison Grammar description of AEL2.
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*
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*/
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#define ASTMM_LIBC ASTMM_REDIRECT
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#include "asterisk.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "asterisk/logger.h"
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#include "asterisk/lock.h"
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#include "asterisk/hashtab.h"
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#include "asterisk/ael_structs.h"
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#include "asterisk/utils.h"
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extern struct ast_flags ast_compat;
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pval * linku1(pval *head, pval *tail);
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static void set_dads(pval *dad, pval *child_list);
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void reset_parencount(yyscan_t yyscanner);
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void reset_semicount(yyscan_t yyscanner);
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void reset_argcount(yyscan_t yyscanner );
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#define YYLEX_PARAM ((struct parse_io *)parseio)->scanner
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#define YYERROR_VERBOSE 1
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extern char *my_file;
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#ifdef AAL_ARGCHECK
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int ael_is_funcname(char *name);
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#endif
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static char *ael_token_subst(const char *mess);
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%}
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%union {
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int intval; /* integer value, typically flags */
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char *str; /* strings */
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struct pval *pval; /* full objects */
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}
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%{
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/* declaring these AFTER the union makes things a lot simpler! */
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void yyerror(YYLTYPE *locp, struct parse_io *parseio, char const *s);
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int ael_yylex (YYSTYPE * yylval_param, YYLTYPE * yylloc_param , void * yyscanner);
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/* create a new object with start-end marker */
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pval *npval(pvaltype type, int first_line, int last_line,
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int first_column, int last_column);
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/* create a new object with start-end marker, simplified interface.
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* Must be declared here because YYLTYPE is not known before
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*/
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static pval *npval2(pvaltype type, YYLTYPE *first, YYLTYPE *last);
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/* another frontend for npval, this time for a string */
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static pval *nword(char *string, YYLTYPE *pos);
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/* update end position of an object, return the object */
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static pval *update_last(pval *, YYLTYPE *);
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%}
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%token KW_CONTEXT LC RC LP RP SEMI EQ COMMA COLON AMPER BAR AT
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%token KW_MACRO KW_GLOBALS KW_IGNOREPAT KW_SWITCH KW_IF KW_IFTIME KW_ELSE KW_RANDOM KW_ABSTRACT KW_EXTEND
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%token EXTENMARK KW_GOTO KW_JUMP KW_RETURN KW_BREAK KW_CONTINUE KW_REGEXTEN KW_HINT
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%token KW_FOR KW_WHILE KW_CASE KW_PATTERN KW_DEFAULT KW_CATCH KW_SWITCHES KW_ESWITCHES
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%token KW_INCLUDES KW_LOCAL
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%right BAR COMMA
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%token <str> word
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%type <pval>includes
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%type <pval>includeslist
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%type <pval>switchlist
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%type <pval>eswitches
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%type <pval>switches
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%type <pval>macro_statement
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%type <pval>macro_statements
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%type <pval>case_statement
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%type <pval>case_statements
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%type <pval>eval_arglist
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%type <pval>application_call
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%type <pval>application_call_head
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%type <pval>macro_call
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%type <pval>target jumptarget
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%type <pval>statement
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%type <pval>switch_statement
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%type <pval>if_like_head
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%type <pval>statements
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%type <pval>extension
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%type <pval>ignorepat
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%type <pval>element
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%type <pval>elements
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%type <pval>arglist
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%type <pval>assignment
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%type <pval>local_assignment
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%type <pval>global_statements
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%type <pval>globals
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%type <pval>macro
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%type <pval>context
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%type <pval>object
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%type <pval>objects
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%type <pval>file
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/* XXX lr changes */
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%type <pval>opt_else
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%type <pval>timespec
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%type <pval>included_entry
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%type <str>opt_word
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%type <str>context_name
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%type <str>timerange
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%type <str>goto_word
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%type <str>word_list
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%type <str>word3_list hint_word
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%type <str>test_expr
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%type <str>opt_pri
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%type <intval>opt_abstract
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/*
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* OPTIONS
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*/
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%locations /* track source location using @n variables (yylloc in flex) */
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%pure-parser /* pass yylval and yylloc as arguments to yylex(). */
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%name-prefix="ael_yy"
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/*
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* add an additional argument, parseio, to yyparse(),
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* which is then accessible in the grammar actions
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*/
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%parse-param {struct parse_io *parseio}
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/* there will be two shift/reduce conflicts, they involve the if statement, where a single statement occurs not wrapped in curlies in the "true" section
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the default action to shift will attach the else to the preceeding if. */
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%expect 30
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%error-verbose
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/*
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* declare destructors for objects.
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* The former is for pval, the latter for strings.
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* NOTE: we must not have a destructor for a 'file' object.
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*/
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%destructor {
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destroy_pval($$);
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prev_word=0;
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} includes includeslist switchlist eswitches switches
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macro_statement macro_statements case_statement case_statements
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eval_arglist application_call application_call_head
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macro_call target jumptarget statement switch_statement
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if_like_head statements extension
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ignorepat element elements arglist assignment local_assignment
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global_statements globals macro context object objects
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opt_else
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timespec included_entry
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%destructor { free($$);} word word_list goto_word word3_list opt_word context_name
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timerange
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test_expr
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opt_pri
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%%
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file : objects { $$ = parseio->pval = $1; }
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;
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objects : object {$$=$1;}
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| objects object { $$ = linku1($1, $2); }
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| objects error {$$=$1;}
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;
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object : context {$$=$1;}
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| macro {$$=$1;}
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| globals {$$=$1;}
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| SEMI {$$=0;/* allow older docs to be read */}
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;
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context_name : word { $$ = $1; }
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| KW_DEFAULT { $$ = strdup("default"); }
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;
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context : opt_abstract KW_CONTEXT context_name LC elements RC {
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$$ = npval2(PV_CONTEXT, &@1, &@6);
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$$->u1.str = $3;
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$$->u2.statements = $5;
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set_dads($$,$5);
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$$->u3.abstract = $1;}
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;
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/* optional "abstract" keyword XXX there is no regression test for this */
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opt_abstract: KW_ABSTRACT { $$ = 1; }
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| /* nothing */ { $$ = 0; }
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| KW_EXTEND { $$ = 2; }
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| KW_EXTEND KW_ABSTRACT { $$=3; }
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| KW_ABSTRACT KW_EXTEND { $$=3; }
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;
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macro : KW_MACRO word LP arglist RP LC macro_statements RC {
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$$ = npval2(PV_MACRO, &@1, &@8);
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$$->u1.str = $2; $$->u2.arglist = $4; $$->u3.macro_statements = $7;
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set_dads($$,$7);}
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;
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globals : KW_GLOBALS LC global_statements RC {
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$$ = npval2(PV_GLOBALS, &@1, &@4);
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$$->u1.statements = $3;
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set_dads($$,$3);}
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;
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global_statements : { $$ = NULL; }
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| global_statements assignment {$$ = linku1($1, $2); }
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| error global_statements {$$=$2;}
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;
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assignment : word EQ { reset_semicount(parseio->scanner); } word SEMI {
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$$ = npval2(PV_VARDEC, &@1, &@5);
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$$->u1.str = $1;
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$$->u2.val = $4; }
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;
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local_assignment : KW_LOCAL word EQ { reset_semicount(parseio->scanner); } word SEMI {
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$$ = npval2(PV_LOCALVARDEC, &@1, &@6);
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$$->u1.str = $2;
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$$->u2.val = $5; }
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;
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/* XXX this matches missing arguments, is this desired ? */
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arglist : /* empty */ { $$ = NULL; }
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| word { $$ = nword($1, &@1); }
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| arglist COMMA word { $$ = linku1($1, nword($3, &@3)); }
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| arglist error {$$=$1;}
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;
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elements : {$$=0;}
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| elements element { $$ = linku1($1, $2); }
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| error elements { $$=$2;}
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;
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element : extension {$$=$1;}
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| includes {$$=$1;}
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| switches {$$=$1;}
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| eswitches {$$=$1;}
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| ignorepat {$$=$1;}
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| assignment {$$=$1;}
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| local_assignment {$$=$1;}
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| word error {free($1); $$=0;}
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| SEMI {$$=0;/* allow older docs to be read */}
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;
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|
ignorepat : KW_IGNOREPAT EXTENMARK word SEMI {
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$$ = npval2(PV_IGNOREPAT, &@1, &@4);
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$$->u1.str = $3;}
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;
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|
extension : word EXTENMARK statement {
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$$ = npval2(PV_EXTENSION, &@1, &@3);
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$$->u1.str = $1;
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$$->u2.statements = $3; set_dads($$,$3);}
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| word AT word EXTENMARK statement {
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$$ = npval2(PV_EXTENSION, &@1, &@3);
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$$->u1.str = malloc(strlen($1)+strlen($3)+2);
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strcpy($$->u1.str,$1);
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strcat($$->u1.str,"@");
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strcat($$->u1.str,$3);
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free($1);
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$$->u2.statements = $5; set_dads($$,$5);}
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| KW_REGEXTEN word EXTENMARK statement {
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$$ = npval2(PV_EXTENSION, &@1, &@4);
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$$->u1.str = $2;
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$$->u2.statements = $4; set_dads($$,$4);
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$$->u4.regexten=1;}
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| KW_HINT LP hint_word RP word EXTENMARK statement {
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$$ = npval2(PV_EXTENSION, &@1, &@7);
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$$->u1.str = $5;
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$$->u2.statements = $7; set_dads($$,$7);
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$$->u3.hints = $3;}
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| KW_REGEXTEN KW_HINT LP hint_word RP word EXTENMARK statement {
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$$ = npval2(PV_EXTENSION, &@1, &@8);
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$$->u1.str = $6;
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$$->u2.statements = $8; set_dads($$,$8);
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$$->u4.regexten=1;
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$$->u3.hints = $4;}
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;
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|
/* list of statements in a block or after a case label - can be empty */
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statements : /* empty */ { $$ = NULL; }
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| statements statement { $$ = linku1($1, $2); }
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| error statements {$$=$2;}
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;
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/* hh:mm-hh:mm, due to the way the parser works we do not
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* detect the '-' but only the ':' as separator
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*/
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timerange: word3_list COLON word3_list COLON word3_list {
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if (asprintf(&$$, "%s:%s:%s", $1, $3, $5) < 0) {
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ast_log(LOG_WARNING, "asprintf() failed\n");
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$$ = NULL;
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} else {
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free($1);
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free($3);
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free($5);
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}
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}
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| word { $$ = $1; }
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;
|
|
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|
/* full time specification range|dow|*|* */
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timespec : timerange BAR word3_list BAR word3_list BAR word3_list {
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$$ = nword($1, &@1);
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$$->next = nword($3, &@3);
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$$->next->next = nword($5, &@5);
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$$->next->next->next = nword($7, &@7); }
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;
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/* expression used in if, random, while, switch */
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test_expr : LP { reset_parencount(parseio->scanner); } word_list RP { $$ = $3; }
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;
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|
/* 'if' like statements: if, iftime, random */
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if_like_head : KW_IF test_expr {
|
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$$= npval2(PV_IF, &@1, &@2);
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$$->u1.str = $2; }
|
|
| KW_RANDOM test_expr {
|
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$$ = npval2(PV_RANDOM, &@1, &@2);
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$$->u1.str=$2;}
|
|
| KW_IFTIME LP timespec RP {
|
|
$$ = npval2(PV_IFTIME, &@1, &@4);
|
|
$$->u1.list = $3;
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prev_word = 0; }
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;
|
|
|
|
/* word_list is a hack to fix a problem with context switching between bison and flex;
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by the time you register a new context with flex, you've already got a look-ahead token
|
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from the old context, with no way to put it back and start afresh. So, we kludge this
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and merge the words back together. */
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|
word_list : word { $$ = $1;}
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| word word {
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if (asprintf(&($$), "%s%s", $1, $2) < 0) {
|
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ast_log(LOG_WARNING, "asprintf() failed\n");
|
|
$$ = NULL;
|
|
} else {
|
|
free($1);
|
|
free($2);
|
|
prev_word = $$;
|
|
}
|
|
}
|
|
;
|
|
|
|
hint_word : word { $$ = $1; }
|
|
| hint_word word {
|
|
if (asprintf(&($$), "%s %s", $1, $2) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed\n");
|
|
$$ = NULL;
|
|
} else {
|
|
free($1);
|
|
free($2);
|
|
}
|
|
}
|
|
| hint_word COLON word {
|
|
if (asprintf(&($$), "%s:%s", $1, $3) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed\n");
|
|
$$ = NULL;
|
|
} else {
|
|
free($1);
|
|
free($3);
|
|
}
|
|
}
|
|
| hint_word AMPER word { /* there are often '&' in hints */
|
|
if (asprintf(&($$), "%s&%s", $1, $3) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed\n");
|
|
$$ = NULL;
|
|
} else {
|
|
free($1);
|
|
free($3);
|
|
}
|
|
}
|
|
| hint_word AT word {
|
|
if (asprintf(&($$), "%s@%s", $1, $3) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed\n");
|
|
$$ = NULL;
|
|
} else {
|
|
free($1);
|
|
free($3);
|
|
}
|
|
}
|
|
;
|
|
|
|
word3_list : word { $$ = $1;}
|
|
| word word {
|
|
if (asprintf(&($$), "%s%s", $1, $2) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed\n");
|
|
$$ = NULL;
|
|
} else {
|
|
free($1);
|
|
free($2);
|
|
prev_word = $$;
|
|
}
|
|
}
|
|
| word word word {
|
|
if (asprintf(&($$), "%s%s%s", $1, $2, $3) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed\n");
|
|
$$ = NULL;
|
|
} else {
|
|
free($1);
|
|
free($2);
|
|
free($3);
|
|
prev_word=$$;
|
|
}
|
|
}
|
|
;
|
|
|
|
goto_word : word { $$ = $1;}
|
|
| word word {
|
|
if (asprintf(&($$), "%s%s", $1, $2) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed\n");
|
|
$$ = NULL;
|
|
} else {
|
|
free($1);
|
|
free($2);
|
|
}
|
|
}
|
|
| goto_word COLON word {
|
|
if (asprintf(&($$), "%s:%s", $1, $3) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed\n");
|
|
$$ = NULL;
|
|
} else {
|
|
free($1);
|
|
free($3);
|
|
}
|
|
}
|
|
;
|
|
|
|
switch_statement : KW_SWITCH test_expr LC case_statements RC {
|
|
$$ = npval2(PV_SWITCH, &@1, &@5);
|
|
$$->u1.str = $2;
|
|
$$->u2.statements = $4; set_dads($$,$4);}
|
|
;
|
|
|
|
/*
|
|
* Definition of a statememt in our language
|
|
*/
|
|
statement : LC statements RC {
|
|
$$ = npval2(PV_STATEMENTBLOCK, &@1, &@3);
|
|
$$->u1.list = $2; set_dads($$,$2);}
|
|
| assignment { $$ = $1; }
|
|
| local_assignment { $$ = $1; }
|
|
| KW_GOTO target SEMI {
|
|
$$ = npval2(PV_GOTO, &@1, &@3);
|
|
$$->u1.list = $2;}
|
|
| KW_JUMP jumptarget SEMI {
|
|
$$ = npval2(PV_GOTO, &@1, &@3);
|
|
$$->u1.list = $2;}
|
|
| word COLON {
|
|
$$ = npval2(PV_LABEL, &@1, &@2);
|
|
$$->u1.str = $1; }
|
|
| KW_FOR LP {reset_semicount(parseio->scanner);} word SEMI
|
|
{reset_semicount(parseio->scanner);} word SEMI
|
|
{reset_parencount(parseio->scanner);} word RP statement { /* XXX word_list maybe ? */
|
|
$$ = npval2(PV_FOR, &@1, &@12);
|
|
$$->u1.for_init = $4;
|
|
$$->u2.for_test=$7;
|
|
$$->u3.for_inc = $10;
|
|
$$->u4.for_statements = $12; set_dads($$,$12);}
|
|
| KW_WHILE test_expr statement {
|
|
$$ = npval2(PV_WHILE, &@1, &@3);
|
|
$$->u1.str = $2;
|
|
$$->u2.statements = $3; set_dads($$,$3);}
|
|
| switch_statement { $$ = $1; }
|
|
| AMPER macro_call SEMI { $$ = update_last($2, &@2); }
|
|
| application_call SEMI { $$ = update_last($1, &@2); }
|
|
| word SEMI {
|
|
$$= npval2(PV_APPLICATION_CALL, &@1, &@2);
|
|
$$->u1.str = $1;}
|
|
| application_call EQ {reset_semicount(parseio->scanner);} word SEMI {
|
|
char *bufx;
|
|
int tot=0;
|
|
pval *pptr;
|
|
$$ = npval2(PV_VARDEC, &@1, &@5);
|
|
$$->u2.val=$4;
|
|
/* rebuild the original string-- this is not an app call, it's an unwrapped vardec, with a func call on the LHS */
|
|
/* string to big to fit in the buffer? */
|
|
tot+=strlen($1->u1.str);
|
|
for(pptr=$1->u2.arglist;pptr;pptr=pptr->next) {
|
|
tot+=strlen(pptr->u1.str);
|
|
tot++; /* for a sep like a comma */
|
|
}
|
|
tot+=4; /* for safety */
|
|
bufx = calloc(1, tot);
|
|
strcpy(bufx,$1->u1.str);
|
|
strcat(bufx,"(");
|
|
/* XXX need to advance the pointer or the loop is very inefficient */
|
|
for (pptr=$1->u2.arglist;pptr;pptr=pptr->next) {
|
|
if ( pptr != $1->u2.arglist )
|
|
strcat(bufx,",");
|
|
strcat(bufx,pptr->u1.str);
|
|
}
|
|
strcat(bufx,")");
|
|
#ifdef AAL_ARGCHECK
|
|
if ( !ael_is_funcname($1->u1.str) )
|
|
ast_log(LOG_WARNING, "==== File: %s, Line %d, Cols: %d-%d: Function call? The name %s is not in my internal list of function names\n",
|
|
my_file, @1.first_line, @1.first_column, @1.last_column, $1->u1.str);
|
|
#endif
|
|
$$->u1.str = bufx;
|
|
destroy_pval($1); /* the app call it is not, get rid of that chain */
|
|
prev_word = 0;
|
|
}
|
|
| KW_BREAK SEMI { $$ = npval2(PV_BREAK, &@1, &@2); }
|
|
| KW_RETURN SEMI { $$ = npval2(PV_RETURN, &@1, &@2); }
|
|
| KW_CONTINUE SEMI { $$ = npval2(PV_CONTINUE, &@1, &@2); }
|
|
| if_like_head statement opt_else {
|
|
$$ = update_last($1, &@2);
|
|
$$->u2.statements = $2; set_dads($$,$2);
|
|
$$->u3.else_statements = $3;set_dads($$,$3);}
|
|
| SEMI { $$=0; }
|
|
;
|
|
|
|
opt_else : KW_ELSE statement { $$ = $2; }
|
|
| { $$ = NULL ; }
|
|
|
|
|
|
target : goto_word { $$ = nword($1, &@1); }
|
|
| goto_word BAR goto_word {
|
|
$$ = nword($1, &@1);
|
|
$$->next = nword($3, &@3); }
|
|
| goto_word COMMA goto_word {
|
|
$$ = nword($1, &@1);
|
|
$$->next = nword($3, &@3); }
|
|
| goto_word BAR goto_word BAR goto_word {
|
|
$$ = nword($1, &@1);
|
|
$$->next = nword($3, &@3);
|
|
$$->next->next = nword($5, &@5); }
|
|
| goto_word COMMA goto_word COMMA goto_word {
|
|
$$ = nword($1, &@1);
|
|
$$->next = nword($3, &@3);
|
|
$$->next->next = nword($5, &@5); }
|
|
| KW_DEFAULT BAR goto_word BAR goto_word {
|
|
$$ = nword(strdup("default"), &@1);
|
|
$$->next = nword($3, &@3);
|
|
$$->next->next = nword($5, &@5); }
|
|
| KW_DEFAULT COMMA goto_word COMMA goto_word {
|
|
$$ = nword(strdup("default"), &@1);
|
|
$$->next = nword($3, &@3);
|
|
$$->next->next = nword($5, &@5); }
|
|
;
|
|
|
|
opt_pri : /* empty */ { $$ = strdup("1"); }
|
|
| COMMA word { $$ = $2; }
|
|
;
|
|
|
|
/* XXX please document the form of jumptarget */
|
|
jumptarget : goto_word opt_pri { /* ext[, pri] default 1 */
|
|
$$ = nword($1, &@1);
|
|
$$->next = nword($2, &@2); } /* jump extension[,priority][@context] */
|
|
| goto_word opt_pri AT context_name { /* context, ext, pri */
|
|
$$ = nword($4, &@4);
|
|
$$->next = nword($1, &@1);
|
|
$$->next->next = nword($2, &@2); }
|
|
;
|
|
|
|
macro_call : word LP {reset_argcount(parseio->scanner);} eval_arglist RP {
|
|
/* XXX original code had @2 but i think we need @5 */
|
|
$$ = npval2(PV_MACRO_CALL, &@1, &@5);
|
|
$$->u1.str = $1;
|
|
$$->u2.arglist = $4;}
|
|
| word LP RP {
|
|
$$= npval2(PV_MACRO_CALL, &@1, &@3);
|
|
$$->u1.str = $1; }
|
|
;
|
|
|
|
/* XXX application_call_head must be revised. Having 'word LP { ...'
|
|
* just as above should work fine, however it gives a different result.
|
|
*/
|
|
application_call_head: word LP {reset_argcount(parseio->scanner);} {
|
|
if (strcasecmp($1,"goto") == 0) {
|
|
$$ = npval2(PV_GOTO, &@1, &@2);
|
|
free($1); /* won't be using this */
|
|
ast_log(LOG_WARNING, "==== File: %s, Line %d, Cols: %d-%d: Suggestion: Use the goto statement instead of the Goto() application call in AEL.\n", my_file, @1.first_line, @1.first_column, @1.last_column );
|
|
} else {
|
|
$$= npval2(PV_APPLICATION_CALL, &@1, &@2);
|
|
$$->u1.str = $1;
|
|
} }
|
|
;
|
|
|
|
application_call : application_call_head eval_arglist RP {
|
|
$$ = update_last($1, &@3);
|
|
if( $$->type == PV_GOTO )
|
|
$$->u1.list = $2;
|
|
else
|
|
$$->u2.arglist = $2;
|
|
}
|
|
| application_call_head RP { $$ = update_last($1, &@2); }
|
|
;
|
|
|
|
opt_word : word { $$ = $1 }
|
|
| { $$ = strdup(""); }
|
|
;
|
|
|
|
eval_arglist : word_list { $$ = nword($1, &@1); }
|
|
| /*nothing! */ {
|
|
$$= npval(PV_WORD,0/*@1.first_line*/,0/*@1.last_line*/,0/* @1.first_column*/, 0/*@1.last_column*/);
|
|
$$->u1.str = strdup(""); }
|
|
| eval_arglist COMMA opt_word { $$ = linku1($1, nword($3, &@3)); }
|
|
;
|
|
|
|
case_statements: /* empty */ { $$ = NULL; }
|
|
| case_statements case_statement { $$ = linku1($1, $2); }
|
|
;
|
|
|
|
case_statement: KW_CASE word COLON statements {
|
|
$$ = npval2(PV_CASE, &@1, &@3); /* XXX 3 or 4 ? */
|
|
$$->u1.str = $2;
|
|
$$->u2.statements = $4; set_dads($$,$4);}
|
|
| KW_DEFAULT COLON statements {
|
|
$$ = npval2(PV_DEFAULT, &@1, &@3);
|
|
$$->u1.str = NULL;
|
|
$$->u2.statements = $3;set_dads($$,$3);}
|
|
| KW_PATTERN word COLON statements {
|
|
$$ = npval2(PV_PATTERN, &@1, &@4); /* XXX@3 or @4 ? */
|
|
$$->u1.str = $2;
|
|
$$->u2.statements = $4;set_dads($$,$4);}
|
|
;
|
|
|
|
macro_statements: /* empty */ { $$ = NULL; }
|
|
| macro_statements macro_statement { $$ = linku1($1, $2); }
|
|
;
|
|
|
|
macro_statement : statement {$$=$1;}
|
|
| includes { $$=$1;}
|
|
| KW_CATCH word LC statements RC {
|
|
$$ = npval2(PV_CATCH, &@1, &@5);
|
|
$$->u1.str = $2;
|
|
$$->u2.statements = $4; set_dads($$,$4);}
|
|
;
|
|
|
|
switches : KW_SWITCHES LC switchlist RC {
|
|
$$ = npval2(PV_SWITCHES, &@1, &@2);
|
|
$$->u1.list = $3; set_dads($$,$3);}
|
|
;
|
|
|
|
eswitches : KW_ESWITCHES LC switchlist RC {
|
|
$$ = npval2(PV_ESWITCHES, &@1, &@2);
|
|
$$->u1.list = $3; set_dads($$,$3);}
|
|
;
|
|
|
|
switchlist : /* empty */ { $$ = NULL; }
|
|
| switchlist word SEMI { $$ = linku1($1,nword($2, &@2)); }
|
|
| switchlist word AT word SEMI {
|
|
char *x;
|
|
if (asprintf(&x,"%s@%s", $2, $4) < 0) {
|
|
ast_log(LOG_WARNING, "asprintf() failed\n");
|
|
$$ = NULL;
|
|
} else {
|
|
free($2);
|
|
free($4);
|
|
$$ = linku1($1,nword(x, &@2));
|
|
}
|
|
}
|
|
| error switchlist {$$=$2;}
|
|
;
|
|
|
|
included_entry : context_name { $$ = nword($1, &@1); }
|
|
| context_name BAR timespec {
|
|
$$ = nword($1, &@1);
|
|
$$->u2.arglist = $3;
|
|
prev_word=0; /* XXX sure ? */ }
|
|
;
|
|
|
|
/* list of ';' separated context names followed by optional timespec */
|
|
includeslist : included_entry SEMI { $$ = $1; }
|
|
| includeslist included_entry SEMI { $$ = linku1($1, $2); }
|
|
| includeslist error {$$=$1;}
|
|
;
|
|
|
|
includes : KW_INCLUDES LC includeslist RC {
|
|
$$ = npval2(PV_INCLUDES, &@1, &@4);
|
|
$$->u1.list = $3;set_dads($$,$3);}
|
|
| KW_INCLUDES LC RC {
|
|
$$ = npval2(PV_INCLUDES, &@1, &@3);}
|
|
;
|
|
|
|
|
|
%%
|
|
|
|
static char *token_equivs1[] =
|
|
{
|
|
"AMPER",
|
|
"AT",
|
|
"BAR",
|
|
"COLON",
|
|
"COMMA",
|
|
"EQ",
|
|
"EXTENMARK",
|
|
"KW_BREAK",
|
|
"KW_CASE",
|
|
"KW_CATCH",
|
|
"KW_CONTEXT",
|
|
"KW_CONTINUE",
|
|
"KW_DEFAULT",
|
|
"KW_ELSE",
|
|
"KW_ESWITCHES",
|
|
"KW_FOR",
|
|
"KW_GLOBALS",
|
|
"KW_GOTO",
|
|
"KW_HINT",
|
|
"KW_IFTIME",
|
|
"KW_IF",
|
|
"KW_IGNOREPAT",
|
|
"KW_INCLUDES"
|
|
"KW_JUMP",
|
|
"KW_MACRO",
|
|
"KW_PATTERN",
|
|
"KW_REGEXTEN",
|
|
"KW_RETURN",
|
|
"KW_SWITCHES",
|
|
"KW_SWITCH",
|
|
"KW_WHILE",
|
|
"LC",
|
|
"LP",
|
|
"RC",
|
|
"RP",
|
|
"SEMI",
|
|
};
|
|
|
|
static char *token_equivs2[] =
|
|
{
|
|
"&",
|
|
"@",
|
|
"|",
|
|
":",
|
|
",",
|
|
"=",
|
|
"=>",
|
|
"break",
|
|
"case",
|
|
"catch",
|
|
"context",
|
|
"continue",
|
|
"default",
|
|
"else",
|
|
"eswitches",
|
|
"for",
|
|
"globals",
|
|
"goto",
|
|
"hint",
|
|
"ifTime",
|
|
"if",
|
|
"ignorepat",
|
|
"includes"
|
|
"jump",
|
|
"macro",
|
|
"pattern",
|
|
"regexten",
|
|
"return",
|
|
"switches",
|
|
"switch",
|
|
"while",
|
|
"{",
|
|
"(",
|
|
"}",
|
|
")",
|
|
";",
|
|
};
|
|
|
|
|
|
static char *ael_token_subst(const char *mess)
|
|
{
|
|
/* calc a length, malloc, fill, and return; yyerror had better free it! */
|
|
int len=0,i;
|
|
const char *p;
|
|
char *res, *s,*t;
|
|
int token_equivs_entries = sizeof(token_equivs1)/sizeof(char*);
|
|
|
|
for (p=mess; *p; p++) {
|
|
for (i=0; i<token_equivs_entries; i++) {
|
|
if ( strncmp(p,token_equivs1[i],strlen(token_equivs1[i])) == 0 )
|
|
{
|
|
len+=strlen(token_equivs2[i])+2;
|
|
p += strlen(token_equivs1[i])-1;
|
|
break;
|
|
}
|
|
}
|
|
len++;
|
|
}
|
|
res = calloc(1, len+1);
|
|
res[0] = 0;
|
|
s = res;
|
|
for (p=mess; *p;) {
|
|
int found = 0;
|
|
for (i=0; i<token_equivs_entries; i++) {
|
|
if ( strncmp(p,token_equivs1[i],strlen(token_equivs1[i])) == 0 ) {
|
|
*s++ = '\'';
|
|
for (t=token_equivs2[i]; *t;) {
|
|
*s++ = *t++;
|
|
}
|
|
*s++ = '\'';
|
|
p += strlen(token_equivs1[i]);
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
if( !found )
|
|
*s++ = *p++;
|
|
}
|
|
*s++ = 0;
|
|
return res;
|
|
}
|
|
|
|
void yyerror(YYLTYPE *locp, struct parse_io *parseio, char const *s)
|
|
{
|
|
char *s2 = ael_token_subst((char *)s);
|
|
if (locp->first_line == locp->last_line) {
|
|
ast_log(LOG_ERROR, "==== File: %s, Line %d, Cols: %d-%d: Error: %s\n", my_file, locp->first_line, locp->first_column, locp->last_column, s2);
|
|
} else {
|
|
ast_log(LOG_ERROR, "==== File: %s, Line %d Col %d to Line %d Col %d: Error: %s\n", my_file, locp->first_line, locp->first_column, locp->last_line, locp->last_column, s2);
|
|
}
|
|
free(s2);
|
|
parseio->syntax_error_count++;
|
|
}
|
|
|
|
struct pval *npval(pvaltype type, int first_line, int last_line,
|
|
int first_column, int last_column)
|
|
{
|
|
pval *z = calloc(1, sizeof(struct pval));
|
|
z->type = type;
|
|
z->startline = first_line;
|
|
z->endline = last_line;
|
|
z->startcol = first_column;
|
|
z->endcol = last_column;
|
|
z->filename = strdup(S_OR(my_file, "<none>"));
|
|
return z;
|
|
}
|
|
|
|
static struct pval *npval2(pvaltype type, YYLTYPE *first, YYLTYPE *last)
|
|
{
|
|
return npval(type, first->first_line, last->last_line,
|
|
first->first_column, last->last_column);
|
|
}
|
|
|
|
static struct pval *update_last(pval *obj, YYLTYPE *last)
|
|
{
|
|
obj->endline = last->last_line;
|
|
obj->endcol = last->last_column;
|
|
return obj;
|
|
}
|
|
|
|
/* frontend for npval to create a PV_WORD string from the given token */
|
|
static pval *nword(char *string, YYLTYPE *pos)
|
|
{
|
|
pval *p = npval2(PV_WORD, pos, pos);
|
|
if (p)
|
|
p->u1.str = string;
|
|
return p;
|
|
}
|
|
|
|
/* this routine adds a dad ptr to each element in the list */
|
|
static void set_dads(struct pval *dad, struct pval *child_list)
|
|
{
|
|
struct pval *t;
|
|
|
|
for(t=child_list;t;t=t->next) /* simple stuff */
|
|
t->dad = dad;
|
|
}
|