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|
%defines
%{
# include <string>
# include "builder.h"
# include "build.tab.h"
void yyerror( YYLTYPE *locp, Builder &bld, char const *msg );
%}
%parse-param { Builder &bld }
%lex-param { Builder &bld }
%pure-parser
%locations
%debug
%error-verbose
%union {
char *strval;
int tval;
}
%token <strval> STRING "string literal"
%token <strval> REGEXP "regular expression"
%token <tval> TARGETTYPE "target type"
%token <strval> FUNCTION "function name"
%token TOK_ADDSET "+="
%token TOK_DEFAULT "default"
%token TOK_ACTION "action"
%token TOK_CHECK "check"
%token TOK_CLEAN "clean"
%token TOK_RULE "rule"
%token TOK_TARGET "target"
%token TOK_SET "set"
%token TOK_INPUT "input"
%token TOK_FILTER "filter"
%token TOK_PREFIX "prefix"
%token TOK_REQUIRES "requires"
%token TOK_MATCHES "matches"
%token TOK_PERFORM "perform"
%token TOK_PRODUCES "produces"
%token ',' ':' '=' '(' ')'
%destructor { delete[] $$; } STRING FUNCTION
%%
// General input format
input:
| input rule
| input action
| input target
;
// Rule interpretation
rule: TOK_RULE STRING {printf("Rule %s:\n", $2 ); } ':' rulecmds
;
rulecmds: rulecmd
| rulecmds ',' rulecmd
;
rulecmd: TOK_MATCHES REGEXP { printf(" Matches: %s\n", $2 ); }
| TOK_PRODUCES STRING { printf(" Produces: %s\n", $2 ); }
| TOK_REQUIRES { printf(" Requires:\n"); } list {printf("\n");}
| TOK_INPUT TOK_FILTER REGEXP { printf(" Input Filter: %s\n", $3 ); }
| TOK_INPUT TOK_FILTER { printf(" Input Filter: "); } func {printf("\n");}
| TOK_PERFORM { printf(" Perform: "); } func {printf("\n");}
;
// Action interpretation
action: TOK_DEFAULT TOK_ACTION ':' { printf("Default action:\n"); } actioncmds
| STRING TOK_ACTION ':' { printf("\"%s\" action:\n", $1 ); } actioncmds
;
actioncmds: actioncmd
| actioncmds ',' actioncmd
;
actioncmd: { printf("\t"); } actioncmdtype list {printf("\n");}
;
actioncmdtype: TOK_CHECK { printf("check "); }
| TOK_CLEAN { printf("clean "); }
;
// Target interpretation
target: list ':' { printf(" are targets:\n"); } targetcmds
;
targetcmds: targetcmd
| targetcmds ',' targetcmd
;
targetcmd: TOK_RULE STRING { printf(" Rule %s\n", $2 ); }
| TOK_TARGET TOK_PREFIX STRING { printf(" Target prefix: %s\n", $3 ); }
| TOK_TARGET TARGETTYPE { printf(" Target Type: %d\n", $2 ); }
| TOK_INPUT { printf(" Input: "); } list { printf("\n"); }
| TOK_REQUIRES { printf(" Requires: "); } list { printf("\n"); }
| TOK_SET { printf(" Set: "); } targetset
;
targetset: STRING '=' STRING { printf("%s = %s\n", $1, $3 ); }
| STRING TOK_ADDSET STRING { printf("%s += %s\n", $1, $3 ); }
;
// list goo
list: listitem listfilter
| '[' { printf("["); } listitems ']' { printf("]"); } listfilter
;
listfilter:
| TOK_FILTER REGEXP
| TOK_FILTER func
;
listitems: listitem
| listitems ',' {printf(", "); } listitem
;
listitem: STRING {printf("%s", $1 ); }
| func
;
// Function
func: FUNCTION { printf("%s(", $1 ); } '(' funcparams ')' { printf(")"); }
;
funcparams:
| STRING { printf("%s", $1 ); }
| funcparams ',' STRING { printf(", %s", $3 ); }
;
%%
void yyerror( YYLTYPE *locp, Builder &bld, char const *msg )
{
bld.error( locp, msg );
}
|
