diff options
Diffstat (limited to 'edify/parser.y')
-rw-r--r-- | edify/parser.y | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/edify/parser.y b/edify/parser.y deleted file mode 100644 index 098a6370a..000000000 --- a/edify/parser.y +++ /dev/null @@ -1,139 +0,0 @@ -%{ -/* - * Copyright (C) 2009 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "expr.h" -#include "yydefs.h" -#include "parser.h" - -extern int gLine; -extern int gColumn; - -void yyerror(Expr** root, int* error_count, const char* s); -int yyparse(Expr** root, int* error_count); - -struct yy_buffer_state; -void yy_switch_to_buffer(struct yy_buffer_state* new_buffer); -struct yy_buffer_state* yy_scan_string(const char* yystr); - -%} - -%locations - -%union { - char* str; - Expr* expr; - struct { - int argc; - Expr** argv; - } args; -} - -%token AND OR SUBSTR SUPERSTR EQ NE IF THEN ELSE ENDIF -%token <str> STRING BAD -%type <expr> expr -%type <args> arglist - -%parse-param {Expr** root} -%parse-param {int* error_count} -%error-verbose - -/* declarations in increasing order of precedence */ -%left ';' -%left ',' -%left OR -%left AND -%left EQ NE -%left '+' -%right '!' - -%% - -input: expr { *root = $1; } -; - -expr: STRING { - $$ = reinterpret_cast<Expr*>(malloc(sizeof(Expr))); - $$->fn = Literal; - $$->name = $1; - $$->argc = 0; - $$->argv = NULL; - $$->start = @$.start; - $$->end = @$.end; -} -| '(' expr ')' { $$ = $2; $$->start=@$.start; $$->end=@$.end; } -| expr ';' { $$ = $1; $$->start=@1.start; $$->end=@1.end; } -| expr ';' expr { $$ = Build(SequenceFn, @$, 2, $1, $3); } -| error ';' expr { $$ = $3; $$->start=@$.start; $$->end=@$.end; } -| expr '+' expr { $$ = Build(ConcatFn, @$, 2, $1, $3); } -| expr EQ expr { $$ = Build(EqualityFn, @$, 2, $1, $3); } -| expr NE expr { $$ = Build(InequalityFn, @$, 2, $1, $3); } -| expr AND expr { $$ = Build(LogicalAndFn, @$, 2, $1, $3); } -| expr OR expr { $$ = Build(LogicalOrFn, @$, 2, $1, $3); } -| '!' expr { $$ = Build(LogicalNotFn, @$, 1, $2); } -| IF expr THEN expr ENDIF { $$ = Build(IfElseFn, @$, 2, $2, $4); } -| IF expr THEN expr ELSE expr ENDIF { $$ = Build(IfElseFn, @$, 3, $2, $4, $6); } -| STRING '(' arglist ')' { - $$ = reinterpret_cast<Expr*>(malloc(sizeof(Expr))); - $$->fn = FindFunction($1); - if ($$->fn == NULL) { - char buffer[256]; - snprintf(buffer, sizeof(buffer), "unknown function \"%s\"", $1); - yyerror(root, error_count, buffer); - YYERROR; - } - $$->name = $1; - $$->argc = $3.argc; - $$->argv = $3.argv; - $$->start = @$.start; - $$->end = @$.end; -} -; - -arglist: /* empty */ { - $$.argc = 0; - $$.argv = NULL; -} -| expr { - $$.argc = 1; - $$.argv = reinterpret_cast<Expr**>(malloc(sizeof(Expr*))); - $$.argv[0] = $1; -} -| arglist ',' expr { - $$.argc = $1.argc + 1; - $$.argv = reinterpret_cast<Expr**>(realloc($$.argv, $$.argc * sizeof(Expr*))); - $$.argv[$$.argc-1] = $3; -} -; - -%% - -void yyerror(Expr** root, int* error_count, const char* s) { - if (strlen(s) == 0) { - s = "syntax error"; - } - printf("line %d col %d: %s\n", gLine, gColumn, s); - ++*error_count; -} - -int parse_string(const char* str, Expr** root, int* error_count) { - yy_switch_to_buffer(yy_scan_string(str)); - return yyparse(root, error_count); -} |