simplecparser.m

ANTLR(ANother Tool for Language Recognition)它是这样的一种工具

	@finally {
		// token labels
		[_char_literal4 release];
		// token+rule list labels
		// rule labels
		[_variable2 release];
		[_functionHeader3 release];
		[_functionHeader5 release];
		[_block6 release];
		// rule refs in alts with rewrites
		[_list_functionHeader release];
		[_list_block release];
		[_list_21 release];
		[_retval setStop:[input LT:-1]];

		    [_retval setTree:(id)[adaptor postProcessTree:root_0]];
		    [adaptor setBoundariesForTree:[_retval tree] fromToken:[_retval start] toToken:[_retval stop]];

	}
	return _retval;
}
// $ANTLR end declaration

// $ANTLR start variable
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:26:1: variable : type declarator ';' -> ^( VAR_DEF type declarator ) ;
- (SimpleCParser_variable_return *) variable
{
    SimpleCParser_variable_return * _retval = [[SimpleCParser_variable_return alloc] init]; 
    [_retval setStart:[input LT:1]];

    id root_0 = nil;

    ANTLRToken * _char_literal9 = nil;
    SimpleCParser_type_return * _type7 = nil;

    SimpleCParser_declarator_return * _declarator8 = nil;

    NSMutableArray *_list_type = [[NSMutableArray alloc] init];
    NSMutableArray *_list_declarator = [[NSMutableArray alloc] init];
    NSMutableArray *_list_21 = [[NSMutableArray alloc] init];
    id _char_literal9_tree = nil;

    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:27:9: ( type declarator ';' -> ^( VAR_DEF type declarator ) ) // ruleBlockSingleAlt
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:27:9: type declarator ';' // alt
        {
        [following addObject:FOLLOW_type_in_variable166];
        _type7 = [self type];
        [following removeLastObject];


        [_list_type addObject:[_type7 tree]];
        [following addObject:FOLLOW_declarator_in_variable168];
        _declarator8 = [self declarator];
        [following removeLastObject];


        [_list_declarator addObject:[_declarator8 tree]];
        _char_literal9=(ANTLRToken *)[input LT:1];
        [_char_literal9 retain];
        [self match:input tokenType:21 follow:FOLLOW_21_in_variable170]; 
        [_list_21 addObject:_char_literal9];


        // AST REWRITE
        int i_0 = 0;
        [_retval setTree:root_0];
        root_0 = (id)[adaptor emptyTree];
        // 27:29: -> ^( VAR_DEF type declarator )
        {
            // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:27:32: ^( VAR_DEF type declarator )
            {
            id root_1 = (id)[adaptor emptyTree];
            root_1 = (id)[adaptor makeNode:[adaptor newTreeWithTokenType:SimpleCParser_VAR_DEF text:[tokenNames objectAtIndex:SimpleCParser_VAR_DEF]] parentOf:root_1];

            [adaptor addChild:(id<ANTLRTree>)[_list_type objectAtIndex:i_0] toTree:root_1];
            [adaptor addChild:(id<ANTLRTree>)[_list_declarator objectAtIndex:i_0] toTree:root_1];

            [adaptor addChild:root_1 toTree:root_0];
            }

        }



        }

    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		[_char_literal9 release];
		// token+rule list labels
		// rule labels
		[_type7 release];
		[_declarator8 release];
		// rule refs in alts with rewrites
		[_list_type release];
		[_list_declarator release];
		[_list_21 release];
		[_retval setStop:[input LT:-1]];

		    [_retval setTree:(id)[adaptor postProcessTree:root_0]];
		    [adaptor setBoundariesForTree:[_retval tree] fromToken:[_retval start] toToken:[_retval stop]];

	}
	return _retval;
}
// $ANTLR end variable

// $ANTLR start declarator
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:30:1: declarator : ID ;
- (SimpleCParser_declarator_return *) declarator
{
    SimpleCParser_declarator_return * _retval = [[SimpleCParser_declarator_return alloc] init]; 
    [_retval setStart:[input LT:1]];

    id root_0 = nil;

    ANTLRToken * _ID10 = nil;

    id _ID10_tree = nil;

    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:31:9: ( ID ) // ruleBlockSingleAlt
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:31:9: ID // alt
        {
        root_0 = (id)[adaptor emptyTree];

        _ID10=(ANTLRToken *)[input LT:1];
        [_ID10 retain];
        [self match:input tokenType:SimpleCParser_ID follow:FOLLOW_SimpleCParser_ID_in_declarator199]; 
        _ID10_tree = (id)[adaptor newTreeWithToken:_ID10];
        [adaptor addChild:_ID10_tree toTree:root_0];


        }

    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		[_ID10 release];
		// token+rule list labels
		// rule labels
		// rule refs in alts with rewrites
		[_retval setStop:[input LT:-1]];

		    [_retval setTree:(id)[adaptor postProcessTree:root_0]];
		    [adaptor setBoundariesForTree:[_retval tree] fromToken:[_retval start] toToken:[_retval stop]];

	}
	return _retval;
}
// $ANTLR end declarator

// $ANTLR start functionHeader
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:34:1: functionHeader : type ID '(' ( formalParameter ( ',' formalParameter )* )? ')' -> ^( FUNC_HDR type ID ( formalParameter )+ ) ;
- (SimpleCParser_functionHeader_return *) functionHeader
{
    SimpleCParser_functionHeader_return * _retval = [[SimpleCParser_functionHeader_return alloc] init]; 
    [_retval setStart:[input LT:1]];

    id root_0 = nil;

    ANTLRToken * _ID12 = nil;
    ANTLRToken * _char_literal13 = nil;
    ANTLRToken * _char_literal15 = nil;
    ANTLRToken * _char_literal17 = nil;
    SimpleCParser_type_return * _type11 = nil;

    SimpleCParser_formalParameter_return * _formalParameter14 = nil;

    SimpleCParser_formalParameter_return * _formalParameter16 = nil;

    NSMutableArray *_list_formalParameter = [[NSMutableArray alloc] init];
    NSMutableArray *_list_type = [[NSMutableArray alloc] init];
    NSMutableArray *_list_24 = [[NSMutableArray alloc] init];
    NSMutableArray *_list_SimpleCParser_ID = [[NSMutableArray alloc] init];
    NSMutableArray *_list_22 = [[NSMutableArray alloc] init];
    NSMutableArray *_list_23 = [[NSMutableArray alloc] init];
    id _ID12_tree = nil;
    id _char_literal13_tree = nil;
    id _char_literal15_tree = nil;
    id _char_literal17_tree = nil;

    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:35:9: ( type ID '(' ( formalParameter ( ',' formalParameter )* )? ')' -> ^( FUNC_HDR type ID ( formalParameter )+ ) ) // ruleBlockSingleAlt
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:35:9: type ID '(' ( formalParameter ( ',' formalParameter )* )? ')' // alt
        {
        [following addObject:FOLLOW_type_in_functionHeader219];
        _type11 = [self type];
        [following removeLastObject];


        [_list_type addObject:[_type11 tree]];
        _ID12=(ANTLRToken *)[input LT:1];
        [_ID12 retain];
        [self match:input tokenType:SimpleCParser_ID follow:FOLLOW_SimpleCParser_ID_in_functionHeader221]; 
        [_list_SimpleCParser_ID addObject:_ID12];

        _char_literal13=(ANTLRToken *)[input LT:1];
        [_char_literal13 retain];
        [self match:input tokenType:22 follow:FOLLOW_22_in_functionHeader223]; 
        [_list_22 addObject:_char_literal13];

        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:35:21: ( formalParameter ( ',' formalParameter )* )? // block
        int alt4=2;
        {
        	int LA4_0 = [input LA:1];
        	if ( LA4_0==SimpleCParser_ID||(LA4_0>=SimpleCParser_INT_TYPE && LA4_0<=SimpleCParser_VOID) ) {
        		alt4 = 1;
        	}
        }
        switch (alt4) {
        	case 1 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:35:23: formalParameter ( ',' formalParameter )* // alt
        	    {
        	    [following addObject:FOLLOW_formalParameter_in_functionHeader227];
        	    _formalParameter14 = [self formalParameter];
        	    [following removeLastObject];


        	    [_list_formalParameter addObject:[_formalParameter14 tree]];
        	    do {
        	        int alt3=2;
        	        {
        	        	int LA3_0 = [input LA:1];
        	        	if ( LA3_0==23 ) {
        	        		alt3 = 1;
        	        	}

        	        }
        	        switch (alt3) {
        	    	case 1 :
        	    	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:35:41: ',' formalParameter // alt
        	    	    {
        	    	    _char_literal15=(ANTLRToken *)[input LT:1];
        	    	    [_char_literal15 retain];
        	    	    [self match:input tokenType:23 follow:FOLLOW_23_in_functionHeader231]; 
        	    	    [_list_23 addObject:_char_literal15];

        	    	    [following addObject:FOLLOW_formalParameter_in_functionHeader233];
        	    	    _formalParameter16 = [self formalParameter];
        	    	    [following removeLastObject];


        	    	    [_list_formalParameter addObject:[_formalParameter16 tree]];

        	    	    }
        	    	    break;

        	    	default :
        	    	    goto loop3;
        	        }
        	    } while (YES); loop3: ;


        	    }
        	    break;

        }

        _char_literal17=(ANTLRToken *)[input LT:1];
        [_char_literal17 retain];
        [self match:input tokenType:24 follow:FOLLOW_24_in_functionHeader241]; 
        [_list_24 addObject:_char_literal17];


        // AST REWRITE
        int i_0 = 0;
        [_retval setTree:root_0];
        root_0 = (id)[adaptor emptyTree];
        // 36:9: -> ^( FUNC_HDR type ID ( formalParameter )+ )
        {
            // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:36:12: ^( FUNC_HDR type ID ( formalParameter )+ )
            {
            id root_1 = (id)[adaptor emptyTree];
            root_1 = (id)[adaptor makeNode:[adaptor newTreeWithTokenType:SimpleCParser_FUNC_HDR text:[tokenNames objectAtIndex:SimpleCParser_FUNC_HDR]] parentOf:root_1];

            [adaptor addChild:(id<ANTLRTree>)[_list_type objectAtIndex:i_0] toTree:root_1];
            [adaptor addTokenAsChild:(ANTLRToken *)[_list_SimpleCParser_ID objectAtIndex:i_0] toTree:root_1];
            // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:36:31: ( formalParameter )+
            {
            int n_1 = _list_formalParameter == nil ? 0 : [_list_formalParameter count];
             


            if ( n_1==0 ) @throw [NSException exceptionWithName:@"ANTLRTreeRewriteException" reason:@"Must have more than one element for (...)+ loops" userInfo:nil];
            int i_1;
            for (i_1=0; i_1<n_1; i_1++) {
                [adaptor addChild:(id<ANTLRTree>)[_list_formalParameter objectAtIndex:i_1] toTree:root_1];

            }
            }

            [adaptor addChild:root_1 toTree:root_0];
            }

        }



        }

    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		[_ID12 release];
		[_char_literal13 release];
		[_char_literal15 release];
		[_char_literal17 release];
		// token+rule list labels
		// rule labels
		[_type11 release];
		[_formalParameter14 release];
		[_formalParameter16 release];
		// rule refs in alts with rewrites
		[_list_formalParameter release];
		[_list_type release];
		[_list_24 release];
		[_list_SimpleCParser_ID release];
		[_list_22 release];
		[_list_23 release];
		[_retval setStop:[input LT:-1]];

		    [_retval setTree:(id)[adaptor postProcessTree:root_0]];
		    [adaptor setBoundariesForTree:[_retval tree] fromToken:[_retval start] toToken:[_retval stop]];

	}
	return _retval;
}
// $ANTLR end functionHeader

// $ANTLR start formalParameter
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:39:1: formalParameter : type declarator -> ^( ARG_DEF type declarator ) ;
- (SimpleCParser_formalParameter_return *) formalParameter
{
    SimpleCParser_formalParameter_return * _retval = [[SimpleCParser_formalParameter_return alloc] init]; 
    [_retval setStart:[input LT:1]];