simplecparser.m

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

        		break;
        	case 25:
        		alt7 = 3;
        		break;
        	case 21:
        		alt7 = 5;
        		break;
        default:
         {
            ANTLRNoViableAltException *nvae = [ANTLRNoViableAltException exceptionWithDecision:7 state:0 stream:input];
        	@throw nvae;

        	}}
        switch (alt7) {
        	case 1 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:58:7: forStat // alt
        	    {
        	    root_0 = (id)[adaptor emptyTree];

        	    [following addObject:FOLLOW_forStat_in_stat449];
        	    _forStat24 = [self forStat];
        	    [following removeLastObject];


        	    [adaptor addChild:[_forStat24 tree] toTree:root_0];

        	    }
        	    break;
        	case 2 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:59:7: expr ';'! // alt
        	    {
        	    root_0 = (id)[adaptor emptyTree];

        	    [following addObject:FOLLOW_expr_in_stat457];
        	    _expr25 = [self expr];
        	    [following removeLastObject];


        	    [adaptor addChild:[_expr25 tree] toTree:root_0];
        	    _char_literal26=(ANTLRToken *)[input LT:1];
        	    [_char_literal26 retain];
        	    [self match:input tokenType:21 follow:FOLLOW_21_in_stat459]; 

        	    }
        	    break;
        	case 3 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:60:7: block // alt
        	    {
        	    root_0 = (id)[adaptor emptyTree];

        	    [following addObject:FOLLOW_block_in_stat468];
        	    _block27 = [self block];
        	    [following removeLastObject];


        	    [adaptor addChild:[_block27 tree] toTree:root_0];

        	    }
        	    break;
        	case 4 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:61:7: assignStat ';'! // alt
        	    {
        	    root_0 = (id)[adaptor emptyTree];

        	    [following addObject:FOLLOW_assignStat_in_stat476];
        	    _assignStat28 = [self assignStat];
        	    [following removeLastObject];


        	    [adaptor addChild:[_assignStat28 tree] toTree:root_0];
        	    _char_literal29=(ANTLRToken *)[input LT:1];
        	    [_char_literal29 retain];
        	    [self match:input tokenType:21 follow:FOLLOW_21_in_stat478]; 

        	    }
        	    break;
        	case 5 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:62:7: ';'! // alt
        	    {
        	    root_0 = (id)[adaptor emptyTree];

        	    _char_literal30=(ANTLRToken *)[input LT:1];
        	    [_char_literal30 retain];
        	    [self match:input tokenType:21 follow:FOLLOW_21_in_stat487]; 

        	    }
        	    break;

        }
    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		[_char_literal26 release];
		[_char_literal29 release];
		[_char_literal30 release];
		// token+rule list labels
		// rule labels
		[_forStat24 release];
		[_expr25 release];
		[_block27 release];
		[_assignStat28 release];
		// 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 stat

// $ANTLR start forStat
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:65:1: forStat : 'for' '(' start= assignStat ';' expr ';' next= assignStat ')' block -> ^( 'for' $start expr $next block ) ;
- (SimpleCParser_forStat_return *) forStat
{
    SimpleCParser_forStat_return * _retval = [[SimpleCParser_forStat_return alloc] init]; 
    [_retval setStart:[input LT:1]];

    id root_0 = nil;

    ANTLRToken * _string_literal31 = nil;
    ANTLRToken * _char_literal32 = nil;
    ANTLRToken * _char_literal33 = nil;
    ANTLRToken * _char_literal35 = nil;
    ANTLRToken * _char_literal36 = nil;
    SimpleCParser_assignStat_return * _start = nil;

    SimpleCParser_assignStat_return * _next = nil;

    SimpleCParser_expr_return * _expr34 = nil;

    SimpleCParser_block_return * _block37 = nil;

    NSMutableArray *_list_expr = [[NSMutableArray alloc] init];
    NSMutableArray *_list_assignStat = [[NSMutableArray alloc] init];
    NSMutableArray *_list_block = [[NSMutableArray alloc] init];
    NSMutableArray *_list_21 = [[NSMutableArray alloc] init];
    NSMutableArray *_list_24 = [[NSMutableArray alloc] init];
    NSMutableArray *_list_SimpleCParser_FOR = [[NSMutableArray alloc] init];
    NSMutableArray *_list_22 = [[NSMutableArray alloc] init];
    id _string_literal31_tree = nil;
    id _char_literal32_tree = nil;
    id _char_literal33_tree = nil;
    id _char_literal35_tree = nil;
    id _char_literal36_tree = nil;

    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:66:9: ( 'for' '(' start= assignStat ';' expr ';' next= assignStat ')' block -> ^( 'for' $start expr $next block ) ) // ruleBlockSingleAlt
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:66:9: 'for' '(' start= assignStat ';' expr ';' next= assignStat ')' block // alt
        {
        _string_literal31=(ANTLRToken *)[input LT:1];
        [_string_literal31 retain];
        [self match:input tokenType:SimpleCParser_FOR follow:FOLLOW_SimpleCParser_FOR_in_forStat507]; 
        [_list_SimpleCParser_FOR addObject:_string_literal31];

        _char_literal32=(ANTLRToken *)[input LT:1];
        [_char_literal32 retain];
        [self match:input tokenType:22 follow:FOLLOW_22_in_forStat509]; 
        [_list_22 addObject:_char_literal32];

        [following addObject:FOLLOW_assignStat_in_forStat513];
        _start = [self assignStat];
        [following removeLastObject];


        [_list_assignStat addObject:[_start tree]];
        _char_literal33=(ANTLRToken *)[input LT:1];
        [_char_literal33 retain];
        [self match:input tokenType:21 follow:FOLLOW_21_in_forStat515]; 
        [_list_21 addObject:_char_literal33];

        [following addObject:FOLLOW_expr_in_forStat517];
        _expr34 = [self expr];
        [following removeLastObject];


        [_list_expr addObject:[_expr34 tree]];
        _char_literal35=(ANTLRToken *)[input LT:1];
        [_char_literal35 retain];
        [self match:input tokenType:21 follow:FOLLOW_21_in_forStat519]; 
        [_list_21 addObject:_char_literal35];

        [following addObject:FOLLOW_assignStat_in_forStat523];
        _next = [self assignStat];
        [following removeLastObject];


        [_list_assignStat addObject:[_next tree]];
        _char_literal36=(ANTLRToken *)[input LT:1];
        [_char_literal36 retain];
        [self match:input tokenType:24 follow:FOLLOW_24_in_forStat525]; 
        [_list_24 addObject:_char_literal36];

        [following addObject:FOLLOW_block_in_forStat527];
        _block37 = [self block];
        [following removeLastObject];


        [_list_block addObject:[_block37 tree]];

        // AST REWRITE
        int i_0 = 0;
        [_retval setTree:root_0];
        root_0 = (id)[adaptor emptyTree];
        // 67:9: -> ^( 'for' $start expr $next block )
        {
            // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:67:12: ^( 'for' $start expr $next block )
            {
            id root_1 = (id)[adaptor emptyTree];
            root_1 = (id)[adaptor makeToken:(ANTLRToken *)[_list_SimpleCParser_FOR objectAtIndex:i_0] parentOf:root_1];

            [adaptor addChild:[_start tree] toTree:root_1];
            [adaptor addChild:(id<ANTLRTree>)[_list_expr objectAtIndex:i_0] toTree:root_1];
            [adaptor addChild:[_next tree] toTree:root_1];
            [adaptor addChild:(id<ANTLRTree>)[_list_block 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
		[_string_literal31 release];
		[_char_literal32 release];
		[_char_literal33 release];
		[_char_literal35 release];
		[_char_literal36 release];
		// token+rule list labels
		// rule labels
		[_start release];
		[_next release];
		[_expr34 release];
		[_block37 release];
		// rule refs in alts with rewrites
		[_list_expr release];
		[_list_assignStat release];
		[_list_block release];
		[_list_21 release];
		[_list_24 release];
		[_list_SimpleCParser_FOR release];
		[_list_22 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 forStat

// $ANTLR start assignStat
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:70:1: assignStat : ID EQ expr -> ^( EQ ID expr ) ;
- (SimpleCParser_assignStat_return *) assignStat
{
    SimpleCParser_assignStat_return * _retval = [[SimpleCParser_assignStat_return alloc] init]; 
    [_retval setStart:[input LT:1]];

    id root_0 = nil;

    ANTLRToken * _ID38 = nil;
    ANTLRToken * _EQ39 = nil;
    SimpleCParser_expr_return * _expr40 = nil;

    NSMutableArray *_list_expr = [[NSMutableArray alloc] init];
    NSMutableArray *_list_SimpleCParser_EQ = [[NSMutableArray alloc] init];
    NSMutableArray *_list_SimpleCParser_ID = [[NSMutableArray alloc] init];
    id _ID38_tree = nil;
    id _EQ39_tree = nil;

    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:71:9: ( ID EQ expr -> ^( EQ ID expr ) ) // ruleBlockSingleAlt
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:71:9: ID EQ expr // alt
        {
        _ID38=(ANTLRToken *)[input LT:1];
        [_ID38 retain];
        [self match:input tokenType:SimpleCParser_ID follow:FOLLOW_SimpleCParser_ID_in_assignStat570]; 
        [_list_SimpleCParser_ID addObject:_ID38];

        _EQ39=(ANTLRToken *)[input LT:1];
        [_EQ39 retain];
        [self match:input tokenType:SimpleCParser_EQ follow:FOLLOW_SimpleCParser_EQ_in_assignStat572]; 
        [_list_SimpleCParser_EQ addObject:_EQ39];

        [following addObject:FOLLOW_expr_in_assignStat574];
        _expr40 = [self expr];
        [following removeLastObject];


        [_list_expr addObject:[_expr40 tree]];

        // AST REWRITE
        int i_0 = 0;
        [_retval setTree:root_0];
        root_0 = (id)[adaptor emptyTree];
        // 71:20: -> ^( EQ ID expr )
        {
            // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/simplecTreeParser/SimpleC.g:71:23: ^( EQ ID expr )
            {
            id root_1 = (id)[adaptor emptyTree];
            root_1 = (id)[adaptor makeToken:(ANTLRToken *)[_list_SimpleCParser_EQ objectAtIndex:i_0] parentOf:root_1];

            [adaptor addTokenAsChild:(ANTLRToken *)[_list_SimpleCParser_ID objectAtIndex:i_0] toTree:root_1];
            [adaptor addChild:(id<ANTLRTree>)[_list_expr 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
		[_ID38 release];
		[_EQ39 release];
		// token+rule list labels
		// rule labels
		[_expr40 release];
		// rule refs in alts with rewrites
		[_list_expr release];
		[_list_SimpleCParser_EQ release];
		[_list_SimpleCParser_ID release];
		[_retval setStop:[input LT:-1]];

		    [_retval setTree:(id)[adaptor postProcessTree:root_0]];
		    [adaptor setBoundariesForTree:[_retval tree