simplecparser.m

antlr最新版本V3源代码

// $ANTLR 3.0b6 SimpleC.g 2007-02-01 01:27:57

#import "SimpleCParser.h"

#pragma mark Cyclic DFA
@implementation SimpleCParserDFA2
const static int SimpleCParserdfa2_eot[13] =
    {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1};
const static int SimpleCParserdfa2_eof[13] =
    {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1};
const static unichar SimpleCParserdfa2_min[13] =
    {4,4,7,4,0,4,7,9,0,0,4,4,9};
const static unichar SimpleCParserdfa2_max[13] =
    {13,4,8,13,0,4,14,10,0,0,13,4,10};
const static int SimpleCParserdfa2_accept[13] =
    {-1,-1,-1,-1,1,-1,-1,-1,3,2,-1,-1,-1};
const static int SimpleCParserdfa2_special[13] =
    {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1};
const static int SimpleCParserdfa2_transition[] = {};
const static int SimpleCParserdfa2_transition0[] = {2};
const static int SimpleCParserdfa2_transition1[] = {4, 3};
const static int SimpleCParserdfa2_transition2[] = {10, 6};
const static int SimpleCParserdfa2_transition3[] = {1, -1, -1, -1, -1, -1, 
	-1, 1, 1, 1};
const static int SimpleCParserdfa2_transition4[] = {7};
const static int SimpleCParserdfa2_transition5[] = {12};
const static int SimpleCParserdfa2_transition6[] = {5, -1, -1, -1, -1, -1, 
	6, 5, 5, 5};
const static int SimpleCParserdfa2_transition7[] = {11, -1, -1, -1, -1, 
	-1, -1, 11, 11, 11};
const static int SimpleCParserdfa2_transition8[] = {9, -1, -1, -1, -1, -1, 
	-1, 8};


- (id) initWithRecognizer:(ANTLRBaseRecognizer *) theRecognizer
{
	if ((self = [super initWithRecognizer:theRecognizer]) != nil) {
		eot = SimpleCParserdfa2_eot;
		eof = SimpleCParserdfa2_eof;
		min = SimpleCParserdfa2_min;
		max = SimpleCParserdfa2_max;
		accept = SimpleCParserdfa2_accept;
		special = SimpleCParserdfa2_special;
		if (!(transition = calloc(13, sizeof(void*)))) {
			[self release];
			return nil;
		}
		transition[0] = SimpleCParserdfa2_transition3;
		transition[1] = SimpleCParserdfa2_transition0;
		transition[2] = SimpleCParserdfa2_transition1;
		transition[3] = SimpleCParserdfa2_transition6;
		transition[4] = SimpleCParserdfa2_transition;
		transition[5] = SimpleCParserdfa2_transition4;
		transition[6] = SimpleCParserdfa2_transition8;
		transition[7] = SimpleCParserdfa2_transition2;
		transition[8] = SimpleCParserdfa2_transition;
		transition[9] = SimpleCParserdfa2_transition;
		transition[10] = SimpleCParserdfa2_transition7;
		transition[11] = SimpleCParserdfa2_transition5;
		transition[12] = SimpleCParserdfa2_transition2;
	}
	return self;
}

- (void) dealloc
{
	free(transition);
	[super dealloc];
}

- (NSString *) description
{
	return @"11:1: declaration : ( variable | functionHeader ';' | functionHeader block );";
}


@end



#pragma mark Bitsets
const static unsigned long long FOLLOW_declaration_in_program27_data[] = {0x0000000000003812LL};
static ANTLRBitSet *FOLLOW_declaration_in_program27;
const static unsigned long long FOLLOW_variable_in_declaration49_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_variable_in_declaration49;
const static unsigned long long FOLLOW_functionHeader_in_declaration59_data[] = {0x0000000000000080LL};
static ANTLRBitSet *FOLLOW_functionHeader_in_declaration59;
const static unsigned long long FOLLOW_7_in_declaration61_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_7_in_declaration61;
const static unsigned long long FOLLOW_functionHeader_in_declaration74_data[] = {0x0000000000004000LL};
static ANTLRBitSet *FOLLOW_functionHeader_in_declaration74;
const static unsigned long long FOLLOW_block_in_declaration76_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_block_in_declaration76;
const static unsigned long long FOLLOW_type_in_variable98_data[] = {0x0000000000000010LL};
static ANTLRBitSet *FOLLOW_type_in_variable98;
const static unsigned long long FOLLOW_declarator_in_variable100_data[] = {0x0000000000000080LL};
static ANTLRBitSet *FOLLOW_declarator_in_variable100;
const static unsigned long long FOLLOW_7_in_variable102_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_7_in_variable102;
const static unsigned long long FOLLOW_SimpleCParser_ID_in_declarator121_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_SimpleCParser_ID_in_declarator121;
const static unsigned long long FOLLOW_type_in_functionHeader150_data[] = {0x0000000000000010LL};
static ANTLRBitSet *FOLLOW_type_in_functionHeader150;
const static unsigned long long FOLLOW_SimpleCParser_ID_in_functionHeader152_data[] = {0x0000000000000100LL};
static ANTLRBitSet *FOLLOW_SimpleCParser_ID_in_functionHeader152;
const static unsigned long long FOLLOW_8_in_functionHeader154_data[] = {0x0000000000003C10LL};
static ANTLRBitSet *FOLLOW_8_in_functionHeader154;
const static unsigned long long FOLLOW_formalParameter_in_functionHeader158_data[] = {0x0000000000000600LL};
static ANTLRBitSet *FOLLOW_formalParameter_in_functionHeader158;
const static unsigned long long FOLLOW_9_in_functionHeader162_data[] = {0x0000000000003810LL};
static ANTLRBitSet *FOLLOW_9_in_functionHeader162;
const static unsigned long long FOLLOW_formalParameter_in_functionHeader164_data[] = {0x0000000000000600LL};
static ANTLRBitSet *FOLLOW_formalParameter_in_functionHeader164;
const static unsigned long long FOLLOW_10_in_functionHeader172_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_10_in_functionHeader172;
const static unsigned long long FOLLOW_type_in_formalParameter194_data[] = {0x0000000000000010LL};
static ANTLRBitSet *FOLLOW_type_in_formalParameter194;
const static unsigned long long FOLLOW_declarator_in_formalParameter196_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_declarator_in_formalParameter196;
const static unsigned long long FOLLOW_set_in_type223_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_set_in_type223;
const static unsigned long long FOLLOW_14_in_block285_data[] = {0x000000000001F9B0LL};
static ANTLRBitSet *FOLLOW_14_in_block285;
const static unsigned long long FOLLOW_variable_in_block299_data[] = {0x000000000001F9B0LL};
static ANTLRBitSet *FOLLOW_variable_in_block299;
const static unsigned long long FOLLOW_stat_in_block314_data[] = {0x000000000001C1B0LL};
static ANTLRBitSet *FOLLOW_stat_in_block314;
const static unsigned long long FOLLOW_15_in_block325_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_15_in_block325;
const static unsigned long long FOLLOW_forStat_in_stat337_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_forStat_in_stat337;
const static unsigned long long FOLLOW_expr_in_stat345_data[] = {0x0000000000000080LL};
static ANTLRBitSet *FOLLOW_expr_in_stat345;
const static unsigned long long FOLLOW_7_in_stat347_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_7_in_stat347;
const static unsigned long long FOLLOW_block_in_stat361_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_block_in_stat361;
const static unsigned long long FOLLOW_assignStat_in_stat369_data[] = {0x0000000000000080LL};
static ANTLRBitSet *FOLLOW_assignStat_in_stat369;
const static unsigned long long FOLLOW_7_in_stat371_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_7_in_stat371;
const static unsigned long long FOLLOW_7_in_stat379_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_7_in_stat379;
const static unsigned long long FOLLOW_16_in_forStat398_data[] = {0x0000000000000100LL};
static ANTLRBitSet *FOLLOW_16_in_forStat398;
const static unsigned long long FOLLOW_8_in_forStat400_data[] = {0x0000000000000010LL};
static ANTLRBitSet *FOLLOW_8_in_forStat400;
const static unsigned long long FOLLOW_assignStat_in_forStat402_data[] = {0x0000000000000080LL};
static ANTLRBitSet *FOLLOW_assignStat_in_forStat402;
const static unsigned long long FOLLOW_7_in_forStat404_data[] = {0x0000000000000130LL};
static ANTLRBitSet *FOLLOW_7_in_forStat404;
const static unsigned long long FOLLOW_expr_in_forStat406_data[] = {0x0000000000000080LL};
static ANTLRBitSet *FOLLOW_expr_in_forStat406;
const static unsigned long long FOLLOW_7_in_forStat408_data[] = {0x0000000000000010LL};
static ANTLRBitSet *FOLLOW_7_in_forStat408;
const static unsigned long long FOLLOW_assignStat_in_forStat410_data[] = {0x0000000000000400LL};
static ANTLRBitSet *FOLLOW_assignStat_in_forStat410;
const static unsigned long long FOLLOW_10_in_forStat412_data[] = {0x0000000000004000LL};
static ANTLRBitSet *FOLLOW_10_in_forStat412;
const static unsigned long long FOLLOW_block_in_forStat414_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_block_in_forStat414;
const static unsigned long long FOLLOW_SimpleCParser_ID_in_assignStat441_data[] = {0x0000000000020000LL};
static ANTLRBitSet *FOLLOW_SimpleCParser_ID_in_assignStat441;
const static unsigned long long FOLLOW_17_in_assignStat443_data[] = {0x0000000000000130LL};
static ANTLRBitSet *FOLLOW_17_in_assignStat443;
const static unsigned long long FOLLOW_expr_in_assignStat445_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_expr_in_assignStat445;
const static unsigned long long FOLLOW_condExpr_in_expr467_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_condExpr_in_expr467;
const static unsigned long long FOLLOW_aexpr_in_condExpr486_data[] = {0x00000000000C0002LL};
static ANTLRBitSet *FOLLOW_aexpr_in_condExpr486;
const static unsigned long long FOLLOW_set_in_condExpr491_data[] = {0x0000000000000130LL};
static ANTLRBitSet *FOLLOW_set_in_condExpr491;
const static unsigned long long FOLLOW_aexpr_in_condExpr498_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_aexpr_in_condExpr498;
const static unsigned long long FOLLOW_atom_in_aexpr520_data[] = {0x0000000000100002LL};
static ANTLRBitSet *FOLLOW_atom_in_aexpr520;
const static unsigned long long FOLLOW_20_in_aexpr524_data[] = {0x0000000000000130LL};
static ANTLRBitSet *FOLLOW_20_in_aexpr524;
const static unsigned long long FOLLOW_atom_in_aexpr526_data[] = {0x0000000000100002LL};
static ANTLRBitSet *FOLLOW_atom_in_aexpr526;
const static unsigned long long FOLLOW_SimpleCParser_ID_in_atom546_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_SimpleCParser_ID_in_atom546;
const static unsigned long long FOLLOW_SimpleCParser_INT_in_atom560_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_SimpleCParser_INT_in_atom560;
const static unsigned long long FOLLOW_8_in_atom574_data[] = {0x0000000000000130LL};
static ANTLRBitSet *FOLLOW_8_in_atom574;
const static unsigned long long FOLLOW_expr_in_atom576_data[] = {0x0000000000000400LL};
static ANTLRBitSet *FOLLOW_expr_in_atom576;
const static unsigned long long FOLLOW_10_in_atom578_data[] = {0x0000000000000002LL};
static ANTLRBitSet *FOLLOW_10_in_atom578;


#pragma mark Dynamic Global Scopes

#pragma mark Dynamic Rule Scopes

#pragma mark Rule return scopes start

@implementation SimpleCParser

+ (void) initialize
{
	FOLLOW_declaration_in_program27 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_declaration_in_program27_data count:1];
	FOLLOW_variable_in_declaration49 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_variable_in_declaration49_data count:1];
	FOLLOW_functionHeader_in_declaration59 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_functionHeader_in_declaration59_data count:1];
	FOLLOW_7_in_declaration61 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_7_in_declaration61_data count:1];
	FOLLOW_functionHeader_in_declaration74 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_functionHeader_in_declaration74_data count:1];
	FOLLOW_block_in_declaration76 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_block_in_declaration76_data count:1];
	FOLLOW_type_in_variable98 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_type_in_variable98_data count:1];
	FOLLOW_declarator_in_variable100 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_declarator_in_variable100_data count:1];
	FOLLOW_7_in_variable102 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_7_in_variable102_data count:1];
	FOLLOW_SimpleCParser_ID_in_declarator121 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_SimpleCParser_ID_in_declarator121_data count:1];
	FOLLOW_type_in_functionHeader150 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_type_in_functionHeader150_data count:1];
	FOLLOW_SimpleCParser_ID_in_functionHeader152 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_SimpleCParser_ID_in_functionHeader152_data count:1];
	FOLLOW_8_in_functionHeader154 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_8_in_functionHeader154_data count:1];
	FOLLOW_formalParameter_in_functionHeader158 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_formalParameter_in_functionHeader158_data count:1];
	FOLLOW_9_in_functionHeader162 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_9_in_functionHeader162_data count:1];
	FOLLOW_formalParameter_in_functionHeader164 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_formalParameter_in_functionHeader164_data count:1];
	FOLLOW_10_in_functionHeader172 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_10_in_functionHeader172_data count:1];
	FOLLOW_type_in_formalParameter194 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_type_in_formalParameter194_data count:1];
	FOLLOW_declarator_in_formalParameter196 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_declarator_in_formalParameter196_data count:1];
	FOLLOW_set_in_type223 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_set_in_type223_data count:1];
	FOLLOW_14_in_block285 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_14_in_block285_data count:1];
	FOLLOW_variable_in_block299 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_variable_in_block299_data count:1];
	FOLLOW_stat_in_block314 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_stat_in_block314_data count:1];
	FOLLOW_15_in_block325 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_15_in_block325_data count:1];
	FOLLOW_forStat_in_stat337 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_forStat_in_stat337_data count:1];
	FOLLOW_expr_in_stat345 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_expr_in_stat345_data count:1];
	FOLLOW_7_in_stat347 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_7_in_stat347_data count:1];
	FOLLOW_block_in_stat361 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_block_in_stat361_data count:1];
	FOLLOW_assignStat_in_stat369 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_assignStat_in_stat369_data count:1];
	FOLLOW_7_in_stat371 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_7_in_stat371_data count:1];
	FOLLOW_7_in_stat379 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_7_in_stat379_data count:1];
	FOLLOW_16_in_forStat398 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_16_in_forStat398_data count:1];
	FOLLOW_8_in_forStat400 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_8_in_forStat400_data count:1];
	FOLLOW_assignStat_in_forStat402 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_assignStat_in_forStat402_data count:1];
	FOLLOW_7_in_forStat404 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_7_in_forStat404_data count:1];
	FOLLOW_expr_in_forStat406 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_expr_in_forStat406_data count:1];
	FOLLOW_7_in_forStat408 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_7_in_forStat408_data count:1];
	FOLLOW_assignStat_in_forStat410 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_assignStat_in_forStat410_data count:1];
	FOLLOW_10_in_forStat412 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_10_in_forStat412_data count:1];
	FOLLOW_block_in_forStat414 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_block_in_forStat414_data count:1];
	FOLLOW_SimpleCParser_ID_in_assignStat441 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_SimpleCParser_ID_in_assignStat441_data count:1];
	FOLLOW_17_in_assignStat443 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_17_in_assignStat443_data count:1];
	FOLLOW_expr_in_assignStat445 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_expr_in_assignStat445_data count:1];
	FOLLOW_condExpr_in_expr467 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_condExpr_in_expr467_data count:1];
	FOLLOW_aexpr_in_condExpr486 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_aexpr_in_condExpr486_data count:1];
	FOLLOW_set_in_condExpr491 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_set_in_condExpr491_data count:1];
	FOLLOW_aexpr_in_condExpr498 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_aexpr_in_condExpr498_data count:1];
	FOLLOW_atom_in_aexpr520 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_atom_in_aexpr520_data count:1];
	FOLLOW_20_in_aexpr524 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_20_in_aexpr524_data count:1];
	FOLLOW_atom_in_aexpr526 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_atom_in_aexpr526_data count:1];
	FOLLOW_SimpleCParser_ID_in_atom546 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_SimpleCParser_ID_in_atom546_data count:1];
	FOLLOW_SimpleCParser_INT_in_atom560 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_SimpleCParser_INT_in_atom560_data count:1];
	FOLLOW_8_in_atom574 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_8_in_atom574_data count:1];
	FOLLOW_expr_in_atom576 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_expr_in_atom576_data count:1];
	FOLLOW_10_in_atom578 = [[ANTLRBitSet alloc] initWithBits:FOLLOW_10_in_atom578_data count:1];

}

- (id) initWithTokenStream:(id<ANTLRTokenStream>)aStream
{
	if ((self = [super initWithTokenStream:aStream])) {

		tokenNames = [[NSArray alloc] initWithObjects:@"<invalid>", @"<EOR>", @"<DOWN>", @"<UP>", 
	@"ID", @"INT", @"WS", @"';'", @"'('", @"','", @"')'", @"'int'", @"'char'", 
	@"'void'", @"'{'", @"'}'", @"'for'", @"'='", @"'=='", @"'<'", @"'+'", nil];
		dfa2 = [[SimpleCParserDFA2 alloc] initWithRecognizer:self];
																																
	}
	return self;
}

- (void) dealloc
{
	[tokenNames release];
	[dfa2 release];
	[super dealloc];
}

- (NSString *) grammarFileName
{
	return @"SimpleC.g";
}


// $ANTLR start program
// SimpleC.g:7:1: program : ( declaration )+ ;
- (void) program
{
    // token labels
    // token+rule list labels
    // rule labels
    // rule list labels
    // rule refs in alts with rewrites

    @try {
        // SimpleC.g:8:9: ( ( declaration )+ ) // ruleBlockSingleAlt
        // SimpleC.g:8:9: ( declaration )+ // alt
        {
        // SimpleC.g:8:9: ( declaration )+	// positiveClosureBlock
        int cnt1=0;

        do {
            int alt1=2;
            {
            	int LA1_0 = [input LA:1];
            	if ( LA1_0==SimpleCParser_ID||(LA1_0>=11 && LA1_0<=13) ) {
            		alt1 = 1;
            	}

            }
            switch (alt1) {
        	case 1 :
        	    // SimpleC.g:8:9: declaration // alt
        	    {
        	    [following addObject:FOLLOW_declaration_in_program27];
        	    [self declaration];
        	    [following removeLastObject];



        	    }
        	    break;

        	default :
        	    if ( cnt1 >= 1 )  goto loop1;
        			ANTLREarlyExitException *eee = [ANTLREarlyExitException exceptionWithStream:input decisionNumber:1];
        			@throw eee;
            }
            cnt1++;
        } while (YES); loop1: ;


        }

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

	}
	return ;
}
// $ANTLR end program

// $ANTLR start declaration
// SimpleC.g:11:1: declaration : ( variable | functionHeader ';' | functionHeader block );
- (void) declaration
{
    // token labels
    // token+rule list labels
    // rule labels
    NSString* _functionHeader1 = nil;

    NSString* _functionHeader2 = nil;

    // rule list labels
    // rule refs in alts with rewrites

    @try {
        // SimpleC.g:21:9: ( variable | functionHeader ';' | functionHeader block ) //ruleblock
        int alt2=3;
        alt2 = [dfa2 predict];
        switch (alt2) {
        	case 1 :
        	    // SimpleC.g:21:9: variable // alt
        	    {
        	    [following addObject:FOLLOW_variable_in_declaration49];
        	    [self variable];
        	    [following removeLastObject];



        	    }
        	    break;
        	case 2 :
        	    // SimpleC.g:22:9: functionHeader ';' // alt
        	    {
        	    [following addObject:FOLLOW_functionHeader_in_declaration59];
        	    _functionHeader1 = [self functionHeader];
        	    [following removeLastObject];


        	    [self match:input tokenType:7 follow:FOLLOW_7_in_declaration61]; 
        	    NSLog(@"%@ is a declaration", _functionHeader1);

        	    }
        	    break;
        	case 3 :
        	    // SimpleC.g:24:9: functionHeader block // alt
        	    {
        	    [following addObject:FOLLOW_functionHeader_in_declaration74];
        	    _functionHeader2 = [self functionHeader];
        	    [following removeLastObject];


        	    [following addObject:FOLLOW_block_in_declaration76];
        	    [self block];
        	    [following removeLastObject];


        	    NSLog(@"%@ is a definition", _functionHeader2);

        	    }
        	    break;

        }
    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		// token+rule list labels