| /** \file |
| * This OBJC source file was generated by $ANTLR version 3.4 |
| * |
| * - From the grammar source file : /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g |
| * - On : 2012-02-16 17:34:26 |
| * - for the parser : TParserParser |
| * |
| * Editing it, at least manually, is not wise. |
| * |
| * ObjC language generator and runtime by Alan Condit, acondit|hereisanat|ipns|dotgoeshere|com. |
| * |
| * |
| */ |
| // $ANTLR 3.4 /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g 2012-02-16 17:34:26 |
| |
| |
| /* ----------------------------------------- |
| * Include the ANTLR3 generated header file. |
| */ |
| #import "TParser.h" |
| /* ----------------------------------------- */ |
| |
| /** Demonstrates how semantic predicates get hoisted out of the rule in |
| * which they are found and used in other decisions. This grammar illustrates |
| * how predicates can be used to distinguish between enum as a keyword and |
| * an ID *dynamically*. :) |
| |
| * Run "java org.antlr.Tool -dfa t.g" to generate DOT (graphviz) files. See |
| * the T_dec-1.dot file to see the predicates in action. |
| */ |
| |
| /* ============================================================================= */ |
| /* ============================================================================= |
| * Start of recognizer |
| */ |
| |
| #pragma mark Bitsets |
| static ANTLRBitSet *FOLLOW_identifier_in_stat34; |
| static const unsigned long long FOLLOW_identifier_in_stat34_data[] = { 0x0000000000000002LL}; |
| static ANTLRBitSet *FOLLOW_enumAsKeyword_in_stat47; |
| static const unsigned long long FOLLOW_enumAsKeyword_in_stat47_data[] = { 0x0000000000000002LL}; |
| static ANTLRBitSet *FOLLOW_ID_in_identifier66; |
| static const unsigned long long FOLLOW_ID_in_identifier66_data[] = { 0x0000000000000002LL}; |
| static ANTLRBitSet *FOLLOW_enumAsID_in_identifier74; |
| static const unsigned long long FOLLOW_enumAsID_in_identifier74_data[] = { 0x0000000000000002LL}; |
| static ANTLRBitSet *FOLLOW_7_in_enumAsKeyword89; |
| static const unsigned long long FOLLOW_7_in_enumAsKeyword89_data[] = { 0x0000000000000002LL}; |
| static ANTLRBitSet *FOLLOW_7_in_enumAsID100; |
| static const unsigned long long FOLLOW_7_in_enumAsID100_data[] = { 0x0000000000000002LL}; |
| |
| |
| #pragma mark Dynamic Global globalAttributeScopeImplementation |
| |
| #pragma mark Dynamic Rule Scopes ruleAttributeScopeImplementation |
| |
| #pragma mark Rule Return Scopes returnScopeImplementation |
| |
| @implementation TParser // line 637 |
| |
| /* ObjC start of ruleAttributeScope */ |
| #pragma mark Dynamic Rule Scopes ruleAttributeScope |
| /* ObjC end of ruleAttributeScope */ |
| #pragma mark global Attribute Scopes globalAttributeScope |
| /* ObjC start globalAttributeScope */ |
| /* ObjC end globalAttributeScope */ |
| /* ObjC start actions.(actionScope).synthesize */ |
| /* ObjC start synthesize() */ |
| |
| + (void) initialize |
| { |
| #pragma mark Bitsets |
| FOLLOW_identifier_in_stat34 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_identifier_in_stat34_data Count:(NSUInteger)1] retain]; |
| FOLLOW_enumAsKeyword_in_stat47 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_enumAsKeyword_in_stat47_data Count:(NSUInteger)1] retain]; |
| FOLLOW_ID_in_identifier66 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_ID_in_identifier66_data Count:(NSUInteger)1] retain]; |
| FOLLOW_enumAsID_in_identifier74 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_enumAsID_in_identifier74_data Count:(NSUInteger)1] retain]; |
| FOLLOW_7_in_enumAsKeyword89 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_7_in_enumAsKeyword89_data Count:(NSUInteger)1] retain]; |
| FOLLOW_7_in_enumAsID100 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_7_in_enumAsID100_data Count:(NSUInteger)1] retain]; |
| |
| [BaseRecognizer setTokenNames:[[AMutableArray arrayWithObjects:@"<invalid>", @"<EOR>", @"<DOWN>", @"<UP>", |
| @"ID", @"INT", @"WS", @"'enum'", nil] retain]]; |
| [BaseRecognizer setGrammarFileName:@"/Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g"]; |
| } |
| |
| + (TParser *)newTParser:(id<TokenStream>)aStream |
| { |
| return [[TParser alloc] initWithTokenStream:aStream]; |
| } |
| |
| - (id) initWithTokenStream:(id<TokenStream>)aStream |
| { |
| self = [super initWithTokenStream:aStream State:[[RecognizerSharedState newRecognizerSharedStateWithRuleLen:4+1] retain]]; |
| if ( self != nil ) { |
| /* start of actions-actionScope-init */ |
| |
| enableEnum = NO; |
| |
| /* start of init */ |
| } |
| return self; |
| } |
| |
| - (void) dealloc |
| { |
| [super dealloc]; |
| } |
| |
| /* ObjC start actions.(actionScope).methods */ |
| /* ObjC end actions.(actionScope).methods */ |
| /* ObjC start methods() */ |
| /* ObjC end methods() */ |
| /* ObjC start rules */ |
| /* |
| * $ANTLR start stat |
| * /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:24:1: stat : ( identifier | enumAsKeyword ); |
| */ |
| - (void) stat |
| { |
| /* ruleScopeSetUp */ |
| |
| /* ruleDeclarations */ |
| |
| @try { |
| /* ruleLabelDefs entry */ |
| |
| |
| // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:24:5: ( identifier | enumAsKeyword ) //ruleblock |
| NSInteger alt1=2; |
| NSInteger LA1_0 = [input LA:1]; |
| |
| if ( (LA1_0==ID) ) { |
| alt1=1; |
| } |
| else if ( (LA1_0==7) ) { |
| NSInteger LA1_2 = [input LA:2]; |
| |
| if ( ((!enableEnum)) ) { |
| alt1=1; |
| } |
| else if ( ((enableEnum)) ) { |
| alt1=2; |
| } |
| else { |
| NoViableAltException *nvae = [NoViableAltException newException:1 state:2 stream:input]; |
| nvae.c = LA1_2; |
| @throw nvae; |
| |
| } |
| } |
| else { |
| NoViableAltException *nvae = [NoViableAltException newException:1 state:0 stream:input]; |
| nvae.c = LA1_0; |
| @throw nvae; |
| |
| } |
| switch (alt1) { |
| case 1 : ; |
| // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:24:7: identifier // alt |
| { |
| |
| /* ruleRef */ |
| [self pushFollow:FOLLOW_identifier_in_stat34]; |
| [self identifier]; |
| |
| [self popFollow]; |
| |
| |
| |
| |
| NSLog(@"enum is an ID"); |
| |
| |
| } |
| break; |
| case 2 : ; |
| // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:25:7: enumAsKeyword // alt |
| { |
| |
| /* ruleRef */ |
| [self pushFollow:FOLLOW_enumAsKeyword_in_stat47]; |
| [self enumAsKeyword]; |
| |
| [self popFollow]; |
| |
| |
| |
| |
| NSLog(@"enum is a keyword"); |
| |
| |
| } |
| break; |
| |
| } |
| /* token+rule list labels */ |
| |
| } |
| @catch (RecognitionException *re) { |
| [self reportError:re]; |
| [self recover:input Exception:re]; |
| } |
| |
| @finally { |
| /* ruleScopeCleanUp */ |
| |
| } |
| return ; |
| } |
| /* $ANTLR end stat */ |
| |
| /* |
| * $ANTLR start identifier |
| * /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:28:1: identifier : ( ID | enumAsID ); |
| */ |
| - (void) identifier |
| { |
| /* ruleScopeSetUp */ |
| |
| /* ruleDeclarations */ |
| |
| @try { |
| /* ruleLabelDefs entry */ |
| |
| |
| // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:29:5: ( ID | enumAsID ) //ruleblock |
| NSInteger alt2=2; |
| NSInteger LA2_0 = [input LA:1]; |
| |
| if ( (LA2_0==ID) ) { |
| alt2=1; |
| } |
| else if ( (LA2_0==7) ) { |
| alt2=2; |
| } |
| else { |
| NoViableAltException *nvae = [NoViableAltException newException:2 state:0 stream:input]; |
| nvae.c = LA2_0; |
| @throw nvae; |
| |
| } |
| switch (alt2) { |
| case 1 : ; |
| // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:29:7: ID // alt |
| { |
| |
| [self match:input TokenType:ID Follow:FOLLOW_ID_in_identifier66]; |
| |
| } |
| break; |
| case 2 : ; |
| // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:30:7: enumAsID // alt |
| { |
| |
| /* ruleRef */ |
| [self pushFollow:FOLLOW_enumAsID_in_identifier74]; |
| [self enumAsID]; |
| |
| [self popFollow]; |
| |
| |
| |
| } |
| break; |
| |
| } |
| /* token+rule list labels */ |
| |
| } |
| @catch (RecognitionException *re) { |
| [self reportError:re]; |
| [self recover:input Exception:re]; |
| } |
| |
| @finally { |
| /* ruleScopeCleanUp */ |
| |
| } |
| return ; |
| } |
| /* $ANTLR end identifier */ |
| |
| /* |
| * $ANTLR start enumAsKeyword |
| * /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:33:1: enumAsKeyword :{...}? 'enum' ; |
| */ |
| - (void) enumAsKeyword |
| { |
| /* ruleScopeSetUp */ |
| |
| /* ruleDeclarations */ |
| |
| @try { |
| /* ruleLabelDefs entry */ |
| |
| |
| // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:33:15: ({...}? 'enum' ) // ruleBlockSingleAlt |
| // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:33:17: {...}? 'enum' // alt |
| { |
| |
| if ( !((enableEnum)) ) { |
| @throw [FailedPredicateException newException:@"enumAsKeyword" predicate:@"enableEnum" stream:input]; |
| } |
| |
| [self match:input TokenType:7 Follow:FOLLOW_7_in_enumAsKeyword89]; |
| |
| } |
| |
| /* token+rule list labels */ |
| |
| } |
| @catch (RecognitionException *re) { |
| [self reportError:re]; |
| [self recover:input Exception:re]; |
| } |
| |
| @finally { |
| /* ruleScopeCleanUp */ |
| |
| } |
| return ; |
| } |
| /* $ANTLR end enumAsKeyword */ |
| |
| /* |
| * $ANTLR start enumAsID |
| * /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:35:1: enumAsID :{...}? 'enum' ; |
| */ |
| - (void) enumAsID |
| { |
| /* ruleScopeSetUp */ |
| |
| /* ruleDeclarations */ |
| |
| @try { |
| /* ruleLabelDefs entry */ |
| |
| |
| // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:35:10: ({...}? 'enum' ) // ruleBlockSingleAlt |
| // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:35:12: {...}? 'enum' // alt |
| { |
| |
| if ( !((!enableEnum)) ) { |
| @throw [FailedPredicateException newException:@"enumAsID" predicate:@"!enableEnum" stream:input]; |
| } |
| |
| [self match:input TokenType:7 Follow:FOLLOW_7_in_enumAsID100]; |
| |
| } |
| |
| /* token+rule list labels */ |
| |
| } |
| @catch (RecognitionException *re) { |
| [self reportError:re]; |
| [self recover:input Exception:re]; |
| } |
| |
| @finally { |
| /* ruleScopeCleanUp */ |
| |
| } |
| return ; |
| } |
| /* $ANTLR end enumAsID */ |
| /* ObjC end rules */ |
| |
| @end /* end of TParser implementation line 692 */ |
