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Groovy 1.7.0
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org.codehaus.groovy.antlr.parser
Class GroovyRecognizer

java.lang.Object
  antlr.Parser
      antlr.LLkParser
          org.codehaus.groovy.antlr.parser.GroovyRecognizer
All Implemented Interfaces:
GroovyTokenTypes
class GroovyRecognizer
extends LLkParser

JSR-241 Groovy Recognizer Run 'java Main [-showtree] directory-full-of-groovy-files' [The -showtree option pops up a Swing frame that shows the AST constructed from the parser.] Contributing authors: John Mitchell johnm@non.net Terence Parr parrt@magelang.com John Lilley jlilley@empathy.com Scott Stanchfield thetick@magelang.com Markus Mohnen mohnen@informatik.rwth-aachen.de Peter Williams pete.williams@sun.com Allan Jacobs Allan.Jacobs@eng.sun.com Steve Messick messick@redhills.com James Strachan jstrachan@protique.com John Pybus john@pybus.org John Rose rose00@mac.com Jeremy Rayner groovy@ross-rayner.com Alex Popescu the.mindstorm@gmail.com Martin Kempf mkempf@hsr.ch Reto Kleeb rkleeb@hsr.ch Version 1.00 December 9, 1997 -- initial release Version 1.01 December 10, 1997 fixed bug in octal def (0..7 not 0..8) Version 1.10 August 1998 (parrt) added tree construction fixed definition of WS,comments for mac,pc,unix newlines added unary plus Version 1.11 (Nov 20, 1998) Added "shutup" option to turn off last ambig warning. Fixed inner class def to allow named class defs as statements synchronized requires compound not simple statement add [] after builtInType DOT class in primaryExpression "const" is reserved but not valid..removed from modifiers Version 1.12 (Feb 2, 1999) Changed LITERAL_xxx to xxx in tree grammar. Updated java.g to use tokens {...} now for 2.6.0 (new feature). Version 1.13 (Apr 23, 1999) Didn't have (stat)? for else clause in tree parser. Didn't gen ASTs for interface extends. Updated tree parser too. Updated to 2.6.0. Version 1.14 (Jun 20, 1999) Allowed final/abstract on local classes. Removed local interfaces from methods Put instanceof precedence where it belongs...in relationalExpr It also had expr not type as arg; fixed it. Missing ! on SEMI in classBlock fixed: (expr) + "string" was parsed incorrectly (+ as unary plus). fixed: didn't like Object[].class in parser or tree parser Version 1.15 (Jun 26, 1999) Screwed up rule with instanceof in it. :( Fixed. Tree parser didn't like (expr).something; fixed. Allowed multiple inheritance in tree grammar. oops. Version 1.16 (August 22, 1999) Extending an interface built a wacky tree: had extra EXTENDS. Tree grammar didn't allow multiple superinterfaces. Tree grammar didn't allow empty var initializer: {} Version 1.17 (October 12, 1999) ESC lexer rule allowed 399 max not 377 max. java.tree.g didn't handle the expression of synchronized statements. Version 1.18 (August 12, 2001) Terence updated to Java 2 Version 1.3 by observing/combining work of Allan Jacobs and Steve Messick. Handles 1.3 src. Summary: o primary didn't include boolean.class kind of thing o constructor calls parsed explicitly now: see explicitConstructorInvocation o add strictfp modifier o missing objBlock after new expression in tree grammar o merged local class definition alternatives, moved after declaration o fixed problem with ClassName.super.field o reordered some alternatives to make things more efficient o long and double constants were not differentiated from int/float o whitespace rule was inefficient: matched only one char o add an examples directory with some nasty 1.3 cases o made Main.java use buffered IO and a Reader for Unicode support o supports UNICODE? Using Unicode charVocabulay makes code file big, but only in the bitsets at the end. I need to make ANTLR generate unicode bitsets more efficiently. Version 1.19 (April 25, 2002) Terence added in nice fixes by John Pybus concerning floating constants and problems with super() calls. John did a nice reorg of the primary/postfix expression stuff to read better and makes f.g.super() parse properly (it was METHOD_CALL not a SUPER_CTOR_CALL). Also: o "finally" clause was a root...made it a child of "try" o Added stuff for asserts too for Java 1.4, but *commented out* as it is not backward compatible. Version 1.20 (October 27, 2002) Terence ended up reorging John Pybus' stuff to remove some nondeterminisms and some syntactic predicates. Note that the grammar is stricter now; e.g., this(...) must be the first statement. Trinary ?: operator wasn't working as array name: (isBig ? bigDigits : digits)[i]; Checked parser/tree parser on source for Resin-2.0.5, jive-2.1.1, jdk 1.3.1, Lucene, antlr 2.7.2a4, and the 110k-line jGuru server source. Version 1.21 (October 17, 2003) Fixed lots of problems including: Ray Waldin: add typeDefinition to interfaceBlock in java.tree.g He found a problem/fix with floating point that start with 0 Ray also fixed problem that (int.class) was not recognized. Thorsten van Ellen noticed that \n are allowed incorrectly in strings. TJP fixed CHAR_LITERAL analogously. Version 1.21.2 (March, 2003) Changes by Matt Quail to support generics (as per JDK1.5/JSR14) Notes: o We only allow the "extends" keyword and not the "implements" keyword, since thats what JSR14 seems to imply. o Thanks to Monty Zukowski for his help on the antlr-interest mail list. o Thanks to Alan Eliasen for testing the grammar over his Fink source base Version 1.22 (July, 2004) Changes by Michael Studman to support Java 1.5 language extensions Notes: o Added support for annotations types o Finished off Matt Quail's generics enhancements to support bound type arguments o Added support for new for statement syntax o Added support for static import syntax o Added support for enum types o Tested against JDK 1.5 source base and source base of jdigraph project o Thanks to Matt Quail for doing the hard part by doing most of the generics work Version 1.22.1 (July 28, 2004) Bug/omission fixes for Java 1.5 language support o Fixed tree structure bug with classOrInterface - thanks to Pieter Vangorpto for spotting this o Fixed bug where incorrect handling of SR and BSR tokens would cause type parameters to be recognised as type arguments. o Enabled type parameters on constructors, annotations on enum constants and package definitions o Fixed problems when parsing if ((char.class.equals(c))) {} - solution by Matt Quail at Cenqua Version 1.22.2 (July 28, 2004) Slight refactoring of Java 1.5 language support o Refactored for/"foreach" productions so that original literal "for" literal is still used but the for sub-clauses vary by token type o Fixed bug where type parameter was not included in generic constructor's branch of AST Version 1.22.3 (August 26, 2004) Bug fixes as identified by Michael Stahl; clean up of tabs/spaces and other refactorings o Fixed typeParameters omission in identPrimary and newStatement o Replaced GT reconcilliation code with simple semantic predicate o Adapted enum/assert keyword checking support from Michael Stahl's java15 grammar o Refactored typeDefinition production and field productions to reduce duplication Version 1.22.4 (October 21, 2004) Small bux fixes o Added typeArguments to explicitConstructorInvocation, e.g. new MyParameterised() o Added typeArguments to postfixExpression productions for anonymous inner class super constructor invocation, e.g. new Outer().super() o Fixed bug in array declarations identified by Geoff Roy Version 1.22.4.g.1 o I have taken java.g for Java1.5 from Michael Studman (1.22.4) and have applied the groovy.diff from java.g (1.22) by John Rose back onto the new root (1.22.4) - Jeremy Rayner (Jan 2005) o for a map of the task see... http://groovy.javanicus.com/java-g.png Version 1.22.4.g.2 o mkempf, rkleeb, Dec 2007 o fixed various rules so that they call the correct Create Method to make sure that the line information are correct This grammar is in the PUBLIC DOMAIN

Field Summary
static String[] _tokenNames

static BitSet _tokenSet_0

static BitSet _tokenSet_1

static BitSet _tokenSet_10

static BitSet _tokenSet_11

static BitSet _tokenSet_12

static BitSet _tokenSet_13

static BitSet _tokenSet_14

static BitSet _tokenSet_15

static BitSet _tokenSet_16

static BitSet _tokenSet_17

static BitSet _tokenSet_18

static BitSet _tokenSet_19

static BitSet _tokenSet_2

static BitSet _tokenSet_20

static BitSet _tokenSet_21

static BitSet _tokenSet_22

static BitSet _tokenSet_23

static BitSet _tokenSet_24

static BitSet _tokenSet_25

static BitSet _tokenSet_26

static BitSet _tokenSet_27

static BitSet _tokenSet_28

static BitSet _tokenSet_29

static BitSet _tokenSet_3

static BitSet _tokenSet_30

static BitSet _tokenSet_31

static BitSet _tokenSet_32

static BitSet _tokenSet_33

static BitSet _tokenSet_34

static BitSet _tokenSet_35

static BitSet _tokenSet_36

static BitSet _tokenSet_37

static BitSet _tokenSet_38

static BitSet _tokenSet_39

static BitSet _tokenSet_4

static BitSet _tokenSet_40

static BitSet _tokenSet_41

static BitSet _tokenSet_42

static BitSet _tokenSet_43

static BitSet _tokenSet_44

static BitSet _tokenSet_45

static BitSet _tokenSet_46

static BitSet _tokenSet_47

static BitSet _tokenSet_48

static BitSet _tokenSet_49

static BitSet _tokenSet_5

static BitSet _tokenSet_50

static BitSet _tokenSet_51

static BitSet _tokenSet_52

static BitSet _tokenSet_53

static BitSet _tokenSet_54

static BitSet _tokenSet_55

static BitSet _tokenSet_56

static BitSet _tokenSet_57

static BitSet _tokenSet_58

static BitSet _tokenSet_59

static BitSet _tokenSet_6

static BitSet _tokenSet_60

static BitSet _tokenSet_61

static BitSet _tokenSet_62

static BitSet _tokenSet_63

static BitSet _tokenSet_64

static BitSet _tokenSet_65

static BitSet _tokenSet_66

static BitSet _tokenSet_67

static BitSet _tokenSet_68

static BitSet _tokenSet_69

static BitSet _tokenSet_7

static BitSet _tokenSet_70

static BitSet _tokenSet_71

static BitSet _tokenSet_72

static BitSet _tokenSet_73

static BitSet _tokenSet_74

static BitSet _tokenSet_75

static BitSet _tokenSet_76

static BitSet _tokenSet_77

static BitSet _tokenSet_78

static BitSet _tokenSet_79

static BitSet _tokenSet_8

static BitSet _tokenSet_80

static BitSet _tokenSet_81

static BitSet _tokenSet_82

static BitSet _tokenSet_83

static BitSet _tokenSet_84

static BitSet _tokenSet_85

static BitSet _tokenSet_86

static BitSet _tokenSet_87

static BitSet _tokenSet_88

static BitSet _tokenSet_89

static BitSet _tokenSet_9

static BitSet _tokenSet_90

static BitSet _tokenSet_91

static BitSet _tokenSet_92

static BitSet _tokenSet_93

static BitSet _tokenSet_94

static BitSet _tokenSet_95

static BitSet _tokenSet_96

static BitSet _tokenSet_97

static BitSet _tokenSet_98

GroovyLexer lexer

static boolean tracing

List warningList

 
Constructor Summary
protected GroovyRecognizer(TokenBuffer tokenBuf, int k)

GroovyRecognizer(TokenBuffer tokenBuf)

protected GroovyRecognizer(TokenStream lexer, int k)

GroovyRecognizer(TokenStream lexer)

GroovyRecognizer(ParserSharedInputState state)

 
Method Summary
void aCase()

void addWarning(String warning, String solution)

void additiveExpression(int lc_stmt)

void andExpression(int lc_stmt)

void annotation()

void annotationArguments()

void annotationBlock()

void annotationDefinition(AST modifiers)

void annotationField()

void annotationIdent()

void annotationMemberArrayValueInitializer()

void annotationMemberValueInitializer()

void annotationMemberValuePair()

void annotationMemberValuePairs()

void annotationsInternal()

void annotationsOpt()

void appendedBlock(AST callee)

An appended block follows any expression.

void argList()

byte argument()

A single argument in (...) or [...].

void argumentLabel()

A label for an argument is of the form a:b, 'a':b, "a":b, (a):b, etc..

void argumentLabelStart()

For lookahead only.

void assignmentExpression(int lc_stmt)

void assignmentLessExpression()

void balancedBrackets()

Fast lookahead across balanced brackets of all sorts.

void balancedTokens()

void blockBody(int prevToken)

A block body is a parade of zero or more statements or expressions.

void branchStatement()

In Groovy, return, break, continue, throw, and assert can be used in a parenthesized expression context.

protected void buildTokenTypeASTClassMap()

void builtInType()

void builtInTypeArraySpec(boolean addImagNode)

void builtInTypeSpec(boolean addImagNode)

void caseSList()

void casesGroup()

void checkSuspiciousExpressionStatement(int prevToken)

If two statements are separated by newline (not SEMI), the second had better not look like the latter half of an expression.

void classBlock()

void classDefinition(AST modifiers)

void classField()

void classOrInterfaceType(boolean addImagNode)

void classTypeSpec(boolean addImagNode)

Token cloneToken(Token t)

Clones the token

void closableBlock()

A block which is known to be a closure, even if it has no apparent arguments.

void closableBlockConstructorExpression()

void closableBlockParam()

Simple names, as in {x|...}, are completely equivalent to {(def x)|...}.

void closableBlockParamsOpt(boolean addImplicit)

Closure parameters are exactly like method parameters, except that they are not enclosed in parentheses, but rather are prepended to the front of a block, just after the brace.

void closableBlockParamsStart()

Lookahead to check whether a block begins with explicit closure arguments.

void closureList()

void commandArgument()

void commandArguments(AST head)

A member name (x.y) or element name (x[y]) can serve as a command name, which may be followed by a list of arguments.

void compatibleBodyStatement()

In Java, "if", "while", and "for" statements can take random, non-braced statements as their bodies.

void compilationUnit()

void compoundStatement()

void conditionalExpression(int lc_stmt)

void constant()

Numeric, string, regexp, boolean, or null constant.

void constantNumber()

Numeric constant.

void constructorBody()

void constructorDefinition(AST mods)

I've split out constructors separately; we could maybe integrate back into variableDefinitions later on if we maybe simplified 'def' to be a type declaration?

void constructorStart()

Used to look ahead for a constructor

void controlExpressionList()

AST create(int type, String txt, AST first)

Create an AST node with the token type and text passed in, but with the same background information as another supplied Token (e.g.
AST create(int type, String txt, Token first, Token last)

AST create(int type, String txt, AST first, Token last)

AST create(int type, String txt, AST first, AST last)

void declaration()

A declaration is the creation of a reference or primitive-type variable, or (if arguments are present) of a method.

void declarationStart()

Used only as a lookahead predicate, before diving in and parsing a declaration.

void declaratorBrackets(AST typ)

After some type names, where zero or more empty bracket pairs are allowed.

void dynamicMemberName()

If a dot is followed by a parenthesized or quoted expression, the member is computed dynamically, and the member selection is done only at runtime.

void enumBlock()

void enumConstant()

void enumConstantBlock()

void enumConstantField()

void enumConstants()

Comma-separated list of one or more enum constant definitions.

void enumConstantsStart()

Guard for enumConstants.

void enumDefinition(AST modifiers)

void equalityExpression(int lc_stmt)

void exclusiveOrExpression(int lc_stmt)

void explicitConstructorInvocation()

Catch obvious constructor calls, but not the expr.super(...) calls

void expression(int lc_stmt)

void expressionStatement(int prevToken)

An expression statement can be any general expression.

void finallyClause()

void forCond()

void forInClause()

void forInit()

void forIter()

void forStatement()

void genericMethod()

void genericMethodStart()

lookahead predicate for usage of generics in methods as parameter for the method.

GroovyLexer getLexer()

List getWarningList()

void handler()

void identifier()

void identifierStar()

void implementsClause()

void implicitParameters()

A block known to be a closure, but which omits its arguments, is given this placeholder.

void importStatement()

void inclusiveOrExpression(int lc_stmt)

void indexPropertyArgs(AST indexee)

An expression may be followed by [...].

void interfaceBlock()

void interfaceDefinition(AST modifiers)

void interfaceExtends()

void interfaceField()

void keywordPropertyNames()

Allowed keywords after dot (as a member name) and before colon (as a label).

void listOfVariables(AST mods, AST t, Token first)

void listOrMapConstructorExpression()

A list constructor is a argument list enclosed in square brackets, without labels.

void logicalAndExpression(int lc_stmt)

void logicalOrExpression(int lc_stmt)

static GroovyRecognizer make(GroovyLexer lexer)

This factory is the correct way to wire together a Groovy parser and lexer.

static GroovyRecognizer make(InputStream in)

static GroovyRecognizer make(Reader in)

static GroovyRecognizer make(InputBuffer in)

static GroovyRecognizer make(LexerSharedInputState in)

void matchGenericTypeBracketsFailed(String problem, String solution)

void methodCallArgs(AST callee)

An expression may be followed by one or both of (...) and {...}.

void modifier()

void modifiers()

A list of one or more modifier, annotation, or "def".

void modifiersInternal()

void modifiersOpt()

A list of zero or more modifiers, annotations, or "def".

void multipleAssignment(int lc_stmt)

void multipleAssignmentDeclaration()

void multipleAssignmentDeclarationStart()

void multiplicativeExpression(int lc_stmt)

void namePart()

This is the grammar for what can follow a dot: x.a, x.
void newArrayDeclarator()

void newExpression()

object instantiation.

void nls()

Zero or more insignificant newlines, all gobbled up and thrown away.

void nlsWarn()

Zero or more insignificant newlines, all gobbled up and thrown away, but a warning message is left for the user, if there was a newline.

void openBlock()

An open block is not allowed to have closure arguments.

void openOrClosableBlock()

A sub-block of a block can be either open or closable.

void packageDefinition()

void parameterDeclaration()

A formal parameter for a method or closure.

void parameterDeclarationList()

A list of zero or more formal parameters.

void parameterModifiersOpt()

void parenthesizedExpression()

void pathElement(AST prefix)

void pathElementStart()

void pathExpression(int lc_stmt)

A "path expression" is a name or other primary, possibly qualified by various forms of dot, and/or followed by various kinds of brackets.

void postfixExpression(int lc_stmt)

void powerExpression(int lc_stmt)

void powerExpressionNotPlusMinus(int lc_stmt)

void primaryExpression()

void qualifiedTypeName()

void regexExpression(int lc_stmt)

void relationalExpression(int lc_stmt)

void requireFailed(String problem, String solution)

void sep()

A statement separator is either a semicolon or a significant newline.

void setFilename(String f)

void setSourceBuffer(SourceBuffer sourceBuffer)

void shiftExpression(int lc_stmt)

void singleDeclaration()

A declaration with one declarator and optional initialization, like a parameterDeclaration.

void singleDeclarationNoInit()

A declaration with one declarator and no initialization, like a parameterDeclaration.

void singleVariable(AST mods, AST t)

Used in cases where a declaration cannot have commas, or ends with the "in" operator instead of '='.

void snippetUnit()

A Groovy script or simple expression.

void statement(int prevToken)

A statement is an element of a block.

void statementLabelPrefix()

A labeled statement, consisting of a vanilla identifier followed by a colon.

boolean strictContextExpression(boolean allowDeclaration)

Things that can show up as expressions, but only in strict contexts like inside parentheses, argument lists, and list constructors.

void stringConstructorExpression()

void stringConstructorValuePart()

void superClassClause()

void suspiciousExpressionStatementStart()

Lookahead for suspicious statement warnings and errors.

void throwsClause()

void traceIn(String rname)

void traceOut(String rname)

void tryBlock()

void type()

void typeArgument()

void typeArgumentBounds()

void typeArgumentSpec()

void typeArguments()

protected void typeArgumentsOrParametersEnd()

void typeDeclarationStart()

Used only as a lookahead predicate for nested type declarations.

protected void typeDefinitionInternal(AST mods)

void typeNamePairs(AST mods, Token first)

void typeParameter()

void typeParameterBounds()

void typeParameters()

void typeSpec(boolean addImagNode)

void unaryExpression(int lc_stmt)

void unaryExpressionNotPlusMinus(int lc_stmt)

void upperCaseIdent()

An IDENT token whose spelling is required to start with an uppercase letter.

void varInitializer()

An assignment operator '=' followed by an expression.

void variableDeclarator(AST mods, AST t, Token first)

Declaration of a variable.

void variableDefinitions(AST mods, AST t)

The tail of a declaration.

void variableName()

void wildcardType()

 
Methods inherited from class LLkParser
consume, LA, traceIn, traceOut, LT, mark, rewind, match, match, reportError, reportError, getAST, getTokenNames, consumeUntil, consumeUntil, getFilename, getInputState, setInputState, matchNot, panic, reportWarning, setFilename, traceIndent, setASTNodeClass, getTokenTypeToASTClassMap, recover, getASTFactory, setTokenBuffer, addMessageListener, addParserListener, addParserMatchListener, addParserTokenListener, addSemanticPredicateListener, addSyntacticPredicateListener, addTraceListener, getTokenName, isDebugMode, removeMessageListener, removeParserListener, removeParserMatchListener, removeParserTokenListener, removeSemanticPredicateListener, removeSyntacticPredicateListener, removeTraceListener, setASTFactory, setASTNodeType, setDebugMode, setIgnoreInvalidDebugCalls, wait, wait, wait, hashCode, getClass, equals, toString, notify, notifyAll
 
Methods inherited from class Parser
mark, rewind, match, match, reportError, reportError, getAST, consume, getTokenNames, consumeUntil, consumeUntil, getFilename, getInputState, setInputState, LA, matchNot, panic, reportWarning, setFilename, traceIndent, traceIn, traceOut, LT, setASTNodeClass, getTokenTypeToASTClassMap, recover, getASTFactory, setTokenBuffer, addMessageListener, addParserListener, addParserMatchListener, addParserTokenListener, addSemanticPredicateListener, addSyntacticPredicateListener, addTraceListener, getTokenName, isDebugMode, removeMessageListener, removeParserListener, removeParserMatchListener, removeParserTokenListener, removeSemanticPredicateListener, removeSyntacticPredicateListener, removeTraceListener, setASTFactory, setASTNodeType, setDebugMode, setIgnoreInvalidDebugCalls, wait, wait, wait, hashCode, getClass, equals, toString, notify, notifyAll
 
Methods inherited from class Object
wait, wait, wait, hashCode, getClass, equals, toString, notify, notifyAll
 

Field Detail

_tokenNames

static final String[] _tokenNames

_tokenSet_0

static final BitSet _tokenSet_0

_tokenSet_1

static final BitSet _tokenSet_1

_tokenSet_10

static final BitSet _tokenSet_10

_tokenSet_11

static final BitSet _tokenSet_11

_tokenSet_12

static final BitSet _tokenSet_12

_tokenSet_13

static final BitSet _tokenSet_13

_tokenSet_14

static final BitSet _tokenSet_14

_tokenSet_15

static final BitSet _tokenSet_15

_tokenSet_16

static final BitSet _tokenSet_16

_tokenSet_17

static final BitSet _tokenSet_17

_tokenSet_18

static final BitSet _tokenSet_18

_tokenSet_19

static final BitSet _tokenSet_19

_tokenSet_2

static final BitSet _tokenSet_2

_tokenSet_20

static final BitSet _tokenSet_20

_tokenSet_21

static final BitSet _tokenSet_21

_tokenSet_22

static final BitSet _tokenSet_22

_tokenSet_23

static final BitSet _tokenSet_23

_tokenSet_24

static final BitSet _tokenSet_24

_tokenSet_25

static final BitSet _tokenSet_25

_tokenSet_26

static final BitSet _tokenSet_26

_tokenSet_27

static final BitSet _tokenSet_27

_tokenSet_28

static final BitSet _tokenSet_28

_tokenSet_29

static final BitSet _tokenSet_29

_tokenSet_3

static final BitSet _tokenSet_3

_tokenSet_30

static final BitSet _tokenSet_30

_tokenSet_31

static final BitSet _tokenSet_31

_tokenSet_32

static final BitSet _tokenSet_32

_tokenSet_33

static final BitSet _tokenSet_33

_tokenSet_34

static final BitSet _tokenSet_34

_tokenSet_35

static final BitSet _tokenSet_35

_tokenSet_36

static final BitSet _tokenSet_36

_tokenSet_37

static final BitSet _tokenSet_37

_tokenSet_38

static final BitSet _tokenSet_38

_tokenSet_39

static final BitSet _tokenSet_39

_tokenSet_4

static final BitSet _tokenSet_4

_tokenSet_40

static final BitSet _tokenSet_40

_tokenSet_41

static final BitSet _tokenSet_41

_tokenSet_42

static final BitSet _tokenSet_42

_tokenSet_43

static final BitSet _tokenSet_43

_tokenSet_44

static final BitSet _tokenSet_44

_tokenSet_45

static final BitSet _tokenSet_45

_tokenSet_46

static final BitSet _tokenSet_46

_tokenSet_47

static final BitSet _tokenSet_47

_tokenSet_48

static final BitSet _tokenSet_48

_tokenSet_49

static final BitSet _tokenSet_49

_tokenSet_5

static final BitSet _tokenSet_5

_tokenSet_50

static final BitSet _tokenSet_50

_tokenSet_51

static final BitSet _tokenSet_51

_tokenSet_52

static final BitSet _tokenSet_52

_tokenSet_53

static final BitSet _tokenSet_53

_tokenSet_54

static final BitSet _tokenSet_54

_tokenSet_55

static final BitSet _tokenSet_55

_tokenSet_56

static final BitSet _tokenSet_56

_tokenSet_57

static final BitSet _tokenSet_57

_tokenSet_58

static final BitSet _tokenSet_58

_tokenSet_59

static final BitSet _tokenSet_59

_tokenSet_6

static final BitSet _tokenSet_6

_tokenSet_60

static final BitSet _tokenSet_60

_tokenSet_61

static final BitSet _tokenSet_61

_tokenSet_62

static final BitSet _tokenSet_62

_tokenSet_63

static final BitSet _tokenSet_63

_tokenSet_64

static final BitSet _tokenSet_64

_tokenSet_65

static final BitSet _tokenSet_65

_tokenSet_66

static final BitSet _tokenSet_66

_tokenSet_67

static final BitSet _tokenSet_67

_tokenSet_68

static final BitSet _tokenSet_68

_tokenSet_69

static final BitSet _tokenSet_69

_tokenSet_7

static final BitSet _tokenSet_7

_tokenSet_70

static final BitSet _tokenSet_70

_tokenSet_71

static final BitSet _tokenSet_71

_tokenSet_72

static final BitSet _tokenSet_72

_tokenSet_73

static final BitSet _tokenSet_73

_tokenSet_74

static final BitSet _tokenSet_74

_tokenSet_75

static final BitSet _tokenSet_75

_tokenSet_76

static final BitSet _tokenSet_76

_tokenSet_77

static final BitSet _tokenSet_77

_tokenSet_78

static final BitSet _tokenSet_78

_tokenSet_79

static final BitSet _tokenSet_79

_tokenSet_8

static final BitSet _tokenSet_8

_tokenSet_80

static final BitSet _tokenSet_80

_tokenSet_81

static final BitSet _tokenSet_81

_tokenSet_82

static final BitSet _tokenSet_82

_tokenSet_83

static final BitSet _tokenSet_83

_tokenSet_84

static final BitSet _tokenSet_84

_tokenSet_85

static final BitSet _tokenSet_85

_tokenSet_86

static final BitSet _tokenSet_86

_tokenSet_87

static final BitSet _tokenSet_87

_tokenSet_88

static final BitSet _tokenSet_88

_tokenSet_89

static final BitSet _tokenSet_89

_tokenSet_9

static final BitSet _tokenSet_9

_tokenSet_90

static final BitSet _tokenSet_90

_tokenSet_91

static final BitSet _tokenSet_91

_tokenSet_92

static final BitSet _tokenSet_92

_tokenSet_93

static final BitSet _tokenSet_93

_tokenSet_94

static final BitSet _tokenSet_94

_tokenSet_95

static final BitSet _tokenSet_95

_tokenSet_96

static final BitSet _tokenSet_96

_tokenSet_97

static final BitSet _tokenSet_97

_tokenSet_98

static final BitSet _tokenSet_98

lexer

GroovyLexer lexer

tracing

static boolean tracing

warningList

List warningList

 
Constructor Detail

GroovyRecognizer

protected GroovyRecognizer(TokenBuffer tokenBuf, int k)

GroovyRecognizer

public GroovyRecognizer(TokenBuffer tokenBuf)

GroovyRecognizer

protected GroovyRecognizer(TokenStream lexer, int k)

GroovyRecognizer

public GroovyRecognizer(TokenStream lexer)

GroovyRecognizer

public GroovyRecognizer(ParserSharedInputState state)

 
Method Detail

aCase

public final void aCase()

addWarning

public void addWarning(String warning, String solution)

additiveExpression

public final void additiveExpression(int lc_stmt)

andExpression

public final void andExpression(int lc_stmt)

annotation

public final void annotation()

annotationArguments

public final void annotationArguments()

annotationBlock

public final void annotationBlock()

annotationDefinition

public final void annotationDefinition(AST modifiers)

annotationField

public final void annotationField()

annotationIdent

public final void annotationIdent()

annotationMemberArrayValueInitializer

public final void annotationMemberArrayValueInitializer()

annotationMemberValueInitializer

public final void annotationMemberValueInitializer()

annotationMemberValuePair

public final void annotationMemberValuePair()

annotationMemberValuePairs

public final void annotationMemberValuePairs()

annotationsInternal

public final void annotationsInternal()

annotationsOpt

public final void annotationsOpt()

appendedBlock

public final void appendedBlock(AST callee)
An appended block follows any expression. If the expression is not a method call, it is given an empty argument list.

argList

public final void argList()

argument

public final byte argument()
A single argument in (...) or [...]. Corresponds to to a method or closure parameter. May be labeled. May be modified by the spread operator '*' ('*:' for keywords).

argumentLabel

public final void argumentLabel()
A label for an argument is of the form a:b, 'a':b, "a":b, (a):b, etc.. The labels in (a:b), ('a':b), and ("a":b) are in all ways equivalent, except that the quotes allow more spellings. Equivalent dynamically computed labels are (('a'):b) and ("${'a'}":b) but not ((a):b) or "$a":b, since the latter cases evaluate (a) as a normal identifier. Bottom line: If you want a truly variable label, use parens and say ((a):b).

argumentLabelStart

public final void argumentLabelStart()
For lookahead only. Fast approximate parse of an argumentLabel followed by a colon.

assignmentExpression

public final void assignmentExpression(int lc_stmt)

assignmentLessExpression

public final void assignmentLessExpression()

balancedBrackets

public final void balancedBrackets()
Fast lookahead across balanced brackets of all sorts.

balancedTokens

public final void balancedTokens()

blockBody

public final void blockBody(int prevToken)
A block body is a parade of zero or more statements or expressions.

branchStatement

public final void branchStatement()
In Groovy, return, break, continue, throw, and assert can be used in a parenthesized expression context. Example: println (x || (return)); println assert x, "won't print a false value!" If an optional expression is missing, its value is void (this coerces to null when a value is required).

buildTokenTypeASTClassMap

protected void buildTokenTypeASTClassMap()

builtInType

public final void builtInType()

builtInTypeArraySpec

public final void builtInTypeArraySpec(boolean addImagNode)

builtInTypeSpec

public final void builtInTypeSpec(boolean addImagNode)

caseSList

public final void caseSList()

casesGroup

public final void casesGroup()

checkSuspiciousExpressionStatement

public final void checkSuspiciousExpressionStatement(int prevToken)
If two statements are separated by newline (not SEMI), the second had better not look like the latter half of an expression. If it does, issue a warning.

Also, if the expression starts with a closure, it needs to have an explicit parameter list, in order to avoid the appearance of a compound statement. This is a hard error.

These rules are different from Java's "dumb expression" restriction. Unlike Java, Groovy blocks can end with arbitrary (even dumb) expressions, as a consequence of optional 'return' and 'continue' tokens.

To make the programmer's intention clear, a leading closure must have an explicit parameter list, and must not follow a previous statement separated only by newlines.

classBlock

public final void classBlock()

classDefinition

public final void classDefinition(AST modifiers)

classField

public final void classField()

classOrInterfaceType

public final void classOrInterfaceType(boolean addImagNode)

classTypeSpec

public final void classTypeSpec(boolean addImagNode)

cloneToken

public Token cloneToken(Token t)
Clones the token

closableBlock

public final void closableBlock()
A block which is known to be a closure, even if it has no apparent arguments. A block inside an expression or after a method call is always assumed to be a closure. Only labeled, unparameterized blocks which occur directly as substatements are kept open.

closableBlockConstructorExpression

public final void closableBlockConstructorExpression()

closableBlockParam

public final void closableBlockParam()
Simple names, as in {x|...}, are completely equivalent to {(def x)|...}. Build the right AST.

closableBlockParamsOpt

public final void closableBlockParamsOpt(boolean addImplicit)
Closure parameters are exactly like method parameters, except that they are not enclosed in parentheses, but rather are prepended to the front of a block, just after the brace. They are separated from the closure body by a CLOSABLE_BLOCK_OP token '->'.

closableBlockParamsStart

public final void closableBlockParamsStart()
Lookahead to check whether a block begins with explicit closure arguments.

closureList

public final void closureList()

commandArgument

public final void commandArgument()

commandArguments

public final void commandArguments(AST head)
A member name (x.y) or element name (x[y]) can serve as a command name, which may be followed by a list of arguments. Unlike parenthesized arguments, these must be plain expressions, without labels or spread operators.

compatibleBodyStatement

public final void compatibleBodyStatement()
In Java, "if", "while", and "for" statements can take random, non-braced statements as their bodies. Support this practice, even though it isn't very Groovy.

compilationUnit

public final void compilationUnit()

compoundStatement

public final void compoundStatement()

conditionalExpression

public final void conditionalExpression(int lc_stmt)

constant

public final void constant()
Numeric, string, regexp, boolean, or null constant.

constantNumber

public final void constantNumber()
Numeric constant.

constructorBody

public final void constructorBody()

constructorDefinition

public final void constructorDefinition(AST mods)
I've split out constructors separately; we could maybe integrate back into variableDefinitions later on if we maybe simplified 'def' to be a type declaration?

constructorStart

public final void constructorStart()
Used to look ahead for a constructor

controlExpressionList

public final void controlExpressionList()

create

public AST create(int type, String txt, AST first)
Create an AST node with the token type and text passed in, but with the same background information as another supplied Token (e.g. line numbers). To be used in place of antlr tree construction syntax, i.e. #[TOKEN,"text"] becomes create(TOKEN,"text",anotherToken) todo - change antlr.ASTFactory to do this instead...

create

public AST create(int type, String txt, Token first, Token last)

create

public AST create(int type, String txt, AST first, Token last)

create

public AST create(int type, String txt, AST first, AST last)

declaration

public final void declaration()
A declaration is the creation of a reference or primitive-type variable, or (if arguments are present) of a method. Generically, this is called a 'variable' definition, even in the case of a class field or method. It may start with the modifiers and/or a declaration keyword "def". It may also start with the modifiers and a capitalized type name.

AST effect: Create a separate Type/Var tree for each var in the var list. Must be guarded, as in (declarationStart) => declaration.

declarationStart

public final void declarationStart()
Used only as a lookahead predicate, before diving in and parsing a declaration. A declaration can be unambiguously introduced with "def", an annotation or a modifier token like "final". It may also be introduced by a simple identifier whose first character is an uppercase letter, as in {String x}. A declaration can also be introduced with a built in type like 'int' or 'void'. Brackets (array and generic) are allowed, as in {List[] x} or {int[][] y}. Anything else is parsed as a statement of some sort (expression or command).

(In the absence of explicit method-call parens, we assume a capitalized name is a type name. Yes, this is a little hacky. Alternatives are to complicate the declaration or command syntaxes, or to have the parser query the symbol table. Parse-time queries are evil. And we want both {String x} and {println x}. So we need a syntactic razor-edge to slip between 'println' and 'String'.) *TODO* The declarationStart production needs to be strengthened to recognize things like {List foo}. Right now it only knows how to skip square brackets after the type, not angle brackets. This probably turns out to be tricky because of >> vs. > >. If so, just put a TODO comment in.

declaratorBrackets

public final void declaratorBrackets(AST typ)
After some type names, where zero or more empty bracket pairs are allowed. We use ARRAY_DECLARATOR to represent this. TODO: Is there some more Groovy way to view this in terms of the indexed property syntax?

dynamicMemberName

public final void dynamicMemberName()
If a dot is followed by a parenthesized or quoted expression, the member is computed dynamically, and the member selection is done only at runtime. This forces a statically unchecked member access.

enumBlock

public final void enumBlock()

enumConstant

public final void enumConstant()

enumConstantBlock

public final void enumConstantBlock()

enumConstantField

public final void enumConstantField()

enumConstants

public final void enumConstants()
Comma-separated list of one or more enum constant definitions.

enumConstantsStart

public final void enumConstantsStart()
Guard for enumConstants.

enumDefinition

public final void enumDefinition(AST modifiers)

equalityExpression

public final void equalityExpression(int lc_stmt)

exclusiveOrExpression

public final void exclusiveOrExpression(int lc_stmt)

explicitConstructorInvocation

public final void explicitConstructorInvocation()
Catch obvious constructor calls, but not the expr.super(...) calls

expression

public final void expression(int lc_stmt)

expressionStatement

public final void expressionStatement(int prevToken)
An expression statement can be any general expression.

An expression statement can also be a command, which is a simple method call in which the outermost parentheses are omitted.

Certain "suspicious" looking forms are flagged for the user to disambiguate.

finallyClause

public final void finallyClause()

forCond

public final void forCond()

forInClause

public final void forInClause()

forInit

public final void forInit()

forIter

public final void forIter()

forStatement

public final void forStatement()

genericMethod

public final void genericMethod()

genericMethodStart

public final void genericMethodStart()
lookahead predicate for usage of generics in methods as parameter for the method. Example: static T foo(){} must be first after the modifier. This rule allows more and does no exact match, but it is only a lookahead, not the real rule.

getLexer

public GroovyLexer getLexer()

getWarningList

public List getWarningList()

handler

public final void handler()

identifier

public final void identifier()

identifierStar

public final void identifierStar()

implementsClause

public final void implementsClause()

implicitParameters

public final void implicitParameters()
A block known to be a closure, but which omits its arguments, is given this placeholder. A subsequent pass is responsible for deciding if there is an implicit 'it' parameter, or if the parameter list should be empty.

importStatement

public final void importStatement()

inclusiveOrExpression

public final void inclusiveOrExpression(int lc_stmt)

indexPropertyArgs

public final void indexPropertyArgs(AST indexee)
An expression may be followed by [...]. Unlike Java, these brackets may contain a general argument list, which is passed to the array element operator, which can make of it what it wants. The brackets may also be empty, as in T[]. This is how Groovy names array types.

Returned AST is [INDEX_OP, indexee, ELIST].

interfaceBlock

public final void interfaceBlock()

interfaceDefinition

public final void interfaceDefinition(AST modifiers)

interfaceExtends

public final void interfaceExtends()

interfaceField

public final void interfaceField()

keywordPropertyNames

public final void keywordPropertyNames()
Allowed keywords after dot (as a member name) and before colon (as a label). TODO: What's the rationale for these?

listOfVariables

public final void listOfVariables(AST mods, AST t, Token first)

listOrMapConstructorExpression

public final void listOrMapConstructorExpression()
A list constructor is a argument list enclosed in square brackets, without labels. Any argument can be decorated with a spread operator (*x), but not a label (a:x). Examples: [], [1], [1,2], [1,*l1,2], [*l1,*l2]. (The l1, l2 must be a sequence or null.)

A map constructor is an argument list enclosed in square brackets, with labels everywhere, except on spread arguments, which stand for whole maps spliced in. A colon alone between the brackets also forces the expression to be an empty map constructor. Examples: [:], [a:1], [a:1,b:2], [a:1,*:m1,b:2], [*:m1,*:m2] (The m1, m2 must be a map or null.) Values associated with identical keys overwrite from left to right: [a:1,a:2] === [a:2]

Some malformed constructor expressions are not detected in the parser, but in a post-pass. Bad examples: [1,b:2], [a:1,2], [:1]. (Note that method call arguments, by contrast, can be a mix of keyworded and non-keyworded arguments.)

logicalAndExpression

public final void logicalAndExpression(int lc_stmt)

logicalOrExpression

public final void logicalOrExpression(int lc_stmt)

make

public static GroovyRecognizer make(GroovyLexer lexer)
This factory is the correct way to wire together a Groovy parser and lexer.

make

public static GroovyRecognizer make(InputStream in)

make

public static GroovyRecognizer make(Reader in)

make

public static GroovyRecognizer make(InputBuffer in)

make

public static GroovyRecognizer make(LexerSharedInputState in)

matchGenericTypeBracketsFailed

public void matchGenericTypeBracketsFailed(String problem, String solution)

methodCallArgs

public final void methodCallArgs(AST callee)
An expression may be followed by one or both of (...) and {...}. Note: If either is (...) or {...} present, it is a method call. The {...} is appended to the argument list, and matches a formal of type Closure. If there is no method member, a property (or field) is used instead, and must itself be callable.

If the methodCallArgs are absent, it is a property reference. If there is no property, it is treated as a field reference, but never a method reference.

Arguments in the (...) can be labeled, and the appended block can be labeled also. If there is a mix of unlabeled and labeled arguments, all the labeled arguments must follow the unlabeled arguments, except that the closure (labeled or not) is always a separate final argument. Labeled arguments are collected up and passed as a single argument to a formal of type Map.

Therefore, f(x,y, a:p, b:q) {s} is equivalent in all ways to f(x,y, [a:p,b:q], {s}). Spread arguments of sequence type count as unlabeled arguments, while spread arguments of map type count as labeled arguments. (This distinction must sometimes be checked dynamically.) A plain unlabeled argument is allowed to match a trailing Map or Closure argument: f(x, a:p) {s} === f(*[ x, [a:p], {s} ])

modifier

public final void modifier()

modifiers

public final void modifiers()
A list of one or more modifier, annotation, or "def".

modifiersInternal

public final void modifiersInternal()

modifiersOpt

public final void modifiersOpt()
A list of zero or more modifiers, annotations, or "def".

multipleAssignment

public final void multipleAssignment(int lc_stmt)

multipleAssignmentDeclaration

public final void multipleAssignmentDeclaration()

multipleAssignmentDeclarationStart

public final void multipleAssignmentDeclarationStart()

multiplicativeExpression

public final void multiplicativeExpression(int lc_stmt)

namePart

public final void namePart()
This is the grammar for what can follow a dot: x.a, x.@a, x.&a, x.'a', etc. Note: typeArguments is handled by the caller of namePart.

newArrayDeclarator

public final void newArrayDeclarator()

newExpression

public final void newExpression()
object instantiation. Trees are built as illustrated by the following input/tree pairs: new T() new | T -- ELIST | arg1 -- arg2 -- .. -- argn new int[] new | int -- ARRAY_DECLARATOR new int[] {1,2} new | int -- ARRAY_DECLARATOR -- ARRAY_INIT | EXPR -- EXPR | | 1 2 new int[3] new | int -- ARRAY_DECLARATOR | EXPR | 3 new int[1][2] new | int -- ARRAY_DECLARATOR | ARRAY_DECLARATOR -- EXPR | | EXPR 1 | 2

nls

public final void nls()
Zero or more insignificant newlines, all gobbled up and thrown away.

nlsWarn

public final void nlsWarn()
Zero or more insignificant newlines, all gobbled up and thrown away, but a warning message is left for the user, if there was a newline.

openBlock

public final void openBlock()
An open block is not allowed to have closure arguments.

openOrClosableBlock

public final void openOrClosableBlock()
A sub-block of a block can be either open or closable. It is closable if and only if there are explicit closure arguments. Compare this to a block which is appended to a method call, which is given closure arguments, even if they are not explicit in the code.

packageDefinition

public final void packageDefinition()

parameterDeclaration

public final void parameterDeclaration()
A formal parameter for a method or closure.

parameterDeclarationList

public final void parameterDeclarationList()
A list of zero or more formal parameters. If a parameter is variable length (e.g. String... myArg) it should be to the right of any other parameters of the same kind. General form: (req, ..., opt, ..., [rest], key, ..., [restKeys], [block] This must be sorted out after parsing, since the various declaration forms are impossible to tell apart without backtracking.

parameterModifiersOpt

public final void parameterModifiersOpt()

parenthesizedExpression

public final void parenthesizedExpression()

pathElement

public final void pathElement(AST prefix)

pathElementStart

public final void pathElementStart()

pathExpression

public final void pathExpression(int lc_stmt)
A "path expression" is a name or other primary, possibly qualified by various forms of dot, and/or followed by various kinds of brackets. It can be used for value or assigned to, or else further qualified, indexed, or called. It is called a "path" because it looks like a linear path through a data structure. Examples: x.y, x?.y, x*.y, x.@y; x[], x[y], x[y,z]; x(), x(y), x(y,z); x{s}; a.b[n].c(x).d{s} (Compare to a C lvalue, or LeftHandSide in the JLS section 15.26.) General expressions are built up from path expressions, using operators like '+' and '='.

postfixExpression

public final void postfixExpression(int lc_stmt)

powerExpression

public final void powerExpression(int lc_stmt)

powerExpressionNotPlusMinus

public final void powerExpressionNotPlusMinus(int lc_stmt)

primaryExpression

public final void primaryExpression()

qualifiedTypeName

public final void qualifiedTypeName()

regexExpression

public final void regexExpression(int lc_stmt)

relationalExpression

public final void relationalExpression(int lc_stmt)

requireFailed

public void requireFailed(String problem, String solution)

sep

public final void sep()
A statement separator is either a semicolon or a significant newline. Any number of additional (insignificant) newlines may accompany it.

setFilename

public void setFilename(String f)

setSourceBuffer

public void setSourceBuffer(SourceBuffer sourceBuffer)

shiftExpression

public final void shiftExpression(int lc_stmt)

singleDeclaration

public final void singleDeclaration()
A declaration with one declarator and optional initialization, like a parameterDeclaration. Used to parse declarations used for both binding and effect, in places like argument lists and while statements.

singleDeclarationNoInit

public final void singleDeclarationNoInit()
A declaration with one declarator and no initialization, like a parameterDeclaration. Used to parse loops like for (int x in y) (up to the in keyword).

singleVariable

public final void singleVariable(AST mods, AST t)
Used in cases where a declaration cannot have commas, or ends with the "in" operator instead of '='.

snippetUnit

public final void snippetUnit()
A Groovy script or simple expression. Can be anything legal inside {...}.

statement

public final void statement(int prevToken)
A statement is an element of a block. Typical statements are declarations (which are scoped to the block) and expressions.

statementLabelPrefix

public final void statementLabelPrefix()
A labeled statement, consisting of a vanilla identifier followed by a colon.

strictContextExpression

public final boolean strictContextExpression(boolean allowDeclaration)
Things that can show up as expressions, but only in strict contexts like inside parentheses, argument lists, and list constructors.

stringConstructorExpression

public final void stringConstructorExpression()

stringConstructorValuePart

public final void stringConstructorValuePart()

superClassClause

public final void superClassClause()

suspiciousExpressionStatementStart

public final void suspiciousExpressionStatementStart()
Lookahead for suspicious statement warnings and errors.

throwsClause

public final void throwsClause()

traceIn

public void traceIn(String rname)

traceOut

public void traceOut(String rname)

tryBlock

public final void tryBlock()

type

public final void type()

typeArgument

public final void typeArgument()

typeArgumentBounds

public final void typeArgumentBounds()

typeArgumentSpec

public final void typeArgumentSpec()

typeArguments

public final void typeArguments()

typeArgumentsOrParametersEnd

protected final void typeArgumentsOrParametersEnd()

typeDeclarationStart

public final void typeDeclarationStart()
Used only as a lookahead predicate for nested type declarations.

typeDefinitionInternal

protected final void typeDefinitionInternal(AST mods)

typeNamePairs

public final void typeNamePairs(AST mods, Token first)

typeParameter

public final void typeParameter()

typeParameterBounds

public final void typeParameterBounds()

typeParameters

public final void typeParameters()

typeSpec

public final void typeSpec(boolean addImagNode)

unaryExpression

public final void unaryExpression(int lc_stmt)

unaryExpressionNotPlusMinus

public final void unaryExpressionNotPlusMinus(int lc_stmt)

upperCaseIdent

public final void upperCaseIdent()
An IDENT token whose spelling is required to start with an uppercase letter. In the case of a simple statement {UpperID name} the identifier is taken to be a type name, not a command name.

varInitializer

public final void varInitializer()
An assignment operator '=' followed by an expression. (Never empty.)

variableDeclarator

public final void variableDeclarator(AST mods, AST t, Token first)
Declaration of a variable. This can be a class/instance variable, or a local variable in a method It can also include possible initialization.

variableDefinitions

public final void variableDefinitions(AST mods, AST t)
The tail of a declaration. Either v1, v2, ... (with possible initializers) or else m(args){body}. The two arguments are the modifier list (if any) and the declaration head (if any). The declaration head is the variable type, or (for a method) the return type. If it is missing, then the variable type is taken from its initializer (if there is one). Otherwise, the variable type defaults to 'any'. DECIDE: Method return types default to the type of the method body, as an expression.

variableName

public final void variableName()

wildcardType

public final void wildcardType()

 

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