Package org.codehaus.groovy.transform.stc

Class SharedVariableCollector

java.lang.Object

org.codehaus.groovy.ast.CodeVisitorSupport

org.codehaus.groovy.ast.ClassCodeVisitorSupport

org.codehaus.groovy.transform.stc.SharedVariableCollector

All Implemented Interfaces:

GroovyClassVisitor, GroovyCodeVisitor, ErrorCollecting

public class SharedVariableCollector
extends ClassCodeVisitorSupport

A visitor which collects the list of variable expressions which are closure shared.

Constructor Summary

Constructors

Constructor	Description
SharedVariableCollector(SourceUnit unit)	Creates a collector for the supplied source unit.

Method Summary

Modifier and Type	Method	Description
Set<VariableExpression>	getClosureSharedExpressions()	Returns the collected closure-shared variable expressions.
protected SourceUnit	getSourceUnit()	Provides access to the SourceUnit for error reporting during visitation.
void	visitVariableExpression(VariableExpression expression)	Records closure-shared variables while avoiding recursive closure traversal.

Methods inherited from class org.codehaus.groovy.ast.ClassCodeVisitorSupport

addError, visitAnnotation, visitAnnotations, visitAnnotations, visitAssertStatement, visitBlockStatement, visitBreakStatement, visitCaseStatement, visitCatchStatement, visitClass, visitClassCodeContainer, visitClosureExpression, visitConstructor, visitConstructorOrMethod, visitContinueStatement, visitDeclarationExpression, visitDoWhileLoop, visitExpressionStatement, visitField, visitForLoop, visitIfElse, visitImports, visitMethod, visitObjectInitializerStatements, visitPackage, visitProperty, visitReturnStatement, visitStatement, visitStatementAnnotations, visitSwitch, visitSynchronizedStatement, visitThrowStatement, visitTryCatchFinally, visitWhileLoop

Methods inherited from class org.codehaus.groovy.ast.CodeVisitorSupport

afterSwitchCaseStatementsVisited, afterSwitchConditionExpressionVisited, visitArgumentlistExpression, visitArrayExpression, visitAttributeExpression, visitBinaryExpression, visitBitwiseNegationExpression, visitBooleanExpression, visitBytecodeExpression, visitCastExpression, visitClassExpression, visitClosureListExpression, visitConstantExpression, visitConstructorCallExpression, visitEmptyStatement, visitFieldExpression, visitGStringExpression, visitLambdaExpression, visitListExpression, visitMapEntryExpression, visitMapExpression, visitMethodCallExpression, visitMethodPointerExpression, visitMethodReferenceExpression, visitNotExpression, visitPostfixExpression, visitPrefixExpression, visitPropertyExpression, visitRangeExpression, visitShortTernaryExpression, visitSpreadExpression, visitSpreadMapExpression, visitStaticMethodCallExpression, visitTernaryExpression, visitTupleExpression, visitUnaryMinusExpression, visitUnaryPlusExpression

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.codehaus.groovy.ast.GroovyCodeVisitor

visit, visit, visitEmptyExpression, visitListOfExpressions

Constructor Details

SharedVariableCollector

public SharedVariableCollector(SourceUnit unit)

Creates a collector for the supplied source unit.

Method Details

getSourceUnit

protected SourceUnit getSourceUnit()

Provides access to the SourceUnit for error reporting during visitation. Implementations must override this method.

Specified by:

getSourceUnit in class ClassCodeVisitorSupport

Returns:

the source unit for this visitor

getClosureSharedExpressions

public Set<VariableExpression> getClosureSharedExpressions()

Returns the collected closure-shared variable expressions.

visitVariableExpression

public void visitVariableExpression(VariableExpression expression)

Records closure-shared variables while avoiding recursive closure traversal.

Specified by:

visitVariableExpression in interface GroovyCodeVisitor

Overrides:

visitVariableExpression in class CodeVisitorSupport

Parameters:

expression - the variable expression