Package org.codehaus.groovy.transform.tailrec

Class VariableExpressionReplacer

java.lang.Object

org.codehaus.groovy.ast.CodeVisitorSupport

org.codehaus.groovy.transform.tailrec.VariableExpressionReplacer

All Implemented Interfaces:

GroovyCodeVisitor

public class VariableExpressionReplacer
extends CodeVisitorSupport

Tool for replacing VariableExpression instances in an AST by other VariableExpression instances. Regardless of a real change taking place in nested expressions, all considered expression (trees) will be replaced. This could be optimized to accelerate compilation.

Within @TailRecursive it is used - to swap the access of method args with the access to iteration variables - to swap the access of iteration variables with the access of temp vars

Constructor Summary

Constructors

Constructor	Description
VariableExpressionReplacer(Closure<Boolean> when, Closure<VariableExpression> replaceWith)

Method Summary

Modifier and Type	Method	Description
Closure<VariableExpression>	getReplaceWith()
Closure<Boolean>	getWhen()
void	replaceIn(ASTNode root)
void	setReplaceWith(Closure<VariableExpression> replaceWith)
void	setWhen(Closure<Boolean> when)
void	visitAssertStatement(AssertStatement statement)
void	visitBinaryExpression(BinaryExpression expression)	It's the only Expression type in which replacing is considered.
void	visitCaseStatement(CaseStatement statement)
void	visitDoWhileLoop(DoWhileStatement loop)
void	visitExpressionStatement(ExpressionStatement statement)
void	visitForLoop(ForStatement forLoop)
void	visitIfElse(IfStatement ifElse)
void	visitReturnStatement(ReturnStatement statement)
void	visitSwitch(SwitchStatement statement)
void	visitSynchronizedStatement(SynchronizedStatement statement)
void	visitThrowStatement(ThrowStatement statement)
void	visitWhileLoop(WhileStatement loop)

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

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

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

VariableExpressionReplacer

public VariableExpressionReplacer(Closure<Boolean> when,
 Closure<VariableExpression> replaceWith)

Method Details

visitReturnStatement

public void visitReturnStatement(ReturnStatement statement)

Specified by:

visitReturnStatement in interface GroovyCodeVisitor

Overrides:

visitReturnStatement in class CodeVisitorSupport

visitIfElse

public void visitIfElse(IfStatement ifElse)

Specified by:

visitIfElse in interface GroovyCodeVisitor

Overrides:

visitIfElse in class CodeVisitorSupport

visitForLoop

public void visitForLoop(ForStatement forLoop)

Specified by:

visitForLoop in interface GroovyCodeVisitor

Overrides:

visitForLoop in class CodeVisitorSupport

visitBinaryExpression

public void visitBinaryExpression(BinaryExpression expression)

It's the only Expression type in which replacing is considered. That's an abuse of the class, but I couldn't think of a better way.

Specified by:

visitBinaryExpression in interface GroovyCodeVisitor

Overrides:

visitBinaryExpression in class CodeVisitorSupport

visitWhileLoop

public void visitWhileLoop(WhileStatement loop)

Specified by:

visitWhileLoop in interface GroovyCodeVisitor

Overrides:

visitWhileLoop in class CodeVisitorSupport

visitDoWhileLoop

public void visitDoWhileLoop(DoWhileStatement loop)

Specified by:

visitDoWhileLoop in interface GroovyCodeVisitor

Overrides:

visitDoWhileLoop in class CodeVisitorSupport

visitSwitch

public void visitSwitch(SwitchStatement statement)

Specified by:

visitSwitch in interface GroovyCodeVisitor

Overrides:

visitSwitch in class CodeVisitorSupport

visitCaseStatement

public void visitCaseStatement(CaseStatement statement)

Specified by:

visitCaseStatement in interface GroovyCodeVisitor

Overrides:

visitCaseStatement in class CodeVisitorSupport

visitExpressionStatement

public void visitExpressionStatement(ExpressionStatement statement)

Specified by:

visitExpressionStatement in interface GroovyCodeVisitor

Overrides:

visitExpressionStatement in class CodeVisitorSupport

visitThrowStatement

public void visitThrowStatement(ThrowStatement statement)

Specified by:

visitThrowStatement in interface GroovyCodeVisitor

Overrides:

visitThrowStatement in class CodeVisitorSupport

visitAssertStatement

public void visitAssertStatement(AssertStatement statement)

Specified by:

visitAssertStatement in interface GroovyCodeVisitor

Overrides:

visitAssertStatement in class CodeVisitorSupport

visitSynchronizedStatement

public void visitSynchronizedStatement(SynchronizedStatement statement)

Specified by:

visitSynchronizedStatement in interface GroovyCodeVisitor

Overrides:

visitSynchronizedStatement in class CodeVisitorSupport

replaceIn

public void replaceIn(ASTNode root)

getWhen

public Closure<Boolean> getWhen()

setWhen

public void setWhen(Closure<Boolean> when)

getReplaceWith

public Closure<VariableExpression> getReplaceWith()

setReplaceWith

public void setReplaceWith(Closure<VariableExpression> replaceWith)