Package org.codehaus.groovy.control

Class OptimizerVisitor

java.lang.Object

org.codehaus.groovy.ast.CodeVisitorSupport

org.codehaus.groovy.ast.ClassCodeVisitorSupport

org.codehaus.groovy.ast.ClassCodeExpressionTransformer

org.codehaus.groovy.control.OptimizerVisitor

All Implemented Interfaces:

ExpressionTransformer, GroovyClassVisitor, GroovyCodeVisitor, ErrorCollecting

public class OptimizerVisitor
extends ClassCodeExpressionTransformer

Visitor to produce several optimizations:

• to replace numbered constants with references to static fields
• remove superfluous references to GroovyObject interface

Constructor Summary

Constructors

Constructor	Description
OptimizerVisitor(CompilationUnit cu)

Method Summary

Modifier and Type	Method	Description
protected SourceUnit	getSourceUnit()	Provides access to the SourceUnit for error reporting during visitation.
Expression	transform(Expression exp)	NOTE: This method does not visit Expressions within Closures, for performance and historical reasons.
void	visitClass(ClassNode node, SourceUnit source)
void	visitClosureExpression(ClosureExpression expression)	Visits a ClosureExpression with annotation processing, traversing parameter annotations before delegating to parent traversal.

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

setSourcePosition, visitAnnotation, visitAssertStatement, visitCaseStatement, visitConstructorOrMethod, visitDoWhileLoop, visitExpressionStatement, visitField, visitForLoop, visitIfElse, visitProperty, visitReturnStatement, visitSwitch, visitSynchronizedStatement, visitThrowStatement, visitWhileLoop

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

addError, visitAnnotations, visitAnnotations, visitBlockStatement, visitBreakStatement, visitCatchStatement, visitClass, visitClassCodeContainer, visitConstructor, visitContinueStatement, visitDeclarationExpression, visitImports, visitMethod, visitObjectInitializerStatements, visitPackage, visitStatement, visitStatementAnnotations, visitTryCatchFinally

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, 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

OptimizerVisitor

public OptimizerVisitor(CompilationUnit cu)

Method Details

visitClass

public void visitClass(ClassNode node,
 SourceUnit source)

transform

public Expression transform(Expression exp)

Description copied from class: ClassCodeExpressionTransformer

NOTE: This method does not visit Expressions within Closures, for performance and historical reasons. If you want those Expressions to be visited, you can do this:

 
 public class YourTransformer extends ClassCodeExpressionTransformer {
   ...

   @Override
   public Expression transform(final Expression expr) {
     if (expr instanceof ClosureExpression) {
       expr.visit(this);

       return expr;
     }
     // ...
   }
 }
 

Specified by:

transform in interface ExpressionTransformer

Overrides:

transform in class ClassCodeExpressionTransformer

Parameters:

exp - the expression to transform, may be null

Returns:

the transformed expression, may be the same instance, a new instance, or null

getSourceUnit

protected SourceUnit getSourceUnit()

Description copied from class: ClassCodeVisitorSupport

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

visitClosureExpression

public void visitClosureExpression(ClosureExpression expression)

Description copied from class: ClassCodeVisitorSupport

Visits a ClosureExpression with annotation processing, traversing parameter annotations before delegating to parent traversal.

Specified by:

visitClosureExpression in interface GroovyCodeVisitor

Overrides:

visitClosureExpression in class ClassCodeExpressionTransformer

Parameters:

expression - the closure expression to visit