Package org.codehaus.groovy.control

Class GenericsVisitor

java.lang.Object

org.codehaus.groovy.ast.CodeVisitorSupport

org.codehaus.groovy.ast.ClassCodeVisitorSupport

org.codehaus.groovy.control.GenericsVisitor

All Implemented Interfaces:

GroovyClassVisitor, GroovyCodeVisitor, ErrorCollecting

public class GenericsVisitor
extends ClassCodeVisitorSupport

Verify correct usage of generics. This includes:

• class header (class and superclass declaration)
• arity of type parameters for fields, parameters, local variables
• invalid diamond <> usage

Constructor Summary

Constructors

Constructor	Description
GenericsVisitor(SourceUnit source)	Creates a visitor that validates generic type usage for one source unit.

Method Summary

Modifier and Type	Method	Description
protected SourceUnit	getSourceUnit()	Returns the source unit currently being verified.
void	visitArrayExpression(ArrayExpression expression)	Validates generic usage for array element types.
void	visitCastExpression(CastExpression expression)	Validates generic usage for cast target types.
void	visitClass(ClassNode node)	Validates generic usage in a class header and its contents.
void	visitConstructorCallExpression(ConstructorCallExpression expression)	Validates generic usage on constructor call types.
protected void	visitConstructorOrMethod(MethodNode node, boolean isConstructor)	Validates generic usage for a constructor or method signature.
void	visitDeclarationExpression(DeclarationExpression expression)	Validates generic usage in declared variable types.
void	visitField(FieldNode node)	Validates generic usage for a field declaration.

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

addError, visitAnnotation, visitAnnotations, visitAnnotations, visitAssertStatement, visitBlockStatement, visitBreakStatement, visitCaseStatement, visitCatchStatement, visitClassCodeContainer, visitClosureExpression, visitConstructor, visitContinueStatement, visitDoWhileLoop, visitExpressionStatement, 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, visitAttributeExpression, visitBinaryExpression, visitBitwiseNegationExpression, visitBooleanExpression, visitBytecodeExpression, visitClassExpression, visitClosureListExpression, visitConstantExpression, 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

GenericsVisitor

public GenericsVisitor(SourceUnit source)

Creates a visitor that validates generic type usage for one source unit.

Parameters:

source - the source unit being verified

Method Details

getSourceUnit

protected SourceUnit getSourceUnit()

Returns the source unit currently being verified.

Specified by:

getSourceUnit in class ClassCodeVisitorSupport

Returns:

the active source unit

visitClass

public void visitClass(ClassNode node)

Validates generic usage in a class header and its contents.

Specified by:

visitClass in interface GroovyClassVisitor

Overrides:

visitClass in class ClassCodeVisitorSupport

Parameters:

node - the class to inspect

visitField

public void visitField(FieldNode node)

Validates generic usage for a field declaration.

Specified by:

visitField in interface GroovyClassVisitor

Overrides:

visitField in class ClassCodeVisitorSupport

Parameters:

node - the field to inspect

visitConstructorOrMethod

protected void visitConstructorOrMethod(MethodNode node,
 boolean isConstructor)

Validates generic usage for a constructor or method signature.

Overrides:

visitConstructorOrMethod in class ClassCodeVisitorSupport

Parameters:

node - the executable member to inspect

isConstructor - whether node is a constructor

visitConstructorCallExpression

public void visitConstructorCallExpression(ConstructorCallExpression expression)

Validates generic usage on constructor call types.

Specified by:

visitConstructorCallExpression in interface GroovyCodeVisitor

Overrides:

visitConstructorCallExpression in class CodeVisitorSupport

Parameters:

expression - the constructor call to inspect

visitDeclarationExpression

public void visitDeclarationExpression(DeclarationExpression expression)

Validates generic usage in declared variable types.

Specified by:

visitDeclarationExpression in interface GroovyCodeVisitor

Overrides:

visitDeclarationExpression in class ClassCodeVisitorSupport

Parameters:

expression - the declaration expression to inspect

visitArrayExpression

public void visitArrayExpression(ArrayExpression expression)

Validates generic usage for array element types.

Specified by:

visitArrayExpression in interface GroovyCodeVisitor

Overrides:

visitArrayExpression in class CodeVisitorSupport

Parameters:

expression - the array expression to inspect

visitCastExpression

public void visitCastExpression(CastExpression expression)

Validates generic usage for cast target types.

Specified by:

visitCastExpression in interface GroovyCodeVisitor

Overrides:

visitCastExpression in class CodeVisitorSupport

Parameters:

expression - the cast expression to inspect