org.eclipse.jdt.core/compiler/org/eclipse/jdt/internal/compiler/ast/ParameterizedSingleTypeReference.java - gerrit/aspectj/org.aspectj.shadows - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jdt.internal.compiler.ast;

 import org.eclipse.jdt.core.compiler.CharOperation;
 import org.eclipse.jdt.internal.compiler.ASTVisitor;
 import org.eclipse.jdt.internal.compiler.lookup.*;

 /**
  * Syntactic representation of a reference to a generic type.
  * Note that it might also have a dimension.
  */
 public class ParameterizedSingleTypeReference extends ArrayTypeReference {

 	public TypeReference[] typeArguments;
 	private boolean didResolve = false;

 	public ParameterizedSingleTypeReference(char[] name, TypeReference[] typeArguments, int dim, long pos){
 		super(name, dim, pos);
 		this.originalSourceEnd = this.sourceEnd;
 		this.typeArguments = typeArguments;
 	}
 	public void checkBounds(Scope scope) {
 		if (this.resolvedType == null) return;

 		if (this.resolvedType.leafComponentType() instanceof ParameterizedTypeBinding) {
 			ParameterizedTypeBinding parameterizedType = (ParameterizedTypeBinding) this.resolvedType.leafComponentType();
 			ReferenceBinding currentType = parameterizedType.type;
 			TypeVariableBinding[] typeVariables = currentType.typeVariables();
 			TypeBinding[] argTypes = parameterizedType.arguments;
 			if (argTypes != null && typeVariables != null) { // may be null in error cases
 				for (int i = 0, argLength = typeVariables.length; i < argLength; i++)
 					if (typeVariables[i].boundCheck(parameterizedType, argTypes[i]) != TypeConstants.OK)
 						scope.problemReporter().typeMismatchError(argTypes[i], typeVariables[i], currentType, this.typeArguments[i]);
 			}
 		}
 	}
 	/**
 	 * @see org.eclipse.jdt.internal.compiler.ast.TypeReference#copyDims(int)
 	 */
 	public TypeReference copyDims(int dim) {
 		this.dimensions = dim;
 		return this;
 	}

 	/**
 	 * @return char[][]
 	 */
 	public char [][] getParameterizedTypeName(){
 		StringBuffer buffer = new StringBuffer(5);
 		buffer.append(this.token).append('<');
 		for (int i = 0, length = this.typeArguments.length; i < length; i++) {
 			if (i > 0) buffer.append(',');
 			buffer.append(CharOperation.concatWith(this.typeArguments[i].getParameterizedTypeName(), '.'));
 		}
 		buffer.append('>');
 		int nameLength = buffer.length();
 		char[] name = new char[nameLength];
 		buffer.getChars(0, nameLength, name, 0);
 		int dim = this.dimensions;
 		if (dim > 0) {
 			char[] dimChars = new char[dim*2];
 			for (int i = 0; i < dim; i++) {
 				int index = i*2;
 				dimChars[index] = '[';
 				dimChars[index+1] = ']';
 			}
 			name = CharOperation.concat(name, dimChars);
 		}
 		return new char[][]{ name };
 	}
 	/**
      * @see org.eclipse.jdt.internal.compiler.ast.ArrayQualifiedTypeReference#getTypeBinding(org.eclipse.jdt.internal.compiler.lookup.Scope)
      */
     protected TypeBinding getTypeBinding(Scope scope) {
         return null; // not supported here - combined with resolveType(...)
     }

     /*
      * No need to check for reference to raw type per construction
      */
 	private TypeBinding internalResolveType(Scope scope, ReferenceBinding enclosingType, boolean checkBounds) {

 		// handle the error here
 		this.constant = NotAConstant;
 		if (this.didResolve) { // is a shared type reference which was already resolved
 			if (this.resolvedType != null && !this.resolvedType.isValidBinding())
 				return null; // already reported error
 			return this.resolvedType;
 		}
 	    this.didResolve = true;
 		if (enclosingType == null) {
 			this.resolvedType = scope.getType(token);
 			if (!(this.resolvedType.isValidBinding())) {
 				reportInvalidType(scope);
 				return null;
 			}
 			enclosingType = this.resolvedType.enclosingType(); // if member type
 			if (enclosingType != null) {
 				ReferenceBinding currentType = (ReferenceBinding) this.resolvedType;
 				if (currentType.isStatic()
 						|| (enclosingType.isGenericType()
 								&& enclosingType.outermostEnclosingType() != scope.outerMostClassScope().referenceContext.binding)) {
 					enclosingType = (ReferenceBinding) scope.convertToRawType(enclosingType);
 				}
 			}
 		} else { // resolving member type (relatively to enclosingType)
 			this.resolvedType = scope.getMemberType(token, (ReferenceBinding)enclosingType.erasure());
 			if (!this.resolvedType.isValidBinding()) {
 				scope.problemReporter().invalidEnclosingType(this, this.resolvedType, enclosingType);
 				return null;
 			}
 			if (isTypeUseDeprecated(this.resolvedType, scope))
 				scope.problemReporter().deprecatedType(this.resolvedType, this);
 		}

 		// check generic and arity
 	    boolean isClassScope = scope.kind == Scope.CLASS_SCOPE;
 		ReferenceBinding currentType = (ReferenceBinding) this.resolvedType;
 		int argLength = this.typeArguments.length;
 		TypeBinding[] argTypes = new TypeBinding[argLength];
 		boolean argHasError = false;
 		for (int i = 0; i < argLength; i++) {
 		    TypeReference typeArgument = this.typeArguments[i];
 		    TypeBinding argType = isClassScope
 				? typeArgument.resolveTypeArgument((ClassScope) scope, currentType, i)
 				: typeArgument.resolveTypeArgument((BlockScope) scope, currentType, i);
 		     if (argType == null) {
 		         argHasError = true;
 		     } else {
 			    argTypes[i] = argType;
 		     }
 		}
 		if (argHasError) return null;
 // TODO (philippe)	if ((this.bits & ASTNode.IsSuperType) != 0)
 		if (isClassScope)
 			if (((ClassScope) scope).detectHierarchyCycle(currentType, this, argTypes))
 				return null;

 		TypeVariableBinding[] typeVariables = currentType.typeVariables();
 		if (typeVariables == NoTypeVariables) { // check generic
 			scope.problemReporter().nonGenericTypeCannotBeParameterized(this, currentType, argTypes);
 			return null;
 		} else if (argLength != typeVariables.length) { // check arity
 			scope.problemReporter().incorrectArityForParameterizedType(this, currentType, argTypes);
 			return null;
 		} else if (!currentType.isStatic() && enclosingType != null && enclosingType.isRawType()){
 			scope.problemReporter().rawMemberTypeCannotBeParameterized(
 					this, scope.environment().createRawType((ReferenceBinding)currentType.erasure(), enclosingType), argTypes);
 			return null;
 		}

 		// if generic type X<T> is referred to as parameterized X<T>, then answer itself
 		boolean allEqual = true;
 	    for (int i = 0; allEqual && i < argLength; i++)
 			allEqual = typeVariables[i] == argTypes[i];
 	    if (!allEqual) {
 	    	ParameterizedTypeBinding parameterizedType = scope.createParameterizedType((ReferenceBinding)currentType.erasure(), argTypes, enclosingType);
 			// check argument type compatibility
 			if (checkBounds) // otherwise will do it in Scope.connectTypeVariables() or generic method resolution
 				for (int i = 0; i < argLength; i++)
 				    if (typeVariables[i].boundCheck(parameterizedType, argTypes[i]) != TypeConstants.OK)
 						scope.problemReporter().typeMismatchError(argTypes[i], typeVariables[i], currentType, this.typeArguments[i]);

 			this.resolvedType = parameterizedType;
 			if (isTypeUseDeprecated(this.resolvedType, scope))
 				reportDeprecatedType(scope);
 		}
 		// array type ?
 		if (this.dimensions > 0) {
 			if (dimensions > 255)
 				scope.problemReporter().tooManyDimensions(this);
 			this.resolvedType = scope.createArrayType(this.resolvedType, dimensions);
 		}
 		return this.resolvedType;
 	}

 	public StringBuffer printExpression(int indent, StringBuffer output){
 		output.append(token);
 		output.append("<"); //$NON-NLS-1$
 		int max = typeArguments.length - 1;
 		for (int i= 0; i < max; i++) {
 			typeArguments[i].print(0, output);
 			output.append(", ");//$NON-NLS-1$
 		}
 		typeArguments[max].print(0, output);
 		output.append(">"); //$NON-NLS-1$
 		if ((this.bits & IsVarArgs) != 0) {
 			for (int i= 0 ; i < dimensions - 1; i++) {
 				output.append("[]"); //$NON-NLS-1$
 			}
 			output.append("..."); //$NON-NLS-1$
 		} else {
 			for (int i= 0 ; i < dimensions; i++) {
 				output.append("[]"); //$NON-NLS-1$
 			}
 		}
 		return output;
 	}

 	public TypeBinding resolveType(BlockScope scope, boolean checkBounds) {
 	    return internalResolveType(scope, null, checkBounds);
 	}

 	public TypeBinding resolveType(ClassScope scope) {
 	    return internalResolveType(scope, null, false /*no bounds check in classScope*/);
 	}

 	public TypeBinding resolveTypeEnclosing(BlockScope scope, ReferenceBinding enclosingType) {
 	    return internalResolveType(scope, enclosingType, true/*check bounds*/);
 	}

 	public void traverse(ASTVisitor visitor, BlockScope scope) {
 		if (visitor.visit(this, scope)) {
 			for (int i = 0, max = this.typeArguments.length; i < max; i++) {
 				this.typeArguments[i].traverse(visitor, scope);
 			}
 		}
 		visitor.endVisit(this, scope);
 	}

 	public void traverse(ASTVisitor visitor, ClassScope scope) {
 		if (visitor.visit(this, scope)) {
 			for (int i = 0, max = this.typeArguments.length; i < max; i++) {
 				this.typeArguments[i].traverse(visitor, scope);
 			}
 		}
 		visitor.endVisit(this, scope);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2005 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jdt.internal.compiler.ast;

	import org.eclipse.jdt.core.compiler.CharOperation;
	import org.eclipse.jdt.internal.compiler.ASTVisitor;
	import org.eclipse.jdt.internal.compiler.lookup.*;

	/**
	* Syntactic representation of a reference to a generic type.
	* Note that it might also have a dimension.
	*/
	public class ParameterizedSingleTypeReference extends ArrayTypeReference {

	public TypeReference[] typeArguments;
	private boolean didResolve = false;

	public ParameterizedSingleTypeReference(char[] name, TypeReference[] typeArguments, int dim, long pos){
	super(name, dim, pos);
	this.originalSourceEnd = this.sourceEnd;
	this.typeArguments = typeArguments;
	}
	public void checkBounds(Scope scope) {
	if (this.resolvedType == null) return;

	if (this.resolvedType.leafComponentType() instanceof ParameterizedTypeBinding) {
	ParameterizedTypeBinding parameterizedType = (ParameterizedTypeBinding) this.resolvedType.leafComponentType();
	ReferenceBinding currentType = parameterizedType.type;
	TypeVariableBinding[] typeVariables = currentType.typeVariables();
	TypeBinding[] argTypes = parameterizedType.arguments;
	if (argTypes != null && typeVariables != null) { // may be null in error cases
	for (int i = 0, argLength = typeVariables.length; i < argLength; i++)
	if (typeVariables[i].boundCheck(parameterizedType, argTypes[i]) != TypeConstants.OK)
	scope.problemReporter().typeMismatchError(argTypes[i], typeVariables[i], currentType, this.typeArguments[i]);
	}
	}
	}
	/**
	* @see org.eclipse.jdt.internal.compiler.ast.TypeReference#copyDims(int)
	*/
	public TypeReference copyDims(int dim) {
	this.dimensions = dim;
	return this;
	}

	/**
	* @return char[][]
	*/
	public char [][] getParameterizedTypeName(){
	StringBuffer buffer = new StringBuffer(5);
	buffer.append(this.token).append('<');
	for (int i = 0, length = this.typeArguments.length; i < length; i++) {
	if (i > 0) buffer.append(',');
	buffer.append(CharOperation.concatWith(this.typeArguments[i].getParameterizedTypeName(), '.'));
	}
	buffer.append('>');
	int nameLength = buffer.length();
	char[] name = new char[nameLength];
	buffer.getChars(0, nameLength, name, 0);
	int dim = this.dimensions;
	if (dim > 0) {
	char[] dimChars = new char[dim*2];
	for (int i = 0; i < dim; i++) {
	int index = i*2;
	dimChars[index] = '[';
	dimChars[index+1] = ']';
	}
	name = CharOperation.concat(name, dimChars);
	}
	return new char[][]{ name };
	}
	/**
	* @see org.eclipse.jdt.internal.compiler.ast.ArrayQualifiedTypeReference#getTypeBinding(org.eclipse.jdt.internal.compiler.lookup.Scope)
	*/
	protected TypeBinding getTypeBinding(Scope scope) {
	return null; // not supported here - combined with resolveType(...)
	}

	/*
	* No need to check for reference to raw type per construction
	*/
	private TypeBinding internalResolveType(Scope scope, ReferenceBinding enclosingType, boolean checkBounds) {

	// handle the error here
	this.constant = NotAConstant;
	if (this.didResolve) { // is a shared type reference which was already resolved
	if (this.resolvedType != null && !this.resolvedType.isValidBinding())
	return null; // already reported error
	return this.resolvedType;
	}
	this.didResolve = true;
	if (enclosingType == null) {
	this.resolvedType = scope.getType(token);
	if (!(this.resolvedType.isValidBinding())) {
	reportInvalidType(scope);
	return null;
	}
	enclosingType = this.resolvedType.enclosingType(); // if member type
	if (enclosingType != null) {
	ReferenceBinding currentType = (ReferenceBinding) this.resolvedType;
	if (currentType.isStatic()
	\|\| (enclosingType.isGenericType()
	&& enclosingType.outermostEnclosingType() != scope.outerMostClassScope().referenceContext.binding)) {
	enclosingType = (ReferenceBinding) scope.convertToRawType(enclosingType);
	}
	}
	} else { // resolving member type (relatively to enclosingType)
	this.resolvedType = scope.getMemberType(token, (ReferenceBinding)enclosingType.erasure());
	if (!this.resolvedType.isValidBinding()) {
	scope.problemReporter().invalidEnclosingType(this, this.resolvedType, enclosingType);
	return null;
	}
	if (isTypeUseDeprecated(this.resolvedType, scope))
	scope.problemReporter().deprecatedType(this.resolvedType, this);
	}

	// check generic and arity
	boolean isClassScope = scope.kind == Scope.CLASS_SCOPE;
	ReferenceBinding currentType = (ReferenceBinding) this.resolvedType;
	int argLength = this.typeArguments.length;
	TypeBinding[] argTypes = new TypeBinding[argLength];
	boolean argHasError = false;
	for (int i = 0; i < argLength; i++) {
	TypeReference typeArgument = this.typeArguments[i];
	TypeBinding argType = isClassScope
	? typeArgument.resolveTypeArgument((ClassScope) scope, currentType, i)
	: typeArgument.resolveTypeArgument((BlockScope) scope, currentType, i);
	if (argType == null) {
	argHasError = true;
	} else {
	argTypes[i] = argType;
	}
	}
	if (argHasError) return null;
	// TODO (philippe) if ((this.bits & ASTNode.IsSuperType) != 0)
	if (isClassScope)
	if (((ClassScope) scope).detectHierarchyCycle(currentType, this, argTypes))
	return null;

	TypeVariableBinding[] typeVariables = currentType.typeVariables();
	if (typeVariables == NoTypeVariables) { // check generic
	scope.problemReporter().nonGenericTypeCannotBeParameterized(this, currentType, argTypes);
	return null;
	} else if (argLength != typeVariables.length) { // check arity
	scope.problemReporter().incorrectArityForParameterizedType(this, currentType, argTypes);
	return null;
	} else if (!currentType.isStatic() && enclosingType != null && enclosingType.isRawType()){
	scope.problemReporter().rawMemberTypeCannotBeParameterized(
	this, scope.environment().createRawType((ReferenceBinding)currentType.erasure(), enclosingType), argTypes);
	return null;
	}

	// if generic type X<T> is referred to as parameterized X<T>, then answer itself
	boolean allEqual = true;
	for (int i = 0; allEqual && i < argLength; i++)
	allEqual = typeVariables[i] == argTypes[i];
	if (!allEqual) {
	ParameterizedTypeBinding parameterizedType = scope.createParameterizedType((ReferenceBinding)currentType.erasure(), argTypes, enclosingType);
	// check argument type compatibility
	if (checkBounds) // otherwise will do it in Scope.connectTypeVariables() or generic method resolution
	for (int i = 0; i < argLength; i++)
	if (typeVariables[i].boundCheck(parameterizedType, argTypes[i]) != TypeConstants.OK)
	scope.problemReporter().typeMismatchError(argTypes[i], typeVariables[i], currentType, this.typeArguments[i]);

	this.resolvedType = parameterizedType;
	if (isTypeUseDeprecated(this.resolvedType, scope))
	reportDeprecatedType(scope);
	}
	// array type ?
	if (this.dimensions > 0) {
	if (dimensions > 255)
	scope.problemReporter().tooManyDimensions(this);
	this.resolvedType = scope.createArrayType(this.resolvedType, dimensions);
	}
	return this.resolvedType;
	}

	public StringBuffer printExpression(int indent, StringBuffer output){
	output.append(token);
	output.append("<"); //$NON-NLS-1$
	int max = typeArguments.length - 1;
	for (int i= 0; i < max; i++) {
	typeArguments[i].print(0, output);
	output.append(", ");//$NON-NLS-1$
	}
	typeArguments[max].print(0, output);
	output.append(">"); //$NON-NLS-1$
	if ((this.bits & IsVarArgs) != 0) {
	for (int i= 0 ; i < dimensions - 1; i++) {
	output.append("[]"); //$NON-NLS-1$
	}
	output.append("..."); //$NON-NLS-1$
	} else {
	for (int i= 0 ; i < dimensions; i++) {
	output.append("[]"); //$NON-NLS-1$
	}
	}
	return output;
	}

	public TypeBinding resolveType(BlockScope scope, boolean checkBounds) {
	return internalResolveType(scope, null, checkBounds);
	}

	public TypeBinding resolveType(ClassScope scope) {
	return internalResolveType(scope, null, false /no bounds check in classScope/);
	}

	public TypeBinding resolveTypeEnclosing(BlockScope scope, ReferenceBinding enclosingType) {
	return internalResolveType(scope, enclosingType, true/check bounds/);
	}

	public void traverse(ASTVisitor visitor, BlockScope scope) {
	if (visitor.visit(this, scope)) {
	for (int i = 0, max = this.typeArguments.length; i < max; i++) {
	this.typeArguments[i].traverse(visitor, scope);
	}
	}
	visitor.endVisit(this, scope);
	}

	public void traverse(ASTVisitor visitor, ClassScope scope) {
	if (visitor.visit(this, scope)) {
	for (int i = 0, max = this.typeArguments.length; i < max; i++) {
	this.typeArguments[i].traverse(visitor, scope);
	}
	}
	visitor.endVisit(this, scope);
	}
	}