/*******************************************************************************
* Copyright (c) 2004, 2015 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:
* John Camelon (IBM) - Initial API and implementation
* Mike Kucera (IBM) - implicit names
* Markus Schorn (Wind River Systems)
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;
import static org.eclipse.cdt.core.dom.ast.IASTExpression.ValueCategory.LVALUE;
import static org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.SemanticUtil.CVTYPE;
import static org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.SemanticUtil.REF;
import static org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.SemanticUtil.TDEF;
import static org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.SemanticUtil.getNestedType;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.DOMException;
import org.eclipse.cdt.core.dom.ast.ExpansionOverlapsBoundaryException;
import org.eclipse.cdt.core.dom.ast.IASTExpression;
import org.eclipse.cdt.core.dom.ast.IASTIdExpression;
import org.eclipse.cdt.core.dom.ast.IASTImplicitDestructorName;
import org.eclipse.cdt.core.dom.ast.IASTImplicitName;
import org.eclipse.cdt.core.dom.ast.IASTInitializerClause;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTFieldReference;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTFunctionCallExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassType;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPConstructor;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPFunction;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPMethod;
import org.eclipse.cdt.core.parser.IToken;
import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
import org.eclipse.cdt.internal.core.dom.parser.IASTAmbiguityParent;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPSemantics;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.DestructorCallCollector;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalFixed;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalFunctionCall;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalTypeId;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.LookupData;
public class CPPASTFunctionCallExpression extends ASTNode
implements ICPPASTFunctionCallExpression, IASTAmbiguityParent, ICPPEvaluationOwner {
private ICPPASTExpression fFunctionName;
private IASTInitializerClause[] fArguments;
private IASTImplicitName[] fImplicitNames;
private ICPPEvaluation fEvaluation;
private IASTImplicitDestructorName[] fImplicitDestructorNames;
public CPPASTFunctionCallExpression() {
setArguments(null);
}
public CPPASTFunctionCallExpression(IASTExpression functionName, IASTInitializerClause[] args) {
setFunctionNameExpression(functionName);
setArguments(args);
}
@Override
public CPPASTFunctionCallExpression copy() {
return copy(CopyStyle.withoutLocations);
}
@Override
public CPPASTFunctionCallExpression copy(CopyStyle style) {
IASTInitializerClause[] args = null;
if (fArguments.length > 0) {
args= new IASTInitializerClause[fArguments.length];
for (int i = 0; i < fArguments.length; i++) {
args[i] = fArguments[i].copy(style);
}
}
CPPASTFunctionCallExpression copy = new CPPASTFunctionCallExpression(null, args);
copy.setFunctionNameExpression(fFunctionName == null ? null : fFunctionName.copy(style));
return copy(copy, style);
}
@Override
public IASTExpression getFunctionNameExpression() {
return fFunctionName;
}
@Override
public void setFunctionNameExpression(IASTExpression expression) {
assertNotFrozen();
this.fFunctionName = (ICPPASTExpression) expression;
if (expression != null) {
expression.setParent(this);
expression.setPropertyInParent(FUNCTION_NAME);
}
}
@Override
public IASTInitializerClause[] getArguments() {
return fArguments;
}
@Override
public void setArguments(IASTInitializerClause[] arguments) {
assertNotFrozen();
if (arguments == null) {
fArguments= IASTExpression.EMPTY_EXPRESSION_ARRAY;
} else {
fArguments= arguments;
for (IASTInitializerClause arg : arguments) {
arg.setParent(this);
arg.setPropertyInParent(ARGUMENT);
}
}
}
@Override
public IASTImplicitName[] getImplicitNames() {
if (fImplicitNames == null) {
ICPPFunction overload = getOverload();
if (overload == null)
return fImplicitNames = IASTImplicitName.EMPTY_NAME_ARRAY;
if (getEvaluation() instanceof EvalTypeId) {
CPPASTImplicitName n1 = new CPPASTImplicitName(overload.getNameCharArray(), this);
n1.setOffsetAndLength((ASTNode) fFunctionName);
n1.setBinding(overload);
return fImplicitNames= new IASTImplicitName[] {n1};
}
if (overload instanceof CPPImplicitFunction) {
if (!(overload instanceof ICPPMethod) || ((ICPPMethod) overload).isImplicit()) {
return fImplicitNames = IASTImplicitName.EMPTY_NAME_ARRAY;
}
}
// Create separate implicit names for the two brackets
CPPASTImplicitName n1 = new CPPASTImplicitName(OverloadableOperator.PAREN, this);
n1.setBinding(overload);
CPPASTImplicitName n2 = new CPPASTImplicitName(OverloadableOperator.PAREN, this);
n2.setBinding(overload);
n2.setAlternate(true);
if (fArguments.length == 0) {
int idEndOffset = ((ASTNode) fFunctionName).getOffset() + ((ASTNode) fFunctionName).getLength();
try {
IToken lparen = fFunctionName.getTrailingSyntax();
IToken rparen = lparen.getNext();
if (lparen.getType() == IToken.tLPAREN) {
n1.setOffsetAndLength(idEndOffset + lparen.getOffset(), 1);
} else {
n1.setOffsetAndLength(idEndOffset + lparen.getEndOffset(), 0);
}
if (rparen.getType() == IToken.tRPAREN) {
n2.setOffsetAndLength(idEndOffset + rparen.getOffset(), 1);
} else {
n2.setOffsetAndLength(idEndOffset + rparen.getEndOffset(), 0);
}
} catch (ExpansionOverlapsBoundaryException e) {
n1.setOffsetAndLength(idEndOffset, 0);
n2.setOffsetAndLength(idEndOffset, 0);
}
} else {
n1.computeOperatorOffsets(fFunctionName, true);
n2.computeOperatorOffsets(fArguments[fArguments.length - 1], true);
}
fImplicitNames = new IASTImplicitName[] { n1, n2 };
}
return fImplicitNames;
}
@Override
public IASTImplicitDestructorName[] getImplicitDestructorNames() {
if (fImplicitDestructorNames == null) {
fImplicitDestructorNames = DestructorCallCollector.getTemporariesDestructorCalls(this);
}
return fImplicitDestructorNames;
}
@Override
public boolean accept(ASTVisitor action) {
if (action.shouldVisitExpressions) {
switch (action.visit(this)) {
case ASTVisitor.PROCESS_ABORT: return false;
case ASTVisitor.PROCESS_SKIP: return true;
default: break;
}
}
if (fFunctionName != null && !fFunctionName.accept(action))
return false;
IASTImplicitName[] implicits = action.shouldVisitImplicitNames ? getImplicitNames() : null;
if (implicits != null && implicits.length > 0 && !implicits[0].accept(action))
return false;
for (IASTInitializerClause arg : fArguments) {
if (!arg.accept(action))
return false;
}
if (implicits != null && implicits.length > 1 && !implicits[1].accept(action))
return false;
if (action.shouldVisitImplicitDestructorNames && !acceptByNodes(getImplicitDestructorNames(), action))
return false;
if (action.shouldVisitExpressions && action.leave(this) == ASTVisitor.PROCESS_ABORT)
return false;
return true;
}
@Override
public void replace(IASTNode child, IASTNode other) {
if (child == fFunctionName) {
other.setPropertyInParent(child.getPropertyInParent());
other.setParent(child.getParent());
fFunctionName = (ICPPASTExpression) other;
}
for (int i = 0; i < fArguments.length; ++i) {
if (child == fArguments[i]) {
other.setPropertyInParent(child.getPropertyInParent());
other.setParent(child.getParent());
fArguments[i] = (IASTExpression) other;
}
}
}
@Override
public ICPPFunction getOverload() {
ICPPEvaluation eval = getEvaluation();
if (eval instanceof EvalFunctionCall)
return ((EvalFunctionCall) eval).getOverload(this);
if (eval instanceof EvalTypeId) {
if (!eval.isTypeDependent()) {
IType t= getNestedType(((EvalTypeId) eval).getInputType(), TDEF | CVTYPE | REF);
if (t instanceof ICPPClassType && !(t instanceof ICPPUnknownBinding)) {
ICPPClassType cls= (ICPPClassType) t;
LookupData data= CPPSemantics.createLookupData(((IASTIdExpression) fFunctionName).getName());
try {
ICPPConstructor[] constructors = ClassTypeHelper.getConstructors(cls, data.getLookupPoint());
IBinding b= CPPSemantics.resolveFunction(data, constructors, true);
if (b instanceof ICPPFunction)
return (ICPPFunction) b;
} catch (DOMException e) {
}
}
}
}
return null;
}
@Override
public ICPPEvaluation getEvaluation() {
if (fEvaluation == null)
fEvaluation= computeEvaluation();
return fEvaluation;
}
private ICPPEvaluation computeEvaluation() {
if (fFunctionName == null || fArguments == null)
return EvalFixed.INCOMPLETE;
ICPPEvaluation conversion= checkForExplicitTypeConversion();
if (conversion != null)
return conversion;
ICPPEvaluation[] args= new ICPPEvaluation[fArguments.length + 1];
args[0]= ((ICPPEvaluationOwner) fFunctionName).getEvaluation();
for (int i = 1; i < args.length; i++) {
args[i]= ((ICPPEvaluationOwner) fArguments[i - 1]).getEvaluation();
}
ICPPEvaluation fieldOwnerEval = null;
if (fFunctionName instanceof ICPPASTFieldReference) {
ICPPASTFieldReference fieldRef = (ICPPASTFieldReference) fFunctionName;
ICPPEvaluationOwner fieldOwner = (ICPPEvaluationOwner) fieldRef.getFieldOwner();
fieldOwnerEval = fieldOwner.getEvaluation();
}
return new EvalFunctionCall(args, fieldOwnerEval, this);
}
private ICPPEvaluation checkForExplicitTypeConversion() {
if (fFunctionName instanceof IASTIdExpression) {
final IASTName name = ((IASTIdExpression) fFunctionName).getName();
IBinding b= name.resolvePreBinding();
if (b instanceof IType) {
ICPPEvaluation[] args= new ICPPEvaluation[fArguments.length];
for (int i = 0; i < args.length; i++) {
args[i]= ((ICPPEvaluationOwner) fArguments[i]).getEvaluation();
}
return new EvalTypeId((IType) b, this, false, args);
}
}
return null;
}
@Override
public IType getExpressionType() {
return getEvaluation().getType(this);
}
@Override
public ValueCategory getValueCategory() {
return getEvaluation().getValueCategory(this);
}
@Override
public boolean isLValue() {
return getValueCategory() == LVALUE;
}
}