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/*******************************************************************************
* Copyright (c) 2004, 2010 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 Rational Software - Initial API and implementation
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.c;
import org.eclipse.cdt.core.dom.ILinkage;
import org.eclipse.cdt.core.dom.ast.IASTCompoundStatement;
import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTFunctionDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTFunctionDefinition;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTParameterDeclaration;
import org.eclipse.cdt.core.dom.ast.IASTSimpleDeclaration;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IParameter;
import org.eclipse.cdt.core.dom.ast.IScope;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.IValue;
import org.eclipse.cdt.core.dom.ast.gnu.c.ICASTKnRFunctionDeclarator;
import org.eclipse.cdt.core.parser.util.ArrayUtil;
import org.eclipse.cdt.internal.core.dom.Linkage;
import org.eclipse.cdt.internal.core.dom.parser.ProblemBinding;
import org.eclipse.core.runtime.PlatformObject;
/**
* Represents the parameter of a function.
*/
public class CParameter extends PlatformObject implements IParameter {
public static class CParameterProblem extends ProblemBinding implements IParameter {
public CParameterProblem(IASTNode node, int id, char[] arg) {
super(node, id, arg);
}
}
private IASTName[] declarations;
private IType type = null;
public CParameter(IASTName parameterName) {
this.declarations = new IASTName[] { parameterName };
}
/*
* (non-Javadoc)
*
* @see org.eclipse.cdt.core.dom.ast.IVariable#getType()
*/
public IType getType() {
if (type == null && declarations[0].getParent() instanceof IASTDeclarator)
type = CVisitor.createType((IASTDeclarator) declarations[0].getParent());
return type;
}
private IASTName getPrimaryDeclaration() {
if (declarations != null) {
for (int i = 0; i < declarations.length && declarations[i] != null; i++) {
IASTNode node = declarations[i].getParent();
while (!(node instanceof IASTDeclaration))
node = node.getParent();
if (node.getPropertyInParent() == ICASTKnRFunctionDeclarator.FUNCTION_PARAMETER
|| node instanceof IASTFunctionDefinition) {
return declarations[i];
}
}
return declarations[0];
}
return null;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.cdt.core.dom.ast.IBinding#getName()
*/
public String getName() {
IASTName name = getPrimaryDeclaration();
if (name != null)
return name.toString();
return CVisitor.EMPTY_STRING;
}
public char[] getNameCharArray() {
IASTName name = getPrimaryDeclaration();
if (name != null)
return name.toCharArray();
return CVisitor.EMPTY_CHAR_ARRAY;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.cdt.core.dom.ast.IBinding#getScope()
*/
public IScope getScope() {
// IASTParameterDeclaration or IASTSimpleDeclaration
for (IASTName declaration : declarations) {
IASTNode parent = declaration.getParent();
if (parent instanceof ICASTKnRFunctionDeclarator) {
parent = parent.getParent();
return ((IASTCompoundStatement) ((IASTFunctionDefinition) parent).getBody()).getScope();
}
IASTNode fdtorNode = parent.getParent().getParent();
if (fdtorNode instanceof IASTFunctionDeclarator) {
IASTFunctionDeclarator fdtor = (IASTFunctionDeclarator) fdtorNode;
parent = fdtor.getParent();
if (parent instanceof IASTFunctionDefinition) {
return ((IASTCompoundStatement) ((IASTFunctionDefinition) parent).getBody()).getScope();
}
}
}
// TODO: if not definition, find definition
return null;
}
/**
* @param name
*/
public void addDeclaration(IASTName name) {
if (name != null && name.isActive())
declarations = (IASTName[]) ArrayUtil.append(IASTName.class, declarations, name);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.cdt.core.dom.ast.IVariable#isStatic()
*/
public boolean isStatic() {
return false;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.cdt.core.dom.ast.IVariable#isExtern()
*/
public boolean isExtern() {
return false;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.cdt.core.dom.ast.IVariable#isAuto()
*/
public boolean isAuto() {
return hasStorageClass(IASTDeclSpecifier.sc_auto);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.cdt.core.dom.ast.IVariable#isRegister()
*/
public boolean isRegister() {
return hasStorageClass(IASTDeclSpecifier.sc_register);
}
public boolean hasStorageClass(int storage) {
if (declarations == null)
return false;
for (int i = 0; i < declarations.length && declarations[i] != null; i++) {
IASTNode parent = declarations[i].getParent();
while (!(parent instanceof IASTParameterDeclaration) && !(parent instanceof IASTDeclaration))
parent = parent.getParent();
IASTDeclSpecifier declSpec = null;
if (parent instanceof IASTSimpleDeclaration) {
declSpec = ((IASTSimpleDeclaration) parent).getDeclSpecifier();
} else if (parent instanceof IASTParameterDeclaration) {
declSpec = ((IASTParameterDeclaration) parent).getDeclSpecifier();
}
if (declSpec != null)
return declSpec.getStorageClass() == storage;
}
return false;
}
public ILinkage getLinkage() {
return Linkage.C_LINKAGE;
}
public IBinding getOwner() {
if (declarations == null || declarations.length == 0)
return null;
return CVisitor.findEnclosingFunction(declarations[0]);
}
public IValue getInitialValue() {
return null;
}
}
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