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/*******************************************************************************
* Copyright (c) 2006, 2015 Wind River Systems, Inc. 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:
* Markus Schorn - initial API and implementation
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser;
import org.eclipse.cdt.core.dom.ast.IASTFileLocation;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IFunction;
import org.eclipse.cdt.core.dom.ast.IScope;
import org.eclipse.cdt.core.index.IIndexBinding;
import org.eclipse.cdt.core.index.IIndexFileLocation;
import org.eclipse.cdt.core.index.IIndexFileSet;
import org.eclipse.cdt.core.index.IndexFilter;
import org.eclipse.cdt.core.index.IndexLocationFactory;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.cdt.internal.core.dom.parser.c.ICInternalBinding;
import org.eclipse.cdt.internal.core.dom.parser.c.ICInternalFunction;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPInternalBinding;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPInternalFunction;
import org.eclipse.cdt.internal.core.index.IIndexFragment;
import org.eclipse.cdt.internal.core.index.IndexFileSet;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMBinding;
import org.eclipse.core.runtime.CoreException;
/**
* Access to methods on scopes and bindings internal to the parser.
*/
public class ASTInternal {
/**
* Returns the definition for an AST binding. Calling this method for an index binding
* is considered an error.
*
* @param binding the binding to get the definition for
* @return the definition node for the binding or {@code null}
*/
public static IASTNode getDefinitionOfBinding(IBinding binding) {
if (binding instanceof ICPPInternalBinding) {
return ((ICPPInternalBinding) binding).getDefinition();
}
if (binding instanceof ICInternalBinding) {
return ((ICInternalBinding) binding).getDefinition();
}
assert false;
return null;
}
/**
* Returns the declarations for an AST binding. Calling this method for an index binding
* is considered an error.
*
* @param binding the binding to get the declarations for
* @return the declaration nodes for the binding, possibly none
*/
public static IASTNode[] getDeclarationsOfBinding(IBinding binding) {
if (binding instanceof ICPPInternalBinding) {
return ((ICPPInternalBinding) binding).getDeclarations();
}
if (binding instanceof ICInternalBinding) {
return ((ICInternalBinding) binding).getDeclarations();
}
assert false;
return IASTNode.EMPTY_NODE_ARRAY;
}
public static IASTNode getPhysicalNodeOfScope(IScope scope) {
if (scope instanceof IASTInternalScope) {
return ((IASTInternalScope) scope).getPhysicalNode();
}
return null;
}
public static void addBinding(IScope scope, IBinding binding) {
if (scope instanceof IASTInternalScope) {
((IASTInternalScope) scope).addBinding(binding);
}
}
public static void addName(IScope scope, IASTName name) {
if (scope instanceof IASTInternalScope) {
((IASTInternalScope) scope).addName(name);
}
}
public static boolean isStatic(IFunction func, boolean resolveAll) {
if (func instanceof ICPPInternalFunction) {
return ((ICPPInternalFunction) func).isStatic(resolveAll);
}
if (func instanceof ICInternalFunction) {
return ((ICInternalFunction) func).isStatic(resolveAll);
}
return func.isStatic();
}
public static void setFullyResolved(IBinding binding, boolean val) {
if (binding instanceof ICInternalFunction) {
((ICInternalFunction) binding).setFullyResolved(true);
}
}
public static IASTNode getDeclaredInSourceFileOnly(IIndexFragment forFragment, IBinding binding,
boolean requireDefinition, PDOMBinding glob) {
IASTNode result = getDeclaredInSourceFileOnly(binding, requireDefinition);
if (result == null)
return null;
if (requireDefinition && glob != null) {
try {
if (glob.hasDeclaration())
return null;
} catch (CoreException e) {
}
}
IASTTranslationUnit tu= result.getTranslationUnit();
if (tu != null) {
if (tu.getIndexFileSet().containsNonLocalDeclaration(binding, forFragment))
return null;
}
return result;
}
public static IASTNode getDeclaredInSourceFileOnly(IBinding binding) {
IASTNode result = getDeclaredInSourceFileOnly(binding, false);
if (result == null)
return null;
IASTTranslationUnit ast= result.getTranslationUnit();
if (ast != null) {
ITranslationUnit tu = ast.getOriginatingTranslationUnit();
if (tu == null)
return null;
IIndexFileLocation location = IndexLocationFactory.getIFL(tu);
IIndexFileSet fileSet = ast.getIndexFileSet();
if (!(fileSet instanceof IndexFileSet))
return null;
if (((IndexFileSet) fileSet).containsNonLocalDeclaration(binding, location))
return null;
}
return result;
}
private static IASTNode getDeclaredInSourceFileOnly(IBinding binding, boolean requireDefinition) {
IASTNode[] decls;
IASTNode def;
if (binding instanceof ICPPInternalBinding) {
ICPPInternalBinding ib= (ICPPInternalBinding) binding;
decls= ib.getDeclarations();
def= ib.getDefinition();
} else if (binding instanceof ICInternalBinding) {
ICInternalBinding ib= (ICInternalBinding) binding;
decls= ib.getDeclarations();
def= ib.getDefinition();
} else {
return null;
}
if (requireDefinition && def == null) {
return null;
}
IASTNode result= null;
if (def != null) {
if (!isPartOfSource(def))
return null;
result= def;
}
if (decls != null) {
for (final IASTNode node : decls) {
if (node != null) {
if (!isPartOfSource(node))
return null;
if ((result= resolveConflict(result, node)) == null)
return null;
}
}
}
return result;
}
private static boolean isPartOfSource(IASTNode decl) {
return decl instanceof ASTNode && ((ASTNode) decl).isPartOfSourceFile();
}
private static IASTNode resolveConflict(IASTNode n1, IASTNode n2) {
if (n1 == null)
return n2;
IASTFileLocation loc1= n1.getFileLocation();
if (loc1 == null)
return n2;
IASTFileLocation loc2= n2.getFileLocation();
if (loc2 != null && loc1.getContextInclusionStatement() != loc2.getContextInclusionStatement())
return null;
return n1;
}
public static IASTNode getDeclaredInOneFileOnly(IBinding binding) {
IASTNode[] decls;
IASTNode def;
if (binding instanceof ICPPInternalBinding) {
ICPPInternalBinding ib= (ICPPInternalBinding) binding;
decls= ib.getDeclarations();
def= ib.getDefinition();
} else if (binding instanceof ICInternalBinding) {
ICInternalBinding ib= (ICInternalBinding) binding;
decls= ib.getDeclarations();
def= ib.getDefinition();
} else {
return null;
}
IASTNode result= null;
if (def != null) {
result= def;
}
if (decls != null) {
for (final IASTNode node : decls) {
if (node != null) {
if ((result= resolveConflict(result, node)) == null)
return null;
}
}
}
return result;
}
public static void addDeclaration(IBinding b, IASTNode declaration) {
if (b instanceof ICPPInternalBinding && declaration.isActive()) {
((ICPPInternalBinding) b).addDeclaration(declaration);
}
}
public static void addDefinition(IBinding b, IASTNode declaration) {
if (b instanceof ICPPInternalBinding && declaration.isActive()) {
((ICPPInternalBinding) b).addDefinition(declaration);
}
}
public static boolean hasDeclaration(IBinding binding) {
if (binding instanceof ICPPInternalBinding) {
ICPPInternalBinding internal= (ICPPInternalBinding) binding;
if (internal.getDefinition() != null)
return true;
IASTNode[] decls= internal.getDeclarations();
return decls != null && decls.length > 0 && decls[0] != null;
}
if (binding instanceof IIndexBinding) {
try {
return IndexFilter.ALL_DECLARED.acceptBinding(binding);
} catch (CoreException e) {
}
return false;
}
return binding != null;
}
}
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