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/*******************************************************************************
* Copyright (c) 2000, 2016 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.eval;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.ClassFile;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException;
import org.eclipse.jdt.internal.compiler.env.IBinaryType;
import org.eclipse.jdt.internal.compiler.env.INameEnvironment;
import org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
/**
* An environment that wraps the client's name environment.
* This wrapper always considers the wrapped environment then if the name is
* not found, it search in the code snippet support. This includes the super class
* org.eclipse.jdt.internal.eval.target.CodeSnippet as well as the global variable classes.
*/
public class CodeSnippetEnvironment implements INameEnvironment, EvaluationConstants {
INameEnvironment env;
EvaluationContext context;
/**
* Creates a new wrapper for the given environment.
*/
public CodeSnippetEnvironment(INameEnvironment env, EvaluationContext context) {
this.env = env;
this.context = context;
}
/**
* @see INameEnvironment#findType(char[][])
*/
@Override
public NameEnvironmentAnswer findType(char[][] compoundTypeName) {
NameEnvironmentAnswer result = this.env.findType(compoundTypeName);
if (result != null) {
return result;
}
if (CharOperation.equals(compoundTypeName, ROOT_COMPOUND_NAME)) {
IBinaryType binary = this.context.getRootCodeSnippetBinary();
if (binary == null) {
return null;
} else {
return new NameEnvironmentAnswer(binary, null /*no access restriction*/);
}
}
VariablesInfo installedVars = this.context.installedVars;
ClassFile[] classFiles = installedVars.classFiles;
for (int i = 0; i < classFiles.length; i++) {
ClassFile classFile = classFiles[i];
if (CharOperation.equals(compoundTypeName, classFile.getCompoundName())) {
ClassFileReader binary = null;
try {
binary = new ClassFileReader(classFile.getBytes(), null);
} catch (ClassFormatException e) {
e.printStackTrace(); // Should never happen since we compiled this type
return null;
}
return new NameEnvironmentAnswer(binary, null /*no access restriction*/);
}
}
return null;
}
/**
* @see INameEnvironment#findType(char[], char[][])
*/
@Override
public NameEnvironmentAnswer findType(char[] typeName, char[][] packageName) {
NameEnvironmentAnswer result = this.env.findType(typeName, packageName);
if (result != null) {
return result;
}
return findType(CharOperation.arrayConcat(packageName, typeName));
}
/**
* @see INameEnvironment#isPackage(char[][], char[])
*/
@Override
public boolean isPackage(char[][] parentPackageName, char[] packageName) {
return this.env.isPackage(parentPackageName, packageName);
}
@Override
public void cleanup() {
this.env.cleanup();
}
}
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