/*******************************************************************************
* Copyright (c) 2005, 2007 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.wst.jsdt.internal.core.interpret;
import java.io.File;
import java.io.IOException;
import java.util.Locale;
import java.util.Map;
import org.eclipse.wst.jsdt.internal.compiler.CompilationResult;
import org.eclipse.wst.jsdt.internal.compiler.DefaultErrorHandlingPolicies;
import org.eclipse.wst.jsdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.wst.jsdt.internal.compiler.batch.CompilationUnit;
import org.eclipse.wst.jsdt.internal.compiler.env.ICompilationUnit;
import org.eclipse.wst.jsdt.internal.compiler.impl.CompilerOptions;
import org.eclipse.wst.jsdt.internal.compiler.parser.Parser;
import org.eclipse.wst.jsdt.internal.compiler.problem.DefaultProblemFactory;
import org.eclipse.wst.jsdt.internal.compiler.problem.ProblemReporter;
import org.eclipse.wst.jsdt.internal.compiler.util.Util;
public class Interpreter {
public static InterpreterResult interpet(String code, InterpreterContext context)
{
InterpretedScript parsedUnit = parseString(code);
InterpreterResult result = interpret(parsedUnit.compilationUnit, context);
parsedUnit.compilationUnit.cleanUp();
return result;
}
public static InterpretedScript parseFile(String fileName) {
File file = new File(fileName);
InterpretedScript unit=null;
if (file.exists())
{
try {
byte[] fileByteContent = Util.getFileByteContent(file);
char[] chars = Util.bytesToChar(fileByteContent, Util.UTF_8);
unit=parse(chars);
} catch (IOException e) {
}
}
return unit;
}
public static InterpretedScript parseString(String code) {
char[] source = code.toCharArray();
return parse(source);
}
private static InterpretedScript parse(char[] source) {
Map options =new CompilerOptions().getMap();
options.put(CompilerOptions.OPTION_ReportUnusedLocal, CompilerOptions.IGNORE);
options.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_3);
options.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_3);
options.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_1);
CompilerOptions compilerOptions =new CompilerOptions(options);
Parser parser =
new Parser(
new ProblemReporter(
DefaultErrorHandlingPolicies.exitAfterAllProblems(),
compilerOptions,
new DefaultProblemFactory(Locale.getDefault())),
true);
ICompilationUnit sourceUnit = new CompilationUnit(source, "interpreted", null); //$NON-NLS-1$
CompilationResult compilationUnitResult = new CompilationResult(sourceUnit, 0, 0, compilerOptions.maxProblemsPerUnit);
CompilationUnitDeclaration parsedUnit = parser.parse(sourceUnit, compilationUnitResult);
int[] lineEnds = parser.scanner.lineEnds;
return new InterpretedScript(parsedUnit,lineEnds,parser.scanner.linePtr);
}
public static InterpreterResult interpret(CompilationUnitDeclaration ast, InterpreterContext context)
{
InterpreterEngine engine = new InterpreterEngine(context);
return engine.interpret(ast);
}
}