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/*******************************************************************************
* Copyright (c) 2002, 2013 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.jdt.internal.core.util;
import java.util.Locale;
import java.util.Map;
import org.eclipse.jdt.core.compiler.CategorizedProblem;
import org.eclipse.jdt.internal.compiler.CompilationResult;
import org.eclipse.jdt.internal.compiler.DefaultErrorHandlingPolicies;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration;
import org.eclipse.jdt.internal.compiler.ast.Expression;
import org.eclipse.jdt.internal.compiler.batch.CompilationUnit;
import org.eclipse.jdt.internal.compiler.env.ICompilationUnit;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import org.eclipse.jdt.internal.compiler.problem.DefaultProblemFactory;
import org.eclipse.jdt.internal.compiler.problem.ProblemReporter;
/**
* Utility class to parse different code snippets
*/
public class CodeSnippetParsingUtil {
public RecordedParsingInformation recordedParsingInformation;
public boolean ignoreMethodBodies;
public CodeSnippetParsingUtil(boolean ignoreMethodBodies) {
this.ignoreMethodBodies = ignoreMethodBodies;
}
public CodeSnippetParsingUtil() {
this(false);
}
private RecordedParsingInformation getRecordedParsingInformation(CompilationResult compilationResult, int[][] commentPositions) {
int problemsCount = compilationResult.problemCount;
CategorizedProblem[] problems = null;
if (problemsCount != 0) {
final CategorizedProblem[] compilationResultProblems = compilationResult.problems;
if (compilationResultProblems.length == problemsCount) {
problems = compilationResultProblems;
} else {
System.arraycopy(compilationResultProblems, 0, (problems = new CategorizedProblem[problemsCount]), 0, problemsCount);
}
}
return new RecordedParsingInformation(problems, compilationResult.getLineSeparatorPositions(), commentPositions);
}
public ASTNode[] parseClassBodyDeclarations(char[] source, Map settings, boolean recordParsingInformation) {
return parseClassBodyDeclarations(source, 0, source.length, settings, recordParsingInformation, false);
}
public ASTNode[] parseClassBodyDeclarations(
char[] source,
int offset,
int length,
Map settings,
boolean recordParsingInformation,
boolean enabledStatementRecovery) {
if (source == null) {
throw new IllegalArgumentException();
}
CompilerOptions compilerOptions = new CompilerOptions(settings);
compilerOptions.ignoreMethodBodies = this.ignoreMethodBodies;
final ProblemReporter problemReporter = new ProblemReporter(
DefaultErrorHandlingPolicies.proceedWithAllProblems(),
compilerOptions,
new DefaultProblemFactory(Locale.getDefault()));
CommentRecorderParser parser = new CommentRecorderParser(problemReporter, false);
parser.setMethodsFullRecovery(false);
parser.setStatementsRecovery(enabledStatementRecovery);
ICompilationUnit sourceUnit =
new CompilationUnit(
source,
"", //$NON-NLS-1$
compilerOptions.defaultEncoding);
CompilationResult compilationResult = new CompilationResult(sourceUnit, 0, 0, compilerOptions.maxProblemsPerUnit);
final CompilationUnitDeclaration compilationUnitDeclaration = new CompilationUnitDeclaration(problemReporter, compilationResult, source.length);
ASTNode[] result = parser.parseClassBodyDeclarations(source, offset, length, compilationUnitDeclaration);
if (recordParsingInformation) {
this.recordedParsingInformation = getRecordedParsingInformation(compilationResult, compilationUnitDeclaration.comments);
}
return result;
}
public CompilationUnitDeclaration parseCompilationUnit(char[] source, Map settings, boolean recordParsingInformation) {
if (source == null) {
throw new IllegalArgumentException();
}
CompilerOptions compilerOptions = new CompilerOptions(settings);
compilerOptions.ignoreMethodBodies = this.ignoreMethodBodies;
CommentRecorderParser parser =
new CommentRecorderParser(
new ProblemReporter(
DefaultErrorHandlingPolicies.proceedWithAllProblems(),
compilerOptions,
new DefaultProblemFactory(Locale.getDefault())),
false);
ICompilationUnit sourceUnit =
new CompilationUnit(
source,
"", //$NON-NLS-1$
compilerOptions.defaultEncoding);
final CompilationResult compilationResult = new CompilationResult(sourceUnit, 0, 0, compilerOptions.maxProblemsPerUnit);
CompilationUnitDeclaration compilationUnitDeclaration = parser.dietParse(sourceUnit, compilationResult);
if (recordParsingInformation) {
this.recordedParsingInformation = getRecordedParsingInformation(compilationResult, compilationUnitDeclaration.comments);
}
if (compilationUnitDeclaration.ignoreMethodBodies) {
compilationUnitDeclaration.ignoreFurtherInvestigation = true;
// if initial diet parse did not work, no need to dig into method bodies.
return compilationUnitDeclaration;
}
//fill the methods bodies in order for the code to be generated
//real parse of the method....
parser.scanner.setSource(compilationResult);
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration[] types = compilationUnitDeclaration.types;
if (types != null) {
for (int i = 0, length = types.length; i < length; i++) {
types[i].parseMethods(parser, compilationUnitDeclaration);
}
}
if (recordParsingInformation) {
this.recordedParsingInformation.updateRecordedParsingInformation(compilationResult);
}
return compilationUnitDeclaration;
}
public Expression parseExpression(char[] source, Map settings, boolean recordParsingInformation) {
return parseExpression(source, 0, source.length, settings, recordParsingInformation);
}
public Expression parseExpression(char[] source, int offset, int length, Map settings, boolean recordParsingInformation) {
if (source == null) {
throw new IllegalArgumentException();
}
CompilerOptions compilerOptions = new CompilerOptions(settings);
// in this case we don't want to ignore method bodies since we are parsing only an expression
final ProblemReporter problemReporter = new ProblemReporter(
DefaultErrorHandlingPolicies.proceedWithAllProblems(),
compilerOptions,
new DefaultProblemFactory(Locale.getDefault()));
CommentRecorderParser parser = new CommentRecorderParser(problemReporter, false);
ICompilationUnit sourceUnit =
new CompilationUnit(
source,
"", //$NON-NLS-1$
compilerOptions.defaultEncoding);
CompilationResult compilationResult = new CompilationResult(sourceUnit, 0, 0, compilerOptions.maxProblemsPerUnit);
CompilationUnitDeclaration unit = new CompilationUnitDeclaration(problemReporter, compilationResult, source.length);
Expression result = parser.parseExpression(source, offset, length, unit, true /* record line separators */);
if (recordParsingInformation) {
this.recordedParsingInformation = getRecordedParsingInformation(compilationResult, unit.comments);
}
return result;
}
public ConstructorDeclaration parseStatements(char[] source, Map settings, boolean recordParsingInformation, boolean enabledStatementRecovery) {
return parseStatements(source, 0, source.length, settings, recordParsingInformation, enabledStatementRecovery);
}
public ConstructorDeclaration parseStatements(
char[] source,
int offset,
int length,
Map settings,
boolean recordParsingInformation,
boolean enabledStatementRecovery) {
if (source == null) {
throw new IllegalArgumentException();
}
CompilerOptions compilerOptions = new CompilerOptions(settings);
// in this case we don't want to ignore method bodies since we are parsing only statements
final ProblemReporter problemReporter = new ProblemReporter(
DefaultErrorHandlingPolicies.proceedWithAllProblems(),
compilerOptions,
new DefaultProblemFactory(Locale.getDefault()));
CommentRecorderParser parser = new CommentRecorderParser(problemReporter, false);
parser.setMethodsFullRecovery(false);
parser.setStatementsRecovery(enabledStatementRecovery);
ICompilationUnit sourceUnit =
new CompilationUnit(
source,
"", //$NON-NLS-1$
compilerOptions.defaultEncoding);
final CompilationResult compilationResult = new CompilationResult(sourceUnit, 0, 0, compilerOptions.maxProblemsPerUnit);
CompilationUnitDeclaration compilationUnitDeclaration = new CompilationUnitDeclaration(problemReporter, compilationResult, length);
ConstructorDeclaration constructorDeclaration = new ConstructorDeclaration(compilationResult);
constructorDeclaration.sourceEnd = -1;
constructorDeclaration.declarationSourceEnd = offset + length - 1;
constructorDeclaration.bodyStart = offset;
constructorDeclaration.bodyEnd = offset + length - 1;
parser.scanner.setSource(compilationResult);
parser.scanner.resetTo(offset, offset + length);
parser.parse(constructorDeclaration, compilationUnitDeclaration, true);
if (recordParsingInformation) {
this.recordedParsingInformation = getRecordedParsingInformation(compilationResult, compilationUnitDeclaration.comments);
}
return constructorDeclaration;
}
}
