| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.compiler.ast; |
| |
| import org.eclipse.jdt.internal.compiler.ASTVisitor; |
| import org.eclipse.jdt.internal.compiler.codegen.CodeStream; |
| import org.eclipse.jdt.internal.compiler.impl.Constant; |
| import org.eclipse.jdt.internal.compiler.lookup.BlockScope; |
| import org.eclipse.jdt.internal.compiler.lookup.TypeBinding; |
| |
| public class StringLiteral extends Literal { |
| |
| char[] source; |
| |
| public StringLiteral(char[] token, int s, int e) { |
| |
| this(s,e); |
| source = token; |
| } |
| |
| public StringLiteral(int s, int e) { |
| |
| super(s,e); |
| } |
| |
| public void computeConstant() { |
| |
| constant = Constant.fromValue(String.valueOf(source)); |
| } |
| |
| public ExtendedStringLiteral extendWith(CharLiteral lit){ |
| |
| //add the lit source to mine, just as if it was mine |
| return new ExtendedStringLiteral(this,lit); |
| } |
| |
| public ExtendedStringLiteral extendWith(StringLiteral lit){ |
| |
| //add the lit source to mine, just as if it was mine |
| return new ExtendedStringLiteral(this,lit); |
| } |
| |
| /** |
| * Add the lit source to mine, just as if it was mine |
| */ |
| public StringLiteralConcatenation extendsWith(StringLiteral lit) { |
| return new StringLiteralConcatenation(this, lit); |
| } |
| /** |
| * Code generation for string literal |
| */ |
| public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) { |
| |
| int pc = codeStream.position; |
| if (valueRequired) |
| codeStream.ldc(constant.stringValue()); |
| codeStream.recordPositionsFrom(pc, this.sourceStart); |
| } |
| |
| public TypeBinding literalType(BlockScope scope) { |
| |
| return scope.getJavaLangString(); |
| } |
| |
| public StringBuffer printExpression(int indent, StringBuffer output) { |
| |
| // handle some special char..... |
| output.append('\"'); |
| for (int i = 0; i < source.length; i++) { |
| switch (source[i]) { |
| case '\b' : |
| output.append("\\b"); //$NON-NLS-1$ |
| break; |
| case '\t' : |
| output.append("\\t"); //$NON-NLS-1$ |
| break; |
| case '\n' : |
| output.append("\\n"); //$NON-NLS-1$ |
| break; |
| case '\f' : |
| output.append("\\f"); //$NON-NLS-1$ |
| break; |
| case '\r' : |
| output.append("\\r"); //$NON-NLS-1$ |
| break; |
| case '\"' : |
| output.append("\\\""); //$NON-NLS-1$ |
| break; |
| case '\'' : |
| output.append("\\'"); //$NON-NLS-1$ |
| break; |
| case '\\' : //take care not to display the escape as a potential real char |
| output.append("\\\\"); //$NON-NLS-1$ |
| break; |
| default : |
| output.append(source[i]); |
| } |
| } |
| output.append('\"'); |
| return output; |
| } |
| |
| public char[] source() { |
| |
| return source; |
| } |
| |
| public void traverse(ASTVisitor visitor, BlockScope scope) { |
| visitor.visit(this, scope); |
| visitor.endVisit(this, scope); |
| } |
| } |