+++ /dev/null
-/*******************************************************************************
- * 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.impl.*;
-import org.eclipse.jdt.internal.compiler.codegen.*;
-import org.eclipse.jdt.internal.compiler.lookup.*;
-
-public class CharLiteral extends NumberLiteral {
- char value;
-public CharLiteral(char[] token, int s, int e) {
- super(token, s, e);
- computeValue();
-}
-public void computeConstant() {
- //The source is a char[3] first and last char are '
- //This is true for both regular char AND unicode char
- //BUT not for escape char like '\b' which are char[4]....
-
- constant = Constant.fromValue(value);
-}
-private void computeValue() {
- //The source is a char[3] first and last char are '
- //This is true for both regular char AND unicode char
- //BUT not for escape char like '\b' which are char[4]....
-
- if ((value = source[1]) != '\\')
- return;
- char digit;
- switch (digit = source[2]) {
- case 'b' :
- value = '\b';
- break;
- case 't' :
- value = '\t';
- break;
- case 'n' :
- value = '\n';
- break;
- case 'f' :
- value = '\f';
- break;
- case 'r' :
- value = '\r';
- break;
- case '\"' :
- value = '\"';
- break;
- case '\'' :
- value = '\'';
- break;
- case '\\' :
- value = '\\';
- break;
- default : //octal (well-formed: ended by a ' )
- int number = Character.getNumericValue(digit);
- if ((digit = source[3]) != '\'')
- number = (number * 8) + Character.getNumericValue(digit);
- else {
- constant = Constant.fromValue(value = (char) number);
- break;
- }
- if ((digit = source[4]) != '\'')
- number = (number * 8) + Character.getNumericValue(digit);
- value = (char) number;
- break;
- }
-}
-/**
- * CharLiteral code generation
- *
- * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
- * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
- * @param valueRequired boolean
- */
-public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
- int pc = codeStream.position;
- if (valueRequired)
- if ((implicitConversion >> 4) == T_char)
- codeStream.generateInlinedValue(value);
- else
- codeStream.generateConstant(constant, implicitConversion);
- codeStream.recordPositionsFrom(pc, this.sourceStart);
-}
-public TypeBinding literalType(BlockScope scope) {
- return CharBinding;
-}
-public void traverse(ASTVisitor visitor, BlockScope blockScope) {
- visitor.visit(this, blockScope);
- visitor.endVisit(this, blockScope);
-}
-}