src/org/eclipse/jdt/internal/compiler/ast/Literal.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2004 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.jdt.internal.compiler.ast;
  12
  13 import org.eclipse.jdt.internal.compiler.flow.FlowContext;
  14 import org.eclipse.jdt.internal.compiler.flow.FlowInfo;
  15 import org.eclipse.jdt.internal.compiler.impl.*;
  16 import org.eclipse.jdt.internal.compiler.lookup.*;
  17
  18 public abstract class Literal extends Expression {
  19
  20         public Literal(int s, int e) {
  21
  22                 sourceStart = s;
  23                 sourceEnd = e;
  24         }
  25
  26         public FlowInfo analyseCode(
  27                 BlockScope currentScope,
  28                 FlowContext flowContext,
  29                 FlowInfo flowInfo) {
  30
  31                 return flowInfo;
  32         }
  33
  34         public abstract void computeConstant();
  35
  36         public abstract TypeBinding literalType(BlockScope scope);
  37
  38         public StringBuffer printExpression(int indent, StringBuffer output){
  39
  40                 return output.append(source());
  41          }
  42
  43         public TypeBinding resolveType(BlockScope scope) {
  44                 // compute the real value, which must range its type's range
  45                 this.resolvedType = literalType(scope);
  46
  47                 // in case of error, constant did remain null
  48                 computeConstant();
  49                 if (constant == null) {
  50                         scope.problemReporter().constantOutOfRange(this, this.resolvedType);
  51                         constant = Constant.NotAConstant;
  52                 }
  53                 return this.resolvedType;
  54         }
  55
  56         public abstract char[] source();
  57 }