+++ /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 FloatLiteral extends NumberLiteral {
- float value;
- final static float Float_MIN_VALUE = Float.intBitsToFloat(1); // work-around VAJ problem 1F6IGUU
-public FloatLiteral(char[] token, int s, int e) {
- super(token, s,e);
-}
-public void computeConstant() {
-
- //the source is correctly formated so the exception should never occurs
-
- Float computedValue;
- try {
- computedValue = Float.valueOf(String.valueOf(source));
- } catch (NumberFormatException e) {
- return;
- }
-
- if (computedValue.doubleValue() > Float.MAX_VALUE){
- return; //may be Infinity
- }
- if (computedValue.floatValue() < Float_MIN_VALUE){
- // see 1F6IGUU
- //only a true 0 can be made of zeros
- //1.00000000e-46f is illegal ....
- label : for (int i = 0; i < source.length; i++) {
- switch (source[i]) {
- case '.' :
- case 'f' :
- case 'F' :
- case '0' :
- break;
- case 'e' :
- case 'E' :
- break label; //exposant are valid !....
- default :
- return; //error
- }
- }
- }
- constant = Constant.fromValue(value = computedValue.floatValue());
-}
-/**
- * Code generation for float literal
- *
- * @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_float)
- codeStream.generateInlinedValue(value);
- else
- codeStream.generateConstant(constant, implicitConversion);
- codeStream.recordPositionsFrom(pc, this.sourceStart);
-}
-public TypeBinding literalType(BlockScope scope) {
- return FloatBinding;
-}
-public void traverse(ASTVisitor visitor, BlockScope blockScope) {
- visitor.visit(this, blockScope);
- visitor.endVisit(this, blockScope);
-}
-}