Refactored packagename to net.sourceforge.phpdt.internal.compiler.ast

[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / compiler / ast / DoubleLiteral.java

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/DoubleLiteral.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/DoubleLiteral.java
new file mode 100644 (file)
index 0000000..7095049
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/DoubleLiteral.java
@@ -0,0 +1,72 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 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 net.sourceforge.phpdt.internal.compiler.ast;
+
+import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
+import net.sourceforge.phpdt.internal.compiler.impl.Constant;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
+
+
+public class DoubleLiteral extends NumberLiteral {
+       double value;
+public DoubleLiteral(char[] token, int s, int e) {
+       super(token, s,e);
+}
+public void computeConstant() {
+
+       //the source is correctly formated so the exception should never occurs
+
+       Double computedValue;
+       try { computedValue = Double.valueOf(String.valueOf(source));}
+       catch(NumberFormatException e){return ;} //how can it happen ????
+
+       if (computedValue.doubleValue() > Double.MAX_VALUE) return ; //may be Infinity
+       if (computedValue.doubleValue() < Double.MIN_VALUE)
+       {       //only a true 0 can be made of zeros
+               //2.00000000000000000e-324 is illegal .... 
+               label :
+                       for (int i=0;i<source.length;i++)
+                       {       //it is welled formated so just test against '0' and potential . D d  
+                               switch (source[i]){
+                                       case '0' :
+                                       case '.' :
+                                       case 'd' :
+                                       case 'D' : break ;
+                                       case 'e' : 
+                                       case 'E' : break label ; //exposant are valid....!
+                                       default  : return;}}} //error
+
+       constant = Constant.fromValue(value = computedValue.doubleValue());}
+/**
+ * Code generation for the double literak
+ *
+ * @param currentScope net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
+ * @param codeStream net.sourceforge.phpdt.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_double)
+//                     codeStream.generateInlinedValue(value);
+//             else
+//                     codeStream.generateConstant(constant, implicitConversion);
+//     codeStream.recordPositionsFrom(pc, this.sourceStart);
+//}
+public TypeBinding literalType(BlockScope scope) {
+       return DoubleBinding;
+}
+public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope blockScope) {
+       visitor.visit(this, blockScope);
+       visitor.endVisit(this, blockScope);
+}
+}