--- /dev/null
+/*******************************************************************************
+ * 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.impl.DoubleConstant;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
+
+
+public class IntLiteral extends NumberLiteral {
+ public int value;
+
+ public static final IntLiteral
+ One = new IntLiteral(new char[]{'1'},0,0,1);//used for ++ and --
+
+ static final Constant FORMAT_ERROR = new DoubleConstant(1.0/0.0); // NaN;
+public IntLiteral(char[] token, int s, int e) {
+ super(token, s,e);
+}
+public IntLiteral(char[] token, int s,int e, int value) {
+ this(token, s,e);
+ this.value = value;
+}
+public IntLiteral(int intValue) {
+ //special optimized constructor : the cst is the argument
+
+ //value that should not be used
+ // tokens = null ;
+ // sourceStart = 0;
+ // sourceEnd = 0;
+ super(null,0,0);
+ constant = Constant.fromValue(intValue);
+ value = intValue;
+
+}
+public void computeConstant() {
+ //a special constant is use for the potential Integer.MAX_VALUE+1
+ //which is legal if used with a - as prefix....cool....
+ //notice that Integer.MIN_VALUE == -2147483648
+
+ long MAX = Integer.MAX_VALUE;
+ if (this == One) { constant = Constant.One; return ;}
+
+ int length = source.length;
+ long computedValue = 0L;
+ if (source[0] == '0')
+ { MAX = 0xFFFFFFFFL ; //a long in order to be positive !
+ if (length == 1) { constant = Constant.fromValue(0); return ;}
+ final int shift,radix;
+ int j ;
+ if ( (source[1] == 'x') | (source[1] == 'X') )
+ { shift = 4 ; j = 2; radix = 16;}
+ else
+ { shift = 3 ; j = 1; radix = 8;}
+ while (source[j]=='0')
+ { j++; //jump over redondant zero
+ if (j == length)
+ { //watch for 000000000000000000 :-(
+ constant = Constant.fromValue(value = (int)computedValue);
+ return ;}}
+
+ while (j<length)
+ { int digitValue ;
+ if ((digitValue = Character.digit(source[j++],radix)) < 0 )
+ { constant = FORMAT_ERROR; return ;}
+ computedValue = (computedValue<<shift) | digitValue ;
+ if (computedValue > MAX) return /*constant stays null*/ ;}}
+ else
+ { //-----------regular case : radix = 10-----------
+ for (int i = 0 ; i < length;i++)
+ { int digitValue ;
+ if ((digitValue = Character.digit(source[i],10)) < 0 )
+ { constant = FORMAT_ERROR; return ;}
+ computedValue = 10*computedValue + digitValue;
+ if (computedValue > MAX) return /*constant stays null*/ ; }}
+
+ constant = Constant.fromValue(value = (int)computedValue);
+
+}
+/**
+ * Code generation for int literal
+ *
+ * @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_int)
+// codeStream.generateInlinedValue(value);
+// else
+// codeStream.generateConstant(constant, implicitConversion);
+// codeStream.recordPositionsFrom(pc, this.sourceStart);
+//}
+public TypeBinding literalType(BlockScope scope) {
+ return IntBinding;
+}
+public final boolean mayRepresentMIN_VALUE(){
+ //a special autorized int literral is 2147483648
+ //which is ONE over the limit. This special case
+ //only is used in combinaison with - to denote
+ //the minimal value of int -2147483648
+
+ return ((source.length == 10) &&
+ (source[0] == '2') &&
+ (source[1] == '1') &&
+ (source[2] == '4') &&
+ (source[3] == '7') &&
+ (source[4] == '4') &&
+ (source[5] == '8') &&
+ (source[6] == '3') &&
+ (source[7] == '6') &&
+ (source[8] == '4') &&
+ (source[9] == '8'));}
+public TypeBinding resolveType(BlockScope scope) {
+ // the format may be incorrect while the scanner could detect
+ // such an error only on painfull tests...easier and faster here
+
+ TypeBinding tb = super.resolveType(scope);
+ if (constant == FORMAT_ERROR) {
+ constant = NotAConstant;
+ scope.problemReporter().constantOutOfFormat(this);
+ this.resolvedType = null;
+ return null;
+ }
+ return tb;
+}
+public String toStringExpression(){
+
+ if (source == null)
+ /* special optimized IntLiteral that are created by the compiler */
+ return String.valueOf(value);
+
+ return super.toStringExpression();}
+public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope scope) {
+ visitor.visit(this, scope);
+ visitor.endVisit(this, scope);
+}
+}
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