first scanner /parser copied from the jdt java version

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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/PostfixExpression.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/PostfixExpression.java
new file mode 100644 (file)
index 0000000..97f691c
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/PostfixExpression.java
@@ -0,0 +1,77 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v0.5 
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v05.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.codegen.*;
+import net.sourceforge.phpdt.internal.compiler.lookup.*;
+
+public class PostfixExpression extends CompoundAssignment {
+
+       public PostfixExpression(Expression l, Expression e, int op, int pos) {
+               
+               super(l, e, op, pos);
+               this.sourceStart = l.sourceStart;
+               this.sourceEnd = pos;
+       }
+       
+       /**
+        * Code generation for PostfixExpression
+        *
+        * @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) {
+
+               // various scenarii are possible, setting an array reference, 
+               // a field reference, a blank final field reference, a field of an enclosing instance or 
+               // just a local variable.
+
+               int pc = codeStream.position;
+               lhs.generatePostIncrement(currentScope, codeStream, this, valueRequired);
+               if (valueRequired) {
+                       codeStream.generateImplicitConversion(implicitConversion);
+               }
+               codeStream.recordPositionsFrom(pc, this.sourceStart);
+       }
+
+       public String operatorToString() {
+               switch (operator) {
+                       case PLUS :
+                               return "++"; //$NON-NLS-1$
+                       case MINUS :
+                               return "--"; //$NON-NLS-1$
+               } 
+               return "unknown operator"; //$NON-NLS-1$
+       }
+       
+       public boolean restrainUsageToNumericTypes() {
+
+               return true;
+       }
+       
+       public String toStringExpressionNoParenthesis() {
+
+               return lhs.toStringExpression() + " " + operatorToString(); //$NON-NLS-1$
+       } 
+
+       public void traverse(IAbstractSyntaxTreeVisitor visitor, BlockScope scope) {
+
+               if (visitor.visit(this, scope)) {
+                       lhs.traverse(visitor, scope);
+               }
+               visitor.endVisit(this, scope);
+       }
+}
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