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

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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/Statement.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/Statement.java
index ff647a4..08b01e4 100644 (file)
--- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/Statement.java
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/Statement.java
@@ -1,27 +1,75 @@
+/*******************************************************************************
+ * 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.codegen.Label;
+import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
+import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
+import net.sourceforge.phpdt.internal.compiler.impl.Constant;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
 
-/**
- * A Statement.
- * @author Matthieu Casanova
- */
-public abstract class Statement extends AstNode {
 
-  /**
-   * Create a node giving starting and ending offset.
-   * @param sourceStart starting offset
-   * @param sourceEnd ending offset
-   */
-  protected Statement(final int sourceStart,
-                   final int sourceEnd) {
-    super(sourceStart, sourceEnd);
-  }
+public abstract class Statement extends ASTNode {
+       
+       /**
+        * Statement constructor comment.
+        */ 
+       public Statement() {
+               super();
+       }
+       
+       public abstract FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo);
+       
+//     public abstract void generateCode(BlockScope currentScope, CodeStream codeStream);
+       
+       public boolean isEmptyBlock() {
+               return false;
+       }
+       
+       public boolean isValidJavaStatement() {
+               //the use of this method should be avoid in most cases
+               //and is here mostly for documentation purpose.....
+               //while the parser is responsable for creating
+               //welled formed expression statement, which results
+               //in the fact that java-non-semantic-expression-used-as-statement
+               //should not be parsable...thus not being built.
+               //It sounds like the java grammar as help the compiler job in removing
+               //-by construction- some statement that would have no effect....
+               //(for example all expression that may do side-effects are valid statement
+               // -this is an appromative idea.....-)
 
-  /**
-   * Tell if the block is empty.
-   * @return a statement is not empty by default
-   */
-  public boolean isEmptyBlock() {
-    return false;
-  }
+               return true;
+       }
+       public StringBuffer print(int indent, StringBuffer output) {
+               return printStatement(indent, output);
+       }
+       public abstract StringBuffer printStatement(int indent, StringBuffer output);
+
+       public abstract void resolve(BlockScope scope);
+       
+       public Constant resolveCase(BlockScope scope, TypeBinding testType, SwitchStatement switchStatement) {
+               // statement within a switch that are not case are treated as normal statement.... 
+
+               resolve(scope);
+               return null;
+       }
+       
+       public void resetStateForCodeGeneration() {
+       }
+       
+       /**
+        * INTERNAL USE ONLY.
+        * Do nothing by default. This is used to redirect inter-statements jumps.
+        */
+       public void branchChainTo(Label label) {
+       }
 }