new version with WorkingCopy Management

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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/internal/compiler/ast/Case.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/internal/compiler/ast/Case.java
new file mode 100644 (file)
index 0000000..afea4db
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/internal/compiler/ast/Case.java
@@ -0,0 +1,101 @@
+/*******************************************************************************
+ * 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.phpeclipse.internal.compiler.ast;
+
+import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
+import net.sourceforge.phpdt.internal.compiler.codegen.CaseLabel;
+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;
+
+
+public class Case extends Statement {
+       
+       public Expression constantExpression;
+       public CaseLabel targetLabel;
+       public Case(int sourceStart, Expression constantExpression) {
+               this.constantExpression = constantExpression;
+               this.sourceEnd = constantExpression.sourceEnd;
+               this.sourceStart = sourceStart;
+       }
+
+       public FlowInfo analyseCode(
+               BlockScope currentScope,
+               FlowContext flowContext,
+               FlowInfo flowInfo) {
+
+               if (constantExpression.constant == NotAConstant)
+                       currentScope.problemReporter().caseExpressionMustBeConstant(constantExpression);
+
+               this.constantExpression.analyseCode(currentScope, flowContext, flowInfo);
+               return flowInfo;
+       }
+
+       /**
+        * Case code generation
+        *
+        */
+//     public void generateCode(BlockScope currentScope, CodeStream codeStream) {
+//
+//             if ((bits & IsReachableMASK) == 0) {
+//                     return;
+//             }
+//             int pc = codeStream.position;
+//             targetLabel.place();
+//             codeStream.recordPositionsFrom(pc, this.sourceStart);
+//     }
+
+       /**
+        * No-op : should use resolveCase(...) instead.
+        */
+       public void resolve(BlockScope scope) {
+       }
+
+       public Constant resolveCase(
+               BlockScope scope,
+               TypeBinding switchType,
+               SwitchStatement switchStatement) {
+
+               // add into the collection of cases of the associated switch statement
+               switchStatement.cases[switchStatement.caseCount++] = this;
+               TypeBinding caseType = constantExpression.resolveType(scope);
+               if (caseType == null || switchType == null)
+                       return null;
+               if (constantExpression.isConstantValueOfTypeAssignableToType(caseType, switchType))
+                       return constantExpression.constant;
+               if (caseType.isCompatibleWith(switchType))
+                       return constantExpression.constant;
+               scope.problemReporter().typeMismatchErrorActualTypeExpectedType(
+                       constantExpression,
+                       caseType,
+                       switchType);
+               return null;
+       }
+
+       public String toString(int tab) {
+
+               String s = tabString(tab);
+               s = s + "case " + constantExpression.toStringExpression() + " : "; //$NON-NLS-1$ //$NON-NLS-2$
+               return s;
+       }
+
+       public void traverse(
+               IAbstractSyntaxTreeVisitor visitor,
+               BlockScope blockScope) {
+
+               if (visitor.visit(this, blockScope)) {
+                       constantExpression.traverse(visitor, blockScope);
+               }
+               visitor.endVisit(this, blockScope);
+       }
+}