removed Makefile; lifted repo/org.ibex.tool/src/ to src/

[org.ibex.tool.git] / src / org / eclipse / jdt / internal / compiler / ast / CaseStatement.java

diff --git a/src/org/eclipse/jdt/internal/compiler/ast/CaseStatement.java b/src/org/eclipse/jdt/internal/compiler/ast/CaseStatement.java
new file mode 100644 (file)
index 0000000..56380f7
--- /dev/null
+++ b/src/org/eclipse/jdt/internal/compiler/ast/CaseStatement.java
@@ -0,0 +1,117 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 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 org.eclipse.jdt.internal.compiler.ast;
+
+import org.eclipse.jdt.internal.compiler.ASTVisitor;
+import org.eclipse.jdt.internal.compiler.impl.*;
+import org.eclipse.jdt.internal.compiler.codegen.*;
+import org.eclipse.jdt.internal.compiler.flow.*;
+import org.eclipse.jdt.internal.compiler.lookup.*;
+
+public class CaseStatement extends Statement {
+       
+       public Expression constantExpression;
+       public CaseLabel targetLabel;
+       public CaseStatement(Expression constantExpression, int sourceEnd, int sourceStart) {
+               this.constantExpression = constantExpression;
+               this.sourceEnd = sourceEnd;
+               this.sourceStart = sourceStart;
+       }
+
+       public FlowInfo analyseCode(
+               BlockScope currentScope,
+               FlowContext flowContext,
+               FlowInfo flowInfo) {
+
+               if (constantExpression != null) {
+                       if (constantExpression.constant == NotAConstant) {
+                               currentScope.problemReporter().caseExpressionMustBeConstant(constantExpression);
+                       }
+                       this.constantExpression.analyseCode(currentScope, flowContext, flowInfo);
+               }
+               return flowInfo;
+       }
+
+       public StringBuffer printStatement(int tab, StringBuffer output) {
+
+               printIndent(tab, output);
+               if (constantExpression == null) {
+                       output.append("default : "); //$NON-NLS-1$
+               } else {
+                       output.append("case "); //$NON-NLS-1$
+                       constantExpression.printExpression(0, output).append(" : "); //$NON-NLS-1$
+               }
+               return output.append(';');
+       }
+       
+       /**
+        * 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) {
+               // no-op : should use resolveCase(...) instead.
+       }
+
+       public Constant resolveCase(
+               BlockScope scope,
+               TypeBinding switchType,
+               SwitchStatement switchStatement) {
+
+           scope.switchCase = this; // record entering in a switch case block
+           
+               if (constantExpression == null) {
+                       // remember the default case into the associated switch statement
+                       if (switchStatement.defaultCase != null)
+                               scope.problemReporter().duplicateDefaultCase(this);
+       
+                       // on error the last default will be the selected one ...       
+                       switchStatement.defaultCase = this;
+                       return null;
+               }
+               // 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 void traverse(
+               ASTVisitor visitor,
+               BlockScope blockScope) {
+
+               if (visitor.visit(this, blockScope)) {
+                       if (constantExpression != null) constantExpression.traverse(visitor, blockScope);
+               }
+               visitor.endVisit(this, blockScope);
+       }
+}