/*******************************************************************************
- * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
+ * 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 v0.5
+ * 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-v05.html
+ * 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.codegen.*;
-import net.sourceforge.phpdt.internal.compiler.flow.*;
-import net.sourceforge.phpdt.internal.compiler.lookup.*;
+import net.sourceforge.phpdt.internal.compiler.ASTVisitor;
+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.flow.LabelFlowContext;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
public class LabeledStatement extends Statement {
-
+
public Statement statement;
+
public char[] label;
+
public Label targetLabel;
// for local variables table attributes
int mergedInitStateIndex = -1;
-
+
/**
* LabeledStatement constructor comment.
*/
public LabeledStatement(char[] l, Statement st, int s, int e) {
-
+
this.statement = st;
this.label = l;
this.sourceStart = s;
this.sourceEnd = e;
}
-
- public FlowInfo analyseCode(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo) {
-
- // need to stack a context to store explicit label, answer inits in case of normal completion merged
- // with those relative to the exit path from break statement occurring inside the labeled statement.
+
+ public FlowInfo analyseCode(BlockScope currentScope,
+ FlowContext flowContext, FlowInfo flowInfo) {
+
+ // need to stack a context to store explicit label, answer inits in case
+ // of normal completion merged
+ // with those relative to the exit path from break statement occurring
+ // inside the labeled statement.
if (statement == null) {
return flowInfo;
} else {
LabelFlowContext labelContext;
- FlowInfo mergedInfo =
- statement
- .analyseCode(
- currentScope,
- (labelContext =
- new LabelFlowContext(
- flowContext,
- this,
- label,
- (targetLabel = new Label()),
- currentScope)),
- flowInfo)
- .mergedWith(labelContext.initsOnBreak);
- mergedInitStateIndex =
- currentScope.methodScope().recordInitializationStates(mergedInfo);
+ FlowInfo mergedInfo = statement.analyseCode(
+ currentScope,
+ (labelContext = new LabelFlowContext(flowContext, this,
+ label, (targetLabel = new Label()), currentScope)),
+ flowInfo).mergedWith(labelContext.initsOnBreak);
+ mergedInitStateIndex = currentScope.methodScope()
+ .recordInitializationStates(mergedInfo);
return mergedInfo;
}
}
-
- public AstNode concreteStatement() {
-
- return statement.concreteStatement();
+
+ public ASTNode concreteStatement() {
+
+ // return statement.concreteStatement(); // for supporting nested
+ // labels: a:b:c: someStatement (see 21912)
+ return statement;
}
-
+
/**
* Code generation for labeled statement
- *
+ *
* may not need actual source positions recording
- *
- * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
- * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
+ *
+ * @param currentScope
+ * net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
+ * @param codeStream
+ * net.sourceforge.phpdt.internal.compiler.codegen.CodeStream
*/
- public void generateCode(BlockScope currentScope, CodeStream codeStream) {
-
- int pc = codeStream.position;
- if (targetLabel != null) {
- targetLabel.codeStream = codeStream;
- if (statement != null) {
- statement.generateCode(currentScope, codeStream);
- }
- targetLabel.place();
- }
- // May loose some local variable initializations : affecting the local variable attributes
- if (mergedInitStateIndex != -1) {
- codeStream.removeNotDefinitelyAssignedVariables(
- currentScope,
- mergedInitStateIndex);
- }
- codeStream.recordPositionsFrom(pc, this.sourceStart);
+ // public void generateCode(BlockScope currentScope, CodeStream codeStream)
+ // {
+ //
+ // int pc = codeStream.position;
+ // if (targetLabel != null) {
+ // targetLabel.codeStream = codeStream;
+ // if (statement != null) {
+ // statement.generateCode(currentScope, codeStream);
+ // }
+ // targetLabel.place();
+ // }
+ // // May loose some local variable initializations : affecting the local
+ // variable attributes
+ // if (mergedInitStateIndex != -1) {
+ // codeStream.removeNotDefinitelyAssignedVariables(
+ // currentScope,
+ // mergedInitStateIndex);
+ // }
+ // codeStream.recordPositionsFrom(pc, this.sourceStart);
+ // }
+ public StringBuffer printStatement(int tab, StringBuffer output) {
+
+ printIndent(tab, output).append(label).append(": "); //$NON-NLS-1$
+ if (this.statement == null)
+ output.append(';');
+ else
+ this.statement.printStatement(0, output);
+ return output;
}
-
+
public void resolve(BlockScope scope) {
-
+
statement.resolve(scope);
}
-
+
public String toString(int tab) {
String s = tabString(tab);
return s;
}
- public void traverse(
- IAbstractSyntaxTreeVisitor visitor,
- BlockScope blockScope) {
+ public void traverse(ASTVisitor visitor, BlockScope blockScope) {
if (visitor.visit(this, blockScope)) {
statement.traverse(visitor, blockScope);
}
public void resetStateForCodeGeneration() {
-
- this.targetLabel.resetStateForCodeGeneration();
+ if (this.targetLabel != null) {
+ this.targetLabel.resetStateForCodeGeneration();
+ }
}
-}
\ No newline at end of file
+}
git://git.phpeclipse.com / phpeclipse.git / blobdiff