+++ /dev/null
-/*******************************************************************************
- * 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.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.
- 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);
- return mergedInfo;
- }
- }
-
- 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 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 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);
- s += new String(label) + ": " + statement.toString(0); //$NON-NLS-1$
- return s;
- }
-
- public void traverse(
- ASTVisitor visitor,
- BlockScope blockScope) {
-
- if (visitor.visit(this, blockScope)) {
- statement.traverse(visitor, blockScope);
- }
- visitor.endVisit(this, blockScope);
- }
-
- public void resetStateForCodeGeneration() {
- if (this.targetLabel != null) {
- this.targetLabel.resetStateForCodeGeneration();
- }
- }
-}
git://git.phpeclipse.com / phpeclipse.git / blobdiff