X-Git-Url: http://git.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/LabeledStatement.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/LabeledStatement.java
index 3acad54..e7fe6a0 100644
--- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/LabeledStatement.java
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/LabeledStatement.java
@@ -1,69 +1,136 @@
+/*******************************************************************************
+ * 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 java.util.List;
-
-/**
- * @author Matthieu Casanova
- */
-public final class LabeledStatement extends Statement {
-
-  private final String label;
-
-  private final Statement statement;
-
-  public LabeledStatement(final String label,
-                          final Statement statement,
-                          final int sourceStart,
-                          final int sourceEnd) {
-    super(sourceStart, sourceEnd);
-    this.label = label;
-    this.statement = statement;
-  }
-
-  /**
-   * Return the object into String.
-   * It should be overriden
-   * 
-   * @return a String
-   */
-  public String toString() {
-    return label + statement.toString();
-  }
-
-  /**
-   * Return the object into String.
-   * 
-   * @param tab how many tabs (not used here
-   * @return a String
-   */
-  public String toString(final int tab) {
-    return tabString(tab) + toString();
-  }
-
-  /**
-   * Get the variables from outside (parameters, globals ...)
-   *
-   * @param list the list where we will put variables
-   */
-  public void getOutsideVariable(final List list) {
-    statement.getOutsideVariable(list);
-  }
-
-  /**
-   * get the modified variables.
-   *
-   * @param list the list where we will put variables
-   */
-  public void getModifiedVariable(final List list) {
-    statement.getModifiedVariable(list);
-  }
-
-  /**
-   * Get the variables used.
-   *
-   * @param list the list where we will put variables
-   */
-  public void getUsedVariable(final List list) {
-    statement.getUsedVariable(list);
-  }
+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();
+		}
+	}
 }