[Rubyeclipse-commit] SF.net SVN: rubyeclipse: [2147] branches/search_engine/org.rubypeople.rdt. core/src/org/rubypeople/rdt/internal/compiler/env/lookup/Scope.java

[<caw...@us...>]

Revision: 2147
          http://svn.sourceforge.net/rubyeclipse/?rev=2147&view=rev
Author:   cawilliams
Date:     2007-03-13 11:17:22 -0700 (Tue, 13 Mar 2007)

Log Message:
-----------


Added Paths:
-----------
    branches/search_engine/org.rubypeople.rdt.core/src/org/rubypeople/rdt/internal/compiler/env/lookup/Scope.java

Added: branches/search_engine/org.rubypeople.rdt.core/src/org/rubypeople/rdt/internal/compiler/env/lookup/Scope.java
===================================================================
--- branches/search_engine/org.rubypeople.rdt.core/src/org/rubypeople/rdt/internal/compiler/env/lookup/Scope.java	                        (rev 0)
+++ branches/search_engine/org.rubypeople.rdt.core/src/org/rubypeople/rdt/internal/compiler/env/lookup/Scope.java	2007-03-13 18:17:22 UTC (rev 2147)
@@ -0,0 +1,90 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2006 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.rubypeople.rdt.internal.compiler.env.lookup;
+
+import org.rubypeople.rdt.internal.compiler.lookup.LookupEnvironment;
+
+
+public abstract class Scope implements TypeConstants {
+	
+	/* Scope kinds */
+	public final static int BLOCK_SCOPE = 1;
+	public final static int CLASS_SCOPE = 3;
+	public final static int COMPILATION_UNIT_SCOPE = 4;
+	public final static int METHOD_SCOPE = 2;
+
+	/* Argument Compatibilities */
+	public final static int NOT_COMPATIBLE = -1;
+	public final static int COMPATIBLE = 0;
+	public final static int AUTOBOX_COMPATIBLE = 1;
+	public final static int VARARGS_COMPATIBLE = 2;
+
+	/* Type Compatibilities */
+	public static final int EQUAL_OR_MORE_SPECIFIC = -1;
+	public static final int NOT_RELATED = 0;
+	public static final int MORE_GENERIC = 1;	
+
+	public int kind;
+	public Scope parent;
+	
+	protected Scope(int kind, Scope parent) {
+		this.kind = kind;
+		this.parent = parent;
+	}
+	
+	public final TypeScope classScope() {
+		Scope scope = this;
+		do {
+			if (scope instanceof TypeScope)
+				return (TypeScope) scope;
+			scope = scope.parent;
+		} while (scope != null);
+		return null;
+	}
+	
+	public final SourceModuleScope compilationUnitScope() {
+		Scope lastScope = null;
+		Scope scope = this;
+		do {
+			lastScope = scope;
+			scope = scope.parent;
+		} while (scope != null);
+		return (SourceModuleScope) lastScope;
+	}
+	
+	public final TypeScope enclosingClassScope() {
+		Scope scope = this;
+		while ((scope = scope.parent) != null) {
+			if (scope instanceof TypeScope) return (TypeScope) scope;
+		}
+		return null; // may answer null if no type around
+	}
+	
+	public final MethodScope enclosingMethodScope() {
+		Scope scope = this;
+		while ((scope = scope.parent) != null) {
+			if (scope instanceof MethodScope) return (MethodScope) scope;
+		}
+		return null; // may answer null if no method around
+	}
+
+	public final LookupEnvironment environment() {
+		Scope scope, unitScope = this;
+		while ((scope = unitScope.parent) != null)
+			unitScope = scope;
+		return ((SourceModuleScope) unitScope).environment;
+	}
+	
+	// start position in this scope - for ordering scopes vs. variables
+	int startIndex() {
+		return 0;
+	}
+}
\ No newline at end of file


This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.