| /***** BEGIN LICENSE BLOCK ***** |
| * Version: CPL 1.0/GPL 2.0/LGPL 2.1 |
| * |
| * The contents of this file are subject to the Common Public |
| * License Version 1.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Software distributed under the License is distributed on an "AS |
| * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * rights and limitations under the License. |
| * |
| * Copyright (C) 2006 Thomas E Enebo <enebo@acm.org> |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
| * either of the GNU General Public License Version 2 or later (the "GPL"), |
| * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| * in which case the provisions of the GPL or the LGPL are applicable instead |
| * of those above. If you wish to allow use of your version of this file only |
| * under the terms of either the GPL or the LGPL, and not to allow others to |
| * use your version of this file under the terms of the CPL, indicate your |
| * decision by deleting the provisions above and replace them with the notice |
| * and other provisions required by the GPL or the LGPL. If you do not delete |
| * the provisions above, a recipient may use your version of this file under |
| * the terms of any one of the CPL, the GPL or the LGPL. |
| ***** END LICENSE BLOCK *****/ |
| package org.jruby.parser; |
| |
| import org.jruby.ast.AssignableNode; |
| import org.jruby.ast.DAsgnNode; |
| import org.jruby.ast.DVarNode; |
| import org.jruby.ast.Node; |
| import org.jruby.lexer.yacc.ISourcePosition; |
| |
| public class BlockStaticScope extends StaticScope { |
| private static final long serialVersionUID = -3882063260379968149L; |
| |
| public BlockStaticScope(StaticScope parentScope) { |
| super(parentScope); |
| } |
| |
| public StaticScope getLocalScope() { |
| return getEnclosingScope().getLocalScope(); |
| } |
| |
| public int isDefined(String name, int depth) { |
| int slot = exists(name); |
| if (slot >= 0) return (depth << 16) | exists(name); |
| |
| return getEnclosingScope().isDefined(name, depth + 1); |
| } |
| |
| /** |
| * @see org.jruby.parser.StaticScope#getAllNamesInScope() |
| */ |
| public String[] getAllNamesInScope() { |
| String[] variables = getEnclosingScope().getAllNamesInScope(); |
| String[] ourVariables = getVariables(); |
| |
| // We have no names to add to existing list |
| if (ourVariables == null) return variables; |
| |
| // we know variables cannot be null since localstaticscope will create a 0 length one. |
| int newSize = variables.length + ourVariables.length; |
| String[] names = new String[newSize]; |
| |
| System.arraycopy(variables, 0, names, 0, variables.length); |
| System.arraycopy(ourVariables, 0, names, variables.length, ourVariables.length); |
| |
| return names; |
| } |
| |
| protected AssignableNode assign(ISourcePosition position, String name, Node value, |
| StaticScope topScope, int depth) { |
| int slot = exists(name); |
| |
| if (slot >= 0) { |
| return new DAsgnNode(position, name, ((depth << 16) | slot), value); |
| } |
| |
| return getEnclosingScope().assign(position, name, value, topScope, depth + 1); |
| } |
| |
| public AssignableNode addAssign(ISourcePosition position, String name, Node value) { |
| int slot = addVariable(name); |
| |
| // No bit math to store level since we know level is zero for this case |
| return new DAsgnNode(position, name, slot, value); |
| } |
| |
| public Node declare(ISourcePosition position, String name, int depth) { |
| int slot = exists(name); |
| |
| if (slot >= 0) { |
| return new DVarNode(position, ((depth << 16) | slot), name); |
| } |
| |
| return getEnclosingScope().declare(position, name, depth + 1); |
| } |
| } |