/*
***** 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
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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, new String[0]);
}
public BlockStaticScope(StaticScope parentScope, String[] names) {
super(parentScope, names);
}
public StaticScope getLocalScope() {
return enclosingScope.getLocalScope();
}
public int isDefined(String name, int depth) {
int slot = exists(name);
if (slot >= 0) return (depth << 16) | slot;
return enclosingScope.isDefined(name, depth + 1);
}
/**
* @see org.jruby.parser.StaticScope#getAllNamesInScope()
*/
public String[] getAllNamesInScope() {
String[] variables = enclosingScope.getAllNamesInScope();
String[] ourVariables = getVariables();
// 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) {
// mark as captured if from containing scope
if (depth > 0) capture(slot);
return new DAsgnNode(position, name, ((depth << 16) | slot), value);
}
return enclosingScope.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) {
// mark as captured if from containing scope
if (depth > 0) capture(slot);
return new DVarNode(position, ((depth << 16) | slot), name);
}
return enclosingScope.declare(position, name, depth + 1);
}
@Override
public String toString() {
return "BlockScope: " + super.toString() + "\n" + getEnclosingScope();
}
}