| // |
| // RewriteRuleTokenStream.m |
| // ANTLR |
| // |
| // Created by Kay Röpke on 7/16/07. |
| // [The "BSD licence"] |
| // Copyright (c) 2006-2007 Kay Roepke 2010 Alan Condit |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions |
| // are met: |
| // 1. Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // 2. Redistributions in binary form must reproduce the above copyright |
| // notice, this list of conditions and the following disclaimer in the |
| // documentation and/or other materials provided with the distribution. |
| // 3. The name of the author may not be used to endorse or promote products |
| // derived from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| // IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| // NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #import "RewriteRuleTokenStream.h" |
| #import "RuntimeException.h" |
| #import "HashMap.h" |
| #import "MapElement.h" |
| |
| @implementation RewriteRuleTokenStream |
| |
| + (id) newRewriteRuleTokenStream:(id<TreeAdaptor>)anAdaptor |
| description:(NSString *)elementDescription |
| { |
| return [[RewriteRuleTokenStream alloc] initWithTreeAdaptor:anAdaptor |
| description:elementDescription]; |
| } |
| |
| /** Create a stream with one element */ |
| + (id) newRewriteRuleTokenStream:(id<TreeAdaptor>)adaptor |
| description:(NSString *)elementDescription |
| element:(id) oneElement |
| { |
| return [[RewriteRuleTokenStream alloc] initWithTreeAdaptor:adaptor |
| description:elementDescription |
| element:oneElement]; |
| } |
| |
| /** Create a stream, but feed off an existing list */ |
| + (id) newRewriteRuleTokenStream:(id<TreeAdaptor>)adaptor |
| description:(NSString *)elementDescription |
| elements:(AMutableArray *)elements |
| { |
| return [[RewriteRuleTokenStream alloc] initWithTreeAdaptor:adaptor |
| description:elementDescription |
| elements:elements]; |
| } |
| |
| - (id) init |
| { |
| if ((self = [super init]) != nil ) { |
| } |
| return self; |
| } |
| |
| - (id) initWithTreeAdaptor:(id<TreeAdaptor>)anAdaptor |
| description:(NSString *)aDescription |
| { |
| if ((self = [super initWithTreeAdaptor:anAdaptor |
| description:aDescription]) != nil ) { |
| } |
| return self; |
| } |
| |
| - (id) initWithTreeAdaptor:(id<TreeAdaptor>)anAdaptor |
| description:(NSString *)aDescription |
| element:(id)anElement |
| { |
| if ((self = [super initWithTreeAdaptor:anAdaptor |
| description:aDescription |
| element:anElement]) != nil ) { |
| } |
| return self; |
| } |
| |
| - (id) initWithTreeAdaptor:(id<TreeAdaptor>)anAdaptor |
| description:(NSString *)aDescription |
| elements:(AMutableArray *)elementList |
| { |
| if ((self = [super initWithTreeAdaptor:anAdaptor |
| description:aDescription |
| elements:elementList]) != nil ) { |
| } |
| return self; |
| } |
| |
| - (id<BaseTree>) nextNode |
| { |
| id<Token> t = (id<Token>)[self _next]; |
| return [treeAdaptor create:t]; |
| } |
| |
| - (id) nextToken |
| { |
| return [self _next]; |
| } |
| |
| /** Don't convert to a tree unless they explicitly call nextTree. |
| * This way we can do hetero tree nodes in rewrite. |
| */ |
| - (id<BaseTree>) toTree:(id<Token>)element |
| { |
| return (id<BaseTree>)element; |
| } |
| |
| - (id) copyElement:(id)element |
| { |
| @throw [RuntimeException newException:@"copy can't be called for a token stream."]; |
| } |
| |
| @end |