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Kevin Krüger
171
packages/Antlr34.3.4.19004.1/tools/Codegen/Templates/CSharp2/ST.stg
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171
packages/Antlr34.3.4.19004.1/tools/Codegen/Templates/CSharp2/ST.stg
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/*
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* [The "BSD license"]
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* Copyright (c) 2007-2008 Johannes Luber
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* Copyright (c) 2005-2007 Kunle Odutola
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* Copyright (c) 2011 Sam Harwell
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* Copyright (c) 2011 Terence Parr
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/** Template subgroup to add template rewrite output
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* If debugging, then you'll also get STDbg.stg loaded.
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*/
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@outputFile.imports() ::= <<
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<@super.imports()>
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using Antlr.StringTemplate;
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using Antlr.StringTemplate.Language;
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<if(!backtracking)>
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using Hashtable = System.Collections.Hashtable;
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<endif>
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>>
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/** Add this to each rule's return value struct */
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@returnScope.ruleReturnMembers() ::= <<
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private StringTemplate _st;
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public StringTemplate Template { get { return _st; } set { _st = value; } }
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public override string ToString() { return (Template==null) ? string.Empty : Template.ToString(); }
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>>
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@genericParser.members() ::= <<
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<@super.members()>
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protected StringTemplateGroup templateLib = new StringTemplateGroup("<name>Templates", typeof(AngleBracketTemplateLexer) );
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public StringTemplateGroup TemplateLib
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{
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get { return this.templateLib; }
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set { this.templateLib = value; }
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}
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/// \<summary> Allows convenient multi-value initialization:
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/// "new STAttrMap().Add(...).Add(...)"
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/// \</summary>
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protected class STAttrMap : Hashtable
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{
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public STAttrMap Add(string attrName, object value)
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{
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base.Add(attrName, value);
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return this;
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}
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public STAttrMap Add(string attrName, int value)
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{
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base.Add(attrName, value);
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return this;
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}
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}
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>>
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/** x+=rule when output=template */
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ruleRefAndListLabel(rule,label,elementIndex,args,scope) ::= <<
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<ruleRef(...)>
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<listLabel(elem=label+".Template",...)>
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>>
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rewriteTemplate(alts) ::= <<
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// TEMPLATE REWRITE
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<if(backtracking)>
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if ( <actions.(actionScope).synpredgate> )
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{
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<alts:rewriteTemplateAlt(); separator="else ">
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<if(rewriteMode)><replaceTextInLine()><endif>
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}
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<else>
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<alts:rewriteTemplateAlt(); separator="else ">
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<if(rewriteMode)><replaceTextInLine()><endif>
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<endif>
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>>
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replaceTextInLine() ::= <<
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<if(TREE_PARSER)>
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((TokenRewriteStream)input.TokenStream).Replace(
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input.TreeAdaptor.GetTokenStartIndex(retval.Start),
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input.TreeAdaptor.GetTokenStopIndex(retval.Start),
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retval.Template);
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<else>
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((TokenRewriteStream)input).Replace(
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((IToken)retval.Start).TokenIndex,
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input.LT(-1).TokenIndex,
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retval.Template);
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<endif>
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>>
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rewriteTemplateAlt() ::= <<
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// <it.description>
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<if(it.pred)>
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if (<it.pred>) {
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retval.Template = <it.alt>;
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}<\n>
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<else>
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{
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retval.Template = <it.alt>;
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}<\n>
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<endif>
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>>
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rewriteEmptyTemplate(alts) ::= <<
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null;
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>>
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/** Invoke a template with a set of attribute name/value pairs.
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* Set the value of the rule's template *after* having set
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* the attributes because the rule's template might be used as
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* an attribute to build a bigger template; you get a self-embedded
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* template.
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*/
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rewriteExternalTemplate(name,args) ::= <<
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templateLib.GetInstanceOf("<name>"<if(args)>,
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new STAttrMap()<args:{a | .Add("<a.name>", <a.value>)}>
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<endif>)
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>>
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/** expr is a string expression that says what template to load */
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rewriteIndirectTemplate(expr,args) ::= <<
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templateLib.GetInstanceOf(<expr><if(args)>,
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new STAttrMap()<args:{a | .Add("<a.name>", <a.value>)}>
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<endif>)
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>>
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/** Invoke an inline template with a set of attribute name/value pairs */
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rewriteInlineTemplate(args, template) ::= <<
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new StringTemplate(templateLib, "<template>"<if(args)>,
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new STAttrMap()<args:{a | .Add("<a.name>", <a.value>)}>
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<endif>)
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>>
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/** plain -> {foo} action */
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rewriteAction(action) ::= <<
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<action>
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>>
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/** An action has %st.attrName=expr; or %{st}.attrName=expr; */
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actionSetAttribute(st,attrName,expr) ::= <<
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(<st>).SetAttribute("<attrName>",<expr>);
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>>
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/** Translate %{stringExpr} */
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actionStringConstructor(stringExpr) ::= <<
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new StringTemplate(templateLib,<stringExpr>)
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>>
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