本文整理汇总了C#中Antlr4.Tool.Ast.GrammarAST.GetAncestor方法的典型用法代码示例。如果您正苦于以下问题：C# GrammarAST.GetAncestor方法的具体用法？C# GrammarAST.GetAncestor怎么用？C# GrammarAST.GetAncestor使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Antlr4.Tool.Ast.GrammarAST的用法示例。
在下文中一共展示了GrammarAST.GetAncestor方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: A
/**
Make sure that action is last element in outer alt; here action,
a2, z, and zz are bad, but a3 is ok:
(RULE A (BLOCK (ALT {action} 'a')))
(RULE B (BLOCK (ALT (BLOCK (ALT {a2} 'x') (ALT 'y')) {a3})))
(RULE C (BLOCK (ALT 'd' {z}) (ALT 'e' {zz})))
*/
protected virtual void CheckElementIsOuterMostInSingleAlt(GrammarAST tree)
{
CommonTree alt = (CommonTree)tree.Parent;
CommonTree blk = (CommonTree)alt.Parent;
bool outerMostAlt = blk.Parent.Type == RULE;
ITree rule = tree.GetAncestor(RULE);
string fileName = tree.Token.InputStream.SourceName;
if (!outerMostAlt || blk.ChildCount > 1)
{
ErrorType e = ErrorType.LEXER_COMMAND_PLACEMENT_ISSUE;
g.tool.errMgr.GrammarError(e,
fileName,
tree.Token,
rule.GetChild(0).Text);
}
}示例2: RuleOption
public override void RuleOption(GrammarAST ID, GrammarAST valueAST)
{
CheckOptions((GrammarAST)ID.GetAncestor(RULE), ID.Token, valueAST);
}示例3: BlockOption
public override void BlockOption(GrammarAST ID, GrammarAST valueAST)
{
CheckOptions((GrammarAST)ID.GetAncestor(BLOCK), ID.Token, valueAST);
}示例4: TranslateLeftFactoredElement
protected virtual GrammarAST TranslateLeftFactoredElement(GrammarAST element, string factoredRule, bool variant, DecisionFactorMode mode, bool includeFactoredElement)
{
if (mode == DecisionFactorMode.PARTIAL_UNFACTORED && includeFactoredElement)
{
throw new ArgumentException("Cannot include the factored element in unfactored alternatives.");
}
if (mode == DecisionFactorMode.COMBINED_FACTOR)
{
throw new InvalidOperationException("Cannot return a combined answer.");
}
Debug.Assert(!mode.IncludeFactoredAlts() || !mode.IncludeUnfactoredAlts());
switch (element.Type)
{
case ANTLRParser.ASSIGN:
case ANTLRParser.PLUS_ASSIGN:
{
/* label=a
*
* ==>
*
* factoredElement label=a_factored
*/
GrammarAST translatedChildElement = TranslateLeftFactoredElement((GrammarAST)element.GetChild(1), factoredRule, variant, mode, includeFactoredElement);
if (translatedChildElement == null)
{
return null;
}
RuleAST ruleAST = (RuleAST)element.GetAncestor(ANTLRParser.RULE);
#if false
LOGGER.log(Level.WARNING, "Could not left factor ''{0}'' out of decision in rule ''{1}'': labeled rule references are not yet supported.",
new object[] { factoredRule, ruleAST.GetChild(0).Text });
#endif
return null;
//if (!translatedChildElement.IsNil)
//{
// GrammarAST root = (GrammarAST)adaptor.Nil();
// object factoredElement = translatedChildElement;
// if (outerRule)
// {
// adaptor.AddChild(root, factoredElement);
// }
// string action = string.Format("_localctx.{0} = (ContextType)_localctx.getParent().getChild(_localctx.getParent().getChildCount() - 1);", element.GetChild(0).Text);
// adaptor.AddChild(root, new ActionAST(adaptor.CreateToken(ANTLRParser.ACTION, action)));
// return root;
//}
//else
//{
// GrammarAST root = (GrammarAST)adaptor.Nil();
// object factoredElement = adaptor.DeleteChild(translatedChildElement, 0);
// if (outerRule)
// {
// adaptor.AddChild(root, factoredElement);
// }
// adaptor.AddChild(root, element);
// adaptor.ReplaceChildren(element, 1, 1, translatedChildElement);
// return root;
//}
}
case ANTLRParser.RULE_REF:
{
if (factoredRule.Equals(element.Token.Text))
{
if (!mode.IncludeFactoredAlts())
{
return null;
}
if (includeFactoredElement)
{
// this element is already left factored
return element;
}
GrammarAST root1 = (GrammarAST)adaptor.Nil();
root1.AddChild((ITree)adaptor.Create(TokenConstants.Epsilon, "EPSILON"));
root1.DeleteChild(0);
return root1;
}
Rule targetRule;
if (!_rules.TryGetValue(element.Token.Text, out targetRule))
{
return null;
}
RuleVariants ruleVariants = CreateLeftFactoredRuleVariant(targetRule, factoredRule);
switch (ruleVariants)
{
case RuleVariants.NONE:
if (!mode.IncludeUnfactoredAlts())
//.........这里部分代码省略.........