public InvokeRule(ParserFactory factory, GrammarAST ast, GrammarAST labelAST)
: base(factory, ast)
{
if (ast.atnState != null)
{
RuleTransition ruleTrans = (RuleTransition)ast.atnState.Transition(0);
stateNumber = ast.atnState.stateNumber;
}
this.name = ast.Text;
Rule r = factory.GetGrammar().GetRule(name);
ctxName = factory.GetTarget().GetRuleFunctionContextStructName(r);
// TODO: move to factory
RuleFunction rf = factory.GetCurrentRuleFunction();
if (labelAST != null)
{
// for x=r, define <rule-context-type> x and list_x
string label = labelAST.Text;
if (labelAST.Parent.Type == ANTLRParser.PLUS_ASSIGN)
{
factory.DefineImplicitLabel(ast, this);
string listLabel = factory.GetTarget().GetListLabel(label);
RuleContextListDecl l = new RuleContextListDecl(factory, listLabel, ctxName);
rf.AddContextDecl(ast.GetAltLabel(), l);
}
else
{
RuleContextDecl d = new RuleContextDecl(factory, label, ctxName);
labels.Add(d);
rf.AddContextDecl(ast.GetAltLabel(), d);
}
}
ActionAST arg = (ActionAST)ast.GetFirstChildWithType(ANTLRParser.ARG_ACTION);
if (arg != null)
{
argExprsChunks = ActionTranslator.TranslateAction(factory, rf, arg.Token, arg);
}
// If action refs rule as rulename not label, we need to define implicit label
if (factory.GetCurrentOuterMostAlt().ruleRefsInActions.ContainsKey(ast.Text))
{
string label = factory.GetTarget().GetImplicitRuleLabel(ast.Text);
RuleContextDecl d = new RuleContextDecl(factory, label, ctxName);
labels.Add(d);
rf.AddContextDecl(ast.GetAltLabel(), d);
}
}
public LeftRecursiveRuleFunction(OutputModelFactory factory, LeftRecursiveRule r)
: base(factory, r)
{
// Since we delete x=lr, we have to manually add decls for all labels
// on left-recur refs to proper structs
foreach (System.Tuple<GrammarAST, string> pair in r.leftRecursiveRuleRefLabels)
{
GrammarAST idAST = pair.Item1;
string altLabel = pair.Item2;
string label = idAST.Text;
GrammarAST rrefAST = (GrammarAST)idAST.Parent.GetChild(1);
if (rrefAST.Type == ANTLRParser.RULE_REF)
{
Rule targetRule = factory.GetGrammar().GetRule(rrefAST.Text);
string ctxName = factory.GetTarget().GetRuleFunctionContextStructName(targetRule);
RuleContextDecl d;
if (idAST.Parent.Type == ANTLRParser.ASSIGN)
{
d = new RuleContextDecl(factory, label, ctxName);
}
else
{
d = new RuleContextListDecl(factory, label, ctxName);
}
StructDecl @struct = ruleCtx;
if (altLabelCtxs != null)
{
AltLabelStructDecl s;
if (altLabel != null && altLabelCtxs.TryGetValue(altLabel, out s) && s != null)
@struct = s; // if alt label, use subctx
}
@struct.AddDecl(d); // stick in overall rule's ctx
}
}
}
