Examples with RuleSempredFunction org.antlr.v4.codegen.model.RuleSempredFunction used on opensource projects

Example 1 with RuleSempredFunction

use of org.antlr.v4.codegen.model.RuleSempredFunction in project antlr4 by antlr.

the class OutputModelController method buildRuleFunction.

/** Create RuleFunction per rule and update sempreds,actions of parser
	 *  output object with stuff found in r.
	 */
public void buildRuleFunction(Parser parser, Rule r) {
    RuleFunction function = rule(r);
    parser.funcs.add(function);
    pushCurrentRule(function);
    function.fillNamedActions(delegate, r);
    if (r instanceof LeftRecursiveRule) {
        buildLeftRecursiveRuleFunction((LeftRecursiveRule) r, (LeftRecursiveRuleFunction) function);
    } else {
        buildNormalRuleFunction(r, function);
    }
    Grammar g = getGrammar();
    for (ActionAST a : r.actions) {
        if (a instanceof PredAST) {
            PredAST p = (PredAST) a;
            RuleSempredFunction rsf = parser.sempredFuncs.get(r);
            if (rsf == null) {
                rsf = new RuleSempredFunction(delegate, r, function.ctxType);
                parser.sempredFuncs.put(r, rsf);
            }
            rsf.actions.put(g.sempreds.get(p), new Action(delegate, p));
        }
    }
    popCurrentRule();
}

Example 2 with RuleSempredFunction

use of org.antlr.v4.codegen.model.RuleSempredFunction in project antlr4 by antlr.

the class OutputModelController method buildLexerRuleActions.

public void buildLexerRuleActions(Lexer lexer, final Rule r) {
    if (r.actions.isEmpty()) {
        return;
    }
    CodeGenerator gen = delegate.getGenerator();
    Grammar g = delegate.getGrammar();
    String ctxType = gen.getTarget().getRuleFunctionContextStructName(r);
    RuleActionFunction raf = lexer.actionFuncs.get(r);
    if (raf == null) {
        raf = new RuleActionFunction(delegate, r, ctxType);
    }
    for (ActionAST a : r.actions) {
        if (a instanceof PredAST) {
            PredAST p = (PredAST) a;
            RuleSempredFunction rsf = lexer.sempredFuncs.get(r);
            if (rsf == null) {
                rsf = new RuleSempredFunction(delegate, r, ctxType);
                lexer.sempredFuncs.put(r, rsf);
            }
            rsf.actions.put(g.sempreds.get(p), new Action(delegate, p));
        } else if (a.getType() == ANTLRParser.ACTION) {
            raf.actions.put(g.lexerActions.get(a), new Action(delegate, a));
        }
    }
    if (!raf.actions.isEmpty() && !lexer.actionFuncs.containsKey(r)) {
        // only add to lexer if the function actually contains actions
        lexer.actionFuncs.put(r, raf);
    }
}