Examples with ElementAction org.antlr.works.grammar.element.ElementAction used on opensource projects

Example 1 with ElementAction

use of org.antlr.works.grammar.element.ElementAction in project antlrworks by antlr.

the class EditorRules method findTokensToIgnore.

public static void findTokensToIgnore(List<ElementRule> rules, boolean reset) {
    for (ElementRule rule : rules) {
        if (reset)
            rule.ignored = false;
        List<ElementAction> actions = rule.getActions();
        if (actions == null || actions.isEmpty())
            continue;
        for (ElementAction action : actions) {
            List<ATEToken> tokens = action.getTokens();
            for (int t = 0; t < tokens.size(); t++) {
                ATEToken token = tokens.get(t);
                /* the 'channel' token can be either an ID or a reference if a rule in the grammar has the name
                   'channel' */
                if ((token.type == ATESyntaxLexer.TOKEN_ID || token.type == GrammarSyntaxLexer.TOKEN_REFERENCE) && token.getAttribute().equals("channel") && t + 3 < tokens.size()) {
                    ATEToken t1 = tokens.get(t + 1);
                    ATEToken t2 = tokens.get(t + 2);
                    if (t1.type != ATESyntaxLexer.TOKEN_CHAR || !t1.getAttribute().equals("="))
                        continue;
                    if (t2.type != ATESyntaxLexer.TOKEN_ID || !t2.getAttribute().equals("HIDDEN"))
                        continue;
                    rule.ignored = true;
                    break;
                }
                if (token.type == GrammarSyntaxLexer.TOKEN_ID && token.getAttribute().equals("skip")) {
                    // Take skip() into account only if it is the only token in the block
                    if (tokens.size() == 5 && t == 1) {
                        rule.ignored = true;
                        break;
                    }
                }
            }
        }
    }
}