Example usage for org.antlr.v4.runtime RuleContext isEmpty

Introduction

In this page you can find the example usage for org.antlr.v4.runtime RuleContext isEmpty.

Prototype

public boolean isEmpty() 

Source Link

Document

A context is empty if there is no invoking state; meaning nobody called current context.

Usage

From source file:org.tvl.goworks.editor.go.completion.GoCompletionQuery.java

License:Open Source License

public static RuleContext getTopContext(Parser parser, RuleContext context, IntervalSet values,
        boolean checkTop) {
    if (checkTop && context instanceof ParserRuleContext) {
        if (values.contains(context.getRuleIndex())) {
            return context;
        }/*from   w w w  . ja v  a 2  s. c om*/
    }

    if (context.isEmpty()) {
        return null;
    }

    if (values.contains(parser.getATN().states.get(context.invokingState).ruleIndex)) {
        return context.parent;
    }

    return getTopContext(parser, context.parent, values, false);
}

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