Example usage for org.antlr.v4.runtime.tree RuleNode getSourceInterval

Introduction

In this page you can find the example usage for org.antlr.v4.runtime.tree RuleNode getSourceInterval.

Prototype

Interval getSourceInterval();

Source Link

Document

Return an Interval indicating the index in the TokenStream of the first and last token associated with this subtree.

Usage

From source file:net.klazz.symboliclua.conv.Converter.java

License:Open Source License

private List<String> whitespaces(RuleNode node) {
    List<String> ret = new ArrayList<>();
    Interval interval = node.getSourceInterval();
    int a = node.getParent() == null ? 0 : interval.a;
    int b = node.getParent() == null ? mStream.size() - 1 : interval.b;
    for (int i = 0; i < node.getChildCount(); i++) {
        ParseTree c = node.getChild(i);//from  w  w w.  jav a  2 s  .c  om
        Interval v = c.getSourceInterval();
        ret.add(a < v.a ? mStream.getText(new Interval(a, v.a - 1)) : "");
        a = v.b + 1;
    }
    ret.add(a <= b ? mStream.getText(new Interval(a, b)) : "");
    return ret;
}

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