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* Licensed under the Apache License, Version 2.0 (the "License"); *
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* http://www.apache.org/licenses/LICENSE-2.0 *
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package net.ion.rosetta;
/**
* Returns the source string of the part that matches the target parser.
*
* @author Ben Yu
*/
final class ReturnSourceParser extends Parser<String> {
private final Parser<?> parser;
ReturnSourceParser(Parser<?> parser) {
this.parser = parser;
}
@Override
boolean apply(ParseContext ctxt) {
int begin = ctxt.getIndex();
if (!parser.apply(ctxt)) {
return false;
}
ctxt.result = ctxt.source.subSequence(begin, ctxt.getIndex()).toString();
return true;
}
@Override
public String toString() {
return "source";
}
}