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Java > Open Source Codes > jfun > parsec > ManyAccumMinParser


1 /**
2  *
3  */
4 package jfun.parsec;
5
6 final class ManyAccumMinParser<R, From, To, A extends From> extends Parser<R> {
7   private final Accumulatable<From, To> accm;
8
9   private final int min;
10
11   private final Parser<A> p;
12
13   ManyAccumMinParser(String JavaDoc n, Accumulatable<From, To> accm, int min, Parser<A> p) {
14     super(n);
15     this.accm = accm;
16     this.min = min;
17     this.p = p;
18   }
19
20   boolean apply(final ParseContext ctxt) {
21     final Accumulator<From, To> acc = accm.getAccumulator();
22     if (!ParserInternals.accm_repeat(acc, min, p, ctxt))
23       return false;
24     if (ParserInternals.accm_many(acc, p, ctxt))
25       return ParserInternals.returnValue(acc.getResult(), ctxt);
26     else
27       return false;
28   }
29 }
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