org.typemeta.funcj.parser

Interface SymSet<I>

Type Parameters:

I - the input stream symbol type

All Known Implementing Classes:

SymSet.All, SymSet.Empty, SymSet.Pred, SymSet.Union, SymSet.Value

public interface SymSet<I>

An abstraction for an immutable set of symbols.

A SymSet represents an immutable set of symbols, SymSets are used for First Sets and Follow Sets. Since the Combinators.value(Object) parsers are expressed using predictaes, SymSet has to support these directly else every symbol that satisfies the predicate, would have to be enumerated. Consequently, a SymSet is expressed as the composition of symbols, predicates and set operations.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	SymSet.All<I>
static class	SymSet.Empty<I>
static class	SymSet.Pred<I>
static class	SymSet.Type
static class	SymSet.Union<I>
static class	SymSet.Value<I>

Method Summary

Modifier and Type	Method and Description
static <I> SymSet<I>	all()
StringBuilder	append(StringBuilder sb)
static <I> SymSet<I>	empty()
boolean	matches(I value)
static <I> SymSet<I>	pred(String name, Functions.Predicate<I> pred)
SymSet.Type	type()
SymSet<I>	union(SymSet<I> rhs)
static <I> SymSet<I>	value(I value)

Method Detail

empty

static <I> SymSet<I> empty()

all

static <I> SymSet<I> all()

value

static <I> SymSet<I> value(I value)

pred

static <I> SymSet<I> pred(String name,
                          Functions.Predicate<I> pred)

type

SymSet.Type type()

matches

boolean matches(I value)

union

SymSet<I> union(SymSet<I> rhs)

append

StringBuilder append(StringBuilder sb)