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823 lines (742 loc) · 22.6 KB
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package fj.data;
import fj.Effect;
import fj.F;
import fj.P1;
import static fj.data.List.asString;
import static fj.data.List.fromString;
/**
* Functions that convert between data structure types.
*
* @version %build.number%
*/
public final class Conversions {
private Conversions() {
throw new UnsupportedOperationException();
}
// BEGIN List ->
/**
* A function that converts lists to arrays.
*
* @return A function that converts lists to arrays.
*/
public static <A> F<List<A>, Array<A>> List_Array() {
return new F<List<A>, Array<A>>() {
public Array<A> f(final List<A> as) {
return as.toArray();
}
};
}
/**
* A function that converts lists to streams.
*
* @return A function that converts lists to streams.
*/
public static <A> F<List<A>, Stream<A>> List_Stream() {
return new F<List<A>, Stream<A>>() {
public Stream<A> f(final List<A> as) {
return as.toStream();
}
};
}
/**
* A function that converts lists to options.
*
* @return A function that converts lists to options.
*/
public static <A> F<List<A>, Option<A>> List_Option() {
return new F<List<A>, Option<A>>() {
public Option<A> f(final List<A> as) {
return as.toOption();
}
};
}
/**
* A function that converts lists to eithers.
*
* @return A function that converts lists to eithers.
*/
public static <A, B> F<P1<A>, F<List<B>, Either<A, B>>> List_Either() {
return new F<P1<A>, F<List<B>, Either<A, B>>>() {
public F<List<B>, Either<A, B>> f(final P1<A> a) {
return new F<List<B>, Either<A, B>>() {
public Either<A, B> f(final List<B> bs) {
return bs.toEither(a);
}
};
}
};
}
/**
* A function that converts lists to strings.
*/
public static final F<List<Character>, String> List_String = new F<List<Character>, String>() {
public String f(final List<Character> cs) {
return asString(cs);
}
};
/**
* A function that converts lists to string buffers.
*/
public static final F<List<Character>, StringBuffer> List_StringBuffer = new F<List<Character>, StringBuffer>() {
public StringBuffer f(final List<Character> cs) {
return new StringBuffer(asString(cs));
}
};
/**
* A function that converts lists to string builders.
*/
public static final F<List<Character>, StringBuilder> List_StringBuilder = new F<List<Character>, StringBuilder>() {
public StringBuilder f(final List<Character> cs) {
return new StringBuilder(asString(cs));
}
};
// END List ->
// BEGIN Array ->
/**
* A function that converts arrays to lists.
*
* @return A function that converts arrays to lists.
*/
public static <A> F<Array<A>, List<A>> Array_List() {
return new F<Array<A>, List<A>>() {
public List<A> f(final Array<A> as) {
return as.toList();
}
};
}
/**
* A function that converts arrays to streams.
*
* @return A function that converts arrays to streams.
*/
public static <A> F<Array<A>, Stream<A>> Array_Stream() {
return new F<Array<A>, Stream<A>>() {
public Stream<A> f(final Array<A> as) {
return as.toStream();
}
};
}
/**
* A function that converts arrays to options.
*
* @return A function that converts arrays to options.
*/
public static <A> F<Array<A>, Option<A>> Array_Option() {
return new F<Array<A>, Option<A>>() {
public Option<A> f(final Array<A> as) {
return as.toOption();
}
};
}
/**
* A function that converts arrays to eithers.
*
* @return A function that converts arrays to eithers.
*/
public static <A, B> F<P1<A>, F<Array<B>, Either<A, B>>> Array_Either() {
return new F<P1<A>, F<Array<B>, Either<A, B>>>() {
public F<Array<B>, Either<A, B>> f(final P1<A> a) {
return new F<Array<B>, Either<A, B>>() {
public Either<A, B> f(final Array<B> bs) {
return bs.toEither(a);
}
};
}
};
}
/**
* A function that converts arrays to strings.
*/
public static final F<Array<Character>, String> Array_String = new F<Array<Character>, String>() {
public String f(final Array<Character> cs) {
final StringBuilder sb = new StringBuilder();
cs.foreach(new Effect<Character>() {
public void e(final Character c) {
sb.append(c);
}
});
return sb.toString();
}
};
/**
* A function that converts arrays to string buffers.
*/
public static final F<Array<Character>, StringBuffer> Array_StringBuffer = new F<Array<Character>, StringBuffer>() {
public StringBuffer f(final Array<Character> cs) {
final StringBuffer sb = new StringBuffer();
cs.foreach(new Effect<Character>() {
public void e(final Character c) {
sb.append(c);
}
});
return sb;
}
};
/**
* A function that converts arrays to string builders.
*/
public static final F<Array<Character>, StringBuilder> Array_StringBuilder =
new F<Array<Character>, StringBuilder>() {
public StringBuilder f(final Array<Character> cs) {
final StringBuilder sb = new StringBuilder();
cs.foreach(new Effect<Character>() {
public void e(final Character c) {
sb.append(c);
}
});
return sb;
}
};
// END Array ->
// BEGIN Stream ->
/**
* A function that converts streams to lists.
*
* @return A function that converts streams to lists.
*/
public static <A> F<Stream<A>, List<A>> Stream_List() {
return new F<Stream<A>, List<A>>() {
public List<A> f(final Stream<A> as) {
return as.toList();
}
};
}
/**
* A function that converts streams to arrays.
*
* @return A function that converts streams to arrays.
*/
public static <A> F<Stream<A>, Array<A>> Stream_Array() {
return new F<Stream<A>, Array<A>>() {
public Array<A> f(final Stream<A> as) {
return as.toArray();
}
};
}
/**
* A function that converts streams to options.
*
* @return A function that converts streams to options.
*/
public static <A> F<Stream<A>, Option<A>> Stream_Option() {
return new F<Stream<A>, Option<A>>() {
public Option<A> f(final Stream<A> as) {
return as.toOption();
}
};
}
/**
* A function that converts streams to eithers.
*
* @return A function that converts streams to eithers.
*/
public static <A, B> F<P1<A>, F<Stream<B>, Either<A, B>>> Stream_Either() {
return new F<P1<A>, F<Stream<B>, Either<A, B>>>() {
public F<Stream<B>, Either<A, B>> f(final P1<A> a) {
return new F<Stream<B>, Either<A, B>>() {
public Either<A, B> f(final Stream<B> bs) {
return bs.toEither(a);
}
};
}
};
}
/**
* A function that converts streams to strings.
*/
public static final F<Stream<Character>, String> Stream_String = new F<Stream<Character>, String>() {
public String f(final Stream<Character> cs) {
final StringBuilder sb = new StringBuilder();
cs.foreach(new Effect<Character>() {
public void e(final Character c) {
sb.append(c);
}
});
return sb.toString();
}
};
/**
* A function that converts streams to string buffers.
*/
public static final F<Stream<Character>, StringBuffer> Stream_StringBuffer =
new F<Stream<Character>, StringBuffer>() {
public StringBuffer f(final Stream<Character> cs) {
final StringBuffer sb = new StringBuffer();
cs.foreach(new Effect<Character>() {
public void e(final Character c) {
sb.append(c);
}
});
return sb;
}
};
/**
* A function that converts streams to string builders.
*/
public static final F<Stream<Character>, StringBuilder> Stream_StringBuilder =
new F<Stream<Character>, StringBuilder>() {
public StringBuilder f(final Stream<Character> cs) {
final StringBuilder sb = new StringBuilder();
cs.foreach(new Effect<Character>() {
public void e(final Character c) {
sb.append(c);
}
});
return sb;
}
};
// END Stream ->
// BEGIN Option ->
/**
* A function that converts options to lists.
*
* @return A function that converts options to lists.
*/
public static <A> F<Option<A>, List<A>> Option_List() {
return new F<Option<A>, List<A>>() {
public List<A> f(final Option<A> o) {
return o.toList();
}
};
}
/**
* A function that converts options to arrays.
*
* @return A function that converts options to arrays.
*/
public static <A> F<Option<A>, Array<A>> Option_Array() {
return new F<Option<A>, Array<A>>() {
public Array<A> f(final Option<A> o) {
return o.toArray();
}
};
}
/**
* A function that converts options to streams.
*
* @return A function that converts options to streams.
*/
public static <A> F<Option<A>, Stream<A>> Option_Stream() {
return new F<Option<A>, Stream<A>>() {
public Stream<A> f(final Option<A> o) {
return o.toStream();
}
};
}
/**
* A function that converts options to eithers.
*
* @return A function that converts options to eithers.
*/
public static <A, B> F<P1<A>, F<Option<B>, Either<A, B>>> Option_Either() {
return new F<P1<A>, F<Option<B>, Either<A, B>>>() {
public F<Option<B>, Either<A, B>> f(final P1<A> a) {
return new F<Option<B>, Either<A, B>>() {
public Either<A, B> f(final Option<B> o) {
return o.toEither(a);
}
};
}
};
}
/**
* A function that converts options to strings.
*/
public static final F<Option<Character>, String> Option_String = new F<Option<Character>, String>() {
public String f(final Option<Character> o) {
return asString(o.toList());
}
};
/**
* A function that converts options to string buffers.
*/
public static final F<Option<Character>, StringBuffer> Option_StringBuffer =
new F<Option<Character>, StringBuffer>() {
public StringBuffer f(final Option<Character> o) {
return new StringBuffer(asString(o.toList()));
}
};
/**
* A function that converts options to string builders.
*/
public static final F<Option<Character>, StringBuilder> Option_StringBuilder =
new F<Option<Character>, StringBuilder>() {
public StringBuilder f(final Option<Character> o) {
return new StringBuilder(asString(o.toList()));
}
};
// END Option ->
// BEGIN Either ->
/**
* A function that converts eithers to lists.
*
* @return A function that converts eithers to lists.
*/
public static <A, B> F<Either<A, B>, List<A>> Either_ListA() {
return new F<Either<A, B>, List<A>>() {
public List<A> f(final Either<A, B> e) {
return e.left().toList();
}
};
}
/**
* A function that converts eithers to lists.
*
* @return A function that converts eithers to lists.
*/
public static <A, B> F<Either<A, B>, List<B>> Either_ListB() {
return new F<Either<A, B>, List<B>>() {
public List<B> f(final Either<A, B> e) {
return e.right().toList();
}
};
}
/**
* A function that converts eithers to arrays.
*
* @return A function that converts eithers to arrays.
*/
public static <A, B> F<Either<A, B>, Array<A>> Either_ArrayA() {
return new F<Either<A, B>, Array<A>>() {
public Array<A> f(final Either<A, B> e) {
return e.left().toArray();
}
};
}
/**
* A function that converts eithers to arrays.
*
* @return A function that converts eithers to arrays.
*/
public static <A, B> F<Either<A, B>, Array<B>> Either_ArrayB() {
return new F<Either<A, B>, Array<B>>() {
public Array<B> f(final Either<A, B> e) {
return e.right().toArray();
}
};
}
/**
* A function that converts eithers to streams.
*
* @return A function that converts eithers to streams.
*/
public static <A, B> F<Either<A, B>, Stream<A>> Either_StreamA() {
return new F<Either<A, B>, Stream<A>>() {
public Stream<A> f(final Either<A, B> e) {
return e.left().toStream();
}
};
}
/**
* A function that converts eithers to streams.
*
* @return A function that converts eithers to streams.
*/
public static <A, B> F<Either<A, B>, Stream<B>> Either_StreamB() {
return new F<Either<A, B>, Stream<B>>() {
public Stream<B> f(final Either<A, B> e) {
return e.right().toStream();
}
};
}
/**
* A function that converts eithers to options.
*
* @return A function that converts eithers to options.
*/
public static <A, B> F<Either<A, B>, Option<A>> Either_OptionA() {
return new F<Either<A, B>, Option<A>>() {
public Option<A> f(final Either<A, B> e) {
return e.left().toOption();
}
};
}
/**
* A function that converts eithers to options.
*
* @return A function that converts eithers to options.
*/
public static <A, B> F<Either<A, B>, Option<B>> Either_OptionB() {
return new F<Either<A, B>, Option<B>>() {
public Option<B> f(final Either<A, B> e) {
return e.right().toOption();
}
};
}
/**
* A function that converts eithers to strings.
*
* @return A function that converts eithers to strings.
*/
public static <B> F<Either<Character, B>, String> Either_StringA() {
return new F<Either<Character, B>, String>() {
public String f(final Either<Character, B> e) {
return asString(e.left().toList());
}
};
}
/**
* A function that converts eithers to strings.
*
* @return A function that converts eithers to strings.
*/
public static <A> F<Either<A, Character>, String> Either_StringB() {
return new F<Either<A, Character>, String>() {
public String f(final Either<A, Character> e) {
return asString(e.right().toList());
}
};
}
/**
* A function that converts eithers to string buffers.
*
* @return A function that converts eithers to string buffers.
*/
public static <B> F<Either<Character, B>, StringBuffer> Either_StringBufferA() {
return new F<Either<Character, B>, StringBuffer>() {
public StringBuffer f(final Either<Character, B> e) {
return new StringBuffer(asString(e.left().toList()));
}
};
}
/**
* A function that converts eithers to string buffers.
*
* @return A function that converts eithers to string buffers.
*/
public static <A> F<Either<A, Character>, StringBuffer> Either_StringBufferB() {
return new F<Either<A, Character>, StringBuffer>() {
public StringBuffer f(final Either<A, Character> e) {
return new StringBuffer(asString(e.right().toList()));
}
};
}
/**
* A function that converts eithers to string builders.
*
* @return A function that converts eithers to string builders.
*/
public static <B> F<Either<Character, B>, StringBuilder> Either_StringBuilderA() {
return new F<Either<Character, B>, StringBuilder>() {
public StringBuilder f(final Either<Character, B> e) {
return new StringBuilder(asString(e.left().toList()));
}
};
}
/**
* A function that converts eithers to string builders.
*
* @return A function that converts eithers to string builders.
*/
public static <A> F<Either<A, Character>, StringBuilder> Either_StringBuilderB() {
return new F<Either<A, Character>, StringBuilder>() {
public StringBuilder f(final Either<A, Character> e) {
return new StringBuilder(asString(e.right().toList()));
}
};
}
// END Either ->
// BEGIN String ->
/**
* A function that converts strings to lists.
*/
public static final F<String, List<Character>> String_List = new F<String, List<Character>>() {
public List<Character> f(final String s) {
return fromString(s);
}
};
/**
* A function that converts strings to arrays.
*/
public static final F<String, Array<Character>> String_Array = new F<String, Array<Character>>() {
public Array<Character> f(final String s) {
return fromString(s).toArray();
}
};
/**
* A function that converts strings to options.
*/
public static final F<String, Option<Character>> String_Option = new F<String, Option<Character>>() {
public Option<Character> f(final String s) {
return fromString(s).toOption();
}
};
/**
* A function that converts string to eithers.
*
* @return A function that converts string to eithers.
*/
public static <A> F<P1<A>, F<String, Either<A, Character>>> String_Either() {
return new F<P1<A>, F<String, Either<A, Character>>>() {
public F<String, Either<A, Character>> f(final P1<A> a) {
return new F<String, Either<A, Character>>() {
public Either<A, Character> f(final String s) {
return fromString(s).toEither(a);
}
};
}
};
}
/**
* A function that converts strings to streams.
*/
public static final F<String, Stream<Character>> String_Stream = new F<String, Stream<Character>>() {
public Stream<Character> f(final String s) {
return fromString(s).toStream();
}
};
/**
* A function that converts strings to string buffers.
*/
public static final F<String, StringBuffer> String_StringBuffer = new F<String, StringBuffer>() {
public StringBuffer f(final String s) {
return new StringBuffer(s);
}
};
/**
* A function that converts strings to string builders.
*/
public static final F<String, StringBuilder> String_StringBuilder = new F<String, StringBuilder>() {
public StringBuilder f(final String s) {
return new StringBuilder(s);
}
};
// END String ->
// BEGIN StringBuffer ->
/**
* A function that converts string buffers to lists.
*/
public static final F<StringBuffer, List<Character>> StringBuffer_List = new F<StringBuffer, List<Character>>() {
public List<Character> f(final StringBuffer s) {
return fromString(s.toString());
}
};
/**
* A function that converts string buffers to arrays.
*/
public static final F<StringBuffer, Array<Character>> StringBuffer_Array = new F<StringBuffer, Array<Character>>() {
public Array<Character> f(final StringBuffer s) {
return fromString(s.toString()).toArray();
}
};
/**
* A function that converts string buffers to streams.
*/
public static final F<StringBuffer, Stream<Character>> StringBuffer_Stream =
new F<StringBuffer, Stream<Character>>() {
public Stream<Character> f(final StringBuffer s) {
return fromString(s.toString()).toStream();
}
};
/**
* A function that converts string buffers to options.
*/
public static final F<StringBuffer, Option<Character>> StringBuffer_Option =
new F<StringBuffer, Option<Character>>() {
public Option<Character> f(final StringBuffer s) {
return fromString(s.toString()).toOption();
}
};
/**
* A function that converts string buffers to eithers.
*
* @return A function that converts string buffers to eithers.
*/
public static <A> F<P1<A>, F<StringBuffer, Either<A, Character>>> StringBuffer_Either() {
return new F<P1<A>, F<StringBuffer, Either<A, Character>>>() {
public F<StringBuffer, Either<A, Character>> f(final P1<A> a) {
return new F<StringBuffer, Either<A, Character>>() {
public Either<A, Character> f(final StringBuffer s) {
return fromString(s.toString()).toEither(a);
}
};
}
};
}
/**
* A function that converts string buffers to strings.
*/
public static final F<StringBuffer, String> StringBuffer_String = new F<StringBuffer, String>() {
public String f(final StringBuffer s) {
return s.toString();
}
};
/**
* A function that converts string buffers to string builders.
*/
public static final F<StringBuffer, StringBuilder> StringBuffer_StringBuilder = new F<StringBuffer, StringBuilder>() {
public StringBuilder f(final StringBuffer s) {
return new StringBuilder(s);
}
};
// END StringBuffer ->
// BEGIN StringBuilder ->
/**
* A function that converts string builders to lists.
*/
public static final F<StringBuilder, List<Character>> StringBuilder_List = new F<StringBuilder, List<Character>>() {
public List<Character> f(final StringBuilder s) {
return fromString(s.toString());
}
};
/**
* A function that converts string builders to arrays.
*/
public static final F<StringBuilder, Array<Character>> StringBuilder_Array =
new F<StringBuilder, Array<Character>>() {
public Array<Character> f(final StringBuilder s) {
return fromString(s.toString()).toArray();
}
};
/**
* A function that converts string builders to streams.
*/
public static final F<StringBuilder, Stream<Character>> StringBuilder_Stream =
new F<StringBuilder, Stream<Character>>() {
public Stream<Character> f(final StringBuilder s) {
return fromString(s.toString()).toStream();
}
};
/**
* A function that converts string builders to options.
*/
public static final F<StringBuilder, Option<Character>> StringBuilder_Option =
new F<StringBuilder, Option<Character>>() {
public Option<Character> f(final StringBuilder s) {
return fromString(s.toString()).toOption();
}
};
/**
* A function that converts string builders to eithers.
*
* @return A function that converts string builders to eithers.
*/
public static <A> F<P1<A>, F<StringBuilder, Either<A, Character>>> StringBuilder_Either() {
return new F<P1<A>, F<StringBuilder, Either<A, Character>>>() {
public F<StringBuilder, Either<A, Character>> f(final P1<A> a) {
return new F<StringBuilder, Either<A, Character>>() {
public Either<A, Character> f(final StringBuilder s) {
return fromString(s.toString()).toEither(a);
}
};
}
};
}
/**
* A function that converts string builders to strings.
*/
public static final F<StringBuilder, String> StringBuilder_String = new F<StringBuilder, String>() {
public String f(final StringBuilder s) {
return s.toString();
}
};
/**
* A function that converts string builders to string buffers.
*/
public static final F<StringBuilder, StringBuffer> StringBuilder_StringBuffer = new F<StringBuilder, StringBuffer>() {
public StringBuffer f(final StringBuilder s) {
return new StringBuffer(s);
}
};
// END StringBuilder ->
}