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Refactor allSatisfy, anySatisfy, staticIndexOf

This commit is contained in:
Eugen Wissner 2019-04-03 18:34:39 +02:00
parent b55bb767e5
commit d55eac3bac
1 changed files with 16 additions and 54 deletions
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70
meta/tanya/meta/metafunction.d
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@ -798,22 +798,7 @@ alias AliasSeq(Args...) = Args;
* Returns: $(D_KEYWORD true) if all the items of $(D_PARAM L) satisfy * Returns: $(D_KEYWORD true) if all the items of $(D_PARAM L) satisfy
* $(D_PARAM F), $(D_KEYWORD false) otherwise. * $(D_PARAM F), $(D_KEYWORD false) otherwise.
*/ */
template allSatisfy(alias F, L...) enum bool allSatisfy(alias F, L...) = Filter!(templateNot!F, L).length == 0;
if (__traits(isTemplate, F))
{
static if (L.length == 0)
{
enum bool allSatisfy = true;
}
else static if (F!(L[0]))
{
enum bool allSatisfy = allSatisfy!(F, L[1 .. $]);
}
else
{
enum bool allSatisfy = false;
}
}
/// ///
@nogc nothrow pure @safe unittest @nogc nothrow pure @safe unittest
@ -836,22 +821,7 @@ if (__traits(isTemplate, F))
* Returns: $(D_KEYWORD true) if any of the items of $(D_PARAM L) satisfy * Returns: $(D_KEYWORD true) if any of the items of $(D_PARAM L) satisfy
* $(D_PARAM F), $(D_KEYWORD false) otherwise. * $(D_PARAM F), $(D_KEYWORD false) otherwise.
*/ */
template anySatisfy(alias F, L...) enum bool anySatisfy(alias F, L...) = Filter!(F, L).length != 0;
if (__traits(isTemplate, F))
{
static if (L.length == 0)
{
enum bool anySatisfy = false;
}
else static if (F!(L[0]))
{
enum bool anySatisfy = true;
}
else
{
enum bool anySatisfy = anySatisfy!(F, L[1 .. $]);
}
}
/// ///
@nogc nothrow pure @safe unittest @nogc nothrow pure @safe unittest
@ -861,22 +831,19 @@ if (__traits(isTemplate, F))
static assert(!anySatisfy!(isSigned, uint, ushort, ulong)); static assert(!anySatisfy!(isSigned, uint, ushort, ulong));
} }
private template indexOf(ptrdiff_t i, Args...) private template indexOf(Args...)
if (Args.length > 0)
{ {
static if (Args.length == 1) static foreach (i, Arg; Args[1 .. $])
{
static if (!is(typeof(indexOf) == ptrdiff_t) && isEqual!(Args[0], Arg))
{
enum ptrdiff_t indexOf = i;
}
}
static if (!is(typeof(indexOf) == ptrdiff_t))
{ {
enum ptrdiff_t indexOf = -1; enum ptrdiff_t indexOf = -1;
} }
else static if (isEqual!(Args[0 .. 2]))
{
enum ptrdiff_t indexOf = i;
}
else
{
enum ptrdiff_t indexOf = indexOf!(i + 1,
AliasSeq!(Args[0], Args[2 .. $]));
}
} }
/** /**
@ -891,13 +858,13 @@ if (Args.length > 0)
*/ */
template staticIndexOf(T, L...) template staticIndexOf(T, L...)
{ {
enum ptrdiff_t staticIndexOf = indexOf!(0, AliasSeq!(T, L)); enum ptrdiff_t staticIndexOf = indexOf!(T, L);
} }
/// ditto /// ditto
template staticIndexOf(alias T, L...) template staticIndexOf(alias T, L...)
{ {
enum ptrdiff_t staticIndexOf = indexOf!(0, AliasSeq!(T, L)); enum ptrdiff_t staticIndexOf = indexOf!(T, L);
} }
/// ///
@ -920,16 +887,10 @@ template staticIndexOf(alias T, L...)
* Returns: $(D_KEYWORD true) if $(D_PARAM T) can be found in $(D_PARAM L), * Returns: $(D_KEYWORD true) if $(D_PARAM T) can be found in $(D_PARAM L),
* $(D_KEYWORD false) otherwise. * $(D_KEYWORD false) otherwise.
*/ */
template canFind(T, L...) enum bool canFind(T, L...) = staticIndexOf!(T, L) != -1;
{
enum bool canFind = indexOf!(0, AliasSeq!(T, L)) != -1;
}
/// ditto /// ditto
template canFind(alias T, L...) enum bool canFind(alias T, L...) = staticIndexOf!(T, L) != -1;
{
enum bool canFind = indexOf!(0, AliasSeq!(T, L)) != -1;
}
/// ///
@nogc nothrow pure @safe unittest @nogc nothrow pure @safe unittest
@ -1617,6 +1578,7 @@ template EraseAll(alias T, L...)
* $(D_PARAM pred). * $(D_PARAM pred).
*/ */
template Filter(alias pred, L...) template Filter(alias pred, L...)
if (__traits(isTemplate, pred))
{ {
static if (L.length == 0) static if (L.length == 0)
{ {