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Merge pull request #17 from s-ludwig/nogc_get

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Make get!T nogc.
This commit is contained in:
Sönke Ludwig 2018-10-22 23:59:37 +02:00 committed by GitHub
parent c275902b78 6a08e1fea4
commit a61edbea4a
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 20 additions and 6 deletions
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26
source/taggedalgebraic.d
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@ -147,7 +147,7 @@ struct TaggedAlgebraic(U) if (is(U == union) || is(U == struct))
else static if (is(typeof(to!T(trustedGet!(fieldNames[i]))))) {
return to!T(trustedGet!(fieldNames[i]));
} else {
assert(false, "Cannot cast a " ~ m_kind.to!string
assert(false, "Cannot cast a " ~ fieldNames[i]
~ " value of type " ~ FT.stringof ~ " to " ~ T.stringof);
}
}
@ -168,7 +168,7 @@ struct TaggedAlgebraic(U) if (is(U == union) || is(U == struct))
else static if (is(typeof(to!T(trustedGet!(fieldNames[i]))))) {
return to!T(trustedGet!(fieldNames[i]));
} else {
assert(false, "Cannot cast a " ~ m_kind.to!string
assert(false, "Cannot cast a " ~ fieldNames[i]
~ " value of type" ~ FT.stringof ~ " to " ~ T.stringof);
}
}
@ -223,13 +223,13 @@ struct TaggedAlgebraic(U) if (is(U == union) || is(U == struct))
}
///
unittest
@safe unittest
{
import taggedalgebraic;
struct Foo {
string name;
void bar() {}
void bar() @safe {}
}
union Base {
@ -778,17 +778,31 @@ static if (__VERSION__ >= 2072) {
ref inout(T) get(T, U)(ref inout(TaggedAlgebraic!U) ta)
{
import std.format : format;
assert(hasType!(T, U)(ta), () { scope (failure) assert(false); return format("Trying to get %s but have %s.", T.stringof, ta.kind); } ());
assert(hasType!(T, U)(ta), "Type mismatch!");
return ta.trustedGet!T;
}
/// ditto
inout(T) get(T, U)(inout(TaggedAlgebraic!U) ta)
{
import std.format : format;
assert(hasType!(T, U)(ta), () { scope (failure) assert(false); return format("Trying to get %s but have %s.", T.stringof, ta.kind); } ());
assert(hasType!(T, U)(ta), "Type mismatch!");
return ta.trustedGet!T;
}
@nogc @safe nothrow unittest {
struct Fields {
int a;
float b;
}
alias TA = TaggedAlgebraic!Fields;
auto ta = TA(1);
assert(ta.get!int == 1);
ta.get!int = 2;
assert(ta.get!int == 2);
ta = TA(1.0);
assert(ta.get!float == 1.0);
}
/** Calls a the given callback with the static type of the contained value.