Function declarations [src]

Instead of this function, prefer to use e.g. @typeInfo(foo).@"struct".decls directly when you know what kind of type it is.

Prototype

pub fn declarations(comptime T: type) []const Type.Declaration

Parameters

T: type

Example

 test declarations {
    const E1 = enum {
        A,

        pub fn a() void {}
    };
    const S1 = struct {
        pub fn a() void {}
    };
    const U1 = union {
        b: u8,

        pub fn a() void {}
    };
    const O1 = opaque {
        pub fn a() void {}
    };

    const decls = comptime [_][]const Type.Declaration{
        declarations(E1),
        declarations(S1),
        declarations(U1),
        declarations(O1),
    };

    inline for (decls) |decl| {
        try testing.expect(decl.len == 1);
        try testing.expect(comptime mem.eql(u8, decl[0].name, "a"));
    }
}

Source

  pub fn declarations(comptime T: type) []const Type.Declaration {
    return switch (@typeInfo(T)) {
        .@"struct" => |info| info.decls,
        .@"enum" => |info| info.decls,
        .@"union" => |info| info.decls,
        .@"opaque" => |info| info.decls,
        else => @compileError("Expected struct, enum, union, or opaque type, found '" ++ @typeName(T) ++ "'"),
    };
}  