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Allow arbitrary arrays in build options

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This commit is contained in:
Aaron Sikes 2021-10-23 13:30:20 -04:00
parent f98f5e0bcd
commit 72039f2349
1 changed files with 32 additions and 1 deletions
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33
lib/std/build/OptionsStep.zig
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@ -124,7 +124,27 @@ pub fn addOption(self: *OptionsStep, comptime T: type, name: []const u8, value:
},
else => {},
}
out.print("pub const {}: {s} = {};\n", .{ std.zig.fmtId(name), @typeName(T), value }) catch unreachable;
out.print("pub const {}: {s} = ", .{ std.zig.fmtId(name), @typeName(T) }) catch unreachable;
printLiteral(out, value, 0) catch unreachable;
out.writeAll(";\n") catch unreachable;
}
fn printLiteral(out: anytype, val: anytype, indent: u8) !void {
const T = @TypeOf(val);
switch (@typeInfo(T)) {
.Array => {
// TODO: non-recursive?
try out.print("{s}{{\n", .{@typeName(T)});
for (val) |item| {
try out.writeByteNTimes(' ', indent + 4);
try printLiteral(out, item, indent + 4);
try out.writeAll(",\n");
}
try out.writeByteNTimes(' ', indent);
try out.writeAll("}");
},
else => try out.print("{any}", .{val}),
}
}
/// The value is the path in the cache dir.
@ -246,6 +266,7 @@ test "OptionsStep" {
options.addOption(?usize, "option2", null);
options.addOption([]const u8, "string", "zigisthebest");
options.addOption(?[]const u8, "optional_string", null);
options.addOption([2][2]u16, "array", [2][2]u16{ [2]u16{ 300, 200 }, [2]u16{ 300, 200 } });
options.addOption(KeywordEnum, "keyword_enum", .@"0.8.1");
options.addOption(std.builtin.Version, "version", try std.builtin.Version.parse("0.1.2"));
options.addOption(std.SemanticVersion, "semantic_version", try std.SemanticVersion.parse("0.1.2-foo+bar"));
@ -255,6 +276,16 @@ test "OptionsStep" {
\\pub const option2: ?usize = null;
\\pub const string: []const u8 = "zigisthebest";
\\pub const optional_string: ?[]const u8 = null;
\\pub const array: [2][2]u16 = [2][2]u16{
\\ [2]u16{
\\ 300,
\\ 200,
\\ },
\\ [2]u16{
\\ 300,
\\ 200,
\\ },
\\};
\\pub const KeywordEnum = enum {
\\ @"0.8.1",
\\};