From a0ad2dee6a0b3bb7fd04032f6113206f7b4e73eb Mon Sep 17 00:00:00 2001 From: Jay Petacat Date: Mon, 4 Jan 2021 23:48:34 -0500 Subject: builtin: Add zig_version This will enable code to perform version checks and make it easier to support multiple versions of Zig. Within the SemVer implementation, an intermediate value needed to be coerced to a slice to workaround a comptime bug. Closes #6466 --- lib/std/SemanticVersion.zig | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'lib/std') diff --git a/lib/std/SemanticVersion.zig b/lib/std/SemanticVersion.zig index dc9e6d8572..76767de8b5 100644 --- a/lib/std/SemanticVersion.zig +++ b/lib/std/SemanticVersion.zig @@ -102,7 +102,7 @@ pub fn parse(text: []const u8) !Version { if (extra_index == null) return ver; // Slice optional pre-release or build metadata components. - const extra = text[extra_index.?..text.len]; + const extra: []const u8 = text[extra_index.?..text.len]; if (extra[0] == '-') { const build_index = std.mem.indexOfScalar(u8, extra, '+'); ver.pre = extra[1..(build_index orelse extra.len)]; @@ -293,3 +293,12 @@ fn testFmt(expected: []const u8, comptime template: []const u8, args: anytype) ! std.debug.warn("\n======================================\n", .{}); return error.TestFailed; } + +test "zig_version" { + // An approximate Zig build that predates this test. + const older_version = .{ .major = 0, .minor = 8, .patch = 0, .pre = "dev.874" }; + + // Simulated compatibility check using Zig version. + const compatible = comptime @import("builtin").zig_version.order(older_version) == .gt; + if (!compatible) @compileError("zig_version test failed"); +} -- cgit v1.2.3