motiejus/zig
1
Fork 0
Code Releases Activity

builtin: Add zig_version

Browse Source 
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
This commit is contained in:
Jay Petacat
2021-01-04 23:48:34 -05:00
committed by Andrew Kelley
parent 5c49a137d5
commit a0ad2dee6a
2 changed files with 16 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
lib/std/SemanticVersion.zig
View File

@@ -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");
}