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std.build: simpler fix to options implementation

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Instead of messing with ArrayList and more logic, just unwrap the error
of toOwnedSlice().
This commit is contained in:
Andrew Kelley 2022-11-30 13:22:04 -07:00
parent 747f64b3fb
commit abd9089aa6
1 changed files with 3 additions and 3 deletions
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6
lib/std/build.zig
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@ -523,7 +523,7 @@ pub const Builder = struct {
const name = self.dupe(name_raw);
const description = self.dupe(description_raw);
const type_id = comptime typeToEnum(T);
const enum_options: ?ArrayList([]const u8) = if (type_id == .@"enum") blk: {
const enum_options = if (type_id == .@"enum") blk: {
const fields = comptime std.meta.fields(T);
var options = ArrayList([]const u8).initCapacity(self.allocator, fields.len) catch unreachable;
@ -531,13 +531,13 @@ pub const Builder = struct {
options.appendAssumeCapacity(field.name);
}
break :blk options;
break :blk options.toOwnedSlice() catch unreachable;
} else null;
const available_option = AvailableOption{
.name = name,
.type_id = type_id,
.description = description,
.enum_options = if (enum_options) |options| options.items else null,
.enum_options = enum_options,
};
if ((self.available_options_map.fetchPut(name, available_option) catch unreachable) != null) {
panic("Option '{s}' declared twice", .{name});