Bug 19292 – Mixin expressions should take an argument list the same as pragma(msg) does

Mixin expressions are currently limited to being strings: https://dlang.org/spec/expression.html#mixin_expressions While they should accept what the more flexible pragma(msg) does: https://dlang.org/spec/pragma.html#msg This will make more complex mixin expressions easier to write without depending on Phobos for formatting, and will run faster and require less memory for CTFE to evaluate.

Test case: int test() { return mixin("1", 2); } void testit() { static assert(test() == 12); }

Commits pushed to master at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/13a3a7141ef3eafab2f2c588d488bd109156d8f8 fix Issue 19292 - Mixin expressions should take an argument list the same as pragma(msg) does https://github.com/dlang/dmd/commit/93698003bd2d5c3299e13410f8f001031c36c88b Merge pull request #8808 from WalterBright/fix19192 fix Issue 19292 - Mixin expressions should take an argument list the …

For Mixin Statements: https://github.com/dlang/dmd/pull/8809

https://github.com/dlang/dmd/pull/8813 for Mixin Declarations

Commits pushed to master at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/95133cf592c8415c4b28b8193e09f4c933a00178 fix Issue 19292 - Mixin expressions should take an argument list the same as pragma(msg) does https://github.com/dlang/dmd/commit/2b68951f210e003ed447f482ebb41b7d134e4045 Merge pull request #8809 from WalterBright/fix19292-2 fix Issue 19292 part 2 - Mixin statements should take an argument list the …

Commits pushed to master at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/51b5d2197721d8d5c3f8057da4c28ffa861bcab6 fix Issue 19292 part 3 - Mixin Declarations https://github.com/dlang/dmd/commit/4ecb04ba590f543927365d53d2e1d274b9333e4d Merge pull request #8813 from WalterBright/fix19292-3 fix Issue 19292 part 3 - Mixin Declarations

Commit pushed to master at https://github.com/dlang/dlang.org https://github.com/dlang/dlang.org/commit/2b1e8ce197ad2f0adb7454b270a811ea41f0942b Merge pull request #2485 from WalterBright/mixin-args fix Issue 19292 - Mixin expressions should take an argument list

I like it! Really pargma-tic and will optimize many uses of mixin.

Why does this allow evaluating types as their stringof? That may be fine for a debug tool like pragma(msg, but it's horrible for a mixin because it does the very, very wrong thing. Ie. if you have a template with a parameter T instantiated with int, then if you decide to use it as a mixin argument, you'll get "int", not "T" - which is fine, but rapidly becomes not fine when it's a private type in another module.

dlang/dmd pull request #12339 "[dmd-cxx] Backport fixes and trivial features from upstream dmd" was merged into dmd-cxx: - 4cf3e2c00b7f7d636f50290db49efe618698d5c2 by Walter Bright: [dmd-cxx] fix Issue 19292 - Mixin expressions should take an argument list the same as pragma(msg) does https://github.com/dlang/dmd/pull/12339