It used to be that usingnamespace was only allowed at top level. This
made it OK to put the state inside the AST node data structure. However,
now usingnamespace can occur inside any aggregate data structure, and
therefore the state must be in the TopLevelDeclaration rather than in
the AST node.
There were two other problems with the usingnamespace implementation:
* It was passing the wrong destination ScopeDecl, so it could cause an
incorrect error such as "import of file outside package path".
* When doing `usingnamespace` on a file that already had
`pub usingnamespace` in it would "steal" the usingnamespace, causing
incorrect "use of undeclared identifier" errors in the target file.
closes#2632closes#2580
Zig provides a libc for the GNU C ABI on Windows, and cannot (at least
yet) provide one for the MSVC C ABI. However when not linking libc,
zig has no problem targeting MSVC as the C ABI. And this should be the
default.
Related: #2911
on a simple test input:
original utf8ToUtf16Le: elapsed: 111384483 ns (111 ms)
new utf8ToUtf16Le: elapsed: 138570 ns (0 ms)
it's 800x faster in debug mode and ~4500x faster in release-fast mode.
this was slowing down installation of files on windows in build scripts.
also start prefering NtDll API. so far:
* NtQueryInformationFile
* NtClose
adds a performance workaround for windows unicode conversion. but that
should probably be removed before merging
This moves the installation of shipped source files from large
CMakeLists.txt lists to zig build recursive directory installation.
On my computer a cmake `make install` takes 2.4 seconds even when it has
to do nothing, and prints a lot of unnecessary lines to stdout that say
"up-to-date: [some file it is installing]".
After this commit, the default output of `make` is down to 1
second, and it does not print any junk to stdout. Further, a `make
install` is no longer required and `make` is sufficient.
This closes#2874.
It also closes#2585. `make` now always invokes `zig build` for
installing files and libuserland.a, and zig's own caching system makes
that go fast.
