* refactor std.zig.parser
* fix compiler crashing for some compile errors
* take advantage of @field in std.zig.ast
* move ast.NodeFoo to ast.Node.Foo
* comment preservation is more explicit
See #911
this has the downside of failing to print a stack trace
when the system is out of memory (maybe we could add a
FallbackAllocator which tries DirectAllocator and falls
back on the 200KB preallocated buffer).
but for the more common use case when the system is not
out of memory, but the debug info cannot fit in
std.debug.global_allocator, now stack traces will work.
this is the case for the self hosted compiler.
* More work on ensuring that each state only eat one token
* VarDecl parsing now constructs its node
* Handling all fn parsing in the same case
* Using eatToken instead of getNextToken where possible
* All tokenIdTo* now takes @TagType(Token.Id)
* Added a createToCtxLiteral function
* Removed the Optional state
* We now have an OptionalCtx instead of DestPtr
* OptionalCtx simulated return, instead of reverting states
* OptionalCtx is a lot less hacky, but is still a small footgun
* Trying to avoid consuming more than one token per state
* This is required, because of comments
* The C++ compiler allows comments between all tokens
* We therefor have to consume comment tokens between each state
* Reordered states so they are grouped in some logical fasion
Commands are now separated more precisely from one another. Arguments
are parsed mostly using a custom argument parser instead of manually.
This should be on parity feature-wise with the previous main.zig but
adds a few extra code-paths as well that were not yet implemented.
Subcommands are much more prominent and consistent. The first argument
is always a sub-command and then all following arguments refer to that
command. Different commands display there own usage messages and options
based on what they can do instead of a one-for-all usage message that
was only applicable for the build commands previously.
The `cc` command is added and is intended for driving a c compiler. See #490.
This is currently a wrapper over the system cc and assumes that it
exists, but it should suffice as a starting point.
