- Introduce new `Path` type and an array of build paths on the build context.
- Resolve input and output paths/files early (before parsing).
- Error early if inputs are missing or outputs are directories.
- Plumb new file path generation into linker stage instead of its adhoc method.
TODO:
- Remove more adhoc file path generation in parser and linker stage.
- Make intermediate object file generation use new path system.
- Round out and robustify Path helper functions.
A package has canonically always been a directory, but odin allowing you to build a single-file package confused newcomers who didn't understand why they could then not access variables and procedures from another file in the same directory.
This change disallows building single-file packages by default, requiring the `-file` flag to acknowledge you understand the nuance.
`-help` for these commands also clarifies the difference.
```
W:\Odin>odin build -help
odin is a tool for managing Odin source code
Usage:
odin build [arguments]
build Compile directory of .odin files as an executable.
One must contain the program's entry point, all must be in the same package.
Use `-file` to build a single file instead.
Examples:
odin build . # Build package in current directory
odin build <dir> # Build package in <dir>
odin build filename.odin -file # Build single-file package, must contain entry point.
Flags
-file
Tells `odin build` to treat the given file as a self-contained package.
This means that `<dir>/a.odin` won't have access to `<dir>/b.odin`'s contents.
```
```
W:\Odin>odin run examples\demo\demo.odin
ERROR: `odin run` takes a package as its first argument.
Did you mean `odin run examples\demo\demo.odin -file`?
The `-file` flag tells it to treat a file as a self-contained package.
```
This adds a feature to `union` which requires all the variants to have a `nil` value and on assign to the union, checks whether that value is `nil` or not. If the value is `nil`, the union will be `nil` (thus sharing the `nil` value)
Inits `o->value` in `check_expr_base_internal()` so doesn't accidentally
use last (the proc lit was being set to that of previous string)
Adds test to "tests/issues" and changes CI to use new "run" shells
Changes lb_build_if_stmt() to return null lbValue if condition is
cmpAnd, cmpOr or non-const neg and check in lb_build_if_stmt()
to avoid short circuiting if that's the case
Adds test to "tests/issues" and adds step in CI to check this dir
