* Fix autocompletion of if-then-else expressions
* Fix a potential crash surrounding improper use of `%*` in a string
format specifier
* All Python scripts now invoke Python via `python3` rather than
`python`.
* Improved error handling for string interpolation with too many
arguments.
Co-authored-by: Arseny Kapoulkine <arseny.kapoulkine@gmail.com>
Co-authored-by: Vyacheslav Egorov <vegorov@roblox.com>
Having the location where the table type is defined is useful for
tracking other info such as documentation comments, or pointing back
through "Go To Definition" functionality etc.
This adds in the required info
Closes#718
We pass an extra `contents` parameter to the string callback function to
provide contextual information for autocomplete.
Because we support both string literals and simple interpolated strings,
we pass it through as a `std::string` value.
This is a breaking change
* Fixed garbage data in module scopes when type graph is not retained
* LOP_MOVE with the same source and target registers is no longer
generated (Fixes https://github.com/Roblox/luau/issues/793)
### Problem
ubuntu-latest was updated to 22.04 which removes clang++-10 we used for
coverage stats and creates a pre-compiled binary that requires a glibc
upgrade https://github.com/Roblox/luau/issues/773
### Solution
Pin to ubuntu-20.04 using multi-value matrix configurations.
In coverage configuration, we use clang++-10 once again.
* Fixed unions of `nil` types displaying as `?`
* Internal normalization now handles class types which can make
previously failing (incorrectly) sub-typing checks to succeed
* The AST JSON encoder will now stringify infinity and NaN according to the JSON5 spec using the tokens `Infinity`, `-Infinity`, and `NaN`.
* Improve autocompletion of table keys if the type of that key is a union of string singletons.
This is useful in particular if redefine `LUAI_MAXCSTACK` to a higher
value than the current one (8000).
Ie. passing `-D LUAI_MAXCSTACK=1000000` would not work as overlaps with
`LUA_REGISTRYINDEX` and below.
* Type mismatch errors now mention if unification failed in covariant or
invariant context, to explain why sometimes derived class can't be
converted to base class or why `T` can't be converted into `T?` and so
on
* Class type indexing is no longer an error in non-strict mode (still an
error in strict mode)
* Fixed cyclic type packs not being displayed in the type
* Added an error when unrelated types are compared with `==`/`~=`
* Fixed false positive errors involving sub-type tests an `never` type
* Fixed miscompilation of multiple assignment statements (Fixes
https://github.com/Roblox/luau/issues/754)
* Type inference stability improvements
Github fails to find clang++-10.
Since we install llvm without a specific version number, we shouldn't
use clang++-10 with a version number.
I tried installing llvm-10, but that package is not available on github
(any more?).
Currently, the metatable of a class type var is not correctly checked to
see if it is callable (i.e. has a `__call` metatable).
We resolve this issue by checking the metatable in `checkCallOverload`
Fixes#756
Co-authored-by: vegorov-rbx <75688451+vegorov-rbx@users.noreply.github.com>
Closes#631
Performs a "two pass" approach, where we first call `prototype` on the
class definition.
The prototype phase checks for errors and creates a base CTV for the
class, which other types can then reference.
The second `check` phase fills it out with all the defined
properties/methods
Co-authored-by: vegorov-rbx <75688451+vegorov-rbx@users.noreply.github.com>
String interpolation autocomplete was not working and was just using
default autocomplete. This fixes it so that inside a string it is
treated as normal, and inside an expression it suggests expression level
autocomplete.
Also fixes the range, which was previously just the first lexeme.
* Type inference of `a and b` and `a or b` has been improved (Fixes
https://github.com/Roblox/luau/issues/730)
* Improved error message when `for ... in x` loop iterates over a value
that could be 'nil'
* Return type of `next` not includes 'nil' (Fixes
https://github.com/Roblox/luau/issues/706)
* Improved type inference of `string` type
* Luau library table type names are now reported as `typeof(string)`/etc
instead of just `string` which was misleading
* Added parsing error when optional type alias type parameter wasn't
provided after `=` token
* Improved tagged union type refinement in conditional expressions, type
in `else` branch should no longer include previously handled union
options
* Reduce the stack utilization of type checking.
* Improve the error message that's reported when a delimiting comma is
missing from a table literal. eg
```lua
local t = {
first = 1
second = 2
}```
