feat: if statements #24
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This commit adds the ability to parse if else statements to the parser. There is no inferencing or code generation yet.
We introduces the never type to represent a type that is never
instantiated. This is useful for cases where a branch of an if statement
never returns for instance:
```mun
let b = if a {
3
} else {
return;
}
```
In the above case `b` should be assigned the type `int` because the then
branch has type `int` and the else branch has type `never`.
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This commit adds the `MissingElseBranch` and `IncompatibleBranch` diagnostics to inferencing.
The dlls in this repo are build artifacts and should not reside with the source. Where applicable add them manually.
This was referenced Oct 29, 2019
Wodann
reviewed
Oct 30, 2019
Wodann
approved these changes
Oct 30, 2019
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