Any semantics, lvalue allocates on stack

This commit is contained in:
Krzosa Karol
2022-10-09 23:42:02 +02:00
parent 9ad2da03c8
commit 13f2f20ea6
5 changed files with 44 additions and 18 deletions

View File

@@ -1,3 +1,21 @@
/*
Language enables implementing dynamic typing using operator overloads and
the Any type. Any type is a bundle of typeid and a pointer to value.
Current semantics of the Any dictate that values that get assigned to
Any values, they get implicitly converted to a pointer and a type.
a: Any = 10 // This sentence allocates 10 on the stack
a: Any = a + 10 // This also allocates on stack
a: Any = a // Does not allocate, takes pointer to a
a: Any = array[1] // Does not allocate, takes pointer to value in array
The general picture you can take from this is that if we are referencing
something it will take a pointer to it.
If the operation results in a new value it will allocate the result on stack
and make a pointer out of it. Have to be mindful of the lifetime.
*/
storage: [32]S64
len : S64
@@ -30,8 +48,8 @@ main :: (): int
a: Any = 10
b: Any = 20
c := a + b
// - [ ] DANGEROUS BUG! &(int64_t){32} creates a new value, we shouldn't do this with variables!!!
// Assert(c.type == S64 && c == 30)
// Assert(a+b+a==c+(5+5))
Assert(c.type == S64 && c == 30)
Assert(a+b+a==c+(5+5))
return 0

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@@ -1,4 +1,4 @@
#load "Multimedia.core"
#import "Multimedia.core"
main :: (): int
StartMultimedia(title = "Hello people!")