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[Tolk] bool type (-1/0 int under the hood)

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Comparison operators `== / >= /...` return `bool`.
Logical operators `&& ||` return bool.
Constants `true` and `false` have the `bool` type.
Lots of stdlib functions return `bool`, not `int`.

Operator `!x` supports both `int` and `bool`.
Condition of `if` accepts both `int` and `bool`.
Arithmetic operators are restricted to integers.
Logical `&&` and `||` accept both `bool` and `int`.

No arithmetic operations with bools allowed (only bitwise and logical).
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tolk-vm 2025-01-13 15:21:24 +07:00
parent 799e2d1265
commit 974d76c5f6
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33 changed files with 764 additions and 212 deletions
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tolk-tester/tests/allow_post_modification.tolk
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@ -83,7 +83,7 @@ fun test_if_else(x: int): (int, int, int, int, int) {
return (x.`~inc`(8), x + 1, x = 1, x <<= 3, x);
} else {
xx = 9;
return (x, x.`~inc`(-4), x.`~inc`(-1), x >= 1, x = x + xx);
return (x, x.`~inc`(-4), x.`~inc`(-1), (x >= 1) as int, x = x + xx);
}
}