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adds Num.subChecked

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This commit is contained in:
Celso Bonutti Filho 2020-12-22 23:27:16 -03:00
parent 5d2abc2bd2
commit fe588c120c
8 changed files with 210 additions and 15 deletions
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13
compiler/builtins/src/std.rs
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@ -75,7 +75,7 @@ pub fn types() -> MutMap<Symbol, (SolvedType, Region)> {
),
);
// addChecked : Num a, Num a -> Result (Num a) [ IntOverflow ]*
// addChecked : Num a, Num a -> Result (Num a) [ Overflow ]*
let overflow = SolvedType::TagUnion(
vec![(TagName::Global("Overflow".into()), vec![])],
Box::new(SolvedType::Wildcard),
@ -85,7 +85,7 @@ pub fn types() -> MutMap<Symbol, (SolvedType, Region)> {
Symbol::NUM_ADD_CHECKED,
top_level_function(
vec![num_type(flex(TVAR1)), num_type(flex(TVAR1))],
Box::new(result_type(num_type(flex(TVAR1)), overflow)),
Box::new(result_type(num_type(flex(TVAR1)), overflow.clone())),
),
);
@ -110,6 +110,15 @@ pub fn types() -> MutMap<Symbol, (SolvedType, Region)> {
top_level_function(vec![int_type(), int_type()], Box::new(int_type())),
);
// subChecked : Num a, Num a -> Result (Num a) [ Overflow ]*
add_type(
Symbol::NUM_SUB_CHECKED,
top_level_function(
vec![num_type(flex(TVAR1)), num_type(flex(TVAR1))],
Box::new(result_type(num_type(flex(TVAR1)), overflow)),
),
);
// mul or (*) : Num a, Num a -> Num a
add_type(
Symbol::NUM_MUL,