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List.join builtin and unification

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Chad Stearns 2020-08-01 22:28:09 -04:00
parent 6dd6afbeac
commit a9ab550c10
6 changed files with 49 additions and 0 deletions
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21
compiler/can/src/builtins.rs
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@ -61,6 +61,7 @@ pub fn builtin_defs(var_store: &mut VarStore) -> MutMap<Symbol, Def> {
Symbol::LIST_REVERSE => list_reverse,
Symbol::LIST_CONCAT => list_concat,
Symbol::LIST_PREPEND => list_prepend,
Symbol::LIST_JOIN => list_join,
Symbol::NUM_ADD => num_add,
Symbol::NUM_SUB => num_sub,
Symbol::NUM_MUL => num_mul,
@ -903,6 +904,26 @@ fn list_prepend(symbol: Symbol, var_store: &mut VarStore) -> Def {
)
}
/// List.join : List (List elem) -> List elem
fn list_join(symbol: Symbol, var_store: &mut VarStore) -> Def {
let list_var = var_store.fresh();
let list_of_list_var = var_store.fresh();
let body = RunLowLevel {
op: LowLevel::ListJoin,
args: vec![(list_of_list_var, Var(Symbol::ARG_1))],
ret_var: list_var,
};
defn(
symbol,
vec![(list_of_list_var, Symbol::ARG_1)],
var_store,
body,
list_var,
)
}
/// Num.rem : Int, Int -> Result Int [ DivByZero ]*
fn num_rem(symbol: Symbol, var_store: &mut VarStore) -> Def {
let num_var = var_store.fresh();