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Treat single quote literals as ranged numbers for inference purposes

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Ayaz Hafiz 2022-10-03 15:19:38 -05:00
parent 797763b5fa
commit 178b634266
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10 changed files with 179 additions and 16 deletions
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12
crates/compiler/constrain/src/expr.rs
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@ -1,7 +1,8 @@
use std::ops::Range;
use crate::builtins::{
empty_list_type, float_literal, int_literal, list_type, num_literal, num_u32, str_type,
empty_list_type, float_literal, int_literal, list_type, num_literal, single_quote_literal,
str_type,
};
use crate::pattern::{constrain_pattern, PatternState};
use roc_can::annotation::IntroducedVariables;
@ -292,7 +293,14 @@ pub fn constrain_expr(
constraints.exists(vars, and_constraint)
}
Str(_) => constraints.equal_types(str_type(), expected, Category::Str, region),
SingleQuote(_) => constraints.equal_types(num_u32(), expected, Category::Character, region),
SingleQuote(num_var, precision_var, _, bound) => single_quote_literal(
constraints,
*num_var,
*precision_var,
expected,
region,
*bound,
),
List {
elem_var,
loc_elems,