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fix: fix infering int and float literal in generic fn calls (#9287)

pull/9296/head
Enzo 2021-03-14 14:00:47 +01:00 committed by GitHub
parent c0779e8455
commit db152868c0
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3 changed files with 11 additions and 2 deletions
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2
vlib/v/checker/check_types.v
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@ -443,7 +443,7 @@ pub fn (mut c Checker) infer_fn_types(f table.Fn, mut call_expr ast.CallExpr) {
arg := call_expr.args[arg_i] arg := call_expr.args[arg_i]
param_type_sym := c.table.get_type_symbol(param.typ) param_type_sym := c.table.get_type_symbol(param.typ)
if param.typ.has_flag(.generic) && param_type_sym.name == gt_name { if param.typ.has_flag(.generic) && param_type_sym.name == gt_name {
typ = arg.typ typ = c.table.mktyp(arg.typ)
break break
} }
arg_sym := c.table.get_type_symbol(arg.typ) arg_sym := c.table.get_type_symbol(arg.typ)

9
vlib/v/tests/generic_fn_infer_test.v
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@ -19,6 +19,15 @@ fn test_explicit_calls_should_also_work() {
assert true assert true
} }
fn get_type_name<T>(x T) string {
return T.name
}
fn test_literal() {
assert get_type_name(1) == 'int'
assert get_type_name(1.0) == 'f64'
}
// //
fn choose4<T>(a T, b T, c T, d T) T { fn choose4<T>(a T, b T, c T, d T) T {
// NB: a similar construct is used in prime31's via engine // NB: a similar construct is used in prime31's via engine