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ast, checker: fix checking generic struct type mismatch (#16701)

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yuyi 2022-12-18 16:29:44 +08:00 committed by GitHub
parent 9f1239c56e
commit ba07e48691
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2 changed files with 7 additions and 5 deletions
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7
vlib/v/ast/table.v
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@ -1799,7 +1799,12 @@ pub fn (mut t Table) generic_type_names(generic_type Type) []string {
}
Struct, Interface, SumType {
if sym.info.is_generic {
names << sym.info.generic_types.map(t.sym(it).name)
if sym.generic_types.len > 0 {
// Foo[U] (declaration: Foo[T])
names << sym.generic_types.map(t.sym(it).name)
} else {
names << sym.info.generic_types.map(t.sym(it).name)
}
}
}
else {}

5
vlib/v/checker/fn.v
View File

@ -131,10 +131,7 @@ fn (mut c Checker) fn_decl(mut node ast.FnDecl) {
c.error('fixed array cannot be returned by function', node.return_type_pos)
}
// Ensure each generic type of the parameter was declared in the function's definition
// TODO: fix inconsistent return_type type case
if node.return_type.has_flag(.generic) && (return_sym.kind == .any
|| (return_sym.kind == .array
&& c.table.sym((return_sym.info as ast.Array).elem_type).kind == .any)) {
if node.return_type.has_flag(.generic) {
generic_names := c.table.generic_type_names(node.return_type)
for name in generic_names {
if name !in node.generic_names {