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checker: clean up sum_type_decl() (#17669)
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@ -548,7 +548,7 @@ fn (mut c Checker) sum_type_decl(node ast.SumTypeDecl) {
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c.error('sum type cannot hold a reference type', variant.pos)
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}
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c.ensure_type_exists(variant.typ, variant.pos) or {}
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mut sym := c.table.sym(variant.typ)
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sym := c.table.sym(variant.typ)
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if sym.name in names_used {
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c.error('sum type ${node.name} cannot hold the type `${sym.name}` more than once',
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variant.pos)
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@ -558,7 +558,7 @@ fn (mut c Checker) sum_type_decl(node ast.SumTypeDecl) {
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c.error('sum type cannot hold an interface', variant.pos)
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} else if sym.kind == .struct_ && sym.language == .js {
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c.error('sum type cannot hold a JS struct', variant.pos)
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} else if mut sym.info is ast.Struct {
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} else if sym.info is ast.Struct {
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if sym.info.is_generic {
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if !variant.typ.has_flag(.generic) {
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c.error('generic struct `${sym.name}` must specify generic type names, e.g. ${sym.name}[T]',
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@ -581,11 +581,10 @@ fn (mut c Checker) sum_type_decl(node ast.SumTypeDecl) {
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}
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}
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} else if sym.info is ast.FnType {
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func := (sym.info as ast.FnType).func
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if c.table.sym(func.return_type).name.ends_with('.${node.name}') {
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if c.table.sym(sym.info.func.return_type).name.ends_with('.${node.name}') {
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c.error('sum type `${node.name}` cannot be defined recursively', variant.pos)
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}
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for param in func.params {
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for param in sym.info.func.params {
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if c.table.sym(param.typ).name.ends_with('.${node.name}') {
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c.error('sum type `${node.name}` cannot be defined recursively', variant.pos)
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}
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