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checker: clean up in cast_expr() (#18859)

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yuyi 2023-07-14 18:38:41 +08:00 committed by GitHub
parent 207203f599
commit 8ecad5abf8
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 11 deletions
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20
vlib/v/checker/checker.v
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@ -2867,7 +2867,7 @@ fn (mut c Checker) cast_expr(mut node ast.CastExpr) ast.Type {
if to_sym.language != .c {
c.ensure_type_exists(to_type, node.pos) or {}
if to_sym.kind == .alias && (to_sym.info as ast.Alias).parent_type.has_flag(.option)
if to_sym.info is ast.Alias && to_sym.info.parent_type.has_flag(.option)
&& !to_type.has_flag(.option) {
c.error('alias to Option type requires to be used as Option type (?${to_sym.name}(...))',
node.pos)
@ -2902,17 +2902,15 @@ fn (mut c Checker) cast_expr(mut node ast.CastExpr) ast.Type {
c.error('cannot cast `${ft}` to `${tt}` (alias to `${final_to_sym.name}`)',
node.pos)
}
} else if to_sym.kind == .struct_ && !to_type.is_ptr()
&& !(to_sym.info as ast.Struct).is_typedef {
} else if to_sym.kind == .struct_ && mut to_sym.info is ast.Struct && !to_sym.info.is_typedef
&& !to_type.is_ptr() {
// For now we ignore C typedef because of `C.Window(C.None)` in vlib/clipboard
if from_sym.kind == .struct_ && !from_type.is_ptr() {
if from_sym.kind == .struct_ && from_sym.info is ast.Struct && !from_type.is_ptr() {
if !to_type.has_flag(.option) {
c.warn('casting to struct is deprecated, use e.g. `Struct{...expr}` instead',
node.pos)
}
from_type_info := from_sym.info as ast.Struct
to_type_info := to_sym.info as ast.Struct
if !c.check_struct_signature(from_type_info, to_type_info) {
if !c.check_struct_signature(from_sym.info, to_sym.info) {
c.error('cannot convert struct `${from_sym.name}` to struct `${to_sym.name}`',
node.pos)
}
@ -2921,8 +2919,8 @@ fn (mut c Checker) cast_expr(mut node ast.CastExpr) ast.Type {
c.error('cannot cast `${ft}` to struct', node.pos)
}
} else if to_sym.kind == .struct_ && to_type.is_ptr() {
if from_sym.kind == .alias {
from_type = (from_sym.info as ast.Alias).parent_type.derive_add_muls(from_type)
if from_sym.info is ast.Alias {
from_type = from_sym.info.parent_type.derive_add_muls(from_type)
}
if mut node.expr is ast.IntegerLiteral {
if node.expr.val.int() == 0 && !c.pref.translated && !c.file.is_translated {
@ -2958,13 +2956,13 @@ fn (mut c Checker) cast_expr(mut node ast.CastExpr) ast.Type {
tt := c.table.type_to_str(to_type)
c.error('cannot cast `${ft}` to `${tt}`', node.pos)
}
} else if to_sym.kind == .interface_ {
} else if mut to_sym.info is ast.Interface {
if c.type_implements(from_type, to_type, node.pos) {
if !from_type.is_any_kind_of_pointer() && from_sym.kind != .interface_
&& !c.inside_unsafe {
c.mark_as_referenced(mut &node.expr, true)
}
if (to_sym.info as ast.Interface).is_generic {
if to_sym.info.is_generic {
inferred_type := c.resolve_generic_interface(from_type, to_type, node.pos)
if inferred_type != 0 {
to_type = inferred_type