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carbon-lang/toolchain/check/testdata/class/self_conversion.carbon
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Richard Smith ce1dd20be2 Refactor member lookup in preparation for adding impl lookup. (#3775) 
A couple of minor functional changes here:

- We now always create a `name_ref` for the name referred to by the
right-hand operand of member access. Previously we skipped creating this
instruction if the referenced name was a field, and just created the
field access instruction. This makes our processing of member accesses
and our SemIR representation a bit more uniform.
- We now perform lookup into the type of the left-hand operand if it's
any type with a scope, not just for classes. This means we do lookup
into interface types. However, doing so isn't really useful yet because
it always finds an associated entity that isn't usable by itself. This
changes the diagnostic in
`toolchain/check/testdata/interface/fail_todo_facet_lookup.carbon`.
2024-03-13 23:44:38 +00:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
base class Base {
var a: i32;
}
class Derived {
extend base: Base;
fn SelfBase[self: Base]() -> i32;
fn AddrSelfBase[addr self: Base*]();
}
fn Derived.SelfBase[self: Base]() -> i32 {
return self.a;
}
fn Derived.AddrSelfBase[addr self: Base*]() {
(*self).a = 1;
}
fn Call(p: Derived*) -> i32 {
(*p).AddrSelfBase();
return (*p).SelfBase();
}
// CHECK:STDOUT: --- self_conversion.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Base: type = class_type @Base [template]
// CHECK:STDOUT: %.1: type = unbound_element_type Base, i32 [template]
// CHECK:STDOUT: %.2: type = struct_type {.a: i32} [template]
// CHECK:STDOUT: %Derived: type = class_type @Derived [template]
// CHECK:STDOUT: %.3: type = ptr_type {.a: i32} [template]
// CHECK:STDOUT: %.4: type = unbound_element_type Derived, Base [template]
// CHECK:STDOUT: %.5: type = ptr_type Base [template]
// CHECK:STDOUT: %.6: type = struct_type {.base: Base} [template]
// CHECK:STDOUT: %.7: i32 = int_literal 1 [template]
// CHECK:STDOUT: %.8: type = ptr_type Derived [template]
// CHECK:STDOUT: %.9: type = struct_type {.base: {.a: i32}*} [template]
// CHECK:STDOUT: %.10: type = ptr_type {.base: Base} [template]
// CHECK:STDOUT: %.11: type = tuple_type () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Base = %Base.decl
// CHECK:STDOUT: .Derived = %Derived.decl
// CHECK:STDOUT: .Call = %Call
// CHECK:STDOUT: }
// CHECK:STDOUT: %Base.decl: type = class_decl @Base [template = constants.%Base] {}
// CHECK:STDOUT: %Derived.decl: type = class_decl @Derived [template = constants.%Derived] {}
// CHECK:STDOUT: %SelfBase: <function> = fn_decl @SelfBase [template] {
// CHECK:STDOUT: %Base.ref.loc18: type = name_ref Base, %Base.decl [template = constants.%Base]
// CHECK:STDOUT: %self.loc18_21.1: Base = param self
// CHECK:STDOUT: @SelfBase.%self: Base = bind_name self, %self.loc18_21.1
// CHECK:STDOUT: %return.var.loc18: ref i32 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %AddrSelfBase: <function> = fn_decl @AddrSelfBase [template] {
// CHECK:STDOUT: %Base.ref.loc22: type = name_ref Base, %Base.decl [template = constants.%Base]
// CHECK:STDOUT: %.loc22_40: type = ptr_type Base [template = constants.%.5]
// CHECK:STDOUT: %self.loc22_30.1: Base* = param self
// CHECK:STDOUT: @AddrSelfBase.%self: Base* = bind_name self, %self.loc22_30.1
// CHECK:STDOUT: @AddrSelfBase.%.loc22: Base* = addr_pattern @AddrSelfBase.%self
// CHECK:STDOUT: }
// CHECK:STDOUT: %Call: <function> = fn_decl @Call [template] {
// CHECK:STDOUT: %Derived.ref: type = name_ref Derived, %Derived.decl [template = constants.%Derived]
// CHECK:STDOUT: %.loc26: type = ptr_type Derived [template = constants.%.8]
// CHECK:STDOUT: %p.loc26_9.1: Derived* = param p
// CHECK:STDOUT: @Call.%p: Derived* = bind_name p, %p.loc26_9.1
// CHECK:STDOUT: %return.var.loc26: ref i32 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Base {
// CHECK:STDOUT: %.loc8: <unbound element of class Base> = field_decl a, element0 [template]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Base
// CHECK:STDOUT: .a = %.loc8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Derived {
// CHECK:STDOUT: %Base.ref.loc12: type = name_ref Base, file.%Base.decl [template = constants.%Base]
// CHECK:STDOUT: %.loc12: <unbound element of class Derived> = base_decl Base, element0 [template]
// CHECK:STDOUT: %SelfBase: <function> = fn_decl @SelfBase [template] {
// CHECK:STDOUT: %Base.ref.loc14: type = name_ref Base, file.%Base.decl [template = constants.%Base]
// CHECK:STDOUT: %self.loc14_15.1: Base = param self
// CHECK:STDOUT: %self.loc14_15.2: Base = bind_name self, %self.loc14_15.1
// CHECK:STDOUT: %return.var: ref i32 = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %AddrSelfBase: <function> = fn_decl @AddrSelfBase [template] {
// CHECK:STDOUT: %Base.ref.loc15: type = name_ref Base, file.%Base.decl [template = constants.%Base]
// CHECK:STDOUT: %.loc15_34: type = ptr_type Base [template = constants.%.5]
// CHECK:STDOUT: %self.loc15_24.1: Base* = param self
// CHECK:STDOUT: %self.loc15_24.3: Base* = bind_name self, %self.loc15_24.1
// CHECK:STDOUT: %.loc15_19: Base* = addr_pattern %self.loc15_24.3
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Derived
// CHECK:STDOUT: .base = %.loc12
// CHECK:STDOUT: .SelfBase = %SelfBase
// CHECK:STDOUT: .AddrSelfBase = %AddrSelfBase
// CHECK:STDOUT: extend name_scope1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @SelfBase[%self: Base]() -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %self.ref: Base = name_ref self, %self
// CHECK:STDOUT: %a.ref: <unbound element of class Base> = name_ref a, @Base.%.loc8 [template = @Base.%.loc8]
// CHECK:STDOUT: %.loc19_14.1: ref i32 = class_element_access %self.ref, element0
// CHECK:STDOUT: %.loc19_14.2: i32 = bind_value %.loc19_14.1
// CHECK:STDOUT: return %.loc19_14.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @AddrSelfBase[addr %self: Base*]() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %self.ref: Base* = name_ref self, %self
// CHECK:STDOUT: %.loc23_4: ref Base = deref %self.ref
// CHECK:STDOUT: %a.ref: <unbound element of class Base> = name_ref a, @Base.%.loc8 [template = @Base.%.loc8]
// CHECK:STDOUT: %.loc23_10: ref i32 = class_element_access %.loc23_4, element0
// CHECK:STDOUT: %.loc23_15: i32 = int_literal 1 [template = constants.%.7]
// CHECK:STDOUT: assign %.loc23_10, %.loc23_15
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Call(%p: Derived*) -> i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %p.ref.loc27: Derived* = name_ref p, %p
// CHECK:STDOUT: %.loc27_4.1: ref Derived = deref %p.ref.loc27
// CHECK:STDOUT: %AddrSelfBase.ref: <function> = name_ref AddrSelfBase, @Derived.%AddrSelfBase [template = @Derived.%AddrSelfBase]
// CHECK:STDOUT: %.loc27_7: <bound method> = bound_method %.loc27_4.1, %AddrSelfBase.ref
// CHECK:STDOUT: %.loc27_4.2: Derived* = addr_of %.loc27_4.1
// CHECK:STDOUT: %.loc27_20.1: ref Derived = deref %.loc27_4.2
// CHECK:STDOUT: %.loc27_20.2: ref Base = class_element_access %.loc27_20.1, element0
// CHECK:STDOUT: %.loc27_20.3: Base* = addr_of %.loc27_20.2
// CHECK:STDOUT: %.loc27_4.3: Base* = converted %.loc27_4.2, %.loc27_20.3
// CHECK:STDOUT: %.loc27_20.4: init () = call %.loc27_7(%.loc27_4.3)
// CHECK:STDOUT: %p.ref.loc28: Derived* = name_ref p, %p
// CHECK:STDOUT: %.loc28_11.1: ref Derived = deref %p.ref.loc28
// CHECK:STDOUT: %SelfBase.ref: <function> = name_ref SelfBase, @Derived.%SelfBase [template = @Derived.%SelfBase]
// CHECK:STDOUT: %.loc28_14: <bound method> = bound_method %.loc28_11.1, %SelfBase.ref
// CHECK:STDOUT: %.loc28_23.1: ref Base = class_element_access %.loc28_11.1, element0
// CHECK:STDOUT: %.loc28_11.2: ref Base = converted %.loc28_11.1, %.loc28_23.1
// CHECK:STDOUT: %.loc28_11.3: Base = bind_value %.loc28_11.2
// CHECK:STDOUT: %.loc28_23.2: init i32 = call %.loc28_14(%.loc28_11.3)
// CHECK:STDOUT: %.loc28_25: i32 = value_of_initializer %.loc28_23.2
// CHECK:STDOUT: %.loc28_23.3: i32 = converted %.loc28_23.2, %.loc28_25
// CHECK:STDOUT: return %.loc28_23.3
// CHECK:STDOUT: }
// CHECK:STDOUT:
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