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carbon-lang/toolchain/check/testdata/class/fail_generic_method.carbon
T
Geoff RomerandJon Ross-Perkins dc32aa2690 Initial support for binding patterns in SemIR (#4221) 
Introduces the `BindingPattern` and `SymbolicBindingPattern` insts, and
a separate stack of pattern blocks that they are emitted into. The
intent is to generate the corresponding pattern-matching insts (like
`BindName`) from them in a separate pass, but that is deferred to future
PRs.

See
[here](https://docs.google.com/document/d/1U_vQH17V893J9aF1LJXUnFYBNSs2MjKl4bJPaWCB2zo/edit?usp=sharing&resourcekey=0-w0xGYZ0An31Kpz-wvzSXwQ)
for the design this is based on, but note that during review we have
chosen to deviate from that design by putting the patterns in separate
blocks, and omitting the "forward references" from a `BindingPattern` to
its corresponding `BindName`. This in turn necessitates having separate
inst kinds for symbolic and non-symbolic binding patterns.

---------

Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
2024-09-25 19:12:58 +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
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/class/fail_generic_method.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/fail_generic_method.carbon
class Class(T:! type) {
var a: T;
fn F[self: Self](n: T);
}
// TODO: The follow-on errors here aren't great. Investigate whether we can
// enter the scope anyway if the parameters don't match.
// CHECK:STDERR: fail_generic_method.carbon:[[@LINE+14]]:10: error: redeclaration differs at parameter 1
// CHECK:STDERR: fn Class(N:! i32).F[self: Self](n: T) {}
// CHECK:STDERR: ^
// CHECK:STDERR: fail_generic_method.carbon:[[@LINE-10]]:13: note: previous declaration's corresponding parameter here
// CHECK:STDERR: class Class(T:! type) {
// CHECK:STDERR: ^
// CHECK:STDERR:
// CHECK:STDERR: fail_generic_method.carbon:[[@LINE+7]]:27: error: name `Self` not found
// CHECK:STDERR: fn Class(N:! i32).F[self: Self](n: T) {}
// CHECK:STDERR: ^~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_generic_method.carbon:[[@LINE+3]]:36: error: name `T` not found
// CHECK:STDERR: fn Class(N:! i32).F[self: Self](n: T) {}
// CHECK:STDERR: ^
fn Class(N:! i32).F[self: Self](n: T) {}
// CHECK:STDOUT: --- fail_generic_method.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %T: type = bind_symbolic_name T 0 [symbolic]
// CHECK:STDOUT: %Class.type: type = generic_class_type @Class [template]
// CHECK:STDOUT: %.1: type = tuple_type () [template]
// CHECK:STDOUT: %Class.1: %Class.type = struct_value () [template]
// CHECK:STDOUT: %Class.2: type = class_type @Class, @Class(%T) [symbolic]
// CHECK:STDOUT: %.2: type = unbound_element_type %Class.2, %T [symbolic]
// CHECK:STDOUT: %F.type: type = fn_type @F, @Class(%T) [symbolic]
// CHECK:STDOUT: %F: %F.type = struct_value () [symbolic]
// CHECK:STDOUT: %.3: type = struct_type {.a: %T} [symbolic]
// CHECK:STDOUT: %.4: <witness> = complete_type_witness %.3 [symbolic]
// CHECK:STDOUT: %Int32.type: type = fn_type @Int32 [template]
// CHECK:STDOUT: %Int32: %Int32.type = struct_value () [template]
// CHECK:STDOUT: %N: i32 = bind_symbolic_name N 0 [symbolic]
// CHECK:STDOUT: %.type: type = fn_type @.1 [template]
// CHECK:STDOUT: %.5: %.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: .Int32 = %import_ref
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/operators
// CHECK:STDOUT: import Core//prelude/types
// CHECK:STDOUT: import Core//prelude/operators/arithmetic
// CHECK:STDOUT: import Core//prelude/operators/as
// CHECK:STDOUT: import Core//prelude/operators/bitwise
// CHECK:STDOUT: import Core//prelude/operators/comparison
// CHECK:STDOUT: import Core//prelude/types/bool
// CHECK:STDOUT: }
// CHECK:STDOUT: %import_ref: %Int32.type = import_ref Core//prelude/types, inst+4, loaded [template = constants.%Int32]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Class = %Class.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Class.decl: %Class.type = class_decl @Class [template = constants.%Class.1] {
// CHECK:STDOUT: %T.patt: type = symbolic_binding_pattern T 0
// CHECK:STDOUT: } {
// CHECK:STDOUT: %T.param: type = param T, runtime_param<invalid>
// CHECK:STDOUT: %T.loc11: type = bind_symbolic_name T 0, %T.param [symbolic = %T.1 (constants.%T)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.decl: %.type = fn_decl @.1 [template = constants.%.5] {
// CHECK:STDOUT: %self.patt: <error> = binding_pattern self
// CHECK:STDOUT: %n.patt: <error> = binding_pattern n
// CHECK:STDOUT: } {
// CHECK:STDOUT: %int.make_type_32: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc32_14.1: type = value_of_initializer %int.make_type_32 [template = i32]
// CHECK:STDOUT: %.loc32_14.2: type = converted %int.make_type_32, %.loc32_14.1 [template = i32]
// CHECK:STDOUT: %N.param: i32 = param N, runtime_param<invalid>
// CHECK:STDOUT: %N.loc32: i32 = bind_symbolic_name N 0, %N.param [symbolic = %N.1 (constants.%N)]
// CHECK:STDOUT: %Self.ref: <error> = name_ref Self, <error> [template = <error>]
// CHECK:STDOUT: %self.param: <error> = param self, runtime_param0
// CHECK:STDOUT: %self: <error> = bind_name self, %self.param
// CHECK:STDOUT: %T.ref: <error> = name_ref T, <error> [template = <error>]
// CHECK:STDOUT: %n.param: <error> = param n, runtime_param1
// CHECK:STDOUT: %n: <error> = bind_name n, %n.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic class @Class(%T.loc11: type) {
// CHECK:STDOUT: %T.1: type = bind_symbolic_name T 0 [symbolic = %T.1 (constants.%T)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %Class: type = class_type @Class, @Class(%T.1) [symbolic = %Class (constants.%Class.2)]
// CHECK:STDOUT: %.1: type = unbound_element_type @Class.%Class (%Class.2), @Class.%T.1 (%T) [symbolic = %.1 (constants.%.2)]
// CHECK:STDOUT: %F.type: type = fn_type @F, @Class(%T.1) [symbolic = %F.type (constants.%F.type)]
// CHECK:STDOUT: %F: @Class.%F.type (%F.type) = struct_value () [symbolic = %F (constants.%F)]
// CHECK:STDOUT: %.2: type = struct_type {.a: @Class.%T.1 (%T)} [symbolic = %.2 (constants.%.3)]
// CHECK:STDOUT: %.3: <witness> = complete_type_witness @Class.%.2 (%.3) [symbolic = %.3 (constants.%.4)]
// CHECK:STDOUT:
// CHECK:STDOUT: class {
// CHECK:STDOUT: %T.ref: type = name_ref T, %T.loc11 [symbolic = %T.1 (constants.%T)]
// CHECK:STDOUT: %.loc12: @Class.%.1 (%.2) = field_decl a, element0 [template]
// CHECK:STDOUT: %F.decl: @Class.%F.type (%F.type) = fn_decl @F [symbolic = @Class.%F (constants.%F)] {
// CHECK:STDOUT: %self.patt: @F.%Class (%Class.2) = binding_pattern self
// CHECK:STDOUT: %n.patt: @F.%T (%T) = binding_pattern n
// CHECK:STDOUT: } {
// CHECK:STDOUT: %.loc13: type = specific_constant constants.%Class.2, @Class(constants.%T) [symbolic = %Class (constants.%Class.2)]
// CHECK:STDOUT: %Self.ref: type = name_ref Self, %.loc13 [symbolic = %Class (constants.%Class.2)]
// CHECK:STDOUT: %self.param: @F.%Class (%Class.2) = param self, runtime_param0
// CHECK:STDOUT: %self: @F.%Class (%Class.2) = bind_name self, %self.param
// CHECK:STDOUT: %T.ref: type = name_ref T, @Class.%T.loc11 [symbolic = %T (constants.%T)]
// CHECK:STDOUT: %n.param: @F.%T (%T) = param n, runtime_param1
// CHECK:STDOUT: %n: @F.%T (%T) = bind_name n, %n.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc14: <witness> = complete_type_witness %.3 [symbolic = %.3 (constants.%.4)]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Class.2
// CHECK:STDOUT: .a = %.loc12
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @F(@Class.%T.loc11: type) {
// CHECK:STDOUT: %T: type = bind_symbolic_name T 0 [symbolic = %T (constants.%T)]
// CHECK:STDOUT: %Class: type = class_type @Class, @Class(%T) [symbolic = %Class (constants.%Class.2)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn[%self: @F.%Class (%Class.2)](%n: @F.%T (%T));
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Int32() -> type = "int.make_type_32";
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @.1(%N.loc32: i32) {
// CHECK:STDOUT: %N.1: i32 = bind_symbolic_name N 0 [symbolic = %N.1 (constants.%N)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT: fn[%self: <error>](%n: <error>) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Class(constants.%T) {
// CHECK:STDOUT: %T.1 => constants.%T
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Class(@F.%T) {
// CHECK:STDOUT: %T.1 => constants.%T
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @F(constants.%T) {
// CHECK:STDOUT: %T => constants.%T
// CHECK:STDOUT: %Class => constants.%Class.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Class(@Class.%T.1) {
// CHECK:STDOUT: %T.1 => constants.%T
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @.1(constants.%N) {
// CHECK:STDOUT: %N.1 => constants.%N
// CHECK:STDOUT: }
// CHECK:STDOUT:
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