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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-PerkinsandRichard Smith
76ed3c73cb
This removes the builtin FunctionType, replacing it with a FunctionType instruction. The constant for a FunctionDecl is now a StructValue with type of FunctionType. Note this means a function declaration produces _both_ a type, and a value of the type. This has some consequences in terms of circularity, and makes the importing of function declarations a little more complex. It'll get particularly peculiar for imports because of the behavior of the reference, but that's a known issue due to other things such as `alias`. The impact will hopefully be contained to ResolvePrevInstForMerge (and ImportRefs). To note a small formatting change in diagnostics: ``` - // CHECK:STDERR: fail_member_lookup.carbon:[[@LINE+4]]:3: ERROR: Value of type `<associated <function> in Interface>` is not callable. + // CHECK:STDERR: fail_member_lookup.carbon:[[@LINE+4]]:3: ERROR: Value of type `<associated F in Interface>` is not callable. - // CHECK:STDERR: fail_todo_facet_lookup.carbon:[[@LINE+4]]:3: ERROR: Value of type `<associated <function> in Interface>` is not callable. + // CHECK:STDERR: fail_todo_facet_lookup.carbon:[[@LINE+4]]:3: ERROR: Value of type `<associated F in Interface>` is not callable. ``` --------- Co-authored-by: Richard Smith <richard@metafoo.co.uk>
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/sem_ir/function.h"
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#include "toolchain/sem_ir/file.h"
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namespace Carbon::SemIR {
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auto GetCalleeFunction(const File& sem_ir, InstId callee_id) -> CalleeFunction {
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CalleeFunction result = {.function_id = FunctionId::Invalid,
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.self_id = InstId::Invalid,
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.is_error = false};
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if (auto bound_method = sem_ir.insts().TryGetAs<BoundMethod>(callee_id)) {
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result.self_id = bound_method->object_id;
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callee_id = bound_method->function_id;
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}
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// Identify the function we're calling.
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auto val_id = sem_ir.constant_values().Get(callee_id);
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if (!val_id.is_constant()) {
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return result;
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}
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auto val_inst = sem_ir.insts().Get(val_id.inst_id());
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auto struct_val = val_inst.TryAs<StructValue>();
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if (!struct_val) {
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result.is_error = val_inst.type_id() == SemIR::TypeId::Error;
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return result;
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}
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auto fn_type = sem_ir.types().TryGetAs<FunctionType>(struct_val->type_id);
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if (!fn_type) {
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return result;
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}
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result.function_id = fn_type->function_id;
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return result;
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}
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} // namespace Carbon::SemIR
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