mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-28 17:54:52 +01:00
Jon Ross-Perkins
5c567b892d
Note, there's still a TODO "Allow non-extern declarations in the same library."
54 lines
2.3 KiB
C++
54 lines
2.3 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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#ifndef CARBON_TOOLCHAIN_CHECK_FUNCTION_H_
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#define CARBON_TOOLCHAIN_CHECK_FUNCTION_H_
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#include "toolchain/check/context.h"
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#include "toolchain/check/decl_name_stack.h"
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#include "toolchain/check/subst.h"
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#include "toolchain/sem_ir/function.h"
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#include "toolchain/sem_ir/ids.h"
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namespace Carbon::Check {
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// State saved for a function definition that has been suspended after
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// processing its declaration and before processing its body. This is used for
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// inline method handling.
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struct SuspendedFunction {
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// The function that was declared.
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SemIR::FunctionId function_id;
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// The instruction ID of the FunctionDecl instruction.
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SemIR::InstId decl_id;
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// The declaration name information of the function. This includes the scope
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// information, such as parameter names.
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DeclNameStack::SuspendedName saved_name_state;
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};
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// Checks that `new_function_id` has the same parameter types and return type as
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// `prev_function_id`, applying the specified set of substitutions to the
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// previous function. Prints a suitable diagnostic and returns false if not.
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// Note that this doesn't include the syntactic check that's performed for
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// redeclarations.
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auto CheckFunctionTypeMatches(Context& context,
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SemIR::FunctionId new_function_id,
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SemIR::FunctionId prev_function_id,
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Substitutions substitutions) -> bool;
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// Tries to merge new_function into prev_function_id. Since new_function won't
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// have a definition even if one is upcoming, set is_definition to indicate the
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// planned result.
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//
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// If merging is successful, updates the FunctionId on new_function and returns
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// true. Otherwise, returns false. Prints a diagnostic when appropriate.
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auto MergeFunctionRedecl(Context& context, SemIR::LocId loc_id,
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SemIR::Function& new_function, bool new_is_import,
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bool new_is_definition,
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SemIR::FunctionId prev_function_id,
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bool prev_is_imported) -> bool;
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} // namespace Carbon::Check
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#endif // CARBON_TOOLCHAIN_CHECK_FUNCTION_H_
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