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Jon Ross-Perkins
0001f53ec1
Note we only identify conflicts between libraries in the current package during import. This restructures the BUILD because of dependency cycles between cpp files... We're going to need context's name lookup to handle things such as merging, merging requires function logic, function logic requires context access. Per discussion, going with a single large cc_library for now rather than trying to split out small libraries. I'm envisioning the new merge.* as a hub for cross-declaration merge logic. Note function.cpp is already pretty sizable, and I think it may lean a little function-specific even if there are some utilities that could be split out.
39 lines
1.7 KiB
C++
39 lines
1.7 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/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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// 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::LocationId loc_id,
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SemIR::Function& new_function, 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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