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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
cf389bf5d3
Creates a `GlobalInit` class for storing relevant values, pulling functions off `InstBlockStack` and `Context`. Adds a `Context` pointer just so that it doesn't need to be passed in on each call (`Finalize` in particular uses several members). Note we have several different `InstBlockStack` instances, so several copies of the relevant members were simply unused.
48 lines
1.5 KiB
C++
48 lines
1.5 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_GLOBAL_INIT_H_
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#define CARBON_TOOLCHAIN_CHECK_GLOBAL_INIT_H_
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#include "llvm/ADT/SmallVector.h"
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#include "toolchain/sem_ir/ids.h"
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namespace Carbon::Check {
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class Context;
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// Tracks state for global initialization. Handles should `Resume` when entering
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// an expression that's used for global init, and `Suspend` when the expression
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// is finished. Instructions in the middle will be tracked for the
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// `__global_init` function.
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class GlobalInit {
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public:
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explicit GlobalInit(Context* context) : context_(context) {}
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// Resumes adding instructions to global init.
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auto Resume() -> void;
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// Suspends adding instructions to global init.
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auto Suspend() -> void;
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// Finalizes the global initialization state, creating `__global_init` if
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// needed. Only called once at the end of checking.
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auto Finalize() -> void;
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private:
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// The associated context. Stored for convenience.
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Context* context_;
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// The currently suspended global init block. The value may change as a result
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// of control flow in initialization.
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SemIR::InstBlockId block_id_ = SemIR::InstBlockId::GlobalInit;
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// The contents for the currently suspended global init block.
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llvm::SmallVector<SemIR::InstId> block_;
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};
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} // namespace Carbon::Check
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#endif // CARBON_TOOLCHAIN_CHECK_GLOBAL_INIT_H_
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