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950b70dcc7
Summary: This patch introduces the skeleton of the constexpr interpreter, capable of evaluating a simple constexpr functions consisting of if statements. The interpreter is described in more detail in the RFC. Further patches will add more features. Reviewers: Bigcheese, jfb, rsmith Subscribers: bruno, uenoku, ldionne, Tyker, thegameg, tschuett, dexonsmith, mgorny, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D64146 llvm-svn: 371834
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
//===--- Frame.h - Call frame for the VM and AST Walker ---------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Defines the base class of interpreter and evaluator stack frames.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_AST_INTERP_FRAME_H
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#define LLVM_CLANG_AST_INTERP_FRAME_H
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#include "clang/Basic/SourceLocation.h"
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#include "llvm/Support/raw_ostream.h"
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namespace clang {
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class FunctionDecl;
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namespace interp {
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/// Base class for stack frames, shared between VM and walker.
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class Frame {
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public:
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virtual ~Frame();
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/// Generates a human-readable description of the call site.
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virtual void describe(llvm::raw_ostream &OS) = 0;
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/// Returns a pointer to the caller frame.
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virtual Frame *getCaller() const = 0;
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/// Returns the location of the call site.
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virtual SourceLocation getCallLocation() const = 0;
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/// Returns the called function's declaration.
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virtual const FunctionDecl *getCallee() const = 0;
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};
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} // namespace interp
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} // namespace clang
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#endif
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