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usr / src / contrib / llvm-project / clang / lib / AST / Interp /

📁 ..
📄 Boolean.h(4.12 KB)
📄 ByteCodeEmitter.cpp(5.38 KB)
📄 ByteCodeEmitter.h(3.13 KB)
📄 ByteCodeExprGen.cpp(16.6 KB)
📄 ByteCodeExprGen.h(10.2 KB)
📄 ByteCodeGenError.cpp(483 B)
📄 ByteCodeGenError.h(1.36 KB)
📄 ByteCodeStmtGen.cpp(7.21 KB)
📄 ByteCodeStmtGen.h(2.39 KB)
📄 Context.cpp(3.28 KB)
📄 Context.h(2.39 KB)
📄 Descriptor.cpp(10.31 KB)
📄 Descriptor.h(7.82 KB)
📄 Disasm.cpp(1.95 KB)
📄 EvalEmitter.cpp(7.6 KB)
📄 EvalEmitter.h(3.7 KB)
📄 Frame.cpp(464 B)
📄 Frame.h(1.28 KB)
📄 Function.cpp(1.73 KB)
📄 Function.h(4.91 KB)
📄 Integral.h(8.38 KB)
📄 Interp.cpp(11.54 KB)
📄 Interp.h(30.64 KB)
📄 InterpBlock.cpp(1.91 KB)
📄 InterpBlock.h(4.11 KB)
📄 InterpFrame.cpp(5.32 KB)
📄 InterpFrame.h(4.54 KB)
📄 InterpStack.cpp(1.81 KB)
📄 InterpStack.h(3.43 KB)
📄 InterpState.cpp(2.03 KB)
📄 InterpState.h(3.29 KB)
📄 Opcode.h(817 B)
📄 Opcodes.td(11.02 KB)
📄 Pointer.cpp(4.97 KB)
📄 Pointer.h(11.08 KB)
📄 PrimType.cpp(648 B)
📄 PrimType.h(4.66 KB)
📄 Program.cpp(11.29 KB)
📄 Program.h(6.66 KB)
📄 Record.cpp(1.54 KB)
📄 Record.h(3.76 KB)
📄 Source.cpp(1.15 KB)
📄 Source.h(3.25 KB)
📄 State.cpp(5.34 KB)
📄 State.h(4.01 KB)

Editing: Source.h

//===--- Source.h - Source location provider for the VM  --------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Defines a program which organises and links multiple bytecode functions.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_AST_INTERP_SOURCE_H
#define LLVM_CLANG_AST_INTERP_SOURCE_H

#include "clang/AST/Decl.h"
#include "clang/AST/Stmt.h"
#include "llvm/Support/Endian.h"

namespace clang {
namespace interp {
class Function;

/// Pointer into the code segment.
class CodePtr {
public:
  CodePtr() : Ptr(nullptr) {}

CodePtr &operator+=(int32_t Offset) {
    Ptr += Offset;
    return *this;
  }

int32_t operator-(const CodePtr &RHS) const {
    assert(Ptr != nullptr && RHS.Ptr != nullptr && "Invalid code pointer");
    return Ptr - RHS.Ptr;
  }

CodePtr operator-(size_t RHS) const {
    assert(Ptr != nullptr && "Invalid code pointer");
    return CodePtr(Ptr - RHS);
  }

bool operator!=(const CodePtr &RHS) const { return Ptr != RHS.Ptr; }

/// Reads data and advances the pointer.
  template <typename T> T read() {
    T Value = ReadHelper<T>(Ptr);
    Ptr += sizeof(T);
    return Value;
  }

private:
  /// Constructor used by Function to generate pointers.
  CodePtr(const char *Ptr) : Ptr(Ptr) {}

/// Helper to decode a value or a pointer.
  template <typename T>
  static std::enable_if_t<!std::is_pointer<T>::value, T>
  ReadHelper(const char *Ptr) {
    using namespace llvm::support;
    return endian::read<T, endianness::native, 1>(Ptr);
  }

template <typename T>
  static std::enable_if_t<std::is_pointer<T>::value, T>
  ReadHelper(const char *Ptr) {
    using namespace llvm::support;
    auto Punned = endian::read<uintptr_t, endianness::native, 1>(Ptr);
    return reinterpret_cast<T>(Punned);
  }

private:
  friend class Function;

/// Pointer into the code owned by a function.
  const char *Ptr;
};

/// Describes the statement/declaration an opcode was generated from.
class SourceInfo {
public:
  SourceInfo() {}
  SourceInfo(const Stmt *E) : Source(E) {}
  SourceInfo(const Decl *D) : Source(D) {}

SourceLocation getLoc() const;

const Stmt *asStmt() const { return Source.dyn_cast<const Stmt *>(); }
  const Decl *asDecl() const { return Source.dyn_cast<const Decl *>(); }
  const Expr *asExpr() const;

operator bool() const { return !Source.isNull(); }

private:
  llvm::PointerUnion<const Decl *, const Stmt *> Source;
};

using SourceMap = std::vector<std::pair<unsigned, SourceInfo>>;

/// Interface for classes which map locations to sources.
class SourceMapper {
public:
  virtual ~SourceMapper() {}

/// Returns source information for a given PC in a function.
  virtual SourceInfo getSource(Function *F, CodePtr PC) const = 0;

/// Returns the expression if an opcode belongs to one, null otherwise.
  const Expr *getExpr(Function *F, CodePtr PC) const;
  /// Returns the location from which an opcode originates.
  SourceLocation getLocation(Function *F, CodePtr PC) const;
};

} // namespace interp
} // namespace clang

#endif

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Editing: Source.h

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