83 lines · cpp
1//===-- Expression.cpp ----------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "lldb/Expression/Expression.h"10#include "lldb/Target/ExecutionContextScope.h"11#include "lldb/Target/Target.h"12 13#include "llvm/ADT/SmallVector.h"14#include "llvm/ADT/StringExtras.h"15#include "llvm/ADT/StringRef.h"16#include "llvm/Support/Error.h"17 18using namespace lldb_private;19 20Expression::Expression(Target &target)21 : m_target_wp(target.shared_from_this()),22 m_jit_start_addr(LLDB_INVALID_ADDRESS),23 m_jit_end_addr(LLDB_INVALID_ADDRESS) {24 // Can't make any kind of expression without a target.25 assert(m_target_wp.lock());26}27 28Expression::Expression(ExecutionContextScope &exe_scope)29 : m_target_wp(exe_scope.CalculateTarget()),30 m_jit_start_addr(LLDB_INVALID_ADDRESS),31 m_jit_end_addr(LLDB_INVALID_ADDRESS) {32 assert(m_target_wp.lock());33}34 35llvm::Expected<FunctionCallLabel>36lldb_private::FunctionCallLabel::fromString(llvm::StringRef label) {37 llvm::SmallVector<llvm::StringRef, 5> components;38 label.split(components, ":", /*MaxSplit=*/4);39 40 if (components.size() != 5)41 return llvm::createStringError("malformed function call label.");42 43 if (components[0] != FunctionCallLabelPrefix)44 return llvm::createStringError(llvm::formatv(45 "expected function call label prefix '{0}' but found '{1}' instead.",46 FunctionCallLabelPrefix, components[0]));47 48 llvm::StringRef discriminator = components[1];49 llvm::StringRef module_label = components[2];50 llvm::StringRef die_label = components[3];51 llvm::StringRef lookup_name = components[4];52 53 lldb::user_id_t module_id = 0;54 if (!llvm::to_integer(module_label, module_id))55 return llvm::createStringError(56 llvm::formatv("failed to parse module ID from '{0}'.", module_label));57 58 lldb::user_id_t die_id;59 if (!llvm::to_integer(die_label, die_id))60 return llvm::createStringError(61 llvm::formatv("failed to parse symbol ID from '{0}'.", die_label));62 63 return FunctionCallLabel{/*.discriminator=*/discriminator,64 /*.module_id=*/module_id,65 /*.symbol_id=*/die_id,66 /*.lookup_name=*/lookup_name};67}68 69std::string lldb_private::FunctionCallLabel::toString() const {70 return llvm::formatv("{0}:{1}:{2:x}:{3:x}:{4}", FunctionCallLabelPrefix,71 discriminator, module_id, symbol_id, lookup_name)72 .str();73}74 75void llvm::format_provider<FunctionCallLabel>::format(76 const FunctionCallLabel &label, raw_ostream &OS, StringRef Style) {77 OS << llvm::formatv("FunctionCallLabel{ discriminator: {0}, module_id: "78 "{1:x}, symbol_id: {2:x}, "79 "lookup_name: {3} }",80 label.discriminator, label.module_id, label.symbol_id,81 label.lookup_name);82}83