1 //===---------------------StructuredData.cpp ---------------------*- C++-*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "lldb/Utility/StructuredData.h"
11 #include "lldb/Utility/DataBuffer.h"
12 #include "lldb/Utility/FileSpec.h"
13 #include "lldb/Utility/JSON.h"
14 #include "lldb/Utility/Status.h"
15 #include "lldb/Utility/Stream.h" // for Stream
16 #include "lldb/Utility/StreamString.h"
17 #include "llvm/ADT/STLExtras.h" // for make_unique
18 #include "llvm/Support/MemoryBuffer.h"
22 #include <limits> // for numeric_limits
24 using namespace lldb_private;
26 //----------------------------------------------------------------------
27 // Functions that use a JSONParser to parse JSON into StructuredData
28 //----------------------------------------------------------------------
29 static StructuredData::ObjectSP ParseJSONValue(JSONParser &json_parser);
30 static StructuredData::ObjectSP ParseJSONObject(JSONParser &json_parser);
31 static StructuredData::ObjectSP ParseJSONArray(JSONParser &json_parser);
33 StructuredData::ObjectSP
34 StructuredData::ParseJSONFromFile(const FileSpec &input_spec, Status &error) {
35 StructuredData::ObjectSP return_sp;
36 if (!input_spec.Exists()) {
37 error.SetErrorStringWithFormatv("input file {0} does not exist.",
42 auto buffer_or_error = llvm::MemoryBuffer::getFile(input_spec.GetPath());
43 if (!buffer_or_error) {
44 error.SetErrorStringWithFormatv("could not open input file: {0} - {1}.",
46 buffer_or_error.getError().message());
50 JSONParser json_parser(buffer_or_error.get()->getBuffer());
51 return_sp = ParseJSONValue(json_parser);
55 static StructuredData::ObjectSP ParseJSONObject(JSONParser &json_parser) {
56 // The "JSONParser::Token::ObjectStart" token should have already been
57 // consumed by the time this function is called
58 auto dict_up = llvm::make_unique<StructuredData::Dictionary>();
63 JSONParser::Token token = json_parser.GetToken(value);
65 if (token == JSONParser::Token::String) {
67 token = json_parser.GetToken(value);
68 if (token == JSONParser::Token::Colon) {
69 StructuredData::ObjectSP value_sp = ParseJSONValue(json_parser);
71 dict_up->AddItem(key, value_sp);
75 } else if (token == JSONParser::Token::ObjectEnd) {
76 return StructuredData::ObjectSP(dict_up.release());
77 } else if (token == JSONParser::Token::Comma) {
83 return StructuredData::ObjectSP();
86 static StructuredData::ObjectSP ParseJSONArray(JSONParser &json_parser) {
87 // The "JSONParser::Token::ObjectStart" token should have already been
89 // by the time this function is called
90 auto array_up = llvm::make_unique<StructuredData::Array>();
95 StructuredData::ObjectSP value_sp = ParseJSONValue(json_parser);
97 array_up->AddItem(value_sp);
101 JSONParser::Token token = json_parser.GetToken(value);
102 if (token == JSONParser::Token::Comma) {
104 } else if (token == JSONParser::Token::ArrayEnd) {
105 return StructuredData::ObjectSP(array_up.release());
110 return StructuredData::ObjectSP();
113 static StructuredData::ObjectSP ParseJSONValue(JSONParser &json_parser) {
115 const JSONParser::Token token = json_parser.GetToken(value);
117 case JSONParser::Token::ObjectStart:
118 return ParseJSONObject(json_parser);
120 case JSONParser::Token::ArrayStart:
121 return ParseJSONArray(json_parser);
123 case JSONParser::Token::Integer: {
125 if (llvm::to_integer(value, uval, 0))
126 return std::make_shared<StructuredData::Integer>(uval);
129 case JSONParser::Token::Float: {
131 if (llvm::to_float(value, val))
132 return std::make_shared<StructuredData::Float>(val);
135 case JSONParser::Token::String:
136 return std::make_shared<StructuredData::String>(value);
138 case JSONParser::Token::True:
139 case JSONParser::Token::False:
140 return std::make_shared<StructuredData::Boolean>(token ==
141 JSONParser::Token::True);
143 case JSONParser::Token::Null:
144 return std::make_shared<StructuredData::Null>();
149 return StructuredData::ObjectSP();
152 StructuredData::ObjectSP StructuredData::ParseJSON(std::string json_text) {
153 JSONParser json_parser(json_text.c_str());
154 StructuredData::ObjectSP object_sp = ParseJSONValue(json_parser);
158 StructuredData::ObjectSP
159 StructuredData::Object::GetObjectForDotSeparatedPath(llvm::StringRef path) {
160 if (this->GetType() == lldb::eStructuredDataTypeDictionary) {
161 std::pair<llvm::StringRef, llvm::StringRef> match = path.split('.');
162 std::string key = match.first.str();
163 ObjectSP value = this->GetAsDictionary()->GetValueForKey(key);
165 // Do we have additional words to descend? If not, return the
166 // value we're at right now.
167 if (match.second.empty()) {
170 return value->GetObjectForDotSeparatedPath(match.second);
176 if (this->GetType() == lldb::eStructuredDataTypeArray) {
177 std::pair<llvm::StringRef, llvm::StringRef> match = path.split('[');
178 if (match.second.size() == 0) {
179 return this->shared_from_this();
182 uint64_t val = strtoul(match.second.str().c_str(), NULL, 10);
184 return this->GetAsArray()->GetItemAtIndex(val);
189 return this->shared_from_this();
192 void StructuredData::Object::DumpToStdout(bool pretty_print) const {
194 Dump(stream, pretty_print);
195 llvm::outs() << stream.GetString();
198 void StructuredData::Array::Dump(Stream &s, bool pretty_print) const {
205 for (const auto &item_sp : m_items) {
216 item_sp->Dump(s, pretty_print);
226 void StructuredData::Integer::Dump(Stream &s, bool pretty_print) const {
227 s.Printf("%" PRIu64, m_value);
230 void StructuredData::Float::Dump(Stream &s, bool pretty_print) const {
231 s.Printf("%lg", m_value);
234 void StructuredData::Boolean::Dump(Stream &s, bool pretty_print) const {
236 s.PutCString("true");
238 s.PutCString("false");
241 void StructuredData::String::Dump(Stream &s, bool pretty_print) const {
243 const size_t strsize = m_value.size();
244 for (size_t i = 0; i < strsize; ++i) {
245 char ch = m_value[i];
246 if (ch == '"' || ch == '\\')
247 quoted.push_back('\\');
248 quoted.push_back(ch);
250 s.Printf("\"%s\"", quoted.c_str());
253 void StructuredData::Dictionary::Dump(Stream &s, bool pretty_print) const {
260 for (const auto &pair : m_dict) {
270 s << "\"" << pair.first.AsCString() << "\" : ";
271 pair.second->Dump(s, pretty_print);
281 void StructuredData::Null::Dump(Stream &s, bool pretty_print) const {
285 void StructuredData::Generic::Dump(Stream &s, bool pretty_print) const {
286 s << "0x" << m_object;