[Lldb-commits] [PATCH] D68179: [lldb] Fix JSON parser to allow empty arrays

[Alex Cameron via Phabricator via lldb-commits]

tetsuo-cpp updated this revision to Diff 222281.

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D68179/new/

https://reviews.llvm.org/D68179

Files:
  lldb/include/lldb/Utility/JSON.h
  lldb/source/Utility/JSON.cpp
  lldb/source/Utility/StructuredData.cpp
  lldb/tools/debugserver/source/JSON.cpp
  lldb/tools/debugserver/source/JSON.h


Index: lldb/tools/debugserver/source/JSON.h
===================================================================
--- lldb/tools/debugserver/source/JSON.h
+++ lldb/tools/debugserver/source/JSON.h
@@ -292,6 +292,8 @@
   JSONValue::SP ParseJSONValue();
 
 protected:
+  JSONValue::SP ParseJSONValue(const std::string &value, const Token &token);
+
   JSONValue::SP ParseJSONObject();
 
   JSONValue::SP ParseJSONArray();
Index: lldb/tools/debugserver/source/JSON.cpp
===================================================================
--- lldb/tools/debugserver/source/JSON.cpp
+++ lldb/tools/debugserver/source/JSON.cpp
@@ -516,13 +516,16 @@
   std::string value;
   std::string key;
   while (true) {
-    JSONValue::SP value_sp = ParseJSONValue();
+    JSONParser::Token token = GetToken(value);
+    if (token == JSONParser::Token::ArrayEnd)
+      return JSONValue::SP(array_up.release());
+    JSONValue::SP value_sp = ParseJSONValue(value, token);
     if (value_sp)
       array_up->AppendObject(value_sp);
     else
       break;
 
-    JSONParser::Token token = GetToken(value);
+    token = GetToken(value);
     if (token == JSONParser::Token::Comma) {
       continue;
     } else if (token == JSONParser::Token::ArrayEnd) {
@@ -537,6 +540,11 @@
 JSONValue::SP JSONParser::ParseJSONValue() {
   std::string value;
   const JSONParser::Token token = GetToken(value);
+  return ParseJSONValue(value, token);
+}
+
+JSONValue::SP JSONParser::ParseJSONValue(const std::string &value,
+                                         const Token &token) {
   switch (token) {
   case JSONParser::Token::ObjectStart:
     return ParseJSONObject();
Index: lldb/source/Utility/StructuredData.cpp
===================================================================
--- lldb/source/Utility/StructuredData.cpp
+++ lldb/source/Utility/StructuredData.cpp
@@ -24,6 +24,9 @@
 
 // Functions that use a JSONParser to parse JSON into StructuredData
 static StructuredData::ObjectSP ParseJSONValue(JSONParser &json_parser);
+static StructuredData::ObjectSP ParseJSONValue(JSONParser &json_parser,
+                                               const std::string &value,
+                                               const JSONParser::Token &token);
 static StructuredData::ObjectSP ParseJSONObject(JSONParser &json_parser);
 static StructuredData::ObjectSP ParseJSONArray(JSONParser &json_parser);
 
@@ -83,13 +86,17 @@
   std::string value;
   std::string key;
   while (true) {
-    StructuredData::ObjectSP value_sp = ParseJSONValue(json_parser);
+    JSONParser::Token token = json_parser.GetToken(value);
+    if (token == JSONParser::Token::ArrayEnd)
+      return StructuredData::ObjectSP(array_up.release());
+    StructuredData::ObjectSP value_sp =
+        ParseJSONValue(json_parser, value, token);
     if (value_sp)
       array_up->AddItem(value_sp);
     else
       break;
 
-    JSONParser::Token token = json_parser.GetToken(value);
+    token = json_parser.GetToken(value);
     if (token == JSONParser::Token::Comma) {
       continue;
     } else if (token == JSONParser::Token::ArrayEnd) {
@@ -104,6 +111,12 @@
 static StructuredData::ObjectSP ParseJSONValue(JSONParser &json_parser) {
   std::string value;
   const JSONParser::Token token = json_parser.GetToken(value);
+  return ParseJSONValue(json_parser, value, token);
+}
+
+static StructuredData::ObjectSP ParseJSONValue(JSONParser &json_parser,
+                                               const std::string &value,
+                                               const JSONParser::Token &token) {
   switch (token) {
   case JSONParser::Token::ObjectStart:
     return ParseJSONObject(json_parser);
Index: lldb/source/Utility/JSON.cpp
===================================================================
--- lldb/source/Utility/JSON.cpp
+++ lldb/source/Utility/JSON.cpp
@@ -485,13 +485,16 @@
   std::string value;
   std::string key;
   while (true) {
-    JSONValue::SP value_sp = ParseJSONValue();
+    JSONParser::Token token = GetToken(value);
+    if (token == JSONParser::Token::ArrayEnd)
+      return JSONValue::SP(array_up.release());
+    JSONValue::SP value_sp = ParseJSONValue(value, token);
     if (value_sp)
       array_up->AppendObject(value_sp);
     else
       break;
 
-    JSONParser::Token token = GetToken(value);
+    token = GetToken(value);
     if (token == JSONParser::Token::Comma) {
       continue;
     } else if (token == JSONParser::Token::ArrayEnd) {
@@ -506,6 +509,11 @@
 JSONValue::SP JSONParser::ParseJSONValue() {
   std::string value;
   const JSONParser::Token token = GetToken(value);
+  return ParseJSONValue(value, token);
+}
+
+JSONValue::SP JSONParser::ParseJSONValue(const std::string &value,
+                                         const Token &token) {
   switch (token) {
   case JSONParser::Token::ObjectStart:
     return ParseJSONObject();
Index: lldb/include/lldb/Utility/JSON.h
===================================================================
--- lldb/include/lldb/Utility/JSON.h
+++ lldb/include/lldb/Utility/JSON.h
@@ -274,6 +274,8 @@
   JSONValue::SP ParseJSONValue();
 
 protected:
+  JSONValue::SP ParseJSONValue(const std::string &value, const Token &token);
+
   JSONValue::SP ParseJSONObject();
 
   JSONValue::SP ParseJSONArray();

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