Merge pull request #124 from cdunn2001/assign-with-comments

1.2.0

 `operator=()` (which already performed a deep-copy) now includes comments. This change is probably harmless in all practical cases. But just in case, we bump the minor version.

Address #47.

include/json/value.h

@@ -235,23 +235,26 @@ Json::Value obj_value(Json::objectValue); // {}
   Value(const CppTL::ConstString& value);
 #endif
   Value(bool value);
+  /// Deep copy.
   Value(const Value& other);
   ~Value();
 
+  // Deep copy, then swap(other).
   Value& operator=(Value other);
-  /// Swap values.
+  /// Swap everything.
   void swap(Value& other);
+  /// Swap values but leave comments and source offsets in place.
+  void swapPayload(Value& other);
 
   ValueType type() const;
 
+  /// Compare payload only, not comments etc.
   bool operator<(const Value& other) const;
   bool operator<=(const Value& other) const;
   bool operator>=(const Value& other) const;
   bool operator>(const Value& other) const;
-
   bool operator==(const Value& other) const;
   bool operator!=(const Value& other) const;
-
   int compare(const Value& other) const;
 
   const char* asCString() const;
@@ -442,9 +445,6 @@ private:
 
   Value& resolveReference(const char* key, bool isStatic);
 
-  /// Swap values but leave comments and source offsets in place.
-  void swapPayload(Value& other);
-
 #ifdef JSON_VALUE_USE_INTERNAL_MAP
   inline bool isItemAvailable() const { return itemIsUsed_ == 0; }
 

include/json/version.h

@@ -4,10 +4,10 @@
 #ifndef JSON_VERSION_H_INCLUDED
 # define JSON_VERSION_H_INCLUDED
 
-# define JSONCPP_VERSION_STRING "1.1.1"
+# define JSONCPP_VERSION_STRING "1.2.0"
 # define JSONCPP_VERSION_MAJOR 1
-# define JSONCPP_VERSION_MINOR 1
+# define JSONCPP_VERSION_MINOR 2
-# define JSONCPP_VERSION_PATCH 1
+# define JSONCPP_VERSION_PATCH 0
 # define JSONCPP_VERSION_QUALIFIER
 # define JSONCPP_VERSION_HEXA ((JSONCPP_VERSION_MAJOR << 24) | (JSONCPP_VERSION_MINOR << 16) | (JSONCPP_VERSION_PATCH << 8))
 

src/lib_json/json_reader.cpp

@@ -163,26 +163,36 @@ bool Reader::readValue() {
     successful = decodeString(token);
     break;
   case tokenTrue:
-    currentValue() = true;
+    {
+    Value v(true);
+    currentValue().swapPayload(v);
     currentValue().setOffsetStart(token.start_ - begin_);
     currentValue().setOffsetLimit(token.end_ - begin_);
+    }
     break;
   case tokenFalse:
-    currentValue() = false;
+    {
+    Value v(false);
+    currentValue().swapPayload(v);
     currentValue().setOffsetStart(token.start_ - begin_);
     currentValue().setOffsetLimit(token.end_ - begin_);
+    }
     break;
   case tokenNull:
-    currentValue() = Value();
+    {
+    Value v;
+    currentValue().swapPayload(v);
     currentValue().setOffsetStart(token.start_ - begin_);
     currentValue().setOffsetLimit(token.end_ - begin_);
+    }
     break;
   case tokenArraySeparator:
     if (features_.allowDroppedNullPlaceholders_) {
       // "Un-read" the current token and mark the current value as a null
       // token.
       current_--;
-      currentValue() = Value();
+      Value v;
+      currentValue().swapPayload(v);
       currentValue().setOffsetStart(current_ - begin_ - 1);
       currentValue().setOffsetLimit(current_ - begin_);
       break;
@@ -393,7 +403,8 @@ bool Reader::readString() {
 bool Reader::readObject(Token& tokenStart) {
   Token tokenName;
   std::string name;
-  currentValue() = Value(objectValue);
+  Value init(objectValue);
+  currentValue().swapPayload(init);
   currentValue().setOffsetStart(tokenStart.start_ - begin_);
   while (readToken(tokenName)) {
     bool initialTokenOk = true;
@@ -446,7 +457,8 @@ bool Reader::readObject(Token& tokenStart) {
 }
 
 bool Reader::readArray(Token& tokenStart) {
-  currentValue() = Value(arrayValue);
+  Value init(arrayValue);
+  currentValue().swapPayload(init);
   currentValue().setOffsetStart(tokenStart.start_ - begin_);
   skipSpaces();
   if (*current_ == ']') // empty array
@@ -486,7 +498,7 @@ bool Reader::decodeNumber(Token& token) {
   Value decoded;
   if (!decodeNumber(token, decoded))
     return false;
-  currentValue() = decoded;
+  currentValue().swapPayload(decoded);
   currentValue().setOffsetStart(token.start_ - begin_);
   currentValue().setOffsetLimit(token.end_ - begin_);
   return true;
@@ -536,7 +548,7 @@ bool Reader::decodeDouble(Token& token) {
   Value decoded;
   if (!decodeDouble(token, decoded))
     return false;
-  currentValue() = decoded;
+  currentValue().swapPayload(decoded);
   currentValue().setOffsetStart(token.start_ - begin_);
   currentValue().setOffsetLimit(token.end_ - begin_);
   return true;
@@ -579,10 +591,11 @@ bool Reader::decodeDouble(Token& token, Value& decoded) {
 }
 
 bool Reader::decodeString(Token& token) {
-  std::string decoded;
+  std::string decoded_string;
-  if (!decodeString(token, decoded))
+  if (!decodeString(token, decoded_string))
     return false;
-  currentValue() = decoded;
+  Value decoded(decoded_string);
+  currentValue().swapPayload(decoded);
   currentValue().setOffsetStart(token.start_ - begin_);
   currentValue().setOffsetLimit(token.end_ - begin_);
   return true;

src/lib_json/json_value.cpp

@@ -406,7 +406,7 @@ Value::~Value() {
 }
 
 Value& Value::operator=(Value other) {
-  swapPayload(other);
+  swap(other);
   return *this;
 }
 

test/data/test_comment_01.expected

@@ -1,4 +1,5 @@
 .={}
+// Comment for array
 .test=[]
 .test[0]={}
 .test[0].a="aaa"

test/data/test_comment_01.json

@@ -1,5 +1,6 @@
 {
     "test":
+    // Comment for array
     [
        { "a" : "aaa" }, // Comment for a
        { "b" : "bbb" }, // Comment for b

test/data/test_comment_02.expected

@@ -11,4 +11,13 @@
 // Multiline comment cpp-style
 // Second line
 .cpp-test.c=3
-.cpp-test.d=4
+// Comment before double
+.cpp-test.d=4.1
+// Comment before string
+.cpp-test.e="e-string"
+// Comment before true
+.cpp-test.f=true
+// Comment before false
+.cpp-test.g=false
+// Comment before null
+.cpp-test.h=null

test/data/test_comment_02.json

@@ -12,6 +12,15 @@
       // Multiline comment cpp-style
       // Second line
       "c" : 3,
-      "d" : 4
+      // Comment before double
+      "d" : 4.1,
+      // Comment before string
+      "e" : "e-string",
+      // Comment before true
+      "f" : true,
+      // Comment before false
+      "g" : false,
+      // Comment before null
+      "h" : null
    }
 }

version

@@ -1 +1 @@
-1.1.1
+1.2.0