static JsonTreeNode ParseString(JsonTreeNode tree, Utf8String segment)
{
int pos;
if (segment.TrySearchAscii((Byte)'"', 1, out pos))
{
return(tree.AddValue(segment.Subbytes(0, pos + 1).Bytes, ValueNodeType.String));
}
else
{
throw new ParserException("no close string: " + segment);
}
}
/// <summary>
/// Expected null, boolean, integer, number
/// </summary>
/// <param name="segment"></param>
/// <param name="valueType"></param>
/// <param name="parentIndex"></param>
/// <returns></returns>
static JsonTreeNode ParsePrimitive(JsonTreeNode tree, Utf8String segment, ValueNodeType valueType)
{
int i = 1;
for (; i < segment.ByteLength; ++i)
{
if (Char.IsWhiteSpace((char)segment[i]) ||
segment[i] == '}' ||
segment[i] == ']' ||
segment[i] == ',' ||
segment[i] == ':'
)
{
break;
}
}
return(tree.AddValue(segment.Subbytes(0, i).Bytes, valueType));
}
static JsonTreeNode ParseArray(JsonTreeNode tree, Utf8String segment)
{
var array = tree.AddValue(segment.Bytes, ValueNodeType.Array);
var closeChar = ']';
bool isFirst = true;
var current = segment.Subbytes(1);
while (true)
{
{
// skip white space
int nextToken;
if (!current.TrySearchByte(x => !Char.IsWhiteSpace((char)x), out nextToken))
{
throw new ParserException("no white space expected");
}
current = current.Subbytes(nextToken);
}
{
if (current[0] == closeChar)
{
// end
break;
}
}
if (isFirst)
{
isFirst = false;
}
else
{
// search ',' or closeChar
int keyPos;
if (!current.TrySearchByte(x => x == ',', out keyPos))
{
throw new ParserException("',' expected");
}
current = current.Subbytes(keyPos + 1);
}
{
// skip white space
int nextToken;
if (!current.TrySearchByte(x => !Char.IsWhiteSpace((char)x), out nextToken))
{
throw new ParserException("not whitespace expected");
}
current = current.Subbytes(nextToken);
}
// value
var child = Parse(array, current);
current = current.Subbytes(child.Value.Segment.ByteLength);
}
// fix array range
var count = current.Bytes.Offset + 1 - segment.Bytes.Offset;
array.SetValueBytesCount(count);
return(array);
}
static JsonTreeNode ParseObject(JsonTreeNode tree, Utf8String segment)
{
var obj = tree.AddValue(segment.Bytes, ValueNodeType.Object);
var closeChar = '}';
bool isFirst = true;
var current = segment.Subbytes(1);
while (true)
{
{
// skip white space
int nextToken;
if (!current.TrySearchByte(x => !Char.IsWhiteSpace((char)x), out nextToken))
{
throw new ParserException("no white space expected");
}
current = current.Subbytes(nextToken);
}
{
if (current[0] == closeChar)
{
break;
}
}
if (isFirst)
{
isFirst = false;
}
else
{
// search ',' or closeChar
int keyPos;
if (!current.TrySearchByte(x => x == ',', out keyPos))
{
throw new ParserException("',' expected");
}
current = current.Subbytes(keyPos + 1);
}
{
// skip white space
int nextToken;
if (!current.TrySearchByte(x => !Char.IsWhiteSpace((char)x), out nextToken))
{
throw new ParserException("not whitespace expected");
}
current = current.Subbytes(nextToken);
}
// key
var key = Parse(obj, current);
if (!key.IsString())
{
throw new ParserException("object key must string: " + key.Value.Segment);
}
current = current.Subbytes(key.Value.Segment.ByteLength);
// search ':'
int valuePos;
if (!current.TrySearchByte(x => x == ':', out valuePos))
{
throw new ParserException(": is not found");
}
current = current.Subbytes(valuePos + 1);
{
// skip white space
int nextToken;
if (!current.TrySearchByte(x => !Char.IsWhiteSpace((char)x), out nextToken))
{
throw new ParserException("not whitespace expected");
}
current = current.Subbytes(nextToken);
}
// value
var value = Parse(obj, current);
current = current.Subbytes(value.Value.Segment.ByteLength);
}
// fix obj range
var count = current.Bytes.Offset + 1 - segment.Bytes.Offset;
obj.SetValueBytesCount(count);
return(obj);
}
public static IEnumerable <JsonTreeNode> GetNodes(this JsonTreeNode self,
JsonPointer jsonPointer)
{
if (jsonPointer.Path.Count == 0)
{
yield return(self);
yield break;
}
if (self.IsArray())
{
// array
if (jsonPointer[0][0] == '*')
{
// wildcard
foreach (var child in self.ArrayItems())
{
foreach (var childChild in child.GetNodes(jsonPointer.Unshift()))
{
yield return(childChild);
}
}
}
else
{
int index = jsonPointer[0].ToInt32();
var child = self.ArrayItems().Skip(index).First();
foreach (var childChild in child.GetNodes(jsonPointer.Unshift()))
{
yield return(childChild);
}
}
}
else if (self.IsObject())
{
// object
if (jsonPointer[0][0] == '*')
{
// wildcard
foreach (var kv in self.ObjectItems())
{
foreach (var childChild in kv.Value.GetNodes(jsonPointer.Unshift()))
{
yield return(childChild);
}
}
}
else
{
JsonTreeNode child;
try
{
child = self.ObjectItems().First(x => x.Key.GetUtf8String() == jsonPointer[0]).Value;
}
catch (Exception)
{
// key
self.AddKey(jsonPointer[0]);
// value
self.AddValue(default(ArraySegment <byte>), ValueNodeType.Object);
child = self.ObjectItems().First(x => x.Key.GetUtf8String() == jsonPointer[0]).Value;
}
foreach (var childChild in child.GetNodes(jsonPointer.Unshift()))
{
yield return(childChild);
}
}
}
else
{
throw new NotImplementedException();
}
}
