private int ReadString()
{
m_PrevChar = '\0';
while (m_CharBufferPosition < CharBufferLength)
{
var c = CharBuffer[m_CharBufferPosition];
if (c == '"' && m_PrevChar != '\\')
{
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
{
m_Stack.Push(JsonType.String);
m_Expected = JsonType.MemberSeparator;
}
break;
case JsonType.BeginArray:
{
m_Expected = JsonType.ValueSeparator | JsonType.EndArray;
}
break;
case JsonType.String:
{
m_Stack.Pop();
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
m_Expected = JsonType.ValueSeparator | JsonType.EndObject;
break;
case JsonType.BeginArray:
m_Expected = JsonType.ValueSeparator | JsonType.EndArray;
break;
default:
m_Expected = JsonType.Undefined;
break;
}
}
break;
}
return(k_ResultSuccess);
}
m_PrevChar = c;
m_CharBufferPosition++;
}
return(k_ResultEndOfStream);
}
int ReadString()
{
m_PrevChar = '\0';
while (m_CharBufferPosition < CharBufferLength)
{
var c = CharBuffer[m_CharBufferPosition];
if (c == '"' && m_PrevChar != '\\')
{
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
{
m_Stack.Push(JsonType.String);
m_Expected = JsonType.MemberSeparator;
}
break;
case JsonType.BeginArray:
{
m_Expected = JsonType.ValueSeparator | JsonType.EndArray;
}
break;
case JsonType.String:
{
m_Stack.Pop();
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
m_Expected = JsonType.ValueSeparator | JsonType.EndObject;
break;
case JsonType.BeginArray:
m_Expected = JsonType.ValueSeparator | JsonType.EndArray;
break;
default:
m_Expected = JsonType.Undefined;
break;
}
}
break;
case JsonType.Undefined:
{
// Special case of reading a string at the root. The assumption is this is a single string value and can not be followed by anything.
m_Expected = JsonType.EOF;
}
break;
}
return(k_ResultSuccess);
}
m_PrevChar = c;
m_CharBufferPosition++;
}
return(k_ResultEndOfStream);
}
public void Execute()
{
// Copy to locals from data ptr
m_CharBufferPosition = Data->CharBufferPosition;
m_Stack = Data->Stack;
m_PrevChar = Data->PrevChar;
m_Expected = Data->Expected;
m_LineCount = Data->LineCount;
m_LineStart = Data->LineStart;
m_PartialTokenType = Data->PartialTokenType;
m_PartialTokenState = Data->PartialTokenState;
switch (m_PartialTokenType)
{
case JsonType.String:
{
var result = ReadString();
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.String;
m_PartialTokenState = m_PartialTokenState + m_CharBufferPosition;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
m_CharBufferPosition++;
}
break;
case JsonType.Number:
{
var state = m_PartialTokenState;
var result = ReadNumber(ref state);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.Number;
m_PartialTokenState = state;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
}
break;
case JsonType.True:
{
var result = ReadTrue(m_PartialTokenState);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.True;
m_PartialTokenState += m_CharBufferPosition;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
}
break;
case JsonType.False:
{
var result = ReadFalse(m_PartialTokenState);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.False;
m_PartialTokenState += m_CharBufferPosition;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
}
break;
case JsonType.NaN | JsonType.Null:
{
// First try reading the value as `null`
var start = m_CharBufferPosition;
var result = ReadNull(m_PartialTokenState);
if (result == k_ResultSuccess)
{
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
break;
}
if (result == k_ResultEndOfStream)
{
// Otherwise we know it can only be `null`
m_PartialTokenState += m_CharBufferPosition;
m_PartialTokenType = JsonType.Null;
Break(JsonType.EOF);
return;
}
// The value can not be `null` at this point.
// Check for `nan`
m_CharBufferPosition = start;
result = ReadNaN(m_PartialTokenState);
if (result == k_ResultSuccess)
{
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
break;
}
if (result == k_ResultEndOfStream)
{
m_PartialTokenState += m_CharBufferPosition;
m_PartialTokenType = JsonType.NaN;
Break(JsonType.EOF);
return;
}
Break(JsonType.Undefined);
}
break;
case JsonType.Null:
{
var result = ReadNull(m_PartialTokenState);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.Null;
m_PartialTokenState += m_CharBufferPosition;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
}
break;
case JsonType.NaN:
{
var result = ReadNaN(m_PartialTokenState);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.NaN;
m_PartialTokenState += m_CharBufferPosition;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
}
break;
case JsonType.Infinity:
{
var result = ReadInfinity(m_PartialTokenState);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.Infinity;
m_PartialTokenState += m_CharBufferPosition;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
}
break;
}
while (m_CharBufferPosition < CharBufferLength)
{
var c = CharBuffer[m_CharBufferPosition];
switch (c)
{
case '{':
{
if (!IsExpected(JsonType.BeginObject))
{
Break(JsonType.BeginObject);
return;
}
m_Stack.Push(JsonType.BeginObject);
m_Expected = JsonType.String | JsonType.EndObject;
}
break;
case '[':
{
if (!IsExpected(JsonType.BeginArray))
{
Break(JsonType.BeginArray);
return;
}
m_Stack.Push(JsonType.BeginArray);
m_Expected = JsonType.Value | JsonType.EndArray;
}
break;
case '}':
{
if (!IsExpected(JsonType.EndObject))
{
Break(JsonType.EndObject);
return;
}
m_Stack.Pop();
if (m_Stack.Peek() == JsonType.String)
{
m_Stack.Pop();
}
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
m_Expected = JsonType.ValueSeparator | JsonType.EndObject;
break;
case JsonType.BeginArray:
m_Expected = JsonType.ValueSeparator | JsonType.EndArray;
break;
default:
m_Expected = JsonType.EOF;
break;
}
}
break;
case ']':
{
if (!IsExpected(JsonType.EndArray))
{
Break(JsonType.EndArray);
return;
}
m_Stack.Pop();
if (m_Stack.Peek() == JsonType.String)
{
m_Stack.Pop();
}
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
m_Expected = JsonType.ValueSeparator | JsonType.EndObject;
break;
case JsonType.BeginArray:
m_Expected = JsonType.ValueSeparator | JsonType.EndArray;
break;
default:
m_Expected = JsonType.EOF;
break;
}
}
break;
case ' ':
case '\t':
case '\r':
break;
case '\n':
{
m_LineCount++;
m_LineStart = m_CharBufferPosition;
}
break;
case ':':
{
if (!IsExpected(JsonType.MemberSeparator))
{
Break(JsonType.MemberSeparator);
return;
}
m_Expected = JsonType.Value;
}
break;
case ',':
{
if (!IsExpected(JsonType.ValueSeparator))
{
Break(JsonType.ValueSeparator);
return;
}
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
m_Expected = JsonType.String;
break;
case JsonType.BeginArray:
m_Expected = JsonType.Value;
break;
default:
m_Expected = JsonType.Undefined;
break;
}
}
break;
case '"':
{
if (!IsExpected(JsonType.String))
{
Break(JsonType.String);
return;
}
var start = m_CharBufferPosition;
m_CharBufferPosition++;
var result = ReadString();
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.String;
m_PartialTokenState = m_CharBufferPosition - start;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
}
break;
case '-':
{
if (!IsExpected(JsonType.Negative))
{
Break(JsonType.Negative);
return;
}
m_Expected = JsonType.Number | JsonType.Infinity;
}
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
{
if (!IsExpected(JsonType.Number))
{
Break(JsonType.Number);
return;
}
var state = 0;
var result = ReadNumber(ref state);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.Number;
m_PartialTokenState = state;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_CharBufferPosition--;
}
break;
case 'T':
case 't':
{
if (!IsExpected(JsonType.True))
{
Break(JsonType.True);
return;
}
var start = m_CharBufferPosition;
var result = ReadTrue(0);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.True;
m_PartialTokenState = m_CharBufferPosition - start;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_CharBufferPosition--;
}
break;
case 'F':
case 'f':
{
if (!IsExpected(JsonType.False))
{
Break(JsonType.False);
return;
}
var start = m_CharBufferPosition;
var result = ReadFalse(0);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.False;
m_PartialTokenState = m_CharBufferPosition - start;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_CharBufferPosition--;
}
break;
case 'N':
case 'n':
{
if (!IsExpected(JsonType.Null) && !IsExpected(JsonType.NaN))
{
Break(JsonType.Null | JsonType.NaN);
return;
}
// First try reading the value as `null`
var start = m_CharBufferPosition;
var result = ReadNull(0);
if (result == k_ResultSuccess)
{
m_CharBufferPosition--;
break;
}
if (result == k_ResultEndOfStream)
{
if (m_CharBufferPosition - start == 1)
{
// Very special case. We only looked at the first character "n" then hit EndOfStream
// which means it could still be a `NaN` or `Null`
m_PartialTokenState = m_CharBufferPosition - start;
m_PartialTokenType = JsonType.Null | JsonType.NaN;
Break(JsonType.EOF);
}
else
{
// Otherwise we know it can only be `null`
m_PartialTokenState = m_CharBufferPosition - start;
m_PartialTokenType = JsonType.Null;
Break(JsonType.EOF);
}
return;
}
// The value can not be `null` at this point.
// Check for `nan`
m_CharBufferPosition = start;
result = ReadNaN(0);
if (result == k_ResultSuccess)
{
m_CharBufferPosition--;
break;
}
if (result == k_ResultEndOfStream)
{
m_PartialTokenState = m_CharBufferPosition - start;
m_PartialTokenType = JsonType.NaN;
Break(JsonType.EOF);
return;
}
Break(JsonType.Undefined);
}
break;
case 'I':
case 'i':
{
if (!IsExpected(JsonType.Infinity))
{
Break(JsonType.Infinity);
return;
}
var start = m_CharBufferPosition;
var result = ReadInfinity(0);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.Infinity;
m_PartialTokenState = m_CharBufferPosition - start;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_CharBufferPosition--;
}
break;
default:
{
Break(JsonType.Undefined);
return;
}
}
m_CharBufferPosition++;
}
m_PartialTokenType = JsonType.Undefined;
Break(JsonType.EOF);
}
public void Execute()
{
// Copy to locals from data ptr
m_CharBufferPosition = Data->CharBufferPosition;
m_Stack = Data->Stack;
m_PrevChar = Data->PrevChar;
m_Expected = Data->Expected;
m_LineCount = Data->LineCount;
m_LineStart = Data->LineStart;
m_PartialTokenType = Data->PartialTokenType;
m_PartialTokenState = Data->PartialTokenState;
switch (m_PartialTokenType)
{
case JsonType.String:
{
var result = ReadString();
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.String;
m_PartialTokenState = m_PartialTokenState + m_CharBufferPosition;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
m_CharBufferPosition++;
}
break;
case JsonType.Number:
{
var state = m_PartialTokenState;
var result = ReadNumber(ref state);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.Number;
m_PartialTokenState = state;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
}
break;
case JsonType.True:
{
var result = ReadTrue(m_PartialTokenState);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.True;
m_PartialTokenState += m_CharBufferPosition;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
}
break;
case JsonType.False:
{
var result = ReadFalse(m_PartialTokenState);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.False;
m_PartialTokenState += m_CharBufferPosition;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
}
break;
case JsonType.Null:
{
var result = ReadNull(m_PartialTokenState);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.Null;
m_PartialTokenState += m_CharBufferPosition;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_PartialTokenType = JsonType.Undefined;
m_PartialTokenState = 0;
}
break;
}
while (m_CharBufferPosition < CharBufferLength)
{
var c = CharBuffer[m_CharBufferPosition];
switch (c)
{
case '{':
{
if (!IsExpected(JsonType.BeginObject))
{
Break(JsonType.BeginObject);
return;
}
m_Stack.Push(JsonType.BeginObject);
m_Expected = JsonType.String | JsonType.EndObject;
}
break;
case '[':
{
if (!IsExpected(JsonType.BeginArray))
{
Break(JsonType.BeginArray);
return;
}
m_Stack.Push(JsonType.BeginArray);
m_Expected = JsonType.Value | JsonType.EndArray;
}
break;
case '}':
{
if (!IsExpected(JsonType.EndObject))
{
Break(JsonType.EndObject);
return;
}
m_Stack.Pop();
if (m_Stack.Peek() == JsonType.String)
{
m_Stack.Pop();
}
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
m_Expected = JsonType.ValueSeparator | JsonType.EndObject;
break;
case JsonType.BeginArray:
m_Expected = JsonType.ValueSeparator | JsonType.EndArray;
break;
default:
m_Expected = JsonType.EOF;
break;
}
}
break;
case ']':
{
if (!IsExpected(JsonType.EndArray))
{
Break(JsonType.EndArray);
return;
}
m_Stack.Pop();
if (m_Stack.Peek() == JsonType.String)
{
m_Stack.Pop();
}
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
m_Expected = JsonType.ValueSeparator | JsonType.EndObject;
break;
case JsonType.BeginArray:
m_Expected = JsonType.ValueSeparator | JsonType.EndArray;
break;
default:
m_Expected = JsonType.EOF;
break;
}
}
break;
case ' ':
case '\t':
case '\r':
break;
case '\n':
{
m_LineCount++;
m_LineStart = m_CharBufferPosition;
}
break;
case ':':
{
if (!IsExpected(JsonType.MemberSeparator))
{
Break(JsonType.MemberSeparator);
return;
}
m_Expected = JsonType.Value;
}
break;
case ',':
{
if (!IsExpected(JsonType.ValueSeparator))
{
Break(JsonType.ValueSeparator);
return;
}
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
m_Expected = JsonType.String;
break;
case JsonType.BeginArray:
m_Expected = JsonType.Value;
break;
default:
m_Expected = JsonType.Undefined;
break;
}
}
break;
case '"':
{
if (!IsExpected(JsonType.String))
{
Break(JsonType.String);
return;
}
var start = m_CharBufferPosition;
m_CharBufferPosition++;
var result = ReadString();
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.String;
m_PartialTokenState = m_CharBufferPosition - start;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
}
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case '-':
{
if (!IsExpected(JsonType.Number))
{
Break(JsonType.Number);
return;
}
var state = 0;
var result = ReadNumber(ref state);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.Number;
m_PartialTokenState = state;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_CharBufferPosition--;
}
break;
case 't':
{
if (!IsExpected(JsonType.True))
{
Break(JsonType.True);
return;
}
var start = m_CharBufferPosition;
var result = ReadTrue(0);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.True;
m_PartialTokenState = m_CharBufferPosition - start;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_CharBufferPosition--;
}
break;
case 'f':
{
if (!IsExpected(JsonType.False))
{
Break(JsonType.False);
return;
}
var start = m_CharBufferPosition;
var result = ReadFalse(0);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.False;
m_PartialTokenState = m_CharBufferPosition - start;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_CharBufferPosition--;
}
break;
case 'n':
{
if (!IsExpected(JsonType.Null))
{
Break(JsonType.Null);
return;
}
var start = m_CharBufferPosition;
var result = ReadNull(0);
if (result != k_ResultSuccess)
{
m_PartialTokenType = JsonType.Null;
m_PartialTokenState = m_CharBufferPosition - start;
Break(result == k_ResultEndOfStream ? JsonType.EOF : JsonType.Undefined);
return;
}
m_CharBufferPosition--;
}
break;
default:
{
Break(JsonType.Undefined);
return;
}
}
m_CharBufferPosition++;
}
Break(JsonType.EOF);
}
int ReadPrimitive()
{
while (m_CharBufferPosition < CharBufferLength)
{
var c = CharBuffer[m_CharBufferPosition];
if (c == '\t' ||
c == '\r' ||
c == '\n' ||
c == ',' ||
c == ' ' ||
c == ':' ||
c == '=' ||
c == ']' ||
c == '}' ||
c == '{' ||
c == '[')
{
switch (m_Stack.Peek())
{
case JsonType.Undefined:
case JsonType.BeginObject:
{
m_Stack.Push(JsonType.String);
m_Expected = JsonType.MemberSeparator;
}
break;
case JsonType.BeginArray:
{
m_Expected = JsonType.ValueSeparator | JsonType.EndArray;
}
break;
case JsonType.String:
{
m_Stack.Pop();
switch (m_Stack.Peek())
{
case JsonType.BeginObject:
m_Expected = JsonType.ValueSeparator | JsonType.EndObject;
break;
case JsonType.BeginArray:
m_Expected = JsonType.ValueSeparator | JsonType.EndArray;
break;
default:
m_Expected = JsonType.Undefined;
break;
}
}
break;
}
m_CharBufferPosition--;
return(k_ResultSuccess);
}
m_PrevChar = c;
m_CharBufferPosition++;
}
// Special case, we are looking at a partial value of a root un scoped object.
// This is technically valid even though we may be receiving more data.
if (m_Stack.Peek() == JsonType.String && m_Stack.Peek(1) == JsonType.Undefined)
{
m_Expected |= JsonType.EOF;
}
m_PartialTokenType = JsonType.Value;
return(k_ResultEndOfStream);
}
