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ThunkWriter.cs
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ThunkWriter.cs
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using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
namespace Jil.Serialize
{
delegate void StringThunkDelegate<T>(ref ThunkWriter writer, T data, int depth);
#region Strings and Enums and oh god why
// Oh my god what is going one here?
//
// Basically I've embedded all the different common JSON strings
// into a bunch of losely grouped together arrays.
// Each of these arrays should fit in a single cache line (<= 64 bytes)
// on a modern CPU.
//
// Each array has a paired enum that is used to actually call
// write on in the ThunkWriter. Each enum value encodes
// some index/length information (sometimes parts are inferred)
// which is used to pick where (and how much) of an array to copy
// The enums are all smaller than an long.
enum ConstantString_Common : ushort
{
DoubleBackSlash = (0 << 8) | 2,
EscapeSequence_2028 = (2 << 8) | 6,
EscapeSequence_2029 = (8 << 8) | 6,
EscapeSequence_b = (14 << 8) | 2,
EscapeSequence_t = (16 << 8) | 2,
EscapeSequence_n = (18 << 8) | 2,
EscapeSequence_f = (20 << 8) | 2,
EscapeSequence_r = (22 << 8) | 2
}
enum ConstantString_Formatting : ushort
{
Quote = (11 << 8) | 1,
BackSlashQuote = (14 << 8) | 2,
OpenCurlyBrace = (18 << 8) | 1,
Comma = (16 << 8) | 1,
CloseCurlyBrace = (19 << 8) | 1,
OpenSquareBrace = (20 << 8) | 1,
Space = (1 << 8) | 1,
CommaSpace = (16 << 8) | 2,
CloseSquareBrace = (21 << 8) | 1,
QuoteColon = (11 << 8) | 2,
QuoteColonSpace = (11 << 8) | 3,
ColonSpace = (12 << 8) | 2,
Colon = (12 << 8) | 1,
NewLine = (0 << 8) | 1,
NewLine1Space = (0 << 8) | 2,
NewLine2Space = (0 << 8) | 3,
NewLine3Space = (0 << 8) | 4,
NewLine4Space = (0 << 8) | 5,
NewLine5Space = (0 << 8) | 6,
NewLine6Space = (0 << 8) | 7,
NewLine7Space = (0 << 8) | 8,
NewLine8Space = (0 << 8) | 9,
NewLine9Space = (0 << 8) | 10,
NewLine10Space = (0 << 8) | 11
}
enum ConstantString_Min : ushort
{
Int_MinValue = (0 << 8) | 11,
Long_MinValue = (12 << 8) | 20
}
enum ConstantString_Value : ushort
{
Null = (0 << 8) | 4,
Date = (4 << 8) | 8,
CloseDate = (12 << 8) | 4,
True = (16 << 8) | 4,
False = (20 << 8) | 5
}
enum ConstantString_000Escape : byte
{
EscapeSequence_0000 = 0,
EscapeSequence_0001 = 1,
EscapeSequence_0002 = 2,
EscapeSequence_0003 = 3,
EscapeSequence_0004 = 4,
EscapeSequence_0005 = 5,
EscapeSequence_0006 = 6,
EscapeSequence_0007 = 7,
EscapeSequence_000B = 8,
EscapeSequence_000E = 9,
EscapeSequence_000F = 10
}
enum ConstantString_001Escape : byte
{
EscapeSequence_0010 = 0,
EscapeSequence_0011 = 1,
EscapeSequence_0012 = 2,
EscapeSequence_0013 = 3,
EscapeSequence_0014 = 4,
EscapeSequence_0015 = 5,
EscapeSequence_0016 = 6,
EscapeSequence_0017 = 7,
EscapeSequence_0018 = 8,
EscapeSequence_0019 = 9,
EscapeSequence_001A = 10,
EscapeSequence_001B = 11,
EscapeSequence_001C = 12,
EscapeSequence_001D = 13,
EscapeSequence_001E = 14,
EscapeSequence_001F = 15
}
static class ThunkWriterCharArrays
{
public static readonly char[] Escape000Prefix = new char[] { '\\', 'u', '0', '0', '0' };
public static readonly char[] Escape001Prefix = new char[] { '\\', 'u', '0', '0', '1' };
public static readonly char[] ConstantString_Common_Chars = new char[] { '\\', '\\', '\\', 'u', '2', '0', '2', '8', '\\', 'u', '2', '0', '2', '9', '\\', 'b', '\\', 't', '\\', 'n', '\\', 'f', '\\', 'r' };
public static readonly char[] ConstantString_Formatting_Chars = new char[] { '\n', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '"', ':', ' ', '\\', '"', ',', ' ', '{', '}', '[', ']' };
public static readonly char[] ConstantString_Min_Chars = new char[] { '-', '2', '1', '4', '7', '4', '8', '3', '6', '4', '8', '-', '9', '2', '2', '3', '3', '7', '2', '0', '3', '6', '8', '5', '4', '7', '7', '5', '8', '0', '8' };
public static readonly char[] ConstantString_Value_Chars = new char[] { 'n', 'u', 'l', 'l', '"', '\\', '/', 'D', 'a', 't', 'e', '(', ')', '\\', '/', '"', 't', 'r', 'u', 'e', 'f', 'a', 'l', 's', 'e' };
public static readonly char[] ConstantString_000Escape_Chars = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', 'B', 'E', 'F' };
public static readonly char[] ConstantString_001Escape_Chars = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
}
#endregion
partial struct ThunkWriter
{
StringBuilder Builder;
public static bool IsConstantCommonString(string str, out ConstantString_Common c)
{
switch (str)
{
case @"\\": c = ConstantString_Common.DoubleBackSlash; return true;
case @"\u2028": c = ConstantString_Common.EscapeSequence_2028; return true;
case @"\u2029": c = ConstantString_Common.EscapeSequence_2029; return true;
case @"\b": c = ConstantString_Common.EscapeSequence_b; return true;
case @"\t": c = ConstantString_Common.EscapeSequence_t; return true;
case @"\n": c = ConstantString_Common.EscapeSequence_n; return true;
case @"\f": c = ConstantString_Common.EscapeSequence_f; return true;
case @"\r": c = ConstantString_Common.EscapeSequence_r; return true;
default: c = 0; return false;
}
}
public static bool IsConstantFormattingString(string str, out ConstantString_Formatting c)
{
switch(str)
{
case "\"": c = ConstantString_Formatting.Quote; return true;
case "\\\"": c = ConstantString_Formatting.BackSlashQuote; return true;
case "{": c = ConstantString_Formatting.OpenCurlyBrace; return true;
case ",": c = ConstantString_Formatting.Comma; return true;
case "}": c = ConstantString_Formatting.CloseCurlyBrace; return true;
case "[": c = ConstantString_Formatting.OpenSquareBrace; return true;
case " ": c = ConstantString_Formatting.Space; return true;
case ", ": c = ConstantString_Formatting.CommaSpace; return true;
case "]": c = ConstantString_Formatting.CloseSquareBrace; return true;
case "\":": c = ConstantString_Formatting.QuoteColon; return true;
case "\": ": c = ConstantString_Formatting.QuoteColonSpace; return true;
case ": ": c = ConstantString_Formatting.ColonSpace; return true;
case ":": c = ConstantString_Formatting.Colon; return true;
case "\n": c = ConstantString_Formatting.NewLine; return true;
case "\n ": c = ConstantString_Formatting.NewLine1Space; return true;
case "\n ": c = ConstantString_Formatting.NewLine2Space; return true;
case "\n ": c = ConstantString_Formatting.NewLine3Space; return true;
case "\n ": c = ConstantString_Formatting.NewLine4Space; return true;
case "\n ": c = ConstantString_Formatting.NewLine5Space; return true;
case "\n ": c = ConstantString_Formatting.NewLine6Space; return true;
case "\n ": c = ConstantString_Formatting.NewLine7Space; return true;
case "\n ": c = ConstantString_Formatting.NewLine8Space; return true;
case "\n ": c = ConstantString_Formatting.NewLine9Space; return true;
case "\n ": c = ConstantString_Formatting.NewLine10Space; return true;
default: c = 0; return false;
}
}
public static bool IsConstantMinString(string str, out ConstantString_Min c)
{
switch (str)
{
case "-2147483648": c = ConstantString_Min.Int_MinValue; return true;
case "-9223372036854775808": c = ConstantString_Min.Long_MinValue; return true;
default: c = 0; return false;
}
}
public static bool IsConstantValueString(string str, out ConstantString_Value c)
{
switch (str)
{
case "null": c = ConstantString_Value.Null; return true;
case "\"\\/Date(": c = ConstantString_Value.Date; return true;
case ")\\/\"": c = ConstantString_Value.CloseDate; return true;
case "true": c = ConstantString_Value.True; return true;
case "false": c = ConstantString_Value.False; return true;
default: c = 0; return false;
}
}
public static bool IsConstant000EscapeString(string str, out ConstantString_000Escape c)
{
switch (str)
{
case @"\u0000": c = ConstantString_000Escape.EscapeSequence_0000; return true;
case @"\u0001": c = ConstantString_000Escape.EscapeSequence_0001; return true;
case @"\u0002": c = ConstantString_000Escape.EscapeSequence_0002; return true;
case @"\u0003": c = ConstantString_000Escape.EscapeSequence_0003; return true;
case @"\u0004": c = ConstantString_000Escape.EscapeSequence_0004; return true;
case @"\u0005": c = ConstantString_000Escape.EscapeSequence_0005; return true;
case @"\u0006": c = ConstantString_000Escape.EscapeSequence_0006; return true;
case @"\u0007": c = ConstantString_000Escape.EscapeSequence_0007; return true;
case @"\u000B": c = ConstantString_000Escape.EscapeSequence_000B; return true;
case @"\u000E": c = ConstantString_000Escape.EscapeSequence_000E; return true;
case @"\u000F": c = ConstantString_000Escape.EscapeSequence_000F; return true;
default: c = 0; return false;
}
}
public static bool IsConstant001EscapeString(string str, out ConstantString_001Escape c)
{
switch (str)
{
case @"\u0010": c = ConstantString_001Escape.EscapeSequence_0010; return true;
case @"\u0011": c = ConstantString_001Escape.EscapeSequence_0011; return true;
case @"\u0012": c = ConstantString_001Escape.EscapeSequence_0012; return true;
case @"\u0013": c = ConstantString_001Escape.EscapeSequence_0013; return true;
case @"\u0014": c = ConstantString_001Escape.EscapeSequence_0014; return true;
case @"\u0015": c = ConstantString_001Escape.EscapeSequence_0015; return true;
case @"\u0016": c = ConstantString_001Escape.EscapeSequence_0016; return true;
case @"\u0017": c = ConstantString_001Escape.EscapeSequence_0017; return true;
case @"\u0018": c = ConstantString_001Escape.EscapeSequence_0018; return true;
case @"\u0019": c = ConstantString_001Escape.EscapeSequence_0019; return true;
case @"\u001A": c = ConstantString_001Escape.EscapeSequence_001A; return true;
case @"\u000B": c = ConstantString_001Escape.EscapeSequence_001B; return true;
case @"\u000C": c = ConstantString_001Escape.EscapeSequence_001C; return true;
case @"\u000D": c = ConstantString_001Escape.EscapeSequence_001D; return true;
case @"\u000E": c = ConstantString_001Escape.EscapeSequence_001E; return true;
case @"\u000F": c = ConstantString_001Escape.EscapeSequence_001F; return true;
default: c = 0; return false;
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Init()
{
Builder = (Builder ?? new StringBuilder()).Clear();
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(float f)
{
Write(f.ToString(CultureInfo.InvariantCulture));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(double d)
{
Write(d.ToString(CultureInfo.InvariantCulture));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(decimal m)
{
Write(m.ToString(CultureInfo.InvariantCulture));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(char[] ch, int startIx, int len)
{
Builder.Append(ch, startIx, len);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write(char ch)
{
Builder.Append(ch);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void WriteCommonConstant(ConstantString_Common str)
{
var asUShort = (ushort)(ConstantString_Common)str;
var ix = asUShort >> 8;
var size = asUShort & 0xFF;
Builder.Append(ThunkWriterCharArrays.ConstantString_Common_Chars, ix, size);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void WriteFormattingConstant(ConstantString_Formatting str)
{
var asUShort = (ushort)str;
var ix = (asUShort >> 8);
var len = asUShort & 0xFF;
Builder.Append(ThunkWriterCharArrays.ConstantString_Formatting_Chars, ix, len);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void WriteMinConstant(ConstantString_Min str)
{
var asUShort = (ushort)str;
var ix = (asUShort >> 8);
var len = asUShort & 0xFF;
Builder.Append(ThunkWriterCharArrays.ConstantString_Min_Chars, ix, len);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void WriteValueConstant(ConstantString_Value str)
{
var asUShort = (ushort)str;
var ix = (asUShort >> 8);
var len = asUShort & 0xFF;
Builder.Append(ThunkWriterCharArrays.ConstantString_Value_Chars, ix, len);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write000EscapeConstant(ConstantString_000Escape str)
{
var ix = (byte)str;
Builder.Append(ThunkWriterCharArrays.Escape000Prefix);
Builder.Append(ThunkWriterCharArrays.ConstantString_000Escape_Chars[ix]);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void Write001EscapeConstant(ConstantString_001Escape str)
{
var ix = (byte)str;
Builder.Append(ThunkWriterCharArrays.Escape001Prefix);
Builder.Append(ThunkWriterCharArrays.ConstantString_001Escape_Chars[ix]);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public unsafe void Write(string strRef)
{
Builder.Append(strRef);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public string StaticToString()
{
return Builder.ToString();
}
#region Slow Builds Only
// these methods are only called to compare faster methods to serializing
// as such they need not be optimized
public void Write(byte b)
{
Write(b.ToString());
}
public void Write(sbyte b)
{
Write(b.ToString());
}
public void Write(short b)
{
Write(b.ToString());
}
public void Write(ushort b)
{
Write(b.ToString());
}
public void Write(int b)
{
Write(b.ToString());
}
public void Write(uint b)
{
Write(b.ToString());
}
public void Write(long b)
{
Write(b.ToString());
}
public void Write(ulong b)
{
Write(b.ToString());
}
#endregion
}
}