raylib-beef/generator/Program.cs
2023-03-19 23:44:11 -04:00

334 lines
No EOL
11 KiB
C#

using Newtonsoft.Json;
using System;
using System.Text;
using System.Text.RegularExpressions;
namespace RaylibBeefGenerator
{
public static class Program
{
// Number of tabs we are in.
private static int TabIndex = 0;
// Current Output Beef Code
private static StringBuilder OutputString = new StringBuilder();
private static string OutputDir = @"C:\Dev\raylib-beef\raylib-beef\src\";
private static Root API;
#region Output Defines
private static string ImportLib = "raylib.dll";
private static string Namespace = "Raylib";
#endregion
// TODO:
// Defines
// Enums
// Other things like RLGL and stuff.
// Output generated code to actual directory.
// Organize Beef project.
public static void Main(string[] args)
{
string raylibjson = @"C:\Dev\raylib-beef\raylib-api\raylib.json";
API = JsonConvert.DeserializeObject<Root>(File.ReadAllText(raylibjson));
Console.WriteLine($"Generating files at {OutputDir}");
Console.WriteLine($"...");
RaylibBf();
for (int i = 0; i < API.Structs.Count; i++)
{
StructBf(API.Structs[i]);
}
Callbacks();
for (int i = 0; i < API.Enums.Count; i++)
{
Enum(API.Enums[i]);
}
Console.WriteLine("Successfully Generated Bindings!");
Console.ReadLine();
}
public static void Enum(Enum @enum)
{
OutputString.Clear();
OutputString = new();
UniversalHeader();
AppendLine($"/// {@enum.Description}");
AppendLine($"public enum {@enum.Name} : c_int");
AppendLine("{");
IncreaseTab();
for (int i = 0; i < @enum.Values.Count; i++)
{
AppendLine($"/// {@enum.Values[i].Description}");
AppendLine($"{@enum.Values[i].Name} = {@enum.Values[i].Value_},");
}
DecreaseTab();
AppendLine("}");
WriteToFile($@"Enums\{@enum.Name}");
}
public static void Callbacks()
{
OutputString.Clear();
OutputString = new();
UniversalHeader();
AppendLine($"static");
AppendLine("{");
IncreaseTab();
for (int i = 0; i < API.Callbacks.Count; i++)
{
var callback = API.Callbacks[i];
if (!string.IsNullOrEmpty(callback.Description)) AppendLine($"/// {callback.Description}");
AppendLine($"public function {callback.ReturnType.ConvertTypes()} {callback.Name.ConvertName()}({callback.Params.Parameters2String()});");
AppendLine("");
}
DecreaseTab();
AppendLine("}");
WriteToFile("Callbacks");
}
public static void StructBf(Struct structu)
{
OutputString.Clear();
OutputString = new();
UniversalHeader();
var alias = API.Aliases.FindAll(c => c.Type == structu.Name);
if (alias != null)
{
for (int i = 0; i < alias.Count; i++)
{
AppendLine($"typealias {alias[i].Name} = {alias[i].Type};");
}
if (alias.Count > 0) AppendLine("");
}
AppendLine($"[CRepr]");
AppendLine($"public struct {structu.Name}");
AppendLine("{");
IncreaseTab();
var constructorLine = "public this(";
for (int i = 0; i < structu.Fields.Count; i++)
{
var field = structu.Fields[i];
// This is like the only thing that is hardcoded, and that saddens me.
if (field.Type == "rAudioProcessor *" || field.Type == "rAudioBuffer *") continue;
AppendLine($"/// {field.Description}");
AppendLine($"public {field.Type.ConvertTypes()} {field.Name.ConvertName()};");
AppendLine("");
constructorLine += $"{field.Type.ConvertTypes()} {field.Name.ConvertName()}";
if (i < structu.Fields.Count - 1) constructorLine += ", ";
}
constructorLine += ")";
AppendLine(constructorLine);
AppendLine("{");
IncreaseTab();
for (int i = 0; i < structu.Fields.Count; i++)
{
var field = structu.Fields[i];
if (field.Type == "rAudioProcessor *" || field.Type == "rAudioBuffer *") continue;
AppendLine($"this.{field.Name.ConvertName()} = {field.Name.ConvertName()};");
}
DecreaseTab();
AppendLine("}");
DecreaseTab();
AppendLine("}");
WriteToFile($"{structu.Name}");
}
public static void RaylibBf()
{
OutputString.Clear();
OutputString = new();
UniversalHeader();
AppendLine("static");
AppendLine("{");
IncreaseTab();
AppendLine($"/// Used internally for bindings.");
AppendLine($"public const String RAYLIB_LIB = \"{ImportLib}\";");
AppendLine("");
// Skip first one, no value.
for (int i = 1; i < API.Defines.Count; i++)
{
var define = API.Defines[i];
if (define.Type == "UNKNOWN" || define.Type == "MACRO" || define.Type == "GUARD") continue;
if (!string.IsNullOrEmpty(define.Description)) AppendLine($"/// {define.Description}");
var defineType = define.Type.ConvertTypes();
AppendLine($"public const {defineType} {define.Name.ConvertName()} = {define.Value.ToString().ParseValue(defineType)};");
AppendLine("");
}
for (int i = 0; i < API.Functions.Count; i++)
{
var func = API.Functions[i];
AppendLine($"/// {func.Description}");
AppendLine($"[Import(RAYLIB_LIB), CallingConvention(.Cdecl), LinkName(\"{func.Name}\")]");
AppendLine($"public static extern {func.ReturnType.ConvertTypes()} {func.Name.ConvertName()}({Parameters2String(func.Params)});");
AppendLine("");
}
DecreaseTab();
AppendLine("}");
WriteToFile("Raylib");
}
public static string Parameters2String(this List<Param> @params)
{
var paramStr = string.Empty;
for (int p = 0; p < @params.Count; p++)
{
var param = @params[p];
var t = ConvertTypes(param.Type);
if (t == "...") { paramStr = paramStr[..^2]; continue; }; // Dunno what this is about, or how to convert it.
paramStr += $"{t} {param.Name.ConvertName()}";
if (p < @params.Count - 1)
paramStr += ", ";
}
return paramStr;
}
public static void UniversalHeader()
{
AppendLine("using System;");
AppendLine("using System.Interop;");
AppendLine("");
AppendLine($"namespace {Namespace};");
AppendLine("");
}
public static void WriteToFile(string name)
{
File.WriteAllText(OutputDir + name + ".bf", OutputString.ToString());
Console.WriteLine($"Generated {name}.bf");
}
public static string ParseValue(this string inputValue, string type)
{
if (inputValue.StartsWith("CLITERAL"))
{
inputValue = inputValue.Remove(0, 9);
inputValue = inputValue.Remove(type.Length, 1);
inputValue = inputValue.Remove(type.Length + 1, 1);
inputValue = inputValue.Remove(inputValue.Length - 2, 1);
inputValue = inputValue.Replace('{', '(');
inputValue = inputValue.Replace('}', ')');
}
else if (type == "String" || type == "char8*")
{
inputValue = $"\"{inputValue}\"";
}
else if (type == "float")
{
if (!inputValue.EndsWith(")"))
inputValue = inputValue + "f";
}
return inputValue;
}
/// <summary>
/// Converts the API types to Beef types.
/// </summary>
public static string ConvertTypes(this string input)
{
if (input == "unsigned char") return "uint8"; // idunno
input = ReplaceWholeWord(input, "char", "char8");
input = ReplaceWholeWord(input, "long", "int32");
input = ReplaceWholeWord(input, "va_list", "void*");
input = ReplaceWholeWord(input, "short", "uint16");
input = ReplaceWholeWord(input, "INT", "int");
input = ReplaceWholeWord(input, "STRING", "char8*");
input = ReplaceWholeWord(input, "FLOAT", "float");
input = ReplaceWholeWord(input, "FLOAT_MATH", "float");
input = ReplaceWholeWord(input, "COLOR", "Color");
if (input.StartsWith("const"))
input = input.Remove(0, 6);
if (input.StartsWith("unsigned"))
input = input.Remove(0, 9);
switch (input)
{
case "unsigned int":
return "c_uint";
default:
return input;
}
}
public static string ConvertName(this string input)
{
input = ReplaceWholeWord(input, "append", "@append");
input = ReplaceWholeWord(input, "box", "@box");
input = ReplaceWholeWord(input, "params", "@params");
return input;
}
public static string ReplaceWholeWord(this string original, string wordToFind, string replacement, RegexOptions regexOptions = RegexOptions.None)
{
string pattern = @$"\b{wordToFind}\b";
return Regex.Replace(original, pattern, replacement);
}
public static void AppendLine(string content)
{
var output = string.Empty;
for (int i = 0; i < TabIndex; i++)
{
output += " ";
}
output += content;
OutputString.AppendLine(output);
}
public static void IncreaseTab()
{
TabIndex++;
}
public static void DecreaseTab()
{
TabIndex--;
}
}
}