public Expressions Parse(string sourceText) //API entry point
{
ResetParserState();
sourceText += '\0'; //TOOD: figure out how newline is interpreted in a c# string
m_Lexer.Lex(sourceText, Lexer.Lexer.IncludeWhiteSpaceTokens.No, Lexer.Lexer.IncludeEofToken.Yes);
m_tokenList = m_Lexer.GetTokens();
if (m_Lexer.m_Diagnostics.Count > 0)
{
foreach (var errorMessage in m_Lexer.m_Diagnostics)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Lexer: " + errorMessage);
Console.ResetColor();
}
return(null);
}
switch (Peek().TokenType)
{
//ParseStatement,....
default:
return(ParseExpression());
}
}
public void Compile()
{
lexer.GetText();
try
{
lexer.StartLexer();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
//throw;
return;
}
parser = new Parser(lexer.GetTokens(), lexer.GetScriptName());
Root root;
try
{
root = parser.ParseProgram();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
//throw;
return;
}
foreach (var decl in root.Decls.Where(decl => decl.ReturnName().Value.ToString().ToLower() == "main" && decl.getParams().Count == 0))
{
mainFound = true;
}
if (!mainFound)
{
Console.WriteLine($"{lexer.GetScriptName()}:{lexer.GetTokens().Last().LineN}: error: function main must exist and have zero parameters");
return;
}
var printer = new AstPrinter();
//printer.Print("root", root);
var rootScope = new Scope(null, lexer.GetScriptName());
try
{
root.ResolveNames(rootScope);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
GlobalVars.running = false;
//throw;
}
try
{
root.CheckTypes();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
//throw;
}
if (!GlobalVars.running)
{
return;
}
PushInstructions();
var writer = new CodeWriter();
try
{
root.GenCode(writer);
writer.DumpCode();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
//throw;
return;
}
var interpreter = new Interpreter.Interpreter(writer.Code, CodeWriter.StringStorage);
try
{
interpreter.Exec();
}
catch (Exception e)
{
/*if (e is System.FormatException)
* {
* //Console.WriteLine($"{GlobalVars.FileName}:{}:Error :Input was not an integer");
* //throw;
* return;
* }*/
Console.WriteLine(e.Message);
//throw;
}
}