public static void Start()
{
if (flag.EngineType == flag.engineType.eval)
{
_evalRepl();
return; // unreachable
}
List <Object> constants = new List <Object>();
List <Object> globals = new List <Object>(new Object[VM.GlobalSize]);
symbol_table.SymbolTable symbolTable = symbol_table.NewSymbolTable();
for (int i = 0; i < builtins.Builtins.Length; i++)
{
_BuiltinDefinition v = builtins.Builtins[i];
symbol_table.DefineBuiltin(ref symbolTable, i, v.Name);
}
for (;;)
{
System.Console.Write(PROMPT);
string line = System.Console.ReadLine();
Lexer l = Lexer.New(line);
Parser p = Parser.New(l);
ast.Program program = p.ParseProgram();
if (Parser.Errors().Count != 0)
{
printParserErrors(Parser.Errors());
continue;
}
Compiler_t comp = Compiler.NewWithState(ref symbolTable, constants);
Compiler._SetCompiler(ref comp); // work around
error err = Compiler.Compile(program);
if (err != null)
{
System.Console.WriteLine("Woops! Compilation failed:\n {0}", err);
continue;
}
Bytecode code = Compiler.Bytecode();
constants = code.Constants;
VM_t machine = VM.NewWithGlobalStore(code, ref globals);
VM._SetVM(ref machine); // work around
err = VM.Run();
if (err != null)
{
System.Console.WriteLine("Woops! Executing bytecode failed:\n {0}", err);
continue;
}
Object lastPopped = VM.LastPoppedStackElem();
System.Console.Write(lastPopped.Inspect());
System.Console.WriteLine();
}
}
public static void Start()
{
List <Object> constants = new List <Object>();
List <Object> globals = new List <Object>(new Object[VM.GlobalSize]);
symbol_table.SymbolTable symbolTable = symbol_table.NewSymbolTable();
for (int i = 0; i < builtins.Builtins.Length; i++)
{
_BuiltinDefinition v = builtins.Builtins[i];
symbol_table.DefineBuiltin(ref symbolTable, i, v.Name);
}
for (;;)
{
System.Console.Write(PROMPT);
string line = System.Console.ReadLine();
Lexer l = Lexer.New(line);
Compiler.InitParser(l);
Compiler.NewWithState(ref symbolTable, constants);
error err = Compiler.CompileProgram();
if (Compiler.ParseErrors().Count != 0) // parse errors
{
printParserErrors(Compiler.ParseErrors());
continue;
}
if (err != null)
{
System.Console.WriteLine("Woops! Compilation failed:\n {0}", err);
continue;
}
Bytecode code = Compiler.Bytecode();
constants = code.Constants;
if (code.Instructions.Count == 0) // nothing compiled
{
continue;
}
VM.NewWithGlobalStore(code, ref globals);
err = VM.Run();
if (err != null)
{
System.Console.WriteLine("Woops! Executing bytecode failed:\n {0}", err);
continue;
}
if (VM.ExitVM)
{
return;
}
Object lastPopped = VM.LastPoppedStackElem();
System.Console.Write(lastPopped.Inspect());
System.Console.WriteLine();
}
}
