// utility function to create a code segment for nested calls
public ByteCode Compile()
{
var e = new Emitter();
Emit(e);
return(e.GetCode());
}
// create code segment wrapped for fold
public ByteCode Compile(Symbol op, TypedValue seed, CallInfo callinfo)
{
var e = new Emitter();
e.Out(Opcodes.LDAGG, seed);
Emit(e);
e.OutCall(op, 0, callinfo);
return(e.GetCode());
}
// create code segment wrapped for fold and deffunc, called via Invoke
public ByteCode Compile(Symbol invop, string opname, TypedValue seed)
{
var e = new Emitter();
e.OutName(Opcodes.LDCATR, opname);
e.Out(Opcodes.LDACCBLK);
e.OutLoad(NumberValue.Create(-1));
e.Out(Opcodes.LDAGG, seed);
Emit(e);
e.OutCall(invop, 2); // no choice but two args
return(e.GetCode());
}
///============================================================================================
///
/// Emit and execute
///
ByteCode Emit(AstStatement statement)
{
Logger.Assert(statement.DataType != null);
Logger.WriteLine(4, "|{0}", statement); // nopad
var emitter = new Emitter();
statement.Emit(emitter);
if (statement.DataType.IsVariable)
{
//if (statement.DataType != DataTypes.Void) {
emitter.OutCall(Symbols.FindIdent("pp"));
emitter.OutCall(Symbols.FindIdent("write"));
}
// statement will have left value on stack (even if void)
if (!(statement is AstTypedef))
{
emitter.Out(Opcodes.EOS);
}
var code = emitter.GetCode();
return(code);
}
