public Instruction[] Assemble(string assemblyCode)
{
_symbolTable.Clear();
_bytes.Clear();
_currentLineNumber = 0;
foreach (string line in GetLines(assemblyCode))
{
_currentLineNumber += 1;
InstructionSyntax instructionSyntax = InstructionSyntax.Parse(line, _currentLineNumber);
if (!string.IsNullOrWhiteSpace(instructionSyntax.Label))
{
AddLabelToSymbolTable(instructionSyntax.Label);
}
if (!string.IsNullOrWhiteSpace(instructionSyntax.Mnemonic))
{
AssembleLine(instructionSyntax);
}
}
Instruction[] instructions = _bytes.ToInstructions(_symbolTable);
return(instructions);
}
private void AssembleLine(InstructionSyntax instructionSyntax)
{
switch (instructionSyntax.Mnemonic.ToLowerInvariant())
{
case "load":
Load(instructionSyntax.Operands);
break;
case "store":
Store(instructionSyntax.Operands);
break;
case "move":
Move(instructionSyntax.Operands);
break;
case "addi":
Addi(instructionSyntax.Operands);
break;
case "addf":
Addf(instructionSyntax.Operands);
break;
case "jmpeq":
JmpEQ(instructionSyntax.Operands);
break;
case "jmple":
JmpLE(instructionSyntax.Operands);
break;
case "jmp":
Jmp(instructionSyntax.Operands);
break;
case "and":
And(instructionSyntax.Operands);
break;
case "or":
Or(instructionSyntax.Operands);
break;
case "xor":
Xor(instructionSyntax.Operands);
break;
case "ror":
Ror(instructionSyntax.Operands);
break;
case "db":
DataByte(instructionSyntax.Operands);
break;
case "org":
Org(instructionSyntax.Operands);
break;
case "halt":
Halt(instructionSyntax.Operands);
break;
default:
throw new UnrecognizedMnemonicException(_currentLineNumber);
}
}