private void Parse()
{
string[] components = SourceAsm.Split((char[])null, StringSplitOptions.RemoveEmptyEntries);
if (components.Length == 0 || components.Length > 3)
{
throw new Exception(String.Format("ERROR: Line {0} : Too many arguments", LineNumber));
}
// Parse the op code and 2 params
Instruction = new Instruction(LineNumber, components[0]);
// If params are passed a null string to parse they will default to 'unused' type and value of zero
string lParam = (components.Length >= 2) ? components[1] : null;
string rParam = (components.Length == 3) ? components[2] : null;
// Bit of a hack for jump instructions
// JMP has one param but the parm has to be forced into the 8 bit rparam
if (Instruction._OpCode == OpCode.JMP ||
Instruction._OpCode == OpCode.JE ||
Instruction._OpCode == OpCode.JNE ||
Instruction._OpCode == OpCode.JZ ||
Instruction._OpCode == OpCode.JNZ ||
Instruction._OpCode == OpCode.CMP)
{
rParam = lParam;
lParam = null;
}
LeftParam = new InstructionParameter(LineNumber, lParam);
RightParam = new InstructionParameter(LineNumber, rParam);
Validate();
}
