public override PsudoInstruction CopyTo(PsudoMethod newMethod)
{
CallMethodInstruction clone = new CallMethodInstruction(this.Line, newMethod, this.methodName);
clone.Arguments = this.Arguments;
return(clone);
}
private static PsudoInstruction RealCompileInstruction(string line, int lineNum, PsudoMethod method)
{
string args = "";
string variableRegex = VariableRegexString;
if (CheckSimpleCommand(line, "read", out args))
{
string[] vars = SplitVariableLiteralList(args);
return(new ReadInstruction(lineNum, method, vars));
}
else if (CheckSimpleCommand(line, "get", out args))
{
if (lastInstruction is PromptInstruction)
{
return(new NoOpInstruction(lineNum, method));
}
throw new Exception("Cannot use get without a prompt command");
}
else if (CheckSimpleCommand(line, "print", out args) ||
CheckSimpleCommand(line, "write", out args) ||
CheckSimpleCommand(line, "output", out args) ||
CheckSimpleCommand(line, "put", out args) ||
CheckSimpleCommand(line, "display", out args)
)
{
string[] vars = SplitVariableLiteralList(args);
return(new PrintInstruction(lineNum, method, vars));
}
else if (CheckSimpleCommand(line, "prompt", out args) ||
CheckSimpleCommand(line, "input", out args))
{
string withoutFor = args.Trim();
if (args.Trim().StartsWith("for"))
{
withoutFor = withoutFor.Substring(3).Trim();
}
string[] vars = SplitVariableLiteralList(withoutFor);
return(new PromptInstruction(lineNum, method, vars));
}
else if (CheckSimpleCommand(line, "add", out args))
{
string oper = "+";
// This should be in the format "add number to total"
Match number = Regex.Match(args,
@"^[\s]*\b" + variableRegex + @"\b[\s]+(?=([\s]*\b(to)\b[\s]*))",
RegexOptions.IgnoreCase);
Match total = Regex.Match(args,
@"(?<=([\s]*\b(to)\b[\s]*))\b" + variableRegex + @"\b[\s]*",
RegexOptions.IgnoreCase);
if (!number.Success || !total.Success)
{
throw new Exception("Invalid Operation Arguments on " + lineNum);
}
string expression = total.Value + oper + number.Value;
return(new MathmaticAssignmentInstruction(lineNum, method, total.Value.Trim(), expression));
}
else if (CheckSimpleCommand(line, "subtract", out args))
{
string oper = "-";
// This should be in the format "add number to total"
Match number = Regex.Match(args,
@"^[\s]*\b" + variableRegex + @"\b[\s](?=([\s]*\b(from)\b[\s]*))",
RegexOptions.IgnoreCase);
Match total = Regex.Match(args,
@"(?<=([\s]*\b(from)\b[\s]*))\b" + variableRegex + @"\b[\s]*",
RegexOptions.IgnoreCase);
if (!number.Success || !total.Success)
{
throw new Exception("Invalid Operation Arguments on " + lineNum);
}
string expression = total.Value + oper + number.Value;
return(new MathmaticAssignmentInstruction(lineNum, method, total.Value.Trim(), expression));
}
else if (CheckSimpleCommand(line, "multiply", out args))
{
string oper = "*";
// This should be in the format "add number to total"
Match total = Regex.Match(args,
@"^[\s]*\b" + variableRegex + @"\b[\s](?=([\s]*\b(by)\b[\s]*))",
RegexOptions.IgnoreCase);
Match number = Regex.Match(args,
@"(?<=([\s]*\b(by)\b[\s]*))\b" + variableRegex + @"\b[\s]*",
RegexOptions.IgnoreCase);
if (!number.Success || !total.Success)
{
throw new Exception("Invalid Operation Arguments on " + lineNum);
}
string expression = total.Value + oper + number.Value;
return(new MathmaticAssignmentInstruction(lineNum, method, total.Value.Trim(), expression));
}
else if (CheckSimpleCommand(line, "divide", out args))
{
string oper = "/";
// This should be in the format "add number to total"
Match total = Regex.Match(args,
@"^[\s]*\b" + variableRegex + @"\b[\s](?=([\s]*\b(by)\b[\s]*))",
RegexOptions.IgnoreCase);
Match number = Regex.Match(args,
@"(?<=([\s]*\b(by)\b[\s]*))\b" + variableRegex + @"\b[\s]*",
RegexOptions.IgnoreCase);
if (!number.Success || !total.Success)
{
throw new Exception("Invalid Operation Arguments on " + lineNum);
}
string expression = total.Value + oper + number.Value;
return(new MathmaticAssignmentInstruction(lineNum, method, total.Value.Trim(), expression));
}
else if (CheckSimpleCommand(line, "initialize", out args) ||
CheckSimpleCommand(line, "set", out args))
{
// This should be in the format "set number to total"
Match name = Regex.Match(args,
@"^[\s]*\b" + variableRegex + @"\b[\s](?=([\s]*\b(to)\b[\s]*))",
RegexOptions.IgnoreCase);
Match value = Regex.Match(args,
@"(?<=([\s]*to[\s]*))\b" + variableRegex + @"\b[\s]*",
RegexOptions.IgnoreCase);
if (!value.Success || !name.Success)
{
throw new Exception("Invalid Operation Arguments on " + lineNum);
}
return(new AssignVariable(lineNum, method, name.Value.Trim(), value.Value.Trim()));
}
// Simple Assignment Instructions
else if (
// check for normal assignment
Regex.IsMatch(line, @"^[\s]*" + variableRegex + @"[\s]*=[\s]*[$]*[a-zA-Z0-9._ ,]*[\s]*$", RegexOptions.IgnoreCase)
// check for string literals
|| Regex.IsMatch(line, @"^[\s]*" + variableRegex + @"[\s]*=[\s]*" + "[\\'\"]" + @"[a-zA-Z0-9_' -]*" + "[\\'\"]" + @"[\s]*$", RegexOptions.IgnoreCase)
)
{
Match name = Regex.Match(line,
@"^[\s]*" + variableRegex + @"[\s]*=",
RegexOptions.IgnoreCase);
Match value = Regex.Match(line,
@"(?<=(=[\s]))*[$]*[a-zA-Z0-9._," + '"' + @"' -]*[\s]*$",
RegexOptions.IgnoreCase);
// This is a simple assignment to either a variable or literal
return(new AssignVariable(lineNum, method, name.Value.Trim('=').Trim(), value.Value.Trim()));
}
// Mathmatic assignment
else if (Regex.IsMatch(line, @"^[\s]*" + variableRegex + @"[\s]*=[\s]*[a-zA-Z0-9.()\s" + "\"" + @"_+-/*,]*[\s]*$", RegexOptions.IgnoreCase))
{
Match name = Regex.Match(line,
@"^[\s]*" + variableRegex + @"[\s]",
RegexOptions.IgnoreCase);
Match value = Regex.Match(line,
@"(?<=(=[\s]))*[a-zA-Z0-9._ ()" + "\"" + @"+-/*,]*[\s]*$",
RegexOptions.IgnoreCase);
// This is a simple assignment to either a variable or literal
return(new MathmaticAssignmentInstruction(lineNum, method, name.Value.Trim(), value.Value.Trim()));
}
// Simple Call Method
else if (Regex.IsMatch(line, @"^[\s]*[\s]*[a-zA-Z0-9_]*[\s]*$", RegexOptions.IgnoreCase))
{
string name = line.Trim();
CallMethodInstruction ins = new CallMethodInstruction(lineNum, method, name.Trim());
return(ins);
}
throw new Exception(string.Format(
"Invalid Instruction in Method \"{0}\"",
method.Name));
}
