public JumpCommand(AsmInterpreter interpreter, string[] lineParts)
: base(interpreter, lineParts)
{
string comparisonName = lineParts[0];
string labelName;
if (comparisonName == "jmp")
{
comp = GetComparisonDelegation(comparisonName);
labelName = lineParts[1];
}
else
{
string operandLeftName = lineParts[1];
string operandRightName = lineParts[2];
labelName = lineParts[3];
ComparisonDelegation delegation = GetComparisonDelegation(comparisonName);
if (delegation == null)
throw new InvalidOperationException("Invalid comparison operator.");
comp = delegation;
ValueStorage vs = null;
vs = parent.GetVariableByName(operandLeftName);
if (vs == null)
{
vs = parent.GetRegisterByName(operandLeftName);
if (vs == null)
{
vs = parent.GetStackValueFromTop(operandLeftName);
if (vs == null)
{
float number = 0.0f;
if (float.TryParse(operandLeftName, out number))
{
vs = new ValueStorage();
vs.SetValue(number);
parent.m_constants.Add(vs);
}
}
}
}
if (vs == null)
throw new InvalidOperationException("Invalid comparison left operand.");
operandLeft = vs;
vs = null;
vs = parent.GetVariableByName(operandRightName);
if (vs == null)
{
vs = parent.GetRegisterByName(operandRightName);
if (vs == null)
{
vs = parent.GetStackValueFromTop(operandRightName);
if (vs == null)
{
float number = 0.0f;
if (float.TryParse(operandRightName, out number))
{
vs = new ValueStorage();
vs.SetValue(number);
parent.m_constants.Add(vs);
}
}
}
}
if (vs == null)
throw new InvalidOperationException("Invalid comparison right operand.");
operandRight = vs;
}
JumpLabel label = parent.GetJumpLabelByName(labelName);
if (label == null)
throw new InvalidOperationException("Invalid jump target.");
target = label;
}
public void LoadString(string codeStr)
{
Clear();
string[] lines = codeStr.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
// First remove all comments.
bool inCommentBody = false;
for(int i = 0; i < lines.Length; i++)
{
if (inCommentBody == false)
{
int commentStartIdx = lines[i].IndexOf("/*");
int commentLineIdx = lines[i].IndexOf("//");
if (commentStartIdx >= 0 && commentLineIdx >= 0)
{
if (commentStartIdx > commentLineIdx)
{
// The line is commented.
lines[i] = lines[i].Substring(0, commentLineIdx);
}
else
{
// The comment body starts.
lines[i] = lines[i].Substring(0, commentStartIdx);
inCommentBody = true;
i--;
}
}
else
{
if (commentStartIdx >= 0)
{
// The comment body start exists.
lines[i] = lines[i].Substring(0, commentStartIdx);
inCommentBody = true;
i--;
}
else if (commentLineIdx >= 0)
{
// The comment line exists.
lines[i] = lines[i].Substring(0, commentLineIdx);
}
}
}
else
{
// In comment body. Only focus on comment end.
if (lines[i].Contains("*/"))
{
lines[i] = lines[i].Substring(lines[i].IndexOf("*/") + 2);
inCommentBody = false;
i--;
}
else
{
lines[i] = "";
}
}
}
// Second pick all labels.
int lineIndex = 0;
List<string> codeLines = new List<string>();
foreach (string line in lines)
{
if (line.EndsWith(":"))
{
JumpLabel newLabel = new JumpLabel();
newLabel.instructionIndexOfNextLine = lineIndex;
newLabel.labelName = line.Substring(0, line.Length - 1).TrimStart(' ', '\t');
m_labels.Add(newLabel);
}
else
{
if (line.Trim() == "")
continue;
lineIndex++;
codeLines.Add(line.TrimStart(' ', '\t').TrimEnd(' ', '\t'));
}
}
// Now analyze all code lines.
lineIndex = 0;
foreach(string codeLine in codeLines)
{
string[] lineParts = codeLine.Split(new char[]{' '}, StringSplitOptions.RemoveEmptyEntries);
if (lineParts[0].Equals("var", StringComparison.CurrentCultureIgnoreCase))
{
string name = lineParts[1];
if (m_namedVariables.Exists((NamedValueStorage nvs) => { return nvs.name == name; }) == false)
{
float value = 0.0f;
if (lineParts.Length == 4 && lineParts[2] == "=")
{
value = Convert.ToSingle(lineParts[3]);
}
NamedValueStorage newNamedValueStorage = new NamedValueStorage(name, value);
m_namedVariables.Add(newNamedValueStorage);
}
NoOperationCommand newCmd = new NoOperationCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if(lineParts[0].Equals("mov", StringComparison.CurrentCultureIgnoreCase))
{
AssignmentCommand newCmd = new AssignmentCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts.Length == 3 && lineParts[1].Equals("=", StringComparison.CurrentCultureIgnoreCase))
{
AssignmentCommand newCmd = new AssignmentCommand(this, new string[] { "mov", lineParts[0], lineParts[2] });
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("add", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts.Length == 3 && lineParts[1].Equals("+=", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, new string[] { "add", lineParts[0], lineParts[2] });
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("sub", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts.Length == 3 && lineParts[1].Equals("-=", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, new string[] { "sub", lineParts[0], lineParts[2] });
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("mul", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts.Length == 3 && lineParts[1].Equals("*=", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, new string[] { "mul", lineParts[0], lineParts[2] });
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("div", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts.Length == 3 && lineParts[1].Equals("/=", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, new string[] { "div", lineParts[0], lineParts[2] });
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("mod", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts.Length == 3 && lineParts[1].Equals("%=", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, new string[] { "mod", lineParts[0], lineParts[2] });
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("pow", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts.Length == 3 && lineParts[1].Equals("^=", StringComparison.CurrentCultureIgnoreCase))
{
CalculationCommand newCmd = new CalculationCommand(this, new string[] { "pow", lineParts[0], lineParts[2] });
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("jmp", StringComparison.CurrentCultureIgnoreCase))
{
JumpCommand newCmd = new JumpCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("je", StringComparison.CurrentCultureIgnoreCase))
{
JumpCommand newCmd = new JumpCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("jne", StringComparison.CurrentCultureIgnoreCase))
{
JumpCommand newCmd = new JumpCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("jb", StringComparison.CurrentCultureIgnoreCase))
{
JumpCommand newCmd = new JumpCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("jl", StringComparison.CurrentCultureIgnoreCase))
{
JumpCommand newCmd = new JumpCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("jbe", StringComparison.CurrentCultureIgnoreCase))
{
JumpCommand newCmd = new JumpCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("jle", StringComparison.CurrentCultureIgnoreCase))
{
JumpCommand newCmd = new JumpCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("if", StringComparison.CurrentCultureIgnoreCase))
{
int correspondingNode = FindCorrespondingEndNode(codeLines, lineIndex);
if (correspondingNode == -1)
throw new InvalidOperationException("Invalid if block.");
IfCommand newCmd = new IfCommand(this, lineParts);
newCmd.targetInstructionIndex = correspondingNode;
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("else", StringComparison.CurrentCultureIgnoreCase))
{
NoOperationCommand newCmd = new NoOperationCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("while", StringComparison.CurrentCultureIgnoreCase))
{
int correspondingNode = FindCorrespondingEndNode(codeLines, lineIndex);
if (correspondingNode == -1)
throw new InvalidOperationException("Invalid while block.");
IfCommand newCmd = new IfCommand(this, lineParts);
newCmd.targetInstructionIndex = correspondingNode + 1;
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("end", StringComparison.CurrentCultureIgnoreCase))
{
string startNodeType = "";
int correspondingNode = FindCorrespondingStartNode(codeLines, lineIndex, out startNodeType);
if (correspondingNode == -1)
throw new InvalidOperationException("Invalid end block.");
if (startNodeType == "if")
{
EndCommand newCmd = new EndCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (startNodeType == "while")
{
EndCommand newCmd = new EndCommand(this, lineParts);
newCmd.loopInstructionIndex = correspondingNode;
m_commands.Add(newCmd);
}
}
else if (lineParts[0].Equals("push", StringComparison.CurrentCultureIgnoreCase))
{
PushCommand newCmd = new PushCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("pop", StringComparison.CurrentCultureIgnoreCase))
{
PopCommand newCmd = new PopCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("yield", StringComparison.CurrentCultureIgnoreCase))
{
YieldCommand newCmd = new YieldCommand(this, lineParts);
m_commands.Add(newCmd);
}
else if (lineParts[0].Equals("nop", StringComparison.CurrentCultureIgnoreCase))
{
NoOperationCommand newCmd = new NoOperationCommand(this, lineParts);
m_commands.Add(newCmd);
}
//else if (lineParts[0].Equals("trig", StringComparison.CurrentCultureIgnoreCase))
//{
// // Need to implement this later.
// NoOperationCommand newCmd = new NoOperationCommand(this, lineParts);
// m_commands.Add(newCmd);
//}
else
{
if (UserCommandModuleHandler.HandleUserCommand(this, codeLines, lineIndex, lineParts) == false)
{
throw new InvalidOperationException("Unknown command.");
}
}
lineIndex++;
}
}
