public void Parse(ref string[] program)
{
_Target = ParseUtils.PeekToken(program);
bool isFloatVar = ShaderScript.IsFloatVar(_Target);
bool isVectorVar = ShaderScript.IsVectorVar(_Target);
bool isNullFunc = ShaderScript.IsNullFunction(_Target);
if (!isFloatVar && !isVectorVar && !isNullFunc)
{
throw new ParseException("Expected \"" + _Target + "\" to be a float or vector variable or a non-return function");
}
if (isFloatVar || isVectorVar)
{
_Target = ParseUtils.GetToken(ref program);
_IsNull = false;
WooScript._Log.AddMsg("Found target variable \"" + _Target + "\"");
WooScript._Log.Indent();
_AssignOp = ParseUtils.GetToken(ref program);
if (!ShaderScript.IsAssignOp(_AssignOp))
{
throw new ParseException("Expected \"" + _AssignOp + "\" to be an assignment operation");
}
}
_Argument = ShaderScript.ParseExpression(ref program);
}
public static void ValidateFunction(ScriptElement func)
{
bool foundFunction = false;
bool validNumParams = false;
bool validTypeParams = false;
foreach (DistFunc df in _DistFunc)
{
if (df._Name.Equals(func._String, StringComparison.Ordinal))
{
foundFunction = true;
if (df._DistParams.Count == func._Arguments.Count)
{
validNumParams = true;
bool functionParamsValid = true;
for (int i = 0; i < df._DistParams.Count; i++)
{
if (df._DistParams.ElementAt(i)._Type != func._Arguments.ElementAt(i)._Type)
{
functionParamsValid = false;
}
}
if (functionParamsValid)
{
validTypeParams = true;
func._Type = df._ReturnType;
}
}
}
}
if (!foundFunction)
{
throw new ParseException("Missing distance function looking up \"" + func._String + "\"");
}
if (!validNumParams)
{
throw new ParseException("No matching version of function \"" + func._String + "\" found expecting " + func._Arguments.Count + " parameters");
}
if (!validTypeParams)
{
throw new ParseException("Type mismatch on args for function \"" + func._String + "\"");
}
}
public static ScriptElement ParseExpression(ref string[] program)
{
ScriptElement ret = new ScriptElement();
string token = ParseUtils.PeekToken(program);
ret._Reorderable = false;
if (token.Equals("-", StringComparison.Ordinal))
{
token = ParseUtils.GetToken(ref program);
token += ParseUtils.PeekToken(program);
}
if (token.Equals("(", StringComparison.Ordinal))
{
token = ParseUtils.GetToken(ref program);
ret = ParseExpression(ref program);
ret._Reorderable = false;
token = ParseUtils.GetToken(ref program);
if (!token.Equals(")", StringComparison.Ordinal))
{
throw new ParseException("Missing closebracket on bracketed expression, found" + token);
}
}
else if (IsFloatVar(token))
{
token = ParseUtils.GetToken(ref program);
ret._Type = SEType.FloatVar;
ret._String = token;
}
else if (IsVectorVar(token))
{
token = ParseUtils.GetToken(ref program);
ret._Type = SEType.VectorVar;
ret._String = token;
}
else if (IsFloatNum(token))
{
string chuck = ParseUtils.GetToken(ref program);
ret._Type = SEType.FloatVar;
ret._String = token;
}
else if (token.Equals("{"))
{
ret._Type = SEType.CodeBlock;
ret._Codeblock = new CodeBlock();
ret._Codeblock.Parse(ref program);
}
else if (token.IndexOf('.') > -1)
{
token = ParseUtils.GetToken(ref program);
int dotPosition = token.IndexOf('.');
ret._Type = SEType.VectorVar;
ret._String = token.Substring(0, dotPosition);
ScriptElement getter = new ScriptElement();
string index = token.Substring(dotPosition + 1);
if (index.Equals("x", StringComparison.Ordinal))
{
getter._String = "getx";
}
else if (index.Equals("y", StringComparison.Ordinal))
{
getter._String = "gety";
}
else if (index.Equals("z", StringComparison.Ordinal))
{
getter._String = "getz";
}
else
{
throw new ParseException("Invalid subindex " + index);
}
getter._Arguments.Add(ret);
getter._Type = SEType.FloatVar;
ret = getter;
}
else if (token.Equals("repeat", StringComparison.Ordinal))
{
token = ParseUtils.GetToken(ref program);
ret._String = token;
string openBracket = ParseUtils.PeekToken(program);
if (openBracket.Equals("(", StringComparison.Ordinal))
{
openBracket = ParseUtils.GetToken(ref program);
ret._Arguments.Add(ParseExpression(ref program));
string closeBracket = ParseUtils.GetToken(ref program);
if (!closeBracket.Equals(")", StringComparison.Ordinal))
{
throw new ParseException("Expected close bracket, found \"" + token + "\"");
}
}
else
{
throw new ParseException("repeat not followed by number, found \"" + token + "\", usage : repeat(x){}");
}
ret._Arguments.Add(ParseExpression(ref program));
}
else if (IsFunction(token))
{
token = ParseUtils.GetToken(ref program);
ret._String = token;
string openBracket = ParseUtils.PeekToken(program);
if (openBracket.Equals("(", StringComparison.Ordinal))
{
openBracket = ParseUtils.GetToken(ref program);
ret._Arguments.Add(ParseExpression(ref program));
string comma = ParseUtils.PeekToken(program);
while (comma.Equals(",", StringComparison.Ordinal))
{
comma = ParseUtils.GetToken(ref program);
ret._Arguments.Add(ParseExpression(ref program));
comma = ParseUtils.PeekToken(program);
}
string closeBracket = ParseUtils.GetToken(ref program);
if (!closeBracket.Equals(")", StringComparison.Ordinal))
{
throw new ParseException("Expected close bracket, found \"" + token + "\"");
}
}
ValidateFunction(ret);
}
else
{
throw new ParseException("Unrecognised token found \"" + token + "\"");
}
string opCode = ParseUtils.PeekToken(program);
if (IsOperator(opCode))
{
opCode = ParseUtils.GetToken(ref program);
ScriptElement opElement = new ScriptElement();
if (opCode.Equals("+", StringComparison.Ordinal))
{
opElement._String = "add";
}
if (opCode.Equals("-", StringComparison.Ordinal))
{
opElement._String = "sub";
}
if (opCode.Equals("*", StringComparison.Ordinal))
{
opElement._String = "mul";
}
if (opCode.Equals("/", StringComparison.Ordinal))
{
opElement._String = "div";
}
if (opCode.Equals("%", StringComparison.Ordinal))
{
opElement._String = "mod";
}
opElement._Type = ret._Type;
opElement._Arguments.Add(ret);
ScriptElement arg2 = ParseExpression(ref program);
opElement._Arguments.Add(arg2);
if (arg2._Reorderable)
{
if (GetPrecedence(opElement._String) < GetPrecedence(arg2._String))
{
ScriptElement Arg1Arg1 = ret;
ScriptElement Arg2Arg1 = arg2._Arguments.ElementAt(0);
ScriptElement Arg2Arg2 = arg2._Arguments.ElementAt(1);
arg2._Arguments.Clear();
arg2._Arguments.Add(opElement);
arg2._Arguments.Add(Arg2Arg2);
opElement._Arguments.Clear();
opElement._Arguments.Add(Arg1Arg1);
opElement._Arguments.Add(Arg2Arg1);
opElement = arg2;
}
}
ret = opElement;
ret._Reorderable = true;
ValidateFunction(opElement);
}
return(ret);
}
public void Parse(ref string[] program)
{
_Target = ParseUtils.PeekToken(program);
bool isFloatVar = ShaderScript.IsFloatVar(_Target);
bool isVectorVar = ShaderScript.IsVectorVar(_Target);
bool isNullFunc = ShaderScript.IsNullFunction(_Target);
if (!isFloatVar && !isVectorVar && !isNullFunc)
throw new ParseException("Expected \"" + _Target + "\" to be a float or vector variable or a non-return function");
if (isFloatVar || isVectorVar)
{
_Target = ParseUtils.GetToken(ref program);
_IsNull = false;
WooScript._Log.AddMsg("Found target variable \"" + _Target + "\"");
WooScript._Log.Indent();
_AssignOp = ParseUtils.GetToken(ref program);
if (!ShaderScript.IsAssignOp(_AssignOp))
throw new ParseException("Expected \"" + _AssignOp + "\" to be an assignment operation");
}
_Argument = ShaderScript.ParseExpression(ref program);
}
public static ScriptElement ParseExpression(ref string[] program)
{
ScriptElement ret = new ScriptElement();
string token = ParseUtils.PeekToken(program);
ret._Reorderable = false;
if (token.Equals("-", StringComparison.Ordinal))
{
token = ParseUtils.GetToken(ref program);
token += ParseUtils.PeekToken(program);
}
if (token.Equals("(", StringComparison.Ordinal))
{
token = ParseUtils.GetToken(ref program);
ret = ParseExpression(ref program);
ret._Reorderable = false;
token = ParseUtils.GetToken(ref program);
if (!token.Equals(")", StringComparison.Ordinal))
throw new ParseException("Missing closebracket on bracketed expression, found" + token);
}
else if (IsFloatVar(token))
{
token = ParseUtils.GetToken(ref program);
ret._Type = SEType.FloatVar;
ret._String = token;
}
else if (IsVectorVar(token))
{
token = ParseUtils.GetToken(ref program);
ret._Type = SEType.VectorVar;
ret._String = token;
}
else if (IsFloatNum(token))
{
string chuck = ParseUtils.GetToken(ref program);
ret._Type = SEType.FloatVar;
ret._String = token;
}
else if (token.Equals("{"))
{
ret._Type = SEType.CodeBlock;
ret._Codeblock = new CodeBlock();
ret._Codeblock.Parse(ref program);
}
else if (token.IndexOf('.') > -1)
{
token = ParseUtils.GetToken(ref program);
int dotPosition = token.IndexOf('.');
ret._Type = SEType.VectorVar;
ret._String = token.Substring(0, dotPosition);
ScriptElement getter = new ScriptElement();
string index = token.Substring(dotPosition + 1);
if (index.Equals("x", StringComparison.Ordinal))
getter._String = "getx";
else if (index.Equals("y", StringComparison.Ordinal))
getter._String = "gety";
else if (index.Equals("z", StringComparison.Ordinal))
getter._String = "getz";
else
throw new ParseException("Invalid subindex " + index);
getter._Arguments.Add(ret);
getter._Type = SEType.FloatVar;
ret = getter;
}
else if (token.Equals("repeat", StringComparison.Ordinal))
{
token = ParseUtils.GetToken(ref program);
ret._String = token;
string openBracket = ParseUtils.PeekToken(program);
if (openBracket.Equals("(", StringComparison.Ordinal))
{
openBracket = ParseUtils.GetToken(ref program);
ret._Arguments.Add(ParseExpression(ref program));
string closeBracket = ParseUtils.GetToken(ref program);
if (!closeBracket.Equals(")", StringComparison.Ordinal))
throw new ParseException("Expected close bracket, found \"" + token + "\"");
}
else
{
throw new ParseException("repeat not followed by number, found \"" + token + "\", usage : repeat(x){}");
}
ret._Arguments.Add(ParseExpression(ref program));
}
else if (IsFunction(token))
{
token = ParseUtils.GetToken(ref program);
ret._String = token;
string openBracket = ParseUtils.PeekToken(program);
if (openBracket.Equals("(", StringComparison.Ordinal))
{
openBracket = ParseUtils.GetToken(ref program);
ret._Arguments.Add(ParseExpression(ref program));
string comma = ParseUtils.PeekToken(program);
while (comma.Equals(",", StringComparison.Ordinal))
{
comma = ParseUtils.GetToken(ref program);
ret._Arguments.Add(ParseExpression(ref program));
comma = ParseUtils.PeekToken(program);
}
string closeBracket = ParseUtils.GetToken(ref program);
if (!closeBracket.Equals(")", StringComparison.Ordinal))
throw new ParseException("Expected close bracket, found \"" + token + "\"");
}
ValidateFunction(ret);
}
else
{
throw new ParseException("Unrecognised token found \"" + token + "\"");
}
string opCode = ParseUtils.PeekToken(program);
if (IsOperator(opCode))
{
opCode = ParseUtils.GetToken(ref program);
ScriptElement opElement = new ScriptElement();
if (opCode.Equals("+", StringComparison.Ordinal))
opElement._String = "add";
if (opCode.Equals("-", StringComparison.Ordinal))
opElement._String = "sub";
if (opCode.Equals("*", StringComparison.Ordinal))
opElement._String = "mul";
if (opCode.Equals("/", StringComparison.Ordinal))
opElement._String = "div";
if (opCode.Equals("%", StringComparison.Ordinal))
opElement._String = "mod";
opElement._Type = ret._Type;
opElement._Arguments.Add(ret);
ScriptElement arg2 = ParseExpression(ref program);
opElement._Arguments.Add(arg2);
if (arg2._Reorderable)
{
if (GetPrecedence(opElement._String) < GetPrecedence(arg2._String))
{
ScriptElement Arg1Arg1 = ret;
ScriptElement Arg2Arg1 = arg2._Arguments.ElementAt(0);
ScriptElement Arg2Arg2 = arg2._Arguments.ElementAt(1);
arg2._Arguments.Clear();
arg2._Arguments.Add(opElement);
arg2._Arguments.Add(Arg2Arg2);
opElement._Arguments.Clear();
opElement._Arguments.Add(Arg1Arg1);
opElement._Arguments.Add(Arg2Arg1);
opElement = arg2;
}
}
ret = opElement;
ret._Reorderable = true;
ValidateFunction(opElement);
}
return ret;
}
public static void ValidateFunction(ScriptElement func)
{
bool foundFunction = false;
bool validNumParams = false;
bool validTypeParams = false;
foreach (DistFunc df in _DistFunc)
{
if (df._Name.Equals(func._String, StringComparison.Ordinal))
{
foundFunction = true;
if (df._DistParams.Count == func._Arguments.Count)
{
validNumParams = true;
bool functionParamsValid = true;
for (int i = 0; i < df._DistParams.Count; i++)
{
if (df._DistParams.ElementAt(i)._Type != func._Arguments.ElementAt(i)._Type)
functionParamsValid = false;
}
if (functionParamsValid)
{
validTypeParams = true;
func._Type = df._ReturnType;
}
}
}
}
if (!foundFunction)
throw new ParseException("Missing distance function looking up \"" + func._String + "\"");
if (!validNumParams)
throw new ParseException("No matching version of function \"" + func._String + "\" found expecting " + func._Arguments.Count + " parameters");
if (!validTypeParams)
throw new ParseException("Type mismatch on args for function \"" + func._String + "\"");
}
