public ValueString(string code, Dictionary <string, float> variables)
{
values = new List <float> ();
elements = new List <ExpressionElement> ();
string[] sections = code.Split(' ');
for (int i = 0; i < sections.Length; i++)
{
string section = sections[i];
// Check for built-in functions (sqrt, abs) etc
if (VirtualCompiler.ArrayContainsString(VirtualCompiler.builtinFunctions, section))
{
switch (section)
{
case "sqrt":
elements.Add(ExpressionElement.SqrtFunc);
break;
case "abs":
elements.Add(ExpressionElement.AbsFunc);
break;
case "sign":
elements.Add(ExpressionElement.SignFunc);
break;
case "sin":
elements.Add(ExpressionElement.SinFunc);
break;
case "cos":
elements.Add(ExpressionElement.CosFunc);
break;
case "tan":
elements.Add(ExpressionElement.TanFunc);
break;
case "asin":
elements.Add(ExpressionElement.AsinFunc);
break;
case "acos":
elements.Add(ExpressionElement.AcosFunc);
break;
case "atan":
elements.Add(ExpressionElement.AtanFunc);
break;
}
}
// Check for math operators (+, -) etc
else if (VirtualCompiler.ArrayContainsString(VirtualCompiler.mathOperators, section) || section == "(" || section == ")")
{
switch (section)
{
case "+":
elements.Add(ExpressionElement.Plus);
break;
case "-":
elements.Add(ExpressionElement.Minus);
break;
case "*":
elements.Add(ExpressionElement.Multiply);
break;
case "/":
elements.Add(ExpressionElement.Divide);
break;
case "(":
elements.Add(ExpressionElement.StartGroup);
break;
case ")":
elements.Add(ExpressionElement.EndGroup);
break;
}
}
// Try get value from variable name
else if (variables.ContainsKey(section))
{
values.Add(variables[section]);
elements.Add(ExpressionElement.Value);
}
// Try get value from variable array
else if (section.Contains("[") && section.Contains("]"))
{
string indexString = VirtualCompiler.Substring(section, section.IndexOf("[") + 1, section.IndexOf("]"));
var indexValueString = new ValueString(CompilerFormatter.Format(indexString), variables);
int index = (int)new NumericalExpression(indexValueString).Evaluate();
string varName = section.Substring(0, section.IndexOf("[")) + VirtualCompiler.arrayIndexSeperator + index;
if (variables.ContainsKey(varName))
{
elements.Add(ExpressionElement.Value);
values.Add(variables[varName]);
}
}
// Try parse value string to float
else
{
float value;
if (float.TryParse(section.Replace(".", ","), out value))
{
values.Add(value);
elements.Add(ExpressionElement.Value);
}
}
}
}
/// Format string such that all values/variables/operators are separated by a single space
/// e.g. "x+7 *(3+y) <= -10" should be formatted as "x + 7 * ( 3 + y ) <= - 10"
/// Note that compound operators (<= and >= and ==) should be treated as a single symbol
/// Note also that anything inside array index should not be formatted: x[3*2+7] for example should be left as is
public static string Format(string line)
{
line = line.Trim();
var sections = new List <string> ();
string substring = "";
bool lastWasOperator = false;
bool inArrayIndexer = false;
for (int i = 0; i < line.Length; i++)
{
char currentChar = line[i];
bool isOperator = VirtualCompiler.allOperators.Contains(currentChar.ToString());
if (currentChar == '[')
{
inArrayIndexer = true;
}
else if (currentChar == ']')
{
inArrayIndexer = false;
}
if ((currentChar == spaceChar || isOperator || lastWasOperator) && !inArrayIndexer)
{
if (!string.IsNullOrEmpty(substring))
{
sections.Add(substring);
}
substring = "";
}
if (isOperator || currentChar != spaceChar)
{
substring += currentChar;
}
if (i == line.Length - 1)
{
if (!string.IsNullOrEmpty(substring))
{
sections.Add(substring);
}
}
lastWasOperator = isOperator;
}
string formattedLine = "";
string lastAddedSection = "";
for (int i = 0; i < sections.Count; i++)
{
// Remove previous space if compound operator
string compound = lastAddedSection + sections[i];
if (VirtualCompiler.ArrayContainsString(VirtualCompiler.compoundOperators, compound))
{
formattedLine = formattedLine.Substring(0, formattedLine.Length - 1);
}
formattedLine += sections[i];
if (i != sections.Count - 1)
{
formattedLine += spaceChar;
}
lastAddedSection = sections[i];
}
return(formattedLine);
}
static string HighlightLine(string line, SyntaxTheme theme)
{
var cols = new List <Color> ();
var startEndIndices = new List <Vector2Int> ();
string[] sections = CompilerFormatter.Format(line).Split(' ');
int nonSpaceIndex = 0;
bool isComment = false;
for (int i = 0; i < sections.Length; i++)
{
Color colour = Color.clear;
string section = sections[i];
if (section == VirtualCompiler.commentMarker || isComment)
{
colour = theme.comment;
isComment = true;
}
else if (section == "if" || section == "elseif" || section == "else")
{
colour = theme.conditionKeyword;
}
else if (section == "loop")
{
colour = theme.loopKeyword;
}
else if (VirtualCompiler.ArrayContainsString(VirtualCompiler.mathOperators, section))
{
colour = theme.mathOperator;
}
else if (VirtualCompiler.ArrayContainsString(VirtualCompiler.comparisonOperators, section))
{
colour = theme.comparisonOperator;
}
else if (section == "(" || section == ")")
{
colour = theme.parentheses;
}
else if (section == "{" || section == "}")
{
colour = theme.curlyBrackets;
}
else if (float.TryParse(section.Replace('.', ','), out _))
{
colour = theme.value;
}
else if (section == "=")
{
colour = theme.assignment;
}
else
{
colour = theme.variable;
}
if (colour != Color.clear)
{
cols.Add(colour);
int endIndex = nonSpaceIndex + sections[i].Length;
startEndIndices.Add(new Vector2Int(nonSpaceIndex, endIndex));
}
nonSpaceIndex += sections[i].Length;
}
if (cols.Count > 0)
{
nonSpaceIndex = 0;
int colIndex = 0;
int actualStartIndex = -1;
for (int i = 0; i <= line.Length; i++)
{
if (startEndIndices[colIndex].x == nonSpaceIndex)
{
actualStartIndex = i;
}
else if (startEndIndices[colIndex].y == nonSpaceIndex)
{
//print (colIndex + " replace: " + startEndIndices[colIndex] +" with: " + new Vector2Int (actualStartIndex, i));
startEndIndices[colIndex] = new Vector2Int(actualStartIndex, i);
colIndex++;
if (colIndex >= cols.Count)
{
break;
}
i--;
continue;
}
if (i < line.Length)
{
char c = line[i];
if (c != ' ')
{
nonSpaceIndex++;
}
}
}
}
for (int i = cols.Count - 1; i >= 0; i--)
{
var col = cols[i];
var startEndIndex = startEndIndices[i];
string colString = ColorUtility.ToHtmlStringRGB(col);
line = line.Insert(startEndIndex.y, "</color>");
line = line.Insert(startEndIndex.x, $"<color=#{colString}>");
//print ("insert: " + startEndIndex.x + " " + startEndIndex.y);
}
return(line);
}
