/// <summary>
/// Process the line of code for preprocessor conditions.
/// </summary>
/// <param name="code"></param>
/// <returns></returns>
public static PreprocessResults Process(string code)
{
var pos = 0;
var end = code.Length;
var lastword = string.Empty;
var result = new PreprocessResults();
result.Keys = new List <string>();
result.IsValid = true;
// Check 1: empty ?
if (string.IsNullOrEmpty(code))
{
result.IsValid = false;
result.Message = "Preprocessor directive is empty";
return(result);
}
while (pos < end)
{
var ch = code[pos];
if (char.IsLetter(ch))
{
lastword += ch;
}
else if (ch == ' ' || ch == '\t')
{
if (lastword != string.Empty)
{
if (lastword == "or")
{
result.IsAnd = false;
}
else if (lastword == "and")
{
result.IsAnd = true;
}
else
{
result.Keys.Add(lastword);
}
lastword = string.Empty;
}
}
pos++;
}
// Last one
if (!string.IsNullOrEmpty(lastword))
{
result.Keys.Add(lastword);
}
result.Count = result.Keys.Count;
// Check 2: any keys found?
if (result.Keys.Count == 0)
{
result.IsValid = false;
result.Message = "Preprocessor directive does not have any constants";
return(result);
}
// Check 3: are keys present
if (result.IsAnd)
{
result.IsTrue = true;
foreach (var key in result.Keys)
{
if (!Ctx.Directives.Contains(key))
{
result.IsTrue = false;
break;
}
}
}
else
{
foreach (var key in result.Keys)
{
if (Ctx.Directives.Contains(key))
{
result.IsTrue = true;
break;
}
}
}
return(result);
}
/// <summary>
/// Process the line of code for preprocessor conditions.
/// </summary>
/// <param name="code"></param>
/// <returns></returns>
public static PreprocessResults Process(string code)
{
var pos = 0;
var end = code.Length;
var lastword = string.Empty;
var result = new PreprocessResults();
result.Keys = new List<string>();
result.IsValid = true;
// Check 1: empty ?
if (string.IsNullOrEmpty(code))
{
result.IsValid = false;
result.Message = "Preprocessor directive is empty";
return result;
}
while (pos < end)
{
var ch = code[pos];
if (char.IsLetter(ch))
{
lastword += ch;
}
else if (ch == ' ' || ch == '\t')
{
if (lastword != string.Empty)
{
if (lastword == "or")
{
result.IsAnd = false;
}
else if (lastword == "and")
{
result.IsAnd = true;
}
else
{
result.Keys.Add(lastword);
}
lastword = string.Empty;
}
}
pos++;
}
// Last one
if (!string.IsNullOrEmpty(lastword))
result.Keys.Add(lastword);
result.Count = result.Keys.Count;
// Check 2: any keys found?
if (result.Keys.Count == 0)
{
result.IsValid = false;
result.Message = "Preprocessor directive does not have any constants";
return result;
}
// Check 3: are keys present
if (result.IsAnd)
{
result.IsTrue = true;
foreach (var key in result.Keys)
{
if (!Ctx.Directives.Contains(key))
{
result.IsTrue = false;
break;
}
}
}
else
{
foreach (var key in result.Keys)
{
if (Ctx.Directives.Contains(key))
{
result.IsTrue = true;
break;
}
}
}
return result;
}