/// <summary>
/// Checks whether macros in the given source file are matched
/// </summary>
/// <param name="SourceFile"></param>
/// <param name="IdentifierToIndex">Map of macro identifier to bit index. The complement of an index is used to indicate the end of the pair.</param>
/// <param name="LogLock">Object used to marshal access to the global log instance</param>
void CheckSourceFile(FileReference SourceFile, Dictionary <string, int> IdentifierToIndex, object LogLock)
{
// Read the text
string Text = FileReference.ReadAllText(SourceFile);
// Scan through the file token by token. Each bit in the Flags array indicates an index into the MacroPairs array that is currently active.
int Flags = 0;
for (int Idx = 0; Idx < Text.Length;)
{
int StartIdx = Idx++;
if ((Text[StartIdx] >= 'a' && Text[StartIdx] <= 'z') || (Text[StartIdx] >= 'A' && Text[StartIdx] <= 'Z') || Text[StartIdx] == '_')
{
// Identifier
while (Idx < Text.Length && ((Text[Idx] >= 'a' && Text[Idx] <= 'z') || (Text[Idx] >= 'A' && Text[Idx] <= 'Z') || (Text[Idx] >= '0' && Text[Idx] <= '9') || Text[Idx] == '_'))
{
Idx++;
}
// Extract the identifier
string Identifier = Text.Substring(StartIdx, Idx - StartIdx);
// Find the matching flag
int Index;
if (IdentifierToIndex.TryGetValue(Identifier, out Index))
{
if (Index >= 0)
{
// Set the flag (should not already be set)
int Flag = 1 << Index;
if ((Flags & Flag) != 0)
{
Tools.DotNETCommon.Log.TraceWarning(SourceFile, GetLineNumber(Text, StartIdx), "{0} macro appears a second time without matching {1} macro", Identifier, MacroPairs[Index, 1]);
}
Flags |= Flag;
}
else
{
// Clear the flag (should already be set)
int Flag = 1 << ~Index;
if ((Flags & Flag) == 0)
{
Tools.DotNETCommon.Log.TraceWarning(SourceFile, GetLineNumber(Text, StartIdx), "{0} macro appears without matching {1} macro", Identifier, MacroPairs[~Index, 0]);
}
Flags &= ~Flag;
}
}
}
else if (Text[StartIdx] == '/' && Idx < Text.Length)
{
if (Text[Idx] == '/')
{
// Single-line comment
while (Idx < Text.Length && Text[Idx] != '\n')
{
Idx++;
}
}
else if (Text[Idx] == '*')
{
// Multi-line comment
Idx++;
for (; Idx < Text.Length; Idx++)
{
if (Idx + 2 < Text.Length && Text[Idx] == '*' && Text[Idx + 1] == '/')
{
Idx += 2;
break;
}
}
}
}
else if (Text[StartIdx] == '"' || Text[StartIdx] == '\'')
{
// String
for (; Idx < Text.Length; Idx++)
{
if (Text[Idx] == Text[StartIdx])
{
Idx++;
break;
}
if (Text[Idx] == '\\')
{
Idx++;
}
}
}
else if (Text[StartIdx] == '#')
{
// Preprocessor directive (eg. #define)
for (; Idx < Text.Length && Text[Idx] != '\n'; Idx++)
{
if (Text[Idx] == '\\')
{
Idx++;
}
}
}
}
// Check if there's anything left over
if (Flags != 0)
{
for (int Idx = 0; Idx < MacroPairs.GetLength(0); Idx++)
{
if ((Flags & (1 << Idx)) != 0)
{
Tools.DotNETCommon.Log.TraceWarning(SourceFile, "{0} macro does not have matching {1} macro", MacroPairs[Idx, 0], MacroPairs[Idx, 1]);
}
}
}
}