public bool Parse(Accessibility accessibility, string str)
{
m_strSpec = str;
m_accessibility = accessibility;
// Create a scanner
StringScanner s = new StringScanner(str);
// Parse target spec
if (s.current != '.')
{
m_specTarget = new IdentifierSpec();
if (!m_specTarget.Parse(s))
return false;
}
// Parse member spec
if (s.current == '.')
{
s.SkipForward(1);
if (!s.eof)
{
// Parse rhs
m_specMember = new IdentifierSpec();
if (!m_specMember.Parse(s))
return false;
}
}
else
{
if (m_specTarget != null)
{
m_specNonMember = m_specTarget;
m_specTarget = null;
}
else
return false;
}
if (!s.eof)
return false;
return true;
}
public bool Parse(StringScanner s)
{
// Can't be empty
if (s.eof)
return false;
// Regex?
if (s.current == '/')
{
s.SkipForward(1);
s.Mark();
while (s.current != '/')
{
if (s.eof)
return false;
if (s.current == '\\')
s.SkipForward(2);
else
s.SkipForward(1);
}
try
{
m_regex = new System.Text.RegularExpressions.Regex(s.Extract());
s.SkipForward(1);
return true;
}
catch (Exception)
{
return false;
}
}
// Wildcard or explicit
bool bWildcard = false;
bool bLeading = true;
s.Mark();
while (!s.eof && s.current != '.')
{
// Wildcard?
if (s.current == '?' || s.current == '*')
{
bWildcard = true;
s.SkipForward(1);
bLeading=false;
continue;
}
// Valid identifier character?
if (bLeading)
{
if (!Tokenizer.IsIdentifierLeadChar(s.current))
return false;
}
else
{
if (!Tokenizer.IsIdentifierChar(s.current))
return false;
}
// Next
s.SkipForward(1);
bLeading = false;
}
// Extract it
string str = s.Extract();
// If it ends with an asterix, it's a wildcard
if (bWildcard)
{
str = str.Replace("*", "(.*)");
str = str.Replace("?", "(.)");
m_regex = new System.Text.RegularExpressions.Regex("^" + str + "$");
return true;
}
/// Store it
m_identifier = str;
return true;
}
public void OpenIncludeFile(string text, string fileName)
{
// Register the included file
Compiler.RegisterIncludedFile(fileName);
// Save the current string parser
m_IncludeStack.Push(p);
// Prep the string scanner
p = new StringScanner();
p.Reset(text);
p.FileName = fileName;
// Used to detect line breaks between tokens for automatic
// semicolon insertion
m_bPreceededByLineBreak = true;
m_prevTokenEnd = 0;
}
// Get the next token, skipping comments as we go
public Token Next()
{
m_prevToken = m_currentToken;
do
{
m_currentToken = ParseToken();
if (m_currentToken == Token.eof && m_IncludeStack.Count > 0)
{
// Pop include stack
p = m_IncludeStack.Pop();
m_prevTokenEnd = p.position;
return Next();
}
// Check for directive comments
if (m_currentToken == Token.comment)
{
if (m_strIdentifier.StartsWith("!"))
{
m_currentToken = Token.directive_comment;
break;
}
string str = m_strIdentifier.Trim();
if (str=="fall through")
{
m_currentToken=Token.kw_fallthrough;
break;
}
if (str == "warnings:on")
{
m_bWarnings = true;
}
if (str == "warnings:off")
{
m_bWarnings = false;
}
if (str == "warnings:push:on")
{
Compiler.WarningsEnabledStack.Push(m_bWarnings);
m_bWarnings = true;
}
if (str == "warnings:push:off")
{
Compiler.WarningsEnabledStack.Push(m_bWarnings);
m_bWarnings = false;
}
if (str == "warnings:pop")
{
if (Compiler.WarningsEnabledStack.Count > 0)
{
m_bWarnings = Compiler.WarningsEnabledStack.Pop();
}
else
{
m_bWarnings = true;
Compiler.RecordWarning(GetBookmark(), "can't pop warning state.");
}
}
if (str.StartsWith("private:"))
{
m_currentToken = Token.directive_private;
m_strIdentifier = str.Substring(8);
break;
}
if (str.StartsWith("public:"))
{
m_currentToken = Token.directive_public;
m_strIdentifier = str.Substring(7);
break;
}
if (str.StartsWith("include:"))
{
// Get file name
string strFile = str.Substring(8).Trim();
// Work out fully qualified name, relative to current file being processed
string strDir = System.IO.Path.GetDirectoryName(p.FileName);
string strOldDir = System.IO.Directory.GetCurrentDirectory();
System.IO.Directory.SetCurrentDirectory(strDir);
strFile = System.IO.Path.GetFullPath(strFile);
System.IO.Directory.SetCurrentDirectory(strOldDir);
// Open the include file
OpenIncludeFile(System.IO.File.ReadAllText(strFile), strFile);
// Recurse
return Next();
}
}
} while (m_currentToken == Token.comment);
m_prevTokenEnd = m_tokenEnd;
m_tokenEnd = p.position;
return m_currentToken;
}
// Constructor
public Tokenizer(Compiler Compiler, string str, string strFileName, bool bWarnings)
{
this.Compiler=Compiler;
// Prep the string scanner
p = new StringScanner();
p.Reset(str);
p.FileName = strFileName;
m_bWarnings = bWarnings;
// Used to detect line breaks between tokens for automatic
// semicolon insertion
m_bPreceededByLineBreak = true;
// Queue up the first token
m_prevToken = Token.eof;
Next();
}
public Bookmark(StringScanner file, int position, Token token, bool warnings)
{
this.file = file;
this.position = position;
this.token = token;
this.warnings = warnings;
}
public bool Parse(StringScanner s)
{
// Can't be empty
if (s.eof)
{
return(false);
}
// Regex?
if (s.current == '/')
{
s.SkipForward(1);
s.Mark();
while (s.current != '/')
{
if (s.eof)
{
return(false);
}
if (s.current == '\\')
{
s.SkipForward(2);
}
else
{
s.SkipForward(1);
}
}
try
{
m_regex = new System.Text.RegularExpressions.Regex(s.Extract());
s.SkipForward(1);
return(true);
}
catch (Exception)
{
return(false);
}
}
// Wildcard or explicit
bool bWildcard = false;
bool bLeading = true;
s.Mark();
while (!s.eof && s.current != '.')
{
// Wildcard?
if (s.current == '?' || s.current == '*')
{
bWildcard = true;
s.SkipForward(1);
bLeading = false;
continue;
}
// Valid identifier character?
if (bLeading)
{
if (!Tokenizer.IsIdentifierLeadChar(s.current))
{
return(false);
}
}
else
{
if (!Tokenizer.IsIdentifierChar(s.current))
{
return(false);
}
}
// Next
s.SkipForward(1);
bLeading = false;
}
// Extract it
string str = s.Extract();
// If it ends with an asterix, it's a wildcard
if (bWildcard)
{
str = str.Replace("*", "(.*)");
str = str.Replace("?", "(.)");
m_regex = new System.Text.RegularExpressions.Regex("^" + str + "$");
return(true);
}
/// Store it
m_identifier = str;
return(true);
}