/*identifier_or_keyword
{
CSharp3Fast parent_;
internal _identifier_or_keyword(CSharp3Fast parent)
{
parent_ = parent;
}
bool TryGetUnicodeFromHexString(out char uniCodeChar,out int readLength)
{
System.Diagnostics.Debug.Assert(parent_.src_[parent_.pos_] == '\\');
uniCodeChar='\0';
readLength=0;
string hexString;
if (parent_.src_[parent_.pos_ + 1] == 'u' && parent_.pos_ + 5 < parent_.srcLen_)
{
hexString = parent_.src_.Substring(parent_.pos_ + 2, 4);
readLength=6;
}
else if (parent_.src_[parent_.pos_ + 1] == 'U' && parent_.pos_ + 9 < parent_.srcLen_)
{
hexString = parent_.src_.Substring(parent_.pos_ + 2, 8);
readLength=10;
}
else return false;
try
{
uint val = UInt32.Parse(hexString, System.Globalization.NumberStyles.HexNumber);
uniCodeChar = (char)val;
return (val & 0xFFFF0000) == 0;
}
catch (Exception) { return false; }
}
bool UnicodeEscapeIsLetter()
{
System.Diagnostics.Debug.Assert(parent_.src_[parent_.pos_] == '\\');
char uniCodeChar;
int readLength;
if (!TryGetUnicodeFromHexString(out uniCodeChar, out readLength)) return false;
if (UnicodeIsLetter(uniCodeChar))
{
parent_.pos_+= readLength;
return true;
}
return false;
}
static bool UnicodeIsLetter(char c)
{
var cat =System.Globalization.CharUnicodeInfo.GetUnicodeCategory(c);
switch (cat)
{
case System.Globalization.UnicodeCategory.UppercaseLetter:
case System.Globalization.UnicodeCategory.LowercaseLetter:
case System.Globalization.UnicodeCategory.TitlecaseLetter:
case System.Globalization.UnicodeCategory.ModifierLetter:
case System.Globalization.UnicodeCategory.OtherLetter:
case System.Globalization.UnicodeCategory.LetterNumber: return true;
default: return false;
}
}
bool UnicodeEscapeIsIdentierPartCharacter()
{
System.Diagnostics.Debug.Assert(parent_.src_[parent_.pos_] == '\\');
char uniCodeChar;
int readLength;
if (!TryGetUnicodeFromHexString(out uniCodeChar, out readLength)) return false;
if (UnicodeIsIdentierPartCharacter(uniCodeChar))
{
parent_.pos_ += readLength;
return true;
}
return false;
}
static bool UnicodeIsIdentierPartCharacter(char c)
{
var cat = System.Globalization.CharUnicodeInfo.GetUnicodeCategory(c);
switch (cat)
{
case System.Globalization.UnicodeCategory.UppercaseLetter:
case System.Globalization.UnicodeCategory.LowercaseLetter:
case System.Globalization.UnicodeCategory.TitlecaseLetter:
case System.Globalization.UnicodeCategory.ModifierLetter:
case System.Globalization.UnicodeCategory.OtherLetter:
case System.Globalization.UnicodeCategory.LetterNumber:
case System.Globalization.UnicodeCategory.DecimalDigitNumber:
case System.Globalization.UnicodeCategory.ConnectorPunctuation:
case System.Globalization.UnicodeCategory.NonSpacingMark:
case System.Globalization.UnicodeCategory.SpacingCombiningMark:
case System.Globalization.UnicodeCategory.Format:
return true;
default: return false;
}
}
internal bool ReadCSharpIdentifier_()
{
if( parent_.pos_ >= parent_.srcLen_ ) return false;
if (parent_.src_[parent_.pos_] == '\\') return UnicodeEscapeIsLetter();
if ( !(
UnicodeIsLetter(parent_.src_[parent_.pos_])
|| parent_.src_[parent_.pos_]=='_'
|| parent_.src_[parent_.pos_] == '\\' && UnicodeEscapeIsLetter())) return false;
while ( ++parent_.pos_ < parent_.srcLen_)
{
if (! ( UnicodeIsIdentierPartCharacter(parent_.src_[parent_.pos_])
|| parent_.src_[parent_.pos_] == '\\' && UnicodeEscapeIsIdentierPartCharacter())) break;
}
return true;
}
}
: ReadCSharpIdentifier_;
//A.1.7 Keywords
//----------------------*/
public bool identifier_or_keyword()
{
var _sem= new _identifier_or_keyword(this);
return _sem.ReadCSharpIdentifier_();
}
public bool identifier_or_keyword() /*identifier_or_keyword
{
CSharp3Fast parent_;
internal _identifier_or_keyword(CSharp3Fast parent)
{
parent_ = parent;
}
bool TryGetUnicodeFromHexString(out char uniCodeChar,out int readLength)
{
System.Diagnostics.Debug.Assert(parent_.src_[parent_.pos_] == '\\');
uniCodeChar='\0';
readLength=0;
string hexString;
if (parent_.src_[parent_.pos_ + 1] == 'u' && parent_.pos_ + 5 < parent_.srcLen_)
{
hexString = parent_.src_.Substring(parent_.pos_ + 2, 4);
readLength=6;
}
else if (parent_.src_[parent_.pos_ + 1] == 'U' && parent_.pos_ + 9 < parent_.srcLen_)
{
hexString = parent_.src_.Substring(parent_.pos_ + 2, 8);
readLength=10;
}
else return false;
try
{
uint val = UInt32.Parse(hexString, System.Globalization.NumberStyles.HexNumber);
uniCodeChar = (char)val;
return (val & 0xFFFF0000) == 0;
}
catch (Exception) { return false; }
}
bool UnicodeEscapeIsLetter()
{
System.Diagnostics.Debug.Assert(parent_.src_[parent_.pos_] == '\\');
char uniCodeChar;
int readLength;
if (!TryGetUnicodeFromHexString(out uniCodeChar, out readLength)) return false;
if (UnicodeIsLetter(uniCodeChar))
{
parent_.pos_+= readLength;
return true;
}
return false;
}
static bool UnicodeIsLetter(char c)
{
var cat =System.Globalization.CharUnicodeInfo.GetUnicodeCategory(c);
switch (cat)
{
case System.Globalization.UnicodeCategory.UppercaseLetter:
case System.Globalization.UnicodeCategory.LowercaseLetter:
case System.Globalization.UnicodeCategory.TitlecaseLetter:
case System.Globalization.UnicodeCategory.ModifierLetter:
case System.Globalization.UnicodeCategory.OtherLetter:
case System.Globalization.UnicodeCategory.LetterNumber: return true;
default: return false;
}
}
bool UnicodeEscapeIsIdentierPartCharacter()
{
System.Diagnostics.Debug.Assert(parent_.src_[parent_.pos_] == '\\');
char uniCodeChar;
int readLength;
if (!TryGetUnicodeFromHexString(out uniCodeChar, out readLength)) return false;
if (UnicodeIsIdentierPartCharacter(uniCodeChar))
{
parent_.pos_ += readLength;
return true;
}
return false;
}
static bool UnicodeIsIdentierPartCharacter(char c)
{
var cat = System.Globalization.CharUnicodeInfo.GetUnicodeCategory(c);
switch (cat)
{
case System.Globalization.UnicodeCategory.UppercaseLetter:
case System.Globalization.UnicodeCategory.LowercaseLetter:
case System.Globalization.UnicodeCategory.TitlecaseLetter:
case System.Globalization.UnicodeCategory.ModifierLetter:
case System.Globalization.UnicodeCategory.OtherLetter:
case System.Globalization.UnicodeCategory.LetterNumber:
case System.Globalization.UnicodeCategory.DecimalDigitNumber:
case System.Globalization.UnicodeCategory.ConnectorPunctuation:
case System.Globalization.UnicodeCategory.NonSpacingMark:
case System.Globalization.UnicodeCategory.SpacingCombiningMark:
case System.Globalization.UnicodeCategory.Format:
return true;
default: return false;
}
}
internal bool ReadCSharpIdentifier_()
{
if( parent_.pos_ >= parent_.srcLen_ ) return false;
if (parent_.src_[parent_.pos_] == '\\') return UnicodeEscapeIsLetter();
if ( !(
UnicodeIsLetter(parent_.src_[parent_.pos_])
|| parent_.src_[parent_.pos_]=='_'
|| parent_.src_[parent_.pos_] == '\\' && UnicodeEscapeIsLetter())) return false;
while ( ++parent_.pos_ < parent_.srcLen_)
{
if (! ( UnicodeIsIdentierPartCharacter(parent_.src_[parent_.pos_])
|| parent_.src_[parent_.pos_] == '\\' && UnicodeEscapeIsIdentierPartCharacter())) break;
}
return true;
}
}
: ReadCSharpIdentifier_;
//A.1.7 Keywords
//----------------------*/
{
var _sem= new _identifier_or_keyword(this);
return _sem.ReadCSharpIdentifier_();
}
