87
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}
return result;
}
Term Lexer::readIntegerLiteral( Location&& loc )
{
// skip leading zeros
while( m_input.good() )
{
auto c = m_input.peek();
if( c!= '0' )
break;
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}
return result;
}
Term Lexer::readIntegerLiteral( Location&& loc )
{
// Skip the leading zero, if any, then check for a base marker (x or b)
// (might add 'o' for octal later but fuck octal for now)
auto c = m_input.peek();
if( c == '0' )
{
m_input.get();
c = m_input.peek();
if( c == 'x' )
{
m_input.get();
return readIntegerLiteralHex( move( loc ) );
}
if( c == 'b' )
{
m_input.get();
return readIntegerLiteralBin( move( loc ) );
}
}
return readIntegerLiteralDec( move( loc ) );
}
Term Lexer::readIntegerLiteralBin( Location&& loc )
{
// skip leading zeros
while( m_input.good() )
{
auto c = m_input.peek();
if( c!= '0' )
break;
m_input.get();
}
string str;
while( m_input.good() )
{
auto c = m_input.peek();
if( c != '0' && c != '1' )
break;
m_input.get();
str.push_back( c );
}
return Term( move( loc ), APSInt( llvm::APInt( str.size(), str, 2 ) ) );
}
Term Lexer::readIntegerLiteralDec( Location&& loc )
{
// skip leading zeros
while( m_input.good() )
{
auto c = m_input.peek();
if( c!= '0' )
break;
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m_input.get();
str.push_back( c );
}
return Term( move( loc ), APSInt( str ) );
}
Term Lexer::readAlphanumericIdentifier( Location&& loc )
{
// TODO this will need to be reworked some day to handle unicode
// identifiers.
string str;
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m_input.get();
str.push_back( c );
}
return Term( move( loc ), APSInt( str ) );
}
Term Lexer::readIntegerLiteralHex( Location&& loc )
{
// skip leading zeros
while( m_input.good() )
{
auto c = m_input.peek();
if( c!= '0' )
break;
m_input.get();
}
string str;
while( m_input.good() )
{
auto c = m_input.peek();
bool isHexDigit = isdigit( c );
isHexDigit = isHexDigit || ( c >= 'a' && c <= 'f' );
isHexDigit = isHexDigit || ( c >= 'A' && c <= 'F' );
if( !isHexDigit )
break;
m_input.get();
str.push_back( c );
}
return Term( move( loc ),
APSInt( llvm::APInt( str.size() * 4, str, 16 ) ) );
}
Term Lexer::readAlphanumericIdentifier( Location&& loc )
{
// TODO this will need to be reworked some day to handle unicode
// identifiers.
string str;
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