public abstract bool Get(TextBuffer text_buffer);
public override bool Get(TextBuffer text_buffer)
{
return(true);
}
public override bool Get(TextBuffer text_buffer)
{
char ch = text_buffer.Char();
switch (ch)
{
case '+':
m_type = TokenType.PLUS;
text_buffer.NextChar();
break;
case '-':
m_type = TokenType.MINUS;
text_buffer.NextChar();
break;
case '*':
m_type = TokenType.STAR;
text_buffer.NextChar();
break;
case '/':
m_type = TokenType.SLASH;
text_buffer.NextChar();
break;
case '(':
m_type = TokenType.LEFT_PAREN;
text_buffer.NextChar();
break;
case ')':
m_type = TokenType.RIGHT_PAREN;
text_buffer.NextChar();
break;
case '[':
m_type = TokenType.LEFT_BRACKET;
text_buffer.NextChar();
break;
case ']':
m_type = TokenType.RIGHT_BRACKET;
text_buffer.NextChar();
break;
case '.':
m_type = TokenType.PERIOD;
text_buffer.NextChar();
break;
case ',':
m_type = TokenType.COMMA;
text_buffer.NextChar();
break;
case '?':
m_type = TokenType.QUESTION;
text_buffer.NextChar();
break;
case ':':
m_type = TokenType.SEMICOLON;
text_buffer.NextChar();
break;
case '=':
m_type = TokenType.EQUAL;
ch = text_buffer.NextChar();
if (ch == '=')
{
m_type = TokenType.EQUAL_EQUAL;
text_buffer.NextChar();
}
break;
case '!':
m_type = TokenType.NOT;
ch = text_buffer.NextChar();
if (ch == '=')
{
m_type = TokenType.NOT_EQUAL;
text_buffer.NextChar();
}
break;
case '>':
m_type = TokenType.GREATER;
ch = text_buffer.NextChar();
if (ch == '=')
{
m_type = TokenType.GREATER_EQUAL;
text_buffer.NextChar();
}
break;
case '<':
m_type = TokenType.LESS;
ch = text_buffer.NextChar();
if (ch == '=')
{
m_type = TokenType.LESS_EQUAL;
text_buffer.NextChar();
}
break;
case '&':
m_type = TokenType.AND_BITWISE;
ch = text_buffer.NextChar();
if (ch == '&')
{
m_type = TokenType.AND;
text_buffer.NextChar();
}
break;
case '|':
m_type = TokenType.OR_BITWISE;
ch = text_buffer.NextChar();
if (ch == '|')
{
m_type = TokenType.OR;
text_buffer.NextChar();
}
break;
default:
LogWrapper.LogError("Expression: SymbolToken.Get(), illegal symbol, index = ", text_buffer.CurrentIndex, ", char = ", text_buffer.Char());
m_type = TokenType.ERROR;
return(false);
}
return(true);
}
