//if-statement ::= 'if' '(' <expression> ')' '{' <statement>* '}' ('else' '{' <statement>* '}')?
private void ParseIfStatement()
{
Match(new Token(TokenType.Keyword, "if"));
Match(new Token(TokenType.Symbol, "("));
ParseExpression();
_codeGenerator.BeginIf();
Match(new Token(TokenType.Symbol, ")"));
Match(new Token(TokenType.Symbol, "{"));
ParseStatements();
Match(new Token(TokenType.Symbol, "}"));
_codeGenerator.PossibleElse();
if (LookAheadToken.Value == "else")
{
Match(new Token(TokenType.Keyword, "else"));
Match(new Token(TokenType.Symbol, "{"));
ParseStatements();
Match(new Token(TokenType.Symbol, "}"));
}
_codeGenerator.EndIf();
}
