void CompilationEngine::compileSubroutine()
{
/* ('constructor' | 'function' | 'method')
('void' | type) subroutineName '(' parameterList ')'
subroutineBody */
tagNonTerminal("subroutineDec");
if (jt.keyword() == Keyword::kCONSTRUCTOR)
readKeyword("constructor", Keyword::kCONSTRUCTOR);
else if (jt.keyword() == Keyword::kFUNCTION)
readKeyword("function", Keyword::kFUNCTION);
else
readKeyword("method", Keyword::kMETHOD);
nextToken();
if (jt.tokenType() == TokenType::kKEYWORD && jt.keyword() == Keyword::kVOID)
readKeyword("void", Keyword::kVOID);
else
readType();
nextToken();
readIdentifier();
nextToken();
readSymbol('(');
nextToken();
compileParameterList();
readSymbol(')');
nextToken();
compileSubroutineBody();
untagNonTerminal("subroutineDec");
}
void CompilationEng::compileSubroutine()
{
while(true)
{
getToken();
if(m_token == "}")
{
m_bPutback = true;
break;
}
else
{
if(m_token == "constructor" || m_token == "function" || m_token == "method")
{
printNonterminal("subroutineDec");
numOfTab++;
printCurrentToken(false); //<keyword> constructor|function|method </keyword>
printCurrentToken(true); //<keyword> void|type </keyword> void is also a keyword
printCurrentToken(true); //<symbol> subroutineName </keyword>
printCurrentToken(true); //<symbol> ( </symbol>
compileParameterList();
printCurrentToken(false); // <symbol> ) </symbol>
compileSubroutineBody();
numOfTab--;
printNonterminal("subroutineDec",false); //end of subroutine
}
else
{
m_ofs << m_token << endl;
break;
}
}
}
}
