//////////////////////////////////////////
// return value: 0, execute new statement.
// -20, abort it.
// other error codes from readStmt()
//////////////////////////////////////////
Int32 InputStmt::fix(Int32 append_only)
{
Int32 retval = 0;
if (!append_only)
{
Option option;
StringFragment * fragment = first_fragment;
while (fragment)
{
char * new_fragment = new char[MAX_FRAGMENT_LEN + 1];
option = fix_string(fragment->fragment,new_fragment,MAX_FRAGMENT_LEN);
if (option == ABORT_O)
return -20; // caller is responsible for deleting this InputStmt
delete [] fragment->fragment;
fragment->fragment = new_fragment;
fragment = fragment->next;
}
}
else
{
retval = readStmt(NULL/*interactive only, so input is stdin*/);
}
// Pack (or repack) the new stmt.
pack();
return retval;
} // fix()
/*Conjunto de Construções*/
void SyntaxAnalysis::expression() {
Token::Token tokenTemp = vecToken[0];
Token::Token recover;
Tree::Tree * tempTree = subTree;
setAndAdvance(EXPSTRING);
switch (tokenTemp.getTokenType()) {
case(Token::INTEGER): case(Token::FLOAT): case(Token::VOID):
targetAdvance();
variableDecStmt();
break;
case(Token::WRITE):
writeStmt();
break;
case(Token::READ):
readStmt();
break;
case(Token::RETURN):
returnValue();
break;
case(Token::IDENTIFIER):
recover = tokenTemp;
tokenTemp = targetAdvance();
switch (tokenTemp.getTokenType()) {
case(Token::ATTRIBUTION):
attributionStmt();
break;
case(Token::OPEN):
functionCallStmt();
break;
default: this->error.expressionError(recover);
}
break;
case(Token::IF):
ifStmt();
break;
case(Token::REPEAT):
whileStmt();
break;
default: this->error.expressionError(tokenTemp);
}
subTree = tempTree;
}
