string CompiledModelGenerator::substituteTerms(const string& reactionName, const string& inputEquation, bool bFixAmounts)
{
string equation = cleanEquation(inputEquation);
if (equation.size() < 1)
{
return string("0");
}
Scanner s;
stringstream ss;
ss<<equation;
s.AssignStream(ss);
s.startScanner();
s.nextToken();
CodeBuilder sb;
try
{
while (s.token() != CodeTypes::tEndOfStreamToken)
{
substituteToken(reactionName, bFixAmounts, s, sb);
s.nextToken();
}
}
catch (const Exception& e)
{
throw Exception(e.Message());
}
return sb.ToString();
}
// final -> Num | "(" Expression ")" | m [ Expression ]
void Parser:: Final()
{
switch (scanner.nextToken())
{
case T_OPENPAREN: // (
{
scanner.eatToken(T_OPENPAREN);
switch(scanner.nextToken())
{
case T_M:
case T_NUMBER:
case T_OPENPAREN:
Expression();
case T_EOF:
break;
}
scanner.eatToken(T_CLOSEPAREN);
break;
}
case T_M: // m
{
scanner.eatToken(T_M);
scanner.eatToken(T_OPENBRACKET);
switch(scanner.nextToken())
{
case T_M:
case T_NUMBER:
case T_OPENPAREN:
Expression();
case T_EOF:
break;
}
scanner.eatToken(T_CLOSEBRACKET);
break;
}
case T_NUMBER: // num
{
scanner.eatToken(T_NUMBER);
num_parser = scanner.getNumberValue();
break;
}
case T_EOF:
break;
default:
{
parseError(scanner.lineNumber(), scanner.nextToken());
break;
}
}
}
RationalExpression::RationalExpression(Scanner& s) {
this->numerator = StringToInteger(s.nextToken());
string lookahead = s.nextToken();
if (lookahead == "/") {
this->denominator = StringToInteger(s.nextToken());
} else {
s.saveToken(lookahead);
this->denominator = 1;
}
reduce();
}
// StatementS -> Statement Term
void Parser::Statements()
{
Statement();
if (scanner.nextToken() == T_SEMICOLON)
Term();
}
int main(int argc, char* argv[]) {
if (argc == 2 && (strcmp(argv[1], "-s") == 0)) {
Scanner scanner;
while (scanner.nextToken() != T_EOF) {
std::cout << tokenToString(scanner.nextToken()) << " ";
scanner.eatToken(scanner.nextToken());
}
std::cout<<std::endl;
} else if (argc == 2 && (strcmp(argv[1], "-e") == 0)) {
Parser parser(true);
parser.parse();
} else {
Parser parser(false);
parser.parse();
}
return 0;
}
int main( int /* argc */, char** /* argv */ )
{
Scanner scanner = Scanner();
SymbolTable st = SymbolTable();
Token *currTok;
currTok = scanner.nextToken();
while( 1 )
{
std::cout << currTok->tokenCodeToString();
if( currTok->getDataType() == dt_OP )
std::cout << "(" << currTok->opCodeToString() << ")";
else if( currTok->getDataType() != dt_KEYWORD && currTok->getDataType() != dt_NONE )
{
std::cout << "(" << currTok->getDataValue().lexeme << ")";
}
std::cout << " ";
//symtab
if( currTok->getTokenCode() == tc_ID || currTok->getTokenCode() == tc_NUMBER )
{
SymbolTableEntry *entry = st.lookup( currTok->getDataValue().lexeme );
if(!entry)
{
entry = st.insert( currTok->getDataValue().lexeme );
currTok->setSymTabEntry( entry );
}
currTok->setSymTabEntry( entry );
}
if(currTok->getTokenCode() == tc_EOF)
break;
currTok = scanner.nextToken();
}
std::cout << "\n\n";
st.print();
return 0;
}
void Parser::parse() {
// This is the entry point for the parser, which simply starts parsing
// the grammar by calling the function for the start symbol.
//set lookahead to nextToken()
lookahead = scanner.nextToken();
//call the start symbol
Start();
match(T_EOF);
}
void Parser::match(token current_token) {
if(current_token == lookahead) {
scanner.eatToken(current_token);
lookahead = scanner.nextToken();
}
else {
mismatchError(scanner.lineNumber(),current_token , lookahead);
}
}
// power_Tail -> "**" final power_Tail | Epsilon
void Parser::Power_Tail()
{
switch (scanner.nextToken()) {
case T_POWER: // **
{
scanner.eatToken(T_POWER);
Final();
if (scanner.nextToken() == T_POWER)
Power_Tail();
break;
}
case T_EOF:
break;
default:
{
parseError(scanner.lineNumber(), scanner.nextToken());
break;
}
}
}
/**
* logics: import, declare, init a token string, ...
* patt: iterator for items
*/
void countTokens()
{
Scanner scanner; // uppercamelcase for Class
cout << "Enter a sentence as a token string: ";
scanner.setInput(getLine()); // scanner.setInput(string str)
while(scanner.hasMoreToken()) { // bool scanner.hasMoretoken()
cout << scanner.nextToken() << " "; // string scanner.nextToken()
}
cout << endl;
}
// Factor_Tail-> "*" power Factor_Tail | "/"" power Factor_Tail | Epsolon
void Parser::Factor_Tail()
{
switch (scanner.nextToken()) {
case T_MULTIPLY: // *
{
scanner.eatToken(T_MULTIPLY);
Power();
if (scanner.nextToken() == T_MULTIPLY || scanner.nextToken() == T_DIVIDE)
Factor_Tail();
break;
}
case T_DIVIDE: // /
{
scanner.eatToken(T_DIVIDE);
Power();
if (scanner.nextToken() == T_MULTIPLY || scanner.nextToken() == T_DIVIDE)
Factor_Tail();
break;
}
case T_EOF:
break;
default:
{
parseError(scanner.lineNumber(), scanner.nextToken());
break;
}
}
}
//Exp_Tail -> "+" Factor Exp_Tail | "-" Factor Exp_Tail | EPSOLON
void Parser::Exp_Tail()
{
switch (scanner.nextToken())
{
case T_PLUS: // +
{
scanner.eatToken(T_PLUS);
Factor();
if (scanner.nextToken() == T_PLUS || scanner.nextToken() == T_MINUS)
Exp_Tail();
break;
}
case T_MINUS: // -
{
scanner.eatToken(T_MINUS);
Factor();
if (scanner.nextToken() == T_PLUS || scanner.nextToken() == T_MINUS)
Exp_Tail();
break;
}
case T_EOF:
break;
default:
{
parseError(scanner.lineNumber(), scanner.nextToken());
break;
}
}
}
// Term -> ; Statement Term | Epsolon
void Parser::Term()
{
//cout<< tokenToString(scanner.nextToken()) <<endl;
switch (scanner.nextToken()) {
case T_SEMICOLON: //;
{
scanner.eatToken(T_SEMICOLON);
Statement();
if (scanner.nextToken() == T_SEMICOLON)
Term();
//Term();
break;
}
case T_EOF:
break;
default:
{
parseError(scanner.lineNumber(), scanner.nextToken());
break;
}
}
}
// Factor -> power Factor_Tail
void Parser:: Factor()
{
Power();
switch (scanner.nextToken()) {
case T_MULTIPLY: // *
{
Factor_Tail();
break;
}
case T_DIVIDE: // /
{
Factor_Tail();
break;
}
}
}
// Expression -> Factor Exp_Tail
void Parser::Expression()
{
Factor();
switch (scanner.nextToken())
{
case T_PLUS: // +
{
Exp_Tail();
break;
}
case T_MINUS: // -
{
Exp_Tail();
break;
}
}
}
TokenSequence* Parser::composeTable(char* filename) {
TokenSequence* sequence = new TokenSequence(10, 10);
Token* singulum = nullptr;
Symboltable* table = new Symboltable();
Scanner* scanner = new Scanner(filename, table);
std::cout << "Initialization works\n";
do {
std::cout << "debuging *** Parser::composeTable DO-STRT" << std::endl;
singulum = scanner->nextToken();
if (singulum != nullptr) {
if (singulum->getType() == Syntax::PROH_Z) {
std::cerr << "error line " << singulum->getLine() << " column " << singulum->getColumn() << ": syntax error type 1 (unsupported token)\n";
exit(1);
}
std::cout << "crashing?\n";
sequence->add(singulum, false);
}
std::cout << "debuging *** Parser::composeTable DO-END" << std::endl;
} while(singulum != nullptr);
std::cout << "Scanning works\n";
return sequence;
}
// Statement -> "m" "[" Expression "]" "=" Expression | print Expression
void Parser::Statement()
{
switch(scanner.nextToken())
{
case T_M:
{
scanner.eatToken(T_M);
scanner.eatToken(T_OPENBRACKET);
switch(scanner.nextToken())
{
case T_M:
case T_NUMBER:
case T_OPENPAREN:
Expression();
case T_EOF:
break;
}
scanner.eatToken(T_CLOSEBRACKET);
scanner.eatToken(T_EQUALS);
switch(scanner.nextToken())
{
case T_M:
case T_NUMBER:
case T_OPENPAREN:
Expression();
case T_EOF:
break;
}
break;
}
case T_PRINT:
{
scanner.eatToken(T_PRINT);
switch(scanner.nextToken())
{
case T_M:
case T_NUMBER:
case T_OPENPAREN:
Expression();
case T_EOF:
break;
}
break;
}
case T_EOF:
break;
default:
{
parseError(scanner.lineNumber(), scanner.nextToken());
break;
}
}
}
// power -> final Power_Tail
void Parser::Power()
{
Final();
if (scanner.nextToken() == T_POWER)
Power_Tail();
}