#include <stdexcept>
#include <string>
+using namespace std;
+
// - a - b was misparsed as -a + b due to a bug in parser::parse_unary_expr()
-static int check1(std::ostream& err_str)
+static int check1(ostream& err_str)
{
- const std::string srep("-a-b");
+ const string srep("-a-b");
parser reader;
ex e = reader(srep);
ex a = reader.get_syms()["a"];
ex d = (e - g).expand();
if (!d.is_zero()) {
err_str << "\"" << srep << "\" was misparsed as \""
- << e << "\"" << std::endl;
+ << e << "\"" << endl;
return 1;
}
return 0;
}
/// Parser was rejecting the valid expression '5 - (3*x)/10'.
-static int check2(std::ostream& err_str)
+static int check2(ostream& err_str)
{
- const std::string srep("5-(3*x)/10");
+ const string srep("5-(3*x)/10");
parser reader;
ex e = reader(srep);
ex x = reader.get_syms()["x"];
ex d = (e - g).expand();
if (!d.is_zero()) {
err_str << "\"" << srep << "\" was misparsed as \""
- << e << "\"" << std::endl;
+ << e << "\"" << endl;
return 1;
}
return 0;
/// parse_literal_expr forget to consume the token, so parser get
/// very confused.
-static int check3(std::ostream& err_str)
+static int check3(ostream& err_str)
{
- const std::string srep("5-(2*I)/3");
+ const string srep("5-(2*I)/3");
parser reader;
ex e = reader(srep);
ex g = numeric(5) - (numeric(2)*I)/3;
ex d = (e - g).expand();
if (!d.is_zero()) {
err_str << "\"" << srep << "\" was misparsed as \""
- << e << "\"" << std::endl;
+ << e << "\"" << endl;
return 1;
}
return 0;
}
/// parser happily accepted various junk like 'x^2()+1'
-static int check4(std::ostream& err_str)
+static int check4(ostream& err_str)
{
- const std::string junk("x^2()+1");
+ const string junk("x^2()+1");
parser reader;
ex e;
try {
e = reader(junk);
- err_str << "parser accepts junk: \"" << junk << "\"" << std::endl;
+ err_str << "parser accepts junk: \"" << junk << "\"" << endl;
return 1;
} catch (parse_error& err) {
// Ok, parser rejects the nonsense.
int main(int argc, char** argv)
{
- std::cout << "checking for parser bugs. " << std::flush;
- std::ostringstream err_str;
+ cout << "examining old parser bugs" << flush;
+ ostringstream err_str;
int errors = 0;
- errors += check1(err_str);
- errors += check2(err_str);
- errors += check3(err_str);
- errors += check4(err_str);
+ errors += check1(err_str); cout << '.' << flush;
+ errors += check2(err_str); cout << '.' << flush;
+ errors += check3(err_str); cout << '.' << flush;
+ errors += check4(err_str); cout << '.' << flush;
if (errors) {
- std::cout << "Yes, unfortunately:" << std::endl;
- std::cout << err_str.str();
+ cout << "Yes, unfortunately:" << endl;
+ cout << err_str.str();
} else {
- std::cout << "Not found. ";
+ cout << "Not found. ";
}
return errors;
}