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