Lexer

class numpy::Lexer

numpy C++ class.

Example

#include <numpy/np_ndarray.h>
using namespace numpy;

// Use Lexer
Lexer obj;
// ... operations ...

Other Methods

Signature	Return Type	Location	Example
void advance()	void	df_query.h:89
char current() const	char	df_query.h:80
explicit Lexer(std::string input) : input\_(std::move(input))	explicit Lexer(std::string input) :	df_query.h:164
Token next_token()	Token	df_query.h:166
char peek(size_t ahead = 1) const	char	df_query.h:84
Token read_identifier()	Token	df_query.h:99
Token read_number()	Token	df_query.h:115
Token read_string(char quote)	Token	df_query.h:141
void skip_whitespace()	void	df_query.h:93	View
Token tok(TokenType::NUMBER, num)	Token	df_query.h:136

Code Examples

The following examples are extracted from the test suite.

skip_whitespace (np_test_5_all.cpp:976)

      assert_condition(type1 == "int", "Failed to detect int type");
      assert_condition(type2 == "float", "Failed to detect float type");
      assert_condition(type3 == "string", "Failed to detect string type");

      // std::cout << "  Tested value type detection" << std::endl;

      std::cout << " -> tests passed" << std::endl;
    }

    void np_test_io_skip_whitespace() {
      std::cout << "========= skip_whitespace() utility ============================";

      // Test whitespace skipping
      std::string test = "   \t\n  text";
      size_t pos = 0;

      // Skip whitespace
      while (pos < test.size() && std::isspace(test[pos])) {
        ++pos;
      }