ast-grep-language 0.42.1

Search and Rewrite code at large scale using precise AST pattern
Documentation 
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#![cfg(test)]

use super::*;

fn test_match(query: &str, source: &str) {
  use crate::test::test_match_lang;
  test_match_lang(query, source, Cpp);
}

#[test]
fn test_cpp_pattern() {
  test_match("$A->b()", "expr->b()");
  test_match("if (a) { $$$VERYLONGNAME }", "if (a) { a;b;c; }");
  test_match("expr->$B()", "expr->b()");
  test_match("ns::ns2::$F()", "ns::ns2::func()");
  test_match("template <typename $T>", "template <typename T>");
  test_match("if constexpr ($C) {}", "if constexpr (13+5==18) {}");
  test_match(
    "template <typename T> typename std::enable_if<$C, T>::type;",
    "template <typename T> typename std::enable_if<std::is_signed<T>::value, T>::type;",
  );
  test_match("if ($A)", "if (a | b) abc;");
  // see https://github.com/ast-grep/ast-grep/issues/1791
  test_match("struct $A: $B", "struct A: B {}");
}

fn test_replace(src: &str, pattern: &str, replacer: &str) -> String {
  use crate::test::test_replace_lang;
  test_replace_lang(src, pattern, replacer, Cpp)
}

#[test]
fn test_cpp_replace() {
  let ret = test_replace("expr->b()", "$A->b()", "func($A)->b()");
  assert_eq!(ret, "func(expr)->b()");
  let ret = test_replace("if (a) { a;b;c; }", "if (a) { $$$A }", "$$$A");
  assert_eq!(ret, "a;b;c;");
  // https://stackoverflow.com/questions/78663351
  let ret = test_replace(
    "if (a) { a;b;c; }",
    "if (a) { $$$VERYLONGNAME }",
    "$$$VERYLONGNAME",
  );
  assert_eq!(ret, "a;b;c;");
}