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, Go);
}

fn test_non_match(query: &str, source: &str) {
  use crate::test::test_non_match_lang;
  test_non_match_lang(query, source, Go);
}

#[test]
fn test_go_str() {
  test_match("print($A)", "print(123)");
  test_match("print('123')", "print('123')");
  test_non_match("print('123')", "print('456')");
  test_non_match("'123'", "'456'");
}

#[test]
fn test_go_pattern() {
  test_match("$A = 0", "a = 0");
  test_match(
    r#"func $A($$$) $B { $$$ }"#,
    r#"
func plus(a int, b int) int {
  return a + b
}"#,
  );
}

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

#[test]
fn test_go_replace() {
  let ret = test_replace(
    r#"
func intSeq() {
  defer func()  {
      i++
  }()
}"#,
    r#"defer func() { $$$BODY }()"#,
    r#"func b() { $$$BODY}"#,
  );
  assert_eq!(
    ret,
    r#"
func intSeq() {
  func b() { i++
  }
}"#
  );
}