ast-grep-language 0.42.2

Search and Rewrite code at large scale using precise AST pattern
Documentation 
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#![cfg(test)]
use super::*;
use crate::test::{test_match_lang, test_replace_lang};

fn test_match(s1: &str, s2: &str) {
  test_match_lang(s1, s2, Hcl)
}

#[test]
fn test_hcl_pattern() {
  test_match("$A = $B", r#"foo = "bar""#);
  test_match(
    "resource $TYPE $NAME $BODY",
    r#"resource "aws_instance" "example" { ami = "ami-123" }"#,
  );
  test_match(
    "$BLOCK $BODY",
    r#"terraform { required_providers { aws = { source = "hashicorp/aws" } } }"#,
  );
  test_match(
    "variable $NAME $CONFIG",
    r#"variable "region" { default = "us-west-2" }"#,
  );
  test_match(
    "output $NAME $VALUE",
    r#"output "instance_ip" { value = aws_instance.example.public_ip }"#,
  );
  test_match("$VAR = [$$$ITEMS]", r#"tags = ["production", "web"]"#);
  test_match(
    "$VAR = { $$$PAIRS }",
    r#"labels = { environment = "prod", team = "backend" }"#,
  );
  test_match(r#"$VAR = "$CONTENT""#, r#"name = "instance""#);
}

fn test_replace(src: &str, pattern: &str, replacer: &str) -> String {
  test_replace_lang(src, pattern, replacer, Hcl)
}

#[test]
fn test_hcl_replace() {
  let ret = test_replace(r#"foo = "bar""#, r#"$A = $B"#, r#"$B = $A"#);
  assert_eq!(ret, r#""bar" = foo"#);

  let ret = test_replace(
    r#"resource "aws_instance" "example" { ami = "ami-123" }"#,
    r#"resource $TYPE $NAME $BODY"#,
    r#"resource $NAME $TYPE $BODY"#,
  );
  assert_eq!(
    ret,
    r#"resource "example" "aws_instance" { ami = "ami-123" }"#
  );

  let ret = test_replace(
    r#"variable "region" { default = "us-west-2" }"#,
    r#"variable "region" { default = $DEFAULT }"#,
    r#"variable "region" { default = "eu-west-1" }"#,
  );
  assert_eq!(ret, r#"variable "region" { default = "eu-west-1" }"#);
}