feat: support uuid function

Cargo.toml

@@ -26,6 +26,7 @@ serde_json = "1.0.117"
 rand = "0.8.5"
 regex = "1.11.1"
 num-format = "0.4.4"
+uuid = { version = "1.8.0", features = ["fast-rng", "v4", "v7"] }
 
 [dev-dependencies]
 test-case = "3.3.1"

src/evaluator/functions.rs

@@ -5,6 +5,7 @@ use regex::Regex;
 use std::borrow::{Borrow, Cow};
 use std::collections::HashSet;
 use std::time::{SystemTime, UNIX_EPOCH};
+use uuid::Uuid;
 
 use crate::datetime::{format_custom_date, parse_custom_format, parse_timezone_offset};
 use crate::parser::expressions::check_balanced_brackets;
@@ -1079,6 +1080,18 @@ pub fn fn_millis<'a>(
     ))
 }
 
+pub fn fn_uuid<'a>(
+    context: FunctionContext<'a, '_>,
+    args: &[&'a Value<'a>],
+) -> Result<&'a Value<'a>> {
+    max_args!(context, args, 0);
+
+    Ok(Value::string(
+        &context.arena,
+        Uuid::new_v4().to_string().as_str(),
+    ))
+}
+
 pub fn to_millis<'a>(
     context: FunctionContext<'a, '_>,
     args: &[&'a Value<'a>],

src/lib.rs

@@ -172,6 +172,7 @@ impl<'a> JsonAta<'a> {
         bind_native!("uppercase", 1, fn_uppercase);
         bind_native!("zip", 1, fn_zip);
         bind_native!("millis", 0, fn_millis);
+        bind_native!("uuid", 0, fn_uuid);
 
         let chain_ast = Some(parser::parse(
             "function($f, $g) { function($x){ $g($f($x)) } }",

tests/testsuite/groups/function-uuid/case000.json

@@ -0,0 +1,6 @@
+{
+    "expr": "$uuid()",
+    "dataset": null,
+    "bindings": {},
+    "result_re": "^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$"
+}