Merge pull request #155 from MiSawa/fix-clippy-needless-borrow

Fix against needless borrow warning of clippy

build.rs

@@ -3,7 +3,7 @@ use std::process::Command;
 fn main() {
     let package_version = env!("CARGO_PKG_VERSION");
     let git_revision = Command::new("git")
-        .args(&["rev-parse", "HEAD"])
+        .args(["rev-parse", "HEAD"])
         .output()
         .ok()
         .and_then(|o| String::from_utf8(o.stdout).ok())

src/compile/compiler.rs

@@ -1193,7 +1193,7 @@ impl Compiler {
                 match str {
                     Some(s) => self.compile_string(
                         s,
-                        &|compiler: &mut Compiler, next| {
+                        |compiler: &mut Compiler, next| {
                             Ok(compiler
                                 .emitter
                                 .emit_normal_op(ByteCode::Intrinsic0(stringifier.clone()), next))

src/intrinsic/index.rs

@@ -180,7 +180,7 @@ pub(crate) fn slice(
             path_element,
         )),
         Value::Array(array) => Ok((
-            (&array[range]).iter().cloned().collect::<Array>().into(),
+            array[range].iter().cloned().collect::<Array>().into(),
             path_element,
         )),
         _ => unreachable!(),

src/intrinsic/string.rs

@@ -129,7 +129,7 @@ pub(crate) fn text(value: Value) -> Result<Value> {
 pub(crate) fn from_json(value: Value) -> Result<Value> {
     match value {
         Value::String(s) => {
-            serde_json::from_str(&*s).map_err(|_| QueryExecutionError::InvalidJson(s.clone()))
+            serde_json::from_str(&s).map_err(|_| QueryExecutionError::InvalidJson(s.clone()))
         }
         _ => Err(QueryExecutionError::InvalidArgType("fromjson", value)),
     }