prefer hashmap over btreemap where ordering is unimportant

src/builtin/color/hsl.rs

@@ -1,4 +1,4 @@
-use std::collections::BTreeMap;
+use std::collections::HashMap;
 
 use super::Builtin;
 use crate::color::Color;
@@ -6,7 +6,7 @@ use crate::common::QuoteKind;
 use crate::units::Unit;
 use crate::value::{Number, Value};
 
-pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
+pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
     decl!(f "hsl", |args, _| {
         let hue = match arg!(args, 0, "hue") {
             Value::Dimension(n, _) => n,

src/builtin/color/mod.rs

@@ -1,4 +1,4 @@
-use std::collections::BTreeMap;
+use std::collections::HashMap;
 
 use super::Builtin;
 
@@ -7,7 +7,7 @@ mod opacity;
 mod other;
 mod rgb;
 
-pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
+pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
     hsl::register(f);
     opacity::register(f);
     other::register(f);

src/builtin/color/opacity.rs

@@ -1,4 +1,4 @@
-use std::collections::BTreeMap;
+use std::collections::HashMap;
 
 use super::Builtin;
 use crate::common::QuoteKind;
@@ -6,7 +6,7 @@ use crate::units::Unit;
 use crate::value::Number;
 use crate::value::Value;
 
-pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
+pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
     decl!(f "alpha", |args, _| {
         max_args!(args, 1);
         match arg!(args, 0, "color") {

src/builtin/color/other.rs

@@ -1,4 +1,4 @@
-use std::collections::BTreeMap;
+use std::collections::HashMap;
 
 use super::Builtin;
 use crate::color::Color;
@@ -35,7 +35,7 @@ macro_rules! opt_arg {
     };
 }
 
-pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
+pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
     decl!(f "change-color", |args, _| {
         if args.get("1").is_some() {
             return Err("Only one positional argument is allowed. All other arguments must be passed by name.".into());

src/builtin/color/rgb.rs

@@ -1,11 +1,11 @@
-use std::collections::BTreeMap;
+use std::collections::HashMap;
 
 use super::Builtin;
 use crate::color::Color;
 use crate::units::Unit;
 use crate::value::{Number, Value};
 
-pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
+pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
     decl!(f "rgb", |args, _| {
         if args.len() == 1 {
             let mut channels = match arg!(args, 0, "channels") {

src/builtin/list.rs

@@ -1,10 +1,10 @@
-use std::collections::BTreeMap;
+use std::collections::HashMap;
 
 use super::Builtin;
 use crate::units::Unit;
 use crate::value::{Number, Value};
 
-pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
+pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
     decl!(f "length", |args, _| {
         let len = match arg!(args, 0, "list") {
             Value::List(v, _) => Number::from(v.len()),

src/builtin/math.rs

@@ -1,10 +1,10 @@
-use std::collections::BTreeMap;
+use std::collections::HashMap;
 
 use super::Builtin;
 use crate::units::Unit;
 use crate::value::{Number, Value};
 
-pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
+pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
     decl!(f "percentage", |args, _| {
         max_args!(args, 1);
         let num = match arg!(args, 0, "number") {

src/builtin/meta.rs

@@ -1,11 +1,11 @@
-use std::collections::BTreeMap;
+use std::collections::HashMap;
 
 use super::{Builtin, GLOBAL_FUNCTIONS};
 use crate::common::QuoteKind;
 use crate::units::Unit;
 use crate::value::Value;
 
-pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
+pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
     decl!(f "if", |args, _| {
         max_args!(args, 3);
         if arg!(args, 0, "condition").is_true()? {

src/builtin/mod.rs

@@ -1,5 +1,5 @@
 use lazy_static::lazy_static;
-use std::collections::BTreeMap;
+use std::collections::HashMap;
 
 use crate::args::CallArgs;
 use crate::common::Scope;
@@ -20,8 +20,8 @@ mod string;
 pub(crate) type Builtin = Box<dyn Fn(&mut CallArgs, &Scope) -> SassResult<Value> + Send + Sync>;
 
 lazy_static! {
-    pub(crate) static ref GLOBAL_FUNCTIONS: BTreeMap<String, Builtin> = {
+    pub(crate) static ref GLOBAL_FUNCTIONS: HashMap<String, Builtin> = {
-        let mut m = BTreeMap::new();
+        let mut m = HashMap::new();
         color::register(&mut m);
         list::register(&mut m);
         math::register(&mut m);

src/builtin/string.rs

@@ -1,4 +1,4 @@
-use std::collections::BTreeMap;
+use std::collections::HashMap;
 
 use num_bigint::BigInt;
 use num_traits::cast::ToPrimitive;
@@ -9,7 +9,7 @@ use crate::common::QuoteKind;
 use crate::units::Unit;
 use crate::value::{Number, Value};
 
-pub(crate) fn register(f: &mut BTreeMap<String, Builtin>) {
+pub(crate) fn register(f: &mut HashMap<String, Builtin>) {
     decl!(f "to-upper-case", |args, _| {
         max_args!(args, 1);
         match arg!(args, 0, "string") {