presets: polyfill extract_if

Cargo.lock

@@ -1258,6 +1258,7 @@ dependencies = [
  "nom_locate",
  "num-traits",
  "thiserror",
+ "vec_extract_if_polyfill",
 ]
 
 [[package]]
@@ -2348,6 +2349,12 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
 
+[[package]]
+name = "vec_extract_if_polyfill"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40c9cb5fb67c2692310b6eb3fce7dd4b6e4c9a75be4f2f46b27f0b2b7799759c"
+
 [[package]]
 name = "vec_map"
 version = "0.8.2"

librashader-presets/Cargo.toml

@@ -17,6 +17,7 @@ nom = "7.1.1"
 nom_locate = "4.0.0"
 librashader-common = { path = "../librashader-common", version = "0.2.0-beta.2" }
 num-traits = "0.2"
+vec_extract_if_polyfill = "0.1"
 
 [features]
 parse_legacy_glsl = []

librashader-presets/src/lib.rs

@@ -7,7 +7,8 @@
 //! as input to create a filter chain.
 //!
 //! Re-exported as [`librashader::presets`](https://docs.rs/librashader/latest/librashader/presets/index.html).
-#![feature(extract_if)]
+
+#![allow(unstable_name_collisions)]
 
 mod error;
 mod parse;

librashader-presets/src/parse/preset.rs

@@ -1,6 +1,7 @@
 use crate::parse::remove_if;
 use crate::parse::value::Value;
 use crate::{ParameterConfig, Scale2D, Scaling, ShaderPassConfig, ShaderPreset, TextureConfig};
+use vec_extract_if_polyfill::MakeExtractIf;
 
 pub fn resolve_values(mut values: Vec<Value>) -> ShaderPreset {
     let textures: Vec<TextureConfig> = values

librashader-presets/src/parse/value.rs

@@ -16,6 +16,7 @@ use std::io::Read;
 use std::path::{Path, PathBuf};
 use std::str::FromStr;
 
+use vec_extract_if_polyfill::MakeExtractIf;
 #[derive(Debug)]
 pub enum Value {
     ShaderCount(i32),