feat(psl): provide default "FeatureMapWithProvider" implementation fo…

…r prisma/language-tools

psl/psl-core/src/common.rs

@@ -2,4 +2,4 @@
 
 mod preview_features;
 
-pub use self::preview_features::{FeatureMapWithProvider, PreviewFeature, PreviewFeatures};
+pub use self::preview_features::{FeatureMapWithProvider, PreviewFeature, PreviewFeatures, ALL_PREVIEW_FEATURES};

psl/psl-core/src/common/preview_features.rs

@@ -86,7 +86,7 @@ features!(
 );
 
 /// Generator preview features (alphabetically sorted)
-const ALL_PREVIEW_FEATURES: FeatureMap = FeatureMap {
+const PREVIEW_FEATURES: FeatureMap = FeatureMap {
     active: enumflags2::make_bitflags!(PreviewFeature::{
         Deno
          | DriverAdapters
@@ -152,16 +152,22 @@ pub struct FeatureMap {
     hidden: PreviewFeatures,
 }
 
+#[derive(Debug)]
 pub struct FeatureMapWithProvider<'a> {
     provider: &'a str,
     feature_map: FeatureMap,
 }
 
+/// The default feature map with an unknown provider.
+/// This is used for convenience in `prisma/language-tools`, which needs the list of all available preview features
+/// before a provider is necessarily known.
+pub const ALL_PREVIEW_FEATURES: FeatureMapWithProvider<'static> = FeatureMapWithProvider::new("<default>");
+
 impl<'a> FeatureMapWithProvider<'a> {
-    pub fn new(connector_provider: &'a str) -> FeatureMapWithProvider<'a> {
+    pub const fn new(connector_provider: &'a str) -> FeatureMapWithProvider<'a> {
         Self {
             provider: connector_provider,
-            feature_map: ALL_PREVIEW_FEATURES,
+            feature_map: PREVIEW_FEATURES,
         }
     }
 

psl/psl-core/src/lib.rs

@@ -18,7 +18,7 @@ mod validate;
 use std::sync::Arc;
 
 pub use crate::{
-    common::{FeatureMapWithProvider, PreviewFeature, PreviewFeatures},
+    common::{FeatureMapWithProvider, PreviewFeature, PreviewFeatures, ALL_PREVIEW_FEATURES},
     configuration::{
         Configuration, Datasource, DatasourceConnectorData, Generator, GeneratorConfigValue, StringFromEnvVar,
     },

psl/psl/src/lib.rs

@@ -27,6 +27,7 @@ pub use psl_core::{
     PreviewFeatures,
     StringFromEnvVar,
     ValidatedSchema,
+    ALL_PREVIEW_FEATURES,
 };
 
 /// The implementation of the CLI getConfig() utility and its JSON format.