1 files changed, 42 insertions, 0 deletions

diff --git a/editors/code/src/scopes_mapper.ts b/editors/code/src/scopes_mapper.ts
new file mode 100644
index 000000000..995adae2d
--- /dev/null
+++ b/editors/code/src/scopes_mapper.ts
@@ -0,0 +1,42 @@
+import * as vscode from 'vscode'
+import { TextMateRuleSettings } from './scopes'
+
+
+
+
+let mappings = new Map<string, string[]>()
+
+
+const defaultMapping = new Map<string, string[]>([
+    ['keyword.unsafe', ['storage.modifier', 'keyword.other', 'keyword.control']],
+    ['function', ['entity.name.function']],
+    ['parameter', ['variable.parameter']],
+    ['type', ['entity.name.type']],
+    ['builtin', ['variable.language', 'support.type', 'support.type']],
+    ['text', ['string', 'string.quoted', 'string.regexp']],
+    ['attribute', ['keyword']],
+    ['literal', ['string', 'string.quoted', 'string.regexp']],
+    ['macro', ['support.other']],
+    ['variable.mut', ['variable']],
+    ['field', ['variable.object.property']],
+    ['module', ['entity.name.section']]
+]
+)
+function find(scope: string): string[] {
+    return mappings.get(scope) || []
+}
+
+export function toRule(scope: string, intoRule: (scope: string) => TextMateRuleSettings | undefined): TextMateRuleSettings | undefined {
+    return find(scope).map(intoRule).find(rule => rule !== null)
+}
+
+
+export function load() {
+    const configuration = vscode.workspace
+        .getConfiguration('rust-analyzer')
+        .get('scopeMappings') as Map<string, string[]> | undefined || new Map()
+
+    mappings = new Map([...Array.from(defaultMapping.entries()), ...Array.from(configuration.entries())]);
+
+
+}
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