comptime expandable match statements

2026-07-17 14:29:50 +02:00
parent 1f25e6cd1d
commit 97f1c06057
22 changed files with 120821 additions and 119318 deletions
@@ -279,7 +279,7 @@ choose func() i32 {
            (identifier)))))))

 ==================
-Tuples and inline for
+Tuples and expand for
 ==================

 Pair :: struct { i32, []u8 }
@@ -289,7 +289,7 @@ main func() void {
 	singleton :: {1,}
 	empty :: {}
 	_ = pair.0
-	inline for singleton |value| {
+	expand for singleton |value| {
 		_ = value
 	}
 }
@@ -365,3 +365,108 @@ main func() void {
                  (sink))
                (expression
                  (identifier))))))))))
+
+==================
+Expanded match arms
+==================
+
+Kind :: enum { one, two }
+Value :: union(enum) { number i32, empty void }
+
+test func(kind Kind, value Value) void {
+	match kind {
+		.one: {}
+		expand |tag|: _ = tag
+	}
+	match value {
+		expand |@payload, tag|: {
+			_ = payload
+			_ = tag
+		}
+	}
+}
+
+---
+
+(source_file
+  (type_declaration
+    (identifier)
+    (enum_type
+      (enum_body
+        (enum_member
+          (identifier))
+        (enum_member
+          (identifier)))))
+  (type_declaration
+    (identifier)
+    (union_type
+      (record_body
+        (record_field
+          (identifier)
+          (type
+            (builtin_type)))
+        (record_field
+          (identifier)
+          (type
+            (builtin_type))))))
+  (function_declaration
+    (identifier)
+    (parameter_list
+      (parameter
+        (identifier)
+        (type
+          (named_type
+            (qualified_identifier
+              (identifier)))))
+      (parameter
+        (identifier)
+        (type
+          (named_type
+            (qualified_identifier
+              (identifier))))))
+    (type
+      (builtin_type))
+    (block
+      (statement
+        (match_statement
+          (expression
+            (identifier))
+          (match_arm
+            (expression
+              (enum_literal
+                (identifier)))
+            (statement
+              (expression_statement
+                (expression
+                  (tuple_literal)))))
+          (match_arm
+            (expand_match_capture
+              (identifier))
+            (statement
+              (assignment_statement
+                (expression
+                  (sink))
+                (expression
+                  (identifier)))))))
+      (statement
+        (match_statement
+          (expression
+            (identifier))
+          (match_arm
+            (expand_match_capture
+              (identifier)
+              (identifier))
+            (statement
+              (block
+                (statement
+                  (assignment_statement
+                    (expression
+                      (sink))
+                    (expression
+                      (identifier))))
+                (statement
+                  (assignment_statement
+                    (expression
+                      (sink))
+                    (expression
+                      (identifier))))))))))))