zig

commit 01638c250fa270c8cb3b3416ea55e22988cd32a2 (tree)
parent bfff8544e1049fc7aa3310883f619efb3f394948
Author: Andrew Kelley <andrew@ziglang.org>
Date:   Sun, 20 Feb 2022 00:08:05 -0700

Sema: implement readFromMemory for arrays

Diffstat:
M
src/value.zig
 | 
18
+++++++++++++++++-

1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/src/value.zig b/src/value.zig
@@ -1090,7 +1090,12 @@ pub const Value = extern union {
         }
     }
 
-    pub fn readFromMemory(ty: Type, target: Target, buffer: []const u8, arena: Allocator) !Value {
+    pub fn readFromMemory(
+        ty: Type,
+        target: Target,
+        buffer: []const u8,
+        arena: Allocator,
+    ) Allocator.Error!Value {
         switch (ty.zigTypeTag()) {
             .Int => {
                 const int_info = ty.intInfo(target);
@@ -1111,6 +1116,17 @@ pub const Value = extern union {
                 128 => return Value.Tag.float_128.create(arena, floatReadFromMemory(f128, target, buffer)),
                 else => unreachable,
             },
+            .Array => {
+                const elem_ty = ty.childType();
+                const elem_size = elem_ty.abiSize(target);
+                const elems = try arena.alloc(Value, @intCast(usize, ty.arrayLen()));
+                var offset: usize = 0;
+                for (elems) |*elem| {
+                    elem.* = try readFromMemory(elem_ty, target, buffer[offset..], arena);
+                    offset += elem_size;
+                }
+                return Tag.array.create(arena, elems);
+            },
             else => @panic("TODO implement readFromMemory for more types"),
         }
     }