authorgravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2021-04-02 21:17:23-07:00
committergravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2021-04-02 21:17:23-07:00
log2f07d76eee37442f53c294f53b38b11dfb1cd4da
tree88e02f45de5dc196ef26ce72cf19d68ea187bbde
parentd47f0abd5b5ba95bacd2d573aeabcc53db8c8fc3

stage2: implement Type.onePossibleValue for structs

2 files changed, 18 insertions(+), 2 deletions(-)

src/type.zig+8-2
...@@ -3118,8 +3118,14 @@ pub const Type = extern union {...@@ -3118,8 +3118,14 @@ pub const Type = extern union {
3118 => return null,3118 => return null,
31193119
3120 .@"struct" => {3120 .@"struct" => {
3121 log.warn("TODO implement Type.onePossibleValue for structs", .{});3121 const s = ty.castTag(.@"struct").?.data;
3122 return null;3122 for (s.fields.entries.items) |entry| {
3123 const field_ty = entry.value.ty;
3124 if (field_ty.onePossibleValue() == null) {
3125 return null;
3126 }
3127 }
3128 return Value.initTag(.empty_struct_value);
3123 },3129 },
31243130
3125 .empty_struct, .empty_struct_literal => return Value.initTag(.empty_struct_value),3131 .empty_struct, .empty_struct_literal => return Value.initTag(.empty_struct_value),
test/stage2/cbe.zig+10
...@@ -524,6 +524,16 @@ pub fn addCases(ctx: *TestContext) !void {...@@ -524,6 +524,16 @@ pub fn addCases(ctx: *TestContext) !void {
524 ":6:10: error: no field named 'z' in struct 'Point'",524 ":6:10: error: no field named 'z' in struct 'Point'",
525 ":1:15: note: 'Point' declared here",525 ":1:15: note: 'Point' declared here",
526 });526 });
527 case.addCompareOutput(
528 \\const Point = struct { x: i32, y: i32 };
529 \\export fn main() c_int {
530 \\ var p: Point = .{
531 \\ .x = 12,
532 \\ .y = 24,
533 \\ };
534 \\ return p.y - p.x - p.x;
535 \\}
536 , "");
527 }537 }
528538
529 ctx.c("empty start function", linux_x64,539 ctx.c("empty start function", linux_x64,