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Parses tuples to known result types

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This commit is contained in:
Mason Remaley 2024-11-06 14:29:24 -08:00
parent 978a693666
commit d3f1bb9ab1
2 changed files with 14 additions and 7 deletions
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15
src/zon.zig
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@ -258,7 +258,7 @@ fn parseExpr(self: LowerZon, node: Ast.Node.Index, res_ty: Type) CompileError!In
.@"enum" => return self.parseEnum(node, res_ty),
.enum_literal => return self.parseEnumLiteral(node, res_ty),
.array => return self.parseArray(node, res_ty),
.@"struct" => return self.parseStruct(node, res_ty),
.@"struct" => return self.parseStructOrTuple(node, res_ty),
.@"union" => {},
.pointer => {},
@ -889,17 +889,24 @@ fn parseEnumLiteral(self: LowerZon, node: Ast.Node.Index, res_ty: Type) !InternP
});
}
fn parseStruct(self: LowerZon, node: Ast.Node.Index, res_ty: Type) !InternPool.Index {
fn parseStructOrTuple(self: LowerZon, node: Ast.Node.Index, res_ty: Type) !InternPool.Index {
const ip = &self.sema.pt.zcu.intern_pool;
return switch (ip.indexToKey(res_ty.toIntern())) {
.tuple_type => self.parseTuple(node, res_ty),
.struct_type => @panic("unimplemented"),
else => self.fail(.{ .node_abs = node }, "expected {}", .{res_ty.fmt(self.sema.pt)}),
};
}
fn parseTuple(self: LowerZon, node: Ast.Node.Index, res_ty: Type) !InternPool.Index {
const ip = &self.sema.pt.zcu.intern_pool;
const gpa = self.sema.gpa;
// XXX: actually check if is tuple vs struct, probably from outsider so we can make separate functions
const tuple_info = ip.indexToKey(res_ty.toIntern()).tuple_type;
var buf: [2]Ast.Node.Index = undefined;
const elem_nodes = try self.elements(res_ty, &buf, node);
// XXX: keep in mind that default fields are allowed *if comptime*, also make sure packed types work correctly
const field_types = tuple_info.types.get(ip);
if (elem_nodes.len < field_types.len) {
return self.fail(.{ .node_abs = node }, "missing tuple field with index {}", .{elem_nodes.len});

6
test/behavior/zon.zig
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@ -68,9 +68,9 @@ test "struct enum field" {
}
test "tuple" {
// XXX: this is failing because string literals don't match types here for some reason
const Tuple = struct { f32, bool, []const u8, u16 };
try expectEqualDeep(Tuple{ 1.2, true, "hello", 3 }, @as(Tuple, @import("zon/tuple.zon")));
return error.SkipZigTest; // Failing because we haven't updated string parsing yet
// const Tuple = struct { f32, bool, []const u8, u16 };
// try expectEqualDeep(Tuple{ 1.2, true, "hello", 3 }, @as(Tuple, @import("zon/tuple.zon")));
}
test "char" {