transTypeDef

fn transTypeDef(t: *Translator, scope: *Scope, typedef_node: Node.Index) Error!void

File

Code

fn transTypeDef(t: *Translator, scope: *Scope, typedef_node: Node.Index) Error!void {
    const typedef_decl = typedef_node.get(t.tree).typedef;
    if (t.type_decls.get(typedef_node)) |_|
        return; // Avoid processing this decl twice

    const toplevel = scope.id == .root;
    const bs: *Scope.Block = if (!toplevel) try scope.findBlockScope(t) else undefined;

    var name: []const u8 = t.tree.tokSlice(typedef_decl.name_tok);
    try t.typedefs.put(t.gpa, name, {});

    if (builtin_typedef_map.get(name)) |builtin| {
        return t.type_decls.putNoClobber(t.gpa, typedef_node, builtin);
    }
    if (!toplevel) name = try bs.makeMangledName(name);
    try t.type_decls.putNoClobber(t.gpa, typedef_node, name);

    const typedef_loc = typedef_decl.name_tok;
    const init_node = t.transType(scope, typedef_decl.qt, typedef_loc) catch |err| switch (err) {
        error.UnsupportedType => {
            return t.failDecl(scope, typedef_loc, name, "unable to resolve typedef child type", .{});
        },
        error.OutOfMemory => |e| return e,
    };

    const payload = try t.arena.create(ast.Payload.SimpleVarDecl);
    payload.* = .{
        .base = .{ .tag = if (toplevel) .pub_var_simple else .var_simple },
        .data = .{
            .name = name,
            .init = init_node,
        },
    };
    const node = ZigNode.initPayload(&payload.base);

    if (toplevel) {
        try t.addTopLevelDecl(name, node);
    } else {
        try scope.appendNode(node);
        try bs.discardVariable(name);
    }
}