1 files changed, 131 insertions, 0 deletions
diff --git a/src/etc/generate-deriving-span-tests.py b/src/etc/generate-deriving-span-tests.py
new file mode 100755
index 00000000000..e66b7113a45
--- /dev/null
+++ b/src/etc/generate-deriving-span-tests.py
@@ -0,0 +1,131 @@
+#!/usr/bin/env python
+# xfail-license
+# Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+"""
+This script creates a pile of compile-fail tests check that all the
+derivings have spans that point to the fields, rather than the
+#[deriving(...)] line.
+
+sample usage: src/etc/generate-deriving-span-tests.py
+"""
+
+import sys, os, datetime, stat
+
+TEST_DIR = os.path.abspath(
+    os.path.join(os.path.dirname(__file__), '../test/compile-fail'))
+
+YEAR = datetime.datetime.now().year
+
+TEMPLATE = """// Copyright {year} The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// This file was auto-generated using 'src/etc/generate-keyword-span-tests.py'
+
+#[feature(struct_variant)];
+extern mod extra;
+
+{error_deriving}
+struct Error;
+{code}
+fn main() {{}}
+"""
+
+ENUM_STRING = """
+#[deriving({traits})]
+enum Enum {{
+   A(
+     Error {errors}
+     )
+}}
+"""
+ENUM_STRUCT_VARIANT_STRING = """
+#[deriving({traits})]
+enum Enum {{
+   A {{
+     x: Error {errors}
+   }}
+}}
+"""
+STRUCT_STRING = """
+#[deriving({traits})]
+struct Struct {{
+    x: Error {errors}
+}}
+"""
+STRUCT_TUPLE_STRING = """
+#[deriving({traits})]
+struct Struct(
+    Error {errors}
+);
+"""
+
+ENUM_TUPLE, ENUM_STRUCT, STRUCT_FIELDS, STRUCT_TUPLE = range(4)
+
+def create_test_case(type, trait, super_traits, number_of_errors):
+    string = [ENUM_STRING, ENUM_STRUCT_VARIANT_STRING, STRUCT_STRING, STRUCT_TUPLE_STRING][type]
+    all_traits = ','.join([trait] + super_traits)
+    super_traits = ','.join(super_traits)
+    error_deriving = '#[deriving(%s)]' % super_traits if super_traits else ''
+
+    errors = '\n'.join('//~%s ERROR' % ('^' * n) for n in range(error_count))
+    code = string.format(traits = all_traits, errors = errors)
+    return TEMPLATE.format(year = YEAR, error_deriving=error_deriving, code = code)
+
+def write_file(name, string):
+    test_file = os.path.join(TEST_DIR, 'deriving-span-%s.rs' % name)
+
+    # set write permission if file exists, so it can be changed
+    if os.path.exists(test_file):
+        os.chmod(test_file, stat.S_IWUSR)
+
+    with open(test_file, 'wt') as f:
+        f.write(string)
+
+    # mark file read-only
+    os.chmod(test_file, stat.S_IRUSR|stat.S_IRGRP|stat.S_IROTH)
+
+
+
+ENUM = 1
+STRUCT = 2
+ALL = STRUCT | ENUM
+
+traits = {
+    'Zero': (STRUCT, [], 1),
+    'Default': (STRUCT, [], 1),
+    'FromPrimitive': (0, [], 0), # only works for C-like enums
+
+    'Decodable': (0, [], 0), # FIXME: quoting gives horrible spans
+    'Encodable': (0, [], 0), # FIXME: quoting gives horrible spans
+}
+
+for (trait, supers, errs) in [('Rand', [], 1),
+                              ('Clone', [], 1), ('DeepClone', ['Clone'], 1),
+                              ('Eq', [], 2), ('Ord', [], 8),
+                              ('TotalEq', [], 2), ('TotalOrd', ['TotalEq'], 2)]:
+    traits[trait] = (ALL, supers, errs)
+
+for (trait, (types, super_traits, error_count)) in traits.items():
+    mk = lambda ty: create_test_case(ty, trait, super_traits, error_count)
+    if types & ENUM:
+        write_file(trait + '-enum', mk(ENUM_TUPLE))
+        write_file(trait + '-enum-struct-variant', mk(ENUM_STRUCT))
+    if types & STRUCT:
+        write_file(trait + '-struct', mk(STRUCT_FIELDS))
+        write_file(trait + '-tuple-struct', mk(STRUCT_TUPLE))