IDL compiler: delete Perl compiler, remove unstable/ directory

Source/bindings/scripts/unstable/idl_validator.py

-# Copyright (C) 2013 Google Inc. All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-"""Validate extended attributes."""
-
-
-import re
-
-
-class IDLInvalidExtendedAttributeError(Exception):
-    pass
-
-
-class IDLExtendedAttributeValidator(object):
-    def __init__(self, extended_attributes_filename):
-        self.valid_extended_attributes = read_extended_attributes_file(extended_attributes_filename)
-
-    def validate_extended_attributes(self, definitions):
-        # FIXME: this should be done when parsing the file, rather than after.
-        for interface in definitions.interfaces.itervalues():
-            self.validate_extended_attributes_node(interface)
-            for attribute in interface.attributes:
-                self.validate_extended_attributes_node(attribute)
-            for operation in interface.operations:
-                self.validate_extended_attributes_node(operation)
-                for argument in operation.arguments:
-                    self.validate_extended_attributes_node(argument)
-
-    def validate_extended_attributes_node(self, node):
-        for name, values_string in node.extended_attributes.iteritems():
-            self.validate_name_values_string(name, values_string)
-
-    def validate_name_values_string(self, name, values_string):
-        if name == 'ImplementedBy':  # attribute added when merging interfaces
-            return
-        if name not in self.valid_extended_attributes:
-            raise IDLInvalidExtendedAttributeError('Unknown extended attribute [%s]' % name)
-        valid_values = self.valid_extended_attributes[name]
-        if values_string is None and None not in valid_values:
-            raise IDLInvalidExtendedAttributeError('Missing required argument for extended attribute [%s]' % name)
-        if '*' in valid_values:  # wildcard, any (non-empty) value ok
-            return
-        if values_string is None:
-            values = set([None])
-        else:
-            values = set(re.split('[|&]', values_string))
-        invalid_values = values - valid_values
-        if invalid_values:
-            invalid_value = invalid_values.pop()
-            raise IDLInvalidExtendedAttributeError('Invalid value "%s" found in extended attribute [%s=%s]' % (invalid_value, name, values_string))
-
-
-def read_extended_attributes_file(extended_attributes_filename):
-    def extended_attribute_name_values():
-        with open(extended_attributes_filename) as extended_attributes_file:
-            for line in extended_attributes_file:
-                line = line.strip()
-                if not line or line.startswith('#'):
-                    continue
-                name, _, values_string = map(str.strip, line.partition('='))
-                value_list = [value.strip() for value in values_string.split('|')]
-                yield name, value_list
-
-    valid_extended_attributes = {}
-    for name, value_list in extended_attribute_name_values():
-        if not value_list:
-            valid_extended_attributes[name] = set([None])
-            continue
-        valid_extended_attributes[name] = set([value if value else None
-                                               for value in value_list])
-    return valid_extended_attributes