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1235 lines
46 KiB
Python
1235 lines
46 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import os
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import sys
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import subprocess
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import datetime
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import argparse
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import re
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git_repo_path = os.path.abspath(subprocess.check_output(['git', 'rev-parse', '--show-toplevel']).strip())
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def lowerCamlCaseForUnderscoredText(name):
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splits = name.split('_')
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splits = [split.title() for split in splits]
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splits[0] = splits[0].lower()
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return ''.join(splits)
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# The generated code for "Apple Swift Protos" suppresses
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# adjacent capital letters in lowerCamlCase.
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def lowerCamlCaseForUnderscoredText_wrapped(name):
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chars = []
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lastWasUpper = False
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for char in name:
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if lastWasUpper:
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char = char.lower()
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chars.append(char)
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lastWasUpper = (char.upper() == char)
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result = ''.join(chars)
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if result.endswith('Id'):
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result = result[:-2] + 'ID'
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return result
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# Provides conext for writing an indented block surrounded by braces.
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#
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# e.g.
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#
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# with BracedContext('class Foo', writer) as writer:
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# with BracedContext('func bar() -> Bool', writer) as writer:
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# return true
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#
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# Produces:
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#
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# class Foo {
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# func bar() -> Bool {
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# return true
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# }
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# }
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#
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class BracedContext:
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def __init__(self, line, writer):
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self.writer = writer
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writer.add('%s {' % line)
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def __enter__(self):
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self.writer.push_indent()
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return self.writer
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def __exit__(self, *args):
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self.writer.pop_indent()
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self.writer.add('}')
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class WriterContext:
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def __init__(self, proto_name, swift_name, parent=None):
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self.proto_name = proto_name
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self.swift_name = swift_name
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self.parent = parent
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self.name_map = {}
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class LineWriter:
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def __init__(self, args):
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self.contexts = []
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# self.indent = 0
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self.lines = []
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self.args = args
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self.current_indent = 0
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def braced(self, line):
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return BracedContext(line, self)
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def push_indent(self):
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self.current_indent = self.current_indent + 1
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def pop_indent(self):
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self.current_indent = self.current_indent - 1
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if self.current_indent < 0:
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raise Exception('Invalid indentation')
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def all_context_proto_names(self):
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return [context.proto_name for context in self.contexts]
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def current_context(self):
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return self.contexts[-1]
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def indent(self):
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return self.current_indent
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# return len(self.contexts)
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def push_context(self, proto_name, swift_name):
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self.contexts.append(WriterContext(proto_name, swift_name))
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self.push_indent()
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def pop_context(self):
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self.contexts.pop()
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self.pop_indent()
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def add(self, line):
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self.lines.append((' ' * self.indent()) + line)
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def add_raw(self, line):
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self.lines.append(line)
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def extend(self, text):
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for line in text.split('\n'):
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self.add(line)
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def join(self):
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lines = [line.rstrip() for line in self.lines]
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return '\n'.join(lines)
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def rstrip(self):
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lines = self.lines
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while len(lines) > 0 and len(lines[-1].strip()) == 0:
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lines = lines[:-1]
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self.lines = lines
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def newline(self):
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self.add('')
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class BaseContext(object):
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def __init__(self):
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self.parent = None
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self.proto_name = None
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def inherited_proto_names(self):
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if self.parent is None:
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return []
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if self.proto_name is None:
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return []
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return self.parent.inherited_proto_names() + [self.proto_name,]
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def derive_swift_name(self):
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names = self.inherited_proto_names()
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return self.args.wrapper_prefix + ''.join(names)
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def derive_wrapped_swift_name(self):
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names = self.inherited_proto_names()
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return self.args.proto_prefix + '_' + '.'.join(names)
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def children(self):
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return []
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def descendents(self):
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result = []
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for child in self.children():
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result.append(child)
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result.extend(child.descendents())
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return result
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def siblings(self):
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result = []
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if self.parent is not None:
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result = self.parent.children()
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return result
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def ancestors(self):
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result = []
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if self.parent is not None:
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result.append(self.parent)
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result.extend(self.parent.ancestors())
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return result
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def context_for_proto_type(self, field):
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candidates = []
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candidates.extend(self.descendents())
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candidates.extend(self.siblings())
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for ancestor in self.ancestors():
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if ancestor.proto_name is None:
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# Ignore the root context
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continue
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candidates.append(ancestor)
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candidates.extend(ancestor.siblings())
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for candidate in candidates:
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if candidate.proto_name == field.proto_type:
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return candidate
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return None
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def base_swift_type_for_field(self, field):
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if field.proto_type == 'string':
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return 'String'
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elif field.proto_type == 'uint64':
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return 'UInt64'
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elif field.proto_type == 'uint32':
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return 'UInt32'
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elif field.proto_type == 'fixed64':
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return 'UInt64'
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elif field.proto_type == 'bool':
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return 'Bool'
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elif field.proto_type == 'bytes':
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return 'Data'
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else:
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matching_context = self.context_for_proto_type(field)
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if matching_context is not None:
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return matching_context.swift_name
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else:
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# Failure
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return field.proto_type
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def swift_type_for_field(self, field, suppress_optional=False):
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base_type = self.base_swift_type_for_field(field)
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if field.rules == 'optional':
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if suppress_optional:
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return base_type
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can_be_optional = self.can_field_be_optional(field)
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if can_be_optional:
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return '%s?' % base_type
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else:
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return base_type
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elif field.rules == 'required':
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return base_type
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elif field.rules == 'repeated':
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return '[%s]' % base_type
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else:
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raise Exception('Unknown field type')
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def is_field_primitive(self, field):
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return field.proto_type in ('uint64',
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'uint32',
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'fixed64',
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'bool', )
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def can_field_be_optional(self, field):
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if self.is_field_primitive(field):
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return not field.is_required
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# if field.proto_type == 'uint64':
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# return False
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# elif field.proto_type == 'uint32':
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# return False
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# elif field.proto_type == 'fixed64':
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# return False
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# elif field.proto_type == 'bool':
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# return False
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# elif self.is_field_an_enum(field):
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if self.is_field_an_enum(field):
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return False
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else:
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return True
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def is_field_an_enum(self, field):
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matching_context = self.context_for_proto_type(field)
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if matching_context is not None:
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if type(matching_context) is EnumContext:
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return True
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return False
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def is_field_a_proto(self, field):
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matching_context = self.context_for_proto_type(field)
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if matching_context is not None:
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if type(matching_context) is MessageContext:
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return True
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return False
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def default_value_for_field(self, field):
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if field.rules == 'repeated':
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return '[]'
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if field.default_value is not None and len(field.default_value) > 0:
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return field.default_value
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if field.rules == 'optional':
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can_be_optional = self.can_field_be_optional(field)
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if can_be_optional:
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return 'nil'
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if field.proto_type == 'uint64':
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return '0'
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elif field.proto_type == 'uint32':
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return '0'
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elif field.proto_type == 'fixed64':
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return '0'
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elif field.proto_type == 'bool':
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return 'false'
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elif self.is_field_an_enum(field):
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# TODO: Assert that rules is empty.
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enum_context = self.context_for_proto_type(field)
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return enum_context.default_value()
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return None
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class FileContext(BaseContext):
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def __init__(self, args):
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BaseContext.__init__(self)
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self.args = args
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self.messages = []
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self.enums = []
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def children(self):
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return self.enums + self.messages
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def prepare(self):
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for child in self.children():
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child.prepare()
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def generate(self, writer):
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writer.extend('''//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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''')
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writer.extend('''
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// WARNING: This code is generated. Only edit within the markers.
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'''.strip())
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writer.newline()
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writer.invalid_protobuf_error_name = '%sError' % self.args.wrapper_prefix
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writer.extend(('''
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public enum %s: Error {
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case invalidProtobuf(description: String)
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}
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''' % writer.invalid_protobuf_error_name).strip())
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writer.newline()
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for child in self.children():
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child.generate(writer)
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class MessageField:
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def __init__(self, name, index, rules, proto_type, default_value, sort_index, is_required):
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self.name = name
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self.index = index
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self.rules = rules
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self.proto_type = proto_type
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self.default_value = default_value
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self.sort_index = sort_index
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self.is_required = is_required
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def has_accessor_name(self):
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name = 'has' + self.name_swift[0].upper() + self.name_swift[1:]
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if name == 'hasId':
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# TODO: I'm not sure why "Apple Swift Proto" code formats the
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# the name in this way.
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name = 'hasID'
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elif name == 'hasUrl':
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# TODO: I'm not sure why "Apple Swift Proto" code formats the
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# the name in this way.
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name = 'hasURL'
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return name
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class MessageContext(BaseContext):
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def __init__(self, args, parent, proto_name):
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BaseContext.__init__(self)
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self.args = args
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self.parent = parent
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self.proto_name = proto_name
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self.messages = []
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self.enums = []
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self.field_map = {}
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def fields(self):
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fields = self.field_map.values()
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fields = sorted(fields, key=lambda f: f.sort_index)
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return fields
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def field_indices(self):
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return [field.index for field in self.fields()]
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def field_names(self):
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return [field.name for field in self.fields()]
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def children(self):
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return self.enums + self.messages
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def prepare(self):
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self.swift_name = self.derive_swift_name()
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self.swift_builder_name = "%sBuilder" % self.swift_name
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for child in self.children():
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child.prepare()
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def generate(self, writer):
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for child in self.messages:
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child.generate(writer)
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writer.add('// MARK: - %s' % self.swift_name)
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writer.newline()
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writer.add('@objc public class %s: NSObject {' % self.swift_name)
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writer.newline()
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writer.push_context(self.proto_name, self.swift_name)
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for child in self.enums:
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child.generate(writer)
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wrapped_swift_name = self.derive_wrapped_swift_name()
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# Prepare fields
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explict_fields = []
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implict_fields = []
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for field in self.fields():
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field.type_swift = self.swift_type_for_field(field)
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field.type_swift_not_optional = self.swift_type_for_field(field, suppress_optional=True)
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field.name_swift = lowerCamlCaseForUnderscoredText_wrapped(field.name)
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is_explicit = False
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if field.is_required:
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is_explicit = True
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elif self.is_field_a_proto(field):
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is_explicit = True
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if is_explicit:
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explict_fields.append(field)
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else:
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implict_fields.append(field)
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self.generate_builder(writer)
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writer.add('fileprivate let proto: %s' % wrapped_swift_name )
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writer.newline()
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# Property Declarations
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if len(explict_fields) > 0:
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for field in explict_fields:
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type_name = field.type_swift_not_optional if field.is_required else field.type_swift
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writer.add('@objc public let %s: %s' % (field.name_swift, type_name))
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if (not field.is_required) and field.rules != 'repeated' and (not self.is_field_a_proto(field)):
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writer.add('@objc public var %s: Bool {' % field.has_accessor_name() )
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writer.push_indent()
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writer.add('return proto.%s' % field.has_accessor_name() )
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writer.pop_indent()
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writer.add('}')
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writer.newline()
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if len(implict_fields) > 0:
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for field in implict_fields:
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if field.rules == 'optional':
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can_be_optional = (not self.is_field_primitive(field)) and (not self.is_field_an_enum(field))
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if can_be_optional:
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writer.add('@objc public var %s: %s? {' % (field.name_swift, field.type_swift_not_optional))
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writer.push_indent()
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writer.add('guard proto.%s else {' % field.has_accessor_name() )
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writer.push_indent()
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writer.add('return nil')
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writer.pop_indent()
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writer.add('}')
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if self.is_field_an_enum(field):
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enum_context = self.context_for_proto_type(field)
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writer.add('return %s.%sWrap(proto.%s)' % ( enum_context.parent.swift_name, enum_context.swift_name, field.name_swift, ) )
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else:
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writer.add('return proto.%s' % field.name_swift )
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writer.pop_indent()
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writer.add('}')
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else:
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writer.add('@objc public var %s: %s {' % (field.name_swift, field.type_swift_not_optional))
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writer.push_indent()
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if self.is_field_an_enum(field):
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enum_context = self.context_for_proto_type(field)
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writer.add('return %s.%sWrap(proto.%s)' % ( enum_context.parent.swift_name, enum_context.swift_name, field.name_swift, ) )
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else:
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writer.add('return proto.%s' % field.name_swift )
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writer.pop_indent()
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writer.add('}')
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writer.add('@objc public var %s: Bool {' % field.has_accessor_name() )
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writer.push_indent()
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writer.add('return proto.%s' % field.has_accessor_name() )
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writer.pop_indent()
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writer.add('}')
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writer.newline()
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elif field.rules == 'repeated':
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writer.add('@objc public var %s: %s {' % (field.name_swift, field.type_swift_not_optional))
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writer.push_indent()
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writer.add('return proto.%s' % field.name_swift )
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writer.pop_indent()
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writer.add('}')
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writer.newline()
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else:
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writer.add('@objc public var %s: %s {' % (field.name_swift, field.type_swift_not_optional))
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writer.push_indent()
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if self.is_field_an_enum(field):
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enum_context = self.context_for_proto_type(field)
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writer.add('return %sUnwrap(proto.%s)' % ( enum_context.swift_name, field.name_swift, ) )
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else:
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writer.add('return proto.%s' % field.name_swift )
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writer.pop_indent()
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writer.add('}')
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writer.newline()
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|
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# Initializer
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initializer_parameters = []
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initializer_parameters.append('proto: %s' % wrapped_swift_name)
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initializer_prefix = 'private init('
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for field in explict_fields:
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type_name = field.type_swift_not_optional if field.is_required else field.type_swift
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parameter = '%s: %s' % (field.name_swift, type_name)
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parameter = '\n' + ' ' * len(initializer_prefix) + parameter
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initializer_parameters.append(parameter)
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initializer_parameters = ', '.join(initializer_parameters)
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writer.extend('%s%s) {' % ( initializer_prefix, initializer_parameters, ) )
|
|
writer.push_indent()
|
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writer.add('self.proto = proto')
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for field in explict_fields:
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writer.add('self.%s = %s' % (field.name_swift, field.name_swift))
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writer.pop_indent()
|
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writer.add('}')
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writer.newline()
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|
|
# serializedData() func
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writer.extend(('''
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@objc
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public func serializedData() throws -> Data {
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return try self.proto.serializedData()
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}
|
|
''').strip())
|
|
writer.newline()
|
|
|
|
# parseData() func
|
|
writer.add('@objc public class func parseData(_ serializedData: Data) throws -> %s {' % self.swift_name)
|
|
writer.push_indent()
|
|
writer.add('let proto = try %s(serializedData: serializedData)' % ( wrapped_swift_name, ) )
|
|
writer.add('return try parseProto(proto)')
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
# parseData() func
|
|
writer.add('fileprivate class func parseProto(_ proto: %s) throws -> %s {' % ( wrapped_swift_name, self.swift_name, ) )
|
|
writer.push_indent()
|
|
|
|
for field in explict_fields:
|
|
if field.is_required:
|
|
# if self.can_field_be_optional(field):
|
|
writer.add('guard proto.%s else {' % field.has_accessor_name() )
|
|
writer.push_indent()
|
|
writer.add('throw %s.invalidProtobuf(description: "\(logTag) missing required field: %s")' % ( writer.invalid_protobuf_error_name, field.name_swift, ) )
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
|
|
if self.is_field_an_enum(field):
|
|
# TODO: Assert that rules is empty.
|
|
enum_context = self.context_for_proto_type(field)
|
|
writer.add('let %s = %sWrap(proto.%s)' % ( field.name_swift, enum_context.swift_name, field.name_swift, ) )
|
|
elif self.is_field_a_proto(field):
|
|
writer.add('let %s = try %s.parseProto(proto.%s)' % (field.name_swift, self.base_swift_type_for_field(field), field.name_swift)),
|
|
else:
|
|
writer.add('let %s = proto.%s' % ( field.name_swift, field.name_swift, ) )
|
|
writer.newline()
|
|
continue
|
|
|
|
default_value = self.default_value_for_field(field)
|
|
if default_value is None:
|
|
writer.add('var %s: %s' % (field.name_swift, field.type_swift))
|
|
else:
|
|
writer.add('var %s: %s = %s' % (field.name_swift, field.type_swift, default_value))
|
|
|
|
if field.rules == 'repeated':
|
|
if self.is_field_an_enum(field):
|
|
enum_context = self.context_for_proto_type(field)
|
|
writer.add('%s = proto.%s.map { %sWrap($0) }' % ( field.name_swift, field.name_swift, enum_context.swift_name, ) )
|
|
elif self.is_field_a_proto(field):
|
|
writer.add('%s = try proto.%s.map { try %s.parseProto($0) }' % ( field.name_swift, field.name_swift, self.base_swift_type_for_field(field), ) )
|
|
else:
|
|
writer.add('%s = proto.%s' % ( field.name_swift, field.name_swift, ) )
|
|
else:
|
|
writer.add('if proto.%s {' % field.has_accessor_name() )
|
|
writer.push_indent()
|
|
|
|
if self.is_field_an_enum(field):
|
|
# TODO: Assert that rules is empty.
|
|
enum_context = self.context_for_proto_type(field)
|
|
writer.add('%s = %sWrap(proto.%s)' % ( field.name_swift, enum_context.swift_name, field.name_swift, ) )
|
|
elif self.is_field_a_proto(field):
|
|
writer.add('%s = try %s.parseProto(proto.%s)' % (field.name_swift, self.base_swift_type_for_field(field), field.name_swift)),
|
|
else:
|
|
writer.add('%s = proto.%s' % ( field.name_swift, field.name_swift, ) )
|
|
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
writer.add('// MARK: - Begin Validation Logic for %s -' % self.swift_name)
|
|
writer.newline()
|
|
|
|
# Preserve existing validation logic.
|
|
if self.swift_name in args.validation_map:
|
|
validation_block = args.validation_map[self.swift_name]
|
|
if validation_block:
|
|
writer.add_raw(validation_block)
|
|
writer.newline()
|
|
|
|
writer.add('// MARK: - End Validation Logic for %s -' % self.swift_name)
|
|
writer.newline()
|
|
|
|
initializer_prefix = 'let result = %s(' % self.swift_name
|
|
initializer_arguments = []
|
|
initializer_arguments.append('proto: proto')
|
|
for field in explict_fields:
|
|
argument = '%s: %s' % (field.name_swift, field.name_swift)
|
|
argument = '\n' + ' ' * len(initializer_prefix) + argument
|
|
initializer_arguments.append(argument)
|
|
initializer_arguments = ', '.join(initializer_arguments)
|
|
writer.extend('%s%s)' % ( initializer_prefix, initializer_arguments, ) )
|
|
writer.add('return result')
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
# description
|
|
writer.add('@objc public override var debugDescription: String {')
|
|
writer.push_indent()
|
|
writer.add('return "\(proto)"')
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
writer.pop_context()
|
|
|
|
writer.rstrip()
|
|
writer.add('}')
|
|
writer.newline()
|
|
self.generate_debug_extension(writer)
|
|
|
|
def generate_debug_extension(self, writer):
|
|
writer.add('#if DEBUG')
|
|
writer.newline()
|
|
with writer.braced('extension %s' % self.swift_name) as writer:
|
|
with writer.braced('@objc public func serializedDataIgnoringErrors() -> Data?') as writer:
|
|
writer.add('return try! self.serializedData()')
|
|
|
|
writer.newline()
|
|
|
|
with writer.braced('extension %s.%s' % ( self.swift_name, self.swift_builder_name )) as writer:
|
|
with writer.braced('@objc public func buildIgnoringErrors() -> %s?' % self.swift_name) as writer:
|
|
writer.add('return try! self.build()')
|
|
|
|
writer.newline()
|
|
writer.add('#endif')
|
|
writer.newline()
|
|
|
|
def generate_builder(self, writer):
|
|
|
|
wrapped_swift_name = self.derive_wrapped_swift_name()
|
|
|
|
writer.add('// MARK: - %s' % self.swift_builder_name)
|
|
writer.newline()
|
|
|
|
# Required Fields
|
|
required_fields = [field for field in self.fields() if field.is_required]
|
|
required_init_params = []
|
|
required_init_args = []
|
|
if len(required_fields) > 0:
|
|
for field in required_fields:
|
|
if field.rules == 'repeated':
|
|
param_type = '[' + self.base_swift_type_for_field(field) + ']'
|
|
else:
|
|
param_type = self.base_swift_type_for_field(field)
|
|
required_init_params.append('%s: %s' % ( field.name_swift, param_type) )
|
|
required_init_args.append('%s: %s' % ( field.name_swift, field.name_swift) )
|
|
|
|
# Convenience accessor.
|
|
with writer.braced('@objc public class func builder(%s) -> %s' % (
|
|
', '.join(required_init_params),
|
|
self.swift_builder_name,
|
|
)) as writer:
|
|
writer.add('return %s(%s)' % (self.swift_builder_name, ', '.join(required_init_args), ))
|
|
writer.newline()
|
|
|
|
# asBuilder()
|
|
writer.add('// asBuilder() constructs a builder that reflects the proto\'s contents.')
|
|
with writer.braced('@objc public func asBuilder() -> %s' % (
|
|
self.swift_builder_name,
|
|
)) as writer:
|
|
writer.add('let builder = %s(%s)' % (self.swift_builder_name, ', '.join(required_init_args), ))
|
|
|
|
for field in self.fields():
|
|
if field.is_required:
|
|
continue
|
|
|
|
accessor_name = field.name_swift
|
|
accessor_name = 'set' + accessor_name[0].upper() + accessor_name[1:]
|
|
|
|
can_be_optional = (not self.is_field_primitive(field)) and (not self.is_field_an_enum(field))
|
|
if field.rules == 'repeated':
|
|
writer.add('builder.%s(%s)' % ( accessor_name, field.name_swift, ))
|
|
elif can_be_optional:
|
|
writer.add('if let _value = %s {' % field.name_swift )
|
|
writer.push_indent()
|
|
writer.add('builder.%s(_value)' % ( accessor_name, ))
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
else:
|
|
writer.add('if %s {' % field.has_accessor_name() )
|
|
writer.push_indent()
|
|
writer.add('builder.%s(%s)' % ( accessor_name, field.name_swift, ))
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
|
|
writer.add('return builder')
|
|
writer.newline()
|
|
|
|
writer.add('@objc public class %s: NSObject {' % self.swift_builder_name)
|
|
writer.newline()
|
|
|
|
writer.push_context(self.proto_name, self.swift_name)
|
|
|
|
writer.add('private var proto = %s()' % wrapped_swift_name)
|
|
writer.newline()
|
|
|
|
# Initializer
|
|
writer.add('@objc fileprivate override init() {}')
|
|
writer.newline()
|
|
|
|
# Required-Field Initializer
|
|
if len(required_fields) > 0:
|
|
# writer.add('// Initializer for required fields')
|
|
writer.add('@objc fileprivate init(%s) {' % ', '.join(required_init_params))
|
|
writer.push_indent()
|
|
writer.add('super.init()')
|
|
writer.newline()
|
|
for field in required_fields:
|
|
accessor_name = field.name_swift
|
|
accessor_name = 'set' + accessor_name[0].upper() + accessor_name[1:]
|
|
writer.add('%s(%s)' % ( accessor_name, field.name_swift, ) )
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
# Setters
|
|
for field in self.fields():
|
|
if field.rules == 'repeated':
|
|
# Add
|
|
accessor_name = field.name_swift
|
|
accessor_name = 'add' + accessor_name[0].upper() + accessor_name[1:]
|
|
writer.add('@objc public func %s(_ valueParam: %s) {' % ( accessor_name, self.base_swift_type_for_field(field), ))
|
|
writer.push_indent()
|
|
writer.add('var items = proto.%s' % ( field.name_swift, ) )
|
|
|
|
if self.is_field_an_enum(field):
|
|
enum_context = self.context_for_proto_type(field)
|
|
writer.add('items.append(%sUnwrap(valueParam))' % enum_context.swift_name )
|
|
elif self.is_field_a_proto(field):
|
|
writer.add('items.append(valueParam.proto)')
|
|
else:
|
|
writer.add('items.append(valueParam)')
|
|
writer.add('proto.%s = items' % ( field.name_swift, ) )
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
# Set
|
|
accessor_name = field.name_swift
|
|
accessor_name = 'set' + accessor_name[0].upper() + accessor_name[1:]
|
|
writer.add('@objc public func %s(_ wrappedItems: [%s]) {' % ( accessor_name, self.base_swift_type_for_field(field), ))
|
|
writer.push_indent()
|
|
if self.is_field_an_enum(field):
|
|
enum_context = self.context_for_proto_type(field)
|
|
writer.add('proto.%s = wrappedItems.map { %sUnwrap($0) }' % ( field.name_swift, enum_context.swift_name, ) )
|
|
elif self.is_field_a_proto(field):
|
|
writer.add('proto.%s = wrappedItems.map { $0.proto }' % ( field.name_swift, ) )
|
|
else:
|
|
writer.add('proto.%s = wrappedItems' % ( field.name_swift, ) )
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
else:
|
|
accessor_name = field.name_swift
|
|
accessor_name = 'set' + accessor_name[0].upper() + accessor_name[1:]
|
|
writer.add('@objc public func %s(_ valueParam: %s) {' % ( accessor_name, self.base_swift_type_for_field(field), ))
|
|
writer.push_indent()
|
|
|
|
if self.is_field_an_enum(field):
|
|
enum_context = self.context_for_proto_type(field)
|
|
writer.add('proto.%s = %sUnwrap(valueParam)' % ( field.name_swift, enum_context.swift_name, ) )
|
|
elif self.is_field_a_proto(field):
|
|
writer.add('proto.%s = valueParam.proto' % ( field.name_swift, ) )
|
|
else:
|
|
writer.add('proto.%s = valueParam' % ( field.name_swift, ) )
|
|
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
# build() func
|
|
writer.add('@objc public func build() throws -> %s {' % self.swift_name)
|
|
writer.push_indent()
|
|
writer.add('return try %s.parseProto(proto)' % self.swift_name)
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
# buildSerializedData() func
|
|
writer.add('@objc public func buildSerializedData() throws -> Data {')
|
|
writer.push_indent()
|
|
writer.add('return try %s.parseProto(proto).serializedData()' % self.swift_name)
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
# description
|
|
if self.args.add_description:
|
|
writer.add('@objc public override var description: String {')
|
|
writer.push_indent()
|
|
writer.add('var fields = [String]()')
|
|
for field in self.fields():
|
|
writer.add('fields.append("%s: \(proto.%s)")' % ( field.name_swift, field.name_swift, ) )
|
|
writer.add('return "[" + fields.joined(separator: ", ") + "]"')
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
writer.pop_context()
|
|
|
|
writer.rstrip()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
class EnumContext(BaseContext):
|
|
def __init__(self, args, parent, proto_name):
|
|
BaseContext.__init__(self)
|
|
|
|
self.args = args
|
|
self.parent = parent
|
|
self.proto_name = proto_name
|
|
|
|
# self.item_names = set()
|
|
# self.item_indices = set()
|
|
self.item_map = {}
|
|
|
|
def derive_wrapped_swift_name(self):
|
|
# return BaseContext.derive_wrapped_swift_name(self) + 'Enum'
|
|
result = BaseContext.derive_wrapped_swift_name(self)
|
|
if self.proto_name == 'Type':
|
|
result = result + 'Enum'
|
|
return result
|
|
|
|
def item_names(self):
|
|
return self.item_map.values()
|
|
|
|
def item_indices(self):
|
|
return self.item_map.keys()
|
|
|
|
def prepare(self):
|
|
self.swift_name = self.derive_swift_name()
|
|
|
|
for child in self.children():
|
|
child.prepare()
|
|
|
|
def case_pairs(self):
|
|
indices = [int(index) for index in self.item_indices()]
|
|
indices = sorted(indices)
|
|
result = []
|
|
for index in indices:
|
|
index_str = str(index)
|
|
item_name = self.item_map[index_str]
|
|
case_name = lowerCamlCaseForUnderscoredText(item_name)
|
|
result.append( (case_name, index_str,) )
|
|
return result
|
|
|
|
def default_value(self):
|
|
for case_name, case_index in self.case_pairs():
|
|
return '.' + case_name
|
|
|
|
def generate(self, writer):
|
|
|
|
writer.add('// MARK: - %s' % self.swift_name)
|
|
writer.newline()
|
|
|
|
writer.add('@objc public enum %s: Int32 {' % self.swift_name)
|
|
|
|
writer.push_context(self.proto_name, self.swift_name)
|
|
|
|
for case_name, case_index in self.case_pairs():
|
|
if case_name == 'default':
|
|
case_name = '`default`'
|
|
writer.add('case %s = %s' % (case_name, case_index,))
|
|
|
|
writer.pop_context()
|
|
|
|
writer.rstrip()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
wrapped_swift_name = self.derive_wrapped_swift_name()
|
|
writer.add('private class func %sWrap(_ value: %s) -> %s {' % ( self.swift_name, wrapped_swift_name, self.swift_name, ) )
|
|
writer.push_indent()
|
|
writer.add('switch value {')
|
|
for case_name, case_index in self.case_pairs():
|
|
writer.add('case .%s: return .%s' % (case_name, case_name,))
|
|
writer.add('}')
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
writer.add('private class func %sUnwrap(_ value: %s) -> %s {' % ( self.swift_name, self.swift_name, wrapped_swift_name, ) )
|
|
writer.push_indent()
|
|
writer.add('switch value {')
|
|
for case_name, case_index in self.case_pairs():
|
|
writer.add('case .%s: return .%s' % (case_name, case_name,))
|
|
writer.add('}')
|
|
writer.pop_indent()
|
|
writer.add('}')
|
|
writer.newline()
|
|
|
|
|
|
class LineParser:
|
|
def __init__(self, text):
|
|
self.lines = text.split('\n')
|
|
self.lines.reverse()
|
|
self.next_line_comments = []
|
|
|
|
def next(self):
|
|
# lineParser = LineParser(text.split('\n'))
|
|
|
|
self.next_line_comments = []
|
|
while len(self.lines) > 0:
|
|
line = self.lines.pop()
|
|
line = line.strip()
|
|
# if not line:
|
|
# continue
|
|
|
|
comment_index = line.find('//')
|
|
if comment_index >= 0:
|
|
comment = line[comment_index + len('//'):].strip()
|
|
line = line[:comment_index].strip()
|
|
if not line:
|
|
if comment:
|
|
self.next_line_comments.append(comment)
|
|
else:
|
|
if not line:
|
|
self.next_line_comments = []
|
|
|
|
if not line:
|
|
continue
|
|
|
|
# if args.verbose:
|
|
# print 'line:', line
|
|
|
|
return line
|
|
raise StopIteration()
|
|
|
|
|
|
def parse_enum(args, proto_file_path, parser, parent_context, enum_name):
|
|
|
|
# if args.verbose:
|
|
# print '# enum:', enum_name
|
|
|
|
context = EnumContext(args, parent_context, enum_name)
|
|
|
|
while True:
|
|
try:
|
|
line = parser.next()
|
|
except StopIteration:
|
|
raise Exception('Incomplete enum: %s' % proto_file_path)
|
|
|
|
if line == '}':
|
|
# if args.verbose:
|
|
# print
|
|
parent_context.enums.append(context)
|
|
return
|
|
|
|
item_regex = re.compile(r'^(.+?)\s*=\s*(\d+?)\s*;$')
|
|
item_match = item_regex.search(line)
|
|
if item_match:
|
|
item_name = item_match.group(1).strip()
|
|
item_index = item_match.group(2).strip()
|
|
|
|
# if args.verbose:
|
|
# print '\t enum item[%s]: %s' % (item_index, item_name)
|
|
|
|
if item_name in context.item_names():
|
|
raise Exception('Duplicate enum name[%s]: %s' % (proto_file_path, item_name))
|
|
|
|
if item_index in context.item_indices():
|
|
raise Exception('Duplicate enum index[%s]: %s' % (proto_file_path, item_name))
|
|
|
|
context.item_map[item_index] = item_name
|
|
|
|
continue
|
|
|
|
raise Exception('Invalid enum syntax[%s]: %s' % (proto_file_path, line))
|
|
|
|
|
|
def optional_match_group(match, index):
|
|
group = match.group(index)
|
|
if group is None:
|
|
return None
|
|
return group.strip()
|
|
|
|
|
|
def parse_message(args, proto_file_path, parser, parent_context, message_name):
|
|
|
|
# if args.verbose:
|
|
# print '# message:', message_name
|
|
|
|
context = MessageContext(args, parent_context, message_name)
|
|
|
|
sort_index = 0
|
|
while True:
|
|
try:
|
|
line = parser.next()
|
|
except StopIteration:
|
|
raise Exception('Incomplete message: %s' % proto_file_path)
|
|
|
|
field_comments = parser.next_line_comments
|
|
|
|
if line == '}':
|
|
# if args.verbose:
|
|
# print
|
|
parent_context.messages.append(context)
|
|
return
|
|
|
|
enum_regex = re.compile(r'^enum\s+(.+?)\s+\{$')
|
|
enum_match = enum_regex.search(line)
|
|
if enum_match:
|
|
enum_name = enum_match.group(1).strip()
|
|
parse_enum(args, proto_file_path, parser, context, enum_name)
|
|
continue
|
|
|
|
message_regex = re.compile(r'^message\s+(.+?)\s+\{$')
|
|
message_match = message_regex.search(line)
|
|
if message_match:
|
|
message_name = message_match.group(1).strip()
|
|
parse_message(args, proto_file_path, parser, context, message_name)
|
|
continue
|
|
|
|
# Examples:
|
|
#
|
|
# optional bytes id = 1;
|
|
# optional bool isComplete = 2 [default = false];
|
|
item_regex = re.compile(r'^(optional|required|repeated)?\s*([\w\d]+?)\s+([\w\d]+?)\s*=\s*(\d+?)\s*(\[default = (true|false)\])?;$')
|
|
item_match = item_regex.search(line)
|
|
if item_match:
|
|
# print 'item_rules:', item_match.groups()
|
|
item_rules = optional_match_group(item_match, 1)
|
|
item_type = optional_match_group(item_match, 2)
|
|
item_name = optional_match_group(item_match, 3)
|
|
item_index = optional_match_group(item_match, 4)
|
|
# item_defaults_1 = optional_match_group(item_match, 5)
|
|
item_default = optional_match_group(item_match, 6)
|
|
|
|
# print 'item_rules:', item_rules
|
|
# print 'item_type:', item_type
|
|
# print 'item_name:', item_name
|
|
# print 'item_index:', item_index
|
|
# print 'item_default:', item_default
|
|
|
|
message_field = {
|
|
'rules': item_rules,
|
|
'type': item_type,
|
|
'name': item_name,
|
|
'index': item_index,
|
|
'default': item_default,
|
|
'field_comments': field_comments,
|
|
}
|
|
# print 'message_field:', message_field
|
|
|
|
# if args.verbose:
|
|
# print '\t message field[%s]: %s' % (item_index, str(message_field))
|
|
|
|
if item_name in context.field_names():
|
|
raise Exception('Duplicate message field name[%s]: %s' % (proto_file_path, item_name))
|
|
# context.field_names.add(item_name)
|
|
|
|
if item_index in context.field_indices():
|
|
raise Exception('Duplicate message field index[%s]: %s' % (proto_file_path, item_name))
|
|
# context.field_indices.add(item_index)
|
|
|
|
is_required = '@required' in field_comments
|
|
# if is_required:
|
|
# print 'is_required:', item_name
|
|
context.field_map[item_index] = MessageField(item_name, item_index, item_rules, item_type, item_default, sort_index, is_required)
|
|
|
|
sort_index = sort_index + 1
|
|
|
|
continue
|
|
|
|
raise Exception('Invalid message syntax[%s]: %s' % (proto_file_path, line))
|
|
|
|
|
|
def preserve_validation_logic(args, proto_file_path, dst_file_path):
|
|
args.validation_map = {}
|
|
if os.path.exists(dst_file_path):
|
|
with open(dst_file_path, 'rt') as f:
|
|
old_text = f.read()
|
|
validation_start_regex = re.compile(r'// MARK: - Begin Validation Logic for ([^ ]+) -')
|
|
for match in validation_start_regex.finditer(old_text):
|
|
# print 'match'
|
|
name = match.group(1)
|
|
# print '\t name:', name
|
|
start = match.end(0)
|
|
# print '\t start:', start
|
|
end_marker = '// MARK: - End Validation Logic for %s -' % name
|
|
end = old_text.find(end_marker)
|
|
# print '\t end:', end
|
|
if end < start:
|
|
raise Exception('Malformed validation: %s, %s' % ( proto_file_path, name, ) )
|
|
validation_block = old_text[start:end]
|
|
# print '\t validation_block:', validation_block
|
|
|
|
# Strip trailing whitespace.
|
|
validation_lines = validation_block.split('\n')
|
|
validation_lines = [line.rstrip() for line in validation_lines]
|
|
# Strip leading empty lines.
|
|
while len(validation_lines) > 0 and validation_lines[0] == '':
|
|
validation_lines = validation_lines[1:]
|
|
# Strip trailing empty lines.
|
|
while len(validation_lines) > 0 and validation_lines[-1] == '':
|
|
validation_lines = validation_lines[:-1]
|
|
validation_block = '\n'.join(validation_lines)
|
|
|
|
if len(validation_block) > 0:
|
|
if args.verbose:
|
|
print('Preserving validation logic for:', name)
|
|
|
|
args.validation_map[name] = validation_block
|
|
|
|
|
|
def process_proto_file(args, proto_file_path, dst_file_path):
|
|
with open(proto_file_path, 'rt') as f:
|
|
text = f.read()
|
|
|
|
multiline_comment_regex = re.compile(r'/\*.*?\*/', re.MULTILINE|re.DOTALL)
|
|
text = multiline_comment_regex.sub('', text)
|
|
|
|
syntax_regex = re.compile(r'^syntax ')
|
|
package_regex = re.compile(r'^package\s+(.+);')
|
|
option_regex = re.compile(r'^option ')
|
|
|
|
parser = LineParser(text)
|
|
|
|
# lineParser = LineParser(text.split('\n'))
|
|
|
|
context = FileContext(args)
|
|
|
|
while True:
|
|
try:
|
|
line = parser.next()
|
|
except StopIteration:
|
|
break
|
|
|
|
if syntax_regex.search(line):
|
|
if args.verbose:
|
|
print('# Ignoring syntax')
|
|
continue
|
|
|
|
if option_regex.search(line):
|
|
if args.verbose:
|
|
print('# Ignoring option')
|
|
continue
|
|
|
|
package_match = package_regex.search(line)
|
|
if package_match:
|
|
if args.package:
|
|
raise Exception('More than one package statement: %s' % proto_file_path)
|
|
args.package = package_match.group(1).strip()
|
|
|
|
if args.verbose:
|
|
print('# package:', args.package)
|
|
continue
|
|
|
|
message_regex = re.compile(r'^message\s+(.+?)\s+\{$')
|
|
message_match = message_regex.search(line)
|
|
if message_match:
|
|
message_name = message_match.group(1).strip()
|
|
parse_message(args, proto_file_path, parser, context, message_name)
|
|
continue
|
|
|
|
raise Exception('Invalid syntax[%s]: %s' % (proto_file_path, line))
|
|
|
|
preserve_validation_logic(args, proto_file_path, dst_file_path)
|
|
|
|
writer = LineWriter(args)
|
|
context.prepare()
|
|
context.generate(writer)
|
|
output = writer.join()
|
|
with open(dst_file_path, 'wt') as f:
|
|
f.write(output)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
|
|
parser = argparse.ArgumentParser(description='Protocol Buffer Swift Wrapper Generator.')
|
|
# parser.add_argument('--all', action='store_true', help='process all files in or below current dir')
|
|
# parser.add_argument('--path', help='used to specify a path to a file.')
|
|
parser.add_argument('--proto-dir', help='dir path of the proto schema file.')
|
|
parser.add_argument('--proto-file', help='filename of the proto schema file.')
|
|
parser.add_argument('--wrapper-prefix', help='name prefix for generated wrappers.')
|
|
parser.add_argument('--proto-prefix', help='name prefix for proto bufs.')
|
|
parser.add_argument('--dst-dir', help='path to the destination directory.')
|
|
parser.add_argument('--add-log-tag', action='store_true', help='add log tag properties.')
|
|
parser.add_argument('--add-description', action='store_true', help='add log tag properties.')
|
|
parser.add_argument('--verbose', action='store_true', help='enables verbose logging')
|
|
args = parser.parse_args()
|
|
|
|
if args.verbose:
|
|
print('args:', args)
|
|
|
|
proto_file_path = os.path.abspath(os.path.join(args.proto_dir, args.proto_file))
|
|
if not os.path.exists(proto_file_path):
|
|
raise Exception('File does not exist: %s' % proto_file_path)
|
|
|
|
dst_dir_path = os.path.abspath(args.dst_dir)
|
|
if not os.path.exists(dst_dir_path):
|
|
raise Exception('Destination does not exist: %s' % dst_dir_path)
|
|
|
|
dst_file_path = os.path.join(dst_dir_path, "%s.swift" % args.wrapper_prefix)
|
|
|
|
if args.verbose:
|
|
print('dst_file_path:', dst_file_path)
|
|
|
|
args.package = None
|
|
process_proto_file(args, proto_file_path, dst_file_path)
|
|
|
|
# print 'complete.'
|
|
|