220 lines
7.6 KiB
Python
Executable File
220 lines
7.6 KiB
Python
Executable File
#!/usr/bin/env python
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from operator import attrgetter
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from optparse import OptionParser
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import re
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import sys
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def simplerepr(obj):
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keys = sorted(key for key in obj.__dict__.keys() if not key.startswith('_'))
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attrs = ''.join(' %s=%r' % (key, obj.__dict__[key]) for key in keys)
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return '<%s%s>' % (obj.__class__.__name__, attrs)
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class Exportable(object):
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def __init__(self, name):
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self.name = name
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__repr__ = simplerepr
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def export(self):
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return ''
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def extern(self):
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return ''
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def typedef(self):
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return ''
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class ObjectLiteral(Exportable):
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def __init__(self, name, objects):
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Exportable.__init__(self, name)
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self.prop_types = {}
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self.objects = objects
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__repr__ = simplerepr
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def extern(self):
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lines = []
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lines.append('\n\n\n')
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lines.append('/**\n')
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lines.append(' * @interface\n')
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lines.append(' */\n')
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lines.append('%s = function() {};\n' % (self.extern_name(),))
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for prop in sorted(self.prop_types.keys()):
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lines.append('\n\n')
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lines.append('/**\n')
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prop_types = self.prop_types[prop].split('|')
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for i, t in enumerate(prop_types):
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if t in self.objects and isinstance(self.objects[t], ObjectLiteral):
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prop_types[i] = self.objects[t].extern_name()
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prop_types = '|'.join(prop_types)
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lines.append(' * @type {%s}\n' % (prop_types,))
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lines.append(' */\n')
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lines.append('%s.prototype.%s;\n' % (self.extern_name(), prop))
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return ''.join(lines)
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def extern_name(self):
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return re.sub(r'(olx\.\S+)', r'\1Extern', self.name)
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def extern_namespace(self):
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return '.'.join(self.extern_name().split('.')[:-1]) or None
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def provide(self):
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return 'goog.provide(\'%s\');\n' % (self.name,)
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def typedef(self):
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lines = []
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lines.append('\n\n')
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lines.append('/**\n')
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for i, prop in enumerate(sorted(self.prop_types.keys())):
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prefix = ' * @typedef {{' if i == 0 else ' * '
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suffix = '}}' if i == len(self.prop_types) - 1 else ','
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type = self.prop_types[prop]
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if '|' in type:
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type = '(%s)' % (type,)
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lines.append('%s%s: %s%s\n' % (prefix, prop, type, suffix))
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lines.append(' */\n')
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lines.append('%s;\n' % (self.name,))
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return ''.join(lines)
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class Symbol(Exportable):
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def __init__(self, name, export_symbol):
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Exportable.__init__(self, name)
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self.export_symbol = export_symbol
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self.props = set()
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__repr__ = simplerepr
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def export(self):
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lines = []
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if self.export_symbol:
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lines.append('\n\ngoog.exportSymbol(\n \'%s\',\n %s);\n' % (self.name, self.name))
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lines.extend('goog.exportProperty(\n %s,\n \'%s\',\n %s.%s);\n' % (self.name, prop, self.name, prop) for prop in sorted(self.props))
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return ''.join(lines)
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def main(argv):
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option_parser = OptionParser()
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option_parser.add_option('--exports', action='store_true')
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option_parser.add_option('--externs', action='store_true')
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option_parser.add_option('--typedef', action='store_true')
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options, args = option_parser.parse_args(argv[1:])
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objects = {}
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requires = set()
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for arg in args:
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in_comment = False
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object_literal = None
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for line in open(arg, 'rU'):
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line = line.strip()
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if not line:
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continue
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if line == '/**':
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assert not in_comment
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in_comment = True
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continue
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if line == '*/':
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assert in_comment
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in_comment = False
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object_literal = None
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continue
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if in_comment:
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if not line.startswith('*'):
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raise RuntimeError(line) # malformed comment
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m = re.match(r'\*\s*@typedef\s*\{Object\}\s*(?P<name>\S+)', line)
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if m:
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assert object_literal is None
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name = m.group('name')
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if name in objects:
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raise RuntimeError(line) # Name already defined
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object_literal = ObjectLiteral(name, objects)
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objects[name] = object_literal
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continue
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m = re.match(r'\*\s*@property\s*{(?P<type>.*?)}\s*(?P<prop>\S+)', line)
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if m:
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assert object_literal is not None
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prop = m.group('prop')
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if prop in object_literal.prop_types:
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raise RuntimeError(line) # Duplicate property
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type = m.group('type')
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object_literal.prop_types[prop] = type
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continue
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continue
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m = re.match(r'@exportProperty\s+(?P<prop>\S+)\Z', line)
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if m:
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components = m.group('prop').split('.')
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if components[-2] == 'prototype':
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requires.add('.'.join(components[:-2]))
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else:
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requires.add('.'.join(components[:-1]))
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name = '.'.join(components[:-1])
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prop = components[-1]
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if name in objects:
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symbol = objects[name]
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else:
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symbol = Symbol(name, False)
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objects[name] = symbol
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symbol.props.add(prop)
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continue
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m = re.match(r'@exportSymbol\s+(?P<name>\S+)\Z', line)
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if m:
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name = m.group('name')
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if name in objects:
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raise RuntimeError(line) # Name already defined
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symbol = Symbol(name, True)
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objects[name] = symbol
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components = m.group('name').split('.')
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if re.match(r'[A-Z]', components[-1]):
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requires.add(name)
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else:
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requires.add('.'.join(components[:-1]))
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continue
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raise RuntimeError(line)
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objects = sorted(objects.values(), key=attrgetter('name'))
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if options.exports:
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if requires:
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for require in sorted(requires):
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sys.stdout.write('goog.require(\'%s\');\n' % (require,))
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for obj in objects:
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sys.stdout.write(obj.export())
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if options.externs:
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object_literals = [obj for obj in objects if isinstance(obj, ObjectLiteral)]
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sys.stdout.write('/**\n')
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sys.stdout.write(' * @externs\n')
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sys.stdout.write(' */\n')
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namespaces = sorted(set(filter(None, (object_literal.extern_namespace() for object_literal in object_literals))))
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for namespace in namespaces:
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sys.stdout.write('\n\n')
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sys.stdout.write('/**\n')
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sys.stdout.write(' * @type {Object}\n')
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sys.stdout.write(' */\n')
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if '.' in namespace:
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sys.stdout.write('%s = {};\n' % (namespace,))
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else:
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sys.stdout.write('var %s;\n' % (namespace,))
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for object_literal in object_literals:
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sys.stdout.write(object_literal.typedef())
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sys.stdout.write(object_literal.extern())
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if options.typedef:
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object_literals = [obj for obj in objects if isinstance(obj, ObjectLiteral)]
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for object_literal in object_literals:
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sys.stdout.write(object_literal.provide())
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for object_literal in object_literals:
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sys.stdout.write(object_literal.typedef())
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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