DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (375f9429ba87)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252
#!/usr/bin/env python
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import absolute_import
import sys
import os

import buildconfig
import mozpack.path as mozpath

# The xpidl parser is not incorporated in the in-tree virtualenv.
xpidl_dir = mozpath.join(buildconfig.topsrcdir, 'xpcom', 'idl-parser',
                         'xpidl')
xpidl_cachedir = mozpath.join(buildconfig.topobjdir, 'xpcom', 'idl-parser',
                              'xpidl')
sys.path.extend([xpidl_dir, xpidl_cachedir])
import xpidl

# Load the webidl configuration file.
glbl = {}
execfile(mozpath.join(buildconfig.topsrcdir,
                      'dom', 'bindings', 'Bindings.conf'),
         glbl)
webidlconfig = glbl['DOMInterfaces']

# Instantiate the parser.
p = xpidl.IDLParser()


def findIDL(includePath, interfaceFileName):
    for d in includePath:
        path = mozpath.join(d, interfaceFileName)
        if os.path.exists(path):
            return path
    raise BaseException("No IDL file found for interface %s "
                        "in include path %r"
                        % (interfaceFileName, includePath))


def loadEventIDL(parser, includePath, eventname):
    eventidl = ("nsIAccessible%s.idl" % eventname)
    idlFile = findIDL(includePath, eventidl)
    idl = p.parse(open(idlFile).read(), idlFile)
    idl.resolve(includePath, p, webidlconfig)
    return idl, idlFile


class Configuration:
    def __init__(self, filename):
        config = {}
        execfile(filename, config)
        self.simple_events = config.get('simple_events', [])


def firstCap(str):
    return str[0].upper() + str[1:]


def writeAttributeParams(a):
    return ("%s a%s" % (a.realtype.nativeType('in'), firstCap(a.name)))


def print_header_file(fd, conf, incdirs):
    idl_paths = set()

    fd.write("/* THIS FILE IS AUTOGENERATED - DO NOT EDIT */\n")
    fd.write("#ifndef _mozilla_a11y_generated_AccEvents_h_\n"
             "#define _mozilla_a11y_generated_AccEvents_h_\n\n")
    fd.write("#include \"nscore.h\"\n")
    fd.write("#include \"nsCOMPtr.h\"\n")
    fd.write("#include \"nsCycleCollectionParticipant.h\"\n")
    fd.write("#include \"nsString.h\"\n")
    for e in conf.simple_events:
        fd.write("#include \"nsIAccessible%s.h\"\n" % e)
    for e in conf.simple_events:
        idl, idl_path = loadEventIDL(p, incdirs, e)
        idl_paths.add(idl_path)
        for iface in filter(lambda p: p.kind == "interface", idl.productions):
            classname = ("xpcAcc%s" % e)
            baseinterfaces = interfaces(iface)

            fd.write("\nclass %s final : public %s\n" % (classname, iface.name))
            fd.write("{\n")
            fd.write("public:\n")

            attributes = allAttributes(iface)
            args = map(writeAttributeParams, attributes)
            fd.write("  %s(%s) :\n" % (classname, ", ".join(args)))

            initializers = []
            for a in attributes:
                initializers.append("m%s(a%s)" % (firstCap(a.name), firstCap(a.name)))
            fd.write("  %s\n  {}\n\n" % ", ".join(initializers))
            fd.write("  NS_DECL_CYCLE_COLLECTING_ISUPPORTS\n")
            fd.write("  NS_DECL_CYCLE_COLLECTION_CLASS(%s)\n" % (classname))

            for iface in filter(lambda i: i.name != "nsISupports", baseinterfaces):
                fd.write("  NS_DECL_%s\n" % iface.name.upper())

            fd.write("\nprivate:\n")
            fd.write("  ~%s() {}\n\n" % classname)
            for a in attributes:
                fd.write("  %s\n" % attributeVariableTypeAndName(a))
            fd.write("};\n\n")

    fd.write("#endif\n")

    return idl_paths


def interfaceAttributeTypes(idl):
    ifaces = filter(lambda p: p.kind == "interface", idl.productions)
    attributes = []
    for i in ifaces:
        ifaceAttributes = allAttributes(i)
        attributes.extend(ifaceAttributes)
    ifaceAttrs = filter(lambda a: a.realtype.nativeType("in").endswith("*"), attributes)
    return map(lambda a: a.realtype.nativeType("in").strip(" *"), ifaceAttrs)


def print_cpp(idl, fd, conf, eventname):
    for p in idl.productions:
        if p.kind == 'interface':
            write_cpp(eventname, p, fd)


def print_cpp_file(fd, conf, incdirs):
    idl_paths = set()
    fd.write("/* THIS FILE IS AUTOGENERATED - DO NOT EDIT */\n\n")
    fd.write('#include "xpcAccEvents.h"\n')

    includes = []
    for e in conf.simple_events:
        if e not in includes:
            includes.append(("nsIAccessible%s" % e))

    types = []
    for e in conf.simple_events:
        idl, idl_path = loadEventIDL(p, incdirs, e)
        idl_paths.add(idl_path)
        types.extend(interfaceAttributeTypes(idl))

    for c in types:
        fd.write("#include \"%s.h\"\n" % c)

    fd.write("\n")
    for e in conf.simple_events:
        idl, idl_path = loadEventIDL(p, incdirs, e)
        idl_paths.add(idl_path)
        print_cpp(idl, fd, conf, e)

    return idl_paths


def attributeVariableTypeAndName(a):
    if a.realtype.nativeType('in').endswith('*'):
        l = ["nsCOMPtr<%s> m%s;" % (a.realtype.nativeType('in').strip('* '),
                                    firstCap(a.name))]
    elif a.realtype.nativeType('in').count("nsAString"):
        l = ["nsString m%s;" % firstCap(a.name)]
    elif a.realtype.nativeType('in').count("nsACString"):
        l = ["nsCString m%s;" % firstCap(a.name)]
    else:
        l = ["%sm%s;" % (a.realtype.nativeType('in'),
                         firstCap(a.name))]
    return ", ".join(l)


def writeAttributeGetter(fd, classname, a):
    fd.write("NS_IMETHODIMP\n")
    fd.write("%s::Get%s(" % (classname, firstCap(a.name)))
    if a.realtype.nativeType('in').endswith('*'):
        fd.write("%s** a%s" % (a.realtype.nativeType('in').strip('* '), firstCap(a.name)))
    elif a.realtype.nativeType('in').count("nsAString"):
        fd.write("nsAString& a%s" % firstCap(a.name))
    elif a.realtype.nativeType('in').count("nsACString"):
        fd.write("nsACString& a%s" % firstCap(a.name))
    else:
        fd.write("%s*a%s" % (a.realtype.nativeType('in'), firstCap(a.name)))
    fd.write(")\n")
    fd.write("{\n")
    if a.realtype.nativeType('in').endswith('*'):
        fd.write("  NS_IF_ADDREF(*a%s = m%s);\n" % (firstCap(a.name), firstCap(a.name)))
    elif a.realtype.nativeType('in').count("nsAString"):
        fd.write("  a%s = m%s;\n" % (firstCap(a.name), firstCap(a.name)))
    elif a.realtype.nativeType('in').count("nsACString"):
        fd.write("  a%s = m%s;\n" % (firstCap(a.name), firstCap(a.name)))
    else:
        fd.write("  *a%s = m%s;\n" % (firstCap(a.name), firstCap(a.name)))
    fd.write("  return NS_OK;\n")
    fd.write("}\n\n")


def interfaces(iface):
    interfaces = []
    while iface.base:
        interfaces.append(iface)
        iface = iface.idl.getName(xpidl.TypeId(iface.base), iface.location)
    interfaces.append(iface)
    interfaces.reverse()
    return interfaces


def allAttributes(iface):
    attributes = []
    for i in interfaces(iface):
        attrs = filter(lambda m: isinstance(m, xpidl.Attribute), i.members)
        attributes.extend(attrs)

    return attributes


def write_cpp(eventname, iface, fd):
    classname = "xpcAcc%s" % eventname
    attributes = allAttributes(iface)
    ccattributes = filter(lambda m: m.realtype.nativeType('in').endswith('*'), attributes)
    fd.write("NS_IMPL_CYCLE_COLLECTION(%s" % classname)
    for c in ccattributes:
        fd.write(", m%s" % firstCap(c.name))
    fd.write(")\n\n")

    fd.write("NS_IMPL_CYCLE_COLLECTING_ADDREF(%s)\n" % classname)
    fd.write("NS_IMPL_CYCLE_COLLECTING_RELEASE(%s)\n\n" % classname)

    fd.write("NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(%s)\n" % classname)
    for baseiface in interfaces(iface):
        fd.write("  NS_INTERFACE_MAP_ENTRY(%s)\n" % baseiface.name)
    fd.write("NS_INTERFACE_MAP_END\n\n")

    for a in attributes:
        writeAttributeGetter(fd, classname, a)


def get_conf(conf_file):
    conf = Configuration(conf_file)
    inc_dir = [
        mozpath.join(buildconfig.topsrcdir, 'accessible', 'interfaces'),
        mozpath.join(buildconfig.topsrcdir, 'xpcom', 'base'),
    ]
    return conf, inc_dir


def gen_files(fd, conf_file, xpidllex, xpidlyacc):
    deps = set()
    conf, inc_dir = get_conf(conf_file)
    deps.update(print_header_file(fd, conf, inc_dir))
    with open(os.path.join(os.path.dirname(fd.name), 'xpcAccEvents.cpp'), 'w') as cpp_fd:
        deps.update(print_cpp_file(cpp_fd, conf, inc_dir))
    return deps