layout/style/GenerateServoCSSPropList.py

   1 # This Source Code Form is subject to the terms of the Mozilla Public
   2 # License, v. 2.0. If a copy of the MPL was not distributed with this
   3 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 import buildconfig
   6 import mozpack.path as mozpath
   7 import os
   8 import runpy
   9 import subprocess
  10 import string
  11 import sys
  12
  13 SERVO_BASE = mozpath.join(buildconfig.topsrcdir, "servo")
  14 SERVO_PROP_BASE = mozpath.join(SERVO_BASE, "components", "style", "properties")
  15
  16
  17 def generate_data(output, template):
  18     output.write("# THIS IS AN AUTOGENERATED FILE.  DO NOT EDIT\n\n")
  19     output.write(
  20         subprocess.check_output(
  21             [
  22                 sys.executable,
  23                 mozpath.join(SERVO_PROP_BASE, "build.py"),
  24                 "gecko",
  25                 "geckolib",
  26                 template,
  27             ],
  28             universal_newlines=True,
  29         )
  30     )
  31
  32     # Add all relevant files into the dependencies of the generated file.
  33     DEP_EXTS = [".py", ".rs", ".zip"]
  34     deps = set()
  35     for path, dirs, files in os.walk(SERVO_PROP_BASE):
  36         for file in files:
  37             if os.path.splitext(file)[1] in DEP_EXTS:
  38                 deps.add(mozpath.join(path, file))
  39     return deps
  40
  41
  42 def generate_header(output, data):
  43     data = runpy.run_path(data)["data"]
  44
  45     output.write(
  46         """/* THIS IS AN AUTOGENERATED FILE.  DO NOT EDIT */
  47
  48 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
  49 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
  50 /* This Source Code Form is subject to the terms of the Mozilla Public
  51  * License, v. 2.0. If a copy of the MPL was not distributed with this
  52  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
  53
  54 #define CSS_PROP_DOMPROP_PREFIXED(name_) \\
  55   CSS_PROP_PUBLIC_OR_PRIVATE(Moz ## name_, name_)
  56
  57 #ifndef CSS_PROP_LONGHAND
  58 #define CSS_PROP_LONGHAND(name_, id_, method_, flags_, pref_) /* nothing */
  59 #define DEFINED_CSS_PROP_LONGHAND
  60 #endif
  61
  62 #ifndef CSS_PROP_SHORTHAND
  63 #define CSS_PROP_SHORTHAND(name_, id_, method_, flags_, pref_) /* nothing */
  64 #define DEFINED_CSS_PROP_SHORTHAND
  65 #endif
  66
  67 #ifndef CSS_PROP_ALIAS
  68 #define CSS_PROP_ALIAS(name_, aliasid_, id_, method_, flags_, pref_) /* nothing */
  69 #define DEFINED_CSS_PROP_ALIAS
  70 #endif
  71
  72 """
  73     )
  74
  75     # Some flags are only used for code generation, so we don't need to
  76     # expose them to runtime.
  77     COMPILE_TIME_FLAGS = {"ExposedOnGetCS"}
  78
  79     MACRO_NAMES = {
  80         "longhand": "CSS_PROP_LONGHAND",
  81         "shorthand": "CSS_PROP_SHORTHAND",
  82         "alias": "CSS_PROP_ALIAS",
  83     }
  84     for prop in data.values():
  85         is_internal = "Internal" in prop.flags
  86         flags = " | ".join(
  87             "CSSPropFlags::{}".format(flag)
  88             for flag in prop.flags
  89             if flag not in COMPILE_TIME_FLAGS
  90         )
  91         if not flags:
  92             flags = "CSSPropFlags(0)"
  93         pref = '"' + prop.pref + '"'
  94         method = prop.method
  95         if prop.type() == "alias":
  96             params = [prop.name, prop.alias_id, prop.prop_id, method, flags, pref]
  97         else:
  98             if method == "CssFloat":
  99                 method = "CSS_PROP_PUBLIC_OR_PRIVATE(CssFloat, Float)"
 100             elif method.startswith("Moz"):
 101                 method = "CSS_PROP_DOMPROP_PREFIXED({})".format(method[3:])
 102             params = [prop.name, prop.id, method, flags, pref]
 103         excludes = []
 104         if is_internal:
 105             excludes.append("CSS_PROP_LIST_EXCLUDE_INTERNAL")
 106         if "Style" not in prop.rules:
 107             excludes.append("CSS_PROP_LIST_EXCLUDE_NOT_IN_STYLE")
 108
 109         if excludes:
 110             output.write(
 111                 "#if {}\n".format(
 112                     " || ".join("!defined " + exclude for exclude in excludes)
 113                 )
 114             )
 115         output.write("{}({})\n".format(MACRO_NAMES[prop.type()], ", ".join(params)))
 116         if excludes:
 117             output.write("#endif\n")
 118
 119     output.write(
 120         """
 121 #ifdef DEFINED_CSS_PROP_ALIAS
 122 #undef CSS_PROP_ALIAS
 123 #undef DEFINED_CSS_PROP_ALIAS
 124 #endif
 125
 126 #ifdef DEFINED_CSS_PROP_SHORTHAND
 127 #undef CSS_PROP_SHORTHAND
 128 #undef DEFINED_CSS_PROP_SHORTHAND
 129 #endif
 130
 131 #ifdef DEFINED_CSS_PROP_LONGHAND
 132 #undef CSS_PROP_LONGHAND
 133 #undef DEFINED_CSS_PROP_LONGHAND
 134 #endif
 135
 136 #undef CSS_PROP_DOMPROP_PREFIXED
 137 """
 138     )