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-rw-r--r--layout/style/GenerateCSSPropsGenerated.py114
1 files changed, 114 insertions, 0 deletions
diff --git a/layout/style/GenerateCSSPropsGenerated.py b/layout/style/GenerateCSSPropsGenerated.py
new file mode 100644
index 0000000000..d217fce0c5
--- /dev/null
+++ b/layout/style/GenerateCSSPropsGenerated.py
@@ -0,0 +1,114 @@
+# 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/.
+
+import runpy
+import sys
+import string
+import argparse
+
+
+class PropertyWrapper(object):
+ __slots__ = ["index", "prop", "idlname"]
+
+ def __init__(self, index, prop):
+ self.index = index
+ self.prop = prop
+ if "Internal" in prop.flags:
+ self.idlname = None
+ else:
+ idl_name = prop.method
+ if not idl_name.startswith("Moz"):
+ idl_name = idl_name[0].lower() + idl_name[1:]
+ self.idlname = idl_name
+
+ def __getattr__(self, name):
+ return getattr(self.prop, name)
+
+
+def generate(output, dataFile):
+ output.write(
+ """/* THIS IS AN AUTOGENERATED FILE. DO NOT EDIT */
+
+/* processed file that defines CSS property tables that can't be generated
+ with the pre-processor, designed to be #included in nsCSSProps.cpp */
+
+"""
+ )
+
+ raw_properties = runpy.run_path(dataFile)["data"]
+ properties = [
+ PropertyWrapper(i, p)
+ for i, p in enumerate(raw_properties)
+ if p.type() != "alias"
+ ]
+
+ # Generate kIDLNameTable
+ output.write(
+ "const char* const nsCSSProps::" "kIDLNameTable[eCSSProperty_COUNT] = {\n"
+ )
+ for p in properties:
+ if p.idlname is None:
+ output.write(" nullptr, // {}\n".format(p.name))
+ else:
+ output.write(' "{}",\n'.format(p.idlname))
+ output.write("};\n\n")
+
+ # Generate kIDLNameSortPositionTable
+ ps = sorted(properties, key=lambda p: p.idlname if p.idlname else "")
+ ps = [(p, position) for position, p in enumerate(ps)]
+ ps.sort(key=lambda item: item[0].index)
+ output.write(
+ "const int32_t nsCSSProps::"
+ "kIDLNameSortPositionTable[eCSSProperty_COUNT] = {\n"
+ )
+ for (p, position) in ps:
+ output.write(" {},\n".format(position))
+ output.write("};\n\n")
+
+ # Generate preferences table
+ output.write(
+ "const nsCSSProps::PropertyPref " "nsCSSProps::kPropertyPrefTable[] = {\n"
+ )
+ for p in raw_properties:
+ if not p.pref:
+ continue
+ if p.type() != "alias":
+ prop_id = "eCSSProperty_" + p.id
+ else:
+ prop_id = "eCSSPropertyAlias_" + p.alias_id
+ output.write(' {{ {}, "{}" }},\n'.format(prop_id, p.pref))
+ output.write(" { eCSSProperty_UNKNOWN, nullptr },\n")
+ output.write("};\n\n")
+
+ # Generate shorthand subprop tables
+ names = []
+ for p in properties:
+ if p.type() != "shorthand":
+ continue
+ name = "g{}SubpropTable".format(p.method)
+ names.append(name)
+ output.write("static const nsCSSPropertyID {}[] = {{\n".format(name))
+ for subprop in p.subprops:
+ output.write(" eCSSProperty_{},\n".format(subprop))
+ output.write(" eCSSProperty_UNKNOWN\n")
+ output.write("};\n\n")
+ output.write("const nsCSSPropertyID* const\n")
+ output.write(
+ "nsCSSProps::kSubpropertyTable["
+ "eCSSProperty_COUNT - eCSSProperty_COUNT_no_shorthands"
+ "] = {\n"
+ )
+ for name in names:
+ output.write(" {},\n".format(name))
+ output.write("};\n\n")
+
+ # Generate assertions
+ msg = (
+ "GenerateCSSPropsGenerated.py did not list properties "
+ "in nsCSSPropertyID order"
+ )
+ for p in properties:
+ output.write(
+ 'static_assert(eCSSProperty_{} == {}, "{}");\n'.format(p.id, p.index, msg)
+ )