1 files changed, 176 insertions, 0 deletions
diff --git a/servo/components/style/properties/build.py b/servo/components/style/properties/build.py
new file mode 100644
index 0000000000..6c3ee0cf66
--- /dev/null
+++ b/servo/components/style/properties/build.py
@@ -0,0 +1,176 @@
+# 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 https://mozilla.org/MPL/2.0/.
+
+import json
+import os.path
+import re
+import sys
+
+BASE = os.path.dirname(__file__.replace("\\", "/"))
+sys.path.insert(0, os.path.join(BASE, "Mako-1.1.2-py2.py3-none-any.whl"))
+sys.path.insert(0, BASE)  # For importing `data.py`
+
+from mako import exceptions
+from mako.lookup import TemplateLookup
+from mako.template import Template
+
+import data
+
+RE_PYTHON_ADDR = re.compile(r"<.+? object at 0x[0-9a-fA-F]+>")
+
+OUT_DIR = os.environ.get("OUT_DIR", "")
+
+STYLE_STRUCT_LIST = [
+    "background",
+    "border",
+    "box",
+    "column",
+    "counters",
+    "effects",
+    "font",
+    "inherited_box",
+    "inherited_svg",
+    "inherited_table",
+    "inherited_text",
+    "inherited_ui",
+    "list",
+    "margin",
+    "outline",
+    "page",
+    "padding",
+    "position",
+    "svg",
+    "table",
+    "text",
+    "ui",
+    "xul",
+]
+
+
+def main():
+    usage = (
+        "Usage: %s [ servo-2013 | servo-2020 | gecko ] [ style-crate | geckolib <template> | html ]"
+        % sys.argv[0]
+    )
+    if len(sys.argv) < 3:
+        abort(usage)
+    engine = sys.argv[1]
+    output = sys.argv[2]
+
+    if engine not in ["servo-2013", "servo-2020", "gecko"] or output not in [
+        "style-crate",
+        "geckolib",
+        "html",
+    ]:
+        abort(usage)
+
+    properties = data.PropertiesData(engine=engine)
+    files = {}
+    for kind in ["longhands", "shorthands"]:
+        files[kind] = {}
+        for struct in STYLE_STRUCT_LIST:
+            file_name = os.path.join(BASE, kind, "{}.mako.rs".format(struct))
+            if kind == "shorthands" and not os.path.exists(file_name):
+                files[kind][struct] = ""
+                continue
+            files[kind][struct] = render(
+                file_name,
+                engine=engine,
+                data=properties,
+            )
+    properties_template = os.path.join(BASE, "properties.mako.rs")
+    files["properties"] = render(
+        properties_template,
+        engine=engine,
+        data=properties,
+        __file__=properties_template,
+        OUT_DIR=OUT_DIR,
+    )
+    if output == "style-crate":
+        write(OUT_DIR, "properties.rs", files["properties"])
+        for kind in ["longhands", "shorthands"]:
+            for struct in files[kind]:
+                write(
+                    os.path.join(OUT_DIR, kind),
+                    "{}.rs".format(struct),
+                    files[kind][struct],
+                )
+
+        if engine == "gecko":
+            template = os.path.join(BASE, "gecko.mako.rs")
+            rust = render(template, data=properties)
+            write(OUT_DIR, "gecko_properties.rs", rust)
+
+        if engine in ["servo-2013", "servo-2020"]:
+            if engine == "servo-2013":
+                pref_attr = "servo_2013_pref"
+            if engine == "servo-2020":
+                pref_attr = "servo_2020_pref"
+            properties_dict = {
+                kind: {
+                    p.name: {"pref": getattr(p, pref_attr)}
+                    for prop in properties_list
+                    if prop.enabled_in_content()
+                    for p in [prop] + prop.alias
+                }
+                for kind, properties_list in [
+                    ("longhands", properties.longhands),
+                    ("shorthands", properties.shorthands),
+                ]
+            }
+            as_html = render(
+                os.path.join(BASE, "properties.html.mako"), properties=properties_dict
+            )
+            as_json = json.dumps(properties_dict, indent=4, sort_keys=True)
+            doc_servo = os.path.join(BASE, "..", "..", "..", "target", "doc", "servo")
+            write(doc_servo, "css-properties.html", as_html)
+            write(doc_servo, "css-properties.json", as_json)
+            write(OUT_DIR, "css-properties.json", as_json)
+    elif output == "geckolib":
+        if len(sys.argv) < 4:
+            abort(usage)
+        template = sys.argv[3]
+        header = render(template, data=properties)
+        sys.stdout.write(header)
+
+
+def abort(message):
+    print(message, file=sys.stderr)
+    sys.exit(1)
+
+
+def render(filename, **context):
+    try:
+        lookup = TemplateLookup(
+            directories=[BASE], input_encoding="utf8", strict_undefined=True
+        )
+        template = Template(
+            open(filename, "rb").read(),
+            filename=filename,
+            input_encoding="utf8",
+            lookup=lookup,
+            strict_undefined=True,
+        )
+        # Uncomment to debug generated Python code:
+        # write("/tmp", "mako_%s.py" % os.path.basename(filename), template.code)
+        return template.render(**context)
+    except Exception:
+        # Uncomment to see a traceback in generated Python code:
+        # raise
+        abort(exceptions.text_error_template().render())
+
+
+def write(directory, filename, content):
+    if not os.path.exists(directory):
+        os.makedirs(directory)
+    full_path = os.path.join(directory, filename)
+    open(full_path, "w", encoding="utf-8").write(content)
+
+    python_addr = RE_PYTHON_ADDR.search(content)
+    if python_addr:
+        abort('Found "{}" in {} ({})'.format(python_addr.group(0), filename, full_path))
+
+
+if __name__ == "__main__":
+    main()