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Support declaring keyword property Gecko coverage as inexhaustive.

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This allows us to control whether the catchall case in the match expression
that maps Gecko const to Servo enum will be generated.

MozReview-Commit-ID: L65IjTONdfl
This commit is contained in:
Cameron McCormack 2016-12-05 13:47:09 -10:00
parent 75418b7005
commit 0ff7b5f2de
9 changed files with 21 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

8
components/style/properties/data.py
View file

@ -28,7 +28,9 @@ def to_camel_case(ident):
class Keyword(object):
def __init__(self, name, values, gecko_constant_prefix=None,
gecko_enum_prefix=None, custom_consts=None,
extra_gecko_values=None, extra_servo_values=None):
extra_gecko_values=None, extra_servo_values=None,
gecko_strip_moz_prefix=True,
gecko_inexhaustive=None):
self.name = name
self.values = values.split()
if gecko_constant_prefix and gecko_enum_prefix:
@ -39,6 +41,8 @@ class Keyword(object):
self.extra_gecko_values = (extra_gecko_values or "").split()
self.extra_servo_values = (extra_servo_values or "").split()
self.consts_map = {} if custom_consts is None else custom_consts
self.gecko_strip_moz_prefix = gecko_strip_moz_prefix
self.gecko_inexhaustive = gecko_inexhaustive or (gecko_enum_prefix is None)
def gecko_values(self):
return self.values + self.extra_gecko_values
@ -55,7 +59,7 @@ class Keyword(object):
raise Exception("Bad product: " + product)
def gecko_constant(self, value):
moz_stripped = value.replace("-moz-", '')
moz_stripped = value.replace("-moz-", '') if self.gecko_strip_moz_prefix else value
parts = moz_stripped.split('-')
if self.gecko_enum_prefix:
parts = [p.title() for p in parts]

5
components/style/properties/gecko.mako.rs
View file

@ -255,7 +255,9 @@ def set_gecko_property(ffi_name, expr):
% for value in keyword.values_for('gecko'):
structs::${keyword.gecko_constant(value)} => Keyword::${to_rust_ident(value)},
% endfor
% if keyword.gecko_inexhaustive:
x => panic!("Found unexpected value in style struct for ${ident} property: {:?}", x),
% endif
}
}
</%def>
@ -1027,7 +1029,8 @@ fn static_assert() {
"table-header-group table-footer-group table-row table-column-group " +
"table-column table-cell table-caption list-item flex none " +
"-moz-box -moz-inline-box",
gecko_enum_prefix="StyleDisplay") %>
gecko_enum_prefix="StyleDisplay",
gecko_inexhaustive=True) %>
${impl_keyword('display', 'mDisplay', display_keyword, True)}
// overflow-y is implemented as a newtype of overflow-x, so we need special handling.

2
components/style/properties/helpers.mako.rs
View file

@ -329,7 +329,7 @@
keyword_kwargs = {a: kwargs.pop(a, None) for a in [
'gecko_constant_prefix', 'gecko_enum_prefix',
'extra_gecko_values', 'extra_servo_values',
'custom_consts',
'custom_consts', 'gecko_inexhaustive',
]}
%>

2
components/style/properties/longhand/border.mako.rs
View file

@ -58,11 +58,13 @@
${helpers.single_keyword("box-decoration-break", "slice clone",
gecko_enum_prefix="StyleBoxDecorationBreak",
gecko_inexhaustive=True,
products="gecko", animatable=False)}
${helpers.single_keyword("-moz-float-edge", "content-box margin-box",
gecko_ffi_name="mFloatEdge",
gecko_enum_prefix="StyleFloatEdge",
gecko_inexhaustive=True,
products="gecko",
animatable=False)}

1
components/style/properties/longhand/box.mako.rs
View file

@ -92,6 +92,7 @@ ${helpers.single_keyword("position", "static absolute relative fixed",
animatable="False"
need_clone="True"
gecko_enum_prefix="StyleFloat"
gecko_inexhaustive="True"
gecko_ffi_name="mFloat">
use values::NoViewportPercentage;
impl NoViewportPercentage for SpecifiedValue {}

2
components/style/properties/longhand/inherited_svg.mako.rs
View file

@ -35,6 +35,7 @@ ${helpers.predefined_type("fill-opacity", "Opacity", "1.0",
${helpers.single_keyword("fill-rule", "nonzero evenodd",
gecko_enum_prefix="StyleFillRule",
gecko_inexhaustive=True,
products="gecko", animatable=False)}
${helpers.single_keyword("shape-rendering",
@ -60,4 +61,5 @@ ${helpers.predefined_type("stroke-opacity", "Opacity", "1.0",
${helpers.single_keyword("clip-rule", "nonzero evenodd",
products="gecko",
gecko_enum_prefix="StyleFillRule",
gecko_inexhaustive=True,
animatable=False)}

3
components/style/properties/longhand/pointing.mako.rs
View file

@ -151,15 +151,18 @@ ${helpers.single_keyword("pointer-events", "auto none", animatable=False)}
${helpers.single_keyword("-moz-user-input", "none enabled disabled",
products="gecko", gecko_ffi_name="mUserInput",
gecko_enum_prefix="StyleUserInput",
gecko_inexhaustive=True,
animatable=False)}
${helpers.single_keyword("-moz-user-modify", "read-only read-write write-only",
products="gecko", gecko_ffi_name="mUserModify",
gecko_enum_prefix="StyleUserModify",
gecko_inexhaustive=True,
animatable=False)}
${helpers.single_keyword("-moz-user-focus",
"ignore normal select-after select-before select-menu select-same select-all none",
products="gecko", gecko_ffi_name="mUserFocus",
gecko_enum_prefix="StyleUserFocus",
gecko_inexhaustive=True,
animatable=False)}

1
components/style/properties/longhand/ui.mako.rs
View file

@ -16,4 +16,5 @@ ${helpers.single_keyword("ime-mode", "normal auto active disabled inactive",
${helpers.single_keyword("-moz-user-select", "auto text none all", products="gecko",
gecko_ffi_name="mUserSelect",
gecko_enum_prefix="StyleUserSelect",
gecko_inexhaustive=True,
animatable=False)}

1
components/style/properties/longhand/xul.mako.rs
View file

@ -11,6 +11,7 @@
${helpers.single_keyword("-moz-box-align", "stretch start center baseline end",
products="gecko", gecko_ffi_name="mBoxAlign",
gecko_enum_prefix="StyleBoxAlign",
gecko_inexhaustive=True,
animatable=False)}
${helpers.predefined_type("-moz-box-flex", "Number", "0.0", "parse_non_negative",