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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
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5
components/style/properties/gecko.mako.rs
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@ -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.