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Bug 1210905 part 1: Make property_database.js automatically populate aliasing properties' *_values & prerequisites fields based on their alias target. r=heycam

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Daniel Holbert 2015-10-04 23:44:42 -07:00
parent 2410fabf3e
commit 5de2c40bbd
1 changed files with 34 additions and 0 deletions
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34
layout/style/test/property_database.js
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@ -65,6 +65,12 @@ const CSS_TYPE_SHORTHAND_AND_LONGHAND = 2;
// unbalanced_values: Things that are not values for the property and
// should be rejected, and which also contain unbalanced constructs
// that should absorb what follows
//
// Note: By default, an alias is assumed to accept/reject the same values as
// the property that it aliases, and to have the same prerequisites. So, if
// "alias_for" is set, the "*_values" and "prerequisites" fields can simply
// be omitted, and they'll be populated automatically to match the aliased
// property's fields.
// Helper functions used to construct gCSSProperties.
@ -6621,3 +6627,31 @@ if (IsCSSPropertyPrefEnabled("layout.css.unset-value.enabled")) {
gCSSProperties["text-align"].invalid_values.push("true left");
}
}
// Copy aliased properties' fields from their alias targets.
for (var prop in gCSSProperties) {
var entry = gCSSProperties[prop];
if (entry.alias_for) {
var aliasTargetEntry = gCSSProperties[entry.alias_for];
if (!aliasTargetEntry) {
ok(false,
"Alias '" + prop + "' alias_for field, '" + entry.alias_for + "', " +
"must be set to a recognized CSS property in gCSSProperties");
} else {
// Copy 'values' fields & 'prerequisites' field from aliasTargetEntry:
var fieldsToCopy =
["initial_values", "other_values", "invalid_values",
"quirks_values", "unbalanced_values",
"prerequisites"];
fieldsToCopy.forEach(function(fieldName) {
// (Don't copy the field if the alias already has something there,
// or if the aliased property doesn't have anything to copy.)
if (!(fieldName in entry) &&
fieldName in aliasTargetEntry) {
entry[fieldName] = aliasTargetEntry[fieldName]
}
});
}
}
}