processor.js
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(function() {
var OLD_DIRECTION, Processor, SIZES, Value, utils, vendor;
vendor = require('postcss/lib/vendor');
Value = require('./value');
utils = require('./utils');
OLD_DIRECTION = /(^|[^-])(linear|radial)-gradient\(\s*(top|left|right|bottom)/i;
SIZES = ['width', 'height', 'min-width', 'max-width', 'min-height', 'max-height', 'inline-size', 'min-inline-size', 'max-inline-size', 'block-size', 'min-block-size', 'max-block-size'];
Processor = (function() {
function Processor(prefixes) {
this.prefixes = prefixes;
}
Processor.prototype.add = function(css, result) {
var keyframes, resolution, supports, viewport;
resolution = this.prefixes.add['@resolution'];
keyframes = this.prefixes.add['@keyframes'];
viewport = this.prefixes.add['@viewport'];
supports = this.prefixes.add['@supports'];
css.walkAtRules((function(_this) {
return function(rule) {
if (rule.name === 'keyframes') {
if (!_this.disabled(rule)) {
return keyframes != null ? keyframes.process(rule) : void 0;
}
} else if (rule.name === 'viewport') {
if (!_this.disabled(rule)) {
return viewport != null ? viewport.process(rule) : void 0;
}
} else if (rule.name === 'supports') {
if (_this.prefixes.options.supports !== false && !_this.disabled(rule)) {
return supports.process(rule);
}
} else if (rule.name === 'media' && rule.params.indexOf('-resolution') !== -1) {
if (!_this.disabled(rule)) {
return resolution != null ? resolution.process(rule) : void 0;
}
}
};
})(this));
css.walkRules((function(_this) {
return function(rule) {
var j, len, ref, results, selector;
if (_this.disabled(rule)) {
return;
}
ref = _this.prefixes.add.selectors;
results = [];
for (j = 0, len = ref.length; j < len; j++) {
selector = ref[j];
results.push(selector.process(rule, result));
}
return results;
};
})(this));
css.walkDecls((function(_this) {
return function(decl) {
var display, prefixer;
if (_this.disabled(decl)) {
return;
}
if (decl.prop === 'display' && decl.value === 'box') {
result.warn('You should write display: flex by final spec ' + 'instead of display: box', {
node: decl
});
return;
}
if (decl.value.indexOf('linear-gradient') !== -1) {
if (OLD_DIRECTION.test(decl.value)) {
result.warn('Gradient has outdated direction syntax. ' + 'New syntax is like `to left` instead of `right`.', {
node: decl
});
}
}
if (decl.prop === 'text-emphasis-position') {
if (decl.value === 'under' || decl.value === 'over') {
result.warn('You should use 2 values for text-emphasis-position ' + 'For example, `under left` instead of just `under`.', {
node: decl
});
}
}
if (SIZES.indexOf(decl.prop) !== -1) {
if (decl.value.indexOf('fill-available') !== -1) {
result.warn('Replace fill-available to stretch, ' + 'because spec had been changed', {
node: decl
});
} else if (decl.value.indexOf('fill') !== -1) {
result.warn('Replace fill to stretch, because spec had been changed', {
node: decl
});
}
}
if (_this.prefixes.options.flexbox !== false) {
if (decl.prop === 'grid-row-end' && decl.value.indexOf('span') === -1) {
result.warn('IE supports only grid-row-end with span. ' + 'You should add grid: false option to Autoprefixer ' + 'and use some JS grid polyfill for full spec support', {
node: decl
});
}
if (decl.prop === 'grid-row') {
if (decl.value.indexOf('/') !== -1 && decl.value.indexOf('span') === -1) {
result.warn('IE supports only grid-row with / and span. ' + 'You should add grid: false option to Autoprefixer ' + 'and use some JS grid polyfill for full spec support', {
node: decl
});
}
}
}
if (decl.prop === 'transition' || decl.prop === 'transition-property') {
return _this.prefixes.transition.add(decl, result);
} else if (decl.prop === 'align-self') {
display = _this.displayType(decl);
if (display !== 'grid' && _this.prefixes.options.flexbox !== false) {
prefixer = _this.prefixes.add['align-self'];
if (prefixer && prefixer.prefixes) {
prefixer.process(decl);
}
}
if (display !== 'flex' && _this.prefixes.options.grid !== false) {
prefixer = _this.prefixes.add['grid-row-align'];
if (prefixer && prefixer.prefixes) {
return prefixer.process(decl);
}
}
} else {
prefixer = _this.prefixes.add[decl.prop];
if (prefixer && prefixer.prefixes) {
return prefixer.process(decl);
}
}
};
})(this));
return css.walkDecls((function(_this) {
return function(decl) {
var j, len, ref, unprefixed, value;
if (_this.disabled(decl)) {
return;
}
unprefixed = _this.prefixes.unprefixed(decl.prop);
ref = _this.prefixes.values('add', unprefixed);
for (j = 0, len = ref.length; j < len; j++) {
value = ref[j];
value.process(decl, result);
}
return Value.save(_this.prefixes, decl);
};
})(this));
};
Processor.prototype.remove = function(css) {
var checker, j, len, ref, resolution;
resolution = this.prefixes.remove['@resolution'];
css.walkAtRules((function(_this) {
return function(rule, i) {
if (_this.prefixes.remove['@' + rule.name]) {
if (!_this.disabled(rule)) {
return rule.parent.removeChild(i);
}
} else if (rule.name === 'media' && rule.params.indexOf('-resolution') !== -1) {
return resolution != null ? resolution.clean(rule) : void 0;
}
};
})(this));
ref = this.prefixes.remove.selectors;
for (j = 0, len = ref.length; j < len; j++) {
checker = ref[j];
css.walkRules((function(_this) {
return function(rule, i) {
if (checker.check(rule)) {
if (!_this.disabled(rule)) {
return rule.parent.removeChild(i);
}
}
};
})(this));
}
return css.walkDecls((function(_this) {
return function(decl, i) {
var k, len1, notHack, ref1, ref2, rule, unprefixed;
if (_this.disabled(decl)) {
return;
}
rule = decl.parent;
unprefixed = _this.prefixes.unprefixed(decl.prop);
if (decl.prop === 'transition' || decl.prop === 'transition-property') {
_this.prefixes.transition.remove(decl);
}
if ((ref1 = _this.prefixes.remove[decl.prop]) != null ? ref1.remove : void 0) {
notHack = _this.prefixes.group(decl).down(function(other) {
return _this.prefixes.normalize(other.prop) === unprefixed;
});
if (unprefixed === 'flex-flow') {
notHack = true;
}
if (notHack && !_this.withHackValue(decl)) {
if (decl.raw('before').indexOf("\n") > -1) {
_this.reduceSpaces(decl);
}
rule.removeChild(i);
return;
}
}
ref2 = _this.prefixes.values('remove', unprefixed);
for (k = 0, len1 = ref2.length; k < len1; k++) {
checker = ref2[k];
if (checker.check(decl.value)) {
unprefixed = checker.unprefixed;
notHack = _this.prefixes.group(decl).down(function(other) {
return other.value.indexOf(unprefixed) !== -1;
});
if (notHack) {
rule.removeChild(i);
return;
} else if (checker.clean) {
checker.clean(decl);
return;
}
}
}
};
})(this));
};
Processor.prototype.withHackValue = function(decl) {
return decl.prop === '-webkit-background-clip' && decl.value === 'text';
};
Processor.prototype.disabled = function(node) {
var other, status;
if (this.prefixes.options.grid === false && node.type === 'decl') {
if (node.prop === 'display' && node.value.indexOf('grid') !== -1) {
return true;
}
if (node.prop.indexOf('grid') !== -1 || node.prop === 'justify-items') {
return true;
}
}
if (this.prefixes.options.flexbox === false && node.type === 'decl') {
if (node.prop === 'display' && node.value.indexOf('flex') !== -1) {
return true;
}
other = ['order', 'justify-content', 'align-items', 'align-content'];
if (node.prop.indexOf('flex') !== -1 || other.indexOf(node.prop) !== -1) {
return true;
}
}
if (node._autoprefixerDisabled != null) {
return node._autoprefixerDisabled;
} else if (node.nodes) {
status = void 0;
node.each(function(i) {
if (i.type !== 'comment') {
return;
}
if (/(!\s*)?autoprefixer:\s*off/i.test(i.text)) {
status = false;
return false;
} else if (/(!\s*)?autoprefixer:\s*on/i.test(i.text)) {
status = true;
return false;
}
});
return node._autoprefixerDisabled = status != null ? !status : node.parent ? this.disabled(node.parent) : false;
} else if (node.parent) {
return node._autoprefixerDisabled = this.disabled(node.parent);
} else {
return false;
}
};
Processor.prototype.reduceSpaces = function(decl) {
var diff, parts, prevMin, stop;
stop = false;
this.prefixes.group(decl).up(function(other) {
return stop = true;
});
if (stop) {
return;
}
parts = decl.raw('before').split("\n");
prevMin = parts[parts.length - 1].length;
diff = false;
return this.prefixes.group(decl).down(function(other) {
var last;
parts = other.raw('before').split("\n");
last = parts.length - 1;
if (parts[last].length > prevMin) {
if (diff === false) {
diff = parts[last].length - prevMin;
}
parts[last] = parts[last].slice(0, -diff);
return other.raws.before = parts.join("\n");
}
});
};
Processor.prototype.displayType = function(decl) {
var i, j, len, ref;
ref = decl.parent.nodes;
for (j = 0, len = ref.length; j < len; j++) {
i = ref[j];
if (i.prop === 'display') {
if (i.value.indexOf('flex') !== -1) {
return 'flex';
} else if (i.value.indexOf('grid') !== -1) {
return 'grid';
}
}
}
return false;
};
return Processor;
})();
module.exports = Processor;
}).call(this);