ce4c83ff
 wxy
初始提交
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"use strict";
var stringify;
var regexpu = require("regexpu-core");
var identifierEscapeRegexp = new RegExp(
regexpu("(^[^A-Za-z_\\-\\u{00a0}-\\u{10ffff}]|^\\-\\-|[^A-Za-z_0-9\\-\\u{00a0}-\\u{10ffff}])", "ug"),
"g"
);
function escape(str, identifier) {
if(str === "*") {
return "*";
}
if (identifier) {
return str.replace(identifierEscapeRegexp, "\\$1");
} else {
return str.replace(/(^[^A-Za-z_\\-]|^\-\-|[^A-Za-z_0-9\\-])/g, "\\$1");
}
}
function stringifyWithoutBeforeAfter(tree) {
switch(tree.type) {
case "selectors":
return tree.nodes.map(stringify).join(",");
case "selector":
return tree.nodes.map(stringify).join("");
case "element":
return (typeof tree.namespace === "string" ? escape(tree.namespace) + "|" : "") + escape(tree.name);
case "class":
return "." + escape(tree.name, true);
case "id":
return "#" + escape(tree.name, true);
case "attribute":
return "[" + tree.content + "]";
case "spacing":
return tree.value;
case "pseudo-class":
return ":" + escape(tree.name) + (typeof tree.content === "string" ? "(" + tree.content + ")" : "");
case "nested-pseudo-class":
return ":" + escape(tree.name) + "(" + tree.nodes.map(stringify).join(",") + ")";
case "pseudo-element":
return "::" + escape(tree.name);
case "universal":
return (typeof tree.namespace === "string" ? escape(tree.namespace) + "|" : "") + "*";
case "operator":
return tree.operator;
case "comment":
return "/*" + tree.content + "*/";
case "invalid":
return tree.value;
}
}
stringify = function stringify(tree) {
var str = stringifyWithoutBeforeAfter(tree);
if(tree.before) {
str = tree.before + str;
}
if(tree.after) {
str = str + tree.after;
}
return str;
};
module.exports = stringify;
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