Comments (1)
It's actually not that hard
const esquery = require("esquery");
function stringify(selector) {
switch (selector.type) {
case "wildcard":
return "*";
case "identifier":
return selector.value;
case "field":
return "." + selector.name.split(".");
case "matches":
return ":matches(" + selector.selectors.map(stringify).join(", ") + ")";
case "compound":
return selector.selectors.map(stringify).join("");
case "not":
return ":not(" + selector.selectors.map(stringify).join(", ") + ")";
case "has":
return ":has(" + selector.selectors.map(stringify).join(", ") + ")";
case "child":
return stringify(selector.left) + " > " + stringify(selector.right);
case "descendant":
return stringify(selector.left) + " " + stringify(selector.right);
case "attribute": {
const parts = ["[", selector.name];
if (selector.operator) {
parts.push(selector.operator);
if (selector.value.type === "regexp") {
parts.push(selector.value.value.toString());
} else if (selector.value.type === "literal") {
parts.push(`${selector.value.value}`);
} else if (selector.value.type === "type") {
parts.push("type(" + selector.value.value + ")");
}
}
return [...parts, "]"].join("");
}
case "sibling":
return stringify(selector.left) + " ~ " + stringify(selector.right);
case "adjacent":
return stringify(selector.left) + " + " + stringify(selector.right);
case "nth-child":
return ":nth-child(" + selector.index.value + ")";
case "nth-last-child":
return ":nth-last-child(" + selector.index.value + ")";
case "class":
return ":" + selector.name;
}
}
console.log(stringify(esquery.parse("aaa.bbb[ccc=111]:statement > eee:matches(* ~ ttt + ddd :not(ee, yy[a])), *:first-child")));
// :matches(aaa.bbb[ccc=111]:statement > eee:matches(* ~ ttt + ddd :not(ee, yy[a])), *:nth-child(1))
But it will replace top level matches
with :matches
and first-child
/last-child
with :nth-child(...)
. Also it will remove all extra spaces. (limitations of AST-based codegen)
from esquery.
Related Issues (20)
- Do not bundle estraverse dependency? HOT 1
- Demo: support for different parsers? HOT 4
- Support back-references with wildcards
- Crash on optional chaining HOT 3
- Feature Request: Add support for custom visitor keys. HOT 2
- Change match order to avoid inefficient comparisons HOT 1
- Question: How can I match a specific child of a parent? HOT 1
- Proposal: Support check types HOT 3
- `:has(selector)` matches nodes matched by `selector` HOT 1
- TypeError: esquery.parse is not a function
- Attribute value doesn't support empty array ([]) HOT 1
- Feature Request: Add `:is` as alias for `:matches`
- Building esquery using sample code
- Array selector HOT 7
- Python port
- :has(> child) is not supported HOT 4
- eslint crash when upgrading to 1.4.1 HOT 13
- how to use esquery with ts-morph? HOT 2
- Help with array null child selector HOT 3
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from esquery.