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feat: Add support for most CSS nesting rules #37

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Merged
merged 1 commit into from
Apr 22, 2025
Merged

feat: Add support for most CSS nesting rules #37

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368 changes: 358 additions & 10 deletions fixtures/ast/rule/nesting.json
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Original file line number Diff line number Diff line change
Expand Up @@ -589,9 +589,9 @@
}
}
},
"don't parse nested rule when it not started with &": {
"source": ".foo{ .bar & { color: green; }; div:hover { color: red; } }",
"generate": ".foo{.bar & { color: green; };div:hover { color: red; }}",
"nested class selector": {
"source": "s{ p:v;.t { a:b } }",
"generate": "s{p:v;.t{a:b}}",
"ast": {
"type": "Rule",
"prelude": {
Expand All @@ -601,8 +601,242 @@
"type": "Selector",
"children": [
{
"type": "ClassSelector",
"name": "foo"
"type": "TypeSelector",
"name": "s"
}
]
}
]
},
"block": {
"type": "Block",
"children": [
{
"type": "Declaration",
"important": false,
"property": "p",
"value": {
"type": "Value",
"children": [
{
"type": "Identifier",
"name": "v"
}
]
}
},
{
"type": "Rule",
"prelude": {
"type": "SelectorList",
"children": [
{
"type": "Selector",
"children": [
{
"type": "ClassSelector",
"name": "t"
}
]
}
]
},
"block": {
"type": "Block",
"children": [
{
"type": "Declaration",
"important": false,
"property": "a",
"value": {
"type": "Value",
"children": [
{
"type": "Identifier",
"name": "b"
}
]
}
}
]
}
}
]
}
}
},
"nested ID selector": {
"source": "s{ p:v; #t { a:b } }",
"generate": "s{p:v;#t{a:b}}",
"ast": {
"type": "Rule",
"prelude": {
"type": "SelectorList",
"children": [
{
"type": "Selector",
"children": [
{
"type": "TypeSelector",
"name": "s"
}
]
}
]
},
"block": {
"type": "Block",
"children": [
{
"type": "Declaration",
"important": false,
"property": "p",
"value": {
"type": "Value",
"children": [
{
"type": "Identifier",
"name": "v"
}
]
}
},
{
"type": "Rule",
"prelude": {
"type": "SelectorList",
"children": [
{
"type": "Selector",
"children": [
{
"type": "IdSelector",
"name": "t"
}
]
}
]
},
"block": {
"type": "Block",
"children": [
{
"type": "Declaration",
"important": false,
"property": "a",
"value": {
"type": "Value",
"children": [
{
"type": "Identifier",
"name": "b"
}
]
}
}
]
}
}
]
}
}
},
"nested attribute selector": {
"source": "s{ p:v; [data-foo] { a: b}}",
"generate": "s{p:v;[data-foo]{a:b}}",
"ast": {
"type": "Rule",
"prelude": {
"type": "SelectorList",
"children": [
{
"type": "Selector",
"children": [
{
"type": "TypeSelector",
"name": "s"
}
]
}
]
},
"block": {
"type": "Block",
"children": [
{
"type": "Declaration",
"important": false,
"property": "p",
"value": {
"type": "Value",
"children": [
{
"type": "Identifier",
"name": "v"
}
]
}
},
{
"type": "Rule",
"prelude": {
"type": "SelectorList",
"children": [
{
"type": "Selector",
"children": [
{
"type": "AttributeSelector",
"name": {
"type": "Identifier",
"name": "data-foo"
},
"matcher": null,
"value": null,
"flags": null
}
]
}
]
},
"block": {
"type": "Block",
"children": [
{
"type": "Declaration",
"important": false,
"property": "a",
"value": {
"type": "Value",
"children": [
{
"type": "Identifier",
"name": "b"
}
]
}
}
]
}
}
]
}
}
},
"nested universal selector": {
"source": "s{ p: v;* {a:b } }",
"generate": "s{p:v;*{a:b}}",
"ast": {
"type": "Rule",
"prelude": {
"type": "SelectorList",
"children": [
{
"type": "Selector",
"children": [
{
"type": "TypeSelector",
"name": "s"
}
]
}
Expand All @@ -612,16 +846,130 @@
"type": "Block",
"children": [
{
"type": "Raw",
"value": ".bar & { color: green; };"
"type": "Declaration",
"important": false,
"property": "p",
"value": {
"type": "Value",
"children": [
{
"type": "Identifier",
"name": "v"
}
]
}
},
{
"type": "Rule",
"prelude": {
"type": "SelectorList",
"children": [
{
"type": "Selector",
"children": [
{
"type": "TypeSelector",
"name": "*"
}
]
}
]
},
"block": {
"type": "Block",
"children": [
{
"type": "Declaration",
"important": false,
"property": "a",
"value": {
"type": "Value",
"children": [
{
"type": "Identifier",
"name": "b"
}
]
}
}
]
}
}
]
}
}
},
"nested pseudoclass selector": {
"source": "s { p:v; :hover { a: b } }",
"generate": "s{p:v;:hover{a:b}}",
"ast": {
"type": "Rule",
"prelude": {
"type": "SelectorList",
"children": [
{
"type": "Selector",
"children": [
{
"type": "TypeSelector",
"name": "s"
}
]
}
]
},
"block": {
"type": "Block",
"children": [
{
"type": "Declaration",
"important": false,
"property": "div",
"property": "p",
"value": {
"type": "Raw",
"value": "hover { color: red; }"
"type": "Value",
"children": [
{
"type": "Identifier",
"name": "v"
}
]
}
},
{
"type": "Rule",
"prelude": {
"type": "SelectorList",
"children": [
{
"type": "Selector",
"children": [
{
"type": "PseudoClassSelector",
"name": "hover",
"children": null
}
]
}
]
},
"block": {
"type": "Block",
"children": [
{
"type": "Declaration",
"important": false,
"property": "a",
"value": {
"type": "Value",
"children": [
{
"type": "Identifier",
"name": "b"
}
]
}
}
]
}
}
]
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