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[css|less|sass|scss] Add support for slotted() pseudo-element #274

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merged 1 commit into from
Aug 28, 2017
Merged

[css|less|sass|scss] Add support for slotted() pseudo-element #274

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116 changes: 112 additions & 4 deletions src/css/parse.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2003,25 +2003,133 @@ function getPseudo() {
function checkPseudoe(i) {
let l;

if (i >= tokensLength || tokens[i++].type !== TokenType.Colon ||
i >= tokensLength || tokens[i++].type !== TokenType.Colon) return 0;
// Check `::`
if (i >= tokensLength || tokens[i].type !== TokenType.Colon ||
i >= tokensLength || tokens[i + 1].type !== TokenType.Colon) return 0;

return (l = checkIdent(i)) ? l + 2 : 0;
if (l = checkPseudoElement1(i)) tokens[i].pseudoElementType = 1;
else if (l = checkPseudoElement2(i)) tokens[i].pseudoElementType = 2;
else return 0;

return l;
}

/**
* @return {Node}
*/
function getPseudoe() {
const childType = tokens[pos].pseudoElementType;
if (childType === 1) return getPseudoElement1();
if (childType === 2) return getPseudoElement2();
}

/**
* (1) `::slotted(selector)`
* (2) `::slotted(selector, selector)`
*/
function checkPseudoElement1(i) {
const start = i;
let l;

// Skip `::`.
i += 2;

if (i >= tokensLength) return 0;

if (l = checkIdent(i)) i += l;
else return 0;

if (i >= tokensLength ||
tokens[i].type !== TokenType.LeftParenthesis) return 0;

const right = tokens[i].right;

// Skip `(`.
i++;

if (l = checkSC(i)) i += l;

if (l = checkSelectorsGroup(i)) i += l;
else return 0;

if (l = checkSC(i)) i += l;

if (i !== right) return 0;

// Skip `)`.
i++;

return i - start;
}

/**
* (1) `::slotted(selector)`
* (2) `::slotted(selector, selector)`
*/
function getPseudoElement1() {
const type = NodeType.PseudoeType;
const token = tokens[pos];
const line = token.ln;
const column = token.col;
const content = [];

// Skip `::`.
pos += 2;

const content = [getIdent()];
content.push(getIdent());

{
const type = NodeType.ArgumentsType;
const token = tokens[pos];
const line = token.ln;
const column = token.col;

// Skip `(`.
pos++;

const selectorContent = [].concat(
getSC(),
getSelectorsGroup(),
getSC()
);

const end = getLastPosition(selectorContent, line, column, 1);
const args = newNode(type, selectorContent, line, column, end);
content.push(args);

// Skip `)`.
pos++;
}

return newNode(type, content, line, column);
}

function checkPseudoElement2(i) {
const start = i;
let l;

// Skip `::`.
i += 2;

if (l = checkIdent(i)) i += l;
else return 0;

return start - i;
}

/**
* @return {Node}
*/
function getPseudoElement2() {
const type = NodeType.PseudoeType;
const token = tokens[pos];
const line = token.ln;
const column = token.col;

// Skip `::`.
pos += 2;

let content = [getIdent()];

return newNode(type, content, line, column);
}
Expand Down
116 changes: 112 additions & 4 deletions src/less/parse.js
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2671,16 +2671,124 @@ function getPseudo() {
function checkPseudoe(i) {
let l;

if (i >= tokensLength || tokens[i++].type !== TokenType.Colon ||
i >= tokensLength || tokens[i++].type !== TokenType.Colon) return 0;
// Check `::`
if (i >= tokensLength || tokens[i].type !== TokenType.Colon ||
i + 1 >= tokensLength || tokens[i + 1].type !== TokenType.Colon) return 0;

return (l = checkInterpolatedVariable(i) || checkIdent(i)) ? l + 2 : 0;
if (l = checkPseudoElement1(i)) tokens[i].pseudoElementType = 1;
else if (l = checkPseudoElement2(i)) tokens[i].pseudoElementType = 2;
else return 0;

return l;
}

/**
* @returns {Array}
* @returns {Node}
*/
function getPseudoe() {
const childType = tokens[pos].pseudoElementType;
if (childType === 1) return getPseudoElement1();
if (childType === 2) return getPseudoElement2();
}

/**
* (1) `::slotted(selector)`
* (2) `::slotted(selector, selector)`
*/
function checkPseudoElement1(i) {
const start = i;
let l;

// Skip `::`.
i += 2;

if (i >= tokensLength) return 0;

if (l = checkIdent(i)) i += l;
else return 0;

if (i >= tokensLength ||
tokens[i].type !== TokenType.LeftParenthesis) return 0;

const right = tokens[i].right;

// Skip `(`.
i++;

if (l = checkSC(i)) i += l;

if (l = checkSelectorsGroup(i)) i += l;
else return 0;

if (l = checkSC(i)) i += l;

if (i !== right) return 0;

// Skip `)`.
i++;

return i - start;
}

/**
* (1) `::slotted(selector)`
* (2) `::slotted(selector, selector)`
*/
function getPseudoElement1() {
const type = NodeType.PseudoeType;
const token = tokens[pos];
const line = token.ln;
const column = token.col;
const content = [];

// Skip `::`.
pos += 2;

content.push(getIdent());

{
const type = NodeType.ArgumentsType;
const token = tokens[pos];
const line = token.ln;
const column = token.col;

// Skip `(`.
pos++;

const selectorContent = [].concat(
getSC(),
getSelectorsGroup(),
getSC()
);

const end = getLastPosition(selectorContent, line, column, 1);
const args = newNode(type, selectorContent, line, column, end);
content.push(args);

// Skip `)`.
pos++;
}

return newNode(type, content, line, column);
}

function checkPseudoElement2(i) {
const start = i;
let l;

// Skip `::`.
i += 2;

if (l = checkInterpolatedVariable(i) || checkIdent(i)) i += l;
else return 0;

return start - i;
}

/**
* @returns {Array}
*/
function getPseudoElement2() {
const type = NodeType.PseudoeType;
const token = tokens[pos];
const line = token.ln;
Expand Down
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