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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.TokenMap = void 0;
var _t = require("@babel/types");
const {
traverseFast,
VISITOR_KEYS
} = _t;
class TokenMap {
constructor(ast, tokens, source) {
this._tokens = void 0;
this._source = void 0;
this._nodesToTokenIndexes = new Map();
this._nodesOccurrencesCountCache = new Map();
this._tokensCache = new Map();
this._tokens = tokens;
this._source = source;
traverseFast(ast, node => {
const indexes = this._getTokensIndexesOfNode(node);
if (indexes.length > 0) this._nodesToTokenIndexes.set(node, indexes);
});
this._tokensCache = null;
}
has(node) {
return this._nodesToTokenIndexes.has(node);
}
getIndexes(node) {
return this._nodesToTokenIndexes.get(node);
}
find(node, condition) {
const indexes = this._nodesToTokenIndexes.get(node);
if (indexes) {
for (let k = 0; k < indexes.length; k++) {
const index = indexes[k];
const tok = this._tokens[index];
if (condition(tok, index)) return tok;
}
}
return null;
}
findLastIndex(node, condition) {
const indexes = this._nodesToTokenIndexes.get(node);
if (indexes) {
for (let k = indexes.length - 1; k >= 0; k--) {
const index = indexes[k];
const tok = this._tokens[index];
if (condition(tok, index)) return index;
}
}
return -1;
}
findMatching(node, test, occurrenceCount = 0) {
const indexes = this._nodesToTokenIndexes.get(node);
if (indexes) {
let i = 0;
const count = occurrenceCount;
if (count > 1) {
const cache = this._nodesOccurrencesCountCache.get(node);
if (cache && cache.test === test && cache.count < count) {
i = cache.i + 1;
occurrenceCount -= cache.count + 1;
}
}
for (; i < indexes.length; i++) {
const tok = this._tokens[indexes[i]];
if (this.matchesOriginal(tok, test)) {
if (occurrenceCount === 0) {
if (count > 0) {
this._nodesOccurrencesCountCache.set(node, {
test,
count,
i
});
}
return tok;
}
occurrenceCount--;
}
}
}
return null;
}
matchesOriginal(token, test) {
if (token.end - token.start !== test.length) return false;
if (token.value != null) return token.value === test;
return this._source.startsWith(test, token.start);
}
startMatches(node, test) {
const indexes = this._nodesToTokenIndexes.get(node);
if (!indexes) return false;
const tok = this._tokens[indexes[0]];
if (tok.start !== node.start) return false;
return this.matchesOriginal(tok, test);
}
endMatches(node, test) {
const indexes = this._nodesToTokenIndexes.get(node);
if (!indexes) return false;
const tok = this._tokens[indexes[indexes.length - 1]];
if (tok.end !== node.end) return false;
return this.matchesOriginal(tok, test);
}
_getTokensIndexesOfNode(node) {
if (node.start == null || node.end == null) return [];
const {
first,
last
} = this._findTokensOfNode(node, 0, this._tokens.length - 1);
let low = first;
const children = childrenIterator(node);
if ((node.type === "ExportNamedDeclaration" || node.type === "ExportDefaultDeclaration") && node.declaration && node.declaration.type === "ClassDeclaration") {
children.next();
}
const indexes = [];
for (const child of children) {
if (child == null) continue;
if (child.start == null || child.end == null) continue;
const childTok = this._findTokensOfNode(child, low, last);
const high = childTok.first;
for (let k = low; k < high; k++) indexes.push(k);
low = childTok.last + 1;
}
for (let k = low; k <= last; k++) indexes.push(k);
return indexes;
}
_findTokensOfNode(node, low, high) {
const cached = this._tokensCache.get(node);
if (cached) return cached;
const first = this._findFirstTokenOfNode(node.start, low, high);
const last = this._findLastTokenOfNode(node.end, first, high);
this._tokensCache.set(node, {
first,
last
});
return {
first,
last
};
}
_findFirstTokenOfNode(start, low, high) {
while (low <= high) {
const mid = high + low >> 1;
if (start < this._tokens[mid].start) {
high = mid - 1;
} else if (start > this._tokens[mid].start) {
low = mid + 1;
} else {
return mid;
}
}
return low;
}
_findLastTokenOfNode(end, low, high) {
while (low <= high) {
const mid = high + low >> 1;
if (end < this._tokens[mid].end) {
high = mid - 1;
} else if (end > this._tokens[mid].end) {
low = mid + 1;
} else {
return mid;
}
}
return high;
}
}
exports.TokenMap = TokenMap;
function* childrenIterator(node) {
if (node.type === "TemplateLiteral") {
yield node.quasis[0];
for (let i = 1; i < node.quasis.length; i++) {
yield node.expressions[i - 1];
yield node.quasis[i];
}
return;
}
const keys = VISITOR_KEYS[node.type];
for (const key of keys) {
const child = node[key];
if (!child) continue;
if (Array.isArray(child)) {
yield* child;
} else {
yield child;
}
}
}
//# sourceMappingURL=token-map.js.map
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