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Code Issues Projects Releases Packages Wiki Activity Actions 7

Simplify handling of internal lineMetadata array (slightly faster now).

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David Anson 2019-01-12 16:29:10 -08:00
parent 51a57a07c8
commit b77dd5ccd3
1 changed files with 11 additions and 24 deletions
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35
lib/shared.js
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@ -137,28 +137,24 @@ function makeTokenCache(params) {
} }
// Initialize line metadata array // Initialize line metadata array
// 0x7: inCode const lineMetadata = params.lines.map(function mapLine(line, index) {
// 0x6: onFence (start) return [ line, index, false, 0, false ];
// 0x2: onFence (end) });
// 0x1: code body
// 0x8: inTable
const lineMetadata = new Array(params.lines.length);
lineMetadata.fill(0);
filterTokens(params, "fence", function forToken(token) { filterTokens(params, "fence", function forToken(token) {
lineMetadata[token.map[0]] = 6; lineMetadata[token.map[0]][3] = 1;
lineMetadata[token.map[1] - 1] = 2; lineMetadata[token.map[1] - 1][3] = -1;
for (let i = token.map[0] + 1; i < token.map[1] - 1; i++) { for (let i = token.map[0] + 1; i < token.map[1] - 1; i++) {
lineMetadata[i] = 1; lineMetadata[i][2] = true;
} }
}); });
filterTokens(params, "code_block", function forToken(token) { filterTokens(params, "code_block", function forToken(token) {
for (let i = token.map[0]; i < token.map[1]; i++) { for (let i = token.map[0]; i < token.map[1]; i++) {
lineMetadata[i] = 1; lineMetadata[i][2] = true;
} }
}); });
filterTokens(params, "table_open", function forToken(token) { filterTokens(params, "table_open", function forToken(token) {
for (let i = token.map[0]; i < token.map[1]; i++) { for (let i = token.map[0]; i < token.map[1]; i++) {
lineMetadata[i] += 8; lineMetadata[i][4] = true;
} }
}); });
@ -211,18 +207,9 @@ module.exports.makeTokenCache = makeTokenCache;
// Calls the provided function for each line (with context) // Calls the provided function for each line (with context)
module.exports.forEachLine = function forEachLine(callback) { module.exports.forEachLine = function forEachLine(callback) {
// Invoke callback tokenCache.lineMetadata.forEach(function forMetadata(metadata) {
tokenCache.params.lines.forEach(function forLine(line, lineIndex) { // Parameters: line, lineIndex, inCode, onFence, inTable
const metadata = tokenCache.lineMetadata[lineIndex]; callback.apply(this, metadata);
const inCode = !!(metadata & 7);
const onFence = (((metadata & 6) >> 1) || 2) - 2;
const inTable = !!(metadata & 8);
callback(
line,
lineIndex,
inCode,
onFence,
inTable);
}); });
}; };