124 lines
3.5 KiB
JavaScript
124 lines
3.5 KiB
JavaScript
(function (Prism) {
|
|
|
|
/**
|
|
* Returns the placeholder for the given language id and index.
|
|
*
|
|
* @param {string} language
|
|
* @param {string|number} index
|
|
* @returns {string}
|
|
*/
|
|
function getPlaceholder(language, index) {
|
|
return '___' + language.toUpperCase() + index + '___';
|
|
}
|
|
|
|
Object.defineProperties(Prism.languages['markup-templating'] = {}, {
|
|
buildPlaceholders: {
|
|
/**
|
|
* Tokenize all inline templating expressions matching `placeholderPattern`.
|
|
*
|
|
* If `replaceFilter` is provided, only matches of `placeholderPattern` for which `replaceFilter` returns
|
|
* `true` will be replaced.
|
|
*
|
|
* @param {object} env The environment of the `before-tokenize` hook.
|
|
* @param {string} language The language id.
|
|
* @param {RegExp} placeholderPattern The matches of this pattern will be replaced by placeholders.
|
|
* @param {(match: string) => boolean} [replaceFilter]
|
|
*/
|
|
value: function (env, language, placeholderPattern, replaceFilter) {
|
|
if (env.language !== language) {
|
|
return;
|
|
}
|
|
|
|
var tokenStack = env.tokenStack = [];
|
|
|
|
env.code = env.code.replace(placeholderPattern, function (match) {
|
|
if (typeof replaceFilter === 'function' && !replaceFilter(match)) {
|
|
return match;
|
|
}
|
|
var i = tokenStack.length;
|
|
var placeholder;
|
|
|
|
// Check for existing strings
|
|
while (env.code.indexOf(placeholder = getPlaceholder(language, i)) !== -1) {
|
|
++i;
|
|
}
|
|
|
|
// Create a sparse array
|
|
tokenStack[i] = match;
|
|
|
|
return placeholder;
|
|
});
|
|
|
|
// Switch the grammar to markup
|
|
env.grammar = Prism.languages.markup;
|
|
}
|
|
},
|
|
tokenizePlaceholders: {
|
|
/**
|
|
* Replace placeholders with proper tokens after tokenizing.
|
|
*
|
|
* @param {object} env The environment of the `after-tokenize` hook.
|
|
* @param {string} language The language id.
|
|
*/
|
|
value: function (env, language) {
|
|
if (env.language !== language || !env.tokenStack) {
|
|
return;
|
|
}
|
|
|
|
// Switch the grammar back
|
|
env.grammar = Prism.languages[language];
|
|
|
|
var j = 0;
|
|
var keys = Object.keys(env.tokenStack);
|
|
|
|
function walkTokens(tokens) {
|
|
for (var i = 0; i < tokens.length; i++) {
|
|
// all placeholders are replaced already
|
|
if (j >= keys.length) {
|
|
break;
|
|
}
|
|
|
|
var token = tokens[i];
|
|
if (typeof token === 'string' || (token.content && typeof token.content === 'string')) {
|
|
var k = keys[j];
|
|
var t = env.tokenStack[k];
|
|
var s = typeof token === 'string' ? token : token.content;
|
|
var placeholder = getPlaceholder(language, k);
|
|
|
|
var index = s.indexOf(placeholder);
|
|
if (index > -1) {
|
|
++j;
|
|
|
|
var before = s.substring(0, index);
|
|
var middle = new Prism.Token(language, Prism.tokenize(t, env.grammar), 'language-' + language, t);
|
|
var after = s.substring(index + placeholder.length);
|
|
|
|
var replacement = [];
|
|
if (before) {
|
|
replacement.push.apply(replacement, walkTokens([before]));
|
|
}
|
|
replacement.push(middle);
|
|
if (after) {
|
|
replacement.push.apply(replacement, walkTokens([after]));
|
|
}
|
|
|
|
if (typeof token === 'string') {
|
|
tokens.splice.apply(tokens, [i, 1].concat(replacement));
|
|
} else {
|
|
token.content = replacement;
|
|
}
|
|
}
|
|
} else if (token.content /* && typeof token.content !== 'string' */) {
|
|
walkTokens(token.content);
|
|
}
|
|
}
|
|
|
|
return tokens;
|
|
}
|
|
|
|
walkTokens(env.tokens);
|
|
}
|
|
}
|
|
});
|
|
|
|
}(Prism));
|