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Prism.languages['markup-templating'] = {};
Object.defineProperties(Prism.languages['markup-templating'], {
buildPlaceholders: {
// Tokenize all inline templating expressions matching placeholderPattern
// If the replaceFilter function is provided, it will be called with every match.
// If it returns false, the match will not be replaced.
value: function (env, language, placeholderPattern, replaceFilter) {
if (env.language !== language) {
return;
}
env.tokenStack = [];
env.code = env.code.replace(placeholderPattern, function(match) {
if (typeof replaceFilter === 'function' && !replaceFilter(match)) {
return match;
}
var i = env.tokenStack.length;
// Check for existing strings
while (env.code.indexOf('___' + language.toUpperCase() + i + '___') !== -1)
++i;
// Create a sparse array
env.tokenStack[i] = match;
return '___' + language.toUpperCase() + i + '___';
});
// Switch the grammar to markup
env.grammar = Prism.languages.markup;
}
},
tokenizePlaceholders: {
// Replace placeholders with proper tokens after tokenizing
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);
var walkTokens = function (tokens) {
if (j >= keys.length) {
return;
}
for (var i = 0; i < tokens.length; i++) {
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 index = s.indexOf('___' + language.toUpperCase() + k + '___');
if (index > -1) {
++j;
var before = s.substring(0, index);
var middle = new Prism.Token(language, Prism.tokenize(t, env.grammar, language), 'language-' + language, t);
var after = s.substring(index + ('___' + language.toUpperCase() + k + '___').length);
var replacement;
if (before || after) {
replacement = [before, middle, after].filter(function (v) { return !!v; });
walkTokens(replacement);
} else {
replacement = middle;
}
if (typeof token === 'string') {
Array.prototype.splice.apply(tokens, [i, 1].concat(replacement));
} else {
token.content = replacement;
}
if (j >= keys.length) {
break;
}
}
} else if (token.content && typeof token.content !== 'string') {
walkTokens(token.content);
}
}
};
walkTokens(env.tokens);
}
}
});
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