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(function (Prism) {
var keywords = [
/\b(?:async|sync|yield)\*/,
/\b(?:abstract|assert|async|await|break|case|catch|class|const|continue|covariant|default|deferred|do|dynamic|else|enum|export|extends|extension|external|factory|final|finally|for|get|hide|if|implements|import|in|interface|library|mixin|new|null|on|operator|part|rethrow|return|set|show|static|super|switch|sync|this|throw|try|typedef|var|void|while|with|yield)\b/,
];
// Handles named imports, such as http.Client
var packagePrefix = /(^|[^\w.])(?:[a-z]\w*\s*\.\s*)*(?:[A-Z]\w*\s*\.\s*)*/
.source;
// based on the dart naming conventions
var className = {
pattern: RegExp(packagePrefix + /[A-Z](?:[\d_A-Z]*[a-z]\w*)?\b/.source),
lookbehind: true,
inside: {
namespace: {
pattern: /^[a-z]\w*(?:\s*\.\s*[a-z]\w*)*(?:\s*\.)?/,
inside: {
punctuation: /\./,
},
},
},
};
Prism.languages.dart = Prism.languages.extend('clike', {
'class-name': [
className,
{
// variables and parameters
// this to support class names (or generic parameters) which do not contain a lower case letter (also works for methods)
pattern: RegExp(packagePrefix + /[A-Z]\w*(?=\s+\w+\s*[;,=()])/.source),
lookbehind: true,
inside: className.inside,
},
],
keyword: keywords,
operator:
/\bis!|\b(?:as|is)\b|\+\+|--|&&|\|\||<<=?|>>=?|~(?:\/=?)?|[+\-*\/%&^|=!<>]=?|\?/,
});
Prism.languages.insertBefore('dart', 'string', {
'string-literal': {
pattern:
/r?(?:("""|''')[\s\S]*?\1|(["'])(?:\\.|(?!\2)[^\\\r\n])*\2(?!\2))/,
greedy: true,
inside: {
interpolation: {
pattern: /((?:^|[^\\])(?:\\{2})*)\$(?:\w+|\{(?:[^{}]|\{[^{}]*\})*\})/,
lookbehind: true,
inside: {
punctuation: /^\$\{?|\}$/,
expression: {
pattern: /[\s\S]+/,
inside: Prism.languages.dart,
},
},
},
string: /[\s\S]+/,
},
},
string: undefined,
});
Prism.languages.insertBefore('dart', 'class-name', {
metadata: {
pattern: /@\w+/,
alias: 'function',
},
});
Prism.languages.insertBefore('dart', 'class-name', {
generics: {
pattern:
/<(?:[\w\s,.&?]|<(?:[\w\s,.&?]|<(?:[\w\s,.&?]|<[\w\s,.&?]*>)*>)*>)*>/,
inside: {
'class-name': className,
keyword: keywords,
punctuation: /[<>(),.:]/,
operator: /[?&|]/,
},
},
});
})(Prism);
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