Prism.languages.dart=Prism.languages.extend("clike",{string:[/r?("""|''')[\s\S]*?\1/,/r?("|')(\\?.)*?\1/],keyword:[/\b(?:async|sync|yield)\*/,/\b(?:abstract|assert|async|await|break|case|catch|class|const|continue|default|deferred|do|dynamic|else|enum|export|external|extends|factory|final|finally|for|get|if|implements|import|in|library|new|null|operator|part|rethrow|return|set|static|super|switch|this|throw|try|typedef|var|void|while|with|yield)\b/],operator:/\bis!|\b(?:as|is)\b|\+\+|--|&&|\|\||<<=?|>>=?|~(?:\/=?)?|[+\-*\/%&^|=!<>]=?|\?/}),Prism.languages.insertBefore("dart","function",{metadata:{pattern:/@\w+/,alias:"symbol"}});