Prism.languages.groovy = Prism.languages.extend('clike', {
	'keyword': /\b(as|def|in|abstract|assert|boolean|break|byte|case|catch|char|class|const|continue|default|do|double|else|enum|extends|final|finally|float|for|goto|if|implements|import|instanceof|int|interface|long|native|new|package|private|protected|public|return|short|static|strictfp|super|switch|synchronized|this|throw|throws|transient|try|void|volatile|while)\b/g,
	'string': /("""|''')[\W\w]*?\1|("|'|\/)[\W\w]*?\2/g,
	'number': /\b0b[01_]+\b|\b0x[\da-f_]+(\.[\da-f_p\-]+)?\b|\b[\d_]+(\.[\d_]+[e]?[\d]*)?[glidf]\b|[\d_]+(\.[\d_]+)?\b/gi,
	'operator': /={0,2}~|\?\.|\*?\.@|\.&|\.(?=\w)|\.{2}(<)?(?=\w)|->|\?:|[-+]{1,2}|!|<=>|(>){1,3}|(<){1,2}|={1,2}|(&){1,2}|\|{1,2}|\?|\*{1,2}|\/|\^|%/g,
	'punctuation': /\.+|[{}[\];(),:$]/g,
	'annotation': /@\w+/
});

Prism.languages.insertBefore('groovy', 'punctuation', {
	'spock-block': /\b(setup|given|when|then|and|cleanup|expect|where):/g
});

Prism.hooks.add('wrap', function(env) {
	if (env.language === 'groovy' && env.type === 'string') {
		var delimiter = env.content[0];

		if (delimiter != "'") {
			env.content = Prism.highlight(env.content, {
				'expression': {
					pattern: /([^\\])(\$(\{.*?\}|[\w\.]*))/,
					lookbehind: true,
					inside: Prism.languages.groovy
				}
			});

			env.classes.push(delimiter === '/' ? 'regex' : 'gstring');
		}
	}
});