Primer for CodeMirror mode abuse

codemirror-abuse-primer.js

var code = "function func_name() { var something = 'abc'; return 1; }";

var js_mode = CodeMirror.modes["javascript"]({}, {});
var state = js_mode.startState();
var stream = new CodeMirror.StringStream(code);

var style = null;

while(!stream.eol()) {
    style = js_mode.token(stream, state);
    console.log(style + ": " + code.slice(stream.start, stream.pos));
    stream.start = stream.pos;
}

// See https://github.com/marijnh/CodeMirror2/blob/master/lib/codemirror.js#L2524
// Note this is one line only