### Stubble constructions `{{}}` - getter for property from `data` by it's `path`. If property by this `path` is exists then `{{}}` will be replaced by a string representation of its value `{{$ []}}` - simple helper-function call. Will be replaced by a helper's result `{{# []}}{{/}}` - block helper-function call. Also will be replaced with result of helper call. The second parameter of helper function in this case is compile function with block's 'body' as template `{{#if }}{{/if}}` - is statement block. If `` is true, will be replaced with body. Body will be compiled too. `{{#with }}{{/with}}` - allows to pass a part of context data and work with it directly `{{#each }}{{/each}}` - loop for a context data by path. data should has a type of `array` or `map` ### Path requirements `path` is a string, starts with an alphabet character and can consist of: - lowercase or uppercase `latin characters` - `numbers` - `underscore` - `dot` as path divider. It's mean that `A.B.C` will return `data["A"]["B"]["C"]`, not a `data["A.B.C"]` Other character are prohibited Restrictions: - Path can't begin with `dot` - Path can't end with `dot` ### Helper name requirements Helper `name` is a string, starts with an alphabet character and can consist of: - lowercase or uppercase `latin characters` - `numbers` - `underscore` ### Attributes requirements ### IF block condition requirements `condition` for `#if` must satisfy the following pattern - `(|)`, where: - `` - path to data in context - `` - conditional operator. May be `==`, `!=`, `<=`, `>=`, `<`, `>`, - `` - test value - number, string or bool: - The number is specified without quotes. - If the number is float, then the `dot` must be used as a separator - String values are indicated in double or single quotes - For bool values, `true` or `false` values are used. ### Blocks body requirements There are no special requirements for the body at the moment, but I think the use of special characters, as well as unprintable characters, may not affect the performance of the template engine in the best way.