Word processor compatible templating system

Value substitution

Used to display value from the template data object.

• Show value under a given key: {%=key_name%}
• Show value under a given key in a map under a given key: {%=outer_key.inner_key %}

Conditional blocks

Put a value between conditional blocks to toggle its visibility depending on a value in the data object.

• if-then branching: {%if condition %}THEN part comes here {%end%}
• if-then-else branching: {%if condition %}THEN part comes here {%else%} else part comes here{%end%}

Repeating blocks

Repeat a block for each item in a list in the data object.

For example if xs is a list then the following repeats the BODY part for every item: {%for x in xs%} BODY {%end%}

The BODY part has a new binding on every iteration so you can access every element in a collection via the x iterator variable.

Function calls and arithmetic

You can call custom functions in expressions. For example: {%=coalesce(x.price, x.cost, "N/A")%}

You can also call many arithmetic operators. For example: {%= x*x+x+2%}