A bidirectional template engine that supports modifying templates by modifying output directly.
keywords: var, if, endif, elseif, for, in, endfor, separator, front, rear.
Fragment := Literal | Directive | Fragment Fragment
Directive := «var Name = Expr» | «Name = Expr» | «Expr»
| «if Expr» Fragment ElseBranch «endif»
| «for Name in Expr ForLitList» Fragment «endfor»
ElseBranch := «elseif Expr» Fragment ElseBranch
| «else» Fragment
ForLit := separator string | front string | rear string
Expr := basic arithmetic, relational, and boolean expressions
| Expr . Name | Value
Name := identifiers
Value := record, list, tuple, string, integer, and boolean values
Literal := any char sequence that does not contain «
Please install LiveT plugin in VSCode, and use it.
- load
LiveTplugin. - write template in text editor using bit2 syntax.
- click
forwardbutton to evaluates to text. - update output text through deletion, insertion, replacement (select text and right click, a popup shows a list of actions).
- click
backwardbutton to reflect changes back to template
«var no = 0»
Before: «no»
«no = no + 1»
After: «no»
«var age=19»
«var count=1»
«if age>=18»
Wow! An adult! «count»
«else»
Hi! A little boy! «count»
«endif»
«count»
«var lst=[{head:"Modeling", text:"UML"},{head:"Programming", text:"Java"}]»
«for p in lst»
<h1>«p.head»</h1>
«endfor»
«var paragraphs =[{head:"Hello", text:"Hello!"}, {head:"Farewell", text:"Good Bye!"}] »
<html>
<body>«var no = 0»«for p in paragraphs»
«if p.head != ""»«no = no + 1»<h1>«no».«p.head»</h1>«endif»
<p>
«p.text»
</p>«endfor»
</body>
</html>