liveT

A bidirectional template program management environment that supports updating templates by modifying output directly.

Language Syntax

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 «

Usage of LiveT

load LiveT plugin.
write template in text editor using bit2 syntax.
click forward button to evaluates to text.
update output text through deletion, insertion, replacement (select text and right click, a popup shows a list of actions).
click backward button to reflect changes back to template

Example

1. Assignment

«var no = 0»
Before: «no»
«no = no + 1»
After: «no»

2. Branch

«var age=19»
«var count=1»
«if age>=18»
  Wow! An adult! «count» 
«else»
  Hi! A little boy! «count»
«endif»
«count»

3. Forloop

«var lst=[{head:"Modeling", text:"UML"},{head:"Programming", text:"Java"}]»
«for p in lst»
<h1>«p.head»</h1>
«endfor»

4. Mixed

«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>