CSTML input stream processing

01.formatted.log

conartist6@hq bablr-cli % echo '"eat()"' | node bin/index.js -l @bablr/language-bablr-vm-instruction -p Call -f
<!cstml 'https://github.com/bablr-lang/language-bablr-vm-instruction'>
<>
  <Call>
    callee:
    <*Identifier>
      'eat'
    </>
    arguments:
    <Tuple>
      open:
      <*Punctuator balanced=')'>
        '('
      </>
      values[]:
      null
      close:
      <*Punctuator balancer>
        ')'
      </>
    </>
  </>
</>

02.verbose.log

conartist6@hq bablr-cli % echo '"eat()"' | node bin/index.js -l @bablr/language-bablr-vm-instruction -p Call -v
      resolve($Promise)
      advance(<!cstml 'https://github.com/bablr-lang/language-bablr-vm-instruction'>)
<!cstml 'https://github.com/bablr-lang/language-bablr-vm-instruction'>
      advance(<>)
<>
--> Call
    eat(<*Identifier> 'callee')
      advance(<Call>)
<Call>
      advance(callee)
callee:
      advance(<*Identifier>)
<*Identifier>
--> Identifier
    eat(/\w+/)
      resolve($Promise)
      advance('eat')
'eat'
<-- Identifier
      advance(</Identifier>)
</>
    eat(<Tuple> 'arguments')
      advance(arguments)
arguments:
      advance(<Tuple>)
<Tuple>
--> Tuple
    eat(<*Punctuator '(' balanced=')'> 'open')
      advance(open)
open:
      advance(<*Punctuator balanced=')'>)
      bindAttribute(balanced ')')
<*Punctuator balanced=')'>
--> Punctuator
    eat('(')
      advance('(')
'('
<-- Punctuator
      advance(</Punctuator>)
</>
    eatMatch(<Expression> 'values[]')
      branch()
      advance(values[])
--> Expression
    eat(<Match> null [
        (<Array> '[')
        (<Object> '{')
        (<Tuple> '(')
        (<Boolean> /true|false/)
        (<Null> 'null')
        (<Identifier> /\w/)
      ])
--> Match
    match('[')
    match('{')
    match('(')
    match(/true|false/)
    match('null')
    match(/\w/)
x-- Match
x-- Expression
      reject()
values[]:
null
    eat(<*Punctuator ')' balancer> 'close')
      advance(close)
close:
      advance(<*Punctuator balancer=true>)
      bindAttribute(balancer true)
<*Punctuator balancer>
--> Punctuator
    eat(')')
      advance(')')
')'
<-- Punctuator
      advance(</Punctuator>)
</>
<-- Tuple
      advance(</Tuple>)
</>
<-- Call
      advance(</Call>)
</>
      advance(</>)
</>