# PEGN-AST-long (v1.0.) pegn.dev/spec/ast-long.pegn
# Copyright 2020 Robert S Muhlestein (rob@rwx.gg)
# Licensed under Apache-2, CC-BY-4.0

Node     <-- Terminal / Parent
Terminal <-- '[' DQ CheckId DQ ',' SP DQ Literal DQ ']'
Parent   <-- '[' DQ CheckId DQ ',' SP ('[]' / Children) ']'
Children  <- '[' LF In Node (',' LF In{2}  Node)* LF In ']'
In        <- SP{2,} # two spaces per depth level
Literal  <-- Escaped / [x20-x21] / [x23-x5B] / [x5D-x10FFFF]
Escaped   <- BKSLASH ('b' / 'f' / 'n' / 'r' / 't' # \u not included
           / DQ / BKSLASH / SLASH)

DQ        <- x22 # "
SP        <- x20 # " "
LF        <- xA  # "\n" (line feed)
BKSLASH   <- x5C # \
SLASH     <- x2F # /