ESD parser grammar

ESD.peg

splitter "parse words divided by spaces"
  = _? x:(y:word _? { return y } )* { return x }
  
word
  = number
  / w:[^ \t\n\r]+ { return w.join('') }

_ "space"
  = s:[ \t\n\r]+  { return s.join('') }

number
  = hex / bin
  / e:exponent { return parseFloat(e) }
  / f:float    { return parseFloat(f) }
  / n:integer  { return parseInt(n)   }

hex      = "0x" h:[0-9a-fA-F]+ { return parseInt(h.join(''),0x10) }
bin      = "0b" b:[01]+        { return parseInt(b.join(''),0x02) }

integer  = s:[\+\-]? n:[0-9]+ { n = n.join(''); if (s) n=s+n; return n }

float    = n:integer '.' f:[0-9]* { return n+'.'+f.join('') }
exponent = a:float   [eE] b:integer { return a+'e'+b }
         / a:integer [eE] b:integer { return a+'e'+b }