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module demo::lang::Lisra::Syntax

rascal-0.42.2

Usage​

import demo::lang::Lisra::Syntax;

syntax Whitespace​

layout Whitespace      = [\t-\n\r\ ]*;

syntax IntegerLiteral​

lexical IntegerLiteral = [0-9]+ !>> [0-9];

syntax AtomExp​

lexical AtomExp        = (![0-9()\t-\n\r\ ])+ !>>  ![0-9()\t-\n\r\ ];

syntax LispExp​

start syntax LispExp            // TODO: remove constructor names (needed for compiler)
      = int_lit: IntegerLiteral
      | atom_exp: AtomExp
      | par_exp: "(" LispExp* ")"
      ;