• DoctypeDeclaration{http://etl.sf.net/etl/doctype/0.2.1}:
  • systemId: "calculator-vars-0_2_1.g.etl"
• PrintStatement{http://etl.sf.net/samples/calculator}:
  • values:
    • StringLiteral{http://etl.sf.net/samples/calculator}:
      • value: "PI ** E: "
    • Power{http://etl.sf.net/samples/calculator/arith}:
      • first:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • quoted: Q'PI'
      • second:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • literal: E
• PrintStatement{http://etl.sf.net/samples/calculator}:
  • values:
    • StringLiteral{http://etl.sf.net/samples/calculator}:
      • value: "E ** PI: "
    • Power{http://etl.sf.net/samples/calculator/arith}:
      • first:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • literal: E
      • second:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • literal: PI
• VarStatement{http://etl.sf.net/samples/calculator/vars}:
  • documentation:
    • DocumentationLine{http://etl.sf.net/samples/calculator/meta}:
      • text: /// The dozen constant defined in a complex way
  • type: let
  • name:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • literal: dozen
  • value:
    • Multiply{http://etl.sf.net/samples/calculator/arith}:
      • first:
        • Sequence{http://etl.sf.net/samples/calculator}:
          • statements:
            • VarStatement{http://etl.sf.net/samples/calculator/vars}:
              • type: let
              • name:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: a
              • value:
                • Sequence{http://etl.sf.net/samples/calculator}:
                  • statements:
                    • VarStatement{http://etl.sf.net/samples/calculator/vars}:
                      • type: let
                      • name:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: one
                      • value:
                        • NumberLiteral{http://etl.sf.net/samples/calculator}:
                          • value: 1
                    • ExpressionStatement{http://etl.sf.net/samples/calculator}:
                      • value:
                        • Plus{http://etl.sf.net/samples/calculator/arith}:
                          • first:
                            • Name{http://etl.sf.net/samples/calculator/vars}:
                              • literal: one
                          • second:
                            • Name{http://etl.sf.net/samples/calculator/vars}:
                              • literal: one
            • ExpressionStatement{http://etl.sf.net/samples/calculator}:
              • value:
                • Multiply{http://etl.sf.net/samples/calculator/arith}:
                  • first:
                    • Name{http://etl.sf.net/samples/calculator/vars}:
                      • literal: a
                  • second:
                    • Name{http://etl.sf.net/samples/calculator/vars}:
                      • literal: a
      • second:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 3
• Help{http://etl.sf.net/samples/calculator/vars}:
  • variable:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • literal: dozen
• Help{http://etl.sf.net/samples/calculator/vars}:
  • variable:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • literal: PI
• VarStatement{http://etl.sf.net/samples/calculator/vars}:
  • type: let
  • name:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • literal: a
• ExpressionStatement{http://etl.sf.net/samples/calculator}:
  • value:
    • Assignment{http://etl.sf.net/samples/calculator/vars}:
      • first:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • literal: a
      • second:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 4
• Help{http://etl.sf.net/samples/calculator/vars}:
  • variable:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • literal: a
• VarStatement{http://etl.sf.net/samples/calculator/vars}:
  • type: let
  • name:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • literal: let
• ExpressionStatement{http://etl.sf.net/samples/calculator}:
  • value:
    • Assignment{http://etl.sf.net/samples/calculator/vars}:
      • first:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • quoted: q'let'
      • second:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 2
• VarStatement{http://etl.sf.net/samples/calculator/vars}:
  • type: let
  • name:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • quoted: Q'print'
• ExpressionStatement{http://etl.sf.net/samples/calculator}:
  • value:
    • Assignment{http://etl.sf.net/samples/calculator/vars}:
      • first:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • quoted: Q'print'
      • second:
        • Plus{http://etl.sf.net/samples/calculator/arith}:
          • first:
            • Plus{http://etl.sf.net/samples/calculator/arith}:
              • first:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: let
              • second:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • quoted: q'let'
          • second:
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • quoted: Q'\x6c\u0065\U000074;'
• PrintStatement{http://etl.sf.net/samples/calculator}:
  • values:
    • StringLiteral{http://etl.sf.net/samples/calculator}:
      • value: "used keyword vars: "
    • Multiply{http://etl.sf.net/samples/calculator/arith}:
      • first:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • literal: let
      • second:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • literal: print
• Help{http://etl.sf.net/samples/calculator/vars}:
  • variable:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • literal: let
• Help{http://etl.sf.net/samples/calculator/vars}:
  • variable:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • quoted: q'print'
• Help{http://etl.sf.net/samples/calculator/vars}:
  • variable:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • quoted: q'$runner'

     1: doctype "calculator-vars-0_2_1.g.etl";
     2: 
     3: print "PI ** E: ", Q'PI' ** E;
     4: print "E ** PI: ", E ** PI;
     5: /// The dozen constant defined in a complex way
     6: let dozen = {let a = {let one = 1; one + one;}; a * a;} * 3;
     7: help dozen;
     8: help PI;
     9: let a;
    10: a = 4;
    11: help a;
    12: // Using keyword as a name. Quoting is only required
    13: // where it could happen as a keyword, but possible everywhere.
    14: let let;
    15: q'let' = 2;
    16: let Q'print';
    17: // quoting of left hand side is required, but in expression
    18: // is not since "let" is not a keyword in the expression context.
    19: // the last in the sum is also "let" but with 
    20: // all unicode escapes used. 
    21: Q'print' = let + q'let' + Q'\x6c\u0065\U000074;';
    22: // in the sample below quoting is not required
    23: // since "print" and "let" are not keywords in this context
    24: print "used keyword vars: ", let * print;  
    25: help let;
    26: help q'print';
    27: // the $runner is the system variable defined by the runner
    28: help q'$runner';
    29: