• DoctypeDeclaration{http://etl.sf.net/etl/doctype/0.2.1}:
  • systemId: "calculator-lambda-0_2_1.g.etl"
• VarStatement{http://etl.sf.net/samples/calculator/vars}:
  • documentation:
    • DocumentationLine{http://etl.sf.net/samples/calculator/meta}:
      • text: /// The special marker value used to stop computation in sum function
  • type: let
  • name:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • literal: STOP
  • value:
    • Lambda{http://etl.sf.net/samples/calculator/lambda}:
      • parameters:
        • Parameter{http://etl.sf.net/samples/calculator/lambda}:
          • name:
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • literal: x
      • value:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • literal: x
• VarStatement{http://etl.sf.net/samples/calculator/vars}:
  • documentation:
    • DocumentationLine{http://etl.sf.net/samples/calculator/meta}:
      • text: /// Sum arguments up to stop marker like {@code sum(0,1,2,3,STOP)}
    • DocumentationLine{http://etl.sf.net/samples/calculator/meta}:
      • text: ///
    • DocumentationLine{http://etl.sf.net/samples/calculator/meta}:
      • text: /// @return the function that accumulates results.
  • type: let
  • name:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • literal: sum
  • value:
    • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
      • statements:
        • BlockParameters{http://etl.sf.net/samples/calculator/lambda}:
        • VarStatement{http://etl.sf.net/samples/calculator/vars}:
          • type: var
          • name:
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • literal: sum
          • value:
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 0
        • LetRec{http://etl.sf.net/samples/calculator/vars}:
          • definitions:
            • LetRecPart{http://etl.sf.net/samples/calculator/vars}:
              • name:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: acc
              • value:
                • Lambda{http://etl.sf.net/samples/calculator/lambda}:
                  • parameters:
                    • Parameter{http://etl.sf.net/samples/calculator/lambda}:
                      • name:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: x
                  • value:
                    • IfExpression{http://etl.sf.net/samples/calculator/logic}:
                      • condition:
                        • Equal{http://etl.sf.net/samples/calculator/logic}:
                          • first:
                            • Name{http://etl.sf.net/samples/calculator/vars}:
                              • literal: x
                          • second:
                            • Name{http://etl.sf.net/samples/calculator/vars}:
                              • literal: STOP
                      • thenPart:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: sum
                      • elsePart:
                        • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
                          • statements:
                            • 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: sum
                                  • second:
                                    • Plus{http://etl.sf.net/samples/calculator/arith}:
                                      • first:
                                        • Name{http://etl.sf.net/samples/calculator/vars}:
                                          • literal: sum
                                      • second:
                                        • Name{http://etl.sf.net/samples/calculator/vars}:
                                          • literal: x
                            • ExpressionStatement{http://etl.sf.net/samples/calculator}:
                              • value:
                                • Name{http://etl.sf.net/samples/calculator/vars}:
                                  • literal: acc
• VarStatement{http://etl.sf.net/samples/calculator/vars}:
  • documentation:
    • DocumentationLine{http://etl.sf.net/samples/calculator/meta}:
      • text: /// Greatest common divisor
    • DocumentationLine{http://etl.sf.net/samples/calculator/meta}:
      • text: ///
    • DocumentationLine{http://etl.sf.net/samples/calculator/meta}:
      • text: /// @param a the positive integer value
    • DocumentationLine{http://etl.sf.net/samples/calculator/meta}:
      • text: /// @param b the positive integer value
    • DocumentationLine{http://etl.sf.net/samples/calculator/meta}:
      • text: /// @return the greatest common divisor
  • type: let
  • name:
    • Name{http://etl.sf.net/samples/calculator/vars}:
      • literal: gcd
  • value:
    • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
      • statements:
        • BlockParameters{http://etl.sf.net/samples/calculator/lambda}:
          • parameters:
            • Parameter{http://etl.sf.net/samples/calculator/lambda}:
              • type: var
              • name:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • quoted: q'a'
            • Parameter{http://etl.sf.net/samples/calculator/lambda}:
              • type: var
              • name:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: b
        • ExpressionStatement{http://etl.sf.net/samples/calculator}:
          • value:
            • Apply{http://etl.sf.net/samples/calculator/lambda}:
              • function:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: assertInt
              • arguments:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: a
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: b
        • AssertStatement{http://etl.sf.net/samples/calculator/logic}:
          • condition:
            • ConditionalAnd{http://etl.sf.net/samples/calculator/logic}:
              • first:
                • MoreThen{http://etl.sf.net/samples/calculator/logic}:
                  • first:
                    • Name{http://etl.sf.net/samples/calculator/vars}:
                      • literal: a
                  • second:
                    • NumberLiteral{http://etl.sf.net/samples/calculator}:
                      • value: 0
              • second:
                • MoreThen{http://etl.sf.net/samples/calculator/logic}:
                  • first:
                    • Name{http://etl.sf.net/samples/calculator/vars}:
                      • literal: b
                  • second:
                    • NumberLiteral{http://etl.sf.net/samples/calculator}:
                      • value: 0
        • ExpressionStatement{http://etl.sf.net/samples/calculator}:
          • value:
            • IfExpression{http://etl.sf.net/samples/calculator/logic}:
              • condition:
                • LessThen{http://etl.sf.net/samples/calculator/logic}:
                  • first:
                    • Name{http://etl.sf.net/samples/calculator/vars}:
                      • literal: a
                  • second:
                    • Name{http://etl.sf.net/samples/calculator/vars}:
                      • literal: b
              • thenPart:
                • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
                  • statements:
                    • VarStatement{http://etl.sf.net/samples/calculator/vars}:
                      • type: let
                      • name:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: t
                      • value:
                        • 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:
                            • Name{http://etl.sf.net/samples/calculator/vars}:
                              • quoted: Q'b'
                    • 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: b
                          • second:
                            • Name{http://etl.sf.net/samples/calculator/vars}:
                              • literal: t
        • WhileStatement{http://etl.sf.net/samples/calculator/logic}:
          • condition:
            • NotEqual{http://etl.sf.net/samples/calculator/logic}:
              • first:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: b
              • second:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 0
          • body:
            • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
              • statements:
                • VarStatement{http://etl.sf.net/samples/calculator/vars}:
                  • type: let
                  • name:
                    • Name{http://etl.sf.net/samples/calculator/vars}:
                      • literal: r
                  • value:
                    • Remainder{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: b
                • 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:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: b
                • 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: b
                      • second:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: r
        • ExpressionStatement{http://etl.sf.net/samples/calculator}:
          • value:
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • literal: a
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Apply{http://etl.sf.net/samples/calculator/lambda}:
      • arguments:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 11
      • function:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • literal: !*=
      • arguments:
        • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
          • statements:
            • BlockParameters{http://etl.sf.net/samples/calculator/lambda}:
            • ExpressionStatement{http://etl.sf.net/samples/calculator}:
              • value:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 12
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Apply{http://etl.sf.net/samples/calculator/lambda}:
      • arguments:
        • Identity{http://etl.sf.net/samples/calculator}:
          • value:
            • Lambda{http://etl.sf.net/samples/calculator/lambda}:
              • value:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 12
      • function:
        • Name{http://etl.sf.net/samples/calculator/vars}:
          • literal: =*=
      • arguments:
        • Identity{http://etl.sf.net/samples/calculator}:
          • value:
            • Apply{http://etl.sf.net/samples/calculator/lambda}:
              • function:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: &
              • arguments:
                • Lambda{http://etl.sf.net/samples/calculator/lambda}:
                  • value:
                    • NumberLiteral{http://etl.sf.net/samples/calculator}:
                      • value: 12
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 12
      • second:
        • Dereference{http://etl.sf.net/samples/calculator/lambda}:
          • value:
            • Identity{http://etl.sf.net/samples/calculator}:
              • value:
                • Lambda{http://etl.sf.net/samples/calculator/lambda}:
                  • value:
                    • Lambda{http://etl.sf.net/samples/calculator/lambda}:
                      • value:
                        • Apply{http://etl.sf.net/samples/calculator/lambda}:
                          • function:
                            • Name{http://etl.sf.net/samples/calculator/vars}:
                              • literal: &
                          • arguments:
                            • Lambda{http://etl.sf.net/samples/calculator/lambda}:
                              • value:
                                • Apply{http://etl.sf.net/samples/calculator/lambda}:
                                  • function:
                                    • Apply{http://etl.sf.net/samples/calculator/lambda}:
                                      • function:
                                        • Name{http://etl.sf.net/samples/calculator/vars}:
                                          • literal: max
                                      • arguments:
                                        • NumberLiteral{http://etl.sf.net/samples/calculator}:
                                          • value: 10
                                  • arguments:
                                    • NumberLiteral{http://etl.sf.net/samples/calculator}:
                                      • value: 12
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 12
      • second:
        • Dereference{http://etl.sf.net/samples/calculator/lambda}:
          • value:
            • Identity{http://etl.sf.net/samples/calculator}:
              • value:
                • Lambda{http://etl.sf.net/samples/calculator/lambda}:
                  • value:
                    • Lambda{http://etl.sf.net/samples/calculator/lambda}:
                      • value:
                        • Apply{http://etl.sf.net/samples/calculator/lambda}:
                          • function:
                            • Name{http://etl.sf.net/samples/calculator/vars}:
                              • quoted: q'&'
                          • arguments:
                            • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
                              • statements:
                                • BlockParameters{http://etl.sf.net/samples/calculator/lambda}:
                                • ExpressionStatement{http://etl.sf.net/samples/calculator}:
                                  • value:
                                    • Plus{http://etl.sf.net/samples/calculator/arith}:
                                      • first:
                                        • Plus{http://etl.sf.net/samples/calculator/arith}:
                                          • first:
                                            • NumberLiteral{http://etl.sf.net/samples/calculator}:
                                              • value: 1
                                          • second:
                                            • NumberLiteral{http://etl.sf.net/samples/calculator}:
                                              • value: 10
                                      • second:
                                        • NumberLiteral{http://etl.sf.net/samples/calculator}:
                                          • value: 1
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 12
      • second:
        • Apply{http://etl.sf.net/samples/calculator/lambda}:
          • function:
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • literal: abs
          • arguments:
            • Minus{http://etl.sf.net/samples/calculator/arith}:
              • first:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 1
              • second:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 13
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 12
      • second:
        • Apply{http://etl.sf.net/samples/calculator/lambda}:
          • function:
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • literal: sum
          • arguments:
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 0
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 1
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 2
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 3
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 3
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 2
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 1
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 0
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • literal: STOP
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 12
      • second:
        • Divide{http://etl.sf.net/samples/calculator/arith}:
          • first:
            • Apply{http://etl.sf.net/samples/calculator/lambda}:
              • function:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: factorial
              • arguments:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 4
          • second:
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 2
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 12
      • second:
        • Apply{http://etl.sf.net/samples/calculator/lambda}:
          • arguments:
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 420
          • function:
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • literal: gcd
          • arguments:
            • Plus{http://etl.sf.net/samples/calculator/arith}:
              • first:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 140
              • second:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 4
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 12
      • second:
        • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
          • statements:
            • VarStatement{http://etl.sf.net/samples/calculator/vars}:
              • type: var
              • name:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: s
              • value:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 0
            • ExpressionStatement{http://etl.sf.net/samples/calculator}:
              • value:
                • Apply{http://etl.sf.net/samples/calculator/lambda}:
                  • function:
                    • Apply{http://etl.sf.net/samples/calculator/lambda}:
                      • arguments:
                        • NumberLiteral{http://etl.sf.net/samples/calculator}:
                          • value: 0
                      • function:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: upto
                      • arguments:
                        • NumberLiteral{http://etl.sf.net/samples/calculator}:
                          • value: 4
                  • arguments:
                    • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
                      • statements:
                        • BlockParameters{http://etl.sf.net/samples/calculator/lambda}:
                          • parameters:
                            • Parameter{http://etl.sf.net/samples/calculator/lambda}:
                              • name:
                                • Name{http://etl.sf.net/samples/calculator/vars}:
                                  • literal: i
                        • 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: s
                              • second:
                                • Plus{http://etl.sf.net/samples/calculator/arith}:
                                  • first:
                                    • Name{http://etl.sf.net/samples/calculator/vars}:
                                      • literal: s
                                  • second:
                                    • Name{http://etl.sf.net/samples/calculator/vars}:
                                      • literal: i
            • 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: s
                  • second:
                    • NumberLiteral{http://etl.sf.net/samples/calculator}:
                      • value: 2
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 12
      • second:
        • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
          • statements:
            • VarStatement{http://etl.sf.net/samples/calculator/vars}:
              • type: var
              • name:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: s
              • value:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 0
            • VarStatement{http://etl.sf.net/samples/calculator/vars}:
              • type: var
              • name:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: n
              • value:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 0
            • ExpressionStatement{http://etl.sf.net/samples/calculator}:
              • value:
                • Apply{http://etl.sf.net/samples/calculator/lambda}:
                  • function:
                    • Apply{http://etl.sf.net/samples/calculator/lambda}:
                      • function:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: for
                      • arguments:
                        • NumberLiteral{http://etl.sf.net/samples/calculator}:
                          • value: 14
                        • NumberLiteral{http://etl.sf.net/samples/calculator}:
                          • value: 9.9
                        • UnaryMinus{http://etl.sf.net/samples/calculator/arith}:
                          • value:
                            • NumberLiteral{http://etl.sf.net/samples/calculator}:
                              • value: 0.25
                  • arguments:
                    • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
                      • statements:
                        • BlockParameters{http://etl.sf.net/samples/calculator/lambda}:
                          • parameters:
                            • Parameter{http://etl.sf.net/samples/calculator/lambda}:
                              • name:
                                • Name{http://etl.sf.net/samples/calculator/vars}:
                                  • literal: i
                        • 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: s
                              • second:
                                • Plus{http://etl.sf.net/samples/calculator/arith}:
                                  • first:
                                    • Name{http://etl.sf.net/samples/calculator/vars}:
                                      • literal: s
                                  • second:
                                    • Name{http://etl.sf.net/samples/calculator/vars}:
                                      • literal: i
                        • 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: n
                              • second:
                                • Plus{http://etl.sf.net/samples/calculator/arith}:
                                  • first:
                                    • Name{http://etl.sf.net/samples/calculator/vars}:
                                      • literal: n
                                  • second:
                                    • NumberLiteral{http://etl.sf.net/samples/calculator}:
                                      • value: 1
            • ExpressionStatement{http://etl.sf.net/samples/calculator}:
              • value:
                • Divide{http://etl.sf.net/samples/calculator/arith}:
                  • first:
                    • Name{http://etl.sf.net/samples/calculator/vars}:
                      • literal: s
                  • second:
                    • Name{http://etl.sf.net/samples/calculator/vars}:
                      • literal: n
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 1
      • second:
        • Apply{http://etl.sf.net/samples/calculator/lambda}:
          • function:
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • literal: sign
          • arguments:
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 12
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • UnaryMinus{http://etl.sf.net/samples/calculator/arith}:
          • value:
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 1
      • second:
        • Apply{http://etl.sf.net/samples/calculator/lambda}:
          • function:
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • literal: sign
          • arguments:
            • UnaryMinus{http://etl.sf.net/samples/calculator/arith}:
              • value:
                • Name{http://etl.sf.net/samples/calculator/vars}:
                  • literal: MIN_NUMBER
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Equal{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 0
      • second:
        • Apply{http://etl.sf.net/samples/calculator/lambda}:
          • function:
            • Name{http://etl.sf.net/samples/calculator/vars}:
              • literal: sign
          • arguments:
            • Minus{http://etl.sf.net/samples/calculator/arith}:
              • first:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 12
              • second:
                • NumberLiteral{http://etl.sf.net/samples/calculator}:
                  • value: 12
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • Matches{http://etl.sf.net/samples/calculator/logic}:
      • first:
        • NumberLiteral{http://etl.sf.net/samples/calculator}:
          • value: 12
      • second:
        • LambdaSequence{http://etl.sf.net/samples/calculator/lambda}:
          • statements:
            • BlockParameters{http://etl.sf.net/samples/calculator/lambda}:
              • parameters:
                • Parameter{http://etl.sf.net/samples/calculator/lambda}:
                  • name:
                    • Name{http://etl.sf.net/samples/calculator/vars}:
                      • literal: n
            • ExpressionStatement{http://etl.sf.net/samples/calculator}:
              • value:
                • Equal{http://etl.sf.net/samples/calculator/logic}:
                  • first:
                    • Apply{http://etl.sf.net/samples/calculator/lambda}:
                      • function:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: sign
                      • arguments:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: n
                  • second:
                    • NumberLiteral{http://etl.sf.net/samples/calculator}:
                      • value: 1
• AssertStatement{http://etl.sf.net/samples/calculator/logic}:
  • condition:
    • LogicalNot{http://etl.sf.net/samples/calculator/logic}:
      • value:
        • Matches{http://etl.sf.net/samples/calculator/logic}:
          • first:
            • NumberLiteral{http://etl.sf.net/samples/calculator}:
              • value: 12
          • second:
            • Identity{http://etl.sf.net/samples/calculator}:
              • value:
                • Lambda{http://etl.sf.net/samples/calculator/lambda}:
                  • parameters:
                    • Parameter{http://etl.sf.net/samples/calculator/lambda}:
                      • name:
                        • Name{http://etl.sf.net/samples/calculator/vars}:
                          • literal: n
                  • value:
                    • Equal{http://etl.sf.net/samples/calculator/logic}:
                      • first:
                        • Apply{http://etl.sf.net/samples/calculator/lambda}:
                          • function:
                            • Name{http://etl.sf.net/samples/calculator/vars}:
                              • literal: sign
                          • arguments:
                            • Name{http://etl.sf.net/samples/calculator/vars}:
                              • literal: n
                      • second:
                        • UnaryMinus{http://etl.sf.net/samples/calculator/arith}:
                          • value:
                            • NumberLiteral{http://etl.sf.net/samples/calculator}:
                              • value: 1

     1: doctype "calculator-lambda-0_2_1.g.etl";
     2: 
     3: /// The special marker value used to stop computation in sum function
     4: let STOP = \x => x;
     5: /// Sum arguments up to stop marker like {@code sum(0,1,2,3,STOP)}
     6: ///
     7: /// @return the function that accumulates results.
     8: let sum = {?;
     9:     var sum = 0;
    10:     to acc(x) => if( x == STOP) sum else {sum = sum + x; acc;};
    11: };
    12: /// Greatest common divisor
    13: ///
    14: /// @param a the positive integer value
    15: /// @param b the positive integer value
    16: /// @return the greatest common divisor
    17: let gcd = {? var q'a', var b;
    18:     assertInt(a,b);
    19:     assert a > 0 && b > 0;
    20:     if(a < b) {
    21:         let t = a;
    22:         a = Q'b';
    23:         b = t;
    24:     };
    25:     while(b != 0) {
    26:         let r = a % b;
    27:         a = b;
    28:         b = r;
    29:     };
    30:     a;
    31: };
    32: 
    33: 
    34: assert 11 !*= {?; 12;};
    35: assert (\> 12) =*= (& 12);
    36: assert 12 == * (\()=> \> & max(10)(12));
    37: assert 12 == * (\()=> \> #q'&' {?;1+10+1;});
    38: assert 12 == #abs 1-13;
    39: assert 12 == sum(0,1,2,3,3,2,1,0,STOP);
    40: assert 12 == factorial(4) / 2;
    41: assert 12 == 420 #gcd 140 + 4;
    42: assert 12 == {
    43:     var s = 0;
    44:     0 #upto 4 {?i;
    45:         s = s + i;
    46:     };
    47:     s * 2;
    48: }; 
    49: assert 12 == {
    50:     var s = 0;
    51:     var n = 0;
    52:     for(14, 9.9, -0.25) {?i;
    53:         s = s + i;
    54:         n = n + 1;
    55:     };
    56:     s / n;
    57: };
    58: assert  1 == #sign 12;
    59: assert -1 == #sign -MIN_NUMBER;
    60: assert  0 == sign(12-12);
    61: assert   12 ==~ {?n; sign(n) == 1;};
    62: assert ! 12 ==~ (\n => sign(n) == -1);