2017-03-07 | Paul Boddie | file changeset files shortlog | Switched to using normal, named function parameters instead of arrays. This requires a special function to convert any array-based arguments to the positioned arguments. However, parameters no longer need to be dereferenced when used in functions. Specialised macros are required to invoke functions with different numbers of parameters. Fortunately, the macros required can be deduced from the functions defined in the program. | normal-function-parameters |
paul@2 | 1 | def f(): |
paul@2 | 2 | l = [1, 2, 3] |
paul@2 | 3 | x = l |
paul@2 | 4 | a, b, c = l |
paul@2 | 5 | d, e, f = [1, 2, 3] |
paul@243 | 6 | print a, b, c # 1, 2, 3 |
paul@243 | 7 | print d, e, f # 1, 2, 3 |
paul@243 | 8 | print x # [1, 2, 3] |
paul@2 | 9 | |
paul@2 | 10 | def g(x): |
paul@2 | 11 | l = [1, 2, 3] |
paul@2 | 12 | m = [4, l, 6] |
paul@2 | 13 | if x: |
paul@2 | 14 | n = l |
paul@2 | 15 | else: |
paul@2 | 16 | n = m |
paul@173 | 17 | print n |
paul@2 | 18 | |
paul@560 | 19 | def h(): |
paul@560 | 20 | return 7, 8, 9 |
paul@560 | 21 | |
paul@561 | 22 | def i(): |
paul@561 | 23 | a, b, c = h() |
paul@561 | 24 | print a, b, c |
paul@561 | 25 | |
paul@561 | 26 | # Test assignment operations within functions. |
paul@561 | 27 | |
paul@197 | 28 | f() |
paul@243 | 29 | g(0) # [4, [1, 2, 3], 6] |
paul@243 | 30 | g(1) # [1, 2, 3] |
paul@197 | 31 | |
paul@561 | 32 | # Test aliasing, assignment of list elements and direct assignment of elements. |
paul@561 | 33 | |
paul@2 | 34 | l = [1, 2, 3] |
paul@2 | 35 | x = l |
paul@2 | 36 | a, b, c = l |
paul@2 | 37 | d, e, f = [1, 2, 3] |
paul@560 | 38 | |
paul@560 | 39 | print a, b, c # 1 2 3 |
paul@560 | 40 | print d, e, f # 1 2 3 |
paul@243 | 41 | print x # [1, 2, 3] |
paul@560 | 42 | |
paul@561 | 43 | # Test embedding of sequences in sequences. |
paul@561 | 44 | |
paul@2 | 45 | m = [4, l, 6] |
paul@561 | 46 | |
paul@561 | 47 | # Test sequence truth value interpretation. |
paul@561 | 48 | |
paul@2 | 49 | if x: |
paul@2 | 50 | n = l |
paul@2 | 51 | else: |
paul@2 | 52 | n = m |
paul@560 | 53 | |
paul@243 | 54 | print n # [1, 2, 3] |
paul@560 | 55 | |
paul@561 | 56 | # Test temporary variable usage at module level. |
paul@561 | 57 | |
paul@560 | 58 | a, b, c = h() |
paul@560 | 59 | print a, b, c # 7 8 9 |
paul@561 | 60 | |
paul@561 | 61 | # Test temporary variable usage in functions. |
paul@561 | 62 | |
paul@561 | 63 | i() # 7 8 9 |
paul@561 | 64 | |
paul@561 | 65 | # Test temporary variable usage in classes. |
paul@561 | 66 | |
paul@561 | 67 | class C: |
paul@561 | 68 | a, b, c = h() |
paul@561 | 69 | print a, b, c # 7 8 9 |