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annotate roundup/mlink_expr.py @ 7800:2d4684e4702d

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fix: enhancement to history command output and % template fix. Rather than using the key field, use the label field for descriptions. Call cls.labelprop(default_to_id=True) so it returns id rather than the first sorted property name. If labelprop() returns 'id' or 'title', we return nothing. 'id' means there is no label set and no properties named 'name' or 'title'. So have the caller do whatever it wants (prepend classname for example) when there is no human readable name. This prevents %(name)s%(key)s from producing: 23(23). Also don't accept the 'title' property. Titles can be too long. Arguably we could: '%(name)20s' to limit the title length. However without ellipses or something truncating the title might be confusing. So again pretend there is no human readable name.
author John Rouillard <rouilj@ieee.org>
date Tue, 12 Mar 2024 11:52:17 -0400
parents 87af08c75695
children 741ea8a86012
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1 #
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2 # Copyright: 2010 Intevation GmbH.
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3 # 2021 Ralf Schlatterbeck, rsc@runtux.com.
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4 #
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5
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6 # This module is Free Software under the Roundup licensing,
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7 # see the COPYING.txt file coming with Roundup.
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8 #
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9
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10 class Binary:
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11
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12 def __init__(self, x, y):
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13 self.x = x
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14 self.y = y
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15
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16 def visit(self, visitor):
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17 self.x.visit(visitor)
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18 self.y.visit(visitor)
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21 class Unary:
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22
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23 def __init__(self, x):
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24 self.x = x
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25
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26 def generate(self, atom):
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27 return atom(self)
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28
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29 def visit(self, visitor):
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30 self.x.visit(visitor)
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33 class Equals(Unary):
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34
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35 def evaluate(self, v):
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36 return self.x in v
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37
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38 def visit(self, visitor):
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39 visitor(self)
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42 class Empty(Unary):
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43
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44 def evaluate(self, v):
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45 return not v
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46
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47 def visit(self, visitor):
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48 visitor(self)
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51 class Not(Unary):
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52
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53 def evaluate(self, v):
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54 return not self.x.evaluate(v)
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55
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56 def generate(self, atom):
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57 return "NOT(%s)" % self.x.generate(atom)
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60 class Or(Binary):
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61
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62 def evaluate(self, v):
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63 return self.x.evaluate(v) or self.y.evaluate(v)
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64
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65 def generate(self, atom):
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66 return "(%s)OR(%s)" % (
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67 self.x.generate(atom),
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68 self.y.generate(atom))
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71 class And(Binary):
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72
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73 def evaluate(self, v):
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74 return self.x.evaluate(v) and self.y.evaluate(v)
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75
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76 def generate(self, atom):
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77 return "(%s)AND(%s)" % (
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78 self.x.generate(atom),
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79 self.y.generate(atom))
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82 def compile_expression(opcodes):
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83
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84 stack = []
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85 push, pop = stack.append, stack.pop
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86 for opcode in opcodes:
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87 if opcode == -1: push(Empty(opcode)) # noqa: E271,E701
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88 elif opcode == -2: push(Not(pop())) # noqa: E701
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89 elif opcode == -3: push(And(pop(), pop())) # noqa: E701
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90 elif opcode == -4: push(Or(pop(), pop())) # noqa: E701
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91 else: push(Equals(opcode)) # noqa: E701
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92
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93 return pop()
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94
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96 class Expression:
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97
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98 def __init__(self, v, is_link=False):
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99 try:
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100 opcodes = [int(x) for x in v]
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101 if min(opcodes) >= -1:
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102 raise ValueError()
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103
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104 compiled = compile_expression(opcodes)
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105 if is_link:
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106 self.evaluate = lambda x: compiled.evaluate(
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107 x and [int(x)] or [])
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108 else:
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109 self.evaluate = lambda x: compiled.evaluate([int(y) for y in x])
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110 except (ValueError, TypeError):
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111 if is_link:
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112 v = [None if x == '-1' else x for x in v]
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113 self.evaluate = lambda x: x in v
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114 elif '-1' in v:
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115 v = [x for x in v if int(x) > 0]
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116 self.evaluate = lambda x: bool(set(x) & set(v)) or not x
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117 else:
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118 self.evaluate = lambda x: bool(set(x) & set(v))
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119 except BaseException:
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120 raise
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