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0ac329ec01
* Also enhanced reporting error exit reporting through the scons logger to provide the exception in the compilation report. * More error exits in scons should do this.
194 lines
4.0 KiB
Python
194 lines
4.0 KiB
Python
# Copyright 2025, Kay Hayen, mailto:kay.hayen@gmail.com find license text at end of file
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"""Some random branching to cover most common cases."""
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from __future__ import print_function
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def branchingFunction(a, b, c):
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print("branchingFunction:", a, b, c)
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print("a or b", a or b)
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print("a and b", a and b)
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print("not a", not a)
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print("not b", not b)
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print("Simple branch with both branches")
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if a:
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l = "YES"
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else:
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l = "NO"
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print(a, "->", l)
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print("Simple not branch with both branches")
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if not a:
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l = "YES"
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else:
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l = "NO"
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print(not a, "->", l)
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print("Simple branch with a nested branch in else path:")
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if a:
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m = "yes"
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else:
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if True:
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m = "no"
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print(a, "->", m)
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print("Triple 'and' chain:")
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v = "NO"
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if a and b and c:
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v = "YES"
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print(a, b, c, "->", v)
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print("Triple or chain:")
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k = "NO"
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if a or b or c:
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k = "YES"
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print(a, b, c, "->", k)
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print("Nested 'if not' chain:")
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p = "NO"
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if not a:
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if not b:
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p = "YES"
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print("not a, not b", not a, not b, "->", p)
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print("or condition in braces:")
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q = "NO"
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if a or b:
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q = "YES"
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print("(a or b) ->", q)
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print("Braced if not with two 'or'")
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if not (a or b or c):
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q = "YES"
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else:
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q = "NO"
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print("not (a or b or c)", q)
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print("Braced if not with one 'or'")
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q = "NO"
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if not (b or b):
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q = "YES"
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print("not (b or b)", q)
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print("Expression a or b", a or b)
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print("Expression not(a or b)", not (a or b))
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print("Expression a and (b+5)", a and (b + 5))
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print("Expression (b if b else 2)", (b if b else 2))
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print("Expression (a and (b if b else 2))", (a and (b if b else 2)))
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print("Braced if not chain with 'and' and conditional expression:")
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if not (a and (b if b else 2)):
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print("oki")
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print("Nested if chain with outer else:")
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d = 1
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if a:
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if b or c:
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if d:
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print("inside nest")
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else:
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print("outer else")
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print("Complex conditional expression:")
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v = (3 if a + 1 else 0) or (b or (c * 2 if c else 6) if b - 1 else a and b and c)
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print(v)
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if True:
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print("Predictable branch taken")
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branchingFunction(1, 0, 3)
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x = 3
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def optimizationVictim():
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if x:
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pass
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else:
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pass
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if x:
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pass
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pass
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optimizationVictim()
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def dontOptimizeSideEffects():
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print(
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"Lets see, if conditional expression in known true values are correctly handled:"
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)
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def returnTrue():
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print("function 'returnTrue' was called as expected")
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return True
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def returnFalse():
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print("function 'returnFalse' should not have been called")
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return False
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if (returnTrue() or returnFalse(),):
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print("Taken branch as expected.")
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else:
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print("Bad branch taken.")
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dontOptimizeSideEffects()
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def dontOptimizeTruthCheck():
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class A:
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def __nonzero__(self):
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raise ValueError
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__bool__ = __nonzero__
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a = A()
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if a:
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pass
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try:
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print("Check that branch conditions are not optimized way: ", end="")
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dontOptimizeTruthCheck()
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print("FAIL.")
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except ValueError:
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print("OK.")
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# Python tests originally created or extracted from other peoples work. The
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# parts were too small to be protected.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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