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# __COPYRIGHT__
#
# Functions and data for timing different idioms for fetching a keyword
# value from a pair of dictionaries for localand global values. This was
# used to select how to most efficiently expand single $KEYWORD strings
# in src/engine/SCons/Subst.py.
def Func1(var, gvars, lvars):
"""lvars try:-except:, gvars try:-except:"""
for i in IterationList:
try:
x = lvars[var]
except KeyError:
try:
x = gvars[var]
except KeyError:
x = ''
def Func2(var, gvars, lvars):
"""lvars has_key(), gvars try:-except:"""
for i in IterationList:
if var in lvars:
x = lvars[var]
else:
try:
x = gvars[var]
except KeyError:
x = ''
def Func3(var, gvars, lvars):
"""lvars has_key(), gvars has_key()"""
for i in IterationList:
if var in lvars:
x = lvars[var]
elif var in gvars:
x = gvars[var]
else:
x = ''
def Func4(var, gvars, lvars):
"""eval()"""
for i in IterationList:
try:
x = eval(var, gvars, lvars)
except NameError:
x = ''
def Func5(var, gvars, lvars):
"""Chained get with default values"""
for i in IterationList:
x = lvars.get(var,gvars.get(var,''))
# Data to pass to the functions on each run. Each entry is a
# three-element tuple:
#
# (
# "Label to print describing this data run",
# ('positional', 'arguments'),
# {'keyword' : 'arguments'},
# ),
Data = [
(
"Neither in gvars or lvars",
('x', {}, {}),
{},
),
(
"Missing from lvars, found in gvars",
('x', {'x':1}, {}),
{},
),
(
"Found in lvars",
('x', {'x':1}, {'x':2}),
{},
),
]
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4:
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