test_grammar.py

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    finally:
        msg = "continue + try/finally ok"
print msg


# This test warrants an explanation. It is a test specifically for SF bugs
# #463359 and #462937. The bug is that a 'break' statement executed or
# exception raised inside a try/except inside a loop, *after* a continue
# statement has been executed in that loop, will cause the wrong number of
# arguments to be popped off the stack and the instruction pointer reset to
# a very small number (usually 0.) Because of this, the following test
# *must* written as a function, and the tracking vars *must* be function
# arguments with default values. Otherwise, the test will loop and loop.

print "testing continue and break in try/except in loop"
def test_break_continue_loop(extra_burning_oil = 1, count=0):
    big_hippo = 2
    while big_hippo:
        count += 1
        try:
            if extra_burning_oil and big_hippo == 1:
                extra_burning_oil -= 1
                break
            big_hippo -= 1
            continue
        except:
            raise
    if count > 2 or big_hippo <> 1:
        print "continue then break in try/except in loop broken!"
test_break_continue_loop()

print 'return_stmt' # 'return' [testlist]
def g1(): return
def g2(): return 1
g1()
x = g2()

print 'raise_stmt' # 'raise' test [',' test]
try: raise RuntimeError, 'just testing'
except RuntimeError: pass
try: raise KeyboardInterrupt
except KeyboardInterrupt: pass

print 'import_stmt' # 'import' NAME (',' NAME)* | 'from' NAME 'import' ('*' | NAME (',' NAME)*)
import sys
import time, sys
from time import time
from sys import *
from sys import path, argv

print 'global_stmt' # 'global' NAME (',' NAME)*
def f():
    global a
    global a, b
    global one, two, three, four, five, six, seven, eight, nine, ten

print 'exec_stmt' # 'exec' expr ['in' expr [',' expr]]
def f():
    z = None
    del z
    exec 'z=1+1\n'
    if z != 2: raise TestFailed, 'exec \'z=1+1\'\\n'
    del z
    exec 'z=1+1'
    if z != 2: raise TestFailed, 'exec \'z=1+1\''
    z = None
    del z
    import types
    if hasattr(types, "UnicodeType"):
        exec r"""if 1:
    exec u'z=1+1\n'
    if z != 2: raise TestFailed, 'exec u\'z=1+1\'\\n'
    del z
    exec u'z=1+1'
    if z != 2: raise TestFailed, 'exec u\'z=1+1\''
"""
f()
g = {}
exec 'z = 1' in g
if g.has_key('__builtins__'): del g['__builtins__']
if g != {'z': 1}: raise TestFailed, 'exec \'z = 1\' in g'
g = {}
l = {}

import warnings
warnings.filterwarnings("ignore", "global statement", module="<string>")
exec 'global a; a = 1; b = 2' in g, l
if g.has_key('__builtins__'): del g['__builtins__']
if l.has_key('__builtins__'): del l['__builtins__']
if (g, l) != ({'a':1}, {'b':2}): raise TestFailed, 'exec ... in g (%s), l (%s)' %(g,l)


print "assert_stmt" # assert_stmt: 'assert' test [',' test]
assert 1
assert 1, 1
assert lambda x:x
assert 1, lambda x:x+1

### compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | funcdef | classdef
# Tested below

print 'if_stmt' # 'if' test ':' suite ('elif' test ':' suite)* ['else' ':' suite]
if 1: pass
if 1: pass
else: pass
if 0: pass
elif 0: pass
if 0: pass
elif 0: pass
elif 0: pass
elif 0: pass
else: pass

print 'while_stmt' # 'while' test ':' suite ['else' ':' suite]
while 0: pass
while 0: pass
else: pass

print 'for_stmt' # 'for' exprlist 'in' exprlist ':' suite ['else' ':' suite]
for i in 1, 2, 3: pass
for i, j, k in (): pass
else: pass
class Squares:
    def __init__(self, max):
        self.max = max
        self.sofar = []
    def __len__(self): return len(self.sofar)
    def __getitem__(self, i):
        if not 0 <= i < self.max: raise IndexError
        n = len(self.sofar)
        while n <= i:
            self.sofar.append(n*n)
            n = n+1
        return self.sofar[i]
n = 0
for x in Squares(10): n = n+x
if n != 285: raise TestFailed, 'for over growing sequence'

print 'try_stmt'
### try_stmt: 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite]
###         | 'try' ':' suite 'finally' ':' suite
### except_clause: 'except' [expr [',' expr]]
try:
    1/0
except ZeroDivisionError:
    pass
else:
    pass
try: 1/0
except EOFError: pass
except TypeError, msg: pass
except RuntimeError, msg: pass
except: pass
else: pass
try: 1/0
except (EOFError, TypeError, ZeroDivisionError): pass
try: 1/0
except (EOFError, TypeError, ZeroDivisionError), msg: pass
try: pass
finally: pass

print 'suite' # simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT
if 1: pass
if 1:
    pass
if 1:
    #
    #
    #
    pass
    pass
    #
    pass
    #

print 'test'
### and_test ('or' and_test)*
### and_test: not_test ('and' not_test)*
### not_test: 'not' not_test | comparison
if not 1: pass
if 1 and 1: pass
if 1 or 1: pass
if not not not 1: pass
if not 1 and 1 and 1: pass
if 1 and 1 or 1 and 1 and 1 or not 1 and 1: pass

print 'comparison'
### comparison: expr (comp_op expr)*
### comp_op: '<'|'>'|'=='|'>='|'<='|'<>'|'!='|'in'|'not' 'in'|'is'|'is' 'not'
if 1: pass
x = (1 == 1)
if 1 == 1: pass
if 1 != 1: pass
if 1 <> 1: pass
if 1 < 1: pass
if 1 > 1: pass
if 1 <= 1: pass
if 1 >= 1: pass
if 1 is 1: pass
if 1 is not 1: pass
if 1 in (): pass
if 1 not in (): pass
if 1 < 1 > 1 == 1 >= 1 <= 1 <> 1 != 1 in 1 not in 1 is 1 is not 1: pass

print 'binary mask ops'
x = 1 & 1
x = 1 ^ 1
x = 1 | 1

print 'shift ops'
x = 1 << 1
x = 1 >> 1
x = 1 << 1 >> 1

print 'additive ops'
x = 1
x = 1 + 1
x = 1 - 1 - 1
x = 1 - 1 + 1 - 1 + 1

print 'multiplicative ops'
x = 1 * 1
x = 1 / 1
x = 1 % 1
x = 1 / 1 * 1 % 1

print 'unary ops'
x = +1
x = -1
x = ~1
x = ~1 ^ 1 & 1 | 1 & 1 ^ -1
x = -1*1/1 + 1*1 - ---1*1

print 'selectors'
### trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME
### subscript: expr | [expr] ':' [expr]
f1()
f2(1)
f2(1,)
f3(1, 2)
f3(1, 2,)
f4(1, (2, (3, 4)))
v0()
v0(1)
v0(1,)
v0(1,2)
v0(1,2,3,4,5,6,7,8,9,0)
v1(1)
v1(1,)
v1(1,2)
v1(1,2,3)
v1(1,2,3,4,5,6,7,8,9,0)
v2(1,2)
v2(1,2,3)
v2(1,2,3,4)
v2(1,2,3,4,5,6,7,8,9,0)
v3(1,(2,3))
v3(1,(2,3),4)
v3(1,(2,3),4,5,6,7,8,9,0)
print
import sys, time
c = sys.path[0]
x = time.time()
x = sys.modules['time'].time()
a = '01234'
c = a[0]
c = a[-1]
s = a[0:5]
s = a[:5]
s = a[0:]
s = a[:]
s = a[-5:]
s = a[:-1]
s = a[-4:-3]

print 'atoms'
### atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictmaker] '}' | '`' testlist '`' | NAME | NUMBER | STRING
### dictmaker: test ':' test (',' test ':' test)* [',']

x = (1)
x = (1 or 2 or 3)
x = (1 or 2 or 3, 2, 3)

x = []
x = [1]
x = [1 or 2 or 3]
x = [1 or 2 or 3, 2, 3]
x = []

x = {}
x = {'one': 1}
x = {'one': 1,}
x = {'one' or 'two': 1 or 2}
x = {'one': 1, 'two': 2}
x = {'one': 1, 'two': 2,}
x = {'one': 1, 'two': 2, 'three': 3, 'four': 4, 'five': 5, 'six': 6}

x = `x`
x = `1 or 2 or 3`
x = x
x = 'x'
x = 123

### exprlist: expr (',' expr)* [',']
### testlist: test (',' test)* [',']
# These have been exercised enough above

print 'classdef' # 'class' NAME ['(' testlist ')'] ':' suite
class B: pass
class C1(B): pass
class C2(B): pass
class D(C1, C2, B): pass
class C:
    def meth1(self): pass
    def meth2(self, arg): pass
    def meth3(self, a1, a2): pass

# list comprehension tests
nums = [1, 2, 3, 4, 5]
strs = ["Apple", "Banana", "Coconut"]
spcs = ["  Apple", " Banana ", "Coco  nut  "]

print [s.strip() for s in spcs]
print [3 * x for x in nums]
print [x for x in nums if x > 2]
print [(i, s) for i in nums for s in strs]
print [(i, s) for i in nums for s in [f for f in strs if "n" in f]]
print [(lambda a:[a**i for i in range(a+1)])(j) for j in range(5)] 

def test_in_func(l):
    return [None < x < 3 for x in l if x > 2]

print test_in_func(nums)

def test_nested_front():
    print [[y for y in [x, x + 1]] for x in [1,3,5]]

test_nested_front()

check_syntax("[i, s for i in nums for s in strs]")
check_syntax("[x if y]")

suppliers = [
  (1, "Boeing"),
  (2, "Ford"),
  (3, "Macdonalds")
]

parts = [
  (10, "Airliner"),
  (20, "Engine"),
  (30, "Cheeseburger")
]

suppart = [
  (1, 10), (1, 20), (2, 20), (3, 30)
]

print [
  (sname, pname)
    for (sno, sname) in suppliers
      for (pno, pname) in parts
        for (sp_sno, sp_pno) in suppart
          if sno == sp_sno and pno == sp_pno
]