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Boxiang Sun
cython
Commits
d2a99890
Commit
d2a99890
authored
Jun 18, 2008
by
Dag Sverre Seljebotn
Browse files
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Browse Files
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Plain Diff
Better exception info reading for with statement
parent
21c0a027
Changes
10
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Inline
Side-by-side
Showing
10 changed files
with
142 additions
and
128 deletions
+142
-128
Cython/CodeWriter.py
Cython/CodeWriter.py
+4
-4
Cython/Compiler/ExprNodes.py
Cython/Compiler/ExprNodes.py
+3
-1
Cython/Compiler/Nodes.py
Cython/Compiler/Nodes.py
+23
-1
Cython/Compiler/ParseTreeTransforms.py
Cython/Compiler/ParseTreeTransforms.py
+25
-30
Cython/Compiler/Symtab.py
Cython/Compiler/Symtab.py
+1
-31
Cython/Compiler/Tests/TestParseTreeTransforms.py
Cython/Compiler/Tests/TestParseTreeTransforms.py
+40
-46
Cython/Compiler/TreeFragment.py
Cython/Compiler/TreeFragment.py
+14
-7
Cython/Compiler/Visitor.py
Cython/Compiler/Visitor.py
+13
-0
Cython/TestUtils.py
Cython/TestUtils.py
+2
-3
tests/run/withstat.pyx
tests/run/withstat.pyx
+17
-5
No files found.
Cython/CodeWriter.py
View file @
d2a99890
from
Cython.Compiler.Visitor
import
TreeVisitor
from
Cython.Compiler.Visitor
import
TreeVisitor
,
get_temp_name_handle_desc
from
Cython.Compiler.Nodes
import
*
from
Cython.Compiler.ExprNodes
import
*
from
Cython.Compiler.Symtab
import
TempName
"""
Serializes a Cython code tree to Cython code. This is primarily useful for
...
...
@@ -62,8 +61,9 @@ class CodeWriter(TreeVisitor):
self
.
endline
()
def
putname
(
self
,
name
):
if
isinstance
(
name
,
TempName
):
name
=
self
.
tempnames
.
setdefault
(
name
,
u"$"
+
name
.
description
)
tmpdesc
=
get_temp_name_handle_desc
(
name
)
if
tmpdesc
is
not
None
:
name
=
self
.
tempnames
.
setdefault
(
tmpdesc
,
u"$"
+
tmpdesc
)
self
.
put
(
name
)
def
comma_seperated_list
(
self
,
items
,
output_rhs
=
False
):
...
...
Cython/Compiler/ExprNodes.py
View file @
d2a99890
...
...
@@ -1060,7 +1060,6 @@ class NameNode(AtomicExprNode):
else
:
code
.
annotate
(
pos
,
AnnotationItem
(
'c_call'
,
'c function'
,
size
=
len
(
self
.
name
)))
class
BackquoteNode
(
ExprNode
):
# `expr`
#
...
...
@@ -1212,6 +1211,9 @@ class ExcValueNode(AtomicExprNode):
def
generate_result_code
(
self
,
code
):
pass
def
analyse_types
(
self
,
env
):
pass
class
TempNode
(
AtomicExprNode
):
# Node created during analyse_types phase
...
...
Cython/Compiler/Nodes.py
View file @
d2a99890
...
...
@@ -3329,18 +3329,24 @@ class ExceptClauseNode(Node):
# pattern ExprNode
# target ExprNode or None
# body StatNode
# excinfo_target NameNode or None optional target for exception info
# excinfo_target NameNode or None used internally
# match_flag string result of exception match
# exc_value ExcValueNode used internally
# function_name string qualified name of enclosing function
# exc_vars (string * 3) local exception variables
child_attrs
=
[
"pattern"
,
"target"
,
"body"
,
"exc_value"
]
child_attrs
=
[
"pattern"
,
"target"
,
"body"
,
"exc_value"
,
"excinfo_target"
]
exc_value
=
None
excinfo_target
=
None
excinfo_assignment
=
None
def
analyse_declarations
(
self
,
env
):
if
self
.
target
:
self
.
target
.
analyse_target_declaration
(
env
)
if
self
.
excinfo_target
is
not
None
:
self
.
excinfo_target
.
analyse_target_declaration
(
env
)
self
.
body
.
analyse_declarations
(
env
)
def
analyse_expressions
(
self
,
env
):
...
...
@@ -3358,6 +3364,17 @@ class ExceptClauseNode(Node):
self
.
exc_value
=
ExprNodes
.
ExcValueNode
(
self
.
pos
,
env
,
self
.
exc_vars
[
1
])
self
.
exc_value
.
allocate_temps
(
env
)
self
.
target
.
analyse_target_expression
(
env
,
self
.
exc_value
)
if
self
.
excinfo_target
is
not
None
:
import
ExprNodes
self
.
excinfo_tuple
=
ExprNodes
.
TupleNode
(
pos
=
self
.
pos
,
args
=
[
ExprNodes
.
ExcValueNode
(
pos
=
self
.
pos
,
env
=
env
,
var
=
self
.
exc_vars
[
0
]),
ExprNodes
.
ExcValueNode
(
pos
=
self
.
pos
,
env
=
env
,
var
=
self
.
exc_vars
[
1
]),
ExprNodes
.
ExcValueNode
(
pos
=
self
.
pos
,
env
=
env
,
var
=
self
.
exc_vars
[
2
])
])
self
.
excinfo_tuple
.
analyse_expressions
(
env
)
self
.
excinfo_tuple
.
allocate_temps
(
env
)
self
.
excinfo_target
.
analyse_target_expression
(
env
,
self
.
excinfo_tuple
)
self
.
body
.
analyse_expressions
(
env
)
for
var
in
self
.
exc_vars
:
env
.
release_temp
(
var
)
...
...
@@ -3387,6 +3404,10 @@ class ExceptClauseNode(Node):
if
self
.
target
:
self
.
exc_value
.
generate_evaluation_code
(
code
)
self
.
target
.
generate_assignment_code
(
self
.
exc_value
,
code
)
if
self
.
excinfo_target
is
not
None
:
self
.
excinfo_tuple
.
generate_evaluation_code
(
code
)
self
.
excinfo_target
.
generate_assignment_code
(
self
.
excinfo_tuple
,
code
)
old_exc_vars
=
code
.
exc_vars
code
.
exc_vars
=
self
.
exc_vars
self
.
body
.
generate_execution_code
(
code
)
...
...
@@ -4497,6 +4518,7 @@ bad:
Py_XDECREF(*tb);
return -1;
}
"""
]
#------------------------------------------------------------------------------------
Cython/Compiler/ParseTreeTransforms.py
View file @
d2a99890
from
Cython.Compiler.Visitor
import
VisitorTransform
from
Cython.Compiler.Visitor
import
VisitorTransform
,
temp_name_handle
from
Cython.Compiler.Nodes
import
*
from
Cython.Compiler.ExprNodes
import
*
from
Cython.Compiler.TreeFragment
import
TreeFragment
...
...
@@ -71,10 +72,13 @@ class PostParse(VisitorTransform):
def
visit_CStructOrUnionDefNode
(
self
,
node
):
return
self
.
visit_StatNode
(
node
,
True
)
class
WithTransform
(
VisitorTransform
):
# EXCINFO is manually set to a variable that contains
# the exc_info() tuple that can be generated by the enclosing except
# statement.
template_without_target
=
TreeFragment
(
u"""
import sys as SYS
MGR = EXPR
EXIT = MGR.__exit__
MGR.__enter__()
...
...
@@ -84,15 +88,15 @@ class WithTransform(VisitorTransform):
BODY
except:
EXC = False
if not EXIT(*
SYS.exc_info()
):
if not EXIT(*
EXCINFO
):
raise
finally:
if EXC:
EXIT(None, None, None)
"""
,
u"WithTransformFragment"
)
"""
,
temps
=
[
u'MGR'
,
u'EXC'
,
u"EXIT"
,
u"SYS)"
],
pipeline
=
[
PostParse
()])
template_with_target
=
TreeFragment
(
u"""
import sys as SYS
MGR = EXPR
EXIT = MGR.__exit__
VALUE = MGR.__enter__()
...
...
@@ -103,47 +107,38 @@ class WithTransform(VisitorTransform):
BODY
except:
EXC = False
if not EXIT(*
SYS.exc_info()
):
if not EXIT(*
EXCINFO
):
raise
finally:
if EXC:
EXIT(None, None, None)
"""
,
u"WithTransformFragment"
)
"""
,
temps
=
[
u'MGR'
,
u'EXC'
,
u"EXIT"
,
u"VALUE"
,
u"SYS"
],
pipeline
=
[
PostParse
()])
def
visit_Node
(
self
,
node
):
self
.
visitchildren
(
node
)
return
node
def
visit_WithStatNode
(
self
,
node
):
excinfo_name
=
temp_name_handle
(
'EXCINFO'
)
excinfo_namenode
=
NameNode
(
pos
=
node
.
pos
,
name
=
excinfo_name
)
excinfo_target
=
NameNode
(
pos
=
node
.
pos
,
name
=
excinfo_name
)
if
node
.
target
is
not
None
:
result
=
self
.
template_with_target
.
substitute
({
u'EXPR'
:
node
.
manager
,
u'BODY'
:
node
.
body
,
u'TARGET'
:
node
.
target
},
temps
=
(
u'MGR'
,
u'EXC'
,
u"EXIT"
,
u"VALUE"
,
u"SYS"
),
pos
=
node
.
pos
)
u'TARGET'
:
node
.
target
,
u'EXCINFO'
:
excinfo_namenode
},
pos
=
node
.
pos
)
# Set except excinfo target to EXCINFO
result
.
stats
[
4
].
body
.
stats
[
0
].
except_clauses
[
0
].
excinfo_target
=
excinfo_target
else
:
result
=
self
.
template_without_target
.
substitute
({
u'EXPR'
:
node
.
manager
,
u'BODY'
:
node
.
body
,
},
temps
=
(
u'MGR'
,
u'EXC'
,
u"EXIT"
,
u"SYS"
),
pos
=
node
.
pos
)
return
result
.
body
.
stats
class
CallExitFuncNode
(
Node
):
def
analyse_types
(
self
,
env
):
pass
def
analyse_expressions
(
self
,
env
):
self
.
exc_vars
=
[
env
.
allocate_temp
(
PyrexTypes
.
py_object_type
)
for
x
in
xrange
(
3
)
]
u'EXCINFO'
:
excinfo_namenode
},
pos
=
node
.
pos
)
# Set except excinfo target to EXCINFO
result
.
stats
[
4
].
body
.
stats
[
0
].
except_clauses
[
0
].
excinfo_target
=
excinfo_target
def
generate_result
(
self
,
code
):
code
.
putln
(
"""{
PyObject* type; PyObject* value; PyObject* tb;
__Pyx_GetException(
}"""
)
return
result
.
stats
Cython/Compiler/Symtab.py
View file @
d2a99890
...
...
@@ -16,29 +16,6 @@ from TypeSlots import \
import
ControlFlow
import
__builtin__
class
TempName
(
object
):
"""
Use instances of this class in order to provide a name for
anonymous, temporary functions. Each instance is considered
a seperate name, which are guaranteed not to clash with one
another or with names explicitly given as strings.
The argument to the constructor is simply a describing string
for debugging purposes and does not affect name clashes at all.
NOTE: Support for these TempNames are introduced on an as-needed
basis and will not "just work" everywhere. Places where they work:
- (none)
"""
def
__init__
(
self
,
description
):
self
.
description
=
description
# Spoon-feed operators for documentation purposes
def
__hash__
(
self
):
return
id
(
self
)
def
__cmp__
(
self
,
other
):
return
cmp
(
id
(
self
),
id
(
other
))
possible_identifier
=
re
.
compile
(
ur"(?![0-9])\
w+$
", re.U).match
nice_identifier = re.compile('^[a-zA-Z0-0_]+$').match
...
...
@@ -1098,20 +1075,13 @@ class ModuleScope(Scope):
var_entry.is_readonly = 1
entry.as_variable = var_entry
tempctr = 0
class LocalScope(Scope):
def __init__(self, name, outer_scope):
Scope.__init__(self, name, outer_scope, outer_scope)
def mangle(self, prefix, name):
if isinstance(name, TempName):
global tempctr
tempctr += 1
return u"%s%s%d" % (Naming.temp_prefix, name.description, tempctr)
else:
return prefix + name
return prefix + name
def declare_arg(self, name, type, pos):
# Add an entry for an argument of a function.
...
...
Cython/Compiler/Tests/TestParseTreeTransforms.py
View file @
d2a99890
...
...
@@ -6,8 +6,8 @@ class TestPostParse(TransformTest):
def
test_parserbehaviour_is_what_we_coded_for
(
self
):
t
=
self
.
fragment
(
u"if x: y"
).
root
self
.
assertLines
(
u"""
(root):
Module
Node
body
: IfStatNode
(root):
StatList
Node
stats[0]
: IfStatNode
if_clauses[0]: IfClauseNode
condition: NameNode
body: ExprStatNode
...
...
@@ -17,14 +17,13 @@ class TestPostParse(TransformTest):
def
test_wrap_singlestat
(
self
):
t
=
self
.
run_pipeline
([
PostParse
()],
u"if x: y"
)
self
.
assertLines
(
u"""
(root): ModuleNode
body: StatListNode
stats[0]: IfStatNode
if_clauses[0]: IfClauseNode
condition: NameNode
body: StatListNode
stats[0]: ExprStatNode
expr: NameNode
(root): StatListNode
stats[0]: IfStatNode
if_clauses[0]: IfClauseNode
condition: NameNode
body: StatListNode
stats[0]: ExprStatNode
expr: NameNode
"""
,
self
.
treetypes
(
t
))
def
test_wrap_multistat
(
self
):
...
...
@@ -34,16 +33,15 @@ class TestPostParse(TransformTest):
y
"""
)
self
.
assertLines
(
u"""
(root): ModuleNode
body: StatListNode
stats[0]: IfStatNode
if_clauses[0]: IfClauseNode
condition: NameNode
body: StatListNode
stats[0]: ExprStatNode
expr: NameNode
stats[1]: ExprStatNode
expr: NameNode
(root): StatListNode
stats[0]: IfStatNode
if_clauses[0]: IfClauseNode
condition: NameNode
body: StatListNode
stats[0]: ExprStatNode
expr: NameNode
stats[1]: ExprStatNode
expr: NameNode
"""
,
self
.
treetypes
(
t
))
def
test_statinexpr
(
self
):
...
...
@@ -51,15 +49,14 @@ class TestPostParse(TransformTest):
a, b = x, y
"""
)
self
.
assertLines
(
u"""
(root): ModuleNode
body: StatListNode
stats[0]: ParallelAssignmentNode
stats[0]: SingleAssignmentNode
lhs: NameNode
rhs: NameNode
stats[1]: SingleAssignmentNode
lhs: NameNode
rhs: NameNode
(root): StatListNode
stats[0]: ParallelAssignmentNode
stats[0]: SingleAssignmentNode
lhs: NameNode
rhs: NameNode
stats[1]: SingleAssignmentNode
lhs: NameNode
rhs: NameNode
"""
,
self
.
treetypes
(
t
))
def
test_wrap_offagain
(
self
):
...
...
@@ -70,24 +67,23 @@ class TestPostParse(TransformTest):
x
"""
)
self
.
assertLines
(
u"""
(root): ModuleNode
body: StatListNode
stats[0]: ExprStatNode
expr: NameNode
stats[1]: ExprStatNode
expr: NameNode
stats[2]: IfStatNode
if_clauses[0]: IfClauseNode
condition: NameNode
body: StatListNode
stats[0]: ExprStatNode
expr: NameNode
(root): StatListNode
stats[0]: ExprStatNode
expr: NameNode
stats[1]: ExprStatNode
expr: NameNode
stats[2]: IfStatNode
if_clauses[0]: IfClauseNode
condition: NameNode
body: StatListNode
stats[0]: ExprStatNode
expr: NameNode
"""
,
self
.
treetypes
(
t
))
def
test_pass_eliminated
(
self
):
t
=
self
.
run_pipeline
([
PostParse
()],
u"pass"
)
self
.
assert_
(
len
(
t
.
body
.
stats
)
==
0
)
self
.
assert_
(
len
(
t
.
stats
)
==
0
)
class
TestWithTransform
(
TransformTest
):
...
...
@@ -99,7 +95,6 @@ class TestWithTransform(TransformTest):
self
.
assertCode
(
u"""
$SYS = (import sys)
$MGR = x
$EXIT = $MGR.__exit__
$MGR.__enter__()
...
...
@@ -109,7 +104,7 @@ class TestWithTransform(TransformTest):
y = z ** 3
except:
$EXC = False
if (not $EXIT($
SYS.exc_info()
)):
if (not $EXIT($
EXCINFO
)):
raise
finally:
if $EXC:
...
...
@@ -124,7 +119,6 @@ class TestWithTransform(TransformTest):
"""
)
self
.
assertCode
(
u"""
$SYS = (import sys)
$MGR = x
$EXIT = $MGR.__exit__
$VALUE = $MGR.__enter__()
...
...
@@ -135,7 +129,7 @@ class TestWithTransform(TransformTest):
y = z ** 3
except:
$EXC = False
if (not $EXIT($
SYS.exc_info()
)):
if (not $EXIT($
EXCINFO
)):
raise
finally:
if $EXC:
...
...
Cython/Compiler/TreeFragment.py
View file @
d2a99890
...
...
@@ -6,9 +6,8 @@ import re
from
cStringIO
import
StringIO
from
Scanning
import
PyrexScanner
,
StringSourceDescriptor
from
Symtab
import
BuiltinScope
,
ModuleScope
from
Visitor
import
VisitorTransform
from
Nodes
import
Node
from
Symtab
import
TempName
from
Visitor
import
VisitorTransform
,
temp_name_handle
from
Nodes
import
Node
,
StatListNode
from
ExprNodes
import
NameNode
import
Parsing
import
Main
...
...
@@ -109,7 +108,7 @@ class TemplateTransform(VisitorTransform):
self
.
substitutions
=
substitutions
tempdict
=
{}
for
key
in
temps
:
tempdict
[
key
]
=
TempNam
e
(
key
)
tempdict
[
key
]
=
temp_name_handl
e
(
key
)
self
.
temps
=
tempdict
self
.
pos
=
pos
return
super
(
TemplateTransform
,
self
).
__call__
(
node
)
...
...
@@ -164,7 +163,7 @@ def strip_common_indent(lines):
return
lines
class
TreeFragment
(
object
):
def
__init__
(
self
,
code
,
name
,
pxds
=
{}
):
def
__init__
(
self
,
code
,
name
=
"(tree fragment)"
,
pxds
=
{},
temps
=
[],
pipeline
=
[]
):
if
isinstance
(
code
,
unicode
):
def
fmt
(
x
):
return
u"
\
n
"
.
join
(
strip_common_indent
(
x
.
split
(
u"
\
n
"
)))
...
...
@@ -173,12 +172,20 @@ class TreeFragment(object):
for
key
,
value
in
pxds
.
iteritems
():
fmt_pxds
[
key
]
=
fmt
(
value
)
self
.
root
=
parse_from_strings
(
name
,
fmt_code
,
fmt_pxds
)
t
=
parse_from_strings
(
name
,
fmt_code
,
fmt_pxds
)
mod
=
t
t
=
t
.
body
# Make sure a StatListNode is at the top
if
not
isinstance
(
t
,
StatListNode
):
t
=
StatListNode
(
pos
=
mod
.
pos
,
stats
=
[
t
])
for
transform
in
pipeline
:
t
=
transform
(
t
)
self
.
root
=
t
elif
isinstance
(
code
,
Node
):
if
pxds
!=
{}:
raise
NotImplementedError
()
self
.
root
=
code
else
:
raise
ValueError
(
"Unrecognized code format (accepts unicode and Node)"
)
self
.
temps
=
temps
def
copy
(
self
):
return
copy_code_tree
(
self
.
root
)
...
...
@@ -186,7 +193,7 @@ class TreeFragment(object):
def
substitute
(
self
,
nodes
=
{},
temps
=
[],
pos
=
None
):
return
TemplateTransform
()(
self
.
root
,
substitutions
=
nodes
,
temps
=
temps
,
pos
=
pos
)
temps
=
self
.
temps
+
temps
,
pos
=
pos
)
...
...
Cython/Compiler/Visitor.py
View file @
d2a99890
...
...
@@ -166,6 +166,19 @@ def replace_node(ptr, value):
else
:
getattr
(
parent
,
attrname
)[
listidx
]
=
value
tmpnamectr
=
0
def
temp_name_handle
(
description
):
global
tmpnamectr
tmpnamectr
+=
1
return
u"__cyt_%d_%s"
%
(
tmpnamectr
,
description
)
def
get_temp_name_handle_desc
(
handle
):
if
not
handle
.
startswith
(
u"__cyt_"
):
return
None
else
:
idx
=
handle
.
find
(
u"_"
,
6
)
return
handle
[
idx
+
1
:]
class
PrintTree
(
TreeVisitor
):
"""Prints a representation of the tree to standard output.
Subclass and override repr_of to provide more information
...
...
Cython/TestUtils.py
View file @
d2a99890
...
...
@@ -77,8 +77,8 @@ class TransformTest(CythonTest):
To create a test case:
- Call run_pipeline. The pipeline should at least contain the transform you
are testing; pyx should be either a string (passed to the parser to
create a post-parse tree) or a
ModuleN
ode representing input to pipeline.
The result will be a transformed result
(usually a ModuleNode)
.
create a post-parse tree) or a
n
ode representing input to pipeline.
The result will be a transformed result.
- Check that the tree is correct. If wanted, assertCode can be used, which
takes a code string as expected, and a ModuleNode in result_tree
...
...
@@ -93,7 +93,6 @@ class TransformTest(CythonTest):
def
run_pipeline
(
self
,
pipeline
,
pyx
,
pxds
=
{}):
tree
=
self
.
fragment
(
pyx
,
pxds
).
root
assert
isinstance
(
tree
,
ModuleNode
)
# Run pipeline
for
T
in
pipeline
:
tree
=
T
(
tree
)
...
...
tests/run/withstat.pyx
View file @
d2a99890
from
__future__
import
with_statement
__doc__
=
u"""
>>> no_as()
enter
hello
exit <type 'NoneType'> <type 'NoneType'> <type 'NoneType'>
>>> basic()
enter
value
...
...
@@ -8,12 +12,12 @@ exit <type 'NoneType'> <type 'NoneType'> <type 'NoneType'>
>>> with_exception(None)
enter
value
exit <type 'type'> <
type 'exceptions.
Exception'> <type 'traceback'>
exit <type 'type'> <
class 'withstat.My
Exception'> <type 'traceback'>
outer except
>>> with_exception(True)
enter
value
exit <type 'type'> <
type 'exceptions.
Exception'> <type 'traceback'>
exit <type 'type'> <
class 'withstat.My
Exception'> <type 'traceback'>
>>> multitarget()
enter
1 2 3 4 5
...
...
@@ -24,18 +28,25 @@ enter
exit <type 'NoneType'> <type 'NoneType'> <type 'NoneType'>
"""
class
MyException
(
Exception
):
pass
class
ContextManager
:
def
__init__
(
self
,
value
,
exit_ret
=
None
):
self
.
value
=
value
self
.
exit_ret
=
exit_ret
def
__exit__
(
self
,
a
,
b
,
c
):
print
"exit"
,
type
(
a
),
type
(
b
),
type
(
c
)
def
__exit__
(
self
,
a
,
b
,
tb
):
print
"exit"
,
type
(
a
),
type
(
b
),
type
(
tb
)
return
self
.
exit_ret
def
__enter__
(
self
):
print
"enter"
return
self
.
value
def
no_as
():
with
ContextManager
(
"value"
):
print
"hello"
def
basic
():
with
ContextManager
(
"value"
)
as
x
:
...
...
@@ -45,7 +56,7 @@ def with_exception(exit_ret):
try
:
with
ContextManager
(
"value"
,
exit_ret
=
exit_ret
)
as
value
:
print
value
raise
Exception
()
raise
My
Exception
()
except
:
print
"outer except"
...
...
@@ -56,3 +67,4 @@ def multitarget():
def
tupletarget
():
with
ContextManager
((
1
,
2
,
(
3
,
(
4
,
5
))))
as
t
:
print
t
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