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x-RPySOM
Commits
d3e822d9
Commit
d3e822d9
authored
Sep 20, 2013
by
Tobias Pape
Committed by
Stefan Marr
Sep 21, 2013
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make the file and string stream type-compatible
parent
17795b45
Changes
1
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1 changed file
with
40 additions
and
4 deletions
+40
-4
src/som/compiler/sourcecode_compiler.py
src/som/compiler/sourcecode_compiler.py
+40
-4
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src/som/compiler/sourcecode_compiler.py
View file @
d3e822d9
import
os
from
rpython.rlib.streamio
import
open_file_as_stream
from
StringIO
import
StringIO
from
rpython.rlib.streamio
import
open_file_as_stream
,
Stream
,
StreamError
from
som.compiler.parser
import
Parser
from
som.compiler.class_generation_context
import
ClassGenerationContext
class
_StringStream
(
Stream
):
def
__init__
(
self
,
string
):
self
.
_string
=
string
self
.
pos
=
0
self
.
max
=
len
(
string
)
-
1
def
write
(
self
,
data
):
raise
StreamError
(
"StringStream is not writable"
)
def
truncate
(
self
,
size
):
raise
StreamError
(
"StringStream is immutable"
)
def
peek
(
self
):
if
self
.
pos
<
self
.
max
:
return
self
.
_string
[
self
.
pos
:]
else
:
return
''
def
tell
(
self
):
return
self
.
pos
def
seek
(
self
,
offset
,
whence
):
if
whence
==
0
:
self
.
pos
=
max
(
0
,
offset
)
elif
whence
==
1
:
self
.
pos
=
max
(
0
,
self
.
pos
+
offset
)
elif
whence
==
2
:
self
.
pos
=
max
(
0
,
self
.
max
+
offset
)
else
:
raise
StreamError
(
"seek(): whence must be 0, 1 or 2"
)
def
read
(
self
,
n
):
assert
isinstance
(
n
,
int
)
end
=
self
.
pos
+
n
data
=
self
.
_string
[
self
.
pos
:
end
]
self
.
pos
+=
len
(
data
)
return
data
def
compile_class_from_file
(
path
,
filename
,
system_class
,
universe
):
return
_SourcecodeCompiler
().
compile
(
path
,
filename
,
system_class
,
universe
)
...
...
@@ -40,7 +76,7 @@ class _SourcecodeCompiler(object):
return
result
def
compile_class_string
(
self
,
stream
,
system_class
,
universe
):
self
.
_parser
=
Parser
(
StringIO
(
stream
),
universe
)
self
.
_parser
=
Parser
(
_StringStream
(
stream
),
universe
)
result
=
self
.
_compile
(
system_class
,
universe
)
return
result
...
...
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