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0b196b78
Commit
0b196b78
authored
Jul 20, 2013
by
Paweł Szostek
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add TW's vhdl parser (not coupled yet)
parent
8cdbe392
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vhdl_parser.py
src/vhdl_parser.py
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src/vhdl_parser.py
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0b196b78
#!/usr/bin/python
def
remove_gaps
(
buf
,
delims
,
gap_chars
,
lower_strings
=
False
):
da
=
{}
for
d
in
delims
:
da
[
d
]
=
False
prev_is_gap
=
False
buf2
=
""
lines
=
[]
for
c
in
buf
:
for
d
in
delims
:
if
(
c
==
d
):
da
[
d
]
=
not
da
[
d
]
within_string
=
any
(
da
.
values
())
and
not
(
c
in
delims
)
if
(
not
within_string
):
if
(
c
in
gap_chars
):
if
(
not
prev_is_gap
):
prev_is_gap
=
True
buf2
+=
" "
else
:
prev_is_gap
=
False
buf2
+=
c
if
(
c
==
";"
or
c
==
"
\n
"
):
lines
.
append
(
buf2
);
buf2
=
""
else
:
buf2
+=
c
;
prev_is_gap
=
False
return
lines
from
dep_solver
import
DepParser
,
DepRelation
,
DepFile
class
VHDLParser
(
DepParser
):
def
parse
(
self
,
f_deps
,
filename
):
f
=
open
(
filename
,
"r"
)
buf
=
""
# stage 1: strip comments
for
l
in
f
:
ci
=
l
.
find
(
"--"
)
if
(
ci
==
0
):
continue
while
(
ci
>
0
):
nquotes
=
l
[:
ci
]
.
count
(
'"'
)
# ignore comments in strings
if
(
nquotes
%
2
==
0
):
l
=
l
[:
ci
-
1
];
break
ci
=
l
.
find
(
"--"
,
ci
+
1
)
buf
+=
l
# stage 2: remove spaces, crs, lfs, strip strings (we don't need them)
buf2
=
""
string_literal
=
char_literal
=
False
prev_is_gap
=
False
gap_chars
=
"
\r\n\t
"
lines
=
[]
for
c
in
buf
:
if
(
c
==
'"'
and
not
char_literal
):
string_literal
=
not
string_literal
if
(
c
==
"'"
and
not
string_literal
):
char_literal
=
not
char_literal
within_string
=
(
string_literal
or
char_literal
)
and
(
c
!=
'"'
)
and
(
c
!=
"'"
)
if
(
not
within_string
):
if
(
c
in
gap_chars
):
if
(
not
prev_is_gap
):
prev_is_gap
=
True
buf2
+=
" "
else
:
prev_is_gap
=
False
buf2
+=
c
.
lower
()
if
(
c
==
";"
):
lines
.
append
(
buf2
);
buf2
=
""
else
:
prev_is_gap
=
False
import
re
patterns
=
{
"use"
:
"^ *use *(
\
w+) *
\
. *(
\
w+) *. *
\
w+ *;"
,
"entity"
:
"^ *entity +(
\
w+) +is +(port|generic)"
,
"package"
:
"^ *package +(
\
w+) +is"
,
"arch_begin"
:
"^ *architecture +(
\
w+) +of +(
\
w+) +is +"
,
"arch_end"
:
"^ *end +(
\
w+) +;"
,
"instance"
:
"^ *(
\
w+) *
\
: *(
\
w+) *(port|generic) *map"
}
compiled_patterns
=
map
(
lambda
p
:
(
p
,
re
.
compile
(
patterns
[
p
])),
patterns
)
within_architecture
=
False
for
l
in
lines
:
matches
=
filter
(
lambda
(
k
,
v
):
v
!=
None
,
map
(
lambda
(
k
,
v
):
(
k
,
re
.
match
(
v
,
l
)),
compiled_patterns
))
if
(
not
len
(
matches
)):
continue
what
,
g
=
matches
[
0
]
if
(
what
==
"use"
):
f_deps
.
add_relation
(
DepRelation
(
g
.
group
(
1
)
+
"."
+
g
.
group
(
2
),
DepRelation
.
USE
,
DepRelation
.
PACKAGE
))
if
(
what
==
"package"
):
f_deps
.
add_relation
(
DepRelation
(
g
.
group
(
1
),
DepRelation
.
PROVIDE
,
DepRelation
.
PACKAGE
))
elif
(
what
==
"entity"
):
f_deps
.
add_relation
(
DepRelation
(
g
.
group
(
1
),
DepRelation
.
PROVIDE
,
DepRelation
.
ENTITY
))
elif
(
what
==
"package"
):
f_deps
.
add_relation
(
DepRelation
(
g
.
group
(
1
),
DepRelation
.
PROVIDE
,
DepRelation
.
PACKAGE
))
elif
(
what
==
"arch_begin"
):
arch_name
=
g
.
group
(
1
)
within_architecture
=
True
elif
(
what
==
"arch_end"
and
within_architecture
and
g
.
group
(
1
)
==
arch_name
):
within_architecture
=
False
elif
(
what
==
"instance"
and
within_architecture
):
f_deps
.
add_relation
(
DepRelation
(
g
.
group
(
1
),
DepRelation
.
USE
,
DepRelation
.
ENTITY
))
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