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This will also eliminate a dialyzer warning for unmatched returns,
and increase the coverage.
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The error checking code for INTEGER and BIT STRING was broken,
since it built an error tuple that was never returned.
Rewrite the error checking code, sharing most of the code between
INTEGER and BIT STRING. Make sure that we test for both duplicated
names and number, as well as for negative bit numbers for
BIT STRING.
This rewrite will eliminate two dialyzer warnings for unmatched
returns.
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A named number list as used for ENUMERATED and INTEGER can never
have an {identifier,...} tuple in its third position like this:
{'NamedNumber',Id,{identifier,_,_}}
because asn1ct_parser2:parse_NamedNumber/1 will always replace
an identifier tuple with an #Externaluereference{} record.
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Since most calls to asn1_error/3 throw its result, it makes more
sense to let asn1_error/3 itself throw the error tuple. Add the
return_asn1_error/3 to return the error tuple to use when we don't
want to throw it.
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* bjorn/asn1/cleanup/OTP-11727:
asn1ct_check: Use a return value to silence a dialyzer warning
asn1ct_check: Remove useless call to check_integer/3
asn1ct_check: Correct error handling for illegal OCTET STRING values
asn1ct: Silence dialyzer warnings for unmatched returns
asn1ct_table: Remove unused flexibility in table creation
asn1ct_table: Silence a dialyzer warning for unmatched return
asn1ct_gen: Silence dialyzer warnings for unmatched returns
asn1ct_value: Silence a dialyzer warning for unmatched return
asn1ct_tok: Check return value from file:close/1
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Attempting to subtype an extensible ENUMERATED like this:
BaseType ::= { foo, bar, ... }
SubType ::= BaseType ( foo )
would fail to compile with a message that 'foo' was undefined.
Reported-by: Morten Nygaard Åsnes
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Unfortunately the code in question is not covered by our test
suites, but it should be correct to do the same thing as in
the clause above.
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check_integer/3 can check nothing for an INTEGER without any named
values. Remove the useless call to silence a dialyzer warning for
unmatched return.
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The value for an OCTET STRING must be specified as either a bstring
or an hstring. Everything else (including character strings) is
illegal.
This correction also removes the offending code that caused an
unmatched return warning from dialyzer.
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* bjorn/asn1/fix-union-bug/OTP-11411:
Fix complicated union of INTEGER constraints
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A constraint that was an union of integer ranges:
Type ::= INTEGER (lb1..ub1 | ... | lbN..ubN)
would sometimes (depending on the values) not all always be properly
combined to a single effective range, but would become:
Type ::= INTEGER (lb2..ub2) (lb3..ub3)
If that type was used in a SEQUENCE:
S ::= SEQUENCE {
v Type
}
the constraint would be simplified, taking the intersection of the
ranges.
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For DER/PER/UPER, a value equal to the DEFAULT is not supposed to
be encoded.
BIT STRINGs values can be represented as Erlang terms in four
different ways: as an integer, as a list of zeroes and ones,
as a {Unused,Binary} tuple, or as an Erlang bitstring.
When encoding a BIT STRING, only certain representations of
BIT STRINGs values were recognized. All representations must
be recognized.
When decoding a DEFAULT value for a BIT STRING, the actual value
given in the decoding would be either an integer or a list
of zeroes and one (depending on how the literal was written in
the specification). We expect that the default value should be
in the same representation as any other BIT STRING value (i.e.
by default an Erlang bitstring, or a list if the 'legacy_bitstring'
option has been given, or as compact bitstring if 'compact_bitstring'
has been given).
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There is (differenct) code for reading .asn1db files both in
asn1ct and asn1_db. Consolidate the reading into one routine
in asn1db.
Another problem is that the encoding rule that the .asn1db
file was created for is not in the .asn1db, but only in the
generated Erlang module. It is much easier and safer to put
the encoding rule in the .asn1db file itself. We will also
put the version number of the asn1 application into the file,
to ensure that we don't use an old .asn1db file that could
potentially be incompatible.
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The Per argument is no longer used; it is only passed around.
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Simplify the backends by letting asn1ct_check replacing a
with the actual type.
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The name of the referenced object set name in #simpletableattributes{}
would when used by INSTANCE OF be an atom, but in all other cases
be a {Module,ObjectSetName} tuple. Simplify the code by always using
the latter format.
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Most types don't have any validation functions that does anything
useful, so it is sufficient to call normalize_value/4 for them.
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Unify the code for checking an enumeration value named in a
DEFAULT and in an ENUMERATED value. There is no need to handle
those cases differently. That also will also make sure that
the following works:
E ::= ENUMERATED { x, ..., y }
e E ::= x
(Extensible ENUMERATEDs were not handled when defining values.)
Always generate an error when an unknown enumeration value is
given (used in a DEFAULT, a message would be printed, but the
compilation would succeed). Also make sure that we always include
the line number for the incorrect enumeration.
Write a new test case and remove the extremely rudimentary
value_bad_enum_test/1 test case.
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Capture the common pattern of checking a list of named ASN.1
items in a check_fold/3 function.
Clean up checkt/3 using it, replacing the old-style catch
with a try..catch.
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Dialyzer issued two new warnings when the 'catch' was removed in
the previous commit.
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The code does record operations one step at the time and checks
for conditions that cannot happen.
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The compiler would crash when given code such as the following:
Type ::= INTEGER (lower<..<upper)
lower INTEGER ::= 0
lower INTEGER ::= 42
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The record #constraint{} is almost unused outside of the parser
except for two places in asn1ct_check.
The only correct usage of the record is in instance_of_constraints/2.
Eliminate that usage by updating the parser to pass that constraint
in the same way as all other constraints.
In check_integer_range/2, the record is used incorrectly. A
constraint for an integer will never be a list of #constraint{}
records. Therefore, the list comprehension will always produce
an empty list, and check_constr/2 will not actually check anything
(which is kind of lucky, since the 'ValueRange' range constraint
is incorrectly written - the lower and upper bounds should be in
a tuple).
For now, we will not attempt to actually start validating integer
ranges. Firstly (obviously) we will need to be sure that we
correctly handles all forms of constraints, and secondly we will
need to consider whether we need to produce a warning rather than an
error for compatibility reasons.
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The record #typereference{} is only used internally within
the asn1ct_parser2 module (the parser translates it to
an #'Externaltypereference{} record).
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* bjorn/asn1/fix-lost-extension-mark/OTP-10995:
Prevent loss of objects after the extension marker
Don't lose the extension mark for object set parameters
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In an object set with a single root object, objects after
the extension marker would be lost.
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When an object set is an actual parameter, the extension marker
for the object set could get lost.
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Also teach otp_SUITE:call_to_size/1 that calls to size/1 is no
longer allowed within the asn1 application.
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The constraint simplification pass need to be seriously rethought
and rewritten.
As a starting point, add a test case to test that equivalent ways
to write a constraint are reduced to the same simplified constraint.
Fix a few obvious bugs to make the test cases to pass.
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It is time to clean up the mess of back-ends.
Remove all the obsolete back-ends and simplify the options used
to select them.
New Option Old Equivalent
---------- --------------
ber ber_bin,optimize,nif
per per,optimize,nif
uper uper_bin
The old options will still be recognized and translated to the
new options, but will also print a warning.
That implies that deprecated features that only are implemented
in the old 'ber' back-end will no longer work (e.g. the
{Typename,Value} notation).
Also make the return type for the generated encode/2 function
consistent. It used to be a binary for per and uper, and an iolist
for ber. Always make it a binary.
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Fix a bug where a subtyped single value integer type where one or more values
were predefined would result in generated encoding code having faulty range
checks. See seq12102.
OTP-10139
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- Refactor and clean up asn1_db process
- Remove unused stop function in asn1ct.erl
- Remove infinite loop possibilites in asn1ct_check.erl
- test/1,2,3 now run in separate process
- Update documentation for new test options
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All table access is now performed in a separate module. This will allow
changes to how ETS is handled by changing only this module. Note that
the module exports a very ETS-like interface for now which would have to
be maintained even if the data format would change (to a hash map for
example).
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Enable re-use of integer definitions in subsequent definitions and
added clauses to check greatest common range for sequence definitions
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component relation attribute.
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