accordingly
* include/abg-comparison.h (class diff_context): New class.
(class diff::{ctxt_, reported_once_, currently_reporting_}): New
data members.
(diff::diff): Initialize the new data members above.
(diff::{context, currently_reporting, reported_once}): New
accessors.
(compute_diff, var_diff::var_diff, pointer_diff::pointer_diff)
(reference_diff::reference_diff, qualified_type_diff)
(enum_diff:enum_diff, class_diff::class_diff)
(scope_diff::scope_diff, function_decl_diff::function_decl_diff)
(type_decl_diff::type_decl_diff, typedef_diff::typedef_diff)
(translation_unit_diff::translation_unit_diff, corpus_diff::corpus_diff):
Take an additional pointer to diff_context.
* abg-comparison.cc (diff_context::{has_diff_for,
has_diff_for_types, add_diff}): New methods.
(try_to_diff, compute_diff_for_types, compute_diff_for_decls)
(represent): Take an additional pointer to
diff_context in argument. In the later function, do not re-report
a diff if it has already been reported, or if it's being reported
already.
(var_diff::var_diff, pointer_diff::pointer_diff)
(reference_diff::reference_diff)
(qualified_type_diff::qualified_type_diff, enum_diff::enum_diff)
(class_diff::class_diff, scope_diff::scope_diff)
(function_decl_diff::function_decl_diff, type_decl::type_decl)
(typedef_diff::typedef_diff)
(translation_unit_diff::translation_unit_diff)
(corpus_diff::corpus_diff): Take an additional pointer to
diff_context in argument.
({pointer_diff, qualified_type_diff,
reference_type_diff}::report): do not re-report a diff about the
underlying type if it has already been reported, or if it's being
reported already.
(enum_diff::report): Fix this to properly use the populated lookup
tables.
(compute_diff): take an additional pointer to diff_context in
argument. For the var_decl, pointer_diff reference_type_diff,
qualified_type_diff enum_diff, scope_diff, function_decl_diff,
type_decl_diff and typedef_diff overloads, do not re-build a diff
object, if one exits already. Otherwise, record the new diff
object created so that it can be re-used later.
(enum_diff::ensure_lookup_tables_populated): Fix logic to avoid
one loop.
(class_decl::priv::{deleted_member_functions_,
inserted_member_functions_, changed_member_function_}): New
members to support reporting about member functions changes.
(class_decl::{lookup_tables_empty, clear_lookup_tables, length):
Update for the new additions above.
(class_decl::ensure_lookup_tables_populated): Likewise. Fix to
properly use the lookup tables and also avoid a going through
several loops to compute the changed members.
(class_decl::report): Flip a switch to make the beginning and end
of the reporting, in the context. Also, do not try to report
again, if we were already reporting this diff. Fix quite some
spots to properly use the lookup tables.
(scope_diff::ensure_lookup_tables_populated): Skip decl-only
classes during comparison. Fix some thinkos. Fix logic to avoid a
loop.
(scope_diff::report): Adjust to pass a context to
compute_diff_for_types.
(function_decl_diff::ensure_lookup_tables_populated): Fix logic to
avoid a loop.
(function_decl_diff::report): Adjust call to
compute_diff_for_types to pass the context.
(typedef::report): Avoid re-reporting the diff of the underlying
types, if we are already reporting it.
(corpus_diff::priv::ensure_lookup_tables_populated): Use the
pretty representation of the function rather than its name to key
the maps of deleted and added functions. Fix logic to avoid going
through an additional loop for the changed functions.
(corpus_diff::report): Add a title for removed/added/changed
functions. Fix indentation for added/removed/changed functions.
* include/abg-ir.h (class_decl::comparison_started_): New member
* src/abg-dwarf-reader.cc (is_public_decl): Style fix.
(is_declaration_only_): New static function.
(build_class_type_and_add_to_ir): Create decl-only classes (IR) for
classes flagged as declaration-only in the DWARF.
* src/abg-hash.cc (class_decl:#️⃣:operator()): Do not forget to
include the "is_declaration_only" flag into the hashing.
* src/abg-ir.cc (class_decl::operator==): Look through decl-only
classes to get their definitions and compare the definitions
instead. Avoid comparing member types and fns if the comparison
of this type has already started.
* src/abg-reader.cc (build_class_decl): Set the definition of a
declaration, when we see it.
* tests/data/test-bidiff/test-qual-type0-report.txt: Update.
* tests/data/test-bidiff/test-struct0-report.txt: Likewise.
* tests/data/test-bidiff/test-struct1-report.txt: Likewise.
signed-off-by: Dodji Seketeli <dodji@redhat.com>
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* include/abg-diff-utils.h (end_of_frr_d_path_in_k_plus_delta):
Favour moving left when the two abscissas at the previous steps
are equal.
(compute_diff): Update the length of the shortest edit script when
the size of one of the inputs is zero.
* tests/test-core-diff.cc (in_out_spec): Add a new input to diff
two sequences for regression testing.
* tests/data/test-core-diff/report13.txt: New reference for
the comparison of the new regression test above.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* src/abg-dwarf-reader.cc (insert_decl_into_ir_under_scope)
(build_namespace_decl_and_add_to_ir, build_enum_type)
(build_class_type_and_add_to_ir, build_ir_node_from_die)
(build_ir_node_from_die): Remove.
* tests/data/test-read-dwarf/test0.abi: Update because now type
IDs can be used before they are defined.
* tests/data/test-read-dwarf/test1.abi: Likewise.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* tests/data/test-read-dwarf/test0.cc: Define a member function
out-of-line, outside of its namespace.
* tests/data/test-read-dwarf/test0.abi: Update the .abi file.
* tests/data/test-read-dwarf/test0: Update the resulting binary.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* include/abg-reader.h (read_corpus_from_native_xml)
(read_corpus_from_native_xml_file): Declare new entry points.
* include/abg-writer.h (write_corpus_to_native_xml)
(write_corpus_to_native_xml_file): Likewise.
* src/abg-reader.cc (read_translation_unit_from_input): Renamed
read_input into this. Support new 'path' attribute for
'abi-instr' XML element.
(read_corpus_from_input): New static function.
(read_translation_unit_from_file)
(read_translation_unit_from_buffer)
(read_translation_unit_from_istream): Update wrt read_input ->
read_translation_unit_from_input.
(read_corpus_from_native_xml, read_corpus_from_native_xml)
(read_corpus_from_native_xml_file): Define new entry points.
* src/abg-writer.cc (write_translation_unit): Write 'path'
attribute into the 'abi-instr' xml element.
(write_corpus_to_native_xml, write_corpus_to_native_xml_file):
Define new entry points.
* tools/abg-tools-utils.h (file_type::{FILE_TYPE_XML_CORPUS,
FILE_TYPE_ZIP_CORPUS}): New enumerators.
* tools/abg-tools-utils.cc (guess_file_type): Support detection of
the new xml file format containing a document root 'abi-corpus'
root element.
* tools/bidiff.cc (main): Support diffing xml corpus-es and zip
corpus-es.
* tools/bidw.cc (main): Recognize elf files before reading them.
* tools/bilint.cc (main): Support reading xml/zip corpus-es too.
* tests/data/test-read-write/test[0-23].xml: Update 'path'
attribute.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* include/abg-ir.h (translation_unit::translation_unit): Take an
address_size parameter.
(translation_unit::{get_address_size, set_address_size}): New
accessors.
* src/abg-ir.cc (translation_unit::priv::address_size_): New
private member.
(translation_unit::translation_unit): Take an address_size
parameter.
(translation_unit::{get_address_size, set_address_size}): Define
these new methods.
* src/abg-reader.cc (read_input): Read the "address-size"
attribute from the abi-instr element.
* src/abg-writer.cc (write_translation_unit): Write the
"address-size" attribute.
* tests/data/test-read-write/test23.xml: New test input.
* tests/test-read-write.cc (in_out_specs): Add the new test above
to the list of files to read and write back.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* src/abg-reader.cc (build_function_parameter): Support reading
the "is-variadic" attribute.
* src/abg-writer.cc (write_function_decl): Support writing the
"is-variadic" attribute.
* tests/data/test-read-write/test22.xml: New test input.
* tests/test-read-write.cc (in_out_specs): Add the new test to the
list of files to read and write back.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* include/abg-fwd.h (get_type_declaration): Declare function.
* include/abg-ir.h (class decl_base): Add class_decl as a friend.
This to be able to call decl_base::set_scope from class_decl.
(scope_decl::add_member_decl): Make this virtual protected, so
that it can be called (virtually) from e.g, class_decl.
(type_decl_sptr, typedef_decl_sptr): New convenience typedefs.
(class_decl::add_member_decl): New virtual overload for
scope_decl::add_member_decl.
(class_decl::{add_member_type, add_data_member,
add_member_function}): New overloads.
* src/abg-ir.cc (add_decl_to_scope): Benign style cleanup.
(get_type_declaration): Define new function.
(class_decl::add_member_decl): New method.
(class_decl::add_member_type): Avoid silently added a new member
type when that member type has already been (perhaps
inadvertently) added to a scope already. Rather, put a strict
assert in place there. Also add a new overload that constructs
the member type out of a classic type and adds it to the class.
(class_decl::{add_data_member, add_member_function}): Likewise.
(class_decl::{add_member_function_template,
add_member_class_template}): Avoid silently added a new member
template when that template has already been (perhaps
inadvertently) added to a scope already. Rather, put a strict
assert in place there.
* src/abg-reader.cc (push_decl_to_current_scope): Take a an extra
flag saying if the current decl should be added to the current
scope as well (in addition to being pushed onto the stack of
scopes maintained in the reader context).
(push_and_key_type_decl): Likewise, take that extra flag and pass
it to push_decl_to_current_scope.
(build_function_decl, build_var_decl, build_type_decl)
(build_qualified_type_decl, build_pointer_type_def)
(build_reference_type_def, build_enum_type_decl, build_typedef_decl)
(build_function_tdecl, build_class_tdecl): Likewise.
(build_class_decl): Likewise. When building member data, types,
and functions, make sure /not/ to add the data, type of function to
the current scope before adding it to the class_decl. This was
making the member not being added to the class because it already
had a scope.
(build_type_tparameter, build_type_composition)
(build_non_type_tparameter, build_template_tparameter)
(build_type): Adjust to add the template parm to the current scope
explicitly, like previously.
(handle_type_decl): Use build_type_decl function. Add the
type_decl to the current scope, like previously.
(handle_namespace_decl, handle_qualified_type_decl)
(handle_pointer_type_def, handle_reference_type_def)
(handle_enum_type_decl, handle_typedef_decl, handle_var_decl)
(handle_function_decl, handle_class_decl, handle_function_tdecl)
(handle_class_tdecl): Adjust to add the decl to the current scope,
like previously.
* tests/data/test-read-write/test21.xml: New test input with
member type(def).
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* include/abg-diff-utils.h (point::set): New overload..
(point::{add, operator<, operator>, operator<=, operator>=}): New
methods.
(point::operator!=): Constify.
(point::operator==): Constify. Cleanup.
(point::operator=): Keep emptiness.
(class snake): New class definition
(d_path_vec::{over_bounds, offset}): New methods.
(d_path_vec::check_index_against_bound): Don't take a bound
parameter anymore. Use the new over_bound method above. Fix up
error reporting.
(d_path_vec::d_path_vec): Fix d_path_vec size allocation.
(d_path_vec::operator[]): Use the d_path_vec::at method to check
all accesses against the bounds. This is slower, but at least we
can expect to have something that is more robust. We can remove
the bound checking later when we are sure the code has been tested
enough. Also use the new offset() method.
(d_path_vec::at): Take long long.
(ends_of_furthest_d_paths_overlap): Constify input parameters.
(end_of_fr_d_path_in_k, end_of_frr_d_path_in_k_plus_delta): Take
an instance of the new snake in parameter, rather than a bare end
point that wasn't carrying enough information about the snake.
Record the snake which consists of up to four points: a begin
point, an intermediate point, a diagonal start point and an end
point. Return that snake upon successful completion.
(compute_middle_snake): Take an instance of snake, rather than the
two points that were supposed to represent a snake and with which
we were loosing information before. Revisit/simplify the logic of
this function; this literally goes forward or in reverse, gets the
resulting snake returned by the end_of_fr_d_path_in_k and
end_of_frr_d_path_in_k_plus_delta functions, detect if these snakes
overlap and just return the current snake. Much simpler. The
caller now gets a snake, which has much more information than the
previous snake approximation made of just two points. Bonus
point, this follows almost to the word, what the paper says.
(maybe_record_match_point, find_snake_start_point): Remove these
as there are not used by compute_middle_snake anymore.
(print_snake, ses_len): Update these to take/handle a snake.
(snake_end_points): New declaration.
(compute_diff): When we are getting an empty first sequence, this
means that we are inserting the second sequence *before* the
beginning of the first sequence; keep this information by setting
the insertion point index to -1, rather than zero. Update this to
get/handle snakes, rather than free points vaguely representing
snakes. Now that compute_middle_snake returns real snakes, handle
the information we are getting. Basically for edit scripts of
length equal to 1, as the snake carries all the necessary
information about the non-diagonal edge (as well as the diagonal
edges), we (can) now precisely update the current edit script (as
well as the longest common sub-sequence). For edit scripts of
length greater than 1, better at which points to divide the
problem and consequently, at which points to conquer it back --
better following The Paper to the letter.
(display_edit_script): Update this for the use of instances of
snake.
* src/abg-diff-utils.cc (ends_of_furthest_d_paths_overlap): Update
for constification of inputs.
(snake_end_points): Define new function.
(compute_middle_snake): Adapt for the taking an instance of snake.
* tests/test-diff2.cc (main): Update for using instances of snake.
* tests/test-core-diff.cc: Add new tests.
* tests/data/test-core-diff/report0.txt: Update for output
adaptation.
* tests/data/test-core-diff/report6.txt: Likewise.
* tests/data/test-core-diff/report7.txt: Likewise.
* tests/data/test-core-diff/report8.txt: New test data.
* tests/data/test-core-diff/report9.txt: Likewise.
* tests/data/test-core-diff/report10.txt: Likewise.
* tests/data/test-core-diff/report11.txt: Likewise.
* tests/data/test-core-diff/report12.txt: Likewise.
* tests/data/test-core-diff/report3.txt: Likewise.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* include/abg-ir.h (type_shared_ptr_equal::operator()): Fix thinko
in checking for the boolean value of the pointers to types.
* src/abg-ir.cc (type_decl::operator==(const decl_base&)): Do not
forget to compare the decl_base part of the type too.
(type_decl::operator==(const type_base&)): To ease maintenance,
re-use the equality operator that takes a decl_base.
(scope_type_decl::operator==(const type_base&)): Likewise.
(qualified_type_def::operator==(const type_base&)): Likewise.
(compare_function_types): New sub-routine to compare function
types. It fixes an infinite recursion when comparing two methods
of the same class.
(function_type::operator==(const type_base&)): Use the new
compare_function_types function.
(class_decl::operator==(const decl_base&)): Fix a thinko in the
first test of the function. Use a dedicated scope for each class
section comparison; that way, there won't be any chance to misuse
the variables pertaining to a different section. Fix the member
function sections; we were mistakenly using the variables for the
*data* section there.
(class_decl::operator==(const type_base&)): Re-use the operator
that takes a decl_base.
(class_decl::operator==(const class_decl&)): Don't remove
const-ness during the static cast.
(class_decl::member_function::operator==(const member_function&)):
Do not remove the reference from the static cast.
(class_decl::member_class_template::operator==(const
member_base&)): Likewise.
(type_tparameter::operator==(const template_parameter&)):
Likewise.
(template_tparameter::operator==(const template_parameter&)):
Likewise.
(function_tdecl::operator==(const template_decl&)): Likewise.
(class_tdecl::operator==(const template_decl&)): Likewise.
(class_tdecl::operator==(const class_tdecl&)): Likewise.
* tests/data/test-read-write/test12.xml: Update this because the
test now correctly considers two type template parameters at the
same index as being equivalent.
* tests/data/test-read-write/test13.xml: Likewise.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* include/abg-diff-utils.h (compute_middle_snake): After the
overlap determination happened, finding the middle snake can
require keep on building the current path until the "end". The
end meaning reaching the max of D. And that max is (M + N)/2 + 1.
In the extreme cases were middle snake was on the very last step
(M + N) + 1, we were not finding the middle snake. Fix this.
(compute_diff): When d == 1 and the first edge on the edit graph
is a non-diagonal edge and when a_base != a_begin, we were failing
to properly initialize x,y to find that non-diagonal edge. Also
we were failing to correctly compute the size of the sequence.
Fix these.
* tests/test-core-diff.cc: Add a new regression test for the two
cases above.
* tests/data/test-core-diff/report7.txt: New reference data for
the new regression test.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* include/abg-diff-utils.h (point::{operator!=,operator==}): New
operators.
(end_of_fr_d_path_in_k, end_of_frr_d_path_in_k_plus_delta): Allow
the initial point (-1,-1) that is not a point addressing elements
of the input sequences, but that is the starting point of the
forward paths and the ending point of reverse paths in the "Linear
Refinement" of the algorithm.
(is_match_point, maybe_record_match_point)
(find_snake_start_point): New functions.
(find_last_snake_in_path): Remove this. It's not used anymore.
(compute_middle_snake): Allow checking for overlapping paths even
on points that are outside of the edit graph boundaries. Once the
overlap is detected, if a non-empty snake has been seen already,
report it as the middle snake. Otherwise, keep building the path
until the end and report the last snake encountered as the middle
snake. Add comments.
(compute_diff): For the d == 1 case, fix the logic of the finding
the non-diagonal edge. Fix typos. Add comments.
(display_edit_script): Fix report glitches.
* tests/data/test-core-diff/report3.txt: Update as per the report
glitch above.
* tests/data/test-core-diff/report4.txt: Likewise.
* tests/data/test-core-diff/report5.txt: Likewise.
* tests/data/test-core-diff/report6.txt: New reference report for
a new test.
* tests/test-core-diff.cc: Add a new test for negative delta.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* configure.ac: Support detection of libzip dependency. Define
new DEPS_CFLAGS and DEPS_LIBS variables for use in
Makefile.am to refer to the dependency headers and
libraries.
* doc/website/mainpage.txt: Update this to talk about the new
libzip dependency.
* include/Makefile.am: Add abg-libzip-utils.h to the build system.
* include/abg-corpus.h (corps): Hide abigail::corpus's private behind a
pimpl idiom.
(corpus::{drop_translation_units, get_file_path, set_file_path,
write, read}): New methods.
* include/abg-libxml-utils.h (new_reader_from_buffer): Declare new
function.
* include/abg-libzip-utils.h: New file.
* src/Makefile.am: Add abg-corpus.cc and abg-libzip-utils.cc to
the build system. Refer to the library and headers dependencies
via the new DEPS_LIBS and DEPS_CFLAGS variables.
* src/abg-corpus.cc: New file.
* src/abg-ir.cc (translation::set_path): New method.
* src/abg-libxml-utils.cc (new_reader_from_buffer): Define new
function.
* src/abg-libzip-utils.cc: New file.
* src/abg-reader.cc (translation_unit::read): New overload.
* src/abg-writer.cc: Inject the names from the std namespace into
the abigail namespace, rather than into abigail::writer.
(abigail::translation_unit::write): New overload. This can now
use ofstream and the other stuff from std that are injected in the
abigail:: namespace.
* tests/Makefile.am: Add tests/test-write-read-archive.cc to the
build system; use that to build runtestwritereadarchive. Also add
the input test data from
tests/data/test-write-read-archive/test[0-4].xml.
* /tests/data/test-write-read-archive/test[0-4].xml: New test
input data files.
* tests/test-write-read-archive.cc: New test for this archive
write/read support.
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
* src/abg-ir.h (class_decl::base_spec::base_spec): Take an offset
and a is_virtual flag.
(class_decl::base_spec::{get_is_virtual, get_offset_in_bits}): New
methods.
(class_decl::has_no_base_nor_member): New method declaration..
* src/abg-ir.cc (class_decl::base_spec::base_spec): Take an offset
and a is_virtual flag
(class_decl::has_no_base_nor_member): Define it.
* src/abg-reader.cc (read_offset_in_bits): Renamed
read_var_offset_in_bits into this.
(read_is_virtual): New static function.
(build_class_decl): Read the 'layout-offset-in-bits' and the
'is-virtual' of the base class specifier. Adjust for the
read_var_offset_in_bits -> read_offset_in_bits rename.
* src/abg-writer.cc (write_layout_offset): New overload for the
base class specifiers.
(write_class_decl): If the class has no member or base class, make
it a proper empty xml element. Write the offset and the
is-virtual attribute.
* tests/data/test-read-write/test20.xml: New test input data.
* tests/test-read-write.cc: De-serialize the test above, serialize
it back and compare that both versions are the same.
* src/abg-ir.h (class_decl::base_spec::base_spec): Move this
out-of-line. Add a new constructor for clients compiled without
RTTI.
* src/abg-ir.cc (class_decl::base_spec::base_spec): This is now
here out-of-line. Define the new constructor for clients compiled
without RTTI.
* tests/data/test-read-write/test19.xml: New test case input for
base classes.
* tests/test-read-write.cc: De-serialize and serialize the new
test case input above.
* abg-ir.h (class_decl::set_earlier_declaration): Move this
out-of-line and add an overload.
* src/abg-ir.cc (class_decl::set_earlier_declaration): Moved this
out-of-line here and add an overload.
* src/abg-reader.cc (build_class_decl): Really read the
'decl-of-decl-id' property. Do not make the definition use the id
of the declaration. Both have their id.
* src/abg-writer.cc (write_class_decl): Put a space before the
property "def-of-decl-id".
* tests/data/test-read-write/test18.xml: New test input.
* tests/test-read-write.cc: De-serialize this new input, serialize
it back and make sure both versions are identical.
* src/abg-ir.h (function_decl::parameter::parameter): New
constructor with variadic parameter marker.
(function_decl::m_type): Make this protected to let method_decl
inheriting class to access it.
(function_decl::get_type): Move this out-of-line.
(class method_type, method_type_hash): New types.
(enum class_decl::access_specifier): Add no_access new enumerator.
(class_decl::data_member::data_member): Move this out-of-line.
(class_decl::data_member::~data_member): Declare virtual
destructor.
(class method_decl): New class.
(class member_function): Make this inherit method_decl, instead of
function_decl.
(class_decl::class_decl): New constructors.
(class_decl::{hashing_started, is_declaration_only,
set_earlier_declaration, get_earlier_declaration}): New methods.
* src/abg-ir.cc (add_decl_to_scope): If a decl is already in a
scope, don't add it to this scope.
(get_global_scope): Make this work when passed an instance of
global_scope.
(dynamic_type_hash::operator()): Add support for method_type.
(method_type::{method_type, set_class_type, ~method_type, })
(method_type_hash::operator()): New defintions.
(function_decl::get_type, class_decl::class_decl): Move these
out-of-line here.
(class_decl::method_decl::{method_decl, ~method_decl, get_type}):
New definitions.
(class_decl::member_function::member_function): Move this
out-of-line here. Support method_decl.
(class_decl::data_member::data_member): Likewise.
(class_decl_hash::operator()): Guard this against endless loop.
* src/abg-reader.cc (write_class_is_declaration_only): New static
function.
(write_var_decl): Take a flag to write the mangled name or not.
(write_function_decl): Take a flag to skip the first parameter.
(write_cdtor_const_static): Use 'yes' instead of 'true' as value
of the properties.
(write_decl, write_function_template_decl): Adjust wrt the new
signatures of write_var_decl and write_function_decl.
(write_enum_type_decl): Simplify call to write_location.
(write_class_decl): Support serializing declaration-only classes.
* src/abg-writer.cc:
* tests/data/test-read-write/test17.xml: New test input.
* tests/test-read-write.cc: De-serialize the above, and serialize it back.
* tests/data/test-read-write/test10.xml: Update this test.
* src/abg-ir.h (class function_type): Forward decl prior to class
function_decl.
(function_decl::parameter): Pass string by const reference. Add a
variadic marker member and initialize it.
(function_decl::parameter::get_type): Add a non-const overload.
(function_decl::parameter::get_variadic_marker): New getter.
(function_decl::function_decl) Take a const reference to a vector
for parameters, type size/alignment. Add two overloads that takes a
pointer to function_type.
(function_decl::get_parameters): Move this out-of-line.
(function_decl::append_parameter(s)): Renamed
function_decl::add_parameter(s) into these. Move it out-of-line.
Add an overload.
(function_decl::{get_type, set_type}): New declaration.
(function_decl::get_return_type): Move this out-of-line.
(function_decl::is_variadic): New in-line function.
(function_decl::m_type): New data member.
(function_decl::{m_parms, m_return_type}): Remove. This are now
carried by function_decl::m_type.
(class function_type, struct function_type_hash): New
declarations.
(member_function::member_function): Take a vector of pointers to
parameters. Take size/align of the type of the member function.
Adjust initialization.
* src/abg-ir.cc (dynamic_type_hash): Hash instance of
function_type accessed through a pointer.
(function_type::{operator==, ~function_type})
(function_type_hash::operaror(), function_decl::{get_return_type,
}, function_decl::parameter:#️⃣:operator()): New definitions.
(function_decl::function_decl): The out-of-line definitions of the
declarations above.
(function_decl::append_parameter): Moved this out-of-line from
inline function_decl::add_parameter. Make this rely on the
underlying m_type.
(function_decl::operator==): Adjust for use of vector for the
parameters. Also, there is no need anymore to compare the
parameters or the return types as they are compared by the
comparison of the function types.
* src/abg-reader.cc (build_function_decl): Read the new size/alignment
attributes on the function-decl element. Build a function_type
and use it to build the function_decl. Parameters and return type
are now hung off of the function_type.
(handle_function_decl): use build_function_decl.
* src/abg-writer.cc (write_function_decl): Write the new
size/alignment properties of the function-decl element. Adjust
for the use of vectors for function parameters now.
* tests/data/test-read-write/test10.xml: Adjust for the presence
of size/alignment properties in the function-decl element now.
* tests/data/test-read-write/test11.xml: Likewise.
* tests/data/test-read-write/test12.xml: Likewise.
* tests/data/test-read-write/test13.xml: Likewise.
* tests/data/test-read-write/test14.xml: Likewise.
* tests/data/test-read-write/test9.xml: Likewise.
* src/abg-ir.cc (class_decl::add_member_function_template): Fix
comment.
(class_decl::add_member_class_template)
(class_decl::member_class_template::operator==)
(class_decl::member_class_template_hash::operator()): New
definitions.
(class_decl::operator==): Compare member templates. Fix logic.
(class_decl::data_member_hash::operator())
(class_decl::member_function_hash::operator())
(class_decl::member_function_template_hash::operator()): Don't
hash the is_static boolean as it's hashed as part of the 'member'
sub-object hashing.
(class_decl::member_function_template::operator==): Move this out
of line here, from the header file.
(class_decl_hash::operator()): Hash member class templates.
* src/abg-ir.h (class_decl::member::{m_is_static,is_static}): Add the is_static
boolean here, so that it's factorized out of the inherited classes
of this class.
(class_decl::data_member::{is_static, m_is_static})
(class_decl::member_function::{is_static, m_is_static})
(class_decl::member_function_template::{is_static, m_is_static}): Remove this
as it's now part of the base 'member' class.
(class_decl::data_member::operator==)
(class_decl::member_function::operator==): Don't compare the
is_static boolean as it's now compared as part of the 'member'
sub-object comparison.
(class_decl::member_function_template::operator==): Move this
out-of-line into src/abg-ir.cc.
(class class_decl::member_class_template, struct
class_decl::member_class_template_hash)
(class_decl::{add_member_class_template,
get_member_class_templates}): New declarations.
(class_decl::member_class_templates_type): New typedef.
* src/abg-reader.cc (build_class_decl): Support de-serializing
member class templates.
* src/abg-writer.cc (write_class_decl): Likewise, support
serializing member class templates.
* tests/data/test-read-write/test16.xml: New test input.
* tests/test-read-write.cc (int_out_specs[]): Add the new test
input to the list of inputs that are de-serialized and serialized
back.
* tests/Makefile.am: Add the new test input to the distribution.
* src/abg-ir.cc (class_template_decl::class_template_decl)
(class_template_decl::set_pattern)
(class_template_decl::operator==)
(class_template_decl::~class_template_decl)
(class_template_decl_hash::operator())
(class_tmpl_shared_ptr_hash::operator()): New definitions.
* src/abg-ir.h (class class_template_decl, struct
class_tmpl_shared_ptr_hash, struct class_tmpl_shared_ptr_hash):
New declarations.
* src/abg-reader.cc (read_context::const_class_tmpl_map_it): New
typedef.
(read_context::get_fn_tmpl_decl): Fix comment.
(read_context::{get_class_tmpl_decl,key_class_tmpl_decl})
(build_class_template_decl, handle_class_template_decl): New
definitions.
(read_context::m_class_tmpl_map): New member.
(handle_element): Support "class-template-decl" xml elements
nodes.
(build_class_decl): Add missing bits to comment.
(build_function_template_decl): Fix spacing.
* src/abg-writer.cc (class_tmpl_shared_ptr_map): New typedef.
(write_context::m_class_tmpl_map): New member.
(write_context::get_id_for_class_tmpl, write_class_template_decl):
New definitions.
(write_template_parameters): Factorize this this out from ...
(write_function_template_decl): ... here.
(write_decl): Support writing instances of class_template_decl.
Fix spacing.
* tests/data/test-read-write/test15.xml: New test input.
* tests/Makefile.am: Add the new test15.xml input to the
distribution.
* tests/test-read-write.cc (in_out_specs): Add the new test15.xml
test to the list of serialized output to be de-serialized and
serialized back.
* src:abg-ir.h: Move template declarations before class
class_decl, so that class_decl can have member templates.
(class class_decl::member_function_template)
(class_decl::add_member_function_template)
(class_decl::{base_specs_type, member_types_type,
data_members_types, member_functions_type,
member_function_templates_type}): New declarations.
* src/abg-ir.cc (class_decl::add_member_function_template)
(class_decl::member_function_template_hash::operator()): New
definitions.
(class_decl_hash::operator()): Support hashing for member
function templates.
* src/abg-reader.cc (build_class_decl): Use the new
class_decl::{member_types_type, data_members_type,
member_functions_type, base_specs_type} types. Support member
function templates.
* src/abg-writer.cc (write_cdtor_const_static): New definition.
(write_class_decl): Support member function templates.
* tests/data/test-read-write/test14.xml: New input data.
* tests/Makefile.am: Add it to the distribution.
* tests/test-read-write.cc (InOutSpec int_out_specs): De-serialize
the new test input file, serialize it back and diff both results.
* src/abg-ir.h (class tmpl_parm_type_composition): New
declaration.
* src/abg-ir.cc
(tmpl_parm_type_composition::tmpl_parm_type_composition)
(tmpl_parm_type_composition::~tmpl_parm_type_composition): New
definitions.
* src/abg-reader.cc (build_tmpl_parm_type_composition): New
function.
(build_template_parameter): Support template parameter type
composition.
* src/abg-writer.cc (write_tmpl_parm_type_composition): New
function.
(write_template_non_type_parameter): Fix type-id attribute.
(write_template_parameter): Support template parameter type
composition.
* tests/data/test-read-write/test13.xml: New test input.
* tests/Makefile.am: Add it to the distribution.
* tests/test-read-write.cc (InOutSpec in_out_spec): Add test13.xml
to the list of xml file that are de-serialized and serialized back.
* src/abg-ir.cc (decl_base_hash::operator()): Don't hash the
context for decls in general.
* src/abg-reader.cc (read_context::push_decl_to_current_scope)
(read_context::push_and_key_type_decl): Add an overload that takes
a node and update_depth_info boolean.
(build_var_decl, build_type_decl, build_qualified_type_decl)
(build_pointer_type_def, build_reference_type_def)
(build_enum_type_decl, build_type_decl)
(build_template_type_parameter, build_template_non_type_parameter)
(build_template_template_parameter, build_template_parameter)
(build_type): Make these functions take an update_depth_info
parameter. Pass it do read_context::push_and_key_type_decl or
read_context::push_decl_to_current_scope rather than call
update_read_context.
(build_function_decl, build_class_decl)
(build_function_template_decl): Change the seen_by_reader
parameter into update_depth_info. Pass the update_depth_info bool
to read_context::push_decl_to_current_scope rather than call
update_depth_info here.
(handle_class, handle_function_template_decl): Adjust.
* tests/data/test-read-write/test12.xml: Add new test input.
* tests/test-read-write.cc (InOutSpec in_out_specs): Add it to the
list of input to de-serialize, serialize back and compare the two.
* tests/Makefile.am: Add the new test input to the distribution.
* src/abg-ir.h (function_decl::set_return_type): New inline
definition.
(class template_decl, struct template_decl_hash, class
template_parameter, struct template_parameter_hash, struct
dynamic_template_parameter_hash, struct
template_parameter_shared_ptr_hash, class template_type_parameter)
(struct template_type_parameter_hash, class
template_non_type_parameter, struct
template_non_type_parameter_hash, class
template_template_parameter, struct
template_template_parameter_hash, class function_template_decl)
(struct function_template_decl_hash, struct
fn_tmpl_shared_ptr_hash): New declarations.
* src/abg-ir.cc (dynamic_type_hash::operator()): Add hashing for
template template, and template type parameters.
(template_decl_hash::operator, template_decl::~template_decl)
(template_decl::operator==, template_parameter::operator==)
(template_parameter_hash::operator())
(dynamic_template_parameter_hash::operator())
(template_type_parameter::operator==)
(template_type_parameter::~template_type_parameter)
(template_type_parameter_hash::operator())
(template_non_type_parameter::operator==)
(template_non_type_parameter::~template_non_type_parameter)
(template_non_type_parameter_hash::operator())
(template_template_parameter::operator==)
(template_template_parameter::~template_template_parameter)
(template_template_parameter_hash::operator())
(function_template_decl::operator==)
(function_template_decl_hash::operator())
(fn_tmpl_shared_ptr_hash::operator())
(function_template_decl::~function_template_decl()): New
definitions.
* src/abg-reader.cc (read_context::get_fn_tmpl_decl)
(read_context::key_fn_tmpl_decl): New functions.
(read_context::m_fn_tmpl_map): New data member.
(read_context::key_type_decl): Renamed read_context::add_type_decl
into this.
(read_context::push_decl_to_current_scope): Renamed
read_context::finish_decl_creation into this. Add an assert.
(read_context::push_and_key_type_decl): Renamed
read_context::finish_type_decl_creation into this. Adjust to the
use of push_decl_to_current_scope and key_type_decl.
(build_function_template_decl, build_template_type_parameter)
(build_template_non_type_parameter)
(build_template_template_parameter, build_template_parameter)
(handle_function_template_decl): New functions.
(handle_element): Call handle_function_template_decl.
(build_function_decl): Take a bool parameter to update depth
information in parsing context. Move instantiation of
function_decl before parsing its xml sub-nodes. Update the depth
info in the parsing context if necessary. Push the newly
intantiated decl to scope. And then parse the sub nodes. Do not
forget to add the fn parameters and return type using
function_decl::add_parameter and function_decl::set_return_type.
(build_var_decl, build_type_decl, build_qualified_type_decl)
(build_pointer_type_def, build_reference_type_def)
(build_enum_type_decl, build_typedef_decl, handled_type_decl)
(handle_qualified_type_decl, handle_pointer_type_def)
(handle_reference_type_def, handle_enum_type_decl)
(handle_typedef_decl, handle_var_decl, handle_function_decl)
(handle_class_decl): Adjust.
(build_class_decl): Take a bool parameter to update depth
information in parsing context. Add comment. Wait for the class
members to be built, before keying (and thus hashing it) the
class.
(build_type): Fix logic, and adjust.
* src/abg-writer.cc (write_context::type_has_existing_id)
(write_context::get_id_for_fn_tmpl, write_template_type_parameter)
(write_template_non_type_parameter)
(write_template_template_parameter, write_template_parameter)
(write_function_template_decl): New functions.
(write_context::get_id_for_type): Simplify logic.
(write_decl): Support writing function template.
* tests/data/test-read-write/test11.xml: New test input.
* tests/test-read-write.cc (InoutSpec in_out_specs[]):
De-serialize the new test11.xml test, serialize it back and diff
output and input.
* tests/Makefile.am: Add test11.xml to the distribution.
* src/abg-ir.h (scope_decl::scope_decl)
(scope_type_decl::scope_type_decl): Don't set mangled name for
scope_decl instances as it doesn't make sense.
(var_decl::var_decl): Pass the type shared pointer by value.
(struct var_decl_hash, function_decl::parameter::operator==)
(struct function_decl::parameter_hash, function_decl::operator==)
(struct function_decl_hash, class class_decl, struct
class_decl_hash): New declarations.
* src/abg-ir.cc (scope_type_decl::scope_type_decl): Don't set the
mangled name. It doesn't make sense for scope_decls.
(dynamic_type_hash::operator): Fix comment. Run the hashing for
scope_type_decl instances *after* running it for class_decl
instance, otherwise, the class_decl instances case will never get
hit.
(var_decl::var_decl): Pass the type shared pointer by value.
(function_decl::operator==, class_decl::operator==)
(class_decl_hash::operator()): New fns.
* src/abg-libxml-utils.h (get_xml_node_depth): Declare new fn.
(XML_READER_GET_ATTRIBUTE): Fix comment.
(XML_NODE_GET_ATTRIBUTE): New getter macro.
* src/abg-libxml-utils.cc (get_xml_node_depth): New definition.
* src/abg-reader.cc (update_read_context)
(update_depth_info_of_read_context, read_visibility, read_binding)
(read_access, read_size_and_alignment, read_static)
(read_var_offset_in_bits, read_cdtor_const, build_function_decl)
( build_var_decl, build_type_decl, build_qualified_type_decl)
(build_pointer_type_def, build_reference_type_def)
(build_enum_type_decl, build_typedef_decl, build_class_decl)
(build_type, handle_class_decl): New functions or overloads.
(handle_element): Update to handle "class-decl" xml elements.
* src/abg-writer.cc (write_size_and_alignment, write_access)
(write_class, do_indent_to_level, get_indent_to_level): New fns.
(write_decl): Update to serialize instances of class_decl.
(write_type_decl, write_pointer_type_def)
(write_reference_type_def): Use the new write_size_and_alignment instead of
writing the attributes directly.
* tests/data/test-read-write/test10.xml: New test file.
* tests/Makefile.am: Add tests/data/test-read-write/test10.xml to
the build system.
* tests/test-read-write.cc (in_out_spec): De-serialize
data/test-read-write/test10.xml, serialize it back into
output/test-read-write/test10.xml, and compare the two output that
should be identical.
* src/abg-reader.cc (handle_enum_type_decl): The name of the
element holding the underlying type is now "underlying-type", no
more "base".
* src/abg-writer.cc (write_enum_type_decl): Likewise.
* tests/data/test-read-write/test6.xml: Likewise.
* src/abg-ir.h (decl_base::binding, decl_base::get_mangled_name)
(decl_base::set_mangled_name, decl_base::m_mangled_name): New
declarations.
(scope_decl::scope_decl: type_decl::type_decl)
(scope_type_decl::scope_type_decl, typedef_decl::typedef_decl):
Initialize mangled_name.
(namespace_decl::namespace_decl): Initialize visibility.
(class var_decl): New declaration.
* src/abg-ir.cc (decl_base::decl_base, scope_decl::scope_decl)
(type_decl::type_decl, scope_type_decl::scope_type_decl):
Initialize mangled name.
(namespace_decl::namespace_decl): Initialize visibility.
(qualified_type_def::qualified_type_def)
(pointer_type_def::pointer_type_def)
(reference_type_def::reference_type_def): By default, set the
visibility to the same as for the underlying type.
(enum_type_decl::enum_type_decl, typedef_decl::typedef_decl):
Initialize mangled name.
(var_decl::var_decl, var_decl::operator==, var_decl::~var_decl):
New definitions.
* src/abg-reader.cc (read_visibility, read_binding, handle_var_decl): New
definitions.
(read_file): Handle var-decl elements.
* src/abg-writer.cc (write_location): Rename write_decl_location
into this.
(write_var_decl, write_visibility, write_binding): New definitions.
(write_decl, write_type_decl, write_qualified_type_def)
(write_pointer_type_def, write_reference_type_def)
(write_enum_type_decl, write_typedef_decl): Adjust to use
write_location.
* tests/data/test-read-write/test8.xml: New test input.
* tests/test-read-write.cc: De-serialize the above and serialize
it back and ensure both are equal.
* tests/Makefile.am: add tests/data/test-read-write/test8.xml to
the distribution.
* src/abg-ir.cc (dynamic_type_hash::operator()): Handle hashing of
a pointer to an instance of typedef_decl.
(typedef_decl::typedef_decl, typedef_decl::operator==)
(typedef_decl::operator==, typedef_decl::get_underlying_type)
(typedef_decl::~typedef_decl): New definitions.
* src/abg-ir.h (class typedef_decl, struct typedef_decl_hash): New
declarations.
* src/abg-reader.cc (handle_typedef_decl): New definition.
(handle_element): Handle de-serialization of typedef-decl element.
* src/abg-writer.cc (write_typedef_decl): New definition.
(write_decl): Handle serialization of an instance of typedef_decl.
* tests/data/test-read-write/test7.xml: New test.
* tests/Makefile.am: Add it to the distribution.
* tests/test-read-write.cc: De-serialize the content of the new
test, serialize it back and diff both.
* src/abg-ir.h (class enum_type_decl, struct enum_type_decl_hash):
New declarations.
* src/abg-ir.cc (dynamic_type_hash::operator()): Add hashing
support for enum_type_decl.
(enum_type_decl::enum_type_decl)
(enum_type_decl::get_underlying_type)
(enum_type_decl::get_enumerators, enum_type_decl::~enum_type_decl)
(enum_type_decl::operator==): New definitions.
* src/abg-reader.cc (handle_enum_type_decl): New definition.
(handle_element): Handle "enum-decl" element.
* src/abg-writer.cc (write_enum_type_decl): New.
(write_decl): Add support to serialize enum_type_decl.
* tests/test-read-write.cc: De-serialize and serialize
data/test-read-write/test6.xml back.
* tests/data/test-read-write/test6.xml: New test input.
* tests/Makefile.am: Add it to the distribution.
* src/abg-ir.h (class reference_type_def, struct pointer_type_def)
(struct reference_type_def): New declaration.
(type_base_hash::operator(), type_decl_hash::operator())
(scope_type_decl_hash::operator())
(qualified_type_def_hash::operator()): Include the typeid name in
the hash.
* src/abg-ir.cc (reference_type_def::reference_type_def)
(reference_type_def::operator==)
(reference_type_def::get_pointed_to_type)
(reference_type_def::is_lvalue)
(reference_type_def::~reference_type_def): New definitions.
(dynamic_type_hash::operator): Hash pointer_type_def and
reference_type_def instances.
* src/abg-reader.cc (read_context::finish_decl_creation)
(read_context::finish_type_decl_creation)
(handle_reference_type_def): New definitions.
(read_file): Handle "reference-type-def" elements.
(handle_type_decl, handle_namespace_decl)
(handle_qualified_type_decl, handle_pointer_type_def): Use the new
read_context::finish_type_decl_creation or
read_context::finish_decl_creation.
* src/abg-writer.cc (write_reference_type_def): New definition.
(write_decl): Supporting writing a pointer to an instance of
reference_type_def.
* tests/data/test-read-write/test5.xml: New test file.
* tests/test-read-write.cc: (De)Serialize it.
* tests/Makefile.am: Add it to the build system.
* src/abg-ir.h (location::{operator==, operator<})
(decl_base::operator==, scope_decl::operator==)
(type_base::operator==, struct type_shared_ptr_equal)
(type_decl::operator==, scope_type::operator==)
(qualified_type_def::operator==, class pointer_type_def): New
declarations..
* src/abg-ir.cc (decl_base::operator==, scope_decl::operator==)
(type_base::operator==, type_decl::operator==)
(scope_type_decl::operator==, namespace_decl::operator==)
(qualified_type_def::operator==)
(pointer_type_def::pointer_type_def, pointer_type_def::operator==)
(pointer_type_def::get_pointed_to_type)
(pointer_type_def::~pointer_type_def): New definitions.
* src/abg-reader.cc (handle_pointer_type_def): New definition.
(read_input): Handle pointer-type-def
elements.
* src/abg-writer.cc (type_shared_ptr_map): Make this map use the
use type_shared_ptr_equal predicate.
(write_pointer_type_def): New definition.
(write_decl): Improve logic. Support serializing a pointer to
pointer_type_def.
* tests/data/test-read-write/test4.xml: New test input file.
* tests/Makefile.am: Add tests/data/test-read-write/test4.xml to
the build system.
* tests/test-read-write.cc: (De)serialize the new test file.
* src/abg-ir.h (struct type_base_hash, struct dynamic_type_hash)
(struct type_shared_ptr_hash, struct scope_type_decl_hash, class
qualified_type_def, struct qualified_type_def_hash): New.
(decl_base_hash::operator()): Constify. Don't crash if the scope
of the decl we are hashing is null.
(class type_decl): Add comment at the end.
(type_decl_hash::operator()): Constify. Reuse the new
type_base_hash hasher.
(class namespace_decl): Add comment.
* src/abg-ir.cc (qualified_type_def::qualified_type_def)
(qualified_type_def::~qualified_type_def)
(qualified_type_def::get_cv_quals)
(qualified_type_def::set_cv_quals)
(qualified_type_def::get_underlying_type)
(dynamic_type_hash::operator()): New function definitions.
* src/abg-reader.cc (handle_qualified_type_decl): New.
(read_file): Handle elements named "qualified-type-def".
(read::context::add_type_decl): Assert that
the type being associated to the unique ID is non-null.
(handle_type_decl): Fix this in the process; don't crash if some
attributes are not present. Associate the unique id present in
the xml document with the type we just parsed.
(handle_namespace_decl): Add some comments. Don't crash if the
name attribute is not present.
* src/abg-writer.cc (write_context::get_id_for_type)
(write_context::m_type_id_map, write_decl_location)
(write_qualified_type_def): New.
(write_decl): Handle instances of qualified_type_def.
(write_type_decl): Use the new write_decl_location and
write_context::get_id_for_type.
* tests/data/test-read-write/test0.xml: Update id format since we
are now using the new write_context::get_id_for_type to generate
it.
* tests/data/test-read-write/test1.xml: Likewise.
* tests/data/test-read-write/test2.xml: Likewise.
* tests/data/test-read-write/test3.xml: New test.
* tests/test-read-write.cc: Test De-serializing
tests/data/test-read-write/test3.xml and serializing it back.
Also don't bail out if we fail on one input.
* tests/Makefile.am: Add tests/data/test-read-write/test3.xml to the
distribution.
* src/abg-reader.cc (read_context::get_cur_scope): Remove useless
const overload. Don't make this rely on m_cur_scope. Rather, use
the path to the current decl (from the root element) to compute
the cur scope.
(read_context::m_cur_scope, read_context::set_cur_scope): Remove
these.
(update_read_context): Re-think logic.
* tests/data/test-read-write/test2.xml: Add new test input.
* tests/Makefile.am: Add data/test-read-write/test2.xml to the
distribution.
* tests/test-read-write.cc: Add data/test-read-write/test2.xml to
the harness.
* abg-ir.{h,cc} (decl_base::decl_base, scope_decl::scope_decl)
(type_decl::type_decl, namespace_decl::namespace_decl): Do not
append a decl to its context from within its constructor. It's
better doing that in a function that takes shared_ptrs to decl and
context. That way we avoid memory management havoc.
(decl_base::set_scope): New private function.
(scope_decl::add_member_decl): Make this private.
(add_decl_to_scope): New function, friend of decl_base and
scope_decl.
* abg-reader.cc (read_context::get_cur_scope): Add a non-const
overload.
(handle_type_decl, handle_namespace_decl): Use add_decl_to_scope.
Adjust to new type_decl and namespace_decl constructor signature.
* src/abg-writer.cc (write_type): Emit 'id', not 'xml:id'.
(write_namespace_decl): Emit "namespace-decl", not
"namespace-decl-name", as the name of namespace element.
* tests/Makefile.am (test0.xml): Rename input0.xml into this.
(test1.xml): New test input.
* tests/data/test-read-write/test0.xml: Update to use 'id' as id
attribute, rather than xml:id.
* tests/data/test-read-write/test1.xml: New test.
* test-read-write.cc (struct InOutSpec): New
(main): Reorganize to give a list of input files to read and to
write to an output file, have the test read the input files, write
them, and diff the two.
* src/abg-ir.cc (namespace_decl::~namespace_decl): Add this
missing virtual constructor definition.
* src/abg-reader.cc (read_context::{get_cur_decl,pop_decl}):
Return a null pointer when the decls stack is empty.
(update_read_context): Don't try to de-reference a NULL cur_decl.
(read_input): Don't try to poke at file validity here. What was I
thinking. Really test for advance_cursor to return 1, expressing
success.
* src/abg-reader.h (read_file): Fix style.
* Makefile.am: Add tests sub-directory.
* configure.ac: Build with debugging-friendly options if the
ABIGAIL_DEBUG env variable is set. Generate tests/Makefile.
* tests/Makefile.am: New file.
* tests/test-read-write.cc: Likewise.
* tests/test-utils.{h,cc}: Likewise.
* tests/data/test-read-write/input0.xml: Likewise.
