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* qapi: Add a 'coroutine' flag for commandsKevin Wolf2020-10-091-3/+4
| | | | | | | | | | | | | | | | This patch adds a new 'coroutine' flag to QMP command definitions that tells the QMP dispatcher that the command handler is safe to be run in a coroutine. The documentation of the new flag pretends that this flag is already used as intended, which it isn't yet after this patch. We'll implement this in another patch in this series. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201005155855.256490-9-kwolf@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: Add feature flags to struct membersMarkus Armbruster2020-03-171-3/+4
| | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20200317115459.31821-21-armbru@redhat.com>
* qapi: Consistently put @features parameter right after @ifcondMarkus Armbruster2020-03-171-5/+5
| | | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200317115459.31821-14-armbru@redhat.com>
* qapi: Add feature flags to remaining definitionsMarkus Armbruster2020-03-171-3/+6
| | | | | | | | | | | | | | | | | In v4.1.0, we added feature flags just to struct types (commit 6a8c0b5102^..f3ed93d545), to satisfy an immediate need (commit c9d4070991 "file-posix: Add dynamic-auto-read-only QAPI feature"). In v4.2.0, we added them to commands (commit 23394b4c39 "qapi: Add feature flags to commands") to satisfy another immediate need (commit d76744e65e "qapi: Allow introspecting fix for savevm's cooperation with blockdev"). Add them to the remaining definitions: enumeration types, union types, alternate types, and events. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200317115459.31821-13-armbru@redhat.com>
* qapi: Drop conditionals for Python 2Markus Armbruster2020-03-051-5/+1Star
| | | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200304155932.20452-3-armbru@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com>
* drop "from __future__ import print_function"Paolo Bonzini2020-02-071-1/+0Star
| | | | | | | | | | | | This is only needed for Python 2, which we do not support anymore. Cc: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Acked-by: Alex Bennée <alex.bennee@linaro.org> Acked-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20200204160604.19883-1-pbonzini@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
* tests: Explicit usage of Python 3Philippe Mathieu-Daudé2020-02-071-1/+1
| | | | | | | | | | | | | | | | | Use the program search path to find the Python 3 interpreter. Patch created mechanically by running: $ sed -i "s,^#\!/usr/bin/\(env\ \)\?python$,#\!/usr/bin/env python3," \ $(git grep -l 'if __name__.*__main__') Reported-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Suggested-by: Daniel P. Berrangé <berrange@redhat.com> Suggested-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20200130163232.10446-5-philmd@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
* tests/qapi-schema: Fix feature documentation testingMarkus Armbruster2019-10-291-0/+2
| | | | | | | | | Commit 8aa3a33e44 "tests/qapi-schema: Test for good feature lists in structs" made test-qapi.py show features, but neglected to show their documentation. Fix that. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-5-armbru@redhat.com>
* tests: qapi: Test 'features' of commandsPeter Krempa2019-10-221-4/+9
| | | | | | | Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191018081454.21369-4-armbru@redhat.com>
* qapi: Add feature flags to commandsPeter Krempa2019-10-221-1/+2
| | | | | | | | | | | | | | Similarly to features for struct types introduce the feature flags also for commands. This will allow notifying management layers of fixes and compatible changes in the behaviour of a command which may not be detectable any other way. The changes were heavily inspired by commit 6a8c0b51025. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191018081454.21369-3-armbru@redhat.com>
* tests/qapi-schema: Tidy up test output indentationMarkus Armbruster2019-10-221-2/+2
| | | | | | | | | Command and event details are indented three spaces, everything else four. Messed up in commit 156402e5042. Use four spaces consistently. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com> Message-Id: <20191018081454.21369-2-armbru@redhat.com>
* qapi: Split up scripts/qapi/common.pyMarkus Armbruster2019-10-221-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The QAPI code generator clocks in at some 3100 SLOC in 8 source files. Almost 60% of the code is in qapi/common.py. Split it into more focused modules: * Move QAPISchemaPragma and QAPISourceInfo to qapi/source.py. * Move QAPIError and its sub-classes to qapi/error.py. * Move QAPISchemaParser and QAPIDoc to parser.py. Use the opportunity to put QAPISchemaParser first. * Move check_expr() & friends to qapi/expr.py. Use the opportunity to put the code into a more sensible order. * Move QAPISchema & friends to qapi/schema.py * Move QAPIGen and its sub-classes, ifcontext, QAPISchemaModularCVisitor, and QAPISchemaModularCVisitor to qapi/gen.py * Delete camel_case(), it's unused since commit e98859a9b9 "qapi: Clean up after recent conversions to QAPISchemaVisitor" A number of helper functions remain in qapi/common.py. I considered moving the code generator helpers to qapi/gen.py, but decided not to. Perhaps we should rewrite them as methods of QAPIGen some day. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20191018074345.24034-7-armbru@redhat.com> [Add "# -*- coding: utf-8 -*-" lines]
* qapi: Speed up frontend testsMarkus Armbruster2019-10-221-17/+106
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "make check-qapi-schema" takes around 10s user + system time for me. With -j, it takes a bit over 3s real time. We have worse tests. It's still annoying when you work on the QAPI generator. Some 1.4s user + system time is consumed by make figuring out what to do, measured by making a target that does nothing. There's nothing I can do about that right now. But let's see what we can do about the other 8s. Almost 7s are spent running test-qapi.py for every test case, the rest normalizing and diffing test-qapi.py output. We have 190 test cases. If I downgrade to python2, it's 4.5s, but python2 is a goner. Hacking up test-qapi.py to exit(0) without doing anything makes it only marginally faster. The problem is Python startup overhead. Our configure puts -B into $(PYTHON). Running without -B is faster: 4.4s. We could improve the Makefile to run test cases only when the test case or the generator changed. But I'm after improvement in the case where the generator changed. test-qapi.py is designed to be the simplest possible building block for a shell script to do the complete job (it's actually a Makefile, not a shell script; no real difference). Python is just not meant for that. It's for bigger blocks. Move the post-processing and diffing into test-qapi.py, and make it capable of testing multiple schema files. Set executable bits while there. Running it once per test case now takes slightly longer than 8s. But running it once for all of them takes under 0.2s. Messing with the Makefile to run it only on the tests that need retesting is clearly not worth the bother. Expected error output changes because the new normalization strips off $(SRCDIR)/tests/qapi-schema/ instead of just $(SRCDIR)/. The .exit files go away, because there is no exit status to test anymore. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20191018074345.24034-5-armbru@redhat.com>
* tests/qapi-schema: Test for good feature lists in structsKevin Wolf2019-06-121-0/+4
| | | | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20190606153803.5278-3-armbru@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: Add feature flags to struct typesKevin Wolf2019-06-121-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometimes, the behaviour of QEMU changes without a change in the QMP syntax (usually by allowing values or operations that previously resulted in an error). QMP clients may still need to know whether they can rely on the changed behavior. Let's add feature flags to the QAPI schema language, so that we can make such changes visible with schema introspection. An example for a schema definition using feature flags looks like this: { 'struct': 'TestType', 'data': { 'number': 'int' }, 'features': [ 'allow-negative-numbers' ] } Introspection information then looks like this: { "name": "TestType", "meta-type": "object", "members": [ { "name": "number", "type": "int" } ], "features": [ "allow-negative-numbers" ] } This patch implements feature flags only for struct types. We'll implement them more widely as needed. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20190606153803.5278-2-armbru@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* tests/qapi-schema: Make test-qapi.py print arraysMarkus Armbruster2019-03-051-0/+6
| | | | | | | | | | The next few commits mess with array types, and having the changes exposed in output of test-qapi.py will be useful. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190301154051.23317-2-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [Rationale added to commit message]
* qapi: add 'if' to union membersMarc-André Lureau2018-12-131-0/+1
| | | | | | | | | | | | | | | Add 'if' key to union members: { 'union': 'TestIfUnion', 'data': 'mem': { 'type': 'str', 'if': 'COND'} } The generated code remains unconditional for now. Later patches generate the conditionals. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20181213123724.4866-16-marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: Add 'if' to implicit struct membersMarc-André Lureau2018-12-131-0/+1
| | | | | | | | | | | | | | The generated code is for now *unconditional*. Later patches generate the conditionals. Note that union discriminators may not have 'if' conditionals. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20181213123724.4866-14-marcandre.lureau@redhat.com> Message-Id: <20181213123724.4866-15-marcandre.lureau@redhat.com> [Patches squashed, commit message tweaked] Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: add 'if' to enum membersMarc-André Lureau2018-12-131-0/+1
| | | | | | | | | | | | | | | QAPISchemaMember gains .ifcond for enum members: inherited classes, such as QAPISchemaObjectTypeMember, will thus have an ifcond member after this (those different types will also use the .ifcond to store the condition and generate conditional code in the following patches). The generated code remains unconditional for now. Later patches generate the conditionals. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20181213123724.4866-10-marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* tests: print enum type members more like object type membersMarc-André Lureau2018-12-131-1/+3
| | | | | | | | | | | | | Commit 93bda4dd461 changed the internal representation of enum type members from str to QAPISchemaMember, but we still print only a string. Has been good enough, as the name is the member's only attribute of interest, but that's about to change. To prepare, print them more like object type members. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20181213123724.4866-4-marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: change enum visitor and gen_enum* to take QAPISchemaMemberMarc-André Lureau2018-12-131-2/+2
| | | | | | | | | | | | | | This will allow to add and access more properties associated with enum values/members, like the associated 'if' condition. We may want to have a specialized type QAPISchemaEnumMember, for now this will do. Modify gen_enum() and gen_enum_lookup() for the same reason. Suggested-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20181213123724.4866-3-marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: Fix some pycodestyle-3 complaintsMarkus Armbruster2018-08-151-6/+7
| | | | | | | | | | | | | | | | | | Fix the following issues: common.py:873:13: E129 visually indented line with same indent as next logical line common.py:1766:5: E741 ambiguous variable name 'l' common.py:1784:1: E305 expected 2 blank lines after class or function definition, found 1 common.py:1833:1: E305 expected 2 blank lines after class or function definition, found 1 common.py:1843:1: E305 expected 2 blank lines after class or function definition, found 1 visit.py:181:18: E127 continuation line over-indented for visual indent Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180621083551.775-1-armbru@redhat.com> [Fixup squashed in:] Message-ID: <871sd0nzw9.fsf@dusky.pond.sub.org> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
* qapi: add 'ifcond' to visitor methodsMarc-André Lureau2018-07-031-5/+15
| | | | | | | | | | Modify the test visitor to check correct passing of values. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180703155648.11933-5-marcandre.lureau@redhat.com> [Accidental change to roms/seabios dropped] Signed-off-by: Markus Armbruster <armbru@redhat.com>
* tests: qapi-schema tests for allow-preconfigIgor Mammedov2018-05-301-2/+2
| | | | | | | | | | use new allow-preconfig parameter in tests and make sure that the QAPISchema can parse allow-preconfig correctly Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1526058959-41425-1-git-send-email-imammedo@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
* qapi: introduce new cmd option "allow-preconfig"Igor Mammedov2018-05-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New option will be used to allow commands, which are prepared/need to run, during preconfig state. Other commands that should be able to run in preconfig state, should be amended to not expect machine in initialized state or deal with it. For compatibility reasons, commands that don't use new flag 'allow-preconfig' explicitly are not permitted to run in preconfig state but allowed in all other states like they used to be. Within this patch allow following commands in preconfig state: qmp_capabilities query-qmp-schema query-commands query-command-line-options query-status exit-preconfig to allow qmp connection, basic introspection and moving to the next state. PS: set-numa-node and query-hotpluggable-cpus will be enabled later in a separate patches. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Message-Id: <1526057503-39287-1-git-send-email-imammedo@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [ehabkost: Changed "since 2.13" to "since 3.0"] Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
* tests: let qapi-schema tests detect oobPeter Xu2018-03-271-2/+2
| | | | | | | | | | | | The allow_oob parameter was passed in but not used in tests. Now reflect that in the tests, so we need to touch up other command testers with that new change. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20180326063901.27425-6-peterx@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com>
* qapi: introduce new cmd option "allow-oob"Peter Xu2018-03-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here "oob" stands for "Out-Of-Band". When "allow-oob" is set, it means the command allows out-of-band execution. The "oob" idea is proposed by Markus Armbruster in following thread: https://lists.gnu.org/archive/html/qemu-devel/2017-09/msg02057.html This new "allow-oob" boolean will be exposed by "query-qmp-schema" as well for command entries, so that QMP clients can know which commands can be used in out-of-band calls. For example the command "migrate" originally looks like: {"name": "migrate", "ret-type": "17", "meta-type": "command", "arg-type": "86"} And it'll be changed into: {"name": "migrate", "ret-type": "17", "allow-oob": false, "meta-type": "command", "arg-type": "86"} This patch only provides the QMP interface level changes. It does not contain the real out-of-band execution implementation yet. Suggested-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20180309090006.10018-18-peterx@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [eblake: rebase on introspection done by qlit] Signed-off-by: Eric Blake <eblake@redhat.com>
* qapi: Record 'include' directives in intermediate representationMarkus Armbruster2018-03-021-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | The include directive permits modular QAPI schemata, but the generated code is monolithic all the same. To permit generating modular code, the front end needs to pass more information on inclusions to the back ends. The commit before last added the necessary information to the parse tree. This commit adds it to the intermediate representation and its QAPISchemaVisitor. A later commit will use this to to generate modular code. New entity QAPISchemaInclude represents inclusions. Call new visitor method visit_include() for it, so visitors can see the sub-modules a module includes. Note that unlike other entities, QAPISchemaInclude has no name, and is therefore not added to entity_dict. New QAPISchemaEntity attribute @module names the entity's source file. Call new visitor method visit_module() when it changes during a visit, so visitors can keep track of the module being visited. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20180211093607.27351-18-armbru@redhat.com> [eblake: avoid accidental deletion of self._predefining] Signed-off-by: Eric Blake <eblake@redhat.com>
* qapi: Lift error reporting from QAPISchema.__init__() to callersMarkus Armbruster2018-03-021-2/+8
| | | | | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20180211093607.27351-14-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Eric Blake <eblake@redhat.com>
* qapi-gen: New common driver for code and doc generatorsMarkus Armbruster2018-03-021-3/+1Star
| | | | | | | | | | | | | | | | | | | | | Whenever qapi-schema.json changes, we run six programs eleven times to update eleven files. Similar for qga/qapi-schema.json. This is silly. Replace the six programs by a single program that spits out all eleven files. The programs become modules in new Python package qapi, along with the helper library. This requires moving them to scripts/qapi/. While moving them, consistently drop executable mode bits. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20180211093607.27351-9-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> [eblake: move change to one-line 'blurb' earlier in series, mention mode bit change as intentional, update qapi-code-gen.txt to match actual generated events.c file] Signed-off-by: Eric Blake <eblake@redhat.com>
* qapi: use items()/values() intead of iteritems()/itervalues()Daniel P. Berrange2018-02-051-1/+1
| | | | | | | | | | | | | The iteritems()/itervalues() methods are gone in py3, but the items()/values() methods are still around. The latter are less efficient than the former in py2, but this has unmeasurably small impact on QEMU build time, so taking portability over efficiency is a net win. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <20180116134217.8725-3-berrange@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
* qapi: convert to use python print function instead of statementDaniel P. Berrange2018-02-051-20/+21
| | | | | | | | | | | | | Python 3 no longer supports the bare "print" statement, it must be called as a normal function with round brackets. It is possible to opt-in to this new syntax with Python 2.6 onwards by importing the "print_function" from the "__future__" module, making it easy to support Python 2 and 3 in parallel. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <20180116134217.8725-2-berrange@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
* qapi: Simplify representation of QAPIDoc section textMarkus Armbruster2017-12-201-3/+3
| | | | | | | | | | | Use a string instead of a list of strings. This makes qapi2texi.py generate additional blank lines. They're harmless, and the next commit will get rid of them again. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20171002141341.24616-9-armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
* tests/qapi-schema: Make test-qapi.py print docs againMarkus Armbruster2017-03-211-0/+11
| | | | | | | | | | | test-qapi.py used to print the internal representation of doc comments (commit 3313b61). This went away when we dropped the doc comments in positive tests (commit 87c16dc). Bring it back, because I'm going to add real positive doc comment tests. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1490015515-25851-5-git-send-email-armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
* qapi: Back out doc comments added just to please qapi.pyMarkus Armbruster2017-03-161-14/+0Star
| | | | | | | | | | | | | | | This reverts commit 3313b61's changes to tests/qapi-schema/, except for tests/qapi-schema/doc-*. We could keep some of these doc comments to serve as positive test cases. However, they don't actually add to what we get from doc comment use in actual schemas, as we we don't test output matches expectations, and don't systematically cover doc comment features. Proper positive test coverage would be nice. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1489582656-31133-4-git-send-email-armbru@redhat.com>
* qapi: add qapi2texi scriptMarc-André Lureau2017-01-161-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As the name suggests, the qapi2texi script converts JSON QAPI description into a texi file suitable for different target formats (info/man/txt/pdf/html...). It parses the following kind of blocks: Free-form: ## # = Section # == Subsection # # Some text foo with *emphasis* # 1. with a list # 2. like that # # And some code: # | $ echo foo # | -> do this # | <- get that # ## Symbol description: ## # @symbol: # # Symbol body ditto ergo sum. Foo bar # baz ding. # # @param1: the frob to frobnicate # @param2: #optional how hard to frobnicate # # Returns: the frobnicated frob. # If frob isn't frobnicatable, GenericError. # # Since: version # Notes: notes, comments can have # - itemized list # - like this # # Example: # # -> { "execute": "quit" } # <- { "return": {} } # ## That's roughly following the following EBNF grammar: api_comment = "##\n" comment "##\n" comment = freeform_comment | symbol_comment freeform_comment = { "# " text "\n" | "#\n" } symbol_comment = "# @" name ":\n" { member | tag_section | freeform_comment } member = "# @" name ':' [ text ] "\n" freeform_comment tag_section = "# " ( "Returns:", "Since:", "Note:", "Notes:", "Example:", "Examples:" ) [ text ] "\n" freeform_comment text = free text with markup Note that the grammar is ambiguous: a line "# @foo:\n" can be parsed both as freeform_comment and as symbol_comment. The actual parser recognizes symbol_comment. See docs/qapi-code-gen.txt for more details. Deficiencies and limitations: - the generated QMP documentation includes internal types - union type support is lacking - type information is lacking in generated documentation - doc comment error message positions are imprecise, they point to the beginning of the comment. - a few minor issues, all marked TODO/FIXME in the code Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20170113144135.5150-16-marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [test-qapi.py tweaked to avoid trailing empty lines in .out] Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: Plumb in 'boxed' to qapi generator lower levelsEric Blake2016-07-191-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The next patch will add support for passing a qapi union type as the 'data' of a command. But to do that, the user function for implementing the command, as called by the generated marshal command, must take the corresponding C struct as a single boxed pointer, rather than a breakdown into one parameter per member. Even without a union, being able to use a C struct rather than a list of parameters can make it much easier to handle coding with QAPI. This patch adds the internal plumbing of a 'boxed' flag associated with each command and event. In several cases, this means adding indentation, with one new dead branch and the remaining branch being the original code more deeply nested; this was done so that the new implementation in the next patch is easier to review without also being mixed with indentation changes. For this patch, no behavior or generated output changes, other than the testsuite outputting the value of the new flag (always False for now). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1468468228-27827-9-git-send-email-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Identifier box renamed to boxed in two places] Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: Hide tag_name data member of variantsEric Blake2016-07-191-2/+1Star
| | | | | | | | | | | | | | Clean up the only remaining external use of the tag_name field of QAPISchemaObjectTypeVariants, by explicitly listing the generated 'type' tag for all variants in the testsuite (you can still tell simple unions by the -wrapper types). Then we can mark the tag_name field as private by adding a leading underscore to prevent any further use. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1468468228-27827-5-git-send-email-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* tests/qapi-schema: Convert test harness to QAPISchemaVisitorMarkus Armbruster2015-09-211-8/+39
| | | | | | | | | | | | | | The old code prints the result of parsing (list of expression dictionaries), and partial results of semantic analysis (list of enum dictionaries, list of struct dictionaries). The new code prints a trace of a schema visit, i.e. what the back-ends are going to use. Built-in and array types are omitted, because they're boring. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* qapi: New QAPISchema intermediate reperesentationMarkus Armbruster2015-09-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The QAPI code generators work with a syntax tree (nested dictionaries) plus a few symbol tables (also dictionaries) on the side. They have clearly outgrown these simple data structures. There's lots of rummaging around in dictionaries, and information is recomputed on the fly. For the work I'm going to do, I want more clearly defined and more convenient interfaces. Going forward, I also want less coupling between the back-ends and the syntax tree, to make messing with the syntax easier. Create a bunch of classes to represent QAPI schemata. Have the QAPISchema initializer call the parser, then walk the syntax tree to create the new internal representation, and finally perform semantic analysis. Shortcut: the semantic analysis still relies on existing check_exprs() to do the actual semantic checking. All this code needs to move into the classes. Mark as TODO. Simple unions are lowered to flat unions. Flat unions and structs are represented as a more general object type. Catching name collisions in generated code would be nice. Mark as TODO. We generate array types eagerly, even though most of them aren't used. Mark as TODO. Nothing uses the new intermediate representation just yet, thus no change to generated files. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* qapi: Use an explicit input fileLluís Vilanova2014-05-081-1/+2
| | | | | | | | | | | | Use an explicit input file on the command-line instead of reading from standard input. It also outputs the proper file name when there's an error. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* qapi: [trivial] Do not catch unknown exceptions in "test-qapi.py"Lluís Vilanova2014-05-081-3/+0Star
| | | | | | | Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
* qapi.py: Decent syntax error reportingMarkus Armbruster2013-07-291-0/+2
| | | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1374939721-7876-5-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* tests: QAPI schema parser testsMarkus Armbruster2013-07-291-0/+25
The parser handles erroneous input badly. To be improved shortly. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-id: 1374939721-7876-2-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>