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2019-10-30Merge remote-tracking branch ↵Peter Maydell
'remotes/stsquad/tags/pull-tcg-plugins-281019-4' into staging TCG Plugins initial implementation - use --enable-plugins @ configure - low impact introspection (-plugin empty.so to measure overhead) - plugins cannot alter guest state - example plugins included in source tree (tests/plugins) - -d plugin to enable plugin output in logs - check-tcg runs extra tests when plugins enabled - documentation in docs/devel/plugins.rst # gpg: Signature made Mon 28 Oct 2019 15:13:23 GMT # gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44 # gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full] # Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44 * remotes/stsquad/tags/pull-tcg-plugins-281019-4: (57 commits) travis.yml: enable linux-gcc-debug-tcg cache MAINTAINERS: add me for the TCG plugins code scripts/checkpatch.pl: don't complain about (foo, /* empty */) .travis.yml: add --enable-plugins tests include/exec: wrap cpu_ldst.h in CONFIG_TCG accel/stubs: reduce headers from tcg-stub tests/plugin: add hotpages to analyse memory access patterns tests/plugin: add instruction execution breakdown tests/plugin: add a hotblocks plugin tests/tcg: enable plugin testing tests/tcg: drop test-i386-fprem from TESTS when not SLOW tests/tcg: move "virtual" tests to EXTRA_TESTS tests/tcg: set QEMU_OPTS for all cris runs tests/tcg/Makefile.target: fix path to config-host.mak tests/plugin: add sample plugins linux-user: support -plugin option vl: support -plugin option plugin: add qemu_plugin_outs helper plugin: add qemu_plugin_insn_disas helper plugin: expand the plugin_init function to include an info block ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-10-29qapi: Check feature documentation against the schemaMarkus Armbruster
Commit f3ed93d545 "qapi: Allow documentation for features" neglected to check documentation against the schema. Fix that: check them the same way we check arguments. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-20-armbru@redhat.com>
2019-10-29qapi: Polish reporting of bogus member documentationMarkus Armbruster
Improve error messages from the following documented members are not in the declaration: a the following documented members are not in the declaration: aa, bb to the more concise documented member 'a' does not exist documented members 'aa', 'bb' do not exist Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-19-armbru@redhat.com>
2019-10-29qapi: Lift features into QAPISchemaEntityMarkus Armbruster
Commit 6a8c0b5102 "qapi: Add feature flags to struct types" added features to QAPISchemaObjectType. Commit a95daa5093 "qapi: Add feature flags to commands in qapi" added them to QAPISchemaCommand, duplicating the code. Tolerable, but the duplication will only get worse as we add features to more definitions. To de-duplicate, lift features from QAPISchemaObjectType and QAPISchemaCommand into QAPISchemaEntity. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-18-armbru@redhat.com>
2019-10-29qapi: Fold normalize_enum() into check_enum()Markus Armbruster
check_features() is always called together with normalize_features(). Fold the latter into the former. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-17-armbru@redhat.com>
2019-10-29qapi: Fold normalize_features() into check_features()Markus Armbruster
check_features() is always called together with normalize_features(): the former in check_struct() and check_command(), the latter in their caller check_exprs(). Fold the latter into the former. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-16-armbru@redhat.com>
2019-10-29qapi: Fold normalize_if() into check_if()Markus Armbruster
check_if() is always called together with normalize_if(). Fold the latter into the former. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-15-armbru@redhat.com>
2019-10-29qapi: Eliminate .check_doc() overridesMarkus Armbruster
All sub-classes of QAPISchemaEntity now override .check_doc() the same way, except for QAPISchemaType and and QAPISchemaArrayType. Put the overrides' code in QAPISchemaEntity.check_doc(), and drop the overrides. QAPISchemaType doesn't care because it's abstract. QAPISchemaArrayType doesn't care because its .doc is always None. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-14-armbru@redhat.com>
2019-10-29qapi: Simplify ._make_implicit_object_type()Markus Armbruster
All callers now pass doc=None. Drop the argument. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-13-armbru@redhat.com>
2019-10-29qapi: Fix doc comment checking for commands and eventsMarkus Armbruster
When a command's 'data' is an object, its doc comment describes the arguments defined there. When 'data' names a type, the doc comment does not describe arguments. Instead, the doc generator inserts a pointer to the named type. An event's doc comment works the same. We don't actually check doc comments for commands and events. Instead, QAPISchema._def_command() forwards the doc comment to the implicit argument type, where it gets checked. Works because the check only cares for the implicit argument type's members. Not only is this needlessly hard to understand, it actually falls apart in two cases: * When 'data' is empty, there is nothing to forward to, and the doc comment remains unchecked. Demonstrated by test doc-bad-event-arg. * When 'data' names a type, we can't forward, as the type has its own doc comment. The command or event's doc comment remains unchecked. Demonstrated by test doc-bad-boxed-command-arg. The forwarding goes back to commit 069fb5b250 "qapi: Prepare for requiring more complete documentation", put to use in commit 816a57cd6e "qapi: Fix detection of bogus member documentation". That fix was incomplete. To fix this, make QAPISchemaCommand and QAPISchemaEvent check doc comments, and drop the forwarding of doc comments to implicit argument types. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-12-armbru@redhat.com>
2019-10-29qapi: Clean up doc comment checking for implicit union baseMarkus Armbruster
An object type's doc comment describes the type's members, less the ones defined in a named base type. Cases: * Struct: the members are defined in 'data' and inherited from 'base'. Since the base type cannot be implicit, the doc comment describes just 'data'. * Simple union: the only member is the implicit tag member @type, and the doc comment describes it. * Flat union with implicit base type: the members are defined in 'base', and the doc comment describes it. * Flat union with named base type: the members are inherited from 'base'. The doc comment describes no members. Before we can check a doc comment with .check_doc(), we need .connect_doc() connect each of its "argument sections" to the member it documents. For structs and simple unions, this is straightforward: the members in question are in .local_members, and .connect_doc() connects them. For flat unions with a named base type, it's trivial: .local_members is empty, and .connect_doc() does nothing. For flat unions with an implicit base type, it's tricky. We have QAPISchema._make_implicit_object_type() forward the union's doc comment to the implicit base type, so that the base type's .connect_doc() connects the members. The union's .connect_doc() does nothing, as .local_members is empty. Dirt effect: we check the doc comment twice, once for the union type, and once for the implicit base type. This is needlessly brittle and hard to understand. Clean up as follows. Make the union's .connect_doc() connect an implicit base's members itself. Do not forward the union's doc comment to its implicit base type. Requires extending .connect_doc() so it can work with a doc comment other than self.doc. Add an optional argument for that. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-11-armbru@redhat.com>
2019-10-29qapi: Fix enum doc comment checkingMarkus Armbruster
Enumeration type documentation comments are not checked, as demonstrated by test doc-bad-enum-member. This is because we neglect to call self.doc.check() for enumeration types. Messed up in 816a57cd6e "qapi: Fix detection of bogus member documentation". Fix it. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-10-armbru@redhat.com>
2019-10-29qapi: Split .connect_doc(), .check_doc() off .check()Markus Armbruster
Splitting documentation checking off the .check() methods makes them a bit more focused, which is welcome, as some of them are pretty big. It also prepares the ground for the following commits. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-9-armbru@redhat.com>
2019-10-29qapi: De-duplicate entity documentation generation codeMarkus Armbruster
QAPISchemaGenDocVisitor.visit_command() duplicates texi_entity() for its boxed arguments case. The previous commit added another copy in .visit_event(). Replace texi_entity() by texi_type() and texi_msg(). Use texi_msg() for the boxed arguments case as well. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-8-armbru@redhat.com>
2019-10-29qapi: Implement boxed event argument documentationMarkus Armbruster
Generate a reference "Arguments: the members of ...", just like we do for commands since commit c2dd311cb7 "qapi2texi: Implement boxed argument documentation". No change to generated QMP documentation; we don't yet use boxed events outside tests/. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20191024110237.30963-7-armbru@redhat.com>
2019-10-28scripts/checkpatch.pl: don't complain about (foo, /* empty */)Alex Bennée
It's quite common to have a mini comment inside braces to acknowledge we know it's empty. Expand the inline detection to allow closing braces before the end of line. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Aaron Lindsay <aaron@os.amperecomputing.com>
2019-10-28trace: add mmu_index to mem_infoAlex Bennée
We are going to re-use mem_info later for plugins and will need to track the mmu_idx for softmmu code. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-10-26Merge commit 'df84f17' into HEADPaolo Bonzini
This merge fixes a semantic conflict with the trivial tree. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-23checkpatch: suggest qemu_real_host_page_size instead of getpagesize() or ↵Wei Yang
sysconf(_SC_PAGESIZE) Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> CC: Richard Henderson <richard.henderson@linaro.org> CC: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20191017004633.13229-1-richardw.yang@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-10-22qapi: Add feature flags to commandsPeter Krempa
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>
2019-10-22qapi: Clear scripts/qapi/doc.py executable bits againMarkus Armbruster
Commit fbf09a2fa4 "qapi: add 'ifcond' to visitor methods" brought back the executable bits. Fix that. Drop the #! line for good measure. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20191018074345.24034-8-armbru@redhat.com>
2019-10-22qapi: Split up scripts/qapi/common.pyMarkus Armbruster
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]
2019-10-22qapi: Move gen_enum(), gen_enum_lookup() back to qapi/types.pyMarkus Armbruster
The next commit will split up qapi/common.py. gen_enum() needs QAPISchemaEnumMember, and that's in the way. Move it to qapi/types.py along with its buddy gen_enum_lookup(). Permit me a short a digression on history: how did gen_enum() end up in qapi/common.py? Commit 21cd70dfc1 "qapi script: add event support" duplicated qapi-types.py's gen_enum() and gen_enum_lookup() in qapi-event.py. Simply importing them would have been cleaner, but wasn't possible as qapi-types.py was a program, not a module. Commit efd2eaa6c2 "qapi: De-duplicate enum code generation" de-duplicated by moving them to qapi.py, which was a module. Since then, program qapi-types.py has morphed into module types.py. It's where gen_enum() and gen_enum_lookup() started, and where they belong. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20191018074345.24034-6-armbru@redhat.com>
2019-10-22qapi: Eliminate accidental global frontend stateMarkus Armbruster
The frontend can't be run more than once due to its global state. A future commit will want to do that. The only global frontend state remaining is accidental: QAPISchemaParser.__init__()'s parameter previously_included=[]. Python evaluates the default once, at definition time. Any modifications to it are visible in subsequent calls. Well-known Python trap. Change the default to None and replace it by the real default in the function body. Use the opportunity to convert previously_included to a set. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20191018074345.24034-4-armbru@redhat.com>
2019-10-22qapi: Store pragma state in QAPISourceInfo, not global stateMarkus Armbruster
The frontend can't be run more than once due to its global state. A future commit will want to do that. Recent commit "qapi: Move context-sensitive checking to the proper place" got rid of many global variables already, but pragma state is still stored in global variables (that's why a pragma directive's scope is the complete schema). Move the pragma state to QAPISourceInfo. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20191018074345.24034-3-armbru@redhat.com>
2019-10-22qapi: Don't suppress doc generation without pragma doc-requiredMarkus Armbruster
Commit bc52d03ff5 "qapi: Make doc comments optional where we don't need them" made scripts/qapi2texi.py fail[*] unless the schema had pragma 'doc-required': true. The stated reason was inability to cope with incomplete documentation. When commit fb0bc835e5 "qapi-gen: New common driver for code and doc generators" folded scripts/qapi2texi.py into scripts/qapi-gen.py, it turned the failure into silent suppression. The doc generator can cope with incomplete documentation now. I don't know since when, or what the problem was, or even whether it ever existed. Drop the silent suppression. [*] The fail part was broken, fixed in commit e8ba07ea9a. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20191018074345.24034-2-armbru@redhat.com>
2019-10-15trace: avoid "is" with a literal Python 3.8 warningsStefan Hajnoczi
The following statement produces a SyntaxWarning with Python 3.8: if len(format) is 0: scripts/tracetool/__init__.py:459: SyntaxWarning: "is" with a literal. Did you mean "=="? Use the conventional len(x) == 0 syntax instead. Reported-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20191010122154.10553-1-stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-10-07make-release: pull in edk2 submodules so we can build it from tarballsMichael Roth
The `make efi` target added by 536d2173 is built from the roms/edk2 submodule, which in turn relies on additional submodules nested under roms/edk2. The make-release script currently only pulls in top-level submodules, so these nested submodules are missing in the resulting tarball. We could try to address this situation more generally by recursively pulling in all submodules, but this doesn't necessarily ensure the end-result will build properly (this case also required other changes). Additionally, due to the nature of submodules, we may not always have control over how these sorts of things are dealt with, so for now we continue to handle it on a case-by-case in the make-release script. Cc: Laszlo Ersek <lersek@redhat.com> Cc: Bruce Rogers <brogers@suse.com> Cc: qemu-stable@nongnu.org # v4.1.0 Reported-by: Bruce Rogers <brogers@suse.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com> Message-Id: <20190912231202.12327-2-mdroth@linux.vnet.ibm.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-10-04vmxcap: correct the name of the variablesPaolo Bonzini
The low bits are 1 if the control must be one, the high bits are 1 if the control can be one. Correct the variable names as they are very confusing. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-09-28qapi: Improve source file read error handlingMarkus Armbruster
qapi-gen.py crashes when it can't open the main schema file, and when it can't read from any schema file. Lazy. Change QAPISchema.__init__() to take a file name instead of a file object. Move the open code from _include() to __init__(), so it's used for the main schema file, too. Move the read into the try for good measure, and rephrase the error message. Reporting open or read failure for the main schema file needs a QAPISourceInfo representing "no source". Make QAPISourceInfo cope with fname=None. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-27-armbru@redhat.com>
2019-09-28qapi: Improve reporting of redefinitionMarkus Armbruster
Point to the previous definition, unless it's a built-in. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-26-armbru@redhat.com>
2019-09-28qapi: Improve reporting of missing documentation commentMarkus Armbruster
Have check_exprs() check this later, so the error message gains an "in definition line". Tweak the error message. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-25-armbru@redhat.com>
2019-09-28qapi: Eliminate check_keys(), rename check_known_keys()Markus Armbruster
check_keys() has become a trivial wrapper for check_known_keys(). Eliminate it. This makes its name available. Rename check_known_keys(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-24-armbru@redhat.com>
2019-09-28qapi: Improve reporting of invalid 'if' furtherMarkus Armbruster
check_if()'s errors don't point to the offending part of the expression. For instance: tests/qapi-schema/alternate-branch-if-invalid.json:2: 'if' condition ' ' makes no sense Other check_FOO() do, with the help of a @source argument. Make check_if() do that, too. The example above improves to: tests/qapi-schema/alternate-branch-if-invalid.json:2: 'if' condition ' ' of 'data' member 'branch' makes no sense Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190927134639.4284-23-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2019-09-28qapi: Avoid redundant definition references in error messagesMarkus Armbruster
Many error messages refer to the offending definition even though they're preceded by an "in definition" line. Rephrase them. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190927134639.4284-22-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2019-09-28qapi: Improve reporting of missing / unknown definition keysMarkus Armbruster
Have check_exprs() call check_keys() later, so its error messages gain an "in definition" line. Both check_keys() and check_name_is_str() check the definition's name is a string. Since check_keys() now runs after check_name_is_str() rather than before, its check is dead. Bury it. Checking values in check_keys() is unclean anyway. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-21-armbru@redhat.com>
2019-09-28qapi: Improve reporting of invalid flagsMarkus Armbruster
Split check_flags() off check_keys() and have check_exprs() call it later, so its error messages gain an "in definition" line. Tweak the error messages. Checking values in a function named check_keys() is unclean anyway. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-20-armbru@redhat.com>
2019-09-28qapi: Improve reporting of invalid 'if' errorsMarkus Armbruster
Move check_if() from check_keys() to check_exprs() and call it later, so its error messages gain an "in definition" line. Checking values in a function named check_keys() is unclean anyway. The original sin was commit 0545f6b887 "qapi: Better error messages for bad expressions", which checks the value of key 'name'. More sinning in commit 2cbf09925a "qapi: More rigorous checking for type safety bypass", commit c818408e44 "qapi: Implement boxed types for commands/events", and commit 967c885108 "qapi: add 'if' to top-level expressions". This commit does penance for the latter. The next commits will do penance for the others. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-19-armbru@redhat.com>
2019-09-28qapi: Move context-free checking to the proper placeMarkus Armbruster
QAPISchemaCommand.check() and QAPISchemaEvent().check() check 'data' is present when 'boxed': true. That's context-free. Move to check_command() and check_event(). Tweak the error message while there. check_exprs() & friends now check exactly what qapi-code-gen.txt calls the second layer of syntax. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-18-armbru@redhat.com>
2019-09-28qapi: Move context-sensitive checking to the proper placeMarkus Armbruster
When we introduced the QAPISchema intermediate representation (commit ac88219a6c7), we took a shortcut: we left check_exprs() & friends alone instead of moving semantic checks into the QAPISchemaFOO.check(). The .check() assert check_exprs() did its job. Time to finish the conversion job. Move exactly the context-sensitive checks to the .check(). They replace assertions there. Context-free checks stay put. Fixes the misleading optional tag error demonstrated by test flat-union-optional-discriminator. A few other error message improve. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-17-armbru@redhat.com>
2019-09-28qapi: Inline check_name() into check_union()Markus Armbruster
check_name() consists of check_name_is_str() and check_name_str(). check_union() relies on the latter to catch optional discriminators. The next commit will replace that by a more straightforward check. Inlining check_name() into check_union() now should make that easier to review. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-16-armbru@redhat.com>
2019-09-28qapi: Plumb info to the QAPISchemaMemberMarkus Armbruster
Future commits will need info in the .check() methods of QAPISchemaMember and its descendants. Get it there. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-15-armbru@redhat.com>
2019-09-28qapi: Make check_type()'s array case a bit more obviousMarkus Armbruster
check_type() checks the array's contents, then peels off the array and falls through to the "not array" code without resetting allow_array and allow_dict to False. Works because the peeled value is a string, and allow_array and allow_dict aren't used then. Tidy up anyway: recurse instead, defaulting allow_array and allow_dict to False. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-14-armbru@redhat.com>
2019-09-28qapi: Move check for reserved names out of add_name()Markus Armbruster
The checks for reserved names are spread far and wide. Move one from add_name() to new check_defn_name_str(). This is a first step towards collecting them all in dedicated name checking functions next to check_name(). While there, drop the quotes around the meta-type in check_name_str()'s error messages: "'command' uses ... name 'NAME'" becomes "command uses ... name 'NAME'". Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-13-armbru@redhat.com>
2019-09-28qapi: Report invalid '*' prefix like any other invalid nameMarkus Armbruster
The special "does not allow optional name" error is well meant, but confusing in practice. Drop it. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-12-armbru@redhat.com>
2019-09-28qapi: Use check_name_str() where it sufficesMarkus Armbruster
Replace check_name() by check_name_str() where the name is known to be a string. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-11-armbru@redhat.com>
2019-09-28qapi: Improve reporting of invalid name errorsMarkus Armbruster
Split check_name() into check_name_is_str() and check_name_str(), keep check_name() as a wrapper. Move add_name()'s call into its caller check_exprs(), and inline. This permits delaying check_name_str() there, so its error message gains an "in definition" line. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-10-armbru@redhat.com>
2019-09-28qapi: Reorder check_FOO() parameters for consistencyMarkus Armbruster
Most check_FOO() take the thing being checked as first argument. check_name(), check_type(), check_known_keys() don't. Clean that up. While there, drop a "Todo" comment that should have been dropped in commit 87adbbffd4 "qapi: add a dictionary form for TYPE". Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-9-armbru@redhat.com>
2019-09-28qapi: Improve reporting of member name clashesMarkus Armbruster
We report name clashes like this: struct-base-clash.json: In struct 'Sub': struct-base-clash.json:5: 'name' (member of Sub) collides with 'name' (member of Base) The "(member of Sub)" is redundant with "In struct 'Sub'". Comes from QAPISchemaMember.describe(). Pass info to it, so it can detect the redundancy and avoid it. Result: struct-base-clash.json: In struct 'Sub': struct-base-clash.json:5: member 'name' collides with member 'name' of type 'Base' Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-8-armbru@redhat.com>
2019-09-28qapi: Change frontend error messages to start with lower caseMarkus Armbruster
Starting error messages with a capital letter complicates things when text can get interpolated both at the beginning and in the middle of an error message. The next patch will do that. Switch to lower case to keep it simpler. For what it's worth, the GNU Coding Standards advise the message "should not begin with a capital letter when it follows a program name and/or file name, because that isn’t the beginning of a sentence. (The sentence conceptually starts at the beginning of the line.)" While there, avoid breaking lines containing multiple arguments in the middle of an argument. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20190927134639.4284-7-armbru@redhat.com>
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