When we introduced the QAPISchema intermediate representation (commit
ac88219a6c), 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>
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>
We take pains to include the offending expression in error messages,
e.g.
tests/qapi-schema/alternate-any.json:2: alternate 'Alt' member 'one' cannot use type 'any'
But not always:
tests/qapi-schema/enum-if-invalid.json:2: 'if' condition must be a string or a list of strings
Instead of improving them one by one, report the offending expression
whenever it is known, like this:
tests/qapi-schema/enum-if-invalid.json: In enum 'TestIfEnum':
tests/qapi-schema/enum-if-invalid.json:2: 'if' condition must be a string or a list of strings
Error messages that mention the offending expression become a bit
redundant, e.g.
tests/qapi-schema/alternate-any.json: In alternate 'Alt':
tests/qapi-schema/alternate-any.json:2: alternate 'Alt' member 'one' cannot use type 'any'
I'll take care of that later in this series.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20190927134639.4284-5-armbru@redhat.com>
check_union() checks the discriminator exists in base and makes sense.
Two error messages mention the base. These are broken for anonymous
bases, as demonstrated by tests flat-union-invalid-discriminator and
flat-union-invalid-if-discriminator.err. The third one doesn't
bother.
First broken when commit ac4338f8eb "qapi: Allow anonymous base for
flat union" (v2.6.0) neglected to adjust the "not a member of base"
error message. Commit ccadd6bcba "qapi: Add 'if' to implicit struct
members" (v4.0.0) then cloned the flawed error message.
Dumb them down not to mention the base.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190914153506.2151-11-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
When the union definition's base is an object, some error messages
show it as an OrderedDict. Oops. Mark FIXME.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190914153506.2151-5-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
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>
Markus Armbruster
Marc-André Lureau