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qapi: Make code-generating visitors use QAPIGen more

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The use of QAPIGen is rather shallow so far: most of the output
accumulation is not converted.  Take the next step: convert output
accumulation in the code-generating visitor classes.  Helper functions
outside these classes are not converted.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180211093607.27351-20-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
[eblake: rebase to earlier guardstart cleanup]
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Markus Armbruster
2018-02-26 13:50:08 -06:00
committed by Eric Blake
parent 834a3f3498
commit 71b3f0459c
7 changed files with 194 additions and 248 deletions
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81
scripts/qapi/types.py
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@ -167,36 +167,41 @@ void qapi_free_%(c_name)s(%(c_name)s *obj)
return ret
class QAPISchemaGenTypeVisitor(QAPISchemaVisitor):
def __init__(self, opt_builtins):
class QAPISchemaGenTypeVisitor(QAPISchemaMonolithicCVisitor):
def __init__(self, prefix, opt_builtins):
QAPISchemaMonolithicCVisitor.__init__(
self, prefix, 'qapi-types', ' * Schema-defined QAPI types',
__doc__)
self._opt_builtins = opt_builtins
self.decl = None
self.defn = None
self._fwdecl = None
self._btin = None
self._genc.preamble_add(mcgen('''
#include "qemu/osdep.h"
#include "qapi/dealloc-visitor.h"
#include "%(prefix)sqapi-types.h"
#include "%(prefix)sqapi-visit.h"
''',
prefix=prefix))
self._genh.preamble_add(mcgen('''
#include "qapi/util.h"
'''))
self._btin = '\n' + guardstart('QAPI_TYPES_BUILTIN')
def visit_begin(self, schema):
# gen_object() is recursive, ensure it doesn't visit the empty type
objects_seen.add(schema.the_empty_object_type.name)
self.decl = ''
self.defn = ''
self._fwdecl = ''
self._btin = '\n' + guardstart('QAPI_TYPES_BUILTIN')
def visit_end(self):
self.decl = self._fwdecl + self.decl
self._fwdecl = None
# To avoid header dependency hell, we always generate
# declarations for built-in types in our header files and
# simply guard them. See also opt_builtins (command line
# option -b).
self._btin += guardend('QAPI_TYPES_BUILTIN')
self.decl = self._btin + self.decl
self._genh.preamble_add(self._btin)
self._btin = None
def _gen_type_cleanup(self, name):
self.decl += gen_type_cleanup_decl(name)
self.defn += gen_type_cleanup(name)
self._genh.add(gen_type_cleanup_decl(name))
self._genc.add(gen_type_cleanup(name))
def visit_enum_type(self, name, info, values, prefix):
# Special case for our lone builtin enum type
@ -204,10 +209,10 @@ class QAPISchemaGenTypeVisitor(QAPISchemaVisitor):
if not info:
self._btin += gen_enum(name, values, prefix)
if self._opt_builtins:
self.defn += gen_enum_lookup(name, values, prefix)
self._genc.add(gen_enum_lookup(name, values, prefix))
else:
self._fwdecl += gen_enum(name, values, prefix)
self.defn += gen_enum_lookup(name, values, prefix)
self._genh.preamble_add(gen_enum(name, values, prefix))
self._genc.add(gen_enum_lookup(name, values, prefix))
def visit_array_type(self, name, info, element_type):
if isinstance(element_type, QAPISchemaBuiltinType):
@ -215,20 +220,20 @@ class QAPISchemaGenTypeVisitor(QAPISchemaVisitor):
self._btin += gen_array(name, element_type)
self._btin += gen_type_cleanup_decl(name)
if self._opt_builtins:
self.defn += gen_type_cleanup(name)
self._genc.add(gen_type_cleanup(name))
else:
self._fwdecl += gen_fwd_object_or_array(name)
self.decl += gen_array(name, element_type)
self._genh.preamble_add(gen_fwd_object_or_array(name))
self._genh.add(gen_array(name, element_type))
self._gen_type_cleanup(name)
def visit_object_type(self, name, info, base, members, variants):
# Nothing to do for the special empty builtin
if name == 'q_empty':
return
self._fwdecl += gen_fwd_object_or_array(name)
self.decl += gen_object(name, base, members, variants)
self._genh.preamble_add(gen_fwd_object_or_array(name))
self._genh.add(gen_object(name, base, members, variants))
if base and not base.is_implicit():
self.decl += gen_upcast(name, base)
self._genh.add(gen_upcast(name, base))
# TODO Worth changing the visitor signature, so we could
# directly use rather than repeat type.is_implicit()?
if not name.startswith('q_'):
@ -236,31 +241,13 @@ class QAPISchemaGenTypeVisitor(QAPISchemaVisitor):
self._gen_type_cleanup(name)
def visit_alternate_type(self, name, info, variants):
self._fwdecl += gen_fwd_object_or_array(name)
self.decl += gen_object(name, None, [variants.tag_member], variants)
self._genh.preamble_add(gen_fwd_object_or_array(name))
self._genh.add(gen_object(name, None,
[variants.tag_member], variants))
self._gen_type_cleanup(name)
def gen_types(schema, output_dir, prefix, opt_builtins):
blurb = ' * Schema-defined QAPI types'
genc = QAPIGenC(blurb, __doc__)
genh = QAPIGenH(blurb, __doc__)
genc.add(mcgen('''
#include "qemu/osdep.h"
#include "qapi/dealloc-visitor.h"
#include "%(prefix)sqapi-types.h"
#include "%(prefix)sqapi-visit.h"
''',
prefix=prefix))
genh.add(mcgen('''
#include "qapi/util.h"
'''))
vis = QAPISchemaGenTypeVisitor(opt_builtins)
vis = QAPISchemaGenTypeVisitor(prefix, opt_builtins)
schema.visit(vis)
genc.add(vis.defn)
genh.add(vis.decl)
genc.write(output_dir, prefix + 'qapi-types.c')
genh.write(output_dir, prefix + 'qapi-types.h')
vis.write(output_dir)