@@ -376,6 +376,10 @@ def xenlight_golang_union_from_C(ty = None, union_name = '', struct_name = ''):
s += 'tmp := (*C.{0})(unsafe.Pointer(&xc.{1}[0]))\n'.format(typename,union_name)
for nf in f.type.fields:
+ if isinstance(nf.type, idl.Array):
+ s += xenlight_golang_array_from_C(nf,cvarname='tmp')
+ continue
+
s += xenlight_golang_convert_from_C(nf,cvarname='tmp')
s += 'return nil\n'
@@ -416,7 +420,7 @@ def xenlight_golang_union_from_C(ty = None, union_name = '', struct_name = ''):
return (s,extras)
-def xenlight_golang_array_from_C(ty = None):
+def xenlight_golang_array_from_C(ty = None, cvarname = 'xc'):
"""
Convert C array to Go slice using the method
described here:
@@ -433,9 +437,9 @@ def xenlight_golang_array_from_C(ty = None):
clenvar = ty.type.lenvar.name
s += 'x.{0} = nil\n'.format(goname)
- s += 'if n := int(xc.{0}); n > 0 {{\n'.format(clenvar)
+ s += 'if n := int({0}.{1}); n > 0 {{\n'.format(cvarname,clenvar)
s += '{0} := '.format(cslice)
- s +='(*[1<<28]C.{0})(unsafe.Pointer(xc.{1}))[:n:n]\n'.format(ctypename, cname)
+ s +='(*[1<<28]C.{0})(unsafe.Pointer({1}.{2}))[:n:n]\n'.format(ctypename, cvarname, cname)
s += 'x.{0} = make([]{1}, n)\n'.format(goname, gotypename)
s += 'for i, v := range {0} {{\n'.format(cslice)
@@ -579,6 +583,11 @@ def xenlight_golang_union_to_C(ty = None, union_name = '',
s += 'var {0} C.{1}\n'.format(f.name,cgotype)
for uf in f.type.fields:
+ if isinstance(uf.type, idl.Array):
+ s += xenlight_golang_array_to_C(uf, cvarname=f.name,
+ govarname="tmp")
+ continue
+
s += xenlight_golang_convert_to_C(uf,cvarname=f.name,
govarname='tmp')
@@ -596,7 +605,7 @@ def xenlight_golang_union_to_C(ty = None, union_name = '',
return s
-def xenlight_golang_array_to_C(ty = None):
+def xenlight_golang_array_to_C(ty = None, cvarname="xc", govarname="x"):
s = ''
gotypename = xenlight_golang_fmt_name(ty.type.elem_type.typename)
@@ -608,27 +617,27 @@ def xenlight_golang_array_to_C(ty = None):
is_enum = isinstance(ty.type.elem_type,idl.Enumeration)
if gotypename in go_builtin_types or is_enum:
- s += 'if {0} := len(x.{1}); {2} > 0 {{\n'.format(golenvar,goname,golenvar)
- s += 'xc.{0} = (*C.{1})(C.malloc(C.size_t({2}*{3})))\n'.format(cname,ctypename,
+ s += 'if {0} := len({1}.{2}); {3} > 0 {{\n'.format(golenvar,govarname,goname,golenvar)
+ s += '{0}.{1} = (*C.{2})(C.malloc(C.size_t({3}*{4})))\n'.format(cvarname,cname,ctypename,
golenvar,golenvar)
- s += 'xc.{0} = C.int({1})\n'.format(clenvar,golenvar)
- s += 'c{0} := (*[1<<28]C.{1})(unsafe.Pointer(xc.{2}))[:{3}:{4}]\n'.format(goname,
- ctypename,cname,
+ s += '{0}.{1} = C.int({2})\n'.format(cvarname,clenvar,golenvar)
+ s += 'c{0} := (*[1<<28]C.{1})(unsafe.Pointer({2}.{3}))[:{4}:{5}]\n'.format(goname,
+ ctypename,cvarname,cname,
golenvar,golenvar)
- s += 'for i,v := range x.{0} {{\n'.format(goname)
+ s += 'for i,v := range {0}.{1} {{\n'.format(govarname,goname)
s += 'c{0}[i] = C.{1}(v)\n'.format(goname,ctypename)
s += '}\n}\n'
return s
- s += 'if {0} := len(x.{1}); {2} > 0 {{\n'.format(golenvar,goname,golenvar)
- s += 'xc.{0} = (*C.{1})(C.malloc(C.ulong({2})*C.sizeof_{3}))\n'.format(cname,ctypename,
+ s += 'if {0} := len({1}.{2}); {3} > 0 {{\n'.format(golenvar,govarname,goname,golenvar)
+ s += '{0}.{1} = (*C.{2})(C.malloc(C.ulong({3})*C.sizeof_{4}))\n'.format(cvarname,cname,ctypename,
golenvar,ctypename)
- s += 'xc.{0} = C.int({1})\n'.format(clenvar,golenvar)
- s += 'c{0} := (*[1<<28]C.{1})(unsafe.Pointer(xc.{2}))[:{3}:{4}]\n'.format(goname,
- ctypename,cname,
+ s += '{0}.{1} = C.int({2})\n'.format(cvarname,clenvar,golenvar)
+ s += 'c{0} := (*[1<<28]C.{1})(unsafe.Pointer({2}.{3}))[:{4}:{5}]\n'.format(goname,
+ ctypename,cvarname,cname,
golenvar,golenvar)
- s += 'for i,v := range x.{0} {{\n'.format(goname)
+ s += 'for i,v := range {0}.{1} {{\n'.format(govarname,goname)
s += 'if err := v.toC(&c{0}[i]); err != nil {{\n'.format(goname)
s += 'return fmt.Errorf("converting field {0}: %v", err)\n'.format(goname)
s += '}\n}\n}\n'
Generation for KeyedUnion types doesn't support Arrays. The smbios support will place an smbios array inside the hvm KeyedUnion, and gentotypes doesn't generate buildable Go code. Have KeyedUnion add an idl.Array check and issue the approriate xenlight_golang_array_to_C and xenlight_golang_array_from_C calls when needed. This matches how it is done in xenlight_golang_define_to_C & xenlight_golang_define_from_C xenlight_golang_array_to_C and xenlight_golang_array_from_C need to be extended to set the cvarname and govarname as approriate for the KeyedUnion cases to match the surrounding code. Signed-off-by: Jason Andryuk <jandryuk@gmail.com> --- tools/golang/xenlight/gengotypes.py | 41 ++++++++++++++++++----------- 1 file changed, 25 insertions(+), 16 deletions(-)