mirror of https://github.com/go-python/gopy.git
bind: implement getter/setter cpy-wrappers
This commit is contained in:
Sebastien Binet
parent
335cdf609f
commit
4a098ea7a8
236
bind/gencpy.go
236
bind/gencpy.go
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@ -365,61 +365,8 @@ func (g *cpyGen) genStructMembers(cpy Struct) {
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if !f.Exported() {
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continue
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}
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ft := f.Type()
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g.decl.Printf("static PyObject*\n")
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g.decl.Printf(
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"_gopy_%[1]s_getter_%[2]d(_gopy_%[1]s *self, void *closure); /* %[3]s */\n",
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cpy.ID(),
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i+1,
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f.Name(),
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)
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g.impl.Printf("static PyObject*\n")
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g.impl.Printf(
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"_gopy_%[1]s_getter_%[2]d(_gopy_%[1]s *self, void *closure) /* %[3]s */ {\n",
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cpy.ID(),
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i+1,
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f.Name(),
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)
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g.impl.Indent()
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ftname := cgoTypeName(ft)
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if needWrapType(ft) {
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ftname = fmt.Sprintf("GoPy_%[1]s_field_%d", cpy.GoName(), i+1)
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g.impl.Printf(
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"%[1]s ret = GoPy_%[2]s_getter_%[3]d(self->cgopy);\n",
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ftname,
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cpy.ID(),
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i+1,
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)
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} else {
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g.impl.Printf(
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"%[1]s ret = GoPy_%[2]s_getter_%[3]d(self->cgopy);\n",
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ftname,
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cpy.ID(),
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i+1,
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)
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}
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g.impl.Printf("Py_RETURN_NONE;\n") // FIXME(sbinet)
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g.impl.Outdent()
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g.impl.Printf("}\n\n")
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g.decl.Printf("static int\n")
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g.decl.Printf(
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"_gopy_%[1]s_setter_%[2]d(_gopy_%[1]s *self, PyObject *value, void *closure);\n",
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cpy.ID(),
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i+1,
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)
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g.impl.Printf("static int\n")
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g.impl.Printf(
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"_gopy_%[1]s_setter_%[2]d(_gopy_%[1]s *self, PyObject *value, void *closure) {\n",
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cpy.ID(),
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i+1,
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)
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g.impl.Indent()
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g.impl.Printf("return 0;\n") // FIXME(sbinet)
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g.impl.Outdent()
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g.impl.Printf("}\n\n")
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g.genStructMemberGetter(cpy, i, f)
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g.genStructMemberSetter(cpy, i, f)
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}
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g.impl.Printf("/* tp_getset for %s.%v */\n", pkgname, cpy.GoName())
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@ -484,6 +431,185 @@ func (g *cpyGen) genStructMembers(cpy Struct) {
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}
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func (g *cpyGen) genStructMemberGetter(cpy Struct, i int, f types.Object) {
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pkg := cpy.Package()
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var (
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recv *Var
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self = newVar(pkg, cpy.GoType(), cpy.GoName(), cpy.GoName(), cpy.Doc())
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)
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ft := f.Type()
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g.decl.Printf("static PyObject*\n")
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g.decl.Printf(
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"_gopy_%[1]s_getter_%[2]d(_gopy_%[1]s *self, void *closure); /* %[3]s */\n",
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cpy.ID(),
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i+1,
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f.Name(),
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)
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g.impl.Printf("static PyObject*\n")
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g.impl.Printf(
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"_gopy_%[1]s_getter_%[2]d(_gopy_%[1]s *self, void *closure) /* %[3]s */ {\n",
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cpy.ID(),
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i+1,
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f.Name(),
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)
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g.impl.Indent()
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var (
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ifield = newVar(pkg, ft, f.Name(), "ret", "")
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params = []*Var{self}
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results = []*Var{ifield}
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fgetname = fmt.Sprintf("GoPy_%[1]s_getter_%[2]d", cpy.ID(), i+1)
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fgetid = fmt.Sprintf("%[1]s_getter_%[2]d", cpy.ID(), i+1)
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fgetret = ft
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)
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if false {
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fget := Func{
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pkg: pkg,
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sig: newSignature(pkg, recv, params, results),
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typ: nil,
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name: fgetname,
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id: fgetid,
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doc: "",
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ret: fgetret,
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err: false,
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}
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g.genFuncBody(fget)
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}
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g.impl.Printf("PyObject *o = NULL;\n")
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ftname := cgoTypeName(ft)
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if needWrapType(ft) {
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ftname = fmt.Sprintf("GoPy_%[1]s_field_%d", cpy.GoName(), i+1)
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g.impl.Printf(
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"%[1]s cgopy_ret = GoPy_%[2]s_getter_%[3]d(self->cgopy);\n",
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ftname,
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cpy.ID(),
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i+1,
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)
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} else if ifield.isGoString() {
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ifield.genDecl(g.impl)
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g.impl.Printf(
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"c_ret = (%[1]s)GoPy_%[2]s_getter_%[3]d(self->cgopy);\n",
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ftname,
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cpy.ID(),
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i+1,
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)
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g.impl.Printf(
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"cgopy_%[1]s = CGoPy_CString(c_%[1]s);\n",
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ifield.Name(),
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)
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} else {
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g.impl.Printf(
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"%[1]s cgopy_ret = GoPy_%[2]s_getter_%[3]d(self->cgopy);\n",
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ftname,
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cpy.ID(),
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i+1,
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)
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}
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{
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format := []string{}
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funcArgs := []string{}
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switch len(results) {
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case 1:
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ret := results[0]
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pyfmt, _ := ret.getArgParse()
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format = append(format, pyfmt)
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funcArgs = append(funcArgs, "cgopy_ret")
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default:
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panic("bind: impossible")
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}
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g.impl.Printf("o = Py_BuildValue(%q, %s);\n",
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strings.Join(format, ""),
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strings.Join(funcArgs, ", "),
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)
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}
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if ifield.isGoString() {
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g.impl.Printf("free((void*)cgopy_%[1]s);\n", ifield.Name())
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}
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g.impl.Printf("return o;\n")
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g.impl.Outdent()
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g.impl.Printf("}\n\n")
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}
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func (g *cpyGen) genStructMemberSetter(cpy Struct, i int, f types.Object) {
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var (
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pkg = cpy.Package()
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ft = f.Type()
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self = newVar(pkg, cpy.GoType(), cpy.GoName(), "self", "")
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ifield = newVar(pkg, ft, f.Name(), "ret", "")
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fsetname = fmt.Sprintf("GoPy_%[1]s_setter_%[2]d", cpy.ID(), i+1)
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)
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g.decl.Printf("static int\n")
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g.decl.Printf(
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"_gopy_%[1]s_setter_%[2]d(_gopy_%[1]s *self, PyObject *value, void *closure);\n",
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cpy.ID(),
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i+1,
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)
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g.impl.Printf("static int\n")
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g.impl.Printf(
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"_gopy_%[1]s_setter_%[2]d(_gopy_%[1]s *self, PyObject *value, void *closure) {\n",
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cpy.ID(),
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i+1,
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)
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g.impl.Indent()
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ifield.genDecl(g.impl)
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g.impl.Printf("PyObject *tuple = NULL;\n\n")
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g.impl.Printf("if (value == NULL) {\n")
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g.impl.Indent()
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g.impl.Printf(
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"PyErr_SetString(PyExc_TypeError, \"Cannot delete '%[1]s' attribute\");\n",
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f.Name(),
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)
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g.impl.Printf("return -1;\n")
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g.impl.Outdent()
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g.impl.Printf("}\n")
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// TODO(sbinet) check 'value' type (PyString_Check, PyInt_Check, ...)
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g.impl.Printf("tuple = PyTuple_New(1);\n")
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g.impl.Printf("Py_INCREF(value);\n")
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g.impl.Printf("PyTuple_SET_ITEM(tuple, 0, value);\n\n")
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g.impl.Printf("\nif (!PyArg_ParseTuple(tuple, ")
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pyfmt, pyaddr := ifield.getArgParse()
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g.impl.Printf("%q, %s)) {\n", pyfmt, pyaddr)
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g.impl.Indent()
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g.impl.Printf("Py_DECREF(tuple);\n")
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g.impl.Printf("return -1;\n")
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g.impl.Outdent()
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g.impl.Printf("}\n")
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g.impl.Printf("Py_DECREF(tuple);\n\n")
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if ifield.isGoString() {
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g.impl.Printf(
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"c_%[1]s = CGoPy_GoString((char*)cgopy_%[1]s);\n",
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ifield.Name(),
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)
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}
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g.impl.Printf("%[1]s((%[2]s)(self->cgopy), c_%[3]s);\n",
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fsetname,
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self.CGoType(),
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ifield.Name(),
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)
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g.impl.Printf("return 0;\n")
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g.impl.Outdent()
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g.impl.Printf("}\n\n")
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}
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func (g *cpyGen) genStructMethods(cpy Struct) {
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pkgname := cpy.Package().Name()
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