Implement new type system. Working wrapper for simple Objective-C
interfaces.
This commit is contained in:
parent
4867bb80f4
commit
885658b67b
2
main.go
2
main.go
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@ -212,7 +212,7 @@ func Start(args ProgramArgs) (err error) {
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w.AddCategory(x)
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}
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}
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w.Wrap("NSString")
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w.Wrap([]string{"ClassOne"})
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return nil
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}
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@ -14,6 +14,17 @@ func dbg(f string, xs ...interface{}) {
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}
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}
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func (n *Node) HasFunc() bool {
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if n == nil {
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return false
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}
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for _,c := range n.Children {
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if c.Kind == "Function" || c.HasFunc() {
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return true
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}
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}
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return false
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}
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func Parse(s string) (*Node, error) {
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s2, n := TypeName(s,NewNode("AST"))
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@ -83,6 +94,11 @@ func (n *Node) PointsTo() *Node {
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return n.stripAbstract("Pointer")
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}
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//IsPointer returns true if the node is a pointer
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func (n *Node) IsPointer() bool {
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return n.PointsTo != nil
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}
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//ArrayOf, when called on an array node returns a node describing the type
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//of the elements of the array. Otherwise returns nil when called on
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//non-array types.
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@ -91,3 +107,26 @@ func (n *Node) ArrayOf() *Node {
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return n.stripAbstract("Array")
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}
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//IsArray returns true if the node is an array
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func (n *Node) IsArray() bool {
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return n.ArrayOf() != nil
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}
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func (n *Node) IsStruct() bool {
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if n == nil || len(n.Children) < 1 {
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return false
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}
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return n.Children[0].Kind == "Struct"
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}
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//BaseType strips off all layers of pointer indirection
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func (n *Node) BaseType() *Node {
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if n == nil {
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return nil
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}
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if n2 := n.PointsTo(); n2 == nil {
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return n
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} else {
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return n2.BaseType()
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}
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}
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@ -67,8 +67,21 @@ func (n *Node) AddChild(c *Node) *Node {
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return n
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}
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func (n *Node) CtypeSimplified() string {
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ignore := map[string]bool{
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"NullableAnnotation": true,
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"TypeQualifier": true,
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"GenericList": true,
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}
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return n._Ctype(ignore)
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}
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func (n *Node) Ctype() string {
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if n == nil {
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return n._Ctype(map[string]bool{})
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}
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func (n *Node) _Ctype(ignore map[string]bool) string {
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if n == nil || ignore[n.Kind] {
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return ""
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}
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var ret strings.Builder
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@ -76,8 +89,8 @@ func (n *Node) Ctype() string {
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if n == nil { return []string{} }
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ret := []string{}
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for _,c := range n.Children {
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if x := c.Ctype(); x != "" {
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ret = append(ret, c.Ctype())
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if x := c._Ctype(ignore); x != "" {
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ret = append(ret, x)
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}
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}
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return ret
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296
wrap/main.go
296
wrap/main.go
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@ -6,47 +6,38 @@ import (
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"strings"
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"gitlab.wow.st/gmp/clast/ast"
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"gitlab.wow.st/gmp/clast/types"
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)
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var (
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Debug = false
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)
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type cStruct struct {
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goName, cName string
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}
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type Wrapper struct {
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Interfaces map[string]Interface
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Types map[string]string
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gtMap map[string]string
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ctMap map[string]*types.Node // map from go type as a string.
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goStructTypes map[string]cStruct // map from gotype to struct descr.
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goInterfaceTypes []string
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cCode strings.Builder // put cGo code here
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goTypes strings.Builder // put Go type declarations here
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goCode strings.Builder // put Go code here
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Processed map[string]bool
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}
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// translate C builtin types to CGo
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var builtinTypes map[string]string = map[string]string{
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"char": "byte",
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"signed char": "byte",
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"unsigned char": "byte",
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"short": "int",
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"unsigned short": "int",
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"int": "int",
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"unsigned int": "int",
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"long": "int",
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"unsigned long": "int",
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"long long": "int",
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"unsigned long long": "int",
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"float": "float64",
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"double": "float64",
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"complex float": "C.complexfloat",
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"complex double": "C.complexdouble",
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}
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var gobuiltinTypes map[string]bool = map[string]bool{
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"byte": true,
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"int": true,
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"float64": true,
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}
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/*
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// translate C builtin types to CGo
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var builtinTypes map[string]string = map[string]string{
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"char": "C.char",
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"signed char": "C.schar",
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@ -63,58 +54,114 @@ var builtinTypes map[string]string = map[string]string{
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"double": "C.double",
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"complex float": "C.complexfloat",
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"complex double": "C.complexdouble",
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}*/
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}
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func (w *Wrapper) AddType(t1,t2,class string) {
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fmt.Printf("Type: %s\n",t1)
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t := typeOrType2(t1,t2)
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//AddType registers a type that needs a Go wrapper struct
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func (w *Wrapper) AddType(t, class string) {
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//fmt.Printf("Type: %s\n",t)
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if _,ok := builtinTypes[t]; ok {
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return
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}
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nt, err := goType(t,class)
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nt := w.goType(t,class)
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if Debug {
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fmt.Printf("AddType(): (%s) (%s) -> %s\n",t1,t2,nt)
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fmt.Printf("AddType(): (%s) -> %s\n",t,nt)
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}
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if err != nil {
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if nt == "" {
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return
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}
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if _,ok := w.Interfaces[nt]; !ok { // not an interface
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return
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}
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w.Types[nt] = t
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}
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func goType(t,class string) (string, error) {
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// strip off pointers, < > and blank space
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nt := strings.ReplaceAll(t,"*","")
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if len(nt) > 3 && nt[0:3] == "id<" {
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nt = t[3:len(t)-1]
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func (w *Wrapper) goType(t,class string) string {
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n,err := types.Parse(t)
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if err != nil {
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//fmt.Printf("Cannot parse type %s\n",t)
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return ""
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}
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nt = strings.ReplaceAll(nt,"const ","")
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nt = strings.ReplaceAll(nt," _Nullable","")
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nt = strings.ReplaceAll(nt," _Nonnull","")
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if t == "instancetype" {
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return class, nil
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if n.HasFunc() {
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//fmt.Printf("Function types not supported (%s)\n",t)
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return ""
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}
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nt = strings.ReplaceAll(nt,"<","__")
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nt = strings.ReplaceAll(nt,">","__")
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nt = strings.ReplaceAll(nt,",","_")
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if x,ok := builtinTypes[nt]; ok { // do not add builtin types
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return x, nil
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ct := n.CtypeSimplified()
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ret := ""
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if nt, ok := w.gtMap[ct]; ok { // we already know this type
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return nt
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}
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if len(nt) > 5 && nt[0:5] == "enum " { // FIXME: deal with enums?
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return "", fmt.Errorf("goType(): enum")
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if x := n.PointsTo(); x != nil {
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pt := x.CtypeSimplified()
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// if _,ok := w.Interfaces[pt]; ok {
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// // pointer to Objective-C interface, stop here
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// //fmt.Printf("goType(): %s -> %s\n",t,pt)
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// w.gtMap[ct] = pt
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// w.goInterfaceTypes = append(w.goInterfaceTypes,pt)
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// return pt
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// }
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// pt = x.BaseType().CtypeSimplified()
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// if _,ok := w.Interfaces[pt]; ok {
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// // ultimately points to an interface, so need a wrapper
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// w.AddType(pt,class)
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// ret = w.goType(pt,class) + "Ptr"
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// //fmt.Printf("goType(): %s -> %s\n",t,ret)
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// w.gtMap[ct] = ret
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// return ret
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// }
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// pointer to non-interface type
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ret = "*" + w.goType(pt,class)
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w.gtMap[ct] = ret
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w.ctMap[ret] = n
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return ret
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}
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nt = strings.ReplaceAll(nt," ","")
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if nt == "void" {
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return "", fmt.Errorf("goType(): void")
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if x := n.ArrayOf(); x != nil {
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pt := x.CtypeSimplified()
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w.AddType(pt,class)
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ret = w.goType(pt,class) + "Arr"
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//fmt.Printf("goType(): %s -> %s\n",t,ret)
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w.gtMap[ct] = ret
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w.ctMap[ret] = n
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return ret
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}
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if nt[len(nt)-1] == ')' { // skip function pointers
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return "", fmt.Errorf("goType(): function pointer")
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if ct == "id" { ct = "NSObject" }
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if ct == "instancename" { ct = class }
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if bt,ok := builtinTypes[ct]; ok {
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ct = bt
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}
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return nt, nil
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if _,ok := w.Interfaces[ct]; ok {
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// pointer to Objective-C interface, stop here
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//fmt.Printf("goType(): %s -> %s\n",t,pt)
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w.gtMap[ct] = ct
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w.goInterfaceTypes = append(w.goInterfaceTypes,ct)
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w.ctMap[ct] = n
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return ct
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}
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if n.IsStruct() {
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gt := strings.Title(ct)
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gt = strings.ReplaceAll(gt, " ", "")
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w.gtMap[ct] = gt
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w.goStructTypes[gt] = cStruct{ goName: gt, cName: ct }
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//fmt.Printf("goType(): %s -> %s\n",t,gt)
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w.ctMap[gt] = n
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return gt
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}
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//fmt.Printf("goType(): %s -> %s\n",t,ct)
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w.gtMap[ct] = ct
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w.ctMap[ct] = n
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return ct
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}
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//FIXME: to be deleted
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func cType(t, class string) string {
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nt := strings.ReplaceAll(t," _Nullable","")
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nt = strings.ReplaceAll(nt," _Nonnull","")
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n, err := types.Parse(t)
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if err != nil {
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//fmt.Printf("Cannot parse type %s\n",t)
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return "NOT IMPLEMENTED"
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}
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nt := n.CtypeSimplified()
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if nt == "id" {
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return "NSObject"
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}
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if nt == "instancetype" {
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return class + " *"
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}
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@ -127,25 +174,29 @@ func NewWrapper(debug bool) *Wrapper {
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return &Wrapper{
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Interfaces: map[string]Interface{},
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Types: map[string]string{},
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gtMap: map[string]string{},
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ctMap: map[string]*types.Node{},
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goStructTypes: map[string]cStruct{},
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Processed: map[string]bool{},
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}
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}
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type Property struct {
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Name, Type, Type2, Attr string
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Name, Type, Attr string
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}
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type Parameter struct {
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Pname, Vname, Type, Type2 string
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Pname, Vname, Type string
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}
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type Method struct {
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Name, Type, Type2, Class string
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Name, Type, Class string
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ClassMethod bool
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Parameters []Parameter
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}
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func (m Method) isVoid() bool {
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return typeOrType2(m.Type,m.Type2) == "void"
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return m.Type == "void"
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}
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func (w Wrapper) isObject(tp string) bool { // takes a goType
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@ -161,8 +212,9 @@ func (w Wrapper) cparamlist(m Method) string {
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ret = append(ret,"void* obj")
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}
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for _,p := range m.Parameters {
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tp := typeOrType2(p.Type,p.Type2)
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gtp,_ := goType(tp,m.Class)
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tp := p.Type
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gtp := w.goType(tp,m.Class)
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//w.goType(tp,m.Class)
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if w.isObject(gtp) {
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tp = "void*"
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}
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@ -171,7 +223,7 @@ func (w Wrapper) cparamlist(m Method) string {
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return strings.Join(ret,", ")
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}
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func (m Method) objcparamlist() string {
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func (w Wrapper) objcparamlist(m Method) string {
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if len(m.Parameters) == 0 {
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return m.Name
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}
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@ -188,6 +240,8 @@ func (m Method) objcparamlist() string {
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return strings.Join(ret," ")
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}
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//goreserved is a map telling whether a word is a go reserved word that is not
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//also a C/Objective-C reserved word.
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var goreserved map[string]bool = map[string]bool{
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"range": true,
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}
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@ -197,8 +251,9 @@ func (w Wrapper) goparamlist(m Method) (string,[]string,bool) {
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tps := []string{}
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for _,p := range m.Parameters {
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gname := p.Vname
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tp,err := goType(typeOrType2(p.Type,p.Type2),m.Class)
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if err != nil {
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w.AddType(p.Type,m.Class)
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tp := w.goType(p.Type,m.Class)
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if tp == "" {
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return "UNSUPPORTED TYPE", []string{},false
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}
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if w.isObject(tp) {
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@ -223,9 +278,27 @@ func (w Wrapper) goparamnames(m Method) string {
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if goreserved[gname] {
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gname = gname + "_"
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}
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gt,_ := goType(typeOrType2(p.Type,p.Type2),m.Class)
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gt := w.goType(p.Type,m.Class)
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if gt == "" {
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return "UNSUPPORTED TYPE " + p.Type
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}
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if w.isObject(gt) {
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gname = gname + ".ptr"
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} else {
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n := w.ctMap[gt]
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star := ""
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for pt := n.PointsTo(); pt != nil; pt = pt.PointsTo() {
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star = star + "*"
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}
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ct := n.BaseType().CtypeSimplified()
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if n.IsStruct() {
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ct = strings.ReplaceAll(ct,"struct ","")
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ct = "struct_" + ct
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}
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if gt[0] == '*' { // wrap pointers in unsafe.Pointer()
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gname = "unsafe.Pointer(" + gname + ")"
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}
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gname = "(" + star + "C." + ct + ")(" + gname + ")"
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}
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ret = append(ret,gname)
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}
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@ -252,12 +325,14 @@ func (w *Wrapper) AddInterface(n *ast.ObjCInterfaceDecl) {
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func (w *Wrapper) AddCategory(n *ast.ObjCCategoryDecl) {
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ns := n.Children()
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if len(ns) > 0 {
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switch x := ns[0].(type) {
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case *ast.ObjCInterface:
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w.add(x.Name, ns[1:])
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default:
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fmt.Printf("Not adding methods for %s: interface name not found in first child node of category defclaration\n",n.Name)
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return
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}
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}
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fmt.Printf("Not adding methods for %s: interface name not found in first child node of category defclaration\n",n.Name)
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}
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func (w *Wrapper) add(name string, ns []ast.Node) {
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@ -269,7 +344,7 @@ func (w *Wrapper) add(name string, ns []ast.Node) {
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Properties: map[string]Property{},
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Methods: map[string]Method{},
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}
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w.AddType(name,"",name)
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w.AddType(name,name)
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}
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var avail bool
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for _,c := range ns {
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@ -279,11 +354,10 @@ func (w *Wrapper) add(name string, ns []ast.Node) {
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p := Property{
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Name: x.Name,
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Type: x.Type,
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Type2: x.Type2,
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}
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//_,avail = w.GetParms(x,name) // TODO
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//if avail {
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w.AddType(x.Type,x.Type2,name)
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// w.AddType(x.Type,name)
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i.Properties[p.Name] = p
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//}
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case *ast.ObjCMethodDecl:
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@ -291,13 +365,12 @@ func (w *Wrapper) add(name string, ns []ast.Node) {
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m := Method{
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Name: x.Name,
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Type: x.Type,
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Type2: x.Type2,
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Class: name,
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ClassMethod: x.ClassMethod,
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}
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m.Parameters, avail = w.GetParms(x,name)
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if avail {
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w.AddType(x.Type,x.Type2,name)
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// w.AddType(x.Type,name)
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i.Methods[m.Name] = m
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}
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||||
case *ast.ObjCProtocol:
|
||||
|
|
@ -313,6 +386,7 @@ func (w *Wrapper) add(name string, ns []ast.Node) {
|
|||
//fmt.Println(reflect.TypeOf(x))
|
||||
}
|
||||
}
|
||||
//fmt.Println("Add interface ",i.Name)
|
||||
w.Interfaces[i.Name] = i
|
||||
}
|
||||
|
||||
|
|
@ -321,6 +395,9 @@ type AvailAttr struct {
|
|||
Deprecated bool
|
||||
}
|
||||
|
||||
//GetParms returns the parameters of a method declaration and a bool
|
||||
//indicating whether the given method is available on MacOS and not
|
||||
//deprecated.
|
||||
func (w *Wrapper) GetParms(n *ast.ObjCMethodDecl,class string) ([]Parameter,bool) {
|
||||
ret := make([]Parameter,0)
|
||||
avail := make([]AvailAttr,0)
|
||||
|
|
@ -332,7 +409,6 @@ func (w *Wrapper) GetParms(n *ast.ObjCMethodDecl,class string) ([]Parameter,bool
|
|||
Pname: n.Parameters[j],
|
||||
Vname: x.Name,
|
||||
Type: x.Type,
|
||||
Type2: x.Type2,
|
||||
}
|
||||
ret = append(ret,p)
|
||||
j++
|
||||
|
|
@ -373,13 +449,6 @@ func (w *Wrapper) GetParms(n *ast.ObjCMethodDecl,class string) ([]Parameter,bool
|
|||
return ret, true
|
||||
}
|
||||
|
||||
func typeOrType2(t1, t2 string) string {
|
||||
if t2 != "" && t2 != "id" {
|
||||
return t2
|
||||
}
|
||||
return t1
|
||||
}
|
||||
|
||||
func (w *Wrapper) ProcessType(gotype string) {
|
||||
if gotype == "" {
|
||||
return
|
||||
|
|
@ -407,11 +476,10 @@ func (w *Wrapper) ProcessType(gotype string) {
|
|||
if i.Name != i.Super {
|
||||
w.ProcessType(i.Super)
|
||||
}
|
||||
}
|
||||
var fields string
|
||||
// if there is an Interface known for this type, decide if it is the
|
||||
// root object and if so give it a pointer element:
|
||||
if i,ok := w.Interfaces[gotype]; ok && i.IsRoot() {
|
||||
if i.IsRoot() {
|
||||
fields = "ptr unsafe.Pointer"
|
||||
} else {
|
||||
fields = i.Super // embed superclass
|
||||
|
|
@ -421,6 +489,14 @@ func (w *Wrapper) ProcessType(gotype string) {
|
|||
type %s struct { %s }
|
||||
`,ctype, gotype, fields))
|
||||
w.Processed[gotype] = true
|
||||
}
|
||||
if s,ok := w.goStructTypes[gotype]; ok {
|
||||
ct := strings.ReplaceAll(s.cName," ","_")
|
||||
w.goTypes.WriteString(fmt.Sprintf(`
|
||||
type %s %s
|
||||
`,s.goName,"C." + ct))
|
||||
w.Processed[gotype] = true
|
||||
}
|
||||
}
|
||||
|
||||
func (w *Wrapper) ProcessTypes(tps []string) {
|
||||
|
|
@ -429,9 +505,7 @@ func (w *Wrapper) ProcessTypes(tps []string) {
|
|||
}
|
||||
}
|
||||
|
||||
func (w *Wrapper) Wrap(toproc string) {
|
||||
|
||||
w.Processed = make(map[string]bool)
|
||||
func (w *Wrapper) Wrap(toproc []string) {
|
||||
|
||||
w.cCode.WriteString(`/*
|
||||
#cgo CFLAGS: -x objective-c
|
||||
|
|
@ -440,46 +514,51 @@ func (w *Wrapper) Wrap(toproc string) {
|
|||
#import <Foundation/Foundation.h>
|
||||
`)
|
||||
|
||||
pInterfaces := map[string]Interface {toproc: w.Interfaces[toproc]}
|
||||
for k,v := range pInterfaces {
|
||||
pInterfaces := map[string]Interface{}
|
||||
for _,iface := range toproc {
|
||||
pInterfaces[iface] = w.Interfaces[iface]
|
||||
}
|
||||
for iname,i := range pInterfaces {
|
||||
if Debug {
|
||||
fmt.Printf("Interface %s: %d properties, %d methods\n",
|
||||
k, len(v.Properties), len(v.Methods))
|
||||
iname, len(i.Properties), len(i.Methods))
|
||||
}
|
||||
|
||||
w.goCode.WriteString(fmt.Sprintf(`
|
||||
func New%s() *%s {
|
||||
ret := &%s{}
|
||||
ret.ptr = unsafe.Pointer(C.New%s())
|
||||
ret = ret.Init()
|
||||
return ret
|
||||
}
|
||||
`,v.Name,v.Name,v.Name,v.Name))
|
||||
`,i.Name,i.Name,i.Name,i.Name))
|
||||
|
||||
w.cCode.WriteString(fmt.Sprintf(`
|
||||
%s*
|
||||
New%s() {
|
||||
return [%s alloc];
|
||||
}
|
||||
`, v.Name, v.Name, v.Name))
|
||||
`, i.Name, i.Name, i.Name))
|
||||
|
||||
for _,y := range v.Properties {
|
||||
for _,p := range i.Properties {
|
||||
if Debug {
|
||||
fmt.Printf(" property: %s (%s)\n", y.Name, typeOrType2(y.Type,y.Type2))
|
||||
fmt.Printf(" property: %s (%s)\n", p.Name, p.Type)
|
||||
}
|
||||
w.AddType(p.Type,i.Name)
|
||||
}
|
||||
for _,y := range v.Methods {
|
||||
for _,m := range i.Methods {
|
||||
if Debug {
|
||||
fmt.Printf(" method: %s (%s)\n", y.Name, typeOrType2(y.Type,y.Type2))
|
||||
fmt.Printf(" method: %s (%s)\n", m.Name, m.Type)
|
||||
}
|
||||
gname := strings.Title(y.Name)
|
||||
gname := strings.Title(m.Name)
|
||||
|
||||
grtype := ""
|
||||
grptr := ""
|
||||
cmtype := cType(typeOrType2(y.Type,y.Type2),v.Name)
|
||||
if !y.isVoid() {
|
||||
var err error
|
||||
grtype,err = goType(cmtype,v.Name)
|
||||
if err != nil {
|
||||
w.AddType(m.Type,i.Name)
|
||||
cmtype := cType(m.Type,i.Name)
|
||||
if !m.isVoid() {
|
||||
grtype = w.goType(cmtype,i.Name)
|
||||
if grtype == "" {
|
||||
grtype = fmt.Sprintf("// goType(%s): NOT IMPLEMENTED\n",cmtype)
|
||||
continue
|
||||
}
|
||||
|
|
@ -487,10 +566,15 @@ New%s() {
|
|||
gcast := ""
|
||||
gcast2 := ""
|
||||
if grtype != "" {
|
||||
if _,ok := w.Interfaces[grtype]; ok {
|
||||
grptr = "*"
|
||||
gcast = "ret := &" + grtype + "{}\n ret.ptr = unsafe.Pointer("
|
||||
if grtype[0] == '*' { // pointer return type
|
||||
if _,ok := w.Interfaces[grtype[1:]]; ok {
|
||||
//grptr = "*"
|
||||
gcast = "ret := &" + grtype[1:] + "{}\n ret.ptr = unsafe.Pointer("
|
||||
gcast2 = ")\n return ret"
|
||||
} else {
|
||||
gcast = "return (" + grtype + ")(unsafe.Pointer("
|
||||
gcast2 = "))"
|
||||
}
|
||||
} else {
|
||||
gcast = fmt.Sprintf("return (%s)(",grtype)
|
||||
gcast2 = ")"
|
||||
|
|
@ -500,7 +584,7 @@ New%s() {
|
|||
continue
|
||||
}
|
||||
w.ProcessType(grtype)
|
||||
gplist, gptypes, ok := w.goparamlist(y)
|
||||
gplist, gptypes, ok := w.goparamlist(m)
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
|
|
@ -508,15 +592,15 @@ New%s() {
|
|||
w.goCode.WriteString(fmt.Sprintf(`
|
||||
func (o *%s) %s(%s) %s%s {
|
||||
%sC.%s_%s(%s)%s
|
||||
}`,v.Name, gname, gplist, grptr, grtype, gcast, v.Name, y.Name, w.goparamnames(y),gcast2))
|
||||
}`,i.Name, gname, gplist, grptr, grtype, gcast, i.Name, m.Name, w.goparamnames(m),gcast2))
|
||||
|
||||
cret := ""
|
||||
if !y.isVoid() {
|
||||
if !m.isVoid() {
|
||||
cret = "return "
|
||||
}
|
||||
var cobj string
|
||||
if y.ClassMethod {
|
||||
cobj = v.Name
|
||||
if m.ClassMethod {
|
||||
cobj = i.Name
|
||||
} else {
|
||||
cobj = "(id)obj"
|
||||
}
|
||||
|
|
@ -524,7 +608,7 @@ func (o *%s) %s(%s) %s%s {
|
|||
%s
|
||||
%s_%s(%s) {
|
||||
%s[%s %s];
|
||||
}`, cmtype, v.Name, y.Name, w.cparamlist(y), cret, cobj, y.objcparamlist()))
|
||||
}`, cmtype, i.Name, m.Name, w.cparamlist(m), cret, cobj, w.objcparamlist(m)))
|
||||
}
|
||||
}
|
||||
fmt.Println(`package main
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user