Better handling of multiple classes and input files. Handle

Objective C type parameter declarations. Check Typedefs when
determining if a Type is a pointer or a function.

.gitignore

@@ -1,6 +1,8 @@
 clast
 ast.txt
 *.ast
-simple
-complex
 program
+examples/foundation/foundation
+examples/foundation/ns
+examples/simple/simple
+examples/simple/simple/ClassOne

ast/ast.go

@@ -212,6 +212,8 @@ func Parse(fullline string) Node {
 		return parseObjCProtocol(line)
 	case "ObjCPropertyDecl":
 		return parseObjCPropertyDecl(line)
+	case "ObjCTypeParamDecl":
+		return parseObjCTypeParamDecl(line)
 	case "OffsetOfExpr":
 		return parseOffsetOfExpr(line)
 	case "PackedAttr":

ast/objc_type_param_decl.go

@@ -0,0 +1,80 @@
+package ast
+
+import (
+	"strings"
+)
+
+// ObjCTypeParamDecl is node represents a parameter of variable declaration.
+type ObjCTypeParamDecl struct {
+	Addr         Address
+	Pos          Position
+	Position2    string
+	Name         string
+	Type         string
+	Type2        string
+	IsReferenced bool
+	IsCovariant  bool
+	IsBounded    bool
+	ChildNodes   []Node
+}
+
+func parseObjCTypeParamDecl(line string) *ObjCTypeParamDecl {
+	groups := groupsFromRegex(
+		`<(?P<position>.*)>
+		(?P<position2> [^ ]+:[\d:]+)?
+		(?P<referenced> referenced)?
+		(?P<name> \w+)?
+		(?P<covariant> covariant)?
+		(?P<bounded> bounded)?
+		 '(?P<type>.*?)'
+		(?P<type2>:'.*?')?
+		`,
+		line,
+	)
+
+	type2 := groups["type2"]
+	if type2 != "" {
+		type2 = type2[2 : len(type2)-1]
+	}
+
+	if strings.Index(groups["position"], "<invalid sloc>") > -1 {
+		groups["position"] = "<invalid sloc>"
+		groups["position2"] = "<invalid sloc>"
+	}
+
+	return &ObjCTypeParamDecl{
+		Addr:         ParseAddress(groups["address"]),
+	        Pos:          NewPositionFromString(groups["position"]),
+		Position2:    strings.TrimSpace(groups["position2"]),
+		Name:         strings.TrimSpace(groups["name"]),
+		Type:         groups["type"],
+		Type2:        type2,
+		IsReferenced: len(groups["referenced"]) > 0,
+		IsCovariant:  len(groups["covariant"]) > 0,
+		IsBounded  :  len(groups["bounded"]) > 0,
+		ChildNodes:   []Node{},
+	}
+}
+
+// AddChild adds a new child node. Child nodes can then be accessed with the
+// Children attribute.
+func (n *ObjCTypeParamDecl) AddChild(node Node) {
+	n.ChildNodes = append(n.ChildNodes, node)
+}
+
+// Address returns the numeric address of the node. See the documentation for
+// the Address type for more information.
+func (n *ObjCTypeParamDecl) Address() Address {
+	return n.Addr
+}
+
+// Children returns the child nodes. If this node does not have any children or
+// this node does not support children it will always return an empty slice.
+func (n *ObjCTypeParamDecl) Children() []Node {
+	return n.ChildNodes
+}
+
+// Position returns the position in the original source code.
+func (n *ObjCTypeParamDecl) Position() Position {
+	return n.Pos
+}

examples/foundation/main.go

@@ -0,0 +1,18 @@
+package main
+
+import "C"
+
+import (
+	"fmt"
+	"gitlab.wow.st/gmp/nswrap/examples/foundation/ns"
+)
+
+func main() {
+	fmt.Println("Started")
+	n := ns.StringWithUTF8String(ns.CharFromString("hi there"))
+	c := n.CapitalizedString()
+	gstring := c.UTF8String().String()
+	fmt.Println(gstring)
+	fmt.Println("ok")
+}
+

examples/foundation/nswrap.toml

@@ -0,0 +1,10 @@
+InputFiles = [
+    "/System/Library/Frameworks/Foundation.framework/Headers/NSDictionary.h",
+    "/System/Library/Frameworks/Foundation.framework/Headers/NSString.h",
+]
+Classes = [
+	"NSString",
+	"NSDictionary",
+]
+SysImports = [ "Foundation/Foundation.h" ]
+Pragma = [ 'clang diagnostic ignored "-Wformat-security"' ]

examples/simple/ClassOne/main.go

@@ -0,0 +1,103 @@
+package ClassOne
+
+/*
+#cgo CFLAGS: -x objective-c
+#cgo LDFLAGS: -framework Foundation
+
+#import "simple.h"
+
+ClassOne*
+NewClassOne() {
+	return [ClassOne alloc];
+}
+
+int
+ClassOne_geti1(void* obj) {
+	return [(id)obj geti1];
+}
+int*
+ClassOne_getp1(void* obj) {
+	return [(id)obj getp1];
+}
+int
+ClassOne_hi1(void* obj, struct stru in) {
+	return [(id)obj hi1:in];
+}
+int
+ClassOne_hi2(void* obj, void* in) {
+	return [(id)obj hi2:in];
+}
+struct stru
+ClassOne_nstru1(void* obj) {
+	return [(id)obj nstru1];
+}
+struct stru*
+ClassOne_nstru2(void* obj) {
+	return [(id)obj nstru2];
+}
+ClassOne*
+ClassOne_init(void* obj) {
+	return [(id)obj init];
+}
+*/
+import "C"
+
+import (
+	"unsafe"
+)
+
+//ClassOne*
+type ClassOne struct { NSObject }
+
+//NSObject*
+type NSObject struct { ptr unsafe.Pointer }
+
+//int
+type Int C.int
+
+//struct stru
+type Stru C.struct_stru
+
+func NewClassOne() *ClassOne {
+	ret := &ClassOne{}
+	ret.ptr = unsafe.Pointer(C.NewClassOne())
+	//ret = ret.Init()
+	return ret
+}
+
+func (o *ClassOne) Geti1() Int {
+	return (Int)(C.ClassOne_geti1(o.ptr))
+}
+
+
+func (o *ClassOne) Getp1() *Int {
+	return (*Int)(unsafe.Pointer(C.ClassOne_getp1(o.ptr)))
+}
+
+
+func (o *ClassOne) Hi1(in Stru) Int {
+	return (Int)(C.ClassOne_hi1(o.ptr, (C.struct_stru)(in)))
+}
+
+
+func (o *ClassOne) Hi2(in *Stru) Int {
+	return (Int)(C.ClassOne_hi2(o.ptr, unsafe.Pointer(in)))
+}
+
+
+func (o *ClassOne) Nstru1() Stru {
+	return (Stru)(C.ClassOne_nstru1(o.ptr))
+}
+
+
+func (o *ClassOne) Nstru2() *Stru {
+	return (*Stru)(unsafe.Pointer(C.ClassOne_nstru2(o.ptr)))
+}
+
+
+func (o *ClassOne) Init() *ClassOne {
+	ret := &ClassOne{}
+	ret.ptr = unsafe.Pointer(C.ClassOne_init(o.ptr))
+	return ret
+}
+

examples/simple/ClassOne/simple.h

@@ -0,0 +1,22 @@
+#import <Foundation/Foundation.h>
+
+struct stru {int a,b;};
+
+@interface ClassOne : NSObject
+{
+	int i1;
+	int *p1;
+	int a1[2];
+	int (*f)();
+}
+
+- (ClassOne*) init;
+- (int) geti1;
+- (int *) getp1;
+- (int (*)()) getf1;
+- (int) hi1:(struct stru)in;
+- (int) hi2:(struct stru*)in;
+- (struct stru) nstru1;
+- (struct stru*) nstru2;
+@end
+

examples/simple/ClassOne/simple.m

@@ -0,0 +1,59 @@
+#import "simple.h"
+
+@implementation ClassOne
+
+- (ClassOne*) init
+{
+	ClassOne *ret;
+	ret = [ClassOne alloc];
+	ret->i1 = 12;
+	ret->p1 = malloc(sizeof(int));
+	*ret->p1 = 16;
+	ret->a1[0] = 4;
+	ret ->a1[1] = 5;
+	return ret;
+}
+
+- (int) geti1
+{
+	return i1;
+}
+
+- (int *) getp1
+{
+	return p1;
+}
+
+- (int (*)()) getf1
+{
+	return f;
+}
+
+- (int) hi1:(struct stru)in
+{
+	return in.a;
+}
+
+- (int) hi2:(struct stru*)in
+{
+	return in->a;
+}
+
+- (struct stru) nstru1
+{
+	struct stru ret;
+	ret.a = 7;
+	ret.b = 8;
+	return ret;
+}
+- (struct stru*) nstru2
+{
+	struct stru* ret;
+	ret = malloc(sizeof(struct stru));
+	ret->a = 9;
+	ret->b = 10;
+	return ret;
+}
+
+@end
+

examples/simple/main.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"fmt"
+	"gitlab.wow.st/gmp/nswrap/examples/simple/ClassOne"
+)
+
+func main() {
+	o := ClassOne.NewClassOne().Init()
+	fmt.Println("i1 = ",o.Geti1())
+	fmt.Println("p1 = ",o.Getp1())
+	p1 := o.Getp1()
+	fmt.Println("*p1 = ", *p1)
+	*p1 = 17
+	fmt.Println("*p1 = ", *o.Getp1())
+	ns := o.Nstru1()
+	np := o.Nstru2()
+	fmt.Println(o.Hi1(ns))
+	fmt.Println(o.Hi2(np))
+}
+

examples/simple/nswrap.toml

@@ -0,0 +1,4 @@
+Package = "ClassOne"
+InputFiles = [ "ClassOne/simple.h" ]
+Classes = [ "ClassOne" ]
+Imports = [ "simple.h" ]

main.go

@@ -9,12 +9,14 @@ import (
 
 	"github.com/BurntSushi/toml"
 	"gitlab.wow.st/gmp/nswrap/ast"
+	"gitlab.wow.st/gmp/nswrap/types"
 	"gitlab.wow.st/gmp/nswrap/wrap"
 )
 
 var Debug = false
 
 type conf struct {
+	Package string
 	InputFiles []string
 	Classes []string
 	Imports []string
@@ -163,17 +165,22 @@ func Start() (err error) {
 
 	// build tree
 	tree := buildTree(nodes, 0)
-	unit := tree[0]
+	//unit := tree[0]
 	w := wrap.NewWrapper(Debug)
+	w.Package = Config.Package
 	w.Import(Config.Imports)
 	w.SysImport(Config.SysImports)
 	w.Pragma(Config.Pragma)
-	for _, n := range(unit.Children()) {
+	for _, u := range tree {
+		for _, n := range(u.Children()) {
 			switch x := n.(type) {
 			case *ast.ObjCInterfaceDecl:
 				w.AddInterface(x)
 			case *ast.ObjCCategoryDecl:
 				w.AddCategory(x)
+			case *ast.TypedefDecl:
+				types.AddTypedef(x.Name,x.Type)
+			}
 		}
 	}
 	w.Wrap(Config.Classes)
@@ -181,8 +188,8 @@ func Start() (err error) {
 }
 
 func main() {
-	if _, err := toml.DecodeFile("conf.toml",&Config); err != nil {
+	if _, err := toml.DecodeFile("nswrap.toml",&Config); err != nil {
-		fmt.Printf("Cannot open config file conf.toml.\n")
+		fmt.Printf("Cannot open config file nswrap.toml.\n")
 		os.Exit(-1)
 	}
 	if err := Start(); err != nil {

types/combinators.go

@@ -102,11 +102,6 @@ func NodeNamed(k string, p Parser) Parser {
 
 // Combinators
 
-//Id is the identity parser
-func Id(s string, n *Node) (string, *Node) {
-	return s,n
-}
-
 //Opt optionally runs a Parser, returning the input node if it fails
 func Opt(p Parser) Parser {
 	return func(s string, n *Node) (string, *Node) {

types/convert.go

@@ -12,6 +12,12 @@ var super map[string]string
 //go struct.
 var wrapped map[string]bool
 
+//TypeParameters maps, for each class, a TypedefName to a type, representing
+//the Objective-C type parameters for that class
+var TypeParameters map[string]map[string]string
+
+var Typedefs map[string]*Type
+
 func Super(c string) string {
 	if super == nil {
 		super = make(map[string]string)
@@ -26,6 +32,23 @@ func SetSuper(c, p string) {
 	super[c] = p
 }
 
+func SetTypeParam(c, n, t string) {
+	if TypeParameters == nil {
+		TypeParameters = make(map[string]map[string]string)
+	}
+	if TypeParameters[c] == nil {
+		TypeParameters[c] = make(map[string]string)
+	}
+	TypeParameters[c][n] = t
+}
+
+func AddTypedef(n,t string) {
+	if Typedefs == nil {
+		Typedefs = make(map[string]*Type)
+	}
+	Typedefs[n] = NewTypeFromString(t,"")
+}
+
 type Type struct {
 	Node *Node
 	Class string
@@ -42,12 +65,22 @@ func NewType(n *Node, c string) *Type {
 
 func NewTypeFromString(t,c string) *Type {
 	n,err := Parse(t)
-	if n.CtypeSimplified() == "id" {
+	if n.IsId() {
+	//if n.CtypeSimplified() == "id" {
 		n,err = Parse("NSObject*")
 	}
 	if err != nil {
 		return &Type{}
 	}
+	if TypeParameters[c] != nil {
+		recur := false
+		for k,v := range TypeParameters[c] {
+			recur = n.renameTypedefs(k,v)
+		}
+		if recur {
+			return NewTypeFromString(n.Ctype(),c)
+		}
+	}
 	return &Type{
 		Node: n,
 		Class: c,
@@ -117,19 +150,21 @@ func (t *Type) CTypeAttrib() string {
 }
 
 func (t *Type) _CType(attrib bool) string {
+	//if !attrib && c.ctype != "" ... FIXME?
 	if t.ctype != "" { // cache
 		return t.ctype
 	}
 	var ct string
 	if attrib {
-		ct = t.Node.Ctype()
+		ignore := map[string]bool { "GenericList": true }
+		ct = t.Node._Ctype(ignore)
 	} else {
 		ct = t.Node.CtypeSimplified()
 	}
 	ct = strings.ReplaceAll(ct,"instancename",t.Class)
 	ct = strings.ReplaceAll(ct,"instancetype",t.Class + " *")
 	if len(ct) > 1 && ct[:2] == "id" {
-		ct = "NSObject *" + ct[2:]
+		ct = "NSObject*" + ct[2:]
 	}
 	if len(ct) > 11 {
 		if ct[:12] == "instancename" { ct = t.Class + ct[12:] }
@@ -148,14 +183,18 @@ func (t *Type) GoTypeDecl() string {
 		return t.GoInterfaceDecl()
 	}
 	tp := t.BaseType()
+	if tp.Node.IsId() {
+		return ""
+	}
 	gt := tp.GoType()
 	switch gt {
 	case "", "Void":
 		return ""
 	default:
 		return fmt.Sprintf(`
+//%s
 type %s %s
-`,gt,tp.CGoType())
+`,t.Node.CtypeSimplified(),gt,tp.CGoType())
 	}
 }
 
@@ -170,12 +209,27 @@ func (t *Type) GoInterfaceDecl() string {
 		super = "ptr unsafe.Pointer"
 	}
 	return fmt.Sprintf(`
+//%s
 %stype %s struct { %s }
-`,x,gt,super)
+`,t.CTypeAttrib(),x,gt,super)
+}
+
+func (t *Type) IsFunction() bool {
+	if td,ok := Typedefs[t.BaseType().CType()]; ok {
+		return td.IsFunction()
+	}
+	return t.Node.IsFunction()
+}
+
+func (t *Type) IsPointer() bool {
+	if td,ok := Typedefs[t.BaseType().CType()]; ok {
+		return td.IsPointer()
+	}
+	return t.Node.IsPointer()
 }
 
 func (t *Type) CToGo(cval string) string { // cast C value to CGo
-	if t.Node.IsPointer() {
+	if t.IsPointer() {
 		cval = "unsafe.Pointer(" + cval + ")"
 	}
 	return fmt.Sprintf("(%s)(%s)",t.GoType(),cval)

types/cparser.go

@@ -30,6 +30,7 @@ func AbstractDeclarator(s string, n *Node) (string, *Node) {
 			Opt(Pointer),
 			OneOrMore(DirectAbstractDeclarator)),
 		Pointer,
+		Id,
 		Block,
 	)(s,n)
 }
@@ -136,6 +137,14 @@ func NullableAnnotation(s string, n *Node) (string, *Node) {
 	))(s,n)
 }
 
+func Id(s string, n *Node) (string, *Node) {
+	return Seq(
+		NodeNamed("Id",Lit("id")),
+		Opt(TypeQualifierList),
+		Opt(NullableAnnotation),
+	)(s,n)
+}
+
 func Pointer(s string, n *Node) (string, *Node) {
 	return Seq(
 		NodeNamed("Pointer",Lit("*")),

types/main.go

@@ -96,7 +96,7 @@ func (n *Node) PointsTo() *Node {
 
 //IsPointer returns true if the node is a pointer
 func (n *Node) IsPointer() bool {
-	return n.PointsTo() != nil
+	return n.IsId() || n.PointsTo() != nil
 }
 
 //ArrayOf, when called on an array node returns a node describing the type
@@ -126,6 +126,13 @@ func (n *Node) IsFunction() bool {
 	return n.Children[len(n.Children)-1].Kind == "Function"
 }
 
+func (n *Node) IsId() bool {
+	if n == nil || len(n.Children) < 1 {
+		return false
+	}
+	return n.Children[0].Kind == "TypedefName" && n.Children[0].Content == "id"
+}
+
 //BaseType strips off all layers of pointer indirection
 func (n *Node) BaseType() *Node {
 	if n == nil {

types/node.go

@@ -67,6 +67,24 @@ func (n *Node) AddChild(c *Node) *Node {
 	return n
 }
 
+//returns true if anything gets renamed
+func (n *Node) renameTypedefs(a,b string) (ret bool) {
+	ret = false
+	if n == nil { return }
+	for i,c := range n.Children {
+		if c.Kind == "TypedefName" && c.Content == a {
+			ret = true
+			n.Children[i] = NewNode("TypedefName", b)
+			n.Children[i].Children = c.Children
+		}
+		if len(c.Children) > 0 {
+			ret2 := c.renameTypedefs(a,b)
+			ret = ret || ret2
+		}
+	}
+	return
+}
+
 func (n *Node) CtypeSimplified() string {
 	ignore := map[string]bool{
 		"NullableAnnotation": true,

wrap/main.go

@@ -2,6 +2,8 @@ package wrap
 
 import (
 	"fmt"
+	"os"
+	"path"
 	"strings"
 
 	"gitlab.wow.st/gmp/nswrap/ast"
@@ -13,6 +15,7 @@ var (
 )
 
 type Wrapper struct {
+	Package string
 	Interfaces map[string]Interface
 
 	cCode strings.Builder	  // put cGo code here
@@ -81,7 +84,7 @@ func (m Method) isVoid() bool {
 //hasFunctionParam() returns true if a method has a function as a parameter.
 func (m Method) hasFunctionParam() bool {
 	for _,p := range m.Parameters {
-		if p.Type.Node.IsFunction() {
+		if p.Type.IsFunction() {
 			return true
 		}
 	}
@@ -224,6 +227,9 @@ func (w *Wrapper) add(name string, ns []ast.Node) {
 				//fmt.Printf("ast.ObjCInterface: %s inherits from %s\n",name,x.Name)
 				types.SetSuper(name,x.Name)
 			}
+		case *ast.ObjCTypeParamDecl:
+			//fmt.Printf("ObjCTypeParamDecl: %s = %s\n",x.Name,x.Type)
+			types.SetTypeParam(name,x.Name,x.Type)
 		case *ast.Unknown:
 			//fmt.Printf("(*ast.Unkonwn %s: %s)\n",x.Name,x.Content)
 		default:
@@ -312,7 +318,7 @@ func (w *Wrapper) processType(tp *types.Type) {
 	bt := tp.BaseType()
 	if w.Processed[bt.GoType()] { return }
 	w.Processed[bt.GoType()] = true
-	if bt.Node.IsFunction() {
+	if bt.IsFunction() {
 		return
 	}
 	w.goTypes.WriteString(tp.GoTypeDecl())
@@ -345,17 +351,26 @@ func (c *Char) String() string {
 
 
 func (w *Wrapper) Wrap(toproc []string) {
-
+	if w.Package == "" { w.Package = "ns" }
+	err := os.MkdirAll(w.Package,0755)
+	if err != nil {
+		fmt.Printf("Error creating directory '%s'\n%s\n",w.Package,err)
+		os.Exit(-1)
+	}
+	of,err := os.Create(path.Join(w.Package,"main.go"))
+	if err != nil {
+		fmt.Printf("Error opening file %s\n%s\n",path.Join(w.Package,"main.go"),err)
+		os.Exit(-1)
+	}
+	fmt.Printf("Writing output to %s\n",path.Join(w.Package,"main.go"))
 	pInterfaces := map[string]Interface{}
 	for _,iface := range toproc {
 		pInterfaces[iface] = w.Interfaces[iface]
 	}
 	//FIXME: sort pInterfaces
-	for iname,i := range pInterfaces {
+	for _,i := range pInterfaces {
-		if Debug {
 		fmt.Printf("Interface %s: %d properties, %d methods\n",
-			iname, len(i.Properties), len(i.Methods))
+			i.Name, len(i.Properties), len(i.Methods))
-		}
 
 		w.goCode.WriteString(fmt.Sprintf(`
 func New%s() *%s {
@@ -384,16 +399,14 @@ New%s() {
 			if Debug {
 				fmt.Printf("  method: %s (%s)\n", m.Name, m.Type)
 			}
-			if m.Type.Node.IsFunction() {
+			if m.Type.IsFunction() {
 				continue
 			}
 			if m.hasFunctionParam() {
 				continue
 			}
 			gname := strings.Title(m.Name)
-			if m.ClassMethod {
+			if !m.ClassMethod {
-				gname = i.Name + gname
-			} else {
 				gname = "(o *" + i.Name + ") " + gname
 			}
 			cname := i.Name + "_" + m.Name
@@ -429,10 +442,9 @@ func %s(%s) %s {
 }`, cmtype, cname, w.cparamlist(m), cret, cobj, w.objcparamlist(m)))
 		}
 	}
-	fmt.Println(`package main
+	of.WriteString("package " + w.Package + "\n\n")
-`)
+	of.WriteString(w.cCode.String())
-	fmt.Println(w.cCode.String())
+	of.WriteString(`
-	fmt.Println(`
 */
 import "C"
 
@@ -440,7 +452,8 @@ import (
 	"unsafe"
 )
 `)
-	fmt.Println(w.goTypes.String())
+	of.WriteString(w.goTypes.String())
-	fmt.Println(w.goHelpers.String())
+	of.WriteString(w.goHelpers.String())
-	fmt.Println(w.goCode.String())
+	of.WriteString(w.goCode.String())
+	of.Close()
 }