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nswrap
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Handle functions identified by regexp in nswrap.toml config 

file. Handle inherited class methods.
This commit is contained in:
Greg 2019-05-01 10:58:29 -04:00
parent 380fee39bf
commit be92b200ad
7 changed files with 308 additions and 104 deletions
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13
examples/foundation/main.go
View File

@ -8,14 +8,19 @@ import (
)
func main() {
n1 := ns.StringWithUTF8String(ns.CharFromString("hi there"))
n1 := ns.NSStringStringWithUTF8String(ns.CharFromString("hi there"))
c1 := n1.CapitalizedString()
gs := c1.UTF8String().String()
fmt.Println(gs)
n2 := ns.StringWithUTF8String(ns.CharFromString("hi world"))
n3 := ns.StringWithUTF8String(ns.CharFromString("ok bye"))
a := ns.ArrayWithObjects(n1,n2,n3)
n2 := ns.NSStringStringWithUTF8String(ns.CharFromString("hi world"))
n3 := ns.NSStringStringWithUTF8String(ns.CharFromString("ok bye"))
a := ns.NSMutableArrayArrayWithObjects(n1,n2,n3)
fmt.Println("Length(a) = ",a.Count())
fmt.Println("is n2 in a?",a.ContainsObject(n2))
fmt.Println("is c1 in a?",a.ContainsObject(c1))
n4 := n2.SubstringFromIndex(3)
n5 := n3.SubstringToIndex(4)
a.AddObject(n4)
a.AddObject(n5)
fmt.Println("Length(a) = ",a.Count())
}

4
examples/foundation/nswrap.toml
View File

@ -3,6 +3,7 @@ InputFiles = [
]
Classes = [
"NSArray",
"NSMutableArray",
"NSDictionary",
"NSSet",
"NSDate",
@ -14,6 +15,9 @@ Classes = [
"NSScanner",
"NSFileManager",
]
Functions = [
"NSMakeRange",
]
SysImports = [ "Foundation/Foundation.h" ]
Pragma = [ 'clang diagnostic ignored "-Wformat-security"' ]
VaArgs = 32

15
main.go
View File

@ -4,6 +4,7 @@ import (
"fmt"
"os"
"os/exec"
"regexp"
"runtime"
"strings"
@ -19,6 +20,7 @@ type conf struct {
Package string
InputFiles []string
Classes []string
Functions []string
Imports []string
SysImports []string
Pragma []string
@ -134,6 +136,15 @@ func buildTree(nodes []treeNode, depth int) []ast.Node {
return results
}
func matches(x string, rs []string) bool {
for _,r := range rs {
if m, _ := regexp.MatchString("^" + r + "$",x); m {
return true
}
}
return false
}
// Start begins transpiling an input file.
func Start() (err error) {
// 1. Compile it first (checking for errors)
@ -185,6 +196,10 @@ func Start() (err error) {
w.AddCategory(x)
case *ast.TypedefDecl:
types.AddTypedef(x.Name,x.Type)
case *ast.FunctionDecl:
if matches(x.Name,Config.Functions) {
w.AddFunction(x)
}
}
}
}

72
types/convert.go
View File

@ -2,6 +2,7 @@ package types
import (
"fmt"
"regexp"
"strings"
)
@ -36,12 +37,22 @@ func (t *Type) Typedef() *Type {
return typedefs[t.CType()]
}
var (
r_id *regexp.Regexp
r_instancename *regexp.Regexp
r_instancetype *regexp.Regexp
)
func init() {
super = make(map[string]string)
wrapped = make(map[string]bool)
goInterfaces = make(map[string]bool)
TypeParameters = make(map[string]map[string]string)
typedefs = make(map[string]*Type)
r_id = regexp.MustCompile("\bid\b")
r_instancename = regexp.MustCompile(`\binstancename\b`)
r_instancetype = regexp.MustCompile(`\binstancetype\b`)
}
func Super(c string) string {
@ -71,6 +82,14 @@ type Type struct {
Variadic bool
}
func (t *Type) CloneToClass(c string) *Type {
return &Type{
Node: t.Node,
Class: c,
Variadic: t.Variadic,
}
}
func clean(n *Node,c string) (*Node,bool) {
if n == nil {
return nil,false
@ -84,8 +103,8 @@ func clean(n *Node,c string) (*Node,bool) {
recur = ret.renameTypedefs(k,v)
}
}
recur = recur || ret.renameTypedefs("instancename",c)
recur = recur || ret.renameTypedefs("instancetype",c + "*")
// recur = recur || ret.renameTypedefs("instancename",c)
// recur = recur || ret.renameTypedefs("instancetype",c + "*")
if recur {
clean(n, c)
return ret,true
@ -127,7 +146,14 @@ func (t *Type) String() string {
}
func (t *Type) PointsTo() *Type {
return NewType(t.Node.PointsTo(), t.Class)
if td := t.Typedef(); td != nil {
return td.PointsTo()
}
if pt := t.Node.PointsTo(); pt != nil {
return NewType(t.Node.PointsTo(), t.Class)
} else {
return nil
}
}
func Wrap(s string) {
@ -136,6 +162,9 @@ func Wrap(s string) {
}
func (t *Type) BaseType() *Type {
if t == nil {
return nil
}
ret := NewType(
t.Node.BaseType(),
t.Class,
@ -172,10 +201,12 @@ func _goType(ct string) string {
if len(ct) > 0 && ct[0] == '*' && isGoInterface(ct[1:]) {
return ct[1:]
}
if ct == "Id" {
ct = "*Id"
}
return ct
}
func (t *Type) CType() string {
return t._CType(false)
}
@ -185,6 +216,10 @@ func (t *Type) CTypeAttrib() string {
}
func (t *Type) _CType(attrib bool) string {
if t == nil {
fmt.Println("nil sent to _CType()")
return ""
}
//if !attrib && c.ctype != "" ... FIXME?
if t.ctype != "" { // cache
return t.ctype
@ -196,9 +231,9 @@ func (t *Type) _CType(attrib bool) string {
} else {
ct = t.Node.CtypeSimplified()
}
if len(ct) > 1 && ct[:2] == "id" {
ct = "NSObject*" + ct[2:]
}
ct = r_id.ReplaceAllString(ct,"NSObject*")
ct = r_instancename.ReplaceAllString(ct,t.Class)
ct = r_instancetype.ReplaceAllString(ct,t.Class + "*")
if attrib {
t._CType(false)
} else {
@ -261,12 +296,23 @@ func (o *%s) Ptr() unsafe.Pointer { return unsafe.Pointer(o) }
}
func (t *Type) IsFunction() bool {
if t == nil {
fmt.Println("nil sent to IsFunction()")
return false
}
if td := t.Typedef(); td != nil {
return td.IsFunction()
}
return t.Node.IsFunction()
}
func (t *Type) ReturnType() *Type {
if rt := t.Node.ReturnType(); rt != nil {
return NewType(rt,t.Class)
}
return nil
}
func (t *Type) IsPointer() bool {
if td := t.Typedef(); td != nil {
return td.IsPointer()
@ -283,6 +329,10 @@ func (t *Type) CToGo(cval string) string { // cast C value to CGo
// Call a C function from Go with a given return type and parameter types
func GoToC(name string, pnames []string, rtype *Type, ptypes []*Type) string {
if rtype == nil {
fmt.Println("nil sent to GoToC")
return ""
}
var ret strings.Builder
rt := rtype.CType()
if rt != "void" {
@ -290,8 +340,8 @@ func GoToC(name string, pnames []string, rtype *Type, ptypes []*Type) string {
if isGoInterface(rtgt) {
rtgt = "*Id"
}
ret.WriteString(" return (" + rtgt + ")(")
if rtype.Node.IsPointer() {
ret.WriteString("return (" + rtgt + ")(")
if rtype.IsPointer() {
ret.WriteString("unsafe.Pointer(")
}
}
@ -306,7 +356,7 @@ func GoToC(name string, pnames []string, rtype *Type, ptypes []*Type) string {
switch {
case pt.Variadic:
p = "unsafe.Pointer(&" + p + ")"
case pt.Node.IsPointer():
case pt.IsPointer():
p = "unsafe.Pointer(" + pn + ")"
default:
p = "(" + pt.CGoType() + ")(" + pn + ")"
@ -318,7 +368,7 @@ func GoToC(name string, pnames []string, rtype *Type, ptypes []*Type) string {
ret.WriteString(")")
if rt != "void" {
ret.WriteString(")")
if rtype.Node.IsPointer() {
if rtype.IsPointer() {
ret.WriteString(")")
}
ret.WriteString("\n")

2
types/cparser.go
View File

@ -110,7 +110,7 @@ func AbstractDeclarator(s string, n *Node) (string, *Node) {
Opt(Pointer),
OneOrMore(DirectAbstractDeclarator)),
Pointer,
Id,
//Id,
Block,
)(s,n)
}

22
types/main.go
View File

@ -97,7 +97,7 @@ func (n *Node) PointsTo() *Node {
//IsPointer returns true if the node is a pointer
func (n *Node) IsPointer() bool {
return n.IsId() || n.PointsTo() != nil
return n.IsId() || n.IsInstancetype() || n.PointsTo() != nil
}
//ArrayOf, when called on an array node returns a node describing the type
@ -127,11 +127,29 @@ func (n *Node) IsFunction() bool {
return n.Children[len(n.Children)-1].Kind == "Function"
}
func (n *Node) ReturnType() *Node {
if !n.IsFunction() {
return nil
}
ret := NewNode(n.Kind)
ret.Children = n.Children[:len(n.Children)-1]
return ret
}
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"
return n.Children[0].Kind == "TypedefName" &&
n.Children[0].Content == "id"
}
func (n *Node) IsInstancetype() bool {
if n == nil || len(n.Children) < 1 {
return false
}
return n.Children[0].Kind == "TypedefName" &&
n.Children[0].Content == "instancetype"
}
//BaseType strips off all layers of pointer indirection

284
wrap/main.go
View File

@ -17,7 +17,8 @@ var (
type Wrapper struct {
Package string
Interfaces map[string]Interface
Interfaces map[string]*Interface
Functions map[string]*Method
cCode strings.Builder // put cGo code here
goTypes strings.Builder // put Go type declarations here
@ -31,7 +32,8 @@ func NewWrapper(debug bool) *Wrapper {
Debug = debug
if Debug { fmt.Println("// Debug mode") }
ret := &Wrapper{
Interfaces: map[string]Interface{},
Interfaces: map[string]*Interface{},
Functions: map[string]*Method{},
Processed: map[string]bool{},
VaArgs: 16,
}
@ -80,7 +82,7 @@ type Method struct {
Name, Class string
Type *types.Type
ClassMethod bool
Parameters []Parameter
Parameters []*Parameter
}
//isVoid() returns true if the method has no return value.
@ -98,24 +100,26 @@ func (m Method) hasFunctionParam() bool {
return false
}
func (w Wrapper) cparamlist(m Method) string {
func (w Wrapper) cparamlist(m *Method) (string,string) {
ns := make([]string,0)
ret := make([]string,0)
if !m.ClassMethod {
ret = append(ret,"void* obj")
ret = append(ret,"void* o")
}
for _,p := range m.Parameters {
var tp string
if p.Type.Node.IsPointer() || p.Type.Variadic {
if p.Type.IsPointer() || p.Type.Variadic {
tp = "void*"
} else {
tp = p.Type.CType()
}
ns = append(ns,p.Vname)
ret = append(ret,fmt.Sprintf("%s %s",tp,p.Vname))
}
return strings.Join(ret,", ")
return strings.Join(ns,", "),strings.Join(ret,", ")
}
func (w Wrapper) objcparamlist(m Method) string {
func (w Wrapper) objcparamlist(m *Method) string {
if len(m.Parameters) == 0 {
return m.Name
}
@ -182,8 +186,8 @@ func (m *Method) gpntp() ([]string,[]*types.Type,string) {
type Interface struct {
Name string
Properties map[string]Property
Methods map[string]Method
Properties map[string]*Property
Methods map[string]*Method
}
func (w *Wrapper) AddInterface(n *ast.ObjCInterfaceDecl) {
@ -203,14 +207,52 @@ func (w *Wrapper) AddCategory(n *ast.ObjCCategoryDecl) {
fmt.Printf("Not adding methods for %s: interface name not found in first child node of category defclaration\n",n.Name)
}
func (w *Wrapper) AddFunction(n *ast.FunctionDecl) {
//treat functions as class methods with no class
tp := types.NewTypeFromString(n.Type,"")
m := &Method{
Name: n.Name,
Type: tp.ReturnType(),
Class: "",
ClassMethod: true,
Parameters: []*Parameter{},
}
f := tp.Node.Children[len(tp.Node.Children)-1] // Function node
if f.Kind != "Function" {
//fmt.Printf("AddFunction(%s): not a function -- Node type is %s\n%s",n.Name,f.Kind,tp.String())
return
}
//fmt.Printf("FunctionDecl: %s (%s) %s\n",n.Type,m.Type.CType(),n.Name)
i := 0
for _,c := range n.Children() {
switch x := c.(type) {
case *ast.ParmVarDecl:
p := &Parameter{
Vname: x.Name,
Type: types.NewTypeFromString(x.Type,""),
}
m.Parameters = append(m.Parameters,p)
i++
//fmt.Printf(" %s\n",p.Type.CType())
}
}
if i > 0 && len(f.Children) > i {
if e := f.Children[i]; len(e.Children) > 0 {
//fmt.Println(" Next parameter: ",e.Children[0].String())
m.Parameters[i-1].Type.Variadic = true
}
}
w.Functions[n.Name] = m
}
func (w *Wrapper) add(name string, ns []ast.Node) {
var i Interface
var i *Interface
var ok bool
if i,ok = w.Interfaces[name]; !ok {
i = Interface{
i = &Interface{
Name: name,
Properties: map[string]Property{},
Methods: map[string]Method{},
Properties: map[string]*Property{},
Methods: map[string]*Method{},
}
}
tp := types.NewTypeFromString(name,name)
@ -220,7 +262,7 @@ func (w *Wrapper) add(name string, ns []ast.Node) {
switch x := c.(type) {
case *ast.ObjCPropertyDecl:
//fmt.Printf("ObjCPropertyDecl: %s\n",x.Name)
p := Property{
p := &Property{
Name: x.Name,
Type: types.NewTypeFromString(x.Type,name),
}
@ -230,7 +272,7 @@ func (w *Wrapper) add(name string, ns []ast.Node) {
//}
case *ast.ObjCMethodDecl:
//fmt.Printf("ObjCMethodDecl: %s (%s) %s\n",x.Type,name,x.Name)
m := Method{
m := &Method{
Name: x.Name,
Type: types.NewTypeFromString(x.Type,name),
Class: name,
@ -257,6 +299,37 @@ func (w *Wrapper) add(name string, ns []ast.Node) {
//fmt.Println(reflect.TypeOf(x))
}
}
//Add class methods from super class
var supmethods func(*Interface,string)
supmethods = func(i *Interface, s string) {
if sup,ok := w.Interfaces[s]; !ok {
return
} else {
for _,m := range sup.Methods {
if !m.ClassMethod {
continue
}
m2 := &Method{
Name: m.Name,
Class: i.Name,
Type: m.Type.CloneToClass(i.Name),
ClassMethod: true,
Parameters: []*Parameter{},
}
for _,p := range m.Parameters {
m2.Parameters = append(m2.Parameters,
&Parameter{
Pname: p.Pname,
Vname: p.Vname,
Type: p.Type.CloneToClass(i.Name),
})
}
i.Methods[m.Name] = m2
}
}
supmethods(i,types.Super(s))
}
supmethods(i,types.Super(i.Name))
//fmt.Println("Add interface ",i.Name)
w.Interfaces[i.Name] = i
}
@ -269,18 +342,28 @@ type AvailAttr struct {
//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)
func (w *Wrapper) GetParms(n ast.Node,class string) ([]*Parameter,bool) {
ret := make([]*Parameter,0)
avail := make([]AvailAttr,0)
var parms []string
switch x := n.(type) {
case *ast.ObjCMethodDecl:
parms = x.Parameters
case *ast.FunctionDecl:
default:
panic("GetParms called with wrong node type")
}
j := 0
for _,c := range n.Children() {
switch x := c.(type) {
case *ast.ParmVarDecl:
p := Parameter{
Pname: n.Parameters[j],
p := &Parameter{
Vname: x.Name,
Type: types.NewTypeFromString(x.Type,class),
}
if parms != nil {
p.Pname = parms[j]
}
ret = append(ret,p)
j++
case *ast.Variadic:
@ -316,9 +399,9 @@ func (w *Wrapper) GetParms(n *ast.ObjCMethodDecl,class string) ([]Parameter,bool
return nil, false
}
// check that we found the right number of parameters
if len(ret) != len(n.Parameters) {
fmt.Printf("Error in method declaration %s: Wrong number of ParmVarDecl children: %d parameters but %d ParmVarDecl children\n",n.Name,len(n.Parameters),len(ret))
}
//if len(ret) != len(n.Parameters) {
// fmt.Printf("Error in method declaration %s: Wrong number of ParmVarDecl children: %d parameters but %d ParmVarDecl children\n",n.Name,len(n.Parameters),len(ret))
//}
return ret, true
}
@ -378,6 +461,91 @@ func (c *Char) String() string {
`)
}
func (w *Wrapper) ProcessMethod(m *Method) {
w._processMethod(m,false)
}
func (w *Wrapper) ProcessFunction(m *Method) {
w._processMethod(m,true)
}
func (w *Wrapper) _processMethod(m *Method,fun bool) {
if Debug {
fmt.Printf(" method: %s (%s)\n", m.Name, m.Type)
}
if m.Type.IsFunction() || m.hasFunctionParam() {
return
}
gname := strings.Title(m.Name)
if !m.ClassMethod {
gname = "(o *" + m.Class + ") " + gname
} else {
gname = m.Class + gname
}
cname := m.Name
if m.Class != "" {
cname = m.Class + "_" + cname
}
cmtype := m.Type.CTypeAttrib()
ns,tps,gplist := m.gpntp()
w.processTypes(tps)
w.processType(m.Type)
grtype := m.Type.GoType()
if grtype == "Void" {
grtype = ""
}
w.goCode.WriteString(fmt.Sprintf(`
//%s
func %s(%s) %s {
`,m.Type.CType(),gname,gplist,grtype))
lparm := len(tps)-1
if len(tps) > 0 && tps[lparm].Variadic {
vn := ns[lparm]
vn = vn[:len(vn)-1]
ns[lparm] = vn
w.goCode.WriteString(fmt.Sprintf(
` var %s [%d]unsafe.Pointer
for i,o := range %ss {
%s[i] = o.Ptr()
}
`,vn,w.VaArgs,vn,vn))
}
w.goCode.WriteString(` ` +
types.GoToC(cname,ns,m.Type,tps) + "\n}\n\n")
cret := ""
if !m.isVoid() {
cret = "return "
}
var cobj string
if m.ClassMethod {
cobj = m.Class
} else {
cobj = "(id)o"
}
cns,cntps := w.cparamlist(m)
_ = cns
if fun {
return
}
w.cCode.WriteString(fmt.Sprintf(`
%s
%s(%s) {
`, cmtype, cname, cntps))
if len(tps) > 0 && tps[lparm].Variadic {
w.cCode.WriteString(fmt.Sprintf(
` %s* arr = %s;
`, tps[lparm].CType(), ns[lparm]))
}
if fun {
w.cCode.WriteString(fmt.Sprintf(` %s%s(%s);
}`, cret, m.Name, cns))
} else {
w.cCode.WriteString(fmt.Sprintf(` %s[%s %s];
}`, cret, cobj, w.objcparamlist(m)))
}
}
func (w *Wrapper) Wrap(toproc []string) {
if w.Package == "" { w.Package = "ns" }
@ -392,7 +560,7 @@ func (w *Wrapper) Wrap(toproc []string) {
os.Exit(-1)
}
fmt.Printf("Writing output to %s\n",path.Join(w.Package,"main.go"))
pInterfaces := map[string]Interface{}
pInterfaces := map[string]*Interface{}
for _,iface := range toproc {
pInterfaces[iface] = w.Interfaces[iface]
}
@ -422,71 +590,15 @@ New%s() {
}
//FIXME: sort methods
for _,m := range i.Methods {
if Debug {
fmt.Printf(" method: %s (%s)\n", m.Name, m.Type)
}
if m.Type.IsFunction() {
continue
}
if m.hasFunctionParam() {
continue
}
gname := strings.Title(m.Name)
if !m.ClassMethod {
gname = "(o *" + i.Name + ") " + gname
}
cname := i.Name + "_" + m.Name
w.ProcessMethod(m)
cmtype := m.Type.CTypeAttrib()
ns,tps,gplist := m.gpntp()
w.processTypes(tps)
w.processType(m.Type)
grtype := m.Type.GoType()
if grtype == "Void" {
grtype = ""
}
w.goCode.WriteString(fmt.Sprintf(`
//%s
func %s(%s) %s {
`,m.Type.CType(),gname,gplist,grtype))
lparm := len(tps)-1
if len(tps) > 0 && tps[lparm].Variadic {
vn := ns[lparm]
vn = vn[:len(vn)-1]
ns[lparm] = vn
w.goCode.WriteString(fmt.Sprintf(
` var %s [%d]unsafe.Pointer
for i,o := range %ss {
%s[i] = o.Ptr()
}
`,vn,w.VaArgs,vn,vn))
}
w.goCode.WriteString(
types.GoToC(cname,ns,m.Type,tps) + "}\n\n")
cret := ""
if !m.isVoid() {
cret = "return "
}
var cobj string
if m.ClassMethod {
cobj = i.Name
} else {
cobj = "(id)obj"
}
w.cCode.WriteString(fmt.Sprintf(`
%s
%s(%s) {
`, cmtype, cname, w.cparamlist(m)))
if len(tps) > 0 && tps[lparm].Variadic {
w.cCode.WriteString(fmt.Sprintf(
` %s* arr = %s;
`, tps[lparm].CType(), ns[lparm]))
}
w.cCode.WriteString(fmt.Sprintf(` %s[%s %s];
}`, cret, cobj, w.objcparamlist(m)))
}
}
for _,m := range w.Functions {
//fmt.Printf("Processing function %s %s\n",m.Type.CType(),m.Name)
w.ProcessFunction(m)
}
fmt.Printf("%d functions\n", len(w.Functions))
of.WriteString("package " + w.Package + "\n\n")
of.WriteString(w.cCode.String())
of.WriteString(`