Merge pull request 'objt-bitfields' (#8) from objt-bitfields into main

Reviewed-on: sashakoshka/arf#8

parser/objt.go

@@ -96,6 +96,17 @@ func (parser *ParsingOperation) parseObjtMember () (
 	if err != nil { return }
 	member.what, err = parser.parseType()
 	if err != nil { return }
+
+	println(parser.token.Describe())
+	
+	// if there is a bit width, get it
+	if parser.token.Is(lexer.TokenKindBinaryAnd) {
+		err = parser.nextToken(lexer.TokenKindUInt)
+		if err != nil { return }
+		member.bitWidth = parser.token.Value().(uint64)
+		err = parser.nextToken()
+		if err != nil { return }
+	}
 	
 	// parse default value
 	if parser.token.Is(lexer.TokenKindNewline) {

parser/objt_test.go

@@ -9,6 +9,9 @@ func TestObjt (test *testing.T) {
 objt ro Basic:Obj
 	ro that:Basic
 	ro this:Basic
+objt ro BitFields:Obj
+	ro that:Int & 1
+	ro this:Int & 24 298
 objt ro ComplexInit:Obj
 	ro basic:Int 87
 	ro complex0:Bird

parser/tree-tostring.go

@@ -297,6 +297,10 @@ func (member ObjtMember) ToString (indent int) (output string) {
 	output += member.permission.ToString() + " "
 	output += member.name + ":"
 	output += member.what.ToString()
+
+	if member.bitWidth > 0 {
+		output += fmt.Sprint(" & ", member.bitWidth)
+	}
 	
 	isComplexInitialization :=
 		member.defaultValue.kind == ArgumentKindObjectInitializationValues ||

parser/tree.go

@@ -178,8 +178,9 @@ type TypeSection struct {
 type ObjtMember struct {
 	location file.Location
 	name     string
-	
+
 	what         Type
+	bitWidth     uint64
 	permission   types.Permission
 	defaultValue Argument
 }
@@ -188,7 +189,8 @@ type ObjtMember struct {
 type ObjtSection struct {
 	location file.Location
 	name     string
-	
+
+	// TODO: make this Identifier instead of Type
 	inherits     Type
 	permission   types.Permission
 	// TODO: order matters here we need to store these in an array
@@ -225,6 +227,7 @@ type FaceBehavior struct {
 type FaceSection struct {
 	location file.Location
 	name     string
+	// TODO: make this Identifier instead of string
 	inherits string
 	
 	permission types.Permission

tests/parser/objt/main.arf

@@ -4,6 +4,10 @@ objt ro Basic:Obj
 	ro that:Basic
 	ro this:Basic
 
+objt ro BitFields:Obj
+	ro that:Int & 1
+	ro this:Int & 24 298
+
 objt ro Init:Obj
 	ro that:String "hello world"
 	ro this:Int 23