Add base enum parsing method

parser/body.go

@@ -40,6 +40,14 @@ func (parser *ParsingOperation) parseBody () (err error) {
 			if err != nil { return }
 		case "face":
 		case "enum":
+			var section *EnumSection
+			section, err = parser.parseEnumSection()
+			if parser.tree.enumSections == nil {
+				parser.tree.enumSections =
+					make(map[string] *EnumSection)
+			}
+			parser.tree.enumSections[section.name] = section
+			if err != nil { return }
 		case "func":
 		default:
 			err = parser.token.NewError (

parser/enum.go

@@ -0,0 +1,52 @@
+package parser
+
+import "git.tebibyte.media/sashakoshka/arf/types"
+import "git.tebibyte.media/sashakoshka/arf/lexer"
+import "git.tebibyte.media/sashakoshka/arf/infoerr"
+
+func (parser *ParsingOperation) parseEnumSection () (
+	section *EnumSection,
+	err     error,
+) {
+	err = parser.expect(lexer.TokenKindName)
+	if err != nil { return }
+	
+	section = &EnumSection {
+		location: parser.token.Location(),
+		members:  make(map[string] Argument),
+	}
+
+	// get permission
+	err = parser.nextToken(lexer.TokenKindPermission)
+	if err != nil { return }
+	section.permission = parser.token.Value().(types.Permission)
+
+	// get name
+	err = parser.nextToken(lexer.TokenKindName)
+	if err != nil { return }
+	section.name = parser.token.Value().(string)
+
+	// parse inherited type
+	err = parser.nextToken(lexer.TokenKindColon)
+	if err != nil { return }
+	err = parser.nextToken()
+	if err != nil { return }
+	section.what, err = parser.parseType()
+	if err != nil { return }
+	err = parser.expect(lexer.TokenKindNewline)
+	if err != nil { return }
+	err = parser.nextToken()
+	if err != nil { return }
+
+	// parse members
+	err = parser.parseEnumMembers(section)
+	if err != nil { return }
+	
+	if len(section.members) == 0 {
+		infoerr.NewError (
+			section.location,
+			"defining an enum with no members",
+			infoerr.ErrorKindWarn).Print()
+	}
+	return
+}