Fix parsing API with removed CRC for types and unions

- method GetCrcString() was also removed from DataType interface
- fix generated comment for services
- fix permissions for created files and directories

Change-Id: If0b7a57e01f1128b5ba574fc5ee13b6a7c6aa6fd
Signed-off-by: Ondrej Fabry <ofabry@cisco.com>

3 files changed, 27 insertions, 15 deletions

diff --git a/cmd/binapi-generator/generate.go b/cmd/binapi-generator/generate.go
index d9555e7..1ff3e4c 100644
--- a/cmd/binapi-generator/generate.go
+++ b/cmd/binapi-generator/generate.go
@@ -256,7 +256,7 @@ func generateImports(ctx *context, w io.Writer) {
 // generateComment writes generated comment for the object into w
 func generateComment(ctx *context, w io.Writer, goName string, vppName string, objKind string) {
 	if objKind == "service" {
-		fmt.Fprintf(w, "// %s represents VPP binary API services in %s module.\n", ctx.moduleName, goName)
+		fmt.Fprintf(w, "// %s represents VPP binary API services in %s module.\n", goName, ctx.moduleName)
 	} else {
 		fmt.Fprintf(w, "// %s represents VPP binary API %s '%s':\n", goName, objKind, vppName)
 	}
@@ -497,7 +497,9 @@ func generateUnion(ctx *context, w io.Writer, union *Union) {
 	generateTypeNameGetter(w, name, union.Name)
 
 	// generate CRC getter
-	generateCrcGetter(w, name, union.CRC)
+	if union.CRC != "" {
+		generateCrcGetter(w, name, union.CRC)
+	}
 
 	// generate getters for fields
 	for _, field := range union.Fields {
@@ -589,7 +591,9 @@ func generateType(ctx *context, w io.Writer, typ *Type) {
 	generateTypeNameGetter(w, name, typ.Name)
 
 	// generate CRC getter
-	generateCrcGetter(w, name, typ.CRC)
+	if typ.CRC != "" {
+		generateCrcGetter(w, name, typ.CRC)
+	}
 
 	fmt.Fprintln(w)
 }
diff --git a/cmd/binapi-generator/main.go b/cmd/binapi-generator/main.go
index 75926e1..d221317 100644
--- a/cmd/binapi-generator/main.go
+++ b/cmd/binapi-generator/main.go
@@ -62,9 +62,17 @@ func main() {
 		}
 	} else {
 		// process all files in specified directory
+		dir, err := filepath.Abs(*inputDir)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "ERROR: invalid input directory: %v\n", err)
+			os.Exit(1)
+		}
 		files, err := getInputFiles(*inputDir)
 		if err != nil {
-			fmt.Fprintf(os.Stderr, "ERROR: code generation failed: %v\n", err)
+			fmt.Fprintf(os.Stderr, "ERROR: problem getting files from input directory: %v\n", err)
+			os.Exit(1)
+		} else if len(files) == 0 {
+			fmt.Fprintf(os.Stderr, "ERROR: no input files found in input directory: %v\n", dir)
 			os.Exit(1)
 		}
 		for _, file := range files {
@@ -134,7 +142,7 @@ func generateFromFile(inputFile, outputDir string) error {
 
 	// create output directory
 	packageDir := filepath.Dir(ctx.outputFile)
-	if err := os.MkdirAll(packageDir, 06); err != nil {
+	if err := os.MkdirAll(packageDir, 0775); err != nil {
 		return fmt.Errorf("creating output dir %s failed: %v", packageDir, err)
 	}
 	// write generated code to output file
diff --git a/cmd/binapi-generator/parse.go b/cmd/binapi-generator/parse.go
index 562abab..602b17f 100644
--- a/cmd/binapi-generator/parse.go
+++ b/cmd/binapi-generator/parse.go
@@ -274,9 +274,9 @@ func parseUnion(ctx *context, unionNode *jsongo.JSONNode) (*Union, error) {
 	if !ok {
 		return nil, fmt.Errorf("union name is %T, not a string", unionNode.At(0).Get())
 	}
-	unionCRC, ok := unionNode.At(unionNode.Len() - 1).At(crcField).Get().(string)
-	if !ok {
-		return nil, fmt.Errorf("union crc invalid or missing")
+	var unionCRC string
+	if unionNode.At(unionNode.Len()-1).GetType() == jsongo.TypeMap {
+		unionCRC = unionNode.At(unionNode.Len() - 1).At(crcField).Get().(string)
 	}
 
 	union := Union{
@@ -284,8 +284,8 @@ func parseUnion(ctx *context, unionNode *jsongo.JSONNode) (*Union, error) {
 		CRC:  unionCRC,
 	}
 
-	// loop through union fields, skip first (name) and last (crc)
-	for j := 1; j < unionNode.Len()-1; j++ {
+	// loop through union fields, skip first (name)
+	for j := 1; j < unionNode.Len(); j++ {
 		if unionNode.At(j).GetType() == jsongo.TypeArray {
 			fieldNode := unionNode.At(j)
 
@@ -311,9 +311,9 @@ func parseType(ctx *context, typeNode *jsongo.JSONNode) (*Type, error) {
 	if !ok {
 		return nil, fmt.Errorf("type name is %T, not a string", typeNode.At(0).Get())
 	}
-	typeCRC, ok := typeNode.At(typeNode.Len() - 1).At(crcField).Get().(string)
-	if !ok {
-		return nil, fmt.Errorf("type crc invalid or missing")
+	var typeCRC string
+	if lastField := typeNode.At(typeNode.Len() - 1); lastField.GetType() == jsongo.TypeMap {
+		typeCRC = lastField.At(crcField).Get().(string)
 	}
 
 	typ := Type{
@@ -321,8 +321,8 @@ func parseType(ctx *context, typeNode *jsongo.JSONNode) (*Type, error) {
 		CRC:  typeCRC,
 	}
 
-	// loop through type fields, skip first (name) and last (crc)
-	for j := 1; j < typeNode.Len()-1; j++ {
+	// loop through type fields, skip first (name)
+	for j := 1; j < typeNode.Len(); j++ {
 		if typeNode.At(j).GetType() == jsongo.TypeArray {
 			fieldNode := typeNode.At(j)