genbindings: add helper arguments to dump wip json

cmd/genbindings/clang2il.go

@@ -11,14 +11,6 @@ func parseHeader(inner []interface{}) (*parsedHeader, error) {
 
 	var ret parsedHeader
 
-	/*
-		jb, err := json.MarshalIndent(inner, "", "\t")
-		if err != nil {
-			panic(err)
-		}
-		fmt.Println(string(jb))
-	*/
-
 	fmt.Printf("package miqt\n\n")
 
 	for _, node := range inner {

cmd/genbindings/main.go

@@ -2,9 +2,12 @@ package main
 
 import (
 	"context"
+	"encoding/json"
 	"flag"
+	"fmt"
 	"io/ioutil"
 	"log"
+	"os"
 	"path/filepath"
 	"strings"
 )
@@ -16,6 +19,8 @@ func main() {
 	inputHeader := flag.String("inputHeader", `/usr/include/x86_64-linux-gnu/qt5/QtWidgets/qpushbutton.h`, "Input file")
 	cflags := flag.String("cflags", `-DQT_WIDGETS_LIB -I/usr/include/x86_64-linux-gnu/qt5/QtWidgets -I/usr/include/x86_64-linux-gnu/qt5 -I/usr/include/x86_64-linux-gnu/qt5/QtCore -DQT_GUI_LIB -I/usr/include/x86_64-linux-gnu/qt5/QtGui -DQT_CORE_LIB`, "Cflags to pass to clang (e.g. `pkg-config --cflags Qt5Widgets`)")
 	outDir := flag.String("outdir", "..", "Output directory for generated gen_** files")
+	dumpClang := flag.Bool("dumpclang", false, "Dump clang JSON to stdout and exit")
+	dumpIL := flag.Bool("dumpil", false, "Dump intermediate IL JSON to stdout and exit")
 
 	flag.Parse()
 
@@ -25,12 +30,30 @@ func main() {
 		panic(err)
 	}
 
+	if *dumpClang {
+		jb, err := json.MarshalIndent(astInner, "", "\t")
+		if err != nil {
+			panic(err)
+		}
+		fmt.Println(string(jb))
+		os.Exit(0)
+	}
+
 	// Convert it to our intermediate format
 	parsed, err := parseHeader(astInner)
 	if err != nil {
 		panic(err)
 	}
 
+	if *dumpIL {
+		jb, err := json.MarshalIndent(parsed, "", "\t")
+		if err != nil {
+			panic(err)
+		}
+		fmt.Println(string(jb))
+		os.Exit(0)
+	}
+
 	// Emit 3 code files from the intermediate format
 	outputName := filepath.Join(*outDir, "gen_"+strings.TrimSuffix(filepath.Base(*inputHeader), `.h`))