package main

import (
	"fmt"
	"log"
	"os"

	"sfdl/parser"
	"sfdl/scanner"
	"sfdl/semantices"
)

func main() {
	if len(os.Args) < 2 {
		fmt.Println("usage: sfdl <source-file>")
		return
	}
	filename := os.Args[1]

	sc, err := scanner.NewScannerFromFile(filename)
	if err != nil {
		log.Fatalf("open file failed: %v", err)
	}

	// 初始化语义状态 & 画布
	parser.ResetState()
	semantices.InitCanvas()

	p := parser.NewParser(sc)
	p.Parse()

	// 保存图片
	outFile := "out.png"
	if err := semantices.SavePNG(outFile); err != nil {
		log.Fatalf("save png failed: %v", err)
	}
	fmt.Println("Done. output:", outFile)
}