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main.go
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main.go
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package main
import (
"github.com/Haato3o/eskema/cli"
"github.com/Haato3o/eskema/core/parser"
"github.com/Haato3o/eskema/core/syntax"
"github.com/Haato3o/eskema/core/visualization"
"log"
"os"
)
func main() {
args := cli.ParseArguments()
if args.ShouldPrintSupportedLanguages {
cli.PrintSupportedLanguages()
return
}
if err := args.VerifyRequired(); err != nil {
log.Fatalln(err)
}
lexer := syntax.NewLexerFromFile(args.FileName)
tokens := lexer.Lex()
eskemaParser := parser.New(tokens)
ast := eskemaParser.Parse()
if hasErrors := eskemaParser.VerifySyntaxErrors(); hasErrors {
return
}
if args.ShouldPrintAST {
visualization.VisualizeTree(ast)
}
emitter, err := cli.GetLanguageEmitter(args.Language)
if err != nil {
log.Fatalln(err)
}
code := emitter.Emit(ast)
if args.Output != "" {
file, _ := os.OpenFile(args.Output, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
_, _ = file.WriteString(code)
_ = file.Close()
} else {
println(code)
}
}