elysium/main.go

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// The compiler
package main
import (
"log"
"os"
)
func main() {
if len(os.Args) != 2 {
log.Fatalln("Usage: " + os.Args[0] + " <file>")
}
content, err := os.ReadFile(os.Args[1])
if err != nil {
log.Fatalln("Cannot open input file.", err)
}
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tokens, err := lexer(string(content))
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if err != nil {
log.Fatalln(err)
}
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log.Printf("Tokens:\n%+#v\n\n", tokens)
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parser := Parser{Tokens: tokens}
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parsed, err := parser.parseFile()
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if err != nil {
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if c, ok := err.(CompilerError); ok {
log.Fatalln(err, "\nv- here\n"+string([]rune(string(content))[c.Position:]))
}
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log.Fatalln(err)
}
log.Printf("Parsed:\n%+#v\n\n", parsed)
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}