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package ethutil

import (
    "fmt"
    "github.com/obscuren/mutan"
    "github.com/obscuren/serpent-go"
    "strings"
)

// General compile function
func Compile(script string) (ret []byte, err error) {
    c := strings.Split(script, "\n")[0]

    if c == "#!serpent" {
        byteCode, err := serpent.Compile(script)
        if err != nil {
            return nil, err
        }

        return byteCode, nil
    } else {
        byteCode, errors := mutan.Compile(strings.NewReader(script), false)
        if len(errors) > 0 {
            var errs string
            for _, er := range errors {
                if er != nil {
                    errs += er.Error()
                }
            }
            return nil, fmt.Errorf("%v", errs)
        }

        return byteCode, nil
    }
}

func CompileScript(script string) ([]byte, []byte, error) {
    // Preprocess
    mainInput, initInput := mutan.PreParse(script)
    // Compile main script
    mainScript, err := Compile(mainInput)
    if err != nil {
        return nil, nil, err
    }

    // Compile init script
    initScript, err := Compile(initInput)
    if err != nil {
        return nil, nil, err
    }

    return mainScript, initScript, nil
}