elct9620/mruby-go

package mruby

import (
    "fmt"
    "unsafe"
)

var (
    binaryHeaderSize  = uint32(unsafe.Sizeof(binaryHeader{}))
    sectionHeaderSize = uint32(unsafe.Sizeof(sectionHeader{}))
)

type binaryVersion struct {
    Major [2]byte
    Minor [2]byte
}

func (v binaryVersion) String() string {
    return fmt.Sprintf("%s.%s", v.Major, v.Minor)
}

type binaryCompiler struct {
    Name    [4]byte
    Version [4]byte
}

func (c binaryCompiler) String() string {
    return fmt.Sprintf("%s#%s", c.Name, c.Version)
}

type binaryHeader struct {
    Identifier [4]byte
    Version    binaryVersion
    Size       uint32
    Compiler   binaryCompiler
}

func (h binaryHeader) String() string {
    return fmt.Sprintf(
        `#<RITE id="%s" version="%s" size="%d" compiler="%s">`,
        h.Identifier,
        h.Version,
        h.Size,
        h.Compiler,
    )
}

type sectionType = string

const (
    sectionTypeIRep  sectionType = "IREP"
    sectionTypeDebug sectionType = "DBG\x00"
    sectionTypeLv    sectionType = "LVAR"
    sectionTypeEof   sectionType = "EOF\x00"
)

type sectionHeader struct {
    Identity [4]byte
    Size     uint32
}

func (h sectionHeader) String() string {
    return string(h.Identity[:])
}