wasm

Documentation

Index

• Constants
• func Write(w io.Writer, sections []Section) error
• func WriteModuleHeader(w io.Writer) error
• func WriteSectionHeader(w io.Writer, id SectionID, size uint64) (n int, err error)
• func WriteString(w io.Writer, s string) (n int, err error)
• type CustomSection
  • func (s *CustomSection) SectionContents() ([]byte, error)
  • func (*CustomSection) SectionID() SectionID
• type LinkingSection
  • func (s *LinkingSection) SectionContents() ([]byte, error)
  • func (*LinkingSection) SectionID() SectionID
• type Section
• type SectionID

Constants

const (
	Magic    = "\x00asm"
	Version1 = "\x01\x00\x00\x00"
)

Functions

func Write

func Write(w io.Writer, sections []Section) error

Write writes a binary WebAssembly module to w.

func WriteModuleHeader

func WriteModuleHeader(w io.Writer) error

WriteModuleHeader writes a binary WebAssembly module header (version 1) to w.

func WriteSectionHeader

func WriteSectionHeader(w io.Writer, id SectionID, size uint64) (n int, err error)

WriteSectionHeader writes a binary WebAssembly section header to w. It returns the number of bytes written and/or an error.

func WriteString

func WriteString(w io.Writer, s string) (n int, err error)

WriteString writes a string to w as a LEB128 encoded length followed by the string bytes. Returns the number of bytes written and/or an error.

Types

type CustomSection

type CustomSection struct {
	Name     string
	Contents []byte
}

CustomSection represents a WebAssembly custom section.

func (*CustomSection) SectionContents

func (s *CustomSection) SectionContents() ([]byte, error)

SectionContents implements the Section interface.

func (*CustomSection) SectionID

func (*CustomSection) SectionID() SectionID

SectionID implements the Section interface.

type LinkingSection

type LinkingSection struct{}

func (*LinkingSection) SectionContents

func (s *LinkingSection) SectionContents() ([]byte, error)

SectionContents implements the Section interface.

func (*LinkingSection) SectionID

func (*LinkingSection) SectionID() SectionID

SectionID implements the Section interface.

type Section

type Section interface {
	// SectionID returns the section ID of this section.
	SectionID() SectionID

	// SectionContents returns the section contents as a byte slice.
	SectionContents() ([]byte, error)
}

Section represents an abstract WebAssembly section.

type SectionID

type SectionID uint8

SectionID represents a WebAssembly section SectionID.

const (
	SectionCustom    SectionID = 0
	SectionType      SectionID = 1
	SectionImport    SectionID = 2
	SectionFunction  SectionID = 3
	SectionTable     SectionID = 4
	SectionMemory    SectionID = 5
	SectionGlobal    SectionID = 6
	SectionExport    SectionID = 7
	SectionStart     SectionID = 8
	SectionElement   SectionID = 9
	SectionCode      SectionID = 10
	SectionData      SectionID = 11
	SectionDataCount SectionID = 12
)