internal

Documentation

Index

• Variables
• func Generate(out, werr io.Writer, fst *token.FileSet, files ...File) error
• func OutputMatching(w io.Writer, localFn string, sel []byte, convFns []string, returnFn string, ...) error
• func OutputPreamble(w io.Writer, name string, args ...PreambleField) error
• type File
• type PreambleField

Variables

var TmplMatching = template.Must(template.New("matching").Parse(`
	// {{.LocalFn }}
	if bytes.Equal(args[:4], {{.Sel}}) {
		var err error
		if len(args) != 4 + {{.CdLen}} {
			return 1
		}
		{{range $i, $e := .ConvFns}}x{{$i}}, err := stylus.{{$e}}(args[4+({{$i}}*32):4+32+({{$i}}*32)])
		if err != nil {
			return 1
		}
		{{end}}{{if .HasErrReturn}}rd{{.LocalFn}}, err :{{else}}err {{end}}= sr.{{.LocalFn}}({{range $i, $e := .ConvFns}}x{{$i}},{{end}})
		if err != nil {
			if d, ok := stylus.IsStylusErr(err); ok {
				stylus.Rd = d
			}
			return 1
		} else {
			return 0
		}
		if rc != 0 {
			return rc
		}
		{{if .HasErrReturn}}
		stylus.Rd = append(stylus.Rd, {{.ReturnFn}}(rd{{.LocalFn}})...){{end}}
	}`,
))

var TmplPreamble = template.Must(template.New("preamble").Parse(`package main

// Code generated by github.com/af-afk/stylus version {{.Rev}}

import (
	"reflect"
	"bytes"

	stylusHost "github.com/af-afk/stylus/host"
	"github.com/af-afk/stylus"
)

//go:inline
func unsafePtr(x any) int32 {
	return *(*int32)(reflect.ValueOf(x).UnsafePointer())
}

//export user_entrypoint
func userEntrypoint(cdlen int32) int32 {
	stylusHost.PayForMemoryGrow(0)
	args := make([]byte, cdlen)
	stylusHost.ReadArgs(unsafePtr(&args))
	var rc int32
	defer func() {
		stylusHost.StorageFlushCache(false)
		stylusHost.WriteResult(unsafePtr(&stylus.Rd), int32(len(stylus.Rd)))
	}()
	if len(args) < 4 {
		return 1
	}
	var sr {{.StructName}}{{range .Args}}
	sr.{{.Name}} = {{.SetupFn}}(){{end}}
	defer func() {
		if r := recover(); r != nil {
			rc = 1
		}
	}()
	`,
))

Functions

func Generate

func Generate(out, werr io.Writer, fst *token.FileSet, files ...File) error

func OutputMatching

func OutputMatching(w io.Writer, localFn string, sel []byte, convFns []string, returnFn string, hasErrReturn bool) error

OutputMatching template code to the generated file. Takes the local function to do conversion from, the selector computed as keccak256, all of the conversion functions needed for each argument, and whether the contract actually returns a separate field for error.

func OutputPreamble

func OutputPreamble(w io.Writer, name string, args ...PreambleField) error

Types

type File

type File struct {
	Name  string
	Decls []ast.Decl
}

type PreambleField

type PreambleField struct {
	Name, SetupFn string
}