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script.go
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script.go
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package ast
import (
"bytes"
stdJSON "encoding/json"
"fmt"
"strings"
"github.com/dipdup-net/go-lib/tools/base"
"github.com/dipdup-net/go-lib/tools/consts"
"github.com/pkg/errors"
)
// Script -
type Script struct {
Code UntypedAST `json:"code"`
Parameter UntypedAST `json:"parameter"`
Storage UntypedAST `json:"storage"`
}
type sectionNode struct {
Prim string `json:"prim"`
Args stdJSON.RawMessage `json:"args"`
}
// UnmarshalJSON -
func (s *Script) UnmarshalJSON(data []byte) error {
var ast UntypedAST
if err := json.Unmarshal(data, &ast); err != nil {
return err
}
if len(ast) == 1 && ast[0].Prim == consts.PrimArray {
ast = ast[0].Args
}
for i := range ast {
tree := UntypedAST(ast[i].Args)
switch ast[i].Prim {
case consts.PARAMETER:
s.Parameter = tree
case consts.STORAGE:
s.Storage = tree
case consts.CODE:
s.Code = tree
default:
return errors.Wrap(consts.ErrUnknownPrim, fmt.Sprintf("NewScript : %s", ast[i].Prim))
}
}
return nil
}
// MarshalJSON -
func (s *Script) MarshalJSON() ([]byte, error) {
var buf bytes.Buffer
buf.WriteString(`[{"prim":"parameter","args":`)
parameter, err := json.Marshal(s.Parameter)
if err != nil {
return nil, err
}
buf.Write(parameter)
buf.WriteString(`},{"prim":"storage","args":`)
storage, err := json.Marshal(s.Storage)
if err != nil {
return nil, err
}
buf.Write(storage)
buf.WriteString(`},{"prim":"code","args":`)
code, err := json.Marshal(s.Code)
if err != nil {
return nil, err
}
buf.Write(code)
buf.WriteString("}]")
return buf.Bytes(), nil
}
// NewScript - creates `Script` object: untyped trees of code, storage and parameter
func NewScript(data []byte) (*Script, error) {
var s Script
err := json.Unmarshal(data, &s)
return &s, err
}
// NewScriptWithoutCode - creates `Script` object without code tree: storage and parameter
func NewScriptWithoutCode(data []byte) (*Script, error) {
var sections []sectionNode
if err := json.Unmarshal(data, §ions); err != nil {
return nil, err
}
var script Script
for i := range sections {
switch sections[i].Prim {
case consts.PARAMETER:
var tree UntypedAST
if err := json.Unmarshal(sections[i].Args, &tree); err != nil {
return nil, err
}
script.Parameter = tree
case consts.STORAGE:
var tree UntypedAST
if err := json.Unmarshal(sections[i].Args, &tree); err != nil {
return nil, err
}
script.Storage = tree
}
}
return &script, nil
}
// Compare - compares two scripts
func (s *Script) Compare(another *Script) bool {
if len(s.Parameter) != len(another.Parameter) {
return false
}
for i := range s.Parameter {
if !s.Parameter[i].Compare(another.Parameter[i]) {
return false
}
}
if len(s.Storage) != len(another.Storage) {
return false
}
for i := range s.Storage {
if !s.Storage[i].Compare(another.Storage[i]) {
return false
}
}
if len(s.Code) != len(another.Code) {
return false
}
for i := range s.Code {
if !s.Code[i].Compare(another.Code[i]) {
return false
}
}
return true
}
// StorageType - returns storage`s typed tree
func (s *Script) StorageType() (*TypedAst, error) {
return s.Storage.ToTypedAST()
}
// ParameterType - returns parameter`s typed tree
func (s *Script) ParameterType() (*TypedAst, error) {
return s.Parameter.ToTypedAST()
}
// SectionType -
type SectionType struct {
Default
Args []Node
depth int
}
// NewSectionType -
func NewSectionType(prim string, depth int) *SectionType {
return &SectionType{
Default: NewDefault(prim, -1, depth),
}
}
// String -
func (st *SectionType) String() string {
var s strings.Builder
s.WriteString(st.Default.String())
for i := range st.Args {
s.WriteString(strings.Repeat(consts.DefaultIndent, st.depth))
s.WriteString(st.Args[i].String())
}
return s.String()
}
// MarshalJSON -
func (st *SectionType) MarshalJSON() ([]byte, error) {
return marshalJSON(st.Prim, st.Annots, st.Args...)
}
// ParseType -
func (st *SectionType) ParseType(node *base.Node, id *int) error {
if err := st.Default.ParseType(node, id); err != nil {
return err
}
st.Args = make([]Node, 0, len(node.Args))
for _, arg := range node.Args {
child, err := typeNode(arg, st.depth, id)
if err != nil {
return err
}
st.Args = append(st.Args, child)
}
return nil
}
// ParseValue -
func (st *SectionType) ParseValue(node *base.Node) error {
for i := range node.Args {
if err := st.Args[0].ParseValue(node.Args[i]); err != nil {
return err
}
}
return nil
}
// EqualType -
func (st *SectionType) EqualType(node Node) bool {
if !st.Default.EqualType(node) {
return false
}
second, ok := node.(*Parameter)
if !ok {
return false
}
if len(st.Args) != len(second.Args) {
return false
}
for i := range st.Args {
if !st.Args[i].EqualType(second.Args[i]) {
return false
}
}
return true
}