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create instructions codec #954

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create instructions codec #954

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30 changes: 26 additions & 4 deletions pkg/solana/codec/solana.go
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,28 @@ func NewNamedModifierCodec(original types.RemoteCodec, itemType string, modifier
return modCodec, err
}

func NewIDLInstructionsCodec(idl IDL, builder encodings.Builder) (types.RemoteCodec, error) {
typeCodecs := make(encodings.LenientCodecFromTypeCodec)
caser := cases.Title(language.English)
refs := &codecRefs{
builder: builder,
codecs: make(map[string]encodings.TypeCodec),
typeDefs: idl.Types,
dependencies: make(map[string][]string),
}

for _, instruction := range idl.Instructions {
name, instCodec, err := asStruct(instruction.Args, refs, instruction.Name, caser, false)
if err != nil {
return nil, err
}

typeCodecs[name] = instCodec
}

return typeCodecs, nil
}

// NewIDLAccountCodec is for Anchor custom types
func NewIDLAccountCodec(idl IDL, builder encodings.Builder) (types.RemoteCodec, error) {
return newIDLCoded(idl, builder, idl.Accounts, true)
Expand Down Expand Up @@ -115,7 +137,7 @@ func createNamedCodec(

switch def.Type.Kind {
case IdlTypeDefTyKindStruct:
return asStruct(def, refs, name, caser, includeDiscriminator)
return asStruct(*def.Type.Fields, refs, name, caser, includeDiscriminator)
case IdlTypeDefTyKindEnum:
variants := def.Type.Variants
if !variants.IsAllUint8() {
Expand All @@ -129,7 +151,7 @@ func createNamedCodec(
}

func asStruct(
def IdlTypeDef,
fields []IdlField,
refs *codecRefs,
name string, // name is the struct name and can be used in dependency checks
caser cases.Caser,
Expand All @@ -139,13 +161,13 @@ func asStruct(
if includeDiscriminator {
desLen = 1
}
named := make([]encodings.NamedTypeCodec, len(*def.Type.Fields)+desLen)
named := make([]encodings.NamedTypeCodec, len(fields)+desLen)

if includeDiscriminator {
named[0] = encodings.NamedTypeCodec{Name: "Discriminator" + name, Codec: NewDiscriminator(name)}
}

for idx, field := range *def.Type.Fields {
for idx, field := range fields {
fieldName := field.Name

typedCodec, err := processFieldType(name, field.Type, refs)
Expand Down
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