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Original file line number | Diff line number | Diff line change |
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/* | ||
Copyright 2023 Loophole Labs | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
|
||
package rust | ||
|
||
import ( | ||
"bytes" | ||
"context" | ||
"strings" | ||
"text/template" | ||
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interfacesVersion "github.com/loopholelabs/scale-extension-interfaces/version" | ||
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polyglotVersion "github.com/loopholelabs/polyglot/version" | ||
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"github.com/loopholelabs/scale/signature" | ||
scaleVersion "github.com/loopholelabs/scale/version" | ||
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polyglotUtils "github.com/loopholelabs/polyglot/utils" | ||
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"github.com/loopholelabs/scale/extension" | ||
"github.com/loopholelabs/scale/extension/generator/rust/templates" | ||
"github.com/loopholelabs/scale/signature/generator/rust/format" | ||
"github.com/loopholelabs/scale/signature/generator/utils" | ||
) | ||
|
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const ( | ||
defaultPackageName = "types" | ||
) | ||
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var generator *Generator | ||
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// GenerateTypes generates the types for the extension | ||
func GenerateTypes(extensionSchema *extension.Schema, packageName string) ([]byte, error) { | ||
return generator.GenerateTypes(extensionSchema, packageName) | ||
} | ||
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// GenerateCargofile generates the cargo.toml file for the extension | ||
func GenerateCargofile(packageName string, packageVersion string) ([]byte, error) { | ||
return generator.GenerateCargofile(packageName, packageVersion) | ||
} | ||
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func GenerateGuest(extensionSchema *extension.Schema, extensionHash string, packageName string) ([]byte, error) { | ||
return generator.GenerateGuest(extensionSchema, extensionHash, packageName) | ||
} | ||
|
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func init() { | ||
var err error | ||
generator, err = New() | ||
if err != nil { | ||
panic(err) | ||
} | ||
} | ||
|
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// Generator is the rust generator | ||
type Generator struct { | ||
templ *template.Template | ||
formatter *format.Formatter | ||
} | ||
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// New creates a new rust generator | ||
func New() (*Generator, error) { | ||
templ, err := template.New("").Funcs(templateFunctions()).ParseFS(templates.FS, "*.rs.templ") | ||
if err != nil { | ||
return nil, err | ||
} | ||
|
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formatter, err := format.New() | ||
if err != nil { | ||
return nil, err | ||
} | ||
|
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return &Generator{ | ||
templ: templ, | ||
formatter: formatter, | ||
}, nil | ||
} | ||
|
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// GenerateTypes generates the types for the extension | ||
func (g *Generator) GenerateTypes(extensionSchema *extension.Schema, packageName string) ([]byte, error) { | ||
if packageName == "" { | ||
packageName = defaultPackageName | ||
} | ||
|
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buf := new(bytes.Buffer) | ||
err := g.templ.ExecuteTemplate(buf, "types.rs.templ", map[string]any{ | ||
"signature_schema": extensionSchema, | ||
"package_name": packageName, | ||
}) | ||
if err != nil { | ||
return nil, err | ||
} | ||
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formatted, err := g.formatter.Format(context.Background(), buf.String()) | ||
if err != nil { | ||
return nil, err | ||
} | ||
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buf.Reset() | ||
err = g.templ.ExecuteTemplate(buf, "header.rs.templ", map[string]any{ | ||
"generator_version": strings.Trim(scaleVersion.Version(), "v"), | ||
"package_name": packageName, | ||
}) | ||
if err != nil { | ||
return nil, err | ||
} | ||
return []byte(buf.String() + "\n\n" + formatted), nil | ||
} | ||
|
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// GenerateCargofile generates the cargofile for the signature | ||
func (g *Generator) GenerateCargofile(packageName string, packageVersion string) ([]byte, error) { | ||
buf := new(bytes.Buffer) | ||
err := g.templ.ExecuteTemplate(buf, "cargo.rs.templ", map[string]any{ | ||
"polyglot_version": strings.TrimPrefix(polyglotVersion.Version(), "v"), | ||
"scale_extension_interfaces_version": strings.TrimPrefix(interfacesVersion.Version(), "v"), | ||
"package_name": packageName, | ||
"package_version": strings.TrimPrefix(packageVersion, "v"), | ||
}) | ||
if err != nil { | ||
return nil, err | ||
} | ||
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return buf.Bytes(), nil | ||
} | ||
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// GenerateGuest generates the guest bindings | ||
func (g *Generator) GenerateGuest(extensionSchema *extension.Schema, extensionHash string, packageName string) ([]byte, error) { | ||
if packageName == "" { | ||
packageName = defaultPackageName | ||
} | ||
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buf := new(bytes.Buffer) | ||
err := g.templ.ExecuteTemplate(buf, "guest.rs.templ", map[string]any{ | ||
"extension_schema": extensionSchema, | ||
"extension_hash": extensionHash, | ||
}) | ||
if err != nil { | ||
return nil, err | ||
} | ||
|
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formatted, err := g.formatter.Format(context.Background(), buf.String()) | ||
if err != nil { | ||
return nil, err | ||
} | ||
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buf.Reset() | ||
err = g.templ.ExecuteTemplate(buf, "header.rs.templ", map[string]any{ | ||
"generator_version": strings.TrimPrefix(scaleVersion.Version(), "v"), | ||
"package_name": packageName, | ||
}) | ||
if err != nil { | ||
return nil, err | ||
} | ||
return []byte(buf.String() + "\n\n" + formatted), nil | ||
} | ||
|
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func templateFunctions() template.FuncMap { | ||
return template.FuncMap{ | ||
"Primitive": primitive, | ||
"IsPrimitive": signature.ValidPrimitiveType, | ||
"PolyglotPrimitive": polyglotPrimitive, | ||
"PolyglotPrimitiveEncode": polyglotPrimitiveEncode, | ||
"PolyglotPrimitiveDecode": polyglotPrimitiveDecode, | ||
"Deref": func(i *bool) bool { return *i }, | ||
"LowerFirst": func(s string) string { return string(s[0]+32) + s[1:] }, | ||
"SnakeCase": polyglotUtils.SnakeCase, | ||
"Params": utils.Params, | ||
} | ||
} | ||
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func primitive(t string) string { | ||
switch t { | ||
case "string": | ||
return "String" | ||
case "int32": | ||
return "i32" | ||
case "int64": | ||
return "i64" | ||
case "uint32": | ||
return "u32" | ||
case "uint64": | ||
return "u64" | ||
case "float32": | ||
return "f32" | ||
case "float64": | ||
return "f64" | ||
case "bool": | ||
return "bool" | ||
case "bytes": | ||
return "Vec<u8>" | ||
default: | ||
return t | ||
} | ||
} | ||
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func polyglotPrimitive(t string) string { | ||
switch t { | ||
case "string": | ||
return "Kind::String" | ||
case "int32": | ||
return "Kind::I32" | ||
case "int64": | ||
return "Kind::I64" | ||
case "uint32": | ||
return "Kind::U32" | ||
case "uint64": | ||
return "Kind::U64" | ||
case "float32": | ||
return "Kind::F32" | ||
case "float64": | ||
return "Kind::F64" | ||
case "bool": | ||
return "Kind::Bool" | ||
case "bytes": | ||
return "Kind::Bytes" | ||
default: | ||
return "Kind::Any" | ||
} | ||
} | ||
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func polyglotPrimitiveEncode(t string) string { | ||
switch t { | ||
case "string": | ||
return "encode_string" | ||
case "int32": | ||
return "encode_i32" | ||
case "int64": | ||
return "encode_i64" | ||
case "uint32": | ||
return "encode_u32" | ||
case "uint64": | ||
return "encode_u64" | ||
case "float32": | ||
return "encode_f32" | ||
case "float64": | ||
return "encode_f64" | ||
case "bool": | ||
return "encode_bool" | ||
case "bytes": | ||
return "encode_bytes" | ||
default: | ||
return t | ||
} | ||
} | ||
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func polyglotPrimitiveDecode(t string) string { | ||
switch t { | ||
case "string": | ||
return "decode_string" | ||
case "int32": | ||
return "decode_i32" | ||
case "int64": | ||
return "decode_i64" | ||
case "uint32": | ||
return "decode_u32" | ||
case "uint64": | ||
return "decode_u64" | ||
case "float32": | ||
return "decode_f32" | ||
case "float64": | ||
return "decode_f64" | ||
case "bool": | ||
return "decode_bool" | ||
case "bytes": | ||
return "decode_bytes" | ||
default: | ||
return "" | ||
} | ||
} |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,43 @@ | ||
//go:build !integration && !generate | ||
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/* | ||
Copyright 2023 Loophole Labs | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
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package rust | ||
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import ( | ||
"os" | ||
"testing" | ||
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"github.com/stretchr/testify/require" | ||
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"github.com/loopholelabs/scale/extension" | ||
) | ||
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func TestGenerator(t *testing.T) { | ||
s := new(extension.Schema) | ||
err := s.Decode([]byte(extension.MasterTestingSchema)) | ||
require.NoError(t, err) | ||
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formatted, err := GenerateTypes(s, "types") | ||
require.NoError(t, err) | ||
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os.WriteFile("./generated.txt", formatted, 0644) | ||
/* | ||
master, err := os.ReadFile("./generated.txt") | ||
require.NoError(t, err) | ||
require.Equal(t, string(master), string(formatted)) | ||
*/ | ||
t.Log(string(formatted)) | ||
|
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} |
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{{ define "rs_arrays_struct_reference" }} | ||
{{ $type := .Type }} | ||
{{- range .Entries }} | ||
{{- if (Deref .Accessor) }} | ||
{{ SnakeCase .Name }}: Vec<{{ Primitive $type }}>, | ||
{{- else }} | ||
pub {{ SnakeCase .Name }}: Vec<{{ Primitive $type }}>, | ||
{{- end -}} | ||
{{- end }} | ||
{{ end }} | ||
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{{ define "rs_arrays_new_struct_reference" }} | ||
{{ $type := .Type }} | ||
{{- range .Entries }} | ||
{{ SnakeCase .Name }}: Vec::with_capacity({{ .InitialSize }}), | ||
{{- end }} | ||
{{ end }} | ||
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{{ define "rs_arrays_encode" }} | ||
{{ $type := .Type }} | ||
{{- range .Entries }} | ||
e.encode_array(self.{{ SnakeCase .Name }}.len(), {{ PolyglotPrimitive $type }})?; | ||
for a in &self.{{ SnakeCase .Name }} { | ||
e.{{ PolyglotPrimitiveEncode $type }}(*a)?; | ||
} | ||
{{- end }} | ||
{{ end }} | ||
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{{ define "rs_arrays_decode" }} | ||
{{ $type := .Type }} | ||
{{- range .Entries }} | ||
let size_{{ SnakeCase .Name }} = d.decode_array({{ PolyglotPrimitive $type }})?; | ||
for _ in 0..size_{{ SnakeCase .Name }} { | ||
x.{{ SnakeCase .Name }}.push(d.{{ PolyglotPrimitiveDecode $type }}()?); | ||
} | ||
{{- end }} | ||
{{ end }} |
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