87 lines
2.6 KiB
Go
87 lines
2.6 KiB
Go
package codegen
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import (
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"fmt"
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"google.golang.org/protobuf/compiler/protogen"
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"google.golang.org/protobuf/types/dynamicpb"
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ormv1 "github.com/cosmos/cosmos-sdk/api/cosmos/orm/v1"
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"github.com/cosmos/cosmos-sdk/orm/model/ormtable"
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)
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type singletonGen struct {
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fileGen
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msg *protogen.Message
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table *ormv1.SingletonDescriptor
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ormTable ormtable.Table
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}
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func newSingletonGen(fileGen fileGen, msg *protogen.Message, table *ormv1.SingletonDescriptor) (*singletonGen, error) {
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s := &singletonGen{fileGen: fileGen, msg: msg, table: table}
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var err error
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s.ormTable, err = ormtable.Build(ormtable.Options{
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MessageType: dynamicpb.NewMessageType(msg.Desc),
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SingletonDescriptor: table,
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})
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return s, err
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}
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func (s singletonGen) gen() {
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s.genInterface()
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s.genStruct()
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s.genInterfaceGuard()
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s.genMethods()
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s.genConstructor()
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}
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func (s singletonGen) genInterface() {
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s.P("// singleton store")
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s.P("type ", s.messageTableInterfaceName(s.msg), " interface {")
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s.P("Get(ctx ", contextPkg.Ident("Context"), ") (*", s.msg.GoIdent.GoName, ", error)")
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s.P("Save(ctx ", contextPkg.Ident("Context"), ", ", s.param(s.msg.GoIdent.GoName), "*", s.msg.GoIdent.GoName, ") error")
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s.P("}")
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s.P()
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}
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func (s singletonGen) genStruct() {
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s.P("type ", s.messageTableReceiverName(s.msg), " struct {")
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s.P("table ", ormTablePkg.Ident("Table"))
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s.P("}")
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s.P()
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}
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func (s singletonGen) genInterfaceGuard() {
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s.P("var _ ", s.messageTableInterfaceName(s.msg), " = ", s.messageTableReceiverName(s.msg), "{}")
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}
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func (s singletonGen) genMethods() {
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receiver := fmt.Sprintf("func (x %s) ", s.messageTableReceiverName(s.msg))
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varName := s.param(s.msg.GoIdent.GoName)
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// Get
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s.P(receiver, "Get(ctx ", contextPkg.Ident("Context"), ") (*", s.msg.GoIdent.GoName, ", error) {")
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s.P(varName, " := &", s.msg.GoIdent.GoName, "{}")
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s.P("_, err := x.table.Get(ctx, ", varName, ")")
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s.P("return ", varName, ", err")
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s.P("}")
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s.P()
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// Save
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s.P(receiver, "Save(ctx ", contextPkg.Ident("Context"), ", ", varName, " *", s.msg.GoIdent.GoName, ") error {")
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s.P("return x.table.Save(ctx, ", varName, ")")
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s.P("}")
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s.P()
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}
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func (s singletonGen) genConstructor() {
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iface := s.messageTableInterfaceName(s.msg)
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s.P("func New", iface, "(db ", ormTablePkg.Ident("Schema"), ") (", iface, ", error) {")
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s.P("table := db.GetTable(&", s.msg.GoIdent.GoName, "{})")
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s.P("if table == nil {")
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s.P("return nil, ", ormErrPkg.Ident("TableNotFound.Wrap"), "(string((&", s.msg.GoIdent.GoName, "{}).ProtoReflect().Descriptor().FullName()))")
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s.P("}")
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s.P("return &", s.messageTableReceiverName(s.msg), "{table}, nil")
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s.P("}")
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}
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