/
genStructReprMap.go
634 lines (605 loc) · 22.5 KB
/
genStructReprMap.go
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package gengo
import (
"io"
"strconv"
"github.com/ipld/go-ipld-prime/schema"
"github.com/ipld/go-ipld-prime/schema/gen/go/mixins"
)
var _ TypeGenerator = &structReprMapGenerator{}
func NewStructReprMapGenerator(pkgName string, typ *schema.TypeStruct, adjCfg *AdjunctCfg) TypeGenerator {
return structReprMapGenerator{
structGenerator{
adjCfg,
mixins.MapTraits{
PkgName: pkgName,
TypeName: string(typ.Name()),
TypeSymbol: adjCfg.TypeSymbol(typ),
},
pkgName,
typ,
},
}
}
type structReprMapGenerator struct {
structGenerator
}
func (g structReprMapGenerator) GetRepresentationNodeGen() NodeGenerator {
return structReprMapReprGenerator{
g.AdjCfg,
mixins.MapTraits{
PkgName: g.PkgName,
TypeName: string(g.Type.Name()) + ".Repr",
TypeSymbol: "_" + g.AdjCfg.TypeSymbol(g.Type) + "__Repr",
},
g.PkgName,
g.Type,
}
}
type structReprMapReprGenerator struct {
AdjCfg *AdjunctCfg
mixins.MapTraits
PkgName string
Type *schema.TypeStruct
}
func (structReprMapReprGenerator) IsRepr() bool { return true } // hint used in some generalized templates.
func (g structReprMapReprGenerator) EmitNodeType(w io.Writer) {
// The type is structurally the same, but will have a different set of methods.
doTemplate(`
type _{{ .Type | TypeSymbol }}__Repr _{{ .Type | TypeSymbol }}
`, w, g.AdjCfg, g)
// We do also want some constants for our fields;
// they'll make iterators able to work faster.
// These might be the same strings as the type-level field names
// (in fact, they are, unless renames are used)... but that's fine.
// We get simpler code by just doing this unconditionally.
doTemplate(`
var (
{{- $type := .Type -}} {{- /* ranging modifies dot, unhelpfully */ -}}
{{- range $field := .Type.Fields }}
fieldName__{{ $type | TypeSymbol }}_{{ $field | FieldSymbolUpper }}_serial = _String{"{{ $field | $type.RepresentationStrategy.GetFieldKey }}"}
{{- end }}
)
`, w, g.AdjCfg, g)
}
func (g structReprMapReprGenerator) EmitNodeTypeAssertions(w io.Writer) {
doTemplate(`
var _ datamodel.Node = &_{{ .Type | TypeSymbol }}__Repr{}
`, w, g.AdjCfg, g)
}
func (g structReprMapReprGenerator) EmitNodeMethodLookupByString(w io.Writer) {
// Similar to the type-level method, except any absent fields also return ErrNotExists.
doTemplate(`
func (n *_{{ .Type | TypeSymbol }}__Repr) LookupByString(key string) (datamodel.Node, error) {
switch key {
{{- range $field := .Type.Fields }}
case "{{ $field | $field.Parent.RepresentationStrategy.GetFieldKey }}":
{{- if $field.IsOptional }}
if n.{{ $field | FieldSymbolLower }}.m == schema.Maybe_Absent {
return datamodel.Absent, datamodel.ErrNotExists{Segment: datamodel.PathSegmentOfString(key)}
}
{{- end}}
{{- if $field.IsNullable }}
if n.{{ $field | FieldSymbolLower }}.m == schema.Maybe_Null {
return datamodel.Null, nil
}
{{- end}}
{{- if $field.IsMaybe }}
return n.{{ $field | FieldSymbolLower }}.v.Representation(), nil
{{- else}}
return n.{{ $field | FieldSymbolLower }}.Representation(), nil
{{- end}}
{{- end}}
default:
return nil, schema.ErrNoSuchField{Type: nil /*TODO*/, Field: datamodel.PathSegmentOfString(key)}
}
}
`, w, g.AdjCfg, g)
}
func (g structReprMapReprGenerator) EmitNodeMethodLookupByNode(w io.Writer) {
doTemplate(`
func (n *_{{ .Type | TypeSymbol }}__Repr) LookupByNode(key datamodel.Node) (datamodel.Node, error) {
ks, err := key.AsString()
if err != nil {
return nil, err
}
return n.LookupByString(ks)
}
`, w, g.AdjCfg, g)
}
func (g structReprMapReprGenerator) EmitNodeMethodMapIterator(w io.Writer) {
// The 'idx' int is what field we'll yield next.
// Note that this iterator doesn't mention fields that are absent.
// This makes things a bit trickier -- especially the 'Done' predicate,
// since it may have to do lookahead if there's any optionals at the end of the structure!
// It also means 'idx' can jump ahead by more than one per Next call in order to skip over absent fields.
// TODO : support for implicits is still future work.
// First: Determine if there are any optionals at all.
// If there are none, some control flow symbols need to not be emitted.
fields := g.Type.Fields()
haveOptionals := false
for _, field := range fields {
if field.IsOptional() {
haveOptionals = true
break
}
}
// Second: Count how many trailing fields are optional.
// The 'Done' predicate gets more complex when in the trailing optionals.
fieldCount := len(fields)
beginTrailingOptionalField := fieldCount
for i := fieldCount - 1; i >= 0; i-- {
if !fields[i].IsOptional() {
break
}
beginTrailingOptionalField = i
}
haveTrailingOptionals := beginTrailingOptionalField < fieldCount
// Now: finally we can get on with the actual templating.
doTemplate(`
func (n *_{{ .Type | TypeSymbol }}__Repr) MapIterator() datamodel.MapIterator {
{{- if .HaveTrailingOptionals }}
end := {{ len .Type.Fields }}`+
func() string { // this next part was too silly in templates due to lack of reverse ranging.
v := "\n"
for i := fieldCount - 1; i >= beginTrailingOptionalField; i-- {
v += "\t\t\tif n." + g.AdjCfg.FieldSymbolLower(fields[i]) + ".m == schema.Maybe_Absent {\n"
v += "\t\t\t\tend = " + strconv.Itoa(i) + "\n"
v += "\t\t\t} else {\n"
v += "\t\t\t\tgoto done\n"
v += "\t\t\t}\n"
}
return v
}()+`done:
return &_{{ .Type | TypeSymbol }}__ReprMapItr{n, 0, end}
{{- else}}
return &_{{ .Type | TypeSymbol }}__ReprMapItr{n, 0}
{{- end}}
}
type _{{ .Type | TypeSymbol }}__ReprMapItr struct {
n *_{{ .Type | TypeSymbol }}__Repr
idx int
{{if .HaveTrailingOptionals }}end int{{end}}
}
func (itr *_{{ .Type | TypeSymbol }}__ReprMapItr) Next() (k datamodel.Node, v datamodel.Node, _ error) {
{{- if not .Type.Fields }}
{{- /* TODO: deduplicate all these methods which just error */ -}}
return nil, nil, datamodel.ErrIteratorOverread{}
{{ else -}}
{{ if .HaveOptionals }}advance:{{end -}}
if itr.idx >= {{ len .Type.Fields }} {
return nil, nil, datamodel.ErrIteratorOverread{}
}
switch itr.idx {
{{- $type := .Type -}} {{- /* ranging modifies dot, unhelpfully */ -}}
{{- range $i, $field := .Type.Fields }}
case {{ $i }}:
k = &fieldName__{{ $type | TypeSymbol }}_{{ $field | FieldSymbolUpper }}_serial
{{- if $field.IsOptional }}
if itr.n.{{ $field | FieldSymbolLower }}.m == schema.Maybe_Absent {
itr.idx++
goto advance
}
{{- end}}
{{- if $field.IsNullable }}
if itr.n.{{ $field | FieldSymbolLower }}.m == schema.Maybe_Null {
v = datamodel.Null
break
}
{{- end}}
{{- if $field.IsMaybe }}
v = itr.n.{{ $field | FieldSymbolLower}}.v.Representation()
{{- else}}
v = itr.n.{{ $field | FieldSymbolLower}}.Representation()
{{- end}}
{{- end}}
default:
panic("unreachable")
}
itr.idx++
return
{{- end}}
}
{{- if .HaveTrailingOptionals }}
func (itr *_{{ .Type | TypeSymbol }}__ReprMapItr) Done() bool {
return itr.idx >= itr.end
}
{{- else}}
func (itr *_{{ .Type | TypeSymbol }}__ReprMapItr) Done() bool {
return itr.idx >= {{ len .Type.Fields }}
}
{{- end}}
`, w, g.AdjCfg, struct {
Type *schema.TypeStruct
HaveOptionals bool
HaveTrailingOptionals bool
BeginTrailingOptionalField int
}{
g.Type,
haveOptionals,
haveTrailingOptionals,
beginTrailingOptionalField,
})
}
func (g structReprMapReprGenerator) EmitNodeMethodLength(w io.Writer) {
// This is fun: it has to count down for any unset optional fields.
// TODO : support for implicits is still future work.
doTemplate(`
func (rn *_{{ .Type | TypeSymbol }}__Repr) Length() int64 {
l := {{ len .Type.Fields }}
{{- range $field := .Type.Fields }}
{{- if $field.IsOptional }}
if rn.{{ $field | FieldSymbolLower }}.m == schema.Maybe_Absent {
l--
}
{{- end}}
{{- end}}
return int64(l)
}
`, w, g.AdjCfg, g)
}
func (g structReprMapReprGenerator) EmitNodeMethodPrototype(w io.Writer) {
emitNodeMethodPrototype_typical(w, g.AdjCfg, g)
}
func (g structReprMapReprGenerator) EmitNodePrototypeType(w io.Writer) {
emitNodePrototypeType_typical(w, g.AdjCfg, g)
}
// --- NodeBuilder and NodeAssembler --->
func (g structReprMapReprGenerator) GetNodeBuilderGenerator() NodeBuilderGenerator {
return structReprMapReprBuilderGenerator{
g.AdjCfg,
mixins.MapAssemblerTraits{
PkgName: g.PkgName,
TypeName: g.TypeName,
AppliedPrefix: "_" + g.AdjCfg.TypeSymbol(g.Type) + "__Repr",
},
g.PkgName,
g.Type,
}
}
type structReprMapReprBuilderGenerator struct {
AdjCfg *AdjunctCfg
mixins.MapAssemblerTraits
PkgName string
Type *schema.TypeStruct
}
func (structReprMapReprBuilderGenerator) IsRepr() bool { return true } // hint used in some generalized templates.
func (g structReprMapReprBuilderGenerator) EmitNodeBuilderType(w io.Writer) {
emitEmitNodeBuilderType_typical(w, g.AdjCfg, g)
}
func (g structReprMapReprBuilderGenerator) EmitNodeBuilderMethods(w io.Writer) {
emitNodeBuilderMethods_typical(w, g.AdjCfg, g)
}
func (g structReprMapReprBuilderGenerator) EmitNodeAssemblerType(w io.Writer) {
// - 'w' is the "**w**ip" pointer.
// - 'm' is the **m**aybe which communicates our completeness to the parent if we're a child assembler.
// - 'state' is what it says on the tin. this is used for the map state (the broad transitions between null, start-map, and finish are handled by 'm' for consistency.)
// - 's' is a bitfield for what's been **s**et.
// - 'f' is the **f**ocused field that will be assembled next.
//
// - 'cm' is **c**hild **m**aybe and is used for the completion message from children that aren't allowed to be nullable (for those that are, their own maybe.m is used).
// - the 'ca_*' fields embed **c**hild **a**ssemblers -- these are embedded so we can yield pointers to them without causing new allocations.
doTemplate(`
type _{{ .Type | TypeSymbol }}__ReprAssembler struct {
w *_{{ .Type | TypeSymbol }}
m *schema.Maybe
state maState
s int
f int
cm schema.Maybe
{{range $field := .Type.Fields -}}
ca_{{ $field | FieldSymbolLower }} _{{ $field.Type | TypeSymbol }}__ReprAssembler
{{end -}}
}
func (na *_{{ .Type | TypeSymbol }}__ReprAssembler) reset() {
na.state = maState_initial
na.s = 0
{{- range $field := .Type.Fields }}
na.ca_{{ $field | FieldSymbolLower }}.reset()
{{- end}}
}
`, w, g.AdjCfg, g)
}
func (g structReprMapReprBuilderGenerator) EmitNodeAssemblerMethodBeginMap(w io.Writer) {
emitNodeAssemblerMethodBeginMap_strictoid(w, g.AdjCfg, g)
}
func (g structReprMapReprBuilderGenerator) EmitNodeAssemblerMethodAssignNull(w io.Writer) {
emitNodeAssemblerMethodAssignNull_recursive(w, g.AdjCfg, g)
}
func (g structReprMapReprBuilderGenerator) EmitNodeAssemblerMethodAssignNode(w io.Writer) {
// AssignNode goes through three phases:
// 1. is it null? Jump over to AssignNull (which may or may not reject it).
// 2. is it our own type? Handle specially -- we might be able to do efficient things.
// 3. is it the right kind to morph into us? Do so.
//
// We do not set m=midvalue in phase 3 -- it shouldn't matter unless you're trying to pull off concurrent access, which is wrong and unsafe regardless.
doTemplate(`
func (na *_{{ .Type | TypeSymbol }}__ReprAssembler) AssignNode(v datamodel.Node) error {
if v.IsNull() {
return na.AssignNull()
}
if v2, ok := v.(*_{{ .Type | TypeSymbol }}); ok {
switch *na.m {
case schema.Maybe_Value, schema.Maybe_Null:
panic("invalid state: cannot assign into assembler that's already finished")
case midvalue:
panic("invalid state: cannot assign null into an assembler that's already begun working on recursive structures!")
}
{{- if .Type | MaybeUsesPtr }}
if na.w == nil {
na.w = v2
*na.m = schema.Maybe_Value
return nil
}
{{- end}}
*na.w = *v2
*na.m = schema.Maybe_Value
return nil
}
if v.Kind() != datamodel.Kind_Map {
return datamodel.ErrWrongKind{TypeName: "{{ .PkgName }}.{{ .Type.Name }}.Repr", MethodName: "AssignNode", AppropriateKind: datamodel.KindSet_JustMap, ActualKind: v.Kind()}
}
itr := v.MapIterator()
for !itr.Done() {
k, v, err := itr.Next()
if err != nil {
return err
}
if err := na.AssembleKey().AssignNode(k); err != nil {
return err
}
if err := na.AssembleValue().AssignNode(v); err != nil {
return err
}
}
return na.Finish()
}
`, w, g.AdjCfg, g)
}
func (g structReprMapReprBuilderGenerator) EmitNodeAssemblerOtherBits(w io.Writer) {
g.emitMapAssemblerChildTidyHelper(w)
g.emitMapAssemblerMethods(w)
g.emitKeyAssembler(w)
}
func (g structReprMapReprBuilderGenerator) emitMapAssemblerChildTidyHelper(w io.Writer) {
// This is exactly the same as the matching method on the type-level assembler;
// everything that differs happens to be hidden behind the 'f' indirection, which is numeric.
doTemplate(`
func (ma *_{{ .Type | TypeSymbol }}__ReprAssembler) valueFinishTidy() bool {
switch ma.f {
{{- range $i, $field := .Type.Fields }}
case {{ $i }}:
{{- if $field.IsNullable }}
switch ma.w.{{ $field | FieldSymbolLower }}.m {
case schema.Maybe_Null:
ma.state = maState_initial
return true
case schema.Maybe_Value:
{{- if (MaybeUsesPtr $field.Type) }}
ma.w.{{ $field | FieldSymbolLower }}.v = ma.ca_{{ $field | FieldSymbolLower }}.w
{{- end}}
ma.state = maState_initial
return true
default:
return false
}
{{- else if $field.IsOptional }}
switch ma.w.{{ $field | FieldSymbolLower }}.m {
case schema.Maybe_Value:
{{- if (MaybeUsesPtr $field.Type) }}
ma.w.{{ $field | FieldSymbolLower }}.v = ma.ca_{{ $field | FieldSymbolLower }}.w
{{- end}}
ma.state = maState_initial
return true
default:
return false
}
{{- else}}
switch ma.cm {
case schema.Maybe_Value:
{{- /* while defense in depth here might avoid some 'wat' outcomes, it's not strictly necessary for safety */ -}}
{{- /* ma.ca_{{ $field | FieldSymbolLower }}.w = nil */ -}}
{{- /* ma.ca_{{ $field | FieldSymbolLower }}.m = nil */ -}}
ma.cm = schema.Maybe_Absent
ma.state = maState_initial
return true
default:
return false
}
{{- end}}
{{- end}}
default:
panic("unreachable")
}
}
`, w, g.AdjCfg, g)
}
func (g structReprMapReprBuilderGenerator) emitMapAssemblerMethods(w io.Writer) {
// FUTURE: some of the setup of the child assemblers could probably be DRY'd up.
doTemplate(`
func (ma *_{{ .Type | TypeSymbol }}__ReprAssembler) AssembleEntry(k string) (datamodel.NodeAssembler, error) {
switch ma.state {
case maState_initial:
// carry on
case maState_midKey:
panic("invalid state: AssembleEntry cannot be called when in the middle of assembling another key")
case maState_expectValue:
panic("invalid state: AssembleEntry cannot be called when expecting start of value assembly")
case maState_midValue:
if !ma.valueFinishTidy() {
panic("invalid state: AssembleEntry cannot be called when in the middle of assembling a value")
} // if tidy success: carry on
case maState_finished:
panic("invalid state: AssembleEntry cannot be called on an assembler that's already finished")
}
{{- $type := .Type -}} {{- /* ranging modifies dot, unhelpfully */ -}}
{{- if .Type.Fields }}
switch k {
{{- range $i, $field := .Type.Fields }}
case "{{ $field | $type.RepresentationStrategy.GetFieldKey }}":
if ma.s & fieldBit__{{ $type | TypeSymbol }}_{{ $field | FieldSymbolUpper }} != 0 {
return nil, datamodel.ErrRepeatedMapKey{Key: &fieldName__{{ $type | TypeSymbol }}_{{ $field | FieldSymbolUpper }}_serial}
}
ma.s += fieldBit__{{ $type | TypeSymbol }}_{{ $field | FieldSymbolUpper }}
ma.state = maState_midValue
ma.f = {{ $i }}
{{- if $field.IsMaybe }}
ma.ca_{{ $field | FieldSymbolLower }}.w = {{if not (MaybeUsesPtr $field.Type) }}&{{end}}ma.w.{{ $field | FieldSymbolLower }}.v
ma.ca_{{ $field | FieldSymbolLower }}.m = &ma.w.{{ $field | FieldSymbolLower }}.m
{{if $field.IsNullable }}ma.w.{{ $field | FieldSymbolLower }}.m = allowNull{{end}}
{{- else}}
ma.ca_{{ $field | FieldSymbolLower }}.w = &ma.w.{{ $field | FieldSymbolLower }}
ma.ca_{{ $field | FieldSymbolLower }}.m = &ma.cm
{{- end}}
return &ma.ca_{{ $field | FieldSymbolLower }}, nil
{{- end}}
default:
}
{{- end}}
return nil, schema.ErrInvalidKey{TypeName:"{{ .PkgName }}.{{ .Type.Name }}.Repr", Key:&_String{k}}
}
func (ma *_{{ .Type | TypeSymbol }}__ReprAssembler) AssembleKey() datamodel.NodeAssembler {
switch ma.state {
case maState_initial:
// carry on
case maState_midKey:
panic("invalid state: AssembleKey cannot be called when in the middle of assembling another key")
case maState_expectValue:
panic("invalid state: AssembleKey cannot be called when expecting start of value assembly")
case maState_midValue:
if !ma.valueFinishTidy() {
panic("invalid state: AssembleKey cannot be called when in the middle of assembling a value")
} // if tidy success: carry on
case maState_finished:
panic("invalid state: AssembleKey cannot be called on an assembler that's already finished")
}
ma.state = maState_midKey
return (*_{{ .Type | TypeSymbol }}__ReprKeyAssembler)(ma)
}
func (ma *_{{ .Type | TypeSymbol }}__ReprAssembler) AssembleValue() datamodel.NodeAssembler {
switch ma.state {
case maState_initial:
panic("invalid state: AssembleValue cannot be called when no key is primed")
case maState_midKey:
panic("invalid state: AssembleValue cannot be called when in the middle of assembling a key")
case maState_expectValue:
// carry on
case maState_midValue:
panic("invalid state: AssembleValue cannot be called when in the middle of assembling another value")
case maState_finished:
panic("invalid state: AssembleValue cannot be called on an assembler that's already finished")
}
ma.state = maState_midValue
switch ma.f {
{{- range $i, $field := .Type.Fields }}
case {{ $i }}:
{{- if $field.IsMaybe }}
ma.ca_{{ $field | FieldSymbolLower }}.w = {{if not (MaybeUsesPtr $field.Type) }}&{{end}}ma.w.{{ $field | FieldSymbolLower }}.v
ma.ca_{{ $field | FieldSymbolLower }}.m = &ma.w.{{ $field | FieldSymbolLower }}.m
{{if $field.IsNullable }}ma.w.{{ $field | FieldSymbolLower }}.m = allowNull{{end}}
{{- else}}
ma.ca_{{ $field | FieldSymbolLower }}.w = &ma.w.{{ $field | FieldSymbolLower }}
ma.ca_{{ $field | FieldSymbolLower }}.m = &ma.cm
{{- end}}
return &ma.ca_{{ $field | FieldSymbolLower }}
{{- end}}
default:
panic("unreachable")
}
}
func (ma *_{{ .Type | TypeSymbol }}__ReprAssembler) Finish() error {
switch ma.state {
case maState_initial:
// carry on
case maState_midKey:
panic("invalid state: Finish cannot be called when in the middle of assembling a key")
case maState_expectValue:
panic("invalid state: Finish cannot be called when expecting start of value assembly")
case maState_midValue:
if !ma.valueFinishTidy() {
panic("invalid state: Finish cannot be called when in the middle of assembling a value")
} // if tidy success: carry on
case maState_finished:
panic("invalid state: Finish cannot be called on an assembler that's already finished")
}
if ma.s & fieldBits__{{ $type | TypeSymbol }}_sufficient != fieldBits__{{ $type | TypeSymbol }}_sufficient {
err := schema.ErrMissingRequiredField{Missing: make([]string, 0)}
{{- range $i, $field := .Type.Fields }}
{{- if not $field.IsMaybe}}
if ma.s & fieldBit__{{ $type | TypeSymbol }}_{{ $field | FieldSymbolUpper }} == 0 {
{{- if $field | $type.RepresentationStrategy.FieldHasRename }}
err.Missing = append(err.Missing, "{{ $field.Name }} (serial:\"{{ $field | $type.RepresentationStrategy.GetFieldKey }}\")")
{{- else}}
err.Missing = append(err.Missing, "{{ $field.Name }}")
{{- end}}
}
{{- end}}
{{- end}}
return err
}
ma.state = maState_finished
*ma.m = schema.Maybe_Value
return nil
}
func (ma *_{{ .Type | TypeSymbol }}__ReprAssembler) KeyPrototype() datamodel.NodePrototype {
return _String__Prototype{}
}
func (ma *_{{ .Type | TypeSymbol }}__ReprAssembler) ValuePrototype(k string) datamodel.NodePrototype {
panic("todo structbuilder mapassembler repr valueprototype")
}
`, w, g.AdjCfg, g)
}
func (g structReprMapReprBuilderGenerator) emitKeyAssembler(w io.Writer) {
doTemplate(`
type _{{ .Type | TypeSymbol }}__ReprKeyAssembler _{{ .Type | TypeSymbol }}__ReprAssembler
`, w, g.AdjCfg, g)
stubs := mixins.StringAssemblerTraits{
PkgName: g.PkgName,
TypeName: g.TypeName + ".KeyAssembler", // ".Repr" is already in `g.TypeName`, so don't stutter the "Repr" part.
AppliedPrefix: "_" + g.AdjCfg.TypeSymbol(g.Type) + "__ReprKey",
}
// This key assembler can disregard any idea of complex keys because it's at the representation level!
// Map keys must always be plain strings at the representation level.
stubs.EmitNodeAssemblerMethodBeginMap(w)
stubs.EmitNodeAssemblerMethodBeginList(w)
stubs.EmitNodeAssemblerMethodAssignNull(w)
stubs.EmitNodeAssemblerMethodAssignBool(w)
stubs.EmitNodeAssemblerMethodAssignInt(w)
stubs.EmitNodeAssemblerMethodAssignFloat(w)
doTemplate(`
func (ka *_{{ .Type | TypeSymbol }}__ReprKeyAssembler) AssignString(k string) error {
if ka.state != maState_midKey {
panic("misuse: KeyAssembler held beyond its valid lifetime")
}
{{- if .Type.Fields }}
switch k {
{{- $type := .Type -}} {{- /* ranging modifies dot, unhelpfully */ -}}
{{- range $i, $field := .Type.Fields }}
case "{{ $field | $type.RepresentationStrategy.GetFieldKey }}":
if ka.s & fieldBit__{{ $type | TypeSymbol }}_{{ $field | FieldSymbolUpper }} != 0 {
return datamodel.ErrRepeatedMapKey{Key: &fieldName__{{ $type | TypeSymbol }}_{{ $field | FieldSymbolUpper }}_serial}
}
ka.s += fieldBit__{{ $type | TypeSymbol }}_{{ $field | FieldSymbolUpper }}
ka.state = maState_expectValue
ka.f = {{ $i }}
return nil
{{- end }}
}
{{- end }}
return schema.ErrInvalidKey{TypeName:"{{ .PkgName }}.{{ .Type.Name }}.Repr", Key:&_String{k}}
}
`, w, g.AdjCfg, g)
stubs.EmitNodeAssemblerMethodAssignBytes(w)
stubs.EmitNodeAssemblerMethodAssignLink(w)
doTemplate(`
func (ka *_{{ .Type | TypeSymbol }}__ReprKeyAssembler) AssignNode(v datamodel.Node) error {
if v2, err := v.AsString(); err != nil {
return err
} else {
return ka.AssignString(v2)
}
}
func (_{{ .Type | TypeSymbol }}__ReprKeyAssembler) Prototype() datamodel.NodePrototype {
return _String__Prototype{}
}
`, w, g.AdjCfg, g)
}