forked from mirror/go-json
397 lines
12 KiB
Go
397 lines
12 KiB
Go
package main
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"path/filepath"
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"runtime"
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"strings"
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"text/template"
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)
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type opType struct {
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Op string
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IndentOp string
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Code string
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}
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type headType struct {
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Head string
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PtrHead string
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AnonymousHead string
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AnonymousPtrHead string
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OmitEmptyHead string
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OmitEmptyPtrHead string
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AnonymousOmitEmptyHead string
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AnonymousOmitEmptyPtrHead string
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StringTagHead string
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StringTagPtrHead string
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AnonymousStringTagHead string
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AnonymousStringTagPtrHead string
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}
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type fieldType struct {
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Field string
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OmitEmptyField string
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StringTagField string
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}
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func _main() error {
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tmpl, err := template.New("").Parse(`// Code generated by cmd/generator. DO NOT EDIT!
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package json
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type codeType int
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const (
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{{- range $index, $type := .CodeTypes }}
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code{{ $type }} codeType = {{ $index }}
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{{- end }}
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)
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type opType int
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const (
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{{- range $index, $type := .OpTypes }}
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op{{ $type.Op }} opType = {{ $index }}
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{{- end }}
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)
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func (t opType) String() string {
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switch t {
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{{- range $type := .OpTypes }}
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case op{{ $type.Op }}:
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return "{{ $type.Op }}"
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{{- end }}
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}
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return ""
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}
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func (t opType) codeType() codeType {
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switch t {
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{{- range $type := .OpTypes }}
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case op{{ $type.Op }}:
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return code{{ $type.Code }}
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{{- end }}
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}
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return codeOp
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}
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func (t opType) toIndent() opType {
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switch t {
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{{- range $type := .OpTypes }}
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case op{{ $type.Op }}:
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return op{{ $type.IndentOp }}
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{{- end }}
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}
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return t
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}
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func (t opType) headToPtrHead() opType {
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switch t {
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{{- range $type := .HeadTypes }}
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case op{{ $type.Head }}:
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return op{{ $type.PtrHead }}
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case op{{ $type.AnonymousHead }}:
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return op{{ $type.AnonymousPtrHead }}
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case op{{ $type.OmitEmptyHead }}:
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return op{{ $type.OmitEmptyPtrHead }}
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case op{{ $type.AnonymousOmitEmptyHead }}:
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return op{{ $type.AnonymousOmitEmptyPtrHead }}
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case op{{ $type.StringTagHead }}:
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return op{{ $type.StringTagPtrHead }}
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case op{{ $type.AnonymousStringTagHead }}:
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return op{{ $type.AnonymousStringTagPtrHead }}
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{{- end }}
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}
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return t
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}
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func (t opType) headToAnonymousHead() opType {
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switch t {
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{{- range $type := .HeadTypes }}
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case op{{ $type.Head }}:
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return op{{ $type.AnonymousHead }}
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case op{{ $type.PtrHead }}:
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return op{{ $type.AnonymousPtrHead }}
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case op{{ $type.OmitEmptyHead }}:
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return op{{ $type.AnonymousOmitEmptyHead }}
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case op{{ $type.OmitEmptyPtrHead }}:
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return op{{ $type.AnonymousOmitEmptyPtrHead }}
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case op{{ $type.StringTagHead }}:
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return op{{ $type.AnonymousStringTagHead }}
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case op{{ $type.StringTagPtrHead }}:
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return op{{ $type.AnonymousStringTagPtrHead }}
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{{- end }}
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}
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return t
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}
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func (t opType) headToOmitEmptyHead() opType {
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switch t {
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{{- range $type := .HeadTypes }}
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case op{{ $type.Head }}:
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return op{{ $type.OmitEmptyHead }}
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case op{{ $type.PtrHead }}:
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return op{{ $type.OmitEmptyPtrHead }}
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{{- end }}
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}
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return t
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}
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func (t opType) headToStringTagHead() opType {
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switch t {
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{{- range $type := .HeadTypes }}
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case op{{ $type.Head }}:
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return op{{ $type.StringTagHead }}
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case op{{ $type.PtrHead }}:
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return op{{ $type.StringTagPtrHead }}
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{{- end }}
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}
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return t
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}
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func (t opType) ptrHeadToHead() opType {
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switch t {
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{{- range $type := .HeadTypes }}
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case op{{ $type.PtrHead }}:
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return op{{ $type.Head }}
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case op{{ $type.AnonymousPtrHead }}:
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return op{{ $type.AnonymousHead }}
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case op{{ $type.OmitEmptyPtrHead }}:
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return op{{ $type.OmitEmptyHead }}
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case op{{ $type.AnonymousOmitEmptyPtrHead }}:
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return op{{ $type.AnonymousOmitEmptyHead }}
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case op{{ $type.StringTagPtrHead }}:
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return op{{ $type.StringTagHead }}
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case op{{ $type.AnonymousStringTagPtrHead }}:
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return op{{ $type.AnonymousStringTagHead }}
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{{- end }}
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}
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return t
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}
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func (t opType) fieldToOmitEmptyField() opType {
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switch t {
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{{- range $type := .FieldTypes }}
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case op{{ $type.Field }}:
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return op{{ $type.OmitEmptyField }}
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{{- end }}
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}
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return t
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}
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func (t opType) fieldToStringTagField() opType {
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switch t {
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{{- range $type := .FieldTypes }}
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case op{{ $type.Field }}:
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return op{{ $type.StringTagField }}
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{{- end }}
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}
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return t
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}
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`)
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if err != nil {
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return err
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}
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codeTypes := []string{
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"Op",
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"ArrayHead",
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"ArrayElem",
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"SliceHead",
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"SliceElem",
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"MapHead",
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"MapKey",
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"MapValue",
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"StructFieldRecursive",
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"StructField",
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}
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primitiveTypes := []string{
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"int", "int8", "int16", "int32", "int64",
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"uint", "uint8", "uint16", "uint32", "uint64",
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"float32", "float64", "bool", "string", "bytes",
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"array", "map", "mapLoad", "slice", "struct", "MarshalJSON", "MarshalText",
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}
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primitiveTypesUpper := []string{}
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for _, typ := range primitiveTypes {
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primitiveTypesUpper = append(primitiveTypesUpper, strings.ToUpper(string(typ[0]))+typ[1:])
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}
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opTypes := []opType{
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{"End", "EndIndent", "Op"},
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{"Interface", "InterfaceIndent", "Op"},
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{"InterfaceEnd", "InterfaceEndIndent", "Op"},
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{"Ptr", "PtrIndent", "Op"},
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{"SliceHead", "SliceHeadIndent", "SliceHead"},
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{"RootSliceHead", "RootSliceHeadIndent", "SliceHead"},
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{"SliceElem", "SliceElemIndent", "SliceElem"},
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{"RootSliceElem", "RootSliceElemIndent", "SliceElem"},
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{"SliceEnd", "SliceEndIndent", "Op"},
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{"ArrayHead", "ArrayHeadIndent", "ArrayHead"},
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{"ArrayElem", "ArrayElemIndent", "ArrayElem"},
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{"ArrayEnd", "ArrayEndIndent", "Op"},
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{"MapHead", "MapHeadIndent", "MapHead"},
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{"MapHeadLoad", "MapHeadLoadIndent", "MapHead"},
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{"RootMapHead", "RootMapHeadIndent", "MapHead"},
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{"MapKey", "MapKeyIndent", "MapKey"},
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{"RootMapKey", "RootMapKeyIndent", "MapKey"},
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{"MapValue", "MapValueIndent", "MapValue"},
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{"MapEnd", "MapEndIndent", "Op"},
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{"StructFieldHead", "StructFieldHeadIndent", "StructField"},
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{"StructFieldHeadOmitEmpty", "StructFieldHeadOmitEmptyIndent", "StructField"},
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{"StructFieldHeadStringTag", "StructFieldHeadStringTagIndent", "StructField"},
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{"StructFieldAnonymousHead", "StructFieldAnonymousHeadIndent", "StructField"},
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{"StructFieldAnonymousHeadOmitEmpty", "StructFieldAnonymousHeadOmitEmptyIndent", "StructField"},
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{"StructFieldPtrAnonymousHeadOmitEmpty", "StructFieldPtrAnonymousHeadOmitEmptyIndent", "StructField"},
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{"StructFieldAnonymousHeadStringTag", "StructFieldAnonymousHeadStringTagIndent", "StructField"},
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{"StructFieldPtrAnonymousHeadStringTag", "StructFieldPtrAnonymousHeadStringTagIndent", "StructField"},
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{"StructFieldPtrHead", "StructFieldPtrHeadIndent", "StructField"},
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{"StructFieldPtrHeadOmitEmpty", "StructFieldPtrHeadOmitEmptyIndent", "StructField"},
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{"StructFieldPtrHeadStringTag", "StructFieldPtrHeadStringTagIndent", "StructField"},
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{"StructFieldPtrAnonymousHead", "StructFieldPtrAnonymousHeadIndent", "StructField"},
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{"StructField", "StructFieldIndent", "StructField"},
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{"StructFieldOmitEmpty", "StructFieldOmitEmptyIndent", "StructField"},
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{"StructFieldStringTag", "StructFieldStringTagIndent", "StructField"},
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{"StructFieldRecursive", "StructFieldRecursiveIndent", "StructFieldRecursive"},
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{"StructFieldRecursiveEnd", "StructFieldRecursiveEndIndent", "Op"},
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{"StructEnd", "StructEndIndent", "StructField"},
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{"StructAnonymousEnd", "StructAnonymousEndIndent", "StructField"},
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}
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for _, typ := range primitiveTypesUpper {
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opTypes = append(opTypes, opType{
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Op: typ,
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IndentOp: fmt.Sprintf("%sIndent", typ),
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Code: "Op",
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})
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}
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for _, prefix := range []string{
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"StructFieldHead",
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"StructFieldHeadOmitEmpty",
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"StructFieldHeadStringTag",
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"StructFieldAnonymousHead",
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"StructFieldAnonymousHeadOmitEmpty",
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"StructFieldAnonymousHeadStringTag",
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"StructFieldPtrHead",
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"StructFieldPtrHeadOmitEmpty",
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"StructFieldPtrHeadStringTag",
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"StructFieldPtrAnonymousHead",
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"StructFieldPtrAnonymousHeadOmitEmpty",
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"StructFieldPtrAnonymousHeadStringTag",
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"StructField",
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"StructFieldOmitEmpty",
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"StructFieldStringTag",
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} {
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for _, typ := range primitiveTypesUpper {
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opTypes = append(opTypes, opType{
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Op: fmt.Sprintf("%s%s", prefix, typ),
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IndentOp: fmt.Sprintf("%s%sIndent", prefix, typ),
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Code: "StructField",
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})
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}
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}
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for _, typ := range opTypes {
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opTypes = append(opTypes, opType{
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Op: typ.IndentOp,
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IndentOp: typ.IndentOp,
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Code: typ.Code,
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})
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}
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base := headType{
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Head: "StructFieldHead",
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PtrHead: "StructFieldPtrHead",
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AnonymousHead: "StructFieldAnonymousHead",
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AnonymousPtrHead: "StructFieldPtrAnonymousHead",
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OmitEmptyHead: "StructFieldHeadOmitEmpty",
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OmitEmptyPtrHead: "StructFieldPtrHeadOmitEmpty",
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StringTagHead: "StructFieldHeadStringTag",
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StringTagPtrHead: "StructFieldPtrHeadStringTag",
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AnonymousOmitEmptyHead: "StructFieldAnonymousHeadOmitEmpty",
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AnonymousOmitEmptyPtrHead: "StructFieldPtrAnonymousHeadOmitEmpty",
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AnonymousStringTagHead: "StructFieldAnonymousHeadStringTag",
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AnonymousStringTagPtrHead: "StructFieldPtrAnonymousHeadStringTag",
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}
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headTypes := []headType{base}
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for _, prim := range primitiveTypesUpper {
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headTypes = append(headTypes, headType{
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Head: fmt.Sprintf("%s%s", base.Head, prim),
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PtrHead: fmt.Sprintf("%s%s", base.PtrHead, prim),
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AnonymousHead: fmt.Sprintf("%s%s", base.AnonymousHead, prim),
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AnonymousPtrHead: fmt.Sprintf("%s%s", base.AnonymousPtrHead, prim),
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OmitEmptyHead: fmt.Sprintf("%s%s", base.OmitEmptyHead, prim),
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OmitEmptyPtrHead: fmt.Sprintf("%s%s", base.OmitEmptyPtrHead, prim),
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AnonymousOmitEmptyHead: fmt.Sprintf("%s%s", base.AnonymousOmitEmptyHead, prim),
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AnonymousOmitEmptyPtrHead: fmt.Sprintf("%s%s", base.AnonymousOmitEmptyPtrHead, prim),
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StringTagHead: fmt.Sprintf("%s%s", base.StringTagHead, prim),
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StringTagPtrHead: fmt.Sprintf("%s%s", base.StringTagPtrHead, prim),
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AnonymousStringTagHead: fmt.Sprintf("%s%s", base.AnonymousStringTagHead, prim),
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AnonymousStringTagPtrHead: fmt.Sprintf("%s%s", base.AnonymousStringTagPtrHead, prim),
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})
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}
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for _, typ := range headTypes {
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headTypes = append(headTypes, headType{
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Head: fmt.Sprintf("%sIndent", typ.Head),
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PtrHead: fmt.Sprintf("%sIndent", typ.PtrHead),
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AnonymousHead: fmt.Sprintf("%sIndent", typ.AnonymousHead),
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AnonymousPtrHead: fmt.Sprintf("%sIndent", typ.AnonymousPtrHead),
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OmitEmptyHead: fmt.Sprintf("%sIndent", typ.OmitEmptyHead),
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OmitEmptyPtrHead: fmt.Sprintf("%sIndent", typ.OmitEmptyPtrHead),
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AnonymousOmitEmptyHead: fmt.Sprintf("%sIndent", typ.AnonymousOmitEmptyHead),
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AnonymousOmitEmptyPtrHead: fmt.Sprintf("%sIndent", typ.AnonymousOmitEmptyPtrHead),
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StringTagHead: fmt.Sprintf("%sIndent", typ.StringTagHead),
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StringTagPtrHead: fmt.Sprintf("%sIndent", typ.StringTagPtrHead),
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AnonymousStringTagHead: fmt.Sprintf("%sIndent", typ.AnonymousStringTagHead),
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AnonymousStringTagPtrHead: fmt.Sprintf("%sIndent", typ.AnonymousStringTagPtrHead),
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})
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}
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baseField := fieldType{
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Field: "StructField",
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OmitEmptyField: "StructFieldOmitEmpty",
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StringTagField: "StructFieldStringTag",
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}
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fieldTypes := []fieldType{baseField}
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for _, prim := range primitiveTypesUpper {
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fieldTypes = append(fieldTypes, fieldType{
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Field: fmt.Sprintf("%s%s", baseField.Field, prim),
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OmitEmptyField: fmt.Sprintf("%s%s", baseField.OmitEmptyField, prim),
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StringTagField: fmt.Sprintf("%s%s", baseField.StringTagField, prim),
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})
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}
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for _, typ := range fieldTypes {
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fieldTypes = append(fieldTypes, fieldType{
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Field: fmt.Sprintf("%sIndent", typ.Field),
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OmitEmptyField: fmt.Sprintf("%sIndent", typ.OmitEmptyField),
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StringTagField: fmt.Sprintf("%sIndent", typ.StringTagField),
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})
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}
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var b bytes.Buffer
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if err := tmpl.Execute(&b, struct {
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CodeTypes []string
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OpTypes []opType
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HeadTypes []headType
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FieldTypes []fieldType
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}{
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CodeTypes: codeTypes,
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OpTypes: opTypes,
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HeadTypes: headTypes,
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FieldTypes: fieldTypes,
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}); err != nil {
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return err
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}
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path := filepath.Join(repoRoot(), "encode_optype.go")
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return ioutil.WriteFile(path, b.Bytes(), 0644)
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}
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func repoRoot() string {
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_, file, _, _ := runtime.Caller(0)
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relativePathFromRepoRoot := filepath.Join("cmd", "generator")
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return strings.TrimSuffix(filepath.Dir(file), relativePathFromRepoRoot)
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}
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func main() {
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if err := _main(); err != nil {
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panic(err)
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}
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}
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