forked from mirror/go-json
607 lines
15 KiB
Go
607 lines
15 KiB
Go
package main
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import (
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"bytes"
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"fmt"
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"go/format"
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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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Code string
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Indent func() string
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Escaped func() string
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HeadToPtrHead func() string
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HeadToNPtrHead func() string
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HeadToAnonymousHead func() string
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HeadToOmitEmptyHead func() string
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HeadToStringTagHead func() string
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PtrHeadToHead func() string
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FieldToEnd func() string
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FieldToOmitEmptyEnd func() string
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FieldToStringTagEnd func() string
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FieldToOmitEmptyField func() string
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FieldToStringTagField func() string
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}
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func createOpType(op, code string) opType {
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return opType{
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Op: op,
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Code: code,
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Indent: func() string { return fmt.Sprintf("%sIndent", op) },
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Escaped: func() string { return op },
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HeadToPtrHead: func() string { return op },
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HeadToNPtrHead: func() string { return op },
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HeadToAnonymousHead: func() string { return op },
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HeadToOmitEmptyHead: func() string { return op },
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HeadToStringTagHead: func() string { return op },
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PtrHeadToHead: func() string { return op },
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FieldToEnd: func() string { return op },
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FieldToOmitEmptyEnd: func() string { return op },
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FieldToStringTagEnd: func() string { return op },
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FieldToOmitEmptyField: func() string { return op },
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FieldToStringTagField: func() string { return op },
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}
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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{{ call $type.Indent }}
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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) toEscaped() 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{{ call $type.Escaped }}
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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 := .OpTypes }}
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case op{{ $type.Op }}:
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return op{{ call $type.HeadToPtrHead }}
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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) headToNPtrHead() 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{{ call $type.HeadToNPtrHead }}
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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 := .OpTypes }}
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case op{{ $type.Op }}:
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return op{{ call $type.HeadToAnonymousHead }}
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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 := .OpTypes }}
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case op{{ $type.Op }}:
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return op{{ call $type.HeadToOmitEmptyHead }}
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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 := .OpTypes }}
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case op{{ $type.Op }}:
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return op{{ call $type.HeadToStringTagHead }}
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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 := .OpTypes }}
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case op{{ $type.Op }}:
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return op{{ call $type.PtrHeadToHead }}
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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) fieldToEnd() 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{{ call $type.FieldToEnd }}
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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) fieldToOmitEmptyEnd() 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{{ call $type.FieldToOmitEmptyEnd }}
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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) fieldToStringTagEnd() 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{{ call $type.FieldToStringTagEnd }}
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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 := .OpTypes }}
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case op{{ $type.Op }}:
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return op{{ call $type.FieldToOmitEmptyField }}
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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 := .OpTypes }}
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case op{{ $type.Op }}:
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return op{{ call $type.FieldToStringTagField }}
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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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"MapEnd",
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"StructFieldRecursive",
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"StructField",
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"StructEnd",
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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", "escapedString", "bytes",
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"array", "map", "mapLoad", "slice", "struct", "MarshalJSON", "MarshalText", "recursive",
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"intString", "int8String", "int16String", "int32String", "int64String",
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"uintString", "uint8String", "uint16String", "uint32String", "uint64String",
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"intPtr", "int8Ptr", "int16Ptr", "int32Ptr", "int64Ptr",
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"uintPtr", "uint8Ptr", "uint16Ptr", "uint32Ptr", "uint64Ptr",
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"float32Ptr", "float64Ptr", "boolPtr", "stringPtr", "escapedStringPtr", "bytesPtr",
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"intNPtr", "int8NPtr", "int16NPtr", "int32NPtr", "int64NPtr",
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"uintNPtr", "uint8NPtr", "uint16NPtr", "uint32NPtr", "uint64NPtr",
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"float32NPtr", "float64NPtr", "boolNPtr", "stringNPtr", "escapedStringNPtr", "bytesNPtr",
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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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createOpType("End", "Op"),
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createOpType("Interface", "Op"),
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createOpType("InterfaceEnd", "Op"),
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createOpType("Ptr", "Op"),
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createOpType("NPtr", "Op"),
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createOpType("SliceHead", "SliceHead"),
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createOpType("RootSliceHead", "SliceHead"),
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createOpType("SliceElem", "SliceElem"),
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createOpType("RootSliceElem", "SliceElem"),
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createOpType("SliceEnd", "Op"),
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createOpType("ArrayHead", "ArrayHead"),
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createOpType("ArrayElem", "ArrayElem"),
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createOpType("ArrayEnd", "Op"),
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createOpType("MapHead", "MapHead"),
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createOpType("MapHeadLoad", "MapHead"),
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createOpType("MapKey", "MapKey"),
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createOpType("MapValue", "MapValue"),
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createOpType("MapEnd", "Op"),
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createOpType("StructFieldRecursiveEnd", "Op"),
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createOpType("StructAnonymousEnd", "StructEnd"),
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}
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for _, typ := range primitiveTypesUpper {
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typ := typ
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optype := createOpType(typ, "Op")
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switch typ {
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case "String", "StringPtr", "StringNPtr":
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optype.Escaped = func() string {
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return fmt.Sprintf("Escaped%s", typ)
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}
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}
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opTypes = append(opTypes, optype)
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}
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for _, escapedOrNot := range []string{"", "Escaped"} {
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for _, ptrOrNot := range []string{"", "Ptr", "NPtr"} {
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for _, headType := range []string{"", "Anonymous"} {
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for _, opt := range []string{"", "OmitEmpty", "StringTag"} {
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for _, typ := range append(primitiveTypesUpper, "") {
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escapedOrNot := escapedOrNot
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ptrOrNot := ptrOrNot
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headType := headType
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opt := opt
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typ := typ
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op := fmt.Sprintf(
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"Struct%sField%s%sHead%s%s",
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escapedOrNot,
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ptrOrNot,
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headType,
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opt,
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typ,
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)
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opTypes = append(opTypes, opType{
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Op: op,
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Code: "StructField",
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Indent: func() string { return fmt.Sprintf("%sIndent", op) },
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Escaped: func() string {
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switch typ {
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case "String", "StringPtr", "StringNPtr":
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return fmt.Sprintf(
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"StructEscapedField%s%sHead%sEscaped%s",
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ptrOrNot,
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headType,
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opt,
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typ,
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)
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}
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return fmt.Sprintf(
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"StructEscapedField%s%sHead%s%s",
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ptrOrNot,
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headType,
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opt,
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typ,
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)
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},
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HeadToPtrHead: func() string {
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return fmt.Sprintf(
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"Struct%sFieldPtr%sHead%s%s",
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escapedOrNot,
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headType,
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opt,
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typ,
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)
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},
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HeadToNPtrHead: func() string {
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return fmt.Sprintf(
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"Struct%sFieldNPtr%sHead%s%s",
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escapedOrNot,
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headType,
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opt,
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typ,
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)
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},
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HeadToAnonymousHead: func() string {
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return fmt.Sprintf(
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"Struct%sField%sAnonymousHead%s%s",
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escapedOrNot,
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ptrOrNot,
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opt,
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typ,
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)
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},
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HeadToOmitEmptyHead: func() string {
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return fmt.Sprintf(
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"Struct%sField%s%sHeadOmitEmpty%s",
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escapedOrNot,
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ptrOrNot,
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headType,
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typ,
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)
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},
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HeadToStringTagHead: func() string {
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return fmt.Sprintf(
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"Struct%sField%s%sHeadStringTag%s",
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escapedOrNot,
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ptrOrNot,
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headType,
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typ,
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)
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},
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PtrHeadToHead: func() string {
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return fmt.Sprintf(
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"Struct%sField%sHead%s%s",
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escapedOrNot,
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headType,
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opt,
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typ,
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)
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},
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FieldToEnd: func() string { return op },
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FieldToOmitEmptyEnd: func() string { return op },
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FieldToStringTagEnd: func() string { return op },
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FieldToOmitEmptyField: func() string { return op },
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FieldToStringTagField: func() string { return op },
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})
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}
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}
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}
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}
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}
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for _, escapedOrNot := range []string{"", "Escaped"} {
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for _, opt := range []string{"", "OmitEmpty", "StringTag"} {
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for _, typ := range append(primitiveTypesUpper, "") {
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escapedOrNot := escapedOrNot
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opt := opt
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typ := typ
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op := fmt.Sprintf(
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"Struct%sField%s%s",
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escapedOrNot,
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opt,
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typ,
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)
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opTypes = append(opTypes, opType{
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Op: op,
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Code: "StructField",
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Indent: func() string { return fmt.Sprintf("%sIndent", op) },
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Escaped: func() string {
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switch typ {
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case "String", "StringPtr", "StringNPtr":
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return fmt.Sprintf(
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"StructEscapedField%sEscaped%s",
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opt,
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typ,
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)
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}
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return fmt.Sprintf(
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"StructEscapedField%s%s",
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opt,
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typ,
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)
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},
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HeadToPtrHead: func() string { return op },
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HeadToNPtrHead: func() string { return op },
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HeadToAnonymousHead: func() string { return op },
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HeadToOmitEmptyHead: func() string { return op },
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HeadToStringTagHead: func() string { return op },
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PtrHeadToHead: func() string { return op },
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FieldToEnd: func() string {
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switch typ {
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case "Array", "Map", "MapLoad", "Slice", "Struct", "Recursive":
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return op
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}
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return fmt.Sprintf(
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"Struct%sEnd%s%s",
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escapedOrNot,
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opt,
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typ,
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)
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},
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FieldToOmitEmptyEnd: func() string {
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switch typ {
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case "Array", "Map", "MapLoad", "Slice", "Struct", "Recursive":
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return op
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}
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return fmt.Sprintf(
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"Struct%sEndOmitEmpty%s",
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escapedOrNot,
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typ,
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)
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},
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FieldToStringTagEnd: func() string {
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switch typ {
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case "Array", "Map", "MapLoad", "Slice", "Struct", "Recursive":
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return op
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}
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return fmt.Sprintf(
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"Struct%sEndStringTag%s",
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escapedOrNot,
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typ,
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)
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},
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FieldToOmitEmptyField: func() string {
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return fmt.Sprintf(
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"Struct%sFieldOmitEmpty%s",
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escapedOrNot,
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typ,
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)
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},
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FieldToStringTagField: func() string {
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return fmt.Sprintf(
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"Struct%sFieldStringTag%s",
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escapedOrNot,
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typ,
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)
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},
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})
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}
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}
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}
|
|
for _, escapedOrNot := range []string{"", "Escaped"} {
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for _, opt := range []string{"", "OmitEmpty", "StringTag"} {
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for _, typ := range append(primitiveTypesUpper, "") {
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escapedOrNot := escapedOrNot
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opt := opt
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typ := typ
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|
|
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op := fmt.Sprintf(
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"Struct%sEnd%s%s",
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escapedOrNot,
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opt,
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typ,
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)
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opTypes = append(opTypes, opType{
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Op: op,
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Code: "StructEnd",
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Indent: func() string { return fmt.Sprintf("%sIndent", op) },
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Escaped: func() string {
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switch typ {
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case "String", "StringPtr", "StringNPtr":
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return fmt.Sprintf(
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"StructEscapedEnd%sEscaped%s",
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opt,
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typ,
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)
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}
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return fmt.Sprintf(
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"StructEscapedEnd%s%s",
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opt,
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typ,
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)
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},
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HeadToPtrHead: func() string { return op },
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HeadToNPtrHead: func() string { return op },
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HeadToAnonymousHead: func() string { return op },
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HeadToOmitEmptyHead: func() string { return op },
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HeadToStringTagHead: func() string { return op },
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PtrHeadToHead: func() string { return op },
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FieldToEnd: func() string { return op },
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FieldToOmitEmptyEnd: func() string { return op },
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FieldToStringTagEnd: func() string { return op },
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FieldToOmitEmptyField: func() string { return op },
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FieldToStringTagField: func() string { return op },
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})
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}
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}
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}
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indentOpTypes := []opType{}
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|
for _, typ := range opTypes {
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typ := typ
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indentOpTypes = append(indentOpTypes, opType{
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Op: fmt.Sprintf("%sIndent", typ.Op),
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Code: typ.Code,
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Indent: func() string { return fmt.Sprintf("%sIndent", typ.Op) },
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Escaped: func() string { return fmt.Sprintf("%sIndent", typ.Escaped()) },
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HeadToPtrHead: func() string {
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return fmt.Sprintf("%sIndent", typ.HeadToPtrHead())
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},
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HeadToNPtrHead: func() string {
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return fmt.Sprintf("%sIndent", typ.HeadToNPtrHead())
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},
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HeadToAnonymousHead: func() string {
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return fmt.Sprintf("%sIndent", typ.HeadToAnonymousHead())
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},
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HeadToOmitEmptyHead: func() string {
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return fmt.Sprintf("%sIndent", typ.HeadToOmitEmptyHead())
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},
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HeadToStringTagHead: func() string {
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return fmt.Sprintf("%sIndent", typ.HeadToStringTagHead())
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},
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PtrHeadToHead: func() string {
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return fmt.Sprintf("%sIndent", typ.PtrHeadToHead())
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|
},
|
|
FieldToOmitEmptyField: func() string {
|
|
return fmt.Sprintf("%sIndent", typ.FieldToOmitEmptyField())
|
|
},
|
|
FieldToStringTagField: func() string {
|
|
return fmt.Sprintf("%sIndent", typ.FieldToStringTagField())
|
|
},
|
|
FieldToEnd: func() string {
|
|
return fmt.Sprintf("%sIndent", typ.FieldToEnd())
|
|
},
|
|
FieldToOmitEmptyEnd: func() string {
|
|
return fmt.Sprintf("%sIndent", typ.FieldToOmitEmptyEnd())
|
|
},
|
|
FieldToStringTagEnd: func() string {
|
|
return fmt.Sprintf("%sIndent", typ.FieldToStringTagEnd())
|
|
},
|
|
})
|
|
}
|
|
var b bytes.Buffer
|
|
if err := tmpl.Execute(&b, struct {
|
|
CodeTypes []string
|
|
OpTypes []opType
|
|
}{
|
|
CodeTypes: codeTypes,
|
|
OpTypes: append(opTypes, indentOpTypes...),
|
|
}); err != nil {
|
|
return err
|
|
}
|
|
path := filepath.Join(repoRoot(), "encode_optype.go")
|
|
buf, err := format.Source(b.Bytes())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return ioutil.WriteFile(path, buf, 0644)
|
|
}
|
|
|
|
func repoRoot() string {
|
|
_, file, _, _ := runtime.Caller(0)
|
|
relativePathFromRepoRoot := filepath.Join("cmd", "generator")
|
|
return strings.TrimSuffix(filepath.Dir(file), relativePathFromRepoRoot)
|
|
}
|
|
|
|
func main() {
|
|
if err := _main(); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|