githaven-fork/vendor/github.com/go-swagger/go-swagger/codescan/parameters.go
6543 d1353e1f7c
Vendor Update (#14496)
* update code.gitea.io/sdk/gitea v0.13.1 -> v0.13.2

* update github.com/go-swagger/go-swagger v0.25.0 -> v0.26.0

* update github.com/google/uuid v1.1.2 -> v1.2.0

* update github.com/klauspost/compress v1.11.3 -> v1.11.7

* update github.com/lib/pq 083382b7e6fc -> v1.9.0

* update github.com/markbates/goth v1.65.0 -> v1.66.1

* update github.com/mattn/go-sqlite3 v1.14.4 -> v1.14.6

* update github.com/mgechev/revive 246eac737dc7 -> v1.0.3

* update github.com/minio/minio-go/v7 v7.0.6 -> v7.0.7

* update github.com/niklasfasching/go-org v1.3.2 -> v1.4.0

* update github.com/olivere/elastic/v7 v7.0.21 -> v7.0.22

* update github.com/pquerna/otp v1.2.0 -> v1.3.0

* update github.com/xanzy/go-gitlab v0.39.0 -> v0.42.0

* update github.com/yuin/goldmark v1.2.1 -> v1.3.1
2021-01-28 17:56:38 +01:00

493 lines
16 KiB
Go
Vendored

package codescan
import (
"fmt"
"go/ast"
"go/types"
"strings"
"golang.org/x/tools/go/ast/astutil"
"github.com/pkg/errors"
"github.com/go-openapi/spec"
)
type paramTypable struct {
param *spec.Parameter
}
func (pt paramTypable) Level() int { return 0 }
func (pt paramTypable) Typed(tpe, format string) {
pt.param.Typed(tpe, format)
}
func (pt paramTypable) SetRef(ref spec.Ref) {
pt.param.Ref = ref
}
func (pt paramTypable) Items() swaggerTypable {
bdt, schema := bodyTypable(pt.param.In, pt.param.Schema)
if bdt != nil {
pt.param.Schema = schema
return bdt
}
if pt.param.Items == nil {
pt.param.Items = new(spec.Items)
}
pt.param.Type = "array"
return itemsTypable{pt.param.Items, 1}
}
func (pt paramTypable) Schema() *spec.Schema {
if pt.param.In != "body" {
return nil
}
if pt.param.Schema == nil {
pt.param.Schema = new(spec.Schema)
}
return pt.param.Schema
}
func (pt paramTypable) AddExtension(key string, value interface{}) {
if pt.param.In == "body" {
pt.Schema().AddExtension(key, value)
} else {
pt.param.AddExtension(key, value)
}
}
func (pt paramTypable) WithEnum(values ...interface{}) {
pt.param.WithEnum(values...)
}
type itemsTypable struct {
items *spec.Items
level int
}
func (pt itemsTypable) Level() int { return pt.level }
func (pt itemsTypable) Typed(tpe, format string) {
pt.items.Typed(tpe, format)
}
func (pt itemsTypable) SetRef(ref spec.Ref) {
pt.items.Ref = ref
}
func (pt itemsTypable) Schema() *spec.Schema {
return nil
}
func (pt itemsTypable) Items() swaggerTypable {
if pt.items.Items == nil {
pt.items.Items = new(spec.Items)
}
pt.items.Type = "array"
return itemsTypable{pt.items.Items, pt.level + 1}
}
func (pt itemsTypable) AddExtension(key string, value interface{}) {
pt.items.AddExtension(key, value)
}
func (pt itemsTypable) WithEnum(values ...interface{}) {
pt.items.WithEnum(values...)
}
type paramValidations struct {
current *spec.Parameter
}
func (sv paramValidations) SetMaximum(val float64, exclusive bool) {
sv.current.Maximum = &val
sv.current.ExclusiveMaximum = exclusive
}
func (sv paramValidations) SetMinimum(val float64, exclusive bool) {
sv.current.Minimum = &val
sv.current.ExclusiveMinimum = exclusive
}
func (sv paramValidations) SetMultipleOf(val float64) { sv.current.MultipleOf = &val }
func (sv paramValidations) SetMinItems(val int64) { sv.current.MinItems = &val }
func (sv paramValidations) SetMaxItems(val int64) { sv.current.MaxItems = &val }
func (sv paramValidations) SetMinLength(val int64) { sv.current.MinLength = &val }
func (sv paramValidations) SetMaxLength(val int64) { sv.current.MaxLength = &val }
func (sv paramValidations) SetPattern(val string) { sv.current.Pattern = val }
func (sv paramValidations) SetUnique(val bool) { sv.current.UniqueItems = val }
func (sv paramValidations) SetCollectionFormat(val string) { sv.current.CollectionFormat = val }
func (sv paramValidations) SetEnum(val string) {
sv.current.Enum = parseEnum(val, &spec.SimpleSchema{Type: sv.current.Type, Format: sv.current.Format})
}
func (sv paramValidations) SetDefault(val interface{}) { sv.current.Default = val }
func (sv paramValidations) SetExample(val interface{}) { sv.current.Example = val }
type itemsValidations struct {
current *spec.Items
}
func (sv itemsValidations) SetMaximum(val float64, exclusive bool) {
sv.current.Maximum = &val
sv.current.ExclusiveMaximum = exclusive
}
func (sv itemsValidations) SetMinimum(val float64, exclusive bool) {
sv.current.Minimum = &val
sv.current.ExclusiveMinimum = exclusive
}
func (sv itemsValidations) SetMultipleOf(val float64) { sv.current.MultipleOf = &val }
func (sv itemsValidations) SetMinItems(val int64) { sv.current.MinItems = &val }
func (sv itemsValidations) SetMaxItems(val int64) { sv.current.MaxItems = &val }
func (sv itemsValidations) SetMinLength(val int64) { sv.current.MinLength = &val }
func (sv itemsValidations) SetMaxLength(val int64) { sv.current.MaxLength = &val }
func (sv itemsValidations) SetPattern(val string) { sv.current.Pattern = val }
func (sv itemsValidations) SetUnique(val bool) { sv.current.UniqueItems = val }
func (sv itemsValidations) SetCollectionFormat(val string) { sv.current.CollectionFormat = val }
func (sv itemsValidations) SetEnum(val string) {
sv.current.Enum = parseEnum(val, &spec.SimpleSchema{Type: sv.current.Type, Format: sv.current.Format})
}
func (sv itemsValidations) SetDefault(val interface{}) { sv.current.Default = val }
func (sv itemsValidations) SetExample(val interface{}) { sv.current.Example = val }
type parameterBuilder struct {
ctx *scanCtx
decl *entityDecl
postDecls []*entityDecl
}
func (p *parameterBuilder) Build(operations map[string]*spec.Operation) error {
// check if there is a swagger:parameters tag that is followed by one or more words,
// these words are the ids of the operations this parameter struct applies to
// once type name is found convert it to a schema, by looking up the schema in the
// parameters dictionary that got passed into this parse method
for _, opid := range p.decl.OperationIDS() {
operation, ok := operations[opid]
if !ok {
operation = new(spec.Operation)
operations[opid] = operation
operation.ID = opid
}
debugLog("building parameters for: %s", opid)
// analyze struct body for fields etc
// each exported struct field:
// * gets a type mapped to a go primitive
// * perhaps gets a format
// * has to document the validations that apply for the type and the field
// * when the struct field points to a model it becomes a ref: #/definitions/ModelName
// * comments that aren't tags is used as the description
if err := p.buildFromType(p.decl.Type, operation, make(map[string]spec.Parameter)); err != nil {
return err
}
}
return nil
}
func (p *parameterBuilder) buildFromType(otpe types.Type, op *spec.Operation, seen map[string]spec.Parameter) error {
switch tpe := otpe.(type) {
case *types.Pointer:
return p.buildFromType(tpe.Elem(), op, seen)
case *types.Named:
o := tpe.Obj()
switch stpe := o.Type().Underlying().(type) {
case *types.Struct:
debugLog("build from type %s: %T", tpe.Obj().Name(), otpe)
if decl, found := p.ctx.DeclForType(o.Type()); found {
return p.buildFromStruct(decl, stpe, op, seen)
}
return p.buildFromStruct(p.decl, stpe, op, seen)
default:
return errors.Errorf("unhandled type (%T): %s", stpe, o.Type().Underlying().String())
}
default:
return errors.Errorf("unhandled type (%T): %s", otpe, tpe.String())
}
}
func (p *parameterBuilder) buildFromField(fld *types.Var, tpe types.Type, typable swaggerTypable, seen map[string]spec.Parameter) error {
debugLog("build from field %s: %T", fld.Name(), tpe)
switch ftpe := tpe.(type) {
case *types.Basic:
return swaggerSchemaForType(ftpe.Name(), typable)
case *types.Struct:
sb := schemaBuilder{
decl: p.decl,
ctx: p.ctx,
}
if err := sb.buildFromType(tpe, typable); err != nil {
return err
}
p.postDecls = append(p.postDecls, sb.postDecls...)
return nil
case *types.Pointer:
return p.buildFromField(fld, ftpe.Elem(), typable, seen)
case *types.Interface:
sb := schemaBuilder{
decl: p.decl,
ctx: p.ctx,
}
if err := sb.buildFromType(tpe, typable); err != nil {
return err
}
p.postDecls = append(p.postDecls, sb.postDecls...)
return nil
case *types.Array:
return p.buildFromField(fld, ftpe.Elem(), typable.Items(), seen)
case *types.Slice:
return p.buildFromField(fld, ftpe.Elem(), typable.Items(), seen)
case *types.Map:
schema := new(spec.Schema)
typable.Schema().Typed("object", "").AdditionalProperties = &spec.SchemaOrBool{
Schema: schema,
}
sb := schemaBuilder{
decl: p.decl,
ctx: p.ctx,
}
if err := sb.buildFromType(ftpe.Elem(), schemaTypable{schema, typable.Level() + 1}); err != nil {
return err
}
return nil
case *types.Named:
if decl, found := p.ctx.DeclForType(ftpe.Obj().Type()); found {
if decl.Type.Obj().Pkg().Path() == "time" && decl.Type.Obj().Name() == "Time" {
typable.Typed("string", "date-time")
return nil
}
if sfnm, isf := strfmtName(decl.Comments); isf {
typable.Typed("string", sfnm)
return nil
}
sb := &schemaBuilder{ctx: p.ctx, decl: decl}
sb.inferNames()
if err := sb.buildFromType(decl.Type, typable); err != nil {
return err
}
p.postDecls = append(p.postDecls, sb.postDecls...)
return nil
}
return errors.Errorf("unable to find package and source file for: %s", ftpe.String())
default:
return errors.Errorf("unknown type for %s: %T", fld.String(), fld.Type())
}
}
func (p *parameterBuilder) buildFromStruct(decl *entityDecl, tpe *types.Struct, op *spec.Operation, seen map[string]spec.Parameter) error {
if tpe.NumFields() == 0 {
return nil
}
var sequence []string
for i := 0; i < tpe.NumFields(); i++ {
fld := tpe.Field(i)
if fld.Embedded() {
if err := p.buildFromType(fld.Type(), op, seen); err != nil {
return err
}
continue
}
if !fld.Exported() {
debugLog("skipping field %s because it's not exported", fld.Name())
continue
}
tg := tpe.Tag(i)
var afld *ast.Field
ans, _ := astutil.PathEnclosingInterval(decl.File, fld.Pos(), fld.Pos())
for _, an := range ans {
at, valid := an.(*ast.Field)
if !valid {
continue
}
debugLog("field %s: %s(%T) [%q] ==> %s", fld.Name(), fld.Type().String(), fld.Type(), tg, at.Doc.Text())
afld = at
break
}
if afld == nil {
debugLog("can't find source associated with %s for %s", fld.String(), tpe.String())
continue
}
// if the field is annotated with swagger:ignore, ignore it
if ignored(afld.Doc) {
continue
}
name, ignore, _, err := parseJSONTag(afld)
if err != nil {
return err
}
if ignore {
continue
}
in := "query"
// scan for param location first, this changes some behavior down the line
if afld.Doc != nil {
for _, cmt := range afld.Doc.List {
for _, line := range strings.Split(cmt.Text, "\n") {
matches := rxIn.FindStringSubmatch(line)
if len(matches) > 0 && len(strings.TrimSpace(matches[1])) > 0 {
in = strings.TrimSpace(matches[1])
}
}
}
}
ps := seen[name]
ps.In = in
var pty swaggerTypable = paramTypable{&ps}
if in == "body" {
pty = schemaTypable{pty.Schema(), 0}
}
if in == "formData" && afld.Doc != nil && fileParam(afld.Doc) {
pty.Typed("file", "")
} else if err := p.buildFromField(fld, fld.Type(), pty, seen); err != nil {
return err
}
if strfmtName, ok := strfmtName(afld.Doc); ok {
ps.Typed("string", strfmtName)
ps.Ref = spec.Ref{}
ps.Items = nil
}
sp := new(sectionedParser)
sp.setDescription = func(lines []string) { ps.Description = joinDropLast(lines) }
if ps.Ref.String() == "" {
sp.taggers = []tagParser{
newSingleLineTagParser("in", &matchOnlyParam{&ps, rxIn}),
newSingleLineTagParser("maximum", &setMaximum{paramValidations{&ps}, rxf(rxMaximumFmt, "")}),
newSingleLineTagParser("minimum", &setMinimum{paramValidations{&ps}, rxf(rxMinimumFmt, "")}),
newSingleLineTagParser("multipleOf", &setMultipleOf{paramValidations{&ps}, rxf(rxMultipleOfFmt, "")}),
newSingleLineTagParser("minLength", &setMinLength{paramValidations{&ps}, rxf(rxMinLengthFmt, "")}),
newSingleLineTagParser("maxLength", &setMaxLength{paramValidations{&ps}, rxf(rxMaxLengthFmt, "")}),
newSingleLineTagParser("pattern", &setPattern{paramValidations{&ps}, rxf(rxPatternFmt, "")}),
newSingleLineTagParser("collectionFormat", &setCollectionFormat{paramValidations{&ps}, rxf(rxCollectionFormatFmt, "")}),
newSingleLineTagParser("minItems", &setMinItems{paramValidations{&ps}, rxf(rxMinItemsFmt, "")}),
newSingleLineTagParser("maxItems", &setMaxItems{paramValidations{&ps}, rxf(rxMaxItemsFmt, "")}),
newSingleLineTagParser("unique", &setUnique{paramValidations{&ps}, rxf(rxUniqueFmt, "")}),
newSingleLineTagParser("enum", &setEnum{paramValidations{&ps}, rxf(rxEnumFmt, "")}),
newSingleLineTagParser("default", &setDefault{&ps.SimpleSchema, paramValidations{&ps}, rxf(rxDefaultFmt, "")}),
newSingleLineTagParser("example", &setExample{&ps.SimpleSchema, paramValidations{&ps}, rxf(rxExampleFmt, "")}),
newSingleLineTagParser("required", &setRequiredParam{&ps}),
}
itemsTaggers := func(items *spec.Items, level int) []tagParser {
// the expression is 1-index based not 0-index
itemsPrefix := fmt.Sprintf(rxItemsPrefixFmt, level+1)
return []tagParser{
newSingleLineTagParser(fmt.Sprintf("items%dMaximum", level), &setMaximum{itemsValidations{items}, rxf(rxMaximumFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dMinimum", level), &setMinimum{itemsValidations{items}, rxf(rxMinimumFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dMultipleOf", level), &setMultipleOf{itemsValidations{items}, rxf(rxMultipleOfFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dMinLength", level), &setMinLength{itemsValidations{items}, rxf(rxMinLengthFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dMaxLength", level), &setMaxLength{itemsValidations{items}, rxf(rxMaxLengthFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dPattern", level), &setPattern{itemsValidations{items}, rxf(rxPatternFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dCollectionFormat", level), &setCollectionFormat{itemsValidations{items}, rxf(rxCollectionFormatFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dMinItems", level), &setMinItems{itemsValidations{items}, rxf(rxMinItemsFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dMaxItems", level), &setMaxItems{itemsValidations{items}, rxf(rxMaxItemsFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dUnique", level), &setUnique{itemsValidations{items}, rxf(rxUniqueFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dEnum", level), &setEnum{itemsValidations{items}, rxf(rxEnumFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dDefault", level), &setDefault{&items.SimpleSchema, itemsValidations{items}, rxf(rxDefaultFmt, itemsPrefix)}),
newSingleLineTagParser(fmt.Sprintf("items%dExample", level), &setExample{&items.SimpleSchema, itemsValidations{items}, rxf(rxExampleFmt, itemsPrefix)}),
}
}
var parseArrayTypes func(expr ast.Expr, items *spec.Items, level int) ([]tagParser, error)
parseArrayTypes = func(expr ast.Expr, items *spec.Items, level int) ([]tagParser, error) {
if items == nil {
return []tagParser{}, nil
}
switch iftpe := expr.(type) {
case *ast.ArrayType:
eleTaggers := itemsTaggers(items, level)
sp.taggers = append(eleTaggers, sp.taggers...)
otherTaggers, err := parseArrayTypes(iftpe.Elt, items.Items, level+1)
if err != nil {
return nil, err
}
return otherTaggers, nil
case *ast.SelectorExpr:
otherTaggers, err := parseArrayTypes(iftpe.Sel, items.Items, level+1)
if err != nil {
return nil, err
}
return otherTaggers, nil
case *ast.Ident:
taggers := []tagParser{}
if iftpe.Obj == nil {
taggers = itemsTaggers(items, level)
}
otherTaggers, err := parseArrayTypes(expr, items.Items, level+1)
if err != nil {
return nil, err
}
return append(taggers, otherTaggers...), nil
case *ast.StarExpr:
otherTaggers, err := parseArrayTypes(iftpe.X, items, level)
if err != nil {
return nil, err
}
return otherTaggers, nil
default:
return nil, fmt.Errorf("unknown field type ele for %q", name)
}
}
// check if this is a primitive, if so parse the validations from the
// doc comments of the slice declaration.
if ftped, ok := afld.Type.(*ast.ArrayType); ok {
taggers, err := parseArrayTypes(ftped.Elt, ps.Items, 0)
if err != nil {
return err
}
sp.taggers = append(taggers, sp.taggers...)
}
} else {
sp.taggers = []tagParser{
newSingleLineTagParser("in", &matchOnlyParam{&ps, rxIn}),
newSingleLineTagParser("required", &matchOnlyParam{&ps, rxRequired}),
}
}
if err := sp.Parse(afld.Doc); err != nil {
return err
}
if ps.In == "path" {
ps.Required = true
}
if ps.Name == "" {
ps.Name = name
}
if name != fld.Name() {
addExtension(&ps.VendorExtensible, "x-go-name", fld.Name())
}
seen[name] = ps
sequence = append(sequence, name)
}
for _, k := range sequence {
p := seen[k]
for i, v := range op.Parameters {
if v.Name == k {
op.Parameters = append(op.Parameters[:i], op.Parameters[i+1:]...)
break
}
}
op.Parameters = append(op.Parameters, p)
}
return nil
}