astutils

Documentation

Index

• func ExprString(expr ast.Expr) string
• func FixImport(src []byte, file string)
• func GetImportPath(dir string) string
• func GetMod() string
• func RewriteJSONTag(file string, omitempty bool, convert func(old string) string) (string, error)
• func Visit(files *[]string) filepath.WalkFunc
• type FieldMeta
• type InterfaceCollector
  • func BuildInterfaceCollector(file string, exprString func(ast.Expr) string) InterfaceCollector
  • func NewInterfaceCollector(exprString func(ast.Expr) string) *InterfaceCollector
  • func (ic *InterfaceCollector) Collect(n ast.Node) ast.Visitor
  • func (ic *InterfaceCollector) Visit(n ast.Node) ast.Visitor
• type InterfaceMeta
• type MethodMeta
  • func GetMethodMeta(spec *ast.FuncDecl) MethodMeta
  • func NewMethodMeta(ft *ast.FuncType, exprString func(ast.Expr) string) MethodMeta
  • func (mm MethodMeta) String() string
• type PackageMeta
• type StructCollector
  • func BuildStructCollector(file string, exprString func(ast.Expr) string) StructCollector
  • func NewStructCollector(exprString func(ast.Expr) string) *StructCollector
  • func (sc *StructCollector) Collect(n ast.Node) ast.Visitor
  • func (sc *StructCollector) DocFlatEmbed() []StructMeta
  • func (sc *StructCollector) Visit(n ast.Node) ast.Visitor
• type StructMeta
  • func NewStructMeta(structType *ast.StructType, exprString func(ast.Expr) string) StructMeta

Examples

• RewriteJSONTag

Functions

func ExprString

func ExprString(expr ast.Expr) string

ExprString return string representation from ast.Expr

func FixImport

func FixImport(src []byte, file string)

FixImport format source code and add missing import syntax automatically

func GetImportPath

func GetImportPath(dir string) string

GetImportPath get import path of pkg from dir

func GetMod

func GetMod() string

GetMod get module name from go.mod file

func RewriteJSONTag

func RewriteJSONTag(file string, omitempty bool, convert func(old string) string) (string, error)

RewriteJSONTag overwrites json tag by convert function and return formatted source code

Example

file := pathutils.Abs("testdata/rewritejsontag.go")
result, err := RewriteJSONTag(file, true, strcase.ToLowerCamel)
if err != nil {
	panic(err)
}
fmt.Println(result)

Output:

package main

type base struct {
	Index string `json:"index,omitempty"`
	Type  string `json:"type,omitempty"`
}

type struct1 struct {
	base
	Name       string `json:"name,omitempty"`
	StructType int    `json:"structType,omitempty" dd:"awesomtag"`
	Format     string `dd:"anothertag" json:"format,omitempty"`
	Pos        int    `json:"pos,omitempty"`
}

func Visit

func Visit(files *[]string) filepath.WalkFunc

Visit visit each files

Types

type FieldMeta

type FieldMeta struct {
	Name     string
	Type     string
	Tag      string
	Comments []string
	IsExport bool
	// used in OpenAPI 3.0 spec as property name
	DocName string
}

FieldMeta wraps field info

type InterfaceCollector

type InterfaceCollector struct {
	Interfaces []InterfaceMeta
	Package    PackageMeta
	// contains filtered or unexported fields
}

InterfaceCollector collect interfaces by parsing source code

func BuildInterfaceCollector

func BuildInterfaceCollector(file string, exprString func(ast.Expr) string) InterfaceCollector

BuildInterfaceCollector initializes an InterfaceCollector and collects interfaces

func NewInterfaceCollector

func NewInterfaceCollector(exprString func(ast.Expr) string) *InterfaceCollector

NewInterfaceCollector initializes an InterfaceCollector

func (*InterfaceCollector) Collect

func (ic *InterfaceCollector) Collect(n ast.Node) ast.Visitor

Collect collects all interfaces from source code

func (*InterfaceCollector) Visit

func (ic *InterfaceCollector) Visit(n ast.Node) ast.Visitor

Visit traverse each node from source code

type InterfaceMeta

type InterfaceMeta struct {
	Name     string
	Methods  []MethodMeta
	Comments []string
}

InterfaceMeta wraps interface info

type MethodMeta

type MethodMeta struct {
	// Recv method receiver
	Recv string
	// Name method name
	Name string
	// Params when generate client code from openapi3 spec json file, Params holds all method input parameters.
	// when generate client code from service interface in svc.go file, if there is struct type param, this struct type param will put into request body,
	// then others will be put into url as query string. if there is no struct type param and the api is a get request, all will be put into url as query string.
	// if there is no struct type param and the api is Not a get request, all will be put into request body as application/x-www-form-urlencoded data.
	// specially, if there is one or more *multipart.FileHeader or []*multipart.FileHeader params, all will be put into request body as multipart/form-data data.
	Params []FieldMeta
	// Results response
	Results []FieldMeta
	// PathVars not support when generate client code from service interface in svc.go file
	// when generate client code from openapi3 spec json file, PathVars is parameters in url as path variable.
	PathVars []FieldMeta
	// HeaderVars not support when generate client code from service interface in svc.go file
	// when generate client code from openapi3 spec json file, HeaderVars is parameters in header.
	HeaderVars []FieldMeta
	// BodyParams not support when generate client code from service interface in svc.go file
	// when generate client code from openapi3 spec json file, BodyParams is parameters in request body as query string.
	BodyParams *FieldMeta
	// BodyJSON not support when generate client code from service interface in svc.go file
	// when generate client code from openapi3 spec json file, BodyJSON is parameters in request body as json.
	BodyJSON *FieldMeta
	// Files not support when generate client code from service interface in svc.go file
	// when generate client code from openapi3 spec json file, Files is parameters in request body as multipart file.
	Files []FieldMeta
	// Comments of the method
	Comments []string
	// Path api path
	// not support when generate client code from service interface in svc.go file
	Path string
	// QueryParams not support when generate client code from service interface in svc.go file
	// when generate client code from openapi3 spec json file, QueryParams is parameters in url as query string.
	QueryParams *FieldMeta
}

MethodMeta represents an api

func GetMethodMeta

func GetMethodMeta(spec *ast.FuncDecl) MethodMeta

GetMethodMeta get method name then new MethodMeta struct from *ast.FuncDecl

func NewMethodMeta

func NewMethodMeta(ft *ast.FuncType, exprString func(ast.Expr) string) MethodMeta

NewMethodMeta new MethodMeta struct from *ast.FuncDecl

func (MethodMeta) String

func (mm MethodMeta) String() string

type PackageMeta

type PackageMeta struct {
	Name string
}

PackageMeta wraps package info

type StructCollector

type StructCollector struct {
	Structs          []StructMeta
	Methods          map[string][]MethodMeta
	Package          PackageMeta
	NonStructTypeMap map[string]ast.Expr
	// contains filtered or unexported fields
}

StructCollector collect structs by parsing source code

func BuildStructCollector

func BuildStructCollector(file string, exprString func(ast.Expr) string) StructCollector

BuildStructCollector initializes an StructCollector and collects structs

func NewStructCollector

func NewStructCollector(exprString func(ast.Expr) string) *StructCollector

NewStructCollector initializes an StructCollector

func (*StructCollector) Collect

func (sc *StructCollector) Collect(n ast.Node) ast.Visitor

Collect collects all structs from source code

func (*StructCollector) DocFlatEmbed

func (sc *StructCollector) DocFlatEmbed() []StructMeta

DocFlatEmbed flatten embed struct fields

func (*StructCollector) Visit

func (sc *StructCollector) Visit(n ast.Node) ast.Visitor

Visit traverse each node from source code

type StructMeta

type StructMeta struct {
	Name     string
	Fields   []FieldMeta
	Comments []string
	Methods  []MethodMeta
	IsExport bool
}

StructMeta wraps struct info

func NewStructMeta

func NewStructMeta(structType *ast.StructType, exprString func(ast.Expr) string) StructMeta

NewStructMeta new StructMeta from *ast.StructType