346 lines
8.5 KiB
Go
346 lines
8.5 KiB
Go
package lib
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import (
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"fmt"
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"github.com/fatih/structtag"
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"go/ast"
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"go/parser"
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"go/token"
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"log"
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"net/http"
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"sort"
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"strings"
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)
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var api API
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func llog(s string, p ...interface{}) {
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fmt.Printf(s+"\n", p...)
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}
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func addStruct(a *ast.GenDecl) {
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md := manageComments(a.Doc)
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if md["API"] == "" {
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return
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}
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tp := APIType{
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Name: "",
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Desc: "",
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Fields: make(map[string]*APIField),
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Col: md["COL"],
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}
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tp.Name = a.Specs[0].(*ast.TypeSpec).Name.Name
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llog("Adding type: %s => %#v", tp.Name, md)
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for _, v := range a.Specs[0].(*ast.TypeSpec).Type.(*ast.StructType).Fields.List {
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tp.Fields[v.Names[0].Name] = &APIField{}
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tp.Fields[v.Names[0].Name].Tags = make(map[string]APIFieldTag)
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switch x := v.Type.(type) {
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case *ast.Ident:
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tp.Fields[v.Names[0].Name].Type = x.Name
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case *ast.ArrayType:
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switch z := x.Elt.(type) {
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case *ast.Ident:
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tp.Fields[v.Names[0].Name].Type = z.Name
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tp.Fields[v.Names[0].Name].Array = true
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case *ast.InterfaceType:
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tp.Fields[v.Names[0].Name].Type = "interface{}"
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tp.Fields[v.Names[0].Name].Array = true
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case *ast.SelectorExpr:
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api.UsedImportsTypes[z.X.(*ast.Ident).Name] = api.Imports[z.X.(*ast.Ident).Name]
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tp.Fields[v.Names[0].Name].Type = z.X.(*ast.Ident).Name + "." + z.Sel.Name
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tp.Fields[v.Names[0].Name].Array = true
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}
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case *ast.StarExpr:
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switch y := x.X.(type) {
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case *ast.Ident:
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tp.Fields[v.Names[0].Name].Type = y.Name
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case *ast.SelectorExpr:
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switch z := y.X.(type) {
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case *ast.Ident:
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api.UsedImportsTypes[z.Name] = api.Imports[z.Name]
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tp.Fields[v.Names[0].Name].Type = z.Name + "." + y.Sel.Name
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}
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}
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case *ast.InterfaceType:
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tp.Fields[v.Names[0].Name].Type = "interface{}"
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case *ast.SelectorExpr:
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switch z := x.X.(type) {
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case *ast.Ident:
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api.UsedImportsTypes[z.Name] = api.Imports[z.Name]
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tp.Fields[v.Names[0].Name].Type = z.Name + "." + x.Sel.Name
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}
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case *ast.MapType:
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switch z := x.Value.(type) {
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case *ast.Ident:
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tp.Fields[v.Names[0].Name].Type = ""
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tp.Fields[v.Names[0].Name].Mapkey = x.Key.(*ast.Ident).Name
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tp.Fields[v.Names[0].Name].Mapval = z.Name
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tp.Fields[v.Names[0].Name].Map = true
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case *ast.InterfaceType:
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tp.Fields[v.Names[0].Name].Type = "interface{}"
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tp.Fields[v.Names[0].Name].Array = true
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}
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default:
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log.Printf("%#v", x)
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}
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if v.Tag != nil {
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tgstr := strings.ReplaceAll(v.Tag.Value, "`", "")
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tg, err := structtag.Parse(tgstr)
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if err != nil {
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panic(err)
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}
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for _, tgv := range tg.Keys() {
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atg, err := tg.Get(tgv)
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if err != nil {
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panic(err)
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}
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tp.Fields[v.Names[0].Name].Tags[tgv] = APIFieldTag{
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Key: tgv,
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Name: atg.Name,
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Opts: atg.Options,
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}
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}
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log.Printf("#%v", tg)
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}
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}
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api.Types[tp.Name] = &tp
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}
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func addFunction(a *ast.FuncDecl) {
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md := manageComments(a.Doc)
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if md["API"] == "" {
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return
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}
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llog("Adding Fuction: %s => %#v", a.Name, md)
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reqType := &APIParamType{}
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resType := &APIParamType{}
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if len(a.Type.Params.List) > 1 {
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switch x := a.Type.Params.List[1].Type.(type) {
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case *ast.StarExpr:
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reqType.Ispointer = true
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switch y := x.X.(type) {
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case *ast.Ident:
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reqType.Typename = y.Name
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case *ast.SelectorExpr:
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api.UsedImportsFunctions[y.X.(*ast.Ident).Name] = api.Imports[y.X.(*ast.Ident).Name]
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reqType.Typename = y.X.(*ast.Ident).Name + "." + y.Sel.Name
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}
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case *ast.ArrayType:
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reqType.IsArray = true
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switch y := x.Elt.(type) {
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case *ast.Ident:
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reqType.Typename = y.Name
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case *ast.SelectorExpr:
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api.UsedImportsFunctions[y.X.(*ast.Ident).Name] = api.Imports[y.X.(*ast.Ident).Name]
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reqType.Typename = y.X.(*ast.Ident).Name + "." + y.Sel.Name
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case *ast.StarExpr:
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reqType.Ispointer = true
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switch z := y.X.(type) {
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case *ast.Ident:
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reqType.Typename = z.Name
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case *ast.SelectorExpr:
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api.UsedImportsFunctions[z.X.(*ast.Ident).Name] = api.Imports[z.X.(*ast.Ident).Name]
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reqType.Typename = z.X.(*ast.Ident).Name + "." + z.Sel.Name
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}
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}
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case *ast.Ident:
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reqType.Typename = x.Name
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case *ast.SelectorExpr:
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api.UsedImportsFunctions[x.X.(*ast.Ident).Name] = api.Imports[x.X.(*ast.Ident).Name]
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reqType.Typename = x.X.(*ast.Ident).Name + "." + x.Sel.Name
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}
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}
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if a.Type.Results != nil && len(a.Type.Results.List) > 0 {
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switch x := a.Type.Results.List[0].Type.(type) {
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case *ast.StarExpr:
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resType.Ispointer = true
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switch y := x.X.(type) {
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case *ast.Ident:
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resType.Typename = y.Name
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case *ast.SelectorExpr:
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api.UsedImportsFunctions[y.X.(*ast.Ident).Name] = api.Imports[y.X.(*ast.Ident).Name]
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resType.Typename = y.X.(*ast.Ident).Name + "." + y.Sel.Name
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}
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case *ast.ArrayType:
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resType.IsArray = true
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switch y := x.Elt.(type) {
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case *ast.Ident:
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resType.Typename = y.Name
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case *ast.SelectorExpr:
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api.UsedImportsFunctions[y.X.(*ast.Ident).Name] = api.Imports[y.X.(*ast.Ident).Name]
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resType.Typename = y.X.(*ast.Ident).Name + "." + y.Sel.Name
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case *ast.StarExpr:
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resType.Ispointer = true
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switch z := y.X.(type) {
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case *ast.Ident:
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resType.Typename = z.Name
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case *ast.SelectorExpr:
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api.UsedImportsFunctions[z.X.(*ast.Ident).Name] = api.Imports[z.X.(*ast.Ident).Name]
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resType.Typename = z.X.(*ast.Ident).Name + "." + z.Sel.Name
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}
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}
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case *ast.Ident:
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resType.Typename = x.Name
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case *ast.SelectorExpr:
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api.UsedImportsFunctions[x.X.(*ast.Ident).Name] = api.Imports[x.X.(*ast.Ident).Name]
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resType.Typename = x.X.(*ast.Ident).Name + "." + x.Sel.Name
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}
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if md["RAW"] == "true" {
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reqType.Typename = md["REQ"]
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resType.Typename = md["RES"]
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}
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verb := md["VERB"]
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if verb == "" {
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verb = http.MethodPost
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}
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fn := APIMethod{
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Name: a.Name.Name,
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Desc: a.Name.Name,
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Verb: verb,
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Path: md["PATH"],
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Perm: md["PERM"],
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ReqType: reqType,
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ResType: resType,
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}
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if fn.Path == "" {
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fn.Path = "/" + strings.Replace(strings.ToLower(a.Name.Name), "_", "/", -1)
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}
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api.Methods[a.Name.Name] = &fn
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}
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}
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func load(src string) error {
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api.Types = (make(map[string]*APIType))
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api.Methods = (make(map[string]*APIMethod))
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api.Imports = make(map[string]string)
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api.UsedImportsTypes = make(map[string]string)
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api.UsedImportsFunctions = make(map[string]string)
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api.Paths = make(map[string]*APIPath)
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api.SortedPaths = make([]*APIPath, 0)
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fset := token.NewFileSet() // positions are relative to fset
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f, err := parser.ParseDir(fset, src, nil, parser.ParseComments)
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if err != nil {
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return err
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}
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for _, v := range f {
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llog("Loading Package: %s", v.Name)
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// Print the AST.
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ast.Inspect(v, func(n ast.Node) bool {
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switch x := n.(type) {
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case *ast.GenDecl:
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if x.Tok == token.TYPE {
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addStruct(x)
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} else {
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return true
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}
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case *ast.ImportSpec:
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var impkey = ""
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var impval = ""
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impval = strings.Replace(x.Path.Value, "\"", "", -1)
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impval = strings.Replace(impval, "'", "", -1)
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if x.Name != nil && x.Name.Name != "" {
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impkey = x.Name.Name
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} else {
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parts := strings.Split(impval, "/")
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impkey = parts[len(parts)-1]
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}
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api.Imports[impkey] = impval
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case *ast.File:
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manageCommentsGroups(x.Comments)
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case *ast.FuncDecl:
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addFunction(x)
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llog("Adding fn: %s", x.Name)
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case *ast.ValueSpec:
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if x.Names[0].Name == "BASEPATH" {
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api.BasePath = strings.Replace(x.Values[0].(*ast.BasicLit).Value, "\"", "", -1)
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}
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if x.Names[0].Name == "NAMESPACE" {
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api.Namespace = strings.Replace(x.Values[0].(*ast.BasicLit).Value, "\"", "", -1)
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}
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log.Printf("%#v", x)
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case *ast.Package:
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packageName = x.Name
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default:
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//log.Printf("%#v", x)
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return true
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}
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return true
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})
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}
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for k, v := range api.Methods {
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path, ok := api.Paths[v.Path]
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if !ok {
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path = &APIPath{
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Path: v.Path,
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MapVerbs: make(map[string]*APIVerb),
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SortedVerbs: make([]*APIVerb, 0),
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}
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api.Paths[v.Path] = path
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}
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path.MapVerbs[v.Verb] = &APIVerb{
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Verb: v.Verb,
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Method: v,
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}
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pathmap, ok := httpMapper[v.Path]
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if !ok {
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httpMapper[v.Path] = make(map[string]string)
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pathmap = httpMapper[v.Path]
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}
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pathmap[v.Verb] = k
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}
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pathNames := make([]string, 0)
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for k, v := range api.Paths {
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verbs := make([]string, 0)
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for k, _ := range v.MapVerbs {
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verbs = append(verbs, k)
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}
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sort.Strings(verbs)
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for _, sv := range verbs {
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v.SortedVerbs = append(v.SortedVerbs, v.MapVerbs[sv])
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}
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pathNames = append(pathNames, k)
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}
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sort.Strings(pathNames)
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for _, p := range pathNames {
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api.SortedPaths = append(api.SortedPaths, api.Paths[p])
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}
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api.Namespace = packageName
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return nil
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}
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