128 строки
2,1 КиБ
Go
128 строки
2,1 КиБ
Go
package service
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import (
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"go/ast"
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"strings"
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)
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func handleFuncDecl(decl ast.Decl) string {
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fd := decl.(*ast.FuncDecl)
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if fd.Recv != nil {
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return handleMethodDeclaration(fd)
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}
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return handleFunctionDeclaration(fd)
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}
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func handleFunctionDeclaration(fd *ast.FuncDecl) string {
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if shouldSkipFunction(fd.Type) {
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return ""
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}
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code := ""
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name := ""
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ft := handleFuncDeclType(fd.Type)
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code += ft
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code += " "
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name = handleFuncDeclName(fd.Name)
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if name == "NewController" {
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return ""
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}
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code += name
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code += "("
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fp := handleFuncDeclParams(fd.Type)
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code += fp
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addFunctionDeclaration(ft + " " + name + "(" + fp + ");")
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code += ") {"
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code += handleBlockStmt(fd.Body)
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code += "}"
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return code
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}
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func shouldSkipFunction(t *ast.FuncType) (res bool) {
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r := t.Results
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if r == nil {
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return
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}
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l := r.List
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if len(l) != 1 {
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return
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}
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p := l[0]
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if p == nil {
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return
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}
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pt := p.Type
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if pt == nil {
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return
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}
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i, ok := pt.(*ast.Ident)
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if !ok {
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return
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}
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if i.Name == "ShouldBeSkipped" {
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return true
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}
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return
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}
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func handleFuncDeclType(t *ast.FuncType) string {
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code := ""
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if t.Results == nil {
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return "void"
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}
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fl := t.Results
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if fl.NumFields() == 0 {
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panic("handleFuncDeclType: fl.NumFields() == 0")
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}
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switch ft := fl.List[0].Type.(type) {
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case *ast.Ident:
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code += handleIdentExpr(ft)
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}
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return code
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}
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func handleFuncDeclName(ident *ast.Ident) string {
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code := ""
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if ident == nil {
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return code
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}
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code += ident.Name
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if val, ok := mapping[code]; ok {
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code = val
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}
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return code
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}
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func handleFuncDeclParams(t *ast.FuncType) string {
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code := ""
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if t.Params == nil || t.Params.List == nil {
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return code
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}
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values := make([]string, 0)
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for _, field := range t.Params.List {
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ftype := ""
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switch ft := field.Type.(type) {
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case *ast.Ident:
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ftype = handleIdentExpr(ft)
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}
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for _, names := range field.Names {
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values = append(values, ftype+" "+names.Name)
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}
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}
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code += strings.Join(values, ",")
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return code
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}
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func addFunctionDeclaration(f string) {
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dlock.Lock()
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defer dlock.Unlock()
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funcDeclarations = append(funcDeclarations, f)
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}
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