func Rename(filename string, line int, column int, newName string) (ok bool, err *errors.GoRefactorError) {
if ok, err = CheckRenameParameters(filename, line, column, newName); !ok {
return
}
programTree := parseProgram(filename)
var sym st.Symbol
if sym, err = programTree.FindSymbolByPosition(filename, line, column); err == nil {
if _, ok := sym.(*st.PointerTypeSymbol); ok {
panic("find by position returned pointer type!!!")
}
if st.IsPredeclaredIdentifier(sym.Name()) {
return false, errors.UnrenamableIdentifierError(sym.Name(), " It's a basic language symbol")
}
if sym.PackageFrom().IsGoPackage {
return false, errors.UnrenamableIdentifierError(sym.Name(), " It's a symbol,imported from go library")
}
if unicode.IsUpper(int(sym.Name()[0])) && !unicode.IsUpper(int(newName[0])) ||
unicode.IsLower(int(sym.Name()[0])) && !unicode.IsLower(int(newName[0])) {
return false, &errors.GoRefactorError{ErrorType: "Can't rename identifier", Message: "can't change access modifier. Changing first letter's case can cause errors."}
}
if _, ok := sym.Scope().LookUp(newName, filename); ok {
return false, errors.IdentifierAlreadyExistsError(newName)
}
if meth, ok := sym.(*st.FunctionSymbol); ok {
if meth.IsInterfaceMethod {
return false, errors.UnrenamableIdentifierError(sym.Name(), " It's an interface method")
}
}
if ps, ok := sym.(*st.PackageSymbol); ok {
pack, file := programTree.FindPackageAndFileByFilename(filename)
impDecl := findImportDecl(pack, file, ps)
if impDecl == nil {
panic("couldn't find import decl")
}
if impDecl.Name == nil || impDecl.Name.Name == "" {
impDecl.Name = ast.NewIdent(newName)
}
}
fnames, fsets, files, err := renameSymbol(sym, newName, programTree)
if err == nil {
for i, f := range fnames {
programTree.SaveFileExplicit(f, fsets[i], files[i])
}
}
return err == nil, err
} else {
return false, err
}
panic("unreachable code")
}
//Fixes Type and its' subtypes recursively
func (pp *packageParser) fixType(sym st.Symbol) {
if sym == nil {
panic("error: fixing nil symbol")
}
if st.IsPredeclaredIdentifier(sym.Name()) {
return
}
if sym.PackageFrom() != pp.Package {
return
}
// fmt.Printf("%s fixing %v %T %p\n", pp.Package.AstPackage.Name, sym.Name(), sym, sym)
if pp.checkIsVisited(sym) {
return
}
//fmt.Printf("%s fixing %v %T %p\n", pp.Package.AstPackage.Name, sym.Name(), sym,sym)
switch t := sym.(type) {
case *st.AliasTypeSymbol:
pp.fixAliasTypeSymbol(t)
case *st.PointerTypeSymbol:
pp.fixPointerTypeSymbol(t)
case *st.ArrayTypeSymbol:
pp.fixArrayTypeSymbol(t)
case *st.StructTypeSymbol:
pp.fixStructTypeSymbol(t)
case *st.InterfaceTypeSymbol:
pp.fixInterfaceTypeSymbol(t)
case *st.MapTypeSymbol:
pp.fixMapTypeSymbol(t)
case *st.ChanTypeSymbol:
pp.fixChanTypeSymbol(t)
case *st.FunctionTypeSymbol:
pp.fixFunctionTypeSymbol(t)
case *st.VariableSymbol:
pp.fixVariableSymbol(t)
case *st.FunctionSymbol:
pp.fixFunctionSymbol(t)
}
}
func (pp *packageParser) openMethodsAndFields(sym st.Symbol) {
if pp.checkIsVisited(sym) {
return
}
// fmt.Printf("opening %s %T from %s\n", sym.Name(), sym, func(p *st.Package) string {
// if p == nil {
// return "nil"
// }
// return p.AstPackage.Name
// }(sym.PackageFrom()))
if st.IsPredeclaredIdentifier(sym.Name()) {
return
}
switch t := sym.(type) {
case *st.ArrayTypeSymbol:
pp.openMethodsAndFields(t.ElemType)
case *st.ChanTypeSymbol:
pp.openMethodsAndFields(t.ValueType)
case *st.FunctionTypeSymbol:
if t.Parameters != nil {
t.Parameters.ForEachNoLock(func(sym st.Symbol) {
v := sym.(*st.VariableSymbol)
pp.openMethodsAndFields(v.VariableType)
})
}
if t.Results != nil {
t.Results.ForEachNoLock(func(sym st.Symbol) {
v := sym.(*st.VariableSymbol)
pp.openMethodsAndFields(v.VariableType)
})
}
case *st.InterfaceTypeSymbol:
if t.Meths != nil {
t.Meths.ForEachNoLock(func(sym st.Symbol) {
if _, ok := sym.(*st.FunctionSymbol); !ok {
//EmbeddedInterface
pp.openMethodsAndFields(sym)
ts := sym.(*st.InterfaceTypeSymbol)
t.Meths.AddOpenedScope(ts.Meths)
//Delete functionSymbol which is now useles from interface
t.Meths.RemoveSymbol(sym.Name())
}
})
}
case *st.MapTypeSymbol:
pp.openMethodsAndFields(t.KeyType)
pp.openMethodsAndFields(t.ValueType)
case *st.StructTypeSymbol:
// if t.Name() == "Package" {
// fmt.Printf("YEAHHH YEAHHH %p\n", t)
// }
t.Fields.ForEachNoLock(func(variable st.Symbol) {
if _, ok := variable.(*st.VariableSymbol); !ok {
ts := variable.(st.ITypeSymbol)
pp.openMethodsAndFields(ts)
//Methods
if ts.Methods() != nil {
t.Methods().AddOpenedScope(ts.Methods())
}
//Fields
switch ttt := ts.(type) {
case *st.StructTypeSymbol:
t.Fields.AddOpenedScope(ttt.Fields)
case *st.PointerTypeSymbol:
t.Fields.AddOpenedScope(ttt.Fields)
}
//No longer need in type thumb, replace with var
typeVar := st.MakeVariable(ts.Name(), t.Fields, ts)
typeVar.Idents = ts.Identifiers()
typeVar.Posits = ts.Positions()
t.Fields.ReplaceSymbol(ts.Name(), typeVar) //replaces old one
}
})
case *st.PointerTypeSymbol:
//fmt.Printf("%v %T \n", t.BaseType.Name(), t.BaseType)
pp.openMethodsAndFields(t.BaseType)
switch str := t.BaseType.(type) {
case *st.StructTypeSymbol:
t.Fields = str.Fields
case *st.PointerTypeSymbol:
t.Fields = str.Fields
}
if _, cyc := st.GetBaseType(t); cyc {
// fmt.Printf("%s from %s\n", t.Name(), t.PackageFrom().AstPackage.Name)
panic("cycle, don't work with that")
}
if t.BaseType.Methods() != nil {
t.Methods().AddOpenedScope(t.BaseType.Methods())
}
// if t.BaseType.Name() == "Package" {
// fmt.Printf("YEAHHH YEAHHH %p %p\n", t, t.BaseType)
// fmt.Println(*t.Methods().String());
// }
pp.openMethodsAndFields(t.BaseType)
}
}