func inlineMethod(programTree *program.Program, filename string, lineStart int, colStart int, lineEnd int, colEnd int) (bool, *errors.GoRefactorError) {
if ok, err := CheckInlineMethodParameters(filename, lineStart, colStart, lineEnd, colEnd); !ok {
return false, err
}
pack, file := programTree.FindPackageAndFileByFilename(filename)
if pack == nil {
return false, errors.ArgumentError("filename", "Program packages don't contain file '"+filename+"'")
}
fset := pack.FileSet
callNode, nodeFrom := getCall(fset, file, filename, lineStart, colStart, lineEnd, colEnd)
if callNode == nil {
return false, &errors.GoRefactorError{ErrorType: "inline method error", Message: "couldn't find call expression"}
}
_, CallAsExpression := callNode.(*ast.CallExpr)
callExpr, err := getCallExpr(callNode)
if err != nil {
return false, err
}
funSym, err := getMethodSymbol(programTree, callExpr)
if err != nil {
return false, err
}
if funSym.PackageFrom() != pack {
return false, &errors.GoRefactorError{ErrorType: "inline method error", Message: "can't inline method from other package"}
}
decl, sourceFile, err := getDeclarationInFile(programTree, pack, funSym)
if err != nil {
return false, err
}
if len(decl.Body.List) == 0 {
ok, err := printerUtil.DeleteNode(fset, filename, file, fset.Position(callExpr.Pos()), fset.Position(callExpr.End()))
if !ok {
return false, err
}
programTree.SaveFileExplicit(filename, fset, file)
return true, nil
}
destScope := getDestScope(programTree, pack, nodeFrom)
newNames := getNewNames(callExpr, funSym, destScope)
for sym, expr := range newNames {
fmt.Printf("%s -> ", sym.Name())
printer.Fprint(os.Stdout, token.NewFileSet(), expr)
print("; ")
}
tokFile := printerUtil.GetFileFromFileSet(fset, filename)
sourceTokFile := printerUtil.GetFileFromFileSet(fset, sourceFile)
lines := printerUtil.GetLines(tokFile)
for i, offset := range lines {
fmt.Printf("%d -> %s(%d)\n", i+1, fset.Position(tokFile.Pos(offset)), offset)
}
oldListLines, fline := getRangeLinesAtLeastOne(sourceTokFile, decl.Body.List[0].Pos(), decl.Body.List[len(decl.Body.List)-1].End(), sourceTokFile.Size())
fmt.Printf("fline = %d\n", fline)
fmt.Printf("CONVERTER before: %v\n", oldListLines)
fmt.Printf("CONVERTER pos,end: %d,%d\n", decl.Body.List[0].Pos(), decl.Body.List[len(decl.Body.List)-1].End())
resList, newListLines, importsToAdd := getResultStmtList(programTree.IdentMap, pack, funSym, newNames, sourceFile, filename, decl.Body.List, pack.FileSet, callExpr.Pos())
sourceLines := printerUtil.GetLines(sourceTokFile)
zeroSourceLine := newListLines[0] - sourceLines[fline-2]
fmt.Printf("zeroSourceLine = %d\n", zeroSourceLine)
fmt.Printf("CONVERTER after: %v\n", newListLines)
fmt.Printf("CONVERTER pos,end: %d,%d\n", resList[0].Pos(), resList[len(resList)-1].End())
callExprLen := int(callExpr.End() - callExpr.Pos())
listLen := newListLines[len(newListLines)-1] - sourceLines[fline-2]
importsLen := 0
for ps, _ := range importsToAdd {
fmt.Printf("import \"%s\"\n", ps.ShortPath)
importsLen += len("import \"\"\n") + len(ps.ShortPath)
}
mod := listLen + importsLen - callExprLen
fmt.Printf("mod = %d\n", mod)
if mod > 0 {
println("REPARSING *****************************************")
oldSourceTokFileSize := sourceTokFile.Size()
fset, file = printerUtil.ReparseFile(file, filename, mod, programTree.IdentMap)
tokFile = printerUtil.GetFileFromFileSet(fset, filename)
sourceTokFile = printerUtil.GetFileFromFileSet(pack.FileSet, sourceFile)
lines = printerUtil.GetLines(tokFile)
tokFile.SetLines(lines[:len(lines)-(mod)])
callNode, nodeFrom = getCall(fset, file, filename, lineStart, colStart, lineEnd, colEnd)
callExpr, _ = getCallExpr(callNode)
funSym, _ = getMethodSymbol(programTree, callExpr)
decl, sourceFile, _ = getDeclarationInFile(programTree, pack, funSym)
destScope = getDestScope(programTree, pack, nodeFrom)
newNames = getNewNames(callExpr, funSym, destScope)
lines = printerUtil.GetLines(tokFile)
for i, offset := range lines {
fmt.Printf("%d -> %s(%d)\n", i+1, fset.Position(tokFile.Pos(offset)), offset)
}
oldListLines, fline = getRangeLinesAtLeastOne(sourceTokFile, decl.Body.List[0].Pos(), decl.Body.List[len(decl.Body.List)-1].End(), oldSourceTokFileSize)
fmt.Printf("fline = %d\n", fline)
fmt.Printf("CONVERTER before: %v\n", oldListLines)
fmt.Printf("CONVERTER pos,end: %d,%d\n", decl.Body.List[0].Pos(), decl.Body.List[len(decl.Body.List)-1].End())
resList, newListLines, importsToAdd = getResultStmtList(programTree.IdentMap, pack, funSym, newNames, sourceFile, filename, decl.Body.List, pack.FileSet, callExpr.Pos())
sourceLines := printerUtil.GetLines(sourceTokFile)
zeroSourceLine = newListLines[0] - sourceLines[fline-2]
fmt.Printf("lines[fline - 1] = %d, zeroSourceLine = %d\n", sourceLines[fline-2], zeroSourceLine)
fmt.Printf("CONVERTER after: %v\n", newListLines)
fmt.Printf("CONVERTER pos,end: %d,%d\n", resList[0].Pos(), resList[len(resList)-1].End())
}
impPos := file.Decls[0].Pos()
nextLineInd := 0
for i, offs := range lines {
if offs > tokFile.Offset(impPos) {
nextLineInd = i
break
}
}
for ps, _ := range importsToAdd {
printDecls(tokFile, file)
file.Decls = append([]ast.Decl{makeImportDecl(impPos, ps.ShortPath)}, file.Decls...)
mod := len("import \"\"\n") + len(ps.ShortPath)
//positions
printerUtil.FixPositionsExcept(impPos-token.Pos(1), mod, file, true, map[ast.Node]bool{file.Decls[0]: true})
//lines
lines = printerUtil.GetLines(tokFile)
fmt.Printf("before import %s (%d): %v\n", ps.ShortPath, impPos, lines)
newLines := make([]int, 0, len(lines)+1)
newLines = append(newLines, lines[:nextLineInd]...)
newLines = append(newLines, tokFile.Offset(impPos))
newLines = append(newLines, lines[nextLineInd:]...)
for i := nextLineInd; i < len(newLines); i++ {
newLines[i] += mod
}
fmt.Printf("after import %s (nextLine = %d): %v\n", ps.ShortPath, nextLineInd, newLines)
if !tokFile.SetLines(newLines) {
panic("couldn't set lines for file " + tokFile.Name())
}
printDecls(tokFile, file)
}
resMod := int(callExpr.Pos() - resList[0].Pos())
for _, stmt := range resList {
printerUtil.FixPositions(0, resMod, stmt, true)
}
lines = printerUtil.GetLines(tokFile)
resLinesMod := lines[tokFile.Line(callExpr.Pos())-1] - newListLines[0] + zeroSourceLine
fmt.Printf("resLinesMod: %d\n", resLinesMod)
for i, _ := range newListLines {
newListLines[i] += resLinesMod
}
fmt.Printf("call pos: %d,%d; list pos: %d,%d\n", callExpr.Pos(), callExpr.End(), resList[0].Pos(), resList[len(resList)-1].End())
fmt.Printf("newLines %v\n", newListLines)
lines = printerUtil.GetLines(tokFile)
for i, offset := range lines {
fmt.Printf("%d -> %s(%d)\n", i+1, fset.Position(tokFile.Pos(offset)), offset)
}
if CallAsExpression {
rs, ok := resList[0].(*ast.ReturnStmt)
if !ok {
return false, &errors.GoRefactorError{ErrorType: "inline method error", Message: "method, inlined as expression, must have only one statement - return statement"}
}
switch len(rs.Results) {
case 0:
panic("methods, inlined as expression, doesn't return anything")
default:
elist := rs.Results
for _, e := range elist {
printerUtil.FixPositions(0, -len("return "), e, true)
}
mod := int(elist[len(elist)-1].End()-elist[0].Pos()) - callExprLen
lines = printerUtil.GetLines(tokFile)
fmt.Printf("before last (mod = %d) : %v\n", mod, lines)
for i, offset := range lines {
if offset > tokFile.Offset(callExpr.Pos()) {
for j := i; j < len(lines); j++ {
lines[j] += mod
}
break
}
}
fmt.Printf("after last (mod = %d) : %v\n", mod, lines)
fmt.Printf("posits: %s,%s\n", fset.Position(callExpr.Pos()), fset.Position(callExpr.End()))
if !tokFile.SetLines(lines) {
panic("couldn't set lines for file " + tokFile.Name())
}
printerUtil.FixPositionsExcept(callExpr.Pos(), mod, file, true, map[ast.Node]bool{callExpr: true})
errs := replaceExprList(fset.Position(callExpr.Pos()), fset.Position(callExpr.End()), elist, fset, file)
if err, ok := errs[INLINE_METHOD]; ok {
return false, err
}
programTree.SaveFileExplicit(filename, fset, file)
}
} else {
list := getStmtList(nodeFrom)
i, ok := getIndexOfStmt(callNode.(ast.Stmt), list)
if !ok {
panic("couldn't find call statement during inline")
}
callExprLine := tokFile.Line(callExpr.Pos()) - 1
mod := int(resList[len(resList)-1].End()-resList[0].Pos()) - callExprLen
printerUtil.FixPositions(callExpr.Pos(), mod, file, true)
lines = printerUtil.GetLines(tokFile)
fmt.Printf("before last (mod = %d) : %v\n", mod, lines)
newLines := make([]int, 0, len(lines)+len(newListLines)-1)
newLines = append(newLines, lines[:callExprLine+1]...)
newLines = append(newLines, newListLines...)
newLines = append(newLines, lines[callExprLine+2:]...)
fmt.Printf("after last (lines[callExprLine] = %d): %v\n", lines[callExprLine], newLines)
for i := callExprLine + 1 + len(newListLines); i < len(newLines); i++ {
newLines[i] += mod
}
fmt.Printf("after last: %v\n", newLines)
if !tokFile.SetLines(newLines) {
panic("couldn't set lines for file " + tokFile.Name())
}
if len(resList) == 1 {
list[i] = resList[0]
programTree.SaveFileExplicit(filename, fset, file)
return true, nil
}
fmt.Printf("len = %d\n", len(list)-1+len(resList))
fmt.Printf("%v\n", list)
newList := make([]ast.Stmt, len(list)-1+len(resList))
for j := 0; j < i; j++ {
newList[j] = list[j]
}
fmt.Printf("%v\n", newList)
for j := 0; j < len(resList); j++ {
newList[j+i] = resList[j]
}
fmt.Printf("%v\n", newList)
for j := i + 1; j < len(list); j++ {
newList[j+len(resList)-1] = list[j]
}
fmt.Printf("%v\n", newList)
setStmtList(nodeFrom, newList)
programTree.SaveFileExplicit(filename, fset, file)
}
return true, nil
}
func extractInterface(programTree *program.Program, filename string, line int, column int, interfaceName string) (bool, *errors.GoRefactorError) {
if ok, err := CheckExtractInterfaceParameters(filename, line, column, interfaceName); !ok {
return false, err
}
pack, file := programTree.FindPackageAndFileByFilename(filename)
if pack == nil {
return false, errors.ArgumentError("filename", "Program packages don't contain file '"+filename+"'")
}
fset := pack.FileSet
mod := 20000
fset, file = printerUtil.ReparseFile(file, filename, mod, programTree.IdentMap)
tokFile := printerUtil.GetFileFromFileSet(fset, filename)
lines := printerUtil.GetLines(tokFile)
tokFile.SetLines(lines[:len(lines)-(mod)])
if _, ok := pack.Symbols.LookUp(interfaceName, filename); ok {
return false, errors.IdentifierAlreadyExistsError(interfaceName)
}
field, nameNum, fdecl, ok := getSelectedArgument(file, token.Position{filename, 0, line, column}, fset)
if !ok {
return false, &errors.GoRefactorError{ErrorType: "extract interface error", Message: "couldn't find function argument to extract interface"}
}
if field.Names == nil {
return false, &errors.GoRefactorError{ErrorType: "extract interface error", Message: "argument has no name, so empty interface"}
}
varS, ok := programTree.IdentMap.GetSymbol(field.Names[nameNum]).(*st.VariableSymbol)
if !ok {
panic("symbol supposed to be a variable, but it's not")
}
meths, errs := getUsedMethods(programTree, fset, fdecl, varS)
if len(errs) > 0 {
println("some errors don't allow to extract interface:")
for e, _ := range errs {
println(e.String())
}
return false, &errors.GoRefactorError{ErrorType: "extract interface error", Message: "some errors occured, stopped extracting"}
}
methList, i := make([]*ast.Field, len(meths)), 0
for m, _ := range meths {
methList[i] = &ast.Field{nil, []*ast.Ident{ast.NewIdent(m.Name())}, m.FunctionType.ToAstExpr(pack, filename), nil, nil}
i++
}
interfaceMethods := &ast.FieldList{token.NoPos, methList, token.NoPos}
interfaceType := &ast.InterfaceType{token.NoPos, interfaceMethods, false}
interfaceDecl := &ast.TypeSpec{nil, ast.NewIdent(interfaceName), interfaceType, nil}
genDecl := &ast.GenDecl{nil, token.NoPos, token.TYPE, token.NoPos, []ast.Spec{interfaceDecl}, token.NoPos}
fieldNum := 0
for i := 0; i < len(fdecl.Type.Params.List); i++ {
if field == fdecl.Type.Params.List[i] {
fieldNum = i
break
}
}
oldFTypeLen := int(fdecl.Type.End() - fdecl.Type.Pos())
var lField, mField, rField *ast.Field
mField = &ast.Field{nil, []*ast.Ident{field.Names[nameNum]}, ast.NewIdent(interfaceName), nil, nil}
if nameNum > 0 {
lField = &ast.Field{nil, field.Names[:nameNum], field.Type, nil, nil}
}
if nameNum < len(field.Names)-1 {
rField = &ast.Field{nil, field.Names[(nameNum + 1):], field.Type, nil, nil}
}
newList := make([]*ast.Field, fieldNum)
copy(newList, fdecl.Type.Params.List[:fieldNum])
if lField != nil {
newList = append(newList, lField)
}
newList = append(newList, mField)
if rField != nil {
newList = append(newList, rField)
}
newList = append(newList, fdecl.Type.Params.List[(fieldNum+1):]...)
fdecl.Type.Params.List = newList
newFTypeLen, _ := utils.GetNodeLength(fdecl.Type)
newFTypeLen += len(fdecl.Name.Name) + 1
fmt.Printf("old %d new %d\n", oldFTypeLen, newFTypeLen)
allMod := newFTypeLen - oldFTypeLen
if allMod != 0 {
printerUtil.FixPositions(fdecl.Type.End(), allMod, file, true)
lines = printerUtil.GetLines(tokFile)
fmt.Printf("before last (mod = %d) : %v\n", allMod, lines)
for i, offset := range lines {
if offset > tokFile.Offset(fdecl.Type.Pos()) {
for j := i; j < len(lines); j++ {
lines[j] += allMod
}
break
}
}
fmt.Printf("after last (mod = %d) : %v\n", allMod, lines)
if !tokFile.SetLines(lines) {
panic("couldn't set lines for file " + tokFile.Name())
}
}
file.Decls = append(file.Decls, genDecl)
programTree.SaveFileExplicit(filename, fset, file)
return true, nil
}
func extractMethod(programTree *program.Program, filename string, lineStart int, colStart int, lineEnd int, colEnd int, methodName string, recieverVarLine int, recieverVarCol int) (bool, *errors.GoRefactorError) {
if ok, err := CheckExtractMethodParameters(filename, lineStart, colStart, lineEnd, colEnd, methodName, recieverVarLine, recieverVarCol); !ok {
return false, err
}
pack, file := programTree.FindPackageAndFileByFilename(filename)
if pack == nil {
return false, errors.ArgumentError("filename", "Program packages don't contain file '"+filename+"'")
}
fset := pack.FileSet
recvSym, err := getRecieverSymbol(programTree, pack, filename, recieverVarLine, recieverVarCol)
if err != nil {
return false, err
}
if recvSym != nil {
if recvSym.VariableType.Methods() != nil {
if _, ok := recvSym.VariableType.Methods().LookUp(methodName, ""); ok {
return false, errors.ArgumentError("methodName", "reciever already contains a method with name "+methodName)
}
}
switch t := recvSym.VariableType.(type) {
case *st.StructTypeSymbol:
if _, ok := t.Fields.LookUp(methodName, ""); ok {
return false, errors.ArgumentError("methodName", "reciever already contains a field with name "+methodName)
}
case *st.PointerTypeSymbol:
if _, ok := t.Fields.LookUp(methodName, ""); ok {
return false, errors.ArgumentError("methodName", "reciever already contains a field with name "+methodName)
}
}
} else {
if _, ok := pack.Symbols.LookUp(methodName, ""); ok {
return false, errors.ArgumentError("methodName", "package already contains a symbol with name "+methodName)
}
}
stmtList, nodeFrom, err := getExtractedStatementList(pack, file, filename, lineStart, colStart, lineEnd, colEnd)
if err != nil {
return false, err
}
fmt.Printf("list pos,end = %d,%d\n", stmtList[0].Pos(), stmtList[len(stmtList)-1].End())
params, declared := getParametersAndDeclaredIn(pack, stmtList, programTree)
fmt.Printf("list pos,end = %d,%d\n", stmtList[0].Pos(), stmtList[len(stmtList)-1].End())
if recvSym != nil {
if _, found := params.LookUp(recvSym.Name(), ""); !found {
return false, &errors.GoRefactorError{ErrorType: "extract method error", Message: "symbol, desired to be reciever, is not a parameter to extracted code"}
}
params.RemoveSymbol(recvSym.Name())
}
resultList := getResultList(programTree, pack, filename, stmtList)
results := st.NewSymbolTable(pack)
for _, r := range resultList {
results.AddSymbol(st.MakeVariable(st.NO_NAME, results, r))
}
fmt.Printf("list pos,end = %d,%d\n", stmtList[0].Pos(), stmtList[len(stmtList)-1].End())
pointerSymbols := getPointerPassedSymbols(stmtList, params, programTree.IdentMap)
fmt.Printf("list pos,end = %d,%d\n", stmtList[0].Pos(), stmtList[len(stmtList)-1].End())
for s, depth := range pointerSymbols {
println(s.Name(), depth)
}
applyPointerTransform(fset, file, stmtList, pointerSymbols, programTree.IdentMap)
fmt.Printf("list pos,end = %d,%d\n", stmtList[0].Pos(), stmtList[len(stmtList)-1].End())
fdecl := makeFuncDecl(methodName, stmtList, params, pointerSymbols, results, recvSym, pack, filename)
if nodeFrom != nil {
callExpr, callExprLen := makeCallExpr(methodName, params, pointerSymbols, stmtList[0].Pos(), recvSym, pack, filename)
if ok, errs := checkScoping(nodeFrom, stmtList, declared, programTree.IdentMap); !ok {
s := ""
errs.ForEach(func(sym st.Symbol) {
s += sym.Name() + " "
})
return false, &errors.GoRefactorError{ErrorType: "extract method error", Message: "extracted code declares symbols that are used in not-extracted code: " + s}
}
app := callExprLen - int(stmtList[len(stmtList)-1].End()-stmtList[0].Pos())
if app > 0 {
S, E := fset.Position(nodeFrom.Pos()), fset.Position(nodeFrom.End())
poses, ends := make([]token.Position, len(stmtList)), make([]token.Position, len(stmtList))
for i, stmt := range stmtList {
poses[i], ends[i] = fset.Position(stmt.Pos()), fset.Position(stmt.End())
}
tfile := printerUtil.GetFileFromFileSet(fset, filename)
baseMod := tfile.Base()
fmt.Printf("app = %d,baseMod = %d\n", app, baseMod)
fset, file = printerUtil.ReparseFile(file, filename, app, programTree.IdentMap)
tfile = printerUtil.GetFileFromFileSet(fset, filename)
lines := printerUtil.GetLines(tfile)
tfile.SetLines(lines[:len(lines)-(app)])
nodeFrom = printerUtil.FindNode(fset, file, S, E)
if baseMod != 1 {
for _, stmt := range stmtList {
printerUtil.FixPositions(0, 1-baseMod, stmt, true)
}
printerUtil.FixPositions(0, 1-baseMod, callExpr, true)
printerUtil.FixPositions(0, 1-baseMod, fdecl, true)
}
stmtList = make([]ast.Stmt, len(stmtList))
for i, _ := range stmtList {
stmtList[i] = printerUtil.FindNode(fset, file, poses[i], ends[i]).(ast.Stmt)
}
}
list := getStmtList(nodeFrom)
ind, found := getIndexOfStmt(stmtList[0], list)
if !found {
panic("didn't find replace origin")
}
fmt.Printf("stmtList length = %d\n", len(stmtList))
if ok, err := printerUtil.DeleteNodeList(fset, filename, file, stmtList); !ok {
return false, err
}
list = getStmtList(nodeFrom)
newList := make([]ast.Stmt, len(list)+1)
copy(newList, list[0:ind])
newList[ind] = &ast.ExprStmt{callExpr}
for i := ind; i < len(list); i++ {
newList[i+1] = list[i]
}
printerUtil.AddLineForRange(fset, filename, callExpr.Pos(), callExpr.End())
setStmtList(nodeFrom, newList)
printerUtil.FixPositionsExcept(callExpr.Pos(), callExprLen, file, true, map[ast.Node]bool{callExpr: true})
} else {
//stmtList[0] = utils.CopyAstNode(stmtList[0]).(ast.Stmt)
rs := stmtList[0].(*ast.ReturnStmt)
callExpr, callExprLen := makeCallExpr(methodName, params, pointerSymbols, rs.Results[0].Pos(), recvSym, pack, filename)
mod, baseMod := callExprLen-int(rs.Results[len(rs.Results)-1].End()-rs.Results[0].Pos()), 0
fset, file, baseMod = printerUtil.ModifyLine(pack.FileSet, file, filename, programTree.IdentMap, callExpr.Pos(), mod)
if baseMod != 1 {
fmt.Printf("baseMod = %d\n", baseMod)
printerUtil.FixPositions(0, 1-baseMod, callExpr, true)
printerUtil.FixPositions(0, 1-baseMod, rs, true)
printerUtil.FixPositions(0, 1-baseMod, fdecl, true)
}
fmt.Printf("results st,end = %d,%d, callExpr pos,end = %d,%d\n", rs.Results[0].Pos(), rs.Results[len(rs.Results)-1].End(), callExpr.Pos(), callExpr.End())
errs := replaceExprList(fset.Position(rs.Results[0].Pos()), fset.Position(rs.Results[len(rs.Results)-1].End()), []ast.Expr{callExpr}, fset, file)
if err, ok := errs[EXTRACT_METHOD]; ok {
return false, err
}
fmt.Printf("mod = %d\n", mod)
printerUtil.FixPositionsExcept(callExpr.Pos(), mod, file, true, map[ast.Node]bool{callExpr: true})
}
programTree.SaveFileExplicit(filename, fset, file)
print("AAAAAA")
if ok, fset, newF, err := printerUtil.AddDeclExplicit(fset, filename, file, fset, filename, file, fdecl, programTree.IdentMap); !ok {
return false, err
} else {
print("BBBBBB")
programTree.SaveFileExplicit(filename, fset, newF)
}
return true, nil
}