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How to use callName method of ast Package

Best Syzkaller code snippet using ast.callName

messages.go

Source:messages.go

...84		call, ok := c.Node().(*ast.CallExpr)85		if !ok {86			return true87		}88		recvName, funcName, callName, argOffset, argPrefix, ok := messagesInfo(call)89		if !ok {90			return true91		}92		_, isFmt := fmtMap[callName]93		isErr := recvName == "errors"94		isLog := strings.HasPrefix(callName, "s.Log") || strings.HasPrefix(callName, "testing.ContextLog")95		// preArgs keeps the arguments before the formatting string.96		var preArgs []argInfo97		for _, a := range call.Args[:argOffset] {98			preArgs = append(preArgs, argInfo{otherArg, "", false, a})99		}100		var args []argInfo101		for _, a := range call.Args[argOffset:] {102			if lit, ok := a.(*ast.BasicLit); ok && lit.Kind == token.STRING {103				val, err := strconv.Unquote(lit.Value)104				if err != nil {105					return true106				}107				args = append(args, argInfo{stringArg, val, false, lit})108			} else if ident, ok := a.(*ast.Ident); ok && ident.Name == "err" {109				// Again, checking the identifier name is unreliable,110				// but getting the actual type here seems hard/impossible.111				// This means that we'll miss error values with other names.112				args = append(args, argInfo{errorArg, "", false, ident})113			} else {114				args = append(args, argInfo{otherArg, "", false, a})115			}116		}117		addIssue := func(msg, link string, fixable bool) {118			issues = append(issues, &Issue{Pos: fs.Position(call.Pos()), Msg: msg, Link: link, Fixable: fixable})119		}120		// Used Logf("Some message") instead of Log("Some message").121		if isFmt && len(args) == 1 {122			// If there is a verb in the string argument, there is a possibility of123			// missing other arguments. If so, define as unfixable and leave as it is.124			fixable := (args[0].typ != stringArg || countVerbs(args[0].val) == 0)125			if !fix {126				addIssue(fmt.Sprintf(`Use %v(%v"<msg>") instead of %v(%v"<msg>")`,127					fmtMap[callName], argPrefix, callName, argPrefix), printfURL, fixable)128			} else if fixable {129				callName = fmtMap[callName]130				funcName = strings.TrimPrefix(callName, recvName+".")131				isFmt = false132			}133		}134		// Used Logf("Got %v", i) instead of Log("Got ", i).135		if !isErr && isFmt && len(args) == 2 && args[0].typ == stringArg && strings.HasSuffix(args[0].val, " %v") {136			if !fix {137				addIssue(fmt.Sprintf(`Use %v(%v"<msg> ", val) instead of %v(%v"<msg> %%v", val)`,138					fmtMap[callName], argPrefix, callName, argPrefix), printfURL, true)139			} else {140				args[0].val = strings.TrimSuffix(args[0].val, "%v")141				args[0].fixed = true142				callName = fmtMap[callName]143				funcName = strings.TrimPrefix(callName, recvName+".")144				isFmt = false145			}146		}147		// Used Log("Some error", err) instead of Log("Some error: ", err).148		if !isFmt && !isErr && len(args) == 2 && args[0].typ == stringArg &&149			args[1].typ == errorArg && !strings.HasSuffix(args[0].val, ": ") {150			if !fix {151				addIssue(fmt.Sprintf(`%v string arg should end with ": " when followed by error`, callName), logFmtURL, true)152			} else {153				// If there are trailing punctuations, it will be checked by lint below,154				// so remove them before adding colon and space.155				// Just a colon or a space should be removed before adding colon and space too.156				args[0].val = strings.TrimRight(args[0].val, ".!: ") + ": "157				args[0].fixed = true158			}159		}160		// Used errors.Errorf("something failed: %v", err) instead of errors.Wrap(err, "something failed").161		if callName == "errors.Errorf" && len(args) >= 2 && args[0].typ == stringArg &&162			args[len(args)-1].typ == errorArg && strings.HasSuffix(args[0].val, "%v") {163			if !fix {164				var formatSuffix, varArgs string165				if len(args) > 2 {166					formatSuffix, varArgs = "f", ", ..."167				}168				addIssue(fmt.Sprintf(`Use errors.Wrap%s(err, "<msg>"%s) instead of errors.Errorf("<msg>: %%v"%s, err)`, formatSuffix, varArgs, varArgs), errPkgURL, true)169			} else {170				funcName = "Wrapf"171				if len(args) == 2 {172					funcName = "Wrap"173					isFmt = false174				}175				callName = recvName + "." + funcName176				args[0].val = strings.TrimRight(strings.TrimSuffix(args[0].val, "%v"), ".!: ")177				args[0].fixed = true178				lastArg := args[len(args)-1]179				args = args[:len(args)-1]180				// Position information may affect the order of expression nodes,181				// so clear it.182				lastArg.node.(*ast.Ident).NamePos = token.NoPos183				preArgs = append(preArgs, lastArg)184			}185		}186		// Used errors.Wrap(err, "something failed: ") instead of errors.Wrap(err, "something failed").187		if callName == "errors.Wrap" && len(args) == 1 && args[0].typ == stringArg &&188			strings.HasSuffix(strings.TrimSpace(args[0].val), ":") {189			messageTrimmed := strings.TrimSuffix(strings.TrimSpace(args[0].val), ":")190			if !fix {191				addIssue(fmt.Sprintf(`Use errors.Wrap(err, "%v") instead of errors.Wrap(err, "%v")`,192					messageTrimmed, args[0].val), errPkgURL, true)193			} else {194				args[0].val = messageTrimmed195				args[0].fixed = true196			}197		}198		// Used errors.Wrapf(err, "something failed: %v", err) instead of errors.Wrap(err, "something failed")199		if callName == "errors.Wrapf" {200			for _, e := range args {201				if e.typ == errorArg {202					addIssue(`Use errors.Wrap(err, "<msg>") instead of errors.Wrapf(err, "<msg>: %v", err)`, errConstURL, true)203					break204				}205			}206		}207		// Used Log(err) instead of Log("Some error: ", err).208		if !isErr && len(args) == 1 && args[0].typ == errorArg {209			addIssue(fmt.Sprintf(`Use %v(%v"Something failed: ", err) instead of %v(%verr)`,210				callName, argPrefix, callName, argPrefix), commonFmtURL, false)211		}212		// Lower-level string checks.213		if len(args) >= 1 && args[0].typ == stringArg && args[0].val != "" {214			// Used Log("Some message.") or Log("Some message!") instead of Log("Some message").215			if strings.LastIndexAny(args[0].val, ".!") == len(args[0].val)-1 {216				if !fix {217					u := logFmtURL218					if isErr {219						u = errFmtURL220					}221					addIssue(fmt.Sprintf("%v string arg should not contain trailing punctuation", callName), u, true)222				} else {223					args[0].val = strings.TrimRight(args[0].val, ".!")224					args[0].fixed = true225				}226			}227			// Used Log("Some message\nMore text") instead of Log("Some message") and Log("More text").228			if strings.Contains(args[0].val, "\n") {229				addIssue(fmt.Sprintf("%v string arg should not contain embedded newlines", callName), commonFmtURL, false)230			}231			// Used Logf("'%s'", ...) instead of Logf("%q", ...).232			if isFmt && invalidQuotedVerbs.MatchString(args[0].val) {233				if !fix {234					addIssue("Use %q to quote values instead of manually quoting them", commonFmtURL, true)235				} else {236					args[0].val = invalidQuotedVerbs.ReplaceAllString(args[0].val, "%q")237					args[0].fixed = true238				}239			}240			// Logs should start with upper letters while errors should start with lower letters.241			// This rule does not apply if messages start with a proper noun, so we check a few242			// hard-coded words only.243			var words = []string{244				"bad",245				"can",246				"can't",247				"cannot",248				"could",249				"couldn't",250				"didn't",251				"error",252				"expected",253				"failed",254				"found",255				"get",256				"getting",257				"got",258				"invalid",259				"no",260				"the",261				"too",262				"unexpected",263				"unknown",264				"unsupported",265			}266			for _, word := range words {267				if !strings.HasPrefix(strings.ToLower(args[0].val), word+" ") {268					continue269				}270				exp := word271				if !isErr {272					exp = strings.ToUpper(word[:1]) + word[1:]273				}274				if strings.HasPrefix(args[0].val, exp) {275					continue276				}277				if !fix {278					if isErr {279						addIssue("Messages of the error type should not be capitalized", formattingURL, true)280					} else if isLog {281						addIssue("Log messages should be capitalized", formattingURL, true)282					} else {283						addIssue("Test failure messages should be capitalized", formattingURL, true)284					}285				} else {286					args[0].val = exp + args[0].val[len(exp):]287					args[0].fixed = true288				}289			}290		}291		// The number of verbs and the number of arguments must match.292		if isFmt && len(args) >= 1 && args[0].typ == stringArg && countVerbs(args[0].val) != len(args)-1 {293			addIssue("The number of verbs in format literal mismatches with the number of arguments", fmtURL, false)294		}295		// Used verbs in non *f families.296		if !isFmt && len(args) >= 1 && args[0].typ == stringArg && hasVerbs(args[0].val) {297			addIssue(fmt.Sprintf("%s has verbs in the first string (do you mean %s?)", callName, fmtMapRev[callName]), formattingURL, false)298		}299		// Error messages should contain some surrounding context.300		if !isLog && len(args) >= 1 && args[0].typ == stringArg && args[0].val == "" {301			addIssue("Error message should have some surrounding context, so must not empty", errFmtURL, false)302		}303		if fix {304			newarg := append(makeCallArgs(preArgs), makeCallArgs(args)...)305			correct := &ast.CallExpr{306				Fun: &ast.SelectorExpr{307					X: &ast.Ident{308						Name:    recvName,309						NamePos: call.Pos(),310					},311					Sel: &ast.Ident{312						Name: funcName,313					},314				},315				Args: newarg,316			}317			c.Replace(correct)318		}319		return true320	}, nil)321	return issues322}323// messagesSprintf checks calls to logging- and error-related functions324// which has fmt.Sprintf argument inside them.325func messagesSprintf(fs *token.FileSet, f *ast.File, fix bool) []*Issue {326	var issues []*Issue327	astutil.Apply(f, func(c *astutil.Cursor) bool {328		call, ok := c.Node().(*ast.CallExpr)329		if !ok {330			return true331		}332		recvName, funcName, callName, argOffset, argPrefix, ok := messagesInfo(call)333		if !ok {334			return true335		}336		_, isFmt := fmtMap[callName]337		// Used Log(fmt.Sprintf(...)) instead of Logf(...)338		if argcall, ok := call.Args[argOffset].(*ast.CallExpr); ok && isFMTSprintf(argcall) && len(call.Args)-argOffset == 1 {339			if !fix {340				msg := ""341				if isFmt {342					msg = fmt.Sprintf(`Use %v(%v...) instead of %v(%vfmt.Sprintf(...))`, callName, argPrefix, callName, argPrefix)343				} else {344					msg = fmt.Sprintf(`Use %v(%v...) instead of %v(%vfmt.Sprintf(...))`, fmtMapRev[callName], argPrefix, callName, argPrefix)345				}346				issues = append(issues, &Issue{347					Pos:     fs.Position(call.Pos()),348					Msg:     msg,349					Link:    printfURL,350					Fixable: true,351				})352			} else {353				newarg := append([]ast.Expr(nil), call.Args[:argOffset]...)354				newarg = append(newarg, argcall.Args...)355				sel := funcName356				if !isFmt {357					sel = strings.TrimPrefix(fmtMapRev[callName], recvName+".")358				}359				correct := &ast.CallExpr{360					Fun: &ast.SelectorExpr{361						X: &ast.Ident{362							Name:    recvName,363							NamePos: call.Pos(),364						},365						Sel: &ast.Ident{366							Name: sel,367						},368					},369					Args: newarg,370				}371				c.Replace(correct)372			}373		}374		return true375	}, nil)376	return issues377}378// messagesInfo returns function name and argument information.379func messagesInfo(call *ast.CallExpr) (recvName, funcName, callName string, argOffset int, argPrefix string, ok bool) {380	argOffset = -1381	sel, ok := call.Fun.(*ast.SelectorExpr)382	if !ok {383		return384	}385	x, ok := sel.X.(*ast.Ident)386	if !ok {387		return388	}389	recvName = x.Name390	funcName = sel.Sel.Name391	callName = recvName + "." + funcName392	switch callName {393	// Just matching a variable name is hacky, but getting the actual type seems394	// very challenging, if not impossible (as ":=" may be used to assign types395	// returned by functions exported by other packages).396	case "s.Log", "s.Logf", "s.Error", "s.Errorf", "s.Fatal", "s.Fatalf", "errors.New", "errors.Errorf":397		argOffset = 0398	case "testing.ContextLog", "testing.ContextLogf":399		argOffset = 1400		argPrefix = "ctx, "401	case "errors.Wrap", "errors.Wrapf":402		argOffset = 1403		argPrefix = "err, "404	default:405		ok = false406	}...

function.go

Source:function.go

1// Copyright 2020 cloudeng llc. All rights reserved.2// Use of this source code is governed by the Apache-2.03// license that can be found in the LICENSE file.4// Package locateutil provides utility routines for use with its parent5// locate package.6package locateutil7import (8	"go/ast"9	"go/token"10	"go/types"11	"regexp"12	"sort"13	"golang.org/x/tools/go/packages"14)15// FuncDesc represents a function definition, declaration and the file16// and position within that file. Decl will be nil if Abstract is true.17type FuncDesc struct {18	Type     *types.Func19	Abstract bool20	Decl     *ast.FuncDecl21	File     *ast.File22	Position token.Position23	Package  *packages.Package24}25// Functions returns the functions in the supplied package that match the26// regular expression. If noMethods is false then methods are also returned.27func Functions(pkg *packages.Package, re *regexp.Regexp, noMethods bool) []FuncDesc {28	descs := []FuncDesc{}29	for k, obj := range pkg.TypesInfo.Defs {30		if obj == nil || !k.IsExported() || !re.MatchString(k.Name) {31			continue32		}33		fn, ok := obj.(*types.Func)34		if !ok {35			continue36		}37		recv := fn.Type().(*types.Signature).Recv()38		abstract := false39		if recv != nil {40			if noMethods {41				continue42			}43			abstract = IsAbstract(fn)44		}45		pos := pkg.Fset.PositionFor(k.Pos(), false)46		var file *ast.File47		for i, v := range pkg.CompiledGoFiles {48			if v == pos.Filename {49				file = pkg.Syntax[i]50			}51		}52		descs = append(descs, FuncDesc{53			Package:  pkg,54			Type:     fn,55			Abstract: abstract,56			Decl:     findFuncOrMethodDecl(fn, file),57			Position: pos,58			File:     file,59		})60	}61	sort.SliceStable(descs, func(i, j int) bool {62		if descs[i].Position.Filename == descs[j].Position.Filename {63			return descs[i].Position.Offset < descs[j].Position.Offset64		}65		return descs[i].Position.Filename < descs[j].Position.Filename66	})67	return descs68}69func findFuncOrMethodDecl(fn *types.Func, file *ast.File) *ast.FuncDecl {70	for _, d := range file.Decls {71		d, ok := d.(*ast.FuncDecl)72		if !ok {73			continue74		}75		if d.Name.NamePos == fn.Pos() {76			return d77		}78	}79	return nil80}81type funcVisitor struct {82	callname *regexp.Regexp83	deferred bool84	nodes    []ast.Node85}86func callMatches(callexpr *ast.CallExpr, callname *regexp.Regexp) bool {87	switch id := callexpr.Fun.(type) {88	case *ast.Ident:89		return callname.MatchString(id.String())90	case *ast.SelectorExpr:91		if sel, ok := id.X.(*ast.Ident); ok {92			return callname.MatchString(sel.String() + "." + id.Sel.String())93		}94	case *ast.CallExpr:95		r := callMatches(id, callname)96		return r97	}98	return false99}100func (v *funcVisitor) Visit(node ast.Node) ast.Visitor {101	if node == nil {102		return nil103	}104	switch n := node.(type) {105	case *ast.DeferStmt:106		if !v.deferred {107			return nil108		}109		if callMatches(n.Call, v.callname) {110			v.nodes = append(v.nodes, node)111		}112	case *ast.ExprStmt:113		if v.deferred {114			return nil115		}116		call, ok := n.X.(*ast.CallExpr)117		if !ok {118			return nil119		}120		if callMatches(call, v.callname) {121			v.nodes = append(v.nodes, node)122		}123	}124	return v125}126// FunctionCalls determines if the supplied function declaration contains a call127// 'callname' where callname is either a function name or a selector (eg. foo.bar).128// If deferred is true the function call must be defer'ed.129func FunctionCalls(decl *ast.FuncDecl, callname *regexp.Regexp, deferred bool) []ast.Node {130	if len(decl.Body.List) == 0 {131		return nil132	}133	v := &funcVisitor{134		callname: callname,135		deferred: deferred,136	}137	ast.Walk(v, decl)138	return v.nodes139}140// FunctionStatements returns number of top-level statements in a function.141func FunctionStatements(decl *ast.FuncDecl) int {142	return len(decl.Body.List)143}144// FunctionHasComment returns true if any of the comments associated or within145// the function contain the specified text.146func FunctionHasComment(decl *ast.FuncDecl, cmap ast.CommentMap, text string) bool {147	if CommentGroupsContain([]*ast.CommentGroup{decl.Doc}, text) {148		return true149	}150	for _, stmt := range decl.Body.List {151		if cg := cmap[stmt]; cg != nil {152			if CommentGroupsContain(cg, text) {153				return true154			}155		}156	}157	return false158}...

builtin.go

Source:builtin.go

1package builders2import "go/ast"3// Make returns make(typ, length) if capacity is less or equal to 0.4// Otherwise, returns make(typ, length, capacity)5func Make(typ ast.Expr, length, capacity int) *ast.CallExpr {6	var c ast.Expr7	if capacity > 0 {8		c = IntegerLit(capacity)9	}10	return MakeExpr(typ, IntegerLit(length), c)11}12// MakeExpr returns make(typ, length) if capacity is nil13// Otherwise, returns make(typ, length, capacity)14func MakeExpr(typ, length, capacity ast.Expr) *ast.CallExpr {15	args := []ast.Expr{typ, length}16	if capacity != nil {17		args = append(args, capacity)18	}19	return CallName("make", args...)20}21// Len returns len(x).22func Len(x ast.Expr) *ast.CallExpr {23	return CallName("len", x)24}25// Cap returns cap(x).26func Cap(x ast.Expr) *ast.CallExpr {27	return CallName("cap", x)28}29// New returns new(x).30func New(x ast.Expr) *ast.CallExpr {31	return CallName("new", x)32}33// Copy returns copy(dst, src).34func Copy(dst, src ast.Expr) *ast.CallExpr {35	return CallName("copy", dst, src)36}37// Append returns append(slice, elem1, elem2, ..., elemN).38func Append(slice ast.Expr, elem ...ast.Expr) *ast.CallExpr {39	args := append([]ast.Expr{slice}, elem...)40	return CallName("append", args...)41}42// Close returns close(ch).43func Close(ch ast.Expr) *ast.CallExpr {44	return CallName("close", ch)45}...

callName

Using AI Code Generation

1func main() {2    a.callName()3}4func main() {5    a.callName()6}7func main() {8    a.callName()9}10func main() {11    a.callName()12}13func main() {14    a.callName()15}16func main() {17    a.callName()18}19func main() {20    a.callName()21}22func main() {23    a.callName()24}25func main() {26    a.callName()27}28func main() {29    a.callName()30}31func main() {32    a.callName()33}34func main() {35    a.callName()36}37func main() {38    a.callName()39}40func main() {41    a.callName()42}

callName

Using AI Code Generation

1import "fmt"2type ast struct {3}4func (a ast) callName() {5fmt.Println("Name:", a.name)6}7func main() {8a := ast{name: "Gopher"}9a.callName()10}11import "fmt"12type ast struct {13}14func (a *ast) callName() {15fmt.Println("Name:", a.name)16}17func main() {18a := ast{name: "Go"}19a.callName()20}21import "fmt"22type ast struct {23}24func (a *ast) callName() {25fmt.Println("Name:", a.name)26}27func main() {28a := ast{name: "Go"}29}

callName

Using AI Code Generation

1import "fmt"2type ast struct {3}4func (a ast) callName() {5	fmt.Println(a.name)6}7func main() {8	a := ast{"Ast"}9	a.callName()10}

callName

Using AI Code Generation

1import "fmt"2func main() {3    a.callName()4}5type ast struct {}6func (a ast) callName() {7    fmt.Println("Hello World")8}

callName

Using AI Code Generation

1import "fmt"2func main(){3ast := astClass{}4ast.callName()5}6import "fmt"7type astClass struct{8}9func (ast *astClass) callName(){10fmt.Println(ast.name)11}12if (variable != "" || variable != " " || variable != "  " || variable != "   " || variable != "    ") {13}14import (15func main() {16    var a interface{}17    fmt.Println(reflect.TypeOf(a))18    fmt.Println(reflect.TypeOf(a).Kind())19}20import (21func main() {22    wg.Add(1)23    go func() {24        defer wg.Done()25        time.Sleep(time.Second * 10)26        fmt.Println("Hello")27    }()28    wg.Wait()29}30sync.runtime_Semacquire(0xc4200141b4)31sync.(*WaitGroup).Wait(0xc4200141a8)32main.main()33main.main.func1(0xc4200141a8)

callName

Using AI Code Generation

1import "fmt"2import "os"3import "bufio"4import "strings"5import "strconv"6import "time"7import "runtime"8import "math"9import "math/rand"10import "unicode"11import "unicode/utf8"12import "container/vector"13import "container/list"14import "container/ring"15import "container/heap"16import "container/stack"17import "container/tree"18import "container/priority_queue"19import "container/queue"20import "container/set"21import "container/trie"22import "container/stack"23import "container/queue"24import "container/heap"25import "container/vector"26import "container/list"27import "container/ring"28import "container/set"29import "container/trie"30import "container/stack"31import "container/queue"32import "container/heap"33import "container/vector"34import "container/list"35import "container/ring"36import "container/set"37import "container/trie"38import "container/stack"39import "container/queue"40import "container/heap"41import "container/vector"42import "container/list"43import "container/ring"44import "container/set"45import "container/trie"46import "container/stack"47import "container/queue"48import "container/heap"49import "container/vector"50import "container/list"51import "container/ring"52import "container/set"53import "container/trie"54import "container/stack"55import "container/queue"56import "container/heap"57import "container/vector"58import "container/list"59import "container/ring"60import "container/set"61import "container/trie"62import "container/stack"63import "container/queue"64import "container/heap"65import "container/vector"66import "container/list"67import "container/ring"68import "container/set"69import "container/trie"70import "container/stack"71import "container/queue"72import "container/heap"73import "container/vector"74import "container/list"75import "container/ring"76import "container/set"77import "container/trie"78import "container/stack"79import "container/queue"80import "container/heap"81import "container/vector"82import "container/list"83import "container/ring"84import "container/set"85import "container/trie"86import "container/stack"87import "container/queue"88import "container/heap"89import

callName

Using AI Code Generation

1import "fmt"2func main() {3    a := ast{Name: "John", Age: 23}4    fmt.Println(a.callName())5}6import "fmt"7func main() {8    a := ast{Name: "John", Age: 23}9    fmt.Println(a.callAge())10}11import "fmt"12func main() {13    a := ast{Name: "John", Age: 23}14    fmt.Println(a.callAge())15}16import "fmt"17func main() {18    a := ast{Name: "John", Age: 23}19    fmt.Println(a.callAge())20}21import "fmt"22func main() {23    a := ast{Name: "John", Age: 23}24    fmt.Println(a.callAge())25}26import "fmt"27func main() {28    a := ast{Name: "John", Age: 23}29    fmt.Println(a.callAge())30}31import "fmt"32func main() {33    a := ast{Name: "John", Age: 23}34    fmt.Println(a.callAge())35}36import "fmt"37func main() {38    a := ast{Name: "John", Age: 23}39    fmt.Println(a.callAge())40}41import "fmt"42func main() {43    a := ast{Name: "John", Age: 23}44    fmt.Println(a.callAge())45}46import "fmt"47func main() {48    a := ast{Name: "John", Age: 23}49    fmt.Println(a.callAge())50}

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