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expr.go
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expr.go
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package main
import (
"errors"
"fmt"
"go/ast"
"go/parser"
"os"
"strconv"
"strings"
sgr "github.com/foize/go.sgr"
"github.com/shippomx/goins/frame"
)
func expr(e string) error {
ex, err := parser.ParseExpr(e)
if err != nil {
return err
}
switch ex := ex.(type) {
case *ast.CallExpr:
switch fun := ex.Fun.(type) {
case *ast.SelectorExpr:
k := fun.X.(*ast.Ident).Name
if v, ok := workspace[k]; ok {
switch fun.Sel.Name {
case "delete":
if len(ex.Args) != 1 {
return errors.New("keep() expects exactly one argument")
}
return v.Delete(ex.Args[0].(*ast.BasicLit).Value)
case "dedup":
if len(ex.Args) != 0 {
return errors.New("dedup() expects no arguments")
}
v.Dedup()
return nil
case "check":
if len(ex.Args) != 0 {
return errors.New("check() expects no arguments")
}
kept := v.Dedup()
for i := 0; i < len(kept); i++ {
for j := i + 1; j < len(kept); j++ {
if frame.HasDeadLock(kept[i], kept[j]) {
sgr.Println("================= [fg-red]WARNING DEAD LOCK [reset]=================\n")
sgr.Printf("goroutine [fg-blue]%d[reset] has surspicous DEAD LOCK with goroutine [fg-blue]%d[reset]\n", kept[i].Id, kept[j].Id)
sgr.Printf("LockHolders of goroutine %d: [fg-green]%v[reset]\n", kept[i].Id, kept[i].LockHolders)
sgr.Printf("LockHolders of goroutine %d: [fg-green]%v[reset]\n", kept[j].Id, kept[j].LockHolders)
}
}
}
return nil
case "keep":
if len(ex.Args) != 1 {
return errors.New("delete() expects exactly one argument")
}
return v.Keep(ex.Args[0].(*ast.BasicLit).Value)
case "save":
if len(ex.Args) != 1 {
return errors.New("save() expects exactly one argument")
}
fn := strings.Trim(ex.Args[0].(*ast.BasicLit).Value, "\"")
if _, err := os.Stat(fn); err == nil {
pmpt := fmt.Sprintf("File %s already exists, overwrite it? [Y]/n: ", fn)
var confirm string
if confirm, err = line.Prompt(pmpt); err != nil {
return err
}
confirm = strings.ToLower(strings.TrimSpace(confirm))
if confirm != "y" && confirm != "" {
return nil
}
}
if err := v.Save(fn); err != nil {
return err
}
fmt.Printf("Goroutines are saved to file %s.\n", fn)
case "search":
var err error
offset := 0
limit := 10
switch len(ex.Args) {
case 0:
return errors.New("search() expects at least one argument")
case 1:
case 2:
offset, err = strconv.Atoi(ex.Args[1].(*ast.BasicLit).Value)
if err != nil {
return fmt.Errorf("invalid argument %s", ex.Args[1])
}
case 3:
offset, err = strconv.Atoi(ex.Args[1].(*ast.BasicLit).Value)
if err != nil {
return fmt.Errorf("invalid argument 'offset' %s", ex.Args[1])
}
limit, err = strconv.Atoi(ex.Args[2].(*ast.BasicLit).Value)
if err != nil {
return fmt.Errorf("invalid argument 'limit' %s", ex.Args[2])
}
default:
return errors.New("search() expects at most three arguments")
}
v.Search(ex.Args[0].(*ast.BasicLit).Value, offset, limit)
return nil
case "show":
var err error
offset := 0
limit := 10
switch len(ex.Args) {
case 0:
case 1:
offset, err = strconv.Atoi(ex.Args[0].(*ast.BasicLit).Value)
if err != nil {
return fmt.Errorf("invalid argument %s", ex.Args[0])
}
case 2:
offset, err = strconv.Atoi(ex.Args[0].(*ast.BasicLit).Value)
if err != nil {
return fmt.Errorf("invalid argument 'offset' %s", ex.Args[0])
}
limit, err = strconv.Atoi(ex.Args[1].(*ast.BasicLit).Value)
if err != nil {
return fmt.Errorf("invalid argument 'limit' %s", ex.Args[1])
}
default:
return errors.New("show() expects at least one and at most two arguments")
}
v.Show(offset, limit)
return nil
default:
return fmt.Errorf("unknown instrution")
}
}
default:
return fmt.Errorf("unknown instrution")
}
case *ast.Ident:
if v, ok := workspace[ex.String()]; ok {
v.Summary()
} else {
return fmt.Errorf("variable %s not found in workspace", e)
}
default:
return fmt.Errorf("unknown instrution")
}
return nil
}