// doQuery poses query q to the guru and writes its response and
// error (if any) to out.
func doQuery(out io.Writer, q *query, useJson bool) {
fmt.Fprintf(out, "-------- @%s %s --------\n", q.verb, q.id)
var buildContext = build.Default
buildContext.GOPATH = "testdata"
query := guru.Query{
Mode: q.verb,
Pos: q.queryPos,
Build: &buildContext,
Scope: []string{q.filename},
Reflection: true,
}
if err := guru.Run(&query); err != nil {
fmt.Fprintf(out, "\nError: %s\n", err)
return
}
if useJson {
// JSON output
b, err := json.MarshalIndent(query.Serial(), "", "\t")
if err != nil {
fmt.Fprintf(out, "JSON error: %s\n", err.Error())
return
}
out.Write(b)
fmt.Fprintln(out)
} else {
// "plain" (compiler diagnostic format) output
WriteResult(out, &query)
}
}
// doQuery poses query q to the guru and writes its response and
// error (if any) to out.
func doQuery(out io.Writer, q *query, json bool) {
fmt.Fprintf(out, "-------- @%s %s --------\n", q.verb, q.id)
var buildContext = build.Default
buildContext.GOPATH = "testdata"
pkg := filepath.Dir(strings.TrimPrefix(q.filename, "testdata/src/"))
gopathAbs, _ := filepath.Abs(buildContext.GOPATH)
var outputMu sync.Mutex // guards outputs
var outputs []string // JSON objects or lines of text
outputFn := func(fset *token.FileSet, qr guru.QueryResult) {
outputMu.Lock()
defer outputMu.Unlock()
if json {
jsonstr := string(qr.JSON(fset))
// Sanitize any absolute filenames that creep in.
jsonstr = strings.Replace(jsonstr, gopathAbs, "$GOPATH", -1)
outputs = append(outputs, jsonstr)
} else {
// suppress position information
qr.PrintPlain(func(_ interface{}, format string, args ...interface{}) {
outputs = append(outputs, fmt.Sprintf(format, args...))
})
}
}
query := guru.Query{
Pos: q.queryPos,
Build: &buildContext,
Scope: []string{pkg},
Reflection: true,
Output: outputFn,
}
if err := guru.Run(q.verb, &query); err != nil {
fmt.Fprintf(out, "\nError: %s\n", err)
return
}
// In a "referrers" query, references are sorted within each
// package but packages are visited in arbitrary order,
// so for determinism we sort them. Line 0 is a caption.
if q.verb == "referrers" {
sort.Strings(outputs[1:])
}
for _, output := range outputs {
fmt.Fprintf(out, "%s\n", output)
}
if !json {
io.WriteString(out, "\n")
}
}
func TestIssue14684(t *testing.T) {
var buildContext = build.Default
buildContext.GOPATH = "testdata"
query := guru.Query{
Pos: "testdata/src/README.txt:#1",
Build: &buildContext,
}
err := guru.Run("freevars", &query)
if err == nil {
t.Fatal("guru query succeeded unexpectedly")
}
if got, want := err.Error(), "testdata/src/README.txt is not a Go source file"; got != want {
t.Errorf("query error was %q, want %q", got, want)
}
}