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46d013d44f
These lines are unreachable, all paths above them lead to earlier returns. Signed-off-by: Stephen Kitt <steve@sk2.org> Co-authored-by: John Kerl <kerl.john.r@gmail.com>
106 lines
2.5 KiB
Go
106 lines
2.5 KiB
Go
package lib
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import (
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"fmt"
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"os"
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"path"
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"runtime"
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)
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// InternalCodingErrorIf is a lookalike for C's __FILE__ and __LINE__ printing,
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// with exit 1 if the condition is true.
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func InternalCodingErrorIf(condition bool) {
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if !condition {
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return
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}
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_, fileName, fileLine, ok := runtime.Caller(1)
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if ok {
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fmt.Fprintf(
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os.Stderr,
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"Internal coding error detected at file %s line %d\n",
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// Full path preferred but breaks diffs on regression-test actual vs expected
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// stderr comparison on expect-fail cases.
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path.Base(fileName),
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fileLine,
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)
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} else {
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fmt.Fprintf(
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os.Stderr,
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"Internal coding error detected at file %s line %s\n",
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"(unknown)",
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"(unknown)",
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)
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}
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// Uncomment this and re-run if you want to get a stack trace to get the
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// call-tree that led to the indicated file/line:
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// panic("eek")
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os.Exit(1)
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}
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// InternalCodingErrorWithMessageIf is a lookalike for C's __FILE__ and
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// __LINE__ printing, with exit 1 if the condition is true.
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func InternalCodingErrorWithMessageIf(condition bool, message string) {
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if !condition {
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return
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}
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_, fileName, fileLine, ok := runtime.Caller(1)
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if ok {
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fmt.Fprintf(
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os.Stderr,
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"Internal coding error detected at file %s line %d: %s\n",
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path.Base(fileName),
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fileLine,
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message,
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)
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} else {
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fmt.Fprintf(
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os.Stderr,
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"Internal coding error detected at file %s line %s: %s\n",
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"(unknown)",
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"(unknown)",
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message,
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)
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}
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// Uncomment this and re-run if you want to get a stack trace to get the
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// call-tree that led to the indicated file/line:
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// panic("eek")
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os.Exit(1)
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}
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// InternalCodingErrorPanic is like InternalCodingErrorIf, expect that it
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// panics the process (for stack trace, which is usually not desired), and that
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// it requires the if-test to be at the caller.
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func InternalCodingErrorPanic(message string) {
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_, fileName, fileLine, ok := runtime.Caller(1)
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if ok {
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panic(
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fmt.Sprintf(
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"Internal coding error detected at file %s line %d: %s\n",
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path.Base(fileName),
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fileLine,
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message,
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),
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)
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} else {
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panic(
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fmt.Sprintf(
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"Internal coding error detected at file %s line %s: %s\n",
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"(unknown)",
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"(unknown)",
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message,
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),
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)
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}
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}
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// WhereAreWe shows a stack trace from the current callsite.
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func WhereAreWe() {
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// Start at 1, not 0, since this function itself is not of interest.
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for i := 1; i < 20; i++ {
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_, fileName, fileLine, ok := runtime.Caller(i)
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if !ok {
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break
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}
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fmt.Printf(" %s %d\n", fileName, fileLine)
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}
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}
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