62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
package debug
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import (
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"fmt"
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)
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func Fail(reason string) {
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if len(reason) == 0 {
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reason = "Debug failure."
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} else {
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reason = "Debug failure. " + reason
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}
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// runtime.Breakpoint()
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panic(reason)
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}
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func FailBadSyntaxKind(node interface{ KindString() string }, message ...any) {
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var msg string
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if len(message) == 0 {
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msg = "Unexpected node."
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} else {
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msg = fmt.Sprint(message...)
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}
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Fail(fmt.Sprintf("%s\nNode %s was unexpected.", msg, node.KindString()))
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}
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func AssertNever(member any, message ...any) {
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var msg string
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if len(message) == 0 {
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msg = "Illegal value:"
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} else {
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msg = fmt.Sprint(message...)
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}
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var detail string
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if m, ok := member.(interface{ KindString() string }); ok {
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detail = m.KindString()
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} else if m, ok := member.(fmt.Stringer); ok {
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detail = m.String()
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} else {
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detail = fmt.Sprintf("%v", member)
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}
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Fail(fmt.Sprintf("%s %s", msg, detail))
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}
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func Assert(value bool, message ...any) {
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if value {
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return
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}
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assertSlow(message...)
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}
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func assertSlow(message ...any) {
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// See https://dave.cheney.net/2020/05/02/mid-stack-inlining-in-go
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var msg string
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if len(message) > 0 {
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msg = "False expression: " + fmt.Sprint(message...)
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} else {
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msg = "False expression."
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}
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Fail(msg)
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}
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