vendor tsgo

tools/tsgo/internal/debug/debug.go

@@ -0,0 +1,61 @@
+package debug
+
+import (
+	"fmt"
+)
+
+func Fail(reason string) {
+	if len(reason) == 0 {
+		reason = "Debug failure."
+	} else {
+		reason = "Debug failure. " + reason
+	}
+	// runtime.Breakpoint()
+	panic(reason)
+}
+
+func FailBadSyntaxKind(node interface{ KindString() string }, message ...any) {
+	var msg string
+	if len(message) == 0 {
+		msg = "Unexpected node."
+	} else {
+		msg = fmt.Sprint(message...)
+	}
+	Fail(fmt.Sprintf("%s\nNode %s was unexpected.", msg, node.KindString()))
+}
+
+func AssertNever(member any, message ...any) {
+	var msg string
+	if len(message) == 0 {
+		msg = "Illegal value:"
+	} else {
+		msg = fmt.Sprint(message...)
+	}
+	var detail string
+	if m, ok := member.(interface{ KindString() string }); ok {
+		detail = m.KindString()
+	} else if m, ok := member.(fmt.Stringer); ok {
+		detail = m.String()
+	} else {
+		detail = fmt.Sprintf("%v", member)
+	}
+	Fail(fmt.Sprintf("%s %s", msg, detail))
+}
+
+func Assert(value bool, message ...any) {
+	if value {
+		return
+	}
+	assertSlow(message...)
+}
+
+func assertSlow(message ...any) {
+	// See https://dave.cheney.net/2020/05/02/mid-stack-inlining-in-go
+	var msg string
+	if len(message) > 0 {
+		msg = "False expression: " + fmt.Sprint(message...)
+	} else {
+		msg = "False expression."
+	}
+	Fail(msg)
+}