vendor tsgo

tools/tsgo/internal/sourcemap/lineinfo.go

@@ -0,0 +1,30 @@
+package sourcemap
+
+import "github.com/microsoft/typescript-go/internal/core"
+
+type ECMALineInfo struct {
+	text       string
+	lineStarts core.ECMALineStarts
+}
+
+func CreateECMALineInfo(text string, lineStarts core.ECMALineStarts) *ECMALineInfo {
+	return &ECMALineInfo{
+		text:       text,
+		lineStarts: lineStarts,
+	}
+}
+
+func (li *ECMALineInfo) LineCount() int {
+	return len(li.lineStarts)
+}
+
+func (li *ECMALineInfo) LineText(line int) string {
+	pos := li.lineStarts[line]
+	var end core.TextPos
+	if line+1 < len(li.lineStarts) {
+		end = li.lineStarts[line+1]
+	} else {
+		end = core.TextPos(len(li.text))
+	}
+	return li.text[pos:end]
+}