Add IgnorePosLine and deprecate IgnoreLine

comment.go

@@ -109,6 +109,7 @@ func (maps Maps) CommentsByPosLine(fset *token.FileSet, pos token.Pos) []*ast.Co
 	return nil
 }
 
+// Deprecated: This function does not work with multiple files.
 // IgnoreLine checks either specified lineof AST node is ignored by the check.
 // It follows staticcheck style as the below.
 //   //lint:ignore Check1[,Check2,...,CheckN] reason
@@ -121,6 +122,18 @@ func (maps Maps) IgnoreLine(fset *token.FileSet, line int, check string) bool {
 	return false
 }
 
+// IgnorePosLine checks either specified lineof AST node is ignored by the check.
+// It follows staticcheck style as the below.
+//   //lint:ignore Check1[,Check2,...,CheckN] reason
+func (maps Maps) IgnorePosLine(fset *token.FileSet, pos token.Pos, check string) bool {
+	for _, cg := range maps.CommentsByPosLine(fset, pos) {
+		if hasIgnoreCheck(cg, check) {
+			return true
+		}
+	}
+	return false
+}
+
 // hasIgnoreCheck returns true if the provided CommentGroup starts with a comment
 // of the form "//lint:ignore Check1[,Check2,...,CheckN] reason" and one of the
 // checks matches the provided check.

comment_test.go

@@ -66,3 +66,31 @@ func TestMaps_IgnoreLine(t *testing.T) {
 		})
 	}
 }
+
+func TestMaps_IgnorePosLine(t *testing.T) {
+	t.Parallel()
+
+	cases := map[string]struct {
+		path  string
+		check string
+		want  bool
+	}{
+		"single": {"testdata/Maps_IgnorePosLine/single.go", "test-check", true},
+		"multi":  {"testdata/Maps_IgnorePosLine/multi.go", "test-check", true},
+	}
+
+	for n, tt := range cases {
+		tt := tt
+		t.Run(n, func(t *testing.T) {
+			t.Parallel()
+			fset := token.NewFileSet()
+			ms := maps(t, fset, tt.path)
+			p := pos(t, fset, tt.path)
+
+			got := ms.IgnorePosLine(fset, p, tt.check)
+			if tt.want != got {
+				t.Errorf("want %v, got %v", tt.want, got)
+			}
+		})
+	}
+}

testdata/Maps_IgnorePosLine/multi.go

@@ -0,0 +1,10 @@
+-- a.go --
+package a
+
+func A() {}
+-- b.go --
+package a
+
+//lint:ignore test-check reason
+func B_() {
+}

testdata/Maps_IgnorePosLine/single.go

@@ -0,0 +1,7 @@
+-- a.go --
+package a
+
+//lint:ignore test-check reason
+func A_() {}
+
+func B() {}