1 files changed, 59 insertions, 0 deletions
diff --git a/gfx/skia/skia/include/private/SkSLString.h b/gfx/skia/skia/include/private/SkSLString.h
new file mode 100644
index 0000000000..f8f3768ca8
--- /dev/null
+++ b/gfx/skia/skia/include/private/SkSLString.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SKSL_STRING
+#define SKSL_STRING
+
+#include "include/core/SkTypes.h"
+#include "include/private/SkSLDefines.h"
+
+#include <stdarg.h>
+#include <string>
+#include <string_view>
+
+namespace SkSL {
+
+bool stod(std::string_view s, SKSL_FLOAT* value);
+bool stoi(std::string_view s, SKSL_INT* value);
+
+namespace String {
+
+std::string printf(const char* fmt, ...) SK_PRINTF_LIKE(1, 2);
+void appendf(std::string* str, const char* fmt, ...) SK_PRINTF_LIKE(2, 3);
+void vappendf(std::string* str, const char* fmt, va_list va) SK_PRINTF_LIKE(2, 0);
+
+inline auto Separator() {
+    // This returns a lambda which emits "" the first time it is called, and ", " every subsequent
+    // time it is called.
+    struct Output {
+        const std::string fSpace, fComma;
+    };
+    static const Output* kOutput = new Output{{}, {", "}};
+
+    return [firstSeparator = true]() mutable -> const std::string& {
+        if (firstSeparator) {
+            firstSeparator = false;
+            return kOutput->fSpace;
+        } else {
+            return kOutput->fComma;
+        }
+    };
+}
+
+}  // namespace String
+}  // namespace SkSL
+
+namespace skstd {
+
+// We use a custom to_string(float|double) which ignores locale settings and writes `1.0` instead
+// of `1.00000`.
+std::string to_string(float value);
+std::string to_string(double value);
+
+}  // namespace skstd
+
+#endif