initial checkin of SkSL compiler
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1984363002
CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-x86_64-Release-CMake-Trybot,Build-Mac-Clang-x86_64-Release-CMake-Trybot
Review-Url: https://codereview.chromium.org/1984363002
diff --git a/src/sksl/SkSLUtil.h b/src/sksl/SkSLUtil.h
new file mode 100644
index 0000000..5536d93
--- /dev/null
+++ b/src/sksl/SkSLUtil.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SKSL_UTIL
+#define SKSL_UTIL
+
+#include <string>
+#include <sstream>
+#include "stdlib.h"
+#include "assert.h"
+#include "SkTypes.h"
+
+namespace SkSL {
+
+// our own definitions of certain std:: functions, because they are not always present on Android
+
+template <typename T> std::string to_string(T value) {
+#ifdef SK_BUILD_FOR_ANDROID
+ std::stringstream buffer;
+ buffer << value;
+ return buffer.str();
+#else
+ return std::to_string(value);
+#endif
+}
+
+#if _MSC_VER
+#define NORETURN __declspec(noreturn)
+#else
+#define NORETURN __attribute__((__noreturn__))
+#endif
+int stoi(std::string s);
+
+double stod(std::string s);
+
+long stol(std::string s);
+
+NORETURN void sksl_abort();
+
+} // namespace
+
+#ifdef DEBUG
+#define ASSERT(x) assert(x)
+#define ASSERT_RESULT(x) ASSERT(x);
+#else
+#define ASSERT(x)
+#define ASSERT_RESULT(x) x
+#endif
+
+#ifdef SKIA
+#define ABORT(...) { SkDebugf(__VA_ARGS__); sksl_abort(); }
+#else
+#define ABORT(...) { sksl_abort(); }
+#endif
+
+#endif