initial checkin of SkSL compiler

src/sksl/ir/SkSLSymbolTable.cpp

+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+ #include "SkSLSymbolTable.h"
+
+namespace SkSL {
+
+std::vector<std::shared_ptr<FunctionDeclaration>> get_functions(std::shared_ptr<Symbol> s) {
+    std::vector<std::shared_ptr<FunctionDeclaration>> result;
+    switch (s->fKind) {
+        case Symbol::kFunctionDeclaration_Kind:
+            result.push_back(std::static_pointer_cast<FunctionDeclaration>(s));

[dogben, 2016/06/21 21:52:50]

nit: return {std::static_pointer_cast<FunctionDeclaration>(s)};

+            break;
+        case Symbol::kUnresolvedFunction_Kind:
+            for (auto f : std::static_pointer_cast<UnresolvedFunction>(s)->fFunctions) {

[dogben, 2016/06/21 21:52:50]

nit: return std::static_pointer_cast<UnresolvedFunction>(s)->fFunctions;

+                result.push_back(f);
+            }
+            break;
+        default:
+            break;
+    }
+    return result;
+}
+
+} // namespace