initial checkin of SkSL compiler

src/sksl/ir/SkSLSymbolTable.cpp

Index: src/sksl/ir/SkSLSymbolTable.cpp
diff --git a/src/sksl/ir/SkSLSymbolTable.cpp b/src/sksl/ir/SkSLSymbolTable.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..3c4de60a31a923f1a1743eaaf3deb7575434ecd1
--- /dev/null
+++ b/src/sksl/ir/SkSLSymbolTable.cpp
@@ -0,0 +1,29 @@
+/*
+ * 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));
+            break;
+        case Symbol::kUnresolvedFunction_Kind:
+            for (auto f : std::static_pointer_cast<UnresolvedFunction>(s)->fFunctions) {
+                result.push_back(f);
+            }
+            break;
+        default:
+            break;
+    }
+    return result;
+}
+
+} // namespace