initial checkin of SkSL compiler

src/sksl/ast/SkSLASTVarDeclarationStatement.h

+/*
+ * 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_ASTVARDECLARATIONSTATEMENT
+#define SKSL_ASTVARDECLARATIONSTATEMENT
+
+#include "SkSLASTStatement.h"
+#include "SkSLASTVarDeclaration.h"
+
+namespace SkSL {
+
+/**
+ * A variable declaration appearing as a statement within a function.

[dogben, 2016/06/20 16:23:19]

Maybe it doesn't matter, but is the final semicolon part of ASTVarDeclaration or
part of ASTVarDeclarationStatement?

[ethannicholas, 2016/06/20 17:45:49]

Should have been part of ASTVarDeclarationStatement. All of the description()
functions are only used for debugging purposes, so I wasn't as careful with them
as I should have been. Fixed.

+ */
+struct ASTVarDeclarationStatement : public ASTStatement {
+    ASTVarDeclarationStatement(std::unique_ptr<ASTVarDeclaration> decl)
+    : INHERITED(decl->fPosition, kVarDeclaration_Kind)
+    , fDeclaration(std::move(decl)) {}
+
+    std::string description() const override {
+        return fDeclaration->description();
+    }
+
+    std::unique_ptr<ASTVarDeclaration> fDeclaration;
+
+    typedef ASTStatement INHERITED;
+};
+
+} // namespace
+
+#endif