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Unified Diff: sandbox/linux/bpf_dsl/bpf_dsl_impl.h

Issue 670183003: Update from chromium 62675d9fb31fb8cedc40f68e78e8445a74f362e7 (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 6 years, 2 months ago
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Index: sandbox/linux/bpf_dsl/bpf_dsl_impl.h
diff --git a/sandbox/linux/bpf_dsl/bpf_dsl_impl.h b/sandbox/linux/bpf_dsl/bpf_dsl_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..48b91692b66272197bbc69f8702b6cd4b0d41a42
--- /dev/null
+++ b/sandbox/linux/bpf_dsl/bpf_dsl_impl.h
@@ -0,0 +1,63 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SANDBOX_LINUX_BPF_DSL_BPF_DSL_IMPL_H_
+#define SANDBOX_LINUX_BPF_DSL_BPF_DSL_IMPL_H_
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "sandbox/sandbox_export.h"
+
+namespace sandbox {
+class ErrorCode;
+
+namespace bpf_dsl {
+class PolicyCompiler;
+
+namespace internal {
+
+// Internal interface implemented by BoolExpr implementations.
+class BoolExprImpl : public base::RefCounted<BoolExprImpl> {
+ public:
+ // Compile uses |pc| to construct an ErrorCode that conditionally continues
+ // to either |true_ec| or |false_ec|, depending on whether the represented
+ // boolean expression is true or false.
+ virtual ErrorCode Compile(PolicyCompiler* pc,
+ ErrorCode true_ec,
+ ErrorCode false_ec) const = 0;
+
+ protected:
+ BoolExprImpl() {}
+ virtual ~BoolExprImpl() {}
+
+ private:
+ friend class base::RefCounted<BoolExprImpl>;
+ DISALLOW_COPY_AND_ASSIGN(BoolExprImpl);
+};
+
+// Internal interface implemented by ResultExpr implementations.
+class ResultExprImpl : public base::RefCounted<ResultExprImpl> {
+ public:
+ // Compile uses |pc| to construct an ErrorCode analogous to the represented
+ // result expression.
+ virtual ErrorCode Compile(PolicyCompiler* pc) const = 0;
+
+ // HasUnsafeTraps returns whether the result expression is or recursively
+ // contains an unsafe trap expression.
+ virtual bool HasUnsafeTraps() const;
+
+ protected:
+ ResultExprImpl() {}
+ virtual ~ResultExprImpl() {}
+
+ private:
+ friend class base::RefCounted<ResultExprImpl>;
+ DISALLOW_COPY_AND_ASSIGN(ResultExprImpl);
+};
+
+} // namespace internal
+} // namespace bpf_dsl
+} // namespace sandbox
+
+#endif // SANDBOX_LINUX_BPF_DSL_BPF_DSL_IMPL_H_
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