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Diffstat (limited to 'deps/v8/src/code.h')
-rw-r--r-- | deps/v8/src/code.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/deps/v8/src/code.h b/deps/v8/src/code.h new file mode 100644 index 0000000000..87e0794904 --- /dev/null +++ b/deps/v8/src/code.h @@ -0,0 +1,67 @@ +// Copyright 2006-2008 the V8 project authors. All rights reserved. +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following +// disclaimer in the documentation and/or other materials provided +// with the distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#ifndef V8_CODE_H_ +#define V8_CODE_H_ + +namespace v8 { namespace internal { + + +// Wrapper class for passing expected and actual parameter counts as +// either registers or immediate values. Used to make sure that the +// caller provides exactly the expected number of parameters to the +// callee. +class ParameterCount BASE_EMBEDDED { + public: + explicit ParameterCount(Register reg) + : reg_(reg), immediate_(0) { } + explicit ParameterCount(int immediate) + : reg_(no_reg), immediate_(immediate) { } + + bool is_reg() const { return !reg_.is(no_reg); } + bool is_immediate() const { return !is_reg(); } + + Register reg() const { + ASSERT(is_reg()); + return reg_; + } + int immediate() const { + ASSERT(is_immediate()); + return immediate_; + } + + private: + const Register reg_; + const int immediate_; + + DISALLOW_IMPLICIT_CONSTRUCTORS(ParameterCount); +}; + + +} } // namespace v8::internal + +#endif // V8_CODE_H_ |