Use pump to generate source files.
This commit is contained in:
Cheng Zhao
Родитель
cbb5004ff9
Коммит
5d6921ff2a
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@ -1,3 +1,7 @@
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// This file was GENERATED by command:
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// pump.py constructor.h.pump
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// DO NOT EDIT BY HAND!!!
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// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE.chromium file.
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@ -30,7 +34,7 @@ inline Wrappable* InvokeFactory(
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Arguments* args,
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const base::Callback<Wrappable*(P1)>& callback) {
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typename CallbackParamTraits<P1>::LocalType a1;
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if (!GetNextArgument(args, 0, false, &a1))
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if (!GetNextArgument(args, 0, true, &a1))
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return NULL;
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return callback.Run(a1);
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};
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@ -0,0 +1,124 @@
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$$ This is a pump file for generating file templates. Pump is a python
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$$ script that is part of the Google Test suite of utilities. Description
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$$ can be found here:
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$$
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$$ http://code.google.com/p/googletest/wiki/PumpManual
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$$
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$var MAX_ARITY = 6
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// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE.chromium file.
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#ifndef NATIVE_MATE_WRAPPABLE_CLASS_H_
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#define NATIVE_MATE_WRAPPABLE_CLASS_H_
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#include "base/bind.h"
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#include "base/compiler_specific.h"
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#include "native_mate/wrappable.h"
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#include "native_mate/function_template.h"
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namespace mate {
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class Wrappable;
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namespace internal {
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// This set of templates invokes a base::Callback by converting the Arguments
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// into native types. It relies on the function_template.h to provide helper
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// templates.
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$range ARITY 0..MAX_ARITY
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$for ARITY [[
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$range ARG 1..ARITY
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$if ARITY == 0 [[
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]] $else [[
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template<$for ARG , [[typename P$(ARG)]]>
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]]
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inline Wrappable* InvokeFactory(
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Arguments* args,
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const base::Callback<Wrappable*($for ARG , [[P$(ARG)]])>& callback) {
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$if ARITY != 0 [[
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$for ARG [[ typename CallbackParamTraits<P$(ARG)>::LocalType a$(ARG);
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]]
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if ($for ARG ||
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[[!GetNextArgument(args, 0, $if ARG == 1 [[true]] $else [[false]], &a$(ARG))]])
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return NULL;
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]]
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return callback.Run($for ARG , [[a$(ARG)]]);
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};
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]]
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} // namespace internal
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template<typename Sig>
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class Constructor {
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public:
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typedef base::Callback<Sig> WrappableFactoryFunction;
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Constructor(const base::StringPiece& name) : name_(name) {}
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virtual ~Constructor() {
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MATE_PERSISTENT_RESET(constructor_);
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}
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v8::Handle<v8::FunctionTemplate> GetFunctionTemplate(
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v8::Isolate* isolate, const WrappableFactoryFunction& factory) {
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if (constructor_.IsEmpty()) {
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v8::Local<v8::FunctionTemplate> constructor = CreateFunctionTemplate(
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isolate, base::Bind(&Constructor::New, factory));
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constructor->InstanceTemplate()->SetInternalFieldCount(1);
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constructor->SetClassName(StringToV8(isolate, name_));
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MATE_PERSISTENT_ASSIGN(v8::FunctionTemplate, isolate, constructor_,
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constructor);
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}
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return MATE_PERSISTENT_TO_LOCAL(
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v8::FunctionTemplate, isolate, constructor_);
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}
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private:
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static MATE_METHOD_RETURN_TYPE New(const WrappableFactoryFunction& factory,
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v8::Isolate* isolate, Arguments* args) {
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Wrappable* object = internal::InvokeFactory(args, factory);
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if (object)
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object->Wrap(isolate, args->GetThis());
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else
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args->ThrowError();
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MATE_METHOD_RETURN_UNDEFINED();
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}
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base::StringPiece name_;
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v8::Persistent<v8::FunctionTemplate> constructor_;
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DISALLOW_COPY_AND_ASSIGN(Constructor);
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};
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template<typename T>
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Wrappable* NewOperatorFactory() {
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return new T;
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}
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template<typename T, typename Sig>
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v8::Local<v8::Function> CreateConstructor(
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v8::Isolate* isolate,
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const base::StringPiece& name,
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const base::Callback<Sig>& callback) {
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v8::Local<v8::FunctionTemplate> constructor =
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Constructor<Sig>(name).GetFunctionTemplate(isolate, callback);
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T::BuildPrototype(isolate, constructor->PrototypeTemplate());
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return constructor->GetFunction();
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}
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} // namespace mate
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#endif // NATIVE_MATE_WRAPPABLE_CLASS_H_
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@ -1,3 +1,7 @@
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// This file was GENERATED by command:
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// pump.py function_template.h.pump
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// DO NOT EDIT BY HAND!!!
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// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE.chromium file.
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@ -116,6 +120,21 @@ struct Invoker<void, P1, P2, P3, P4, P5, P6, P7> {
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}
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};
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template<typename R, typename P1, typename P2, typename P3, typename P4,
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typename P5, typename P6>
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struct Invoker<R, P1, P2, P3, P4, P5, P6, void> {
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inline static MATE_METHOD_RETURN_TYPE Go(
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Arguments& args,
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const base::Callback<R(P1, P2, P3, P4, P5, P6)>& callback,
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const P1& a1,
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const P2& a2,
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const P3& a3,
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const P4& a4,
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const P5& a5,
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const P6& a6) {
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MATE_METHOD_RETURN(callback.Run(a1, a2, a3, a4, a5, a6));
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}
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};
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template<typename P1, typename P2, typename P3, typename P4, typename P5,
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typename P6>
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struct Invoker<void, P1, P2, P3, P4, P5, P6, void> {
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@ -529,7 +548,6 @@ struct Dispatcher<R(P1, P2, P3, P4, P5, P6, P7)> {
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}
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};
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} // namespace internal
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@ -0,0 +1,225 @@
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$$ This is a pump file for generating file templates. Pump is a python
|
||||
$$ script that is part of the Google Test suite of utilities. Description
|
||||
$$ can be found here:
|
||||
$$
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$$ http://code.google.com/p/googletest/wiki/PumpManual
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$$
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$var MAX_ARITY = 7
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// Copyright 2013 The Chromium Authors. All rights reserved.
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||||
// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE.chromium file.
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||||
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#ifndef NATIVE_MATE_FUNCTION_TEMPLATE_H_
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#define NATIVE_MATE_FUNCTION_TEMPLATE_H_
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#include "base/callback.h"
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#include "base/logging.h"
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#include "native_mate/arguments.h"
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#include "native_mate/compat.h"
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#include "native_mate/converter.h"
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#include "v8/include/v8.h"
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namespace mate {
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class PerIsolateData;
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enum CreateFunctionTemplateFlags {
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HolderIsFirstArgument = 1 << 0,
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};
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namespace internal {
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template<typename T>
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struct CallbackParamTraits {
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typedef T LocalType;
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};
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template<typename T>
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struct CallbackParamTraits<const T&> {
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typedef T LocalType;
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};
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template<typename T>
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struct CallbackParamTraits<const T*> {
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typedef T* LocalType;
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};
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// CallbackHolder and CallbackHolderBase are used to pass a base::Callback from
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// CreateFunctionTemplate through v8 (via v8::FunctionTemplate) to
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// DispatchToCallback, where it is invoked.
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// This simple base class is used so that we can share a single object template
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// among every CallbackHolder instance.
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class CallbackHolderBase {
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public:
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v8::Handle<v8::External> GetHandle(v8::Isolate* isolate);
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protected:
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explicit CallbackHolderBase(v8::Isolate* isolate);
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virtual ~CallbackHolderBase();
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private:
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static MATE_WEAK_CALLBACK(WeakCallback, v8::External, CallbackHolderBase);
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v8::Persistent<v8::External> v8_ref_;
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DISALLOW_COPY_AND_ASSIGN(CallbackHolderBase);
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};
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template<typename Sig>
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class CallbackHolder : public CallbackHolderBase {
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public:
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CallbackHolder(v8::Isolate* isolate,
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const base::Callback<Sig>& callback,
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int flags)
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: CallbackHolderBase(isolate), callback(callback), flags(flags) {}
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base::Callback<Sig> callback;
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int flags;
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private:
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virtual ~CallbackHolder() {}
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DISALLOW_COPY_AND_ASSIGN(CallbackHolder);
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};
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// This set of templates invokes a base::Callback, converts the return type to a
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// JavaScript value, and returns that value to script via the provided
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// mate::Arguments object.
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//
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// In C++, you can declare the function foo(void), but you can't pass a void
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// expression to foo. As a result, we must specialize the case of Callbacks that
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// have the void return type.
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$range ARITY 0..MAX_ARITY
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$for ARITY [[
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$var INV_ARITY = MAX_ARITY - ARITY
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$range ARG 1..INV_ARITY
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$range VOID INV_ARITY+1..MAX_ARITY
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$if ARITY == 0 [[
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template<typename R$for ARG [[, typename P$(ARG) = void]]>
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struct Invoker {
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]] $else [[
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template<typename R$for ARG [[, typename P$(ARG)]]>
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||||
struct Invoker<R$for ARG [[, P$(ARG)]]$for VOID [[, void]]> {
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]]
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inline static MATE_METHOD_RETURN_TYPE Go(
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Arguments& args,
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const base::Callback<R($for ARG , [[P$(ARG)]])>& callback$for ARG [[,
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const P$(ARG)& a$(ARG)]]) {
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MATE_METHOD_RETURN(callback.Run($for ARG, [[a$(ARG)]]));
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||||
}
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||||
};
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template<$for ARG , [[typename P$(ARG)]]>
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struct Invoker<void$for ARG [[, P$(ARG)]]$for VOID [[, void]]> {
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inline static MATE_METHOD_RETURN_TYPE Go(
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Arguments& args,
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const base::Callback<void($for ARG , [[P$(ARG)]])>& callback$for ARG [[,
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const P$(ARG)& a$(ARG)]]) {
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callback.Run($for ARG, [[a$(ARG)]]);
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MATE_METHOD_RETURN_UNDEFINED();
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}
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};
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]]
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template<typename T>
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bool GetNextArgument(Arguments* args, int create_flags, bool is_first,
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T* result) {
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if (is_first && (create_flags & HolderIsFirstArgument) != 0) {
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return args->GetHolder(result);
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} else {
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return args->GetNext(result);
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}
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}
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// For advanced use cases, we allow callers to request the unparsed Arguments
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// object and poke around in it directly.
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inline bool GetNextArgument(Arguments* args, int create_flags, bool is_first,
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Arguments* result) {
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*result = *args;
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return true;
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||||
}
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inline bool GetNextArgument(Arguments* args, int create_flags, bool is_first,
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Arguments** result) {
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*result = args;
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return true;
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}
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// It's common for clients to just need the isolate, so we make that easy.
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inline bool GetNextArgument(Arguments* args, int create_flags,
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bool is_first, v8::Isolate** result) {
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*result = args->isolate();
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return true;
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}
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// DispatchToCallback converts all the JavaScript arguments to C++ types and
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// invokes the base::Callback.
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template<typename Sig>
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struct Dispatcher {
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};
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$range ARITY 0..MAX_ARITY
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$for ARITY [[
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$range ARG 1..ARITY
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template<typename R$for ARG [[, typename P$(ARG)]]>
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struct Dispatcher<R($for ARG , [[P$(ARG)]])> {
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static MATE_METHOD(DispatchToCallback) {
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Arguments args(info);
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v8::Handle<v8::External> v8_holder;
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CHECK(args.GetData(&v8_holder));
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CallbackHolderBase* holder_base = reinterpret_cast<CallbackHolderBase*>(
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v8_holder->Value());
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typedef CallbackHolder<R($for ARG , [[P$(ARG)]])> HolderT;
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HolderT* holder = static_cast<HolderT*>(holder_base);
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$if ARITY != 0 [[
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||||
|
||||
|
||||
$for ARG [[ typename CallbackParamTraits<P$(ARG)>::LocalType a$(ARG);
|
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|
||||
]]
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if ($for ARG ||
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[[!GetNextArgument(&args, holder->flags, $if ARG == 1 [[true]] $else [[false]], &a$(ARG))]]) {
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args.ThrowError();
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MATE_METHOD_RETURN_UNDEFINED();
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}
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||||
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]]
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|
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return Invoker<R$for ARG [[, P$(ARG)]]>::Go(args, holder->callback$for ARG [[, a$(ARG)]]);
|
||||
}
|
||||
};
|
||||
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||||
]]
|
||||
|
||||
} // namespace internal
|
||||
|
||||
|
||||
// CreateFunctionTemplate creates a v8::FunctionTemplate that will create
|
||||
// JavaScript functions that execute a provided C++ function or base::Callback.
|
||||
// JavaScript arguments are automatically converted via mate::Converter, as is
|
||||
// the return value of the C++ function, if any.
|
||||
template<typename Sig>
|
||||
v8::Local<v8::FunctionTemplate> CreateFunctionTemplate(
|
||||
v8::Isolate* isolate, const base::Callback<Sig> callback,
|
||||
int callback_flags = 0) {
|
||||
typedef internal::CallbackHolder<Sig> HolderT;
|
||||
HolderT* holder = new HolderT(isolate, callback, callback_flags);
|
||||
|
||||
return v8::FunctionTemplate::New(
|
||||
#if NODE_VERSION_AT_LEAST(0, 11, 11)
|
||||
isolate,
|
||||
#endif
|
||||
&internal::Dispatcher<Sig>::DispatchToCallback,
|
||||
ConvertToV8<v8::Handle<v8::External> >(isolate,
|
||||
holder->GetHandle(isolate)));
|
||||
}
|
||||
|
||||
} // namespace mate
|
||||
|
||||
#endif // NATIVE_MATE_FUNCTION_TEMPLATE_H_
|
||||
|
|
@ -0,0 +1,855 @@
|
|||
#!/usr/bin/env python
|
||||
#
|
||||
# Copyright 2008, Google Inc.
|
||||
# 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.
|
||||
|
||||
"""pump v0.2.0 - Pretty Useful for Meta Programming.
|
||||
|
||||
A tool for preprocessor meta programming. Useful for generating
|
||||
repetitive boilerplate code. Especially useful for writing C++
|
||||
classes, functions, macros, and templates that need to work with
|
||||
various number of arguments.
|
||||
|
||||
USAGE:
|
||||
pump.py SOURCE_FILE
|
||||
|
||||
EXAMPLES:
|
||||
pump.py foo.cc.pump
|
||||
Converts foo.cc.pump to foo.cc.
|
||||
|
||||
GRAMMAR:
|
||||
CODE ::= ATOMIC_CODE*
|
||||
ATOMIC_CODE ::= $var ID = EXPRESSION
|
||||
| $var ID = [[ CODE ]]
|
||||
| $range ID EXPRESSION..EXPRESSION
|
||||
| $for ID SEPARATOR [[ CODE ]]
|
||||
| $($)
|
||||
| $ID
|
||||
| $(EXPRESSION)
|
||||
| $if EXPRESSION [[ CODE ]] ELSE_BRANCH
|
||||
| [[ CODE ]]
|
||||
| RAW_CODE
|
||||
SEPARATOR ::= RAW_CODE | EMPTY
|
||||
ELSE_BRANCH ::= $else [[ CODE ]]
|
||||
| $elif EXPRESSION [[ CODE ]] ELSE_BRANCH
|
||||
| EMPTY
|
||||
EXPRESSION has Python syntax.
|
||||
"""
|
||||
|
||||
__author__ = 'wan@google.com (Zhanyong Wan)'
|
||||
|
||||
import os
|
||||
import re
|
||||
import sys
|
||||
|
||||
|
||||
TOKEN_TABLE = [
|
||||
(re.compile(r'\$var\s+'), '$var'),
|
||||
(re.compile(r'\$elif\s+'), '$elif'),
|
||||
(re.compile(r'\$else\s+'), '$else'),
|
||||
(re.compile(r'\$for\s+'), '$for'),
|
||||
(re.compile(r'\$if\s+'), '$if'),
|
||||
(re.compile(r'\$range\s+'), '$range'),
|
||||
(re.compile(r'\$[_A-Za-z]\w*'), '$id'),
|
||||
(re.compile(r'\$\(\$\)'), '$($)'),
|
||||
(re.compile(r'\$'), '$'),
|
||||
(re.compile(r'\[\[\n?'), '[['),
|
||||
(re.compile(r'\]\]\n?'), ']]'),
|
||||
]
|
||||
|
||||
|
||||
class Cursor:
|
||||
"""Represents a position (line and column) in a text file."""
|
||||
|
||||
def __init__(self, line=-1, column=-1):
|
||||
self.line = line
|
||||
self.column = column
|
||||
|
||||
def __eq__(self, rhs):
|
||||
return self.line == rhs.line and self.column == rhs.column
|
||||
|
||||
def __ne__(self, rhs):
|
||||
return not self == rhs
|
||||
|
||||
def __lt__(self, rhs):
|
||||
return self.line < rhs.line or (
|
||||
self.line == rhs.line and self.column < rhs.column)
|
||||
|
||||
def __le__(self, rhs):
|
||||
return self < rhs or self == rhs
|
||||
|
||||
def __gt__(self, rhs):
|
||||
return rhs < self
|
||||
|
||||
def __ge__(self, rhs):
|
||||
return rhs <= self
|
||||
|
||||
def __str__(self):
|
||||
if self == Eof():
|
||||
return 'EOF'
|
||||
else:
|
||||
return '%s(%s)' % (self.line + 1, self.column)
|
||||
|
||||
def __add__(self, offset):
|
||||
return Cursor(self.line, self.column + offset)
|
||||
|
||||
def __sub__(self, offset):
|
||||
return Cursor(self.line, self.column - offset)
|
||||
|
||||
def Clone(self):
|
||||
"""Returns a copy of self."""
|
||||
|
||||
return Cursor(self.line, self.column)
|
||||
|
||||
|
||||
# Special cursor to indicate the end-of-file.
|
||||
def Eof():
|
||||
"""Returns the special cursor to denote the end-of-file."""
|
||||
return Cursor(-1, -1)
|
||||
|
||||
|
||||
class Token:
|
||||
"""Represents a token in a Pump source file."""
|
||||
|
||||
def __init__(self, start=None, end=None, value=None, token_type=None):
|
||||
if start is None:
|
||||
self.start = Eof()
|
||||
else:
|
||||
self.start = start
|
||||
if end is None:
|
||||
self.end = Eof()
|
||||
else:
|
||||
self.end = end
|
||||
self.value = value
|
||||
self.token_type = token_type
|
||||
|
||||
def __str__(self):
|
||||
return 'Token @%s: \'%s\' type=%s' % (
|
||||
self.start, self.value, self.token_type)
|
||||
|
||||
def Clone(self):
|
||||
"""Returns a copy of self."""
|
||||
|
||||
return Token(self.start.Clone(), self.end.Clone(), self.value,
|
||||
self.token_type)
|
||||
|
||||
|
||||
def StartsWith(lines, pos, string):
|
||||
"""Returns True iff the given position in lines starts with 'string'."""
|
||||
|
||||
return lines[pos.line][pos.column:].startswith(string)
|
||||
|
||||
|
||||
def FindFirstInLine(line, token_table):
|
||||
best_match_start = -1
|
||||
for (regex, token_type) in token_table:
|
||||
m = regex.search(line)
|
||||
if m:
|
||||
# We found regex in lines
|
||||
if best_match_start < 0 or m.start() < best_match_start:
|
||||
best_match_start = m.start()
|
||||
best_match_length = m.end() - m.start()
|
||||
best_match_token_type = token_type
|
||||
|
||||
if best_match_start < 0:
|
||||
return None
|
||||
|
||||
return (best_match_start, best_match_length, best_match_token_type)
|
||||
|
||||
|
||||
def FindFirst(lines, token_table, cursor):
|
||||
"""Finds the first occurrence of any string in strings in lines."""
|
||||
|
||||
start = cursor.Clone()
|
||||
cur_line_number = cursor.line
|
||||
for line in lines[start.line:]:
|
||||
if cur_line_number == start.line:
|
||||
line = line[start.column:]
|
||||
m = FindFirstInLine(line, token_table)
|
||||
if m:
|
||||
# We found a regex in line.
|
||||
(start_column, length, token_type) = m
|
||||
if cur_line_number == start.line:
|
||||
start_column += start.column
|
||||
found_start = Cursor(cur_line_number, start_column)
|
||||
found_end = found_start + length
|
||||
return MakeToken(lines, found_start, found_end, token_type)
|
||||
cur_line_number += 1
|
||||
# We failed to find str in lines
|
||||
return None
|
||||
|
||||
|
||||
def SubString(lines, start, end):
|
||||
"""Returns a substring in lines."""
|
||||
|
||||
if end == Eof():
|
||||
end = Cursor(len(lines) - 1, len(lines[-1]))
|
||||
|
||||
if start >= end:
|
||||
return ''
|
||||
|
||||
if start.line == end.line:
|
||||
return lines[start.line][start.column:end.column]
|
||||
|
||||
result_lines = ([lines[start.line][start.column:]] +
|
||||
lines[start.line + 1:end.line] +
|
||||
[lines[end.line][:end.column]])
|
||||
return ''.join(result_lines)
|
||||
|
||||
|
||||
def StripMetaComments(str):
|
||||
"""Strip meta comments from each line in the given string."""
|
||||
|
||||
# First, completely remove lines containing nothing but a meta
|
||||
# comment, including the trailing \n.
|
||||
str = re.sub(r'^\s*\$\$.*\n', '', str)
|
||||
|
||||
# Then, remove meta comments from contentful lines.
|
||||
return re.sub(r'\s*\$\$.*', '', str)
|
||||
|
||||
|
||||
def MakeToken(lines, start, end, token_type):
|
||||
"""Creates a new instance of Token."""
|
||||
|
||||
return Token(start, end, SubString(lines, start, end), token_type)
|
||||
|
||||
|
||||
def ParseToken(lines, pos, regex, token_type):
|
||||
line = lines[pos.line][pos.column:]
|
||||
m = regex.search(line)
|
||||
if m and not m.start():
|
||||
return MakeToken(lines, pos, pos + m.end(), token_type)
|
||||
else:
|
||||
print 'ERROR: %s expected at %s.' % (token_type, pos)
|
||||
sys.exit(1)
|
||||
|
||||
|
||||
ID_REGEX = re.compile(r'[_A-Za-z]\w*')
|
||||
EQ_REGEX = re.compile(r'=')
|
||||
REST_OF_LINE_REGEX = re.compile(r'.*?(?=$|\$\$)')
|
||||
OPTIONAL_WHITE_SPACES_REGEX = re.compile(r'\s*')
|
||||
WHITE_SPACE_REGEX = re.compile(r'\s')
|
||||
DOT_DOT_REGEX = re.compile(r'\.\.')
|
||||
|
||||
|
||||
def Skip(lines, pos, regex):
|
||||
line = lines[pos.line][pos.column:]
|
||||
m = re.search(regex, line)
|
||||
if m and not m.start():
|
||||
return pos + m.end()
|
||||
else:
|
||||
return pos
|
||||
|
||||
|
||||
def SkipUntil(lines, pos, regex, token_type):
|
||||
line = lines[pos.line][pos.column:]
|
||||
m = re.search(regex, line)
|
||||
if m:
|
||||
return pos + m.start()
|
||||
else:
|
||||
print ('ERROR: %s expected on line %s after column %s.' %
|
||||
(token_type, pos.line + 1, pos.column))
|
||||
sys.exit(1)
|
||||
|
||||
|
||||
def ParseExpTokenInParens(lines, pos):
|
||||
def ParseInParens(pos):
|
||||
pos = Skip(lines, pos, OPTIONAL_WHITE_SPACES_REGEX)
|
||||
pos = Skip(lines, pos, r'\(')
|
||||
pos = Parse(pos)
|
||||
pos = Skip(lines, pos, r'\)')
|
||||
return pos
|
||||
|
||||
def Parse(pos):
|
||||
pos = SkipUntil(lines, pos, r'\(|\)', ')')
|
||||
if SubString(lines, pos, pos + 1) == '(':
|
||||
pos = Parse(pos + 1)
|
||||
pos = Skip(lines, pos, r'\)')
|
||||
return Parse(pos)
|
||||
else:
|
||||
return pos
|
||||
|
||||
start = pos.Clone()
|
||||
pos = ParseInParens(pos)
|
||||
return MakeToken(lines, start, pos, 'exp')
|
||||
|
||||
|
||||
def RStripNewLineFromToken(token):
|
||||
if token.value.endswith('\n'):
|
||||
return Token(token.start, token.end, token.value[:-1], token.token_type)
|
||||
else:
|
||||
return token
|
||||
|
||||
|
||||
def TokenizeLines(lines, pos):
|
||||
while True:
|
||||
found = FindFirst(lines, TOKEN_TABLE, pos)
|
||||
if not found:
|
||||
yield MakeToken(lines, pos, Eof(), 'code')
|
||||
return
|
||||
|
||||
if found.start == pos:
|
||||
prev_token = None
|
||||
prev_token_rstripped = None
|
||||
else:
|
||||
prev_token = MakeToken(lines, pos, found.start, 'code')
|
||||
prev_token_rstripped = RStripNewLineFromToken(prev_token)
|
||||
|
||||
if found.token_type == '$var':
|
||||
if prev_token_rstripped:
|
||||
yield prev_token_rstripped
|
||||
yield found
|
||||
id_token = ParseToken(lines, found.end, ID_REGEX, 'id')
|
||||
yield id_token
|
||||
pos = Skip(lines, id_token.end, OPTIONAL_WHITE_SPACES_REGEX)
|
||||
|
||||
eq_token = ParseToken(lines, pos, EQ_REGEX, '=')
|
||||
yield eq_token
|
||||
pos = Skip(lines, eq_token.end, r'\s*')
|
||||
|
||||
if SubString(lines, pos, pos + 2) != '[[':
|
||||
exp_token = ParseToken(lines, pos, REST_OF_LINE_REGEX, 'exp')
|
||||
yield exp_token
|
||||
pos = Cursor(exp_token.end.line + 1, 0)
|
||||
elif found.token_type == '$for':
|
||||
if prev_token_rstripped:
|
||||
yield prev_token_rstripped
|
||||
yield found
|
||||
id_token = ParseToken(lines, found.end, ID_REGEX, 'id')
|
||||
yield id_token
|
||||
pos = Skip(lines, id_token.end, WHITE_SPACE_REGEX)
|
||||
elif found.token_type == '$range':
|
||||
if prev_token_rstripped:
|
||||
yield prev_token_rstripped
|
||||
yield found
|
||||
id_token = ParseToken(lines, found.end, ID_REGEX, 'id')
|
||||
yield id_token
|
||||
pos = Skip(lines, id_token.end, OPTIONAL_WHITE_SPACES_REGEX)
|
||||
|
||||
dots_pos = SkipUntil(lines, pos, DOT_DOT_REGEX, '..')
|
||||
yield MakeToken(lines, pos, dots_pos, 'exp')
|
||||
yield MakeToken(lines, dots_pos, dots_pos + 2, '..')
|
||||
pos = dots_pos + 2
|
||||
new_pos = Cursor(pos.line + 1, 0)
|
||||
yield MakeToken(lines, pos, new_pos, 'exp')
|
||||
pos = new_pos
|
||||
elif found.token_type == '$':
|
||||
if prev_token:
|
||||
yield prev_token
|
||||
yield found
|
||||
exp_token = ParseExpTokenInParens(lines, found.end)
|
||||
yield exp_token
|
||||
pos = exp_token.end
|
||||
elif (found.token_type == ']]' or found.token_type == '$if' or
|
||||
found.token_type == '$elif' or found.token_type == '$else'):
|
||||
if prev_token_rstripped:
|
||||
yield prev_token_rstripped
|
||||
yield found
|
||||
pos = found.end
|
||||
else:
|
||||
if prev_token:
|
||||
yield prev_token
|
||||
yield found
|
||||
pos = found.end
|
||||
|
||||
|
||||
def Tokenize(s):
|
||||
"""A generator that yields the tokens in the given string."""
|
||||
if s != '':
|
||||
lines = s.splitlines(True)
|
||||
for token in TokenizeLines(lines, Cursor(0, 0)):
|
||||
yield token
|
||||
|
||||
|
||||
class CodeNode:
|
||||
def __init__(self, atomic_code_list=None):
|
||||
self.atomic_code = atomic_code_list
|
||||
|
||||
|
||||
class VarNode:
|
||||
def __init__(self, identifier=None, atomic_code=None):
|
||||
self.identifier = identifier
|
||||
self.atomic_code = atomic_code
|
||||
|
||||
|
||||
class RangeNode:
|
||||
def __init__(self, identifier=None, exp1=None, exp2=None):
|
||||
self.identifier = identifier
|
||||
self.exp1 = exp1
|
||||
self.exp2 = exp2
|
||||
|
||||
|
||||
class ForNode:
|
||||
def __init__(self, identifier=None, sep=None, code=None):
|
||||
self.identifier = identifier
|
||||
self.sep = sep
|
||||
self.code = code
|
||||
|
||||
|
||||
class ElseNode:
|
||||
def __init__(self, else_branch=None):
|
||||
self.else_branch = else_branch
|
||||
|
||||
|
||||
class IfNode:
|
||||
def __init__(self, exp=None, then_branch=None, else_branch=None):
|
||||
self.exp = exp
|
||||
self.then_branch = then_branch
|
||||
self.else_branch = else_branch
|
||||
|
||||
|
||||
class RawCodeNode:
|
||||
def __init__(self, token=None):
|
||||
self.raw_code = token
|
||||
|
||||
|
||||
class LiteralDollarNode:
|
||||
def __init__(self, token):
|
||||
self.token = token
|
||||
|
||||
|
||||
class ExpNode:
|
||||
def __init__(self, token, python_exp):
|
||||
self.token = token
|
||||
self.python_exp = python_exp
|
||||
|
||||
|
||||
def PopFront(a_list):
|
||||
head = a_list[0]
|
||||
a_list[:1] = []
|
||||
return head
|
||||
|
||||
|
||||
def PushFront(a_list, elem):
|
||||
a_list[:0] = [elem]
|
||||
|
||||
|
||||
def PopToken(a_list, token_type=None):
|
||||
token = PopFront(a_list)
|
||||
if token_type is not None and token.token_type != token_type:
|
||||
print 'ERROR: %s expected at %s' % (token_type, token.start)
|
||||
print 'ERROR: %s found instead' % (token,)
|
||||
sys.exit(1)
|
||||
|
||||
return token
|
||||
|
||||
|
||||
def PeekToken(a_list):
|
||||
if not a_list:
|
||||
return None
|
||||
|
||||
return a_list[0]
|
||||
|
||||
|
||||
def ParseExpNode(token):
|
||||
python_exp = re.sub(r'([_A-Za-z]\w*)', r'self.GetValue("\1")', token.value)
|
||||
return ExpNode(token, python_exp)
|
||||
|
||||
|
||||
def ParseElseNode(tokens):
|
||||
def Pop(token_type=None):
|
||||
return PopToken(tokens, token_type)
|
||||
|
||||
next = PeekToken(tokens)
|
||||
if not next:
|
||||
return None
|
||||
if next.token_type == '$else':
|
||||
Pop('$else')
|
||||
Pop('[[')
|
||||
code_node = ParseCodeNode(tokens)
|
||||
Pop(']]')
|
||||
return code_node
|
||||
elif next.token_type == '$elif':
|
||||
Pop('$elif')
|
||||
exp = Pop('code')
|
||||
Pop('[[')
|
||||
code_node = ParseCodeNode(tokens)
|
||||
Pop(']]')
|
||||
inner_else_node = ParseElseNode(tokens)
|
||||
return CodeNode([IfNode(ParseExpNode(exp), code_node, inner_else_node)])
|
||||
elif not next.value.strip():
|
||||
Pop('code')
|
||||
return ParseElseNode(tokens)
|
||||
else:
|
||||
return None
|
||||
|
||||
|
||||
def ParseAtomicCodeNode(tokens):
|
||||
def Pop(token_type=None):
|
||||
return PopToken(tokens, token_type)
|
||||
|
||||
head = PopFront(tokens)
|
||||
t = head.token_type
|
||||
if t == 'code':
|
||||
return RawCodeNode(head)
|
||||
elif t == '$var':
|
||||
id_token = Pop('id')
|
||||
Pop('=')
|
||||
next = PeekToken(tokens)
|
||||
if next.token_type == 'exp':
|
||||
exp_token = Pop()
|
||||
return VarNode(id_token, ParseExpNode(exp_token))
|
||||
Pop('[[')
|
||||
code_node = ParseCodeNode(tokens)
|
||||
Pop(']]')
|
||||
return VarNode(id_token, code_node)
|
||||
elif t == '$for':
|
||||
id_token = Pop('id')
|
||||
next_token = PeekToken(tokens)
|
||||
if next_token.token_type == 'code':
|
||||
sep_token = next_token
|
||||
Pop('code')
|
||||
else:
|
||||
sep_token = None
|
||||
Pop('[[')
|
||||
code_node = ParseCodeNode(tokens)
|
||||
Pop(']]')
|
||||
return ForNode(id_token, sep_token, code_node)
|
||||
elif t == '$if':
|
||||
exp_token = Pop('code')
|
||||
Pop('[[')
|
||||
code_node = ParseCodeNode(tokens)
|
||||
Pop(']]')
|
||||
else_node = ParseElseNode(tokens)
|
||||
return IfNode(ParseExpNode(exp_token), code_node, else_node)
|
||||
elif t == '$range':
|
||||
id_token = Pop('id')
|
||||
exp1_token = Pop('exp')
|
||||
Pop('..')
|
||||
exp2_token = Pop('exp')
|
||||
return RangeNode(id_token, ParseExpNode(exp1_token),
|
||||
ParseExpNode(exp2_token))
|
||||
elif t == '$id':
|
||||
return ParseExpNode(Token(head.start + 1, head.end, head.value[1:], 'id'))
|
||||
elif t == '$($)':
|
||||
return LiteralDollarNode(head)
|
||||
elif t == '$':
|
||||
exp_token = Pop('exp')
|
||||
return ParseExpNode(exp_token)
|
||||
elif t == '[[':
|
||||
code_node = ParseCodeNode(tokens)
|
||||
Pop(']]')
|
||||
return code_node
|
||||
else:
|
||||
PushFront(tokens, head)
|
||||
return None
|
||||
|
||||
|
||||
def ParseCodeNode(tokens):
|
||||
atomic_code_list = []
|
||||
while True:
|
||||
if not tokens:
|
||||
break
|
||||
atomic_code_node = ParseAtomicCodeNode(tokens)
|
||||
if atomic_code_node:
|
||||
atomic_code_list.append(atomic_code_node)
|
||||
else:
|
||||
break
|
||||
return CodeNode(atomic_code_list)
|
||||
|
||||
|
||||
def ParseToAST(pump_src_text):
|
||||
"""Convert the given Pump source text into an AST."""
|
||||
tokens = list(Tokenize(pump_src_text))
|
||||
code_node = ParseCodeNode(tokens)
|
||||
return code_node
|
||||
|
||||
|
||||
class Env:
|
||||
def __init__(self):
|
||||
self.variables = []
|
||||
self.ranges = []
|
||||
|
||||
def Clone(self):
|
||||
clone = Env()
|
||||
clone.variables = self.variables[:]
|
||||
clone.ranges = self.ranges[:]
|
||||
return clone
|
||||
|
||||
def PushVariable(self, var, value):
|
||||
# If value looks like an int, store it as an int.
|
||||
try:
|
||||
int_value = int(value)
|
||||
if ('%s' % int_value) == value:
|
||||
value = int_value
|
||||
except Exception:
|
||||
pass
|
||||
self.variables[:0] = [(var, value)]
|
||||
|
||||
def PopVariable(self):
|
||||
self.variables[:1] = []
|
||||
|
||||
def PushRange(self, var, lower, upper):
|
||||
self.ranges[:0] = [(var, lower, upper)]
|
||||
|
||||
def PopRange(self):
|
||||
self.ranges[:1] = []
|
||||
|
||||
def GetValue(self, identifier):
|
||||
for (var, value) in self.variables:
|
||||
if identifier == var:
|
||||
return value
|
||||
|
||||
print 'ERROR: meta variable %s is undefined.' % (identifier,)
|
||||
sys.exit(1)
|
||||
|
||||
def EvalExp(self, exp):
|
||||
try:
|
||||
result = eval(exp.python_exp)
|
||||
except Exception, e:
|
||||
print 'ERROR: caught exception %s: %s' % (e.__class__.__name__, e)
|
||||
print ('ERROR: failed to evaluate meta expression %s at %s' %
|
||||
(exp.python_exp, exp.token.start))
|
||||
sys.exit(1)
|
||||
return result
|
||||
|
||||
def GetRange(self, identifier):
|
||||
for (var, lower, upper) in self.ranges:
|
||||
if identifier == var:
|
||||
return (lower, upper)
|
||||
|
||||
print 'ERROR: range %s is undefined.' % (identifier,)
|
||||
sys.exit(1)
|
||||
|
||||
|
||||
class Output:
|
||||
def __init__(self):
|
||||
self.string = ''
|
||||
|
||||
def GetLastLine(self):
|
||||
index = self.string.rfind('\n')
|
||||
if index < 0:
|
||||
return ''
|
||||
|
||||
return self.string[index + 1:]
|
||||
|
||||
def Append(self, s):
|
||||
self.string += s
|
||||
|
||||
|
||||
def RunAtomicCode(env, node, output):
|
||||
if isinstance(node, VarNode):
|
||||
identifier = node.identifier.value.strip()
|
||||
result = Output()
|
||||
RunAtomicCode(env.Clone(), node.atomic_code, result)
|
||||
value = result.string
|
||||
env.PushVariable(identifier, value)
|
||||
elif isinstance(node, RangeNode):
|
||||
identifier = node.identifier.value.strip()
|
||||
lower = int(env.EvalExp(node.exp1))
|
||||
upper = int(env.EvalExp(node.exp2))
|
||||
env.PushRange(identifier, lower, upper)
|
||||
elif isinstance(node, ForNode):
|
||||
identifier = node.identifier.value.strip()
|
||||
if node.sep is None:
|
||||
sep = ''
|
||||
else:
|
||||
sep = node.sep.value
|
||||
(lower, upper) = env.GetRange(identifier)
|
||||
for i in range(lower, upper + 1):
|
||||
new_env = env.Clone()
|
||||
new_env.PushVariable(identifier, i)
|
||||
RunCode(new_env, node.code, output)
|
||||
if i != upper:
|
||||
output.Append(sep)
|
||||
elif isinstance(node, RawCodeNode):
|
||||
output.Append(node.raw_code.value)
|
||||
elif isinstance(node, IfNode):
|
||||
cond = env.EvalExp(node.exp)
|
||||
if cond:
|
||||
RunCode(env.Clone(), node.then_branch, output)
|
||||
elif node.else_branch is not None:
|
||||
RunCode(env.Clone(), node.else_branch, output)
|
||||
elif isinstance(node, ExpNode):
|
||||
value = env.EvalExp(node)
|
||||
output.Append('%s' % (value,))
|
||||
elif isinstance(node, LiteralDollarNode):
|
||||
output.Append('$')
|
||||
elif isinstance(node, CodeNode):
|
||||
RunCode(env.Clone(), node, output)
|
||||
else:
|
||||
print 'BAD'
|
||||
print node
|
||||
sys.exit(1)
|
||||
|
||||
|
||||
def RunCode(env, code_node, output):
|
||||
for atomic_code in code_node.atomic_code:
|
||||
RunAtomicCode(env, atomic_code, output)
|
||||
|
||||
|
||||
def IsSingleLineComment(cur_line):
|
||||
return '//' in cur_line
|
||||
|
||||
|
||||
def IsInPreprocessorDirective(prev_lines, cur_line):
|
||||
if cur_line.lstrip().startswith('#'):
|
||||
return True
|
||||
return prev_lines and prev_lines[-1].endswith('\\')
|
||||
|
||||
|
||||
def WrapComment(line, output):
|
||||
loc = line.find('//')
|
||||
before_comment = line[:loc].rstrip()
|
||||
if before_comment == '':
|
||||
indent = loc
|
||||
else:
|
||||
output.append(before_comment)
|
||||
indent = len(before_comment) - len(before_comment.lstrip())
|
||||
prefix = indent*' ' + '// '
|
||||
max_len = 80 - len(prefix)
|
||||
comment = line[loc + 2:].strip()
|
||||
segs = [seg for seg in re.split(r'(\w+\W*)', comment) if seg != '']
|
||||
cur_line = ''
|
||||
for seg in segs:
|
||||
if len((cur_line + seg).rstrip()) < max_len:
|
||||
cur_line += seg
|
||||
else:
|
||||
if cur_line.strip() != '':
|
||||
output.append(prefix + cur_line.rstrip())
|
||||
cur_line = seg.lstrip()
|
||||
if cur_line.strip() != '':
|
||||
output.append(prefix + cur_line.strip())
|
||||
|
||||
|
||||
def WrapCode(line, line_concat, output):
|
||||
indent = len(line) - len(line.lstrip())
|
||||
prefix = indent*' ' # Prefix of the current line
|
||||
max_len = 80 - indent - len(line_concat) # Maximum length of the current line
|
||||
new_prefix = prefix + 4*' ' # Prefix of a continuation line
|
||||
new_max_len = max_len - 4 # Maximum length of a continuation line
|
||||
# Prefers to wrap a line after a ',' or ';'.
|
||||
segs = [seg for seg in re.split(r'([^,;]+[,;]?)', line.strip()) if seg != '']
|
||||
cur_line = '' # The current line without leading spaces.
|
||||
for seg in segs:
|
||||
# If the line is still too long, wrap at a space.
|
||||
while cur_line == '' and len(seg.strip()) > max_len:
|
||||
seg = seg.lstrip()
|
||||
split_at = seg.rfind(' ', 0, max_len)
|
||||
output.append(prefix + seg[:split_at].strip() + line_concat)
|
||||
seg = seg[split_at + 1:]
|
||||
prefix = new_prefix
|
||||
max_len = new_max_len
|
||||
|
||||
if len((cur_line + seg).rstrip()) < max_len:
|
||||
cur_line = (cur_line + seg).lstrip()
|
||||
else:
|
||||
output.append(prefix + cur_line.rstrip() + line_concat)
|
||||
prefix = new_prefix
|
||||
max_len = new_max_len
|
||||
cur_line = seg.lstrip()
|
||||
if cur_line.strip() != '':
|
||||
output.append(prefix + cur_line.strip())
|
||||
|
||||
|
||||
def WrapPreprocessorDirective(line, output):
|
||||
WrapCode(line, ' \\', output)
|
||||
|
||||
|
||||
def WrapPlainCode(line, output):
|
||||
WrapCode(line, '', output)
|
||||
|
||||
|
||||
def IsMultiLineIWYUPragma(line):
|
||||
return re.search(r'/\* IWYU pragma: ', line)
|
||||
|
||||
|
||||
def IsHeaderGuardIncludeOrOneLineIWYUPragma(line):
|
||||
return (re.match(r'^#(ifndef|define|endif\s*//)\s*[\w_]+\s*$', line) or
|
||||
re.match(r'^#include\s', line) or
|
||||
# Don't break IWYU pragmas, either; that causes iwyu.py problems.
|
||||
re.search(r'// IWYU pragma: ', line))
|
||||
|
||||
|
||||
def WrapLongLine(line, output):
|
||||
line = line.rstrip()
|
||||
if len(line) <= 80:
|
||||
output.append(line)
|
||||
elif IsSingleLineComment(line):
|
||||
if IsHeaderGuardIncludeOrOneLineIWYUPragma(line):
|
||||
# The style guide made an exception to allow long header guard lines,
|
||||
# includes and IWYU pragmas.
|
||||
output.append(line)
|
||||
else:
|
||||
WrapComment(line, output)
|
||||
elif IsInPreprocessorDirective(output, line):
|
||||
if IsHeaderGuardIncludeOrOneLineIWYUPragma(line):
|
||||
# The style guide made an exception to allow long header guard lines,
|
||||
# includes and IWYU pragmas.
|
||||
output.append(line)
|
||||
else:
|
||||
WrapPreprocessorDirective(line, output)
|
||||
elif IsMultiLineIWYUPragma(line):
|
||||
output.append(line)
|
||||
else:
|
||||
WrapPlainCode(line, output)
|
||||
|
||||
|
||||
def BeautifyCode(string):
|
||||
lines = string.splitlines()
|
||||
output = []
|
||||
for line in lines:
|
||||
WrapLongLine(line, output)
|
||||
output2 = [line.rstrip() for line in output]
|
||||
return '\n'.join(output2) + '\n'
|
||||
|
||||
|
||||
def ConvertFromPumpSource(src_text):
|
||||
"""Return the text generated from the given Pump source text."""
|
||||
ast = ParseToAST(StripMetaComments(src_text))
|
||||
output = Output()
|
||||
RunCode(Env(), ast, output)
|
||||
return BeautifyCode(output.string)
|
||||
|
||||
|
||||
def main(argv):
|
||||
if len(argv) == 1:
|
||||
print __doc__
|
||||
sys.exit(1)
|
||||
|
||||
file_path = argv[-1]
|
||||
output_str = ConvertFromPumpSource(file(file_path, 'r').read())
|
||||
if file_path.endswith('.pump'):
|
||||
output_file_path = file_path[:-5]
|
||||
else:
|
||||
output_file_path = '-'
|
||||
if output_file_path == '-':
|
||||
print output_str,
|
||||
else:
|
||||
output_file = file(output_file_path, 'w')
|
||||
output_file.write('// This file was GENERATED by command:\n')
|
||||
output_file.write('// %s %s\n' %
|
||||
(os.path.basename(__file__), os.path.basename(file_path)))
|
||||
output_file.write('// DO NOT EDIT BY HAND!!!\n\n')
|
||||
output_file.write(output_str)
|
||||
output_file.close()
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main(sys.argv)
|
||||
Загрузка…
Ссылка в новой задаче