| // 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_COMPILER_H_ |
| #define V8_COMPILER_H_ |
| |
| #include "frame-element.h" |
| #include "parser.h" |
| #include "zone.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| // CompilationInfo encapsulates some information known at compile time. |
| class CompilationInfo BASE_EMBEDDED { |
| public: |
| CompilationInfo(Handle<SharedFunctionInfo> shared_info, |
| Handle<Object> receiver, |
| int loop_nesting) |
| : shared_info_(shared_info), |
| receiver_(receiver), |
| loop_nesting_(loop_nesting), |
| has_this_properties_(false), |
| has_globals_(false) { |
| } |
| |
| Handle<SharedFunctionInfo> shared_info() { return shared_info_; } |
| |
| bool has_receiver() { return !receiver_.is_null(); } |
| Handle<Object> receiver() { return receiver_; } |
| |
| int loop_nesting() { return loop_nesting_; } |
| |
| bool has_this_properties() { return has_this_properties_; } |
| void set_has_this_properties(bool flag) { has_this_properties_ = flag; } |
| |
| bool has_globals() { return has_globals_; } |
| void set_has_globals(bool flag) { has_globals_ = flag; } |
| |
| private: |
| Handle<SharedFunctionInfo> shared_info_; |
| Handle<Object> receiver_; |
| int loop_nesting_; |
| bool has_this_properties_; |
| bool has_globals_; |
| }; |
| |
| |
| // The V8 compiler |
| // |
| // General strategy: Source code is translated into an anonymous function w/o |
| // parameters which then can be executed. If the source code contains other |
| // functions, they will be compiled and allocated as part of the compilation |
| // of the source code. |
| |
| // Please note this interface returns function boilerplates. |
| // This means you need to call Factory::NewFunctionFromBoilerplate |
| // before you have a real function with context. |
| |
| class Compiler : public AllStatic { |
| public: |
| enum ValidationState { VALIDATE_JSON, DONT_VALIDATE_JSON }; |
| |
| // All routines return a JSFunction. |
| // If an error occurs an exception is raised and |
| // the return handle contains NULL. |
| |
| // Compile a String source within a context. |
| static Handle<JSFunction> Compile(Handle<String> source, |
| Handle<Object> script_name, |
| int line_offset, int column_offset, |
| v8::Extension* extension, |
| ScriptDataImpl* script_Data); |
| |
| // Compile a String source within a context for Eval. |
| static Handle<JSFunction> CompileEval(Handle<String> source, |
| Handle<Context> context, |
| bool is_global, |
| ValidationState validation); |
| |
| // Compile from function info (used for lazy compilation). Returns |
| // true on success and false if the compilation resulted in a stack |
| // overflow. |
| static bool CompileLazy(CompilationInfo* info); |
| |
| // Compile a function boilerplate object (the function is possibly |
| // lazily compiled). Called recursively from a backend code |
| // generator 'caller' to build the boilerplate. |
| static Handle<JSFunction> BuildBoilerplate(FunctionLiteral* node, |
| Handle<Script> script, |
| AstVisitor* caller); |
| |
| // Set the function info for a newly compiled function. |
| static void SetFunctionInfo(Handle<JSFunction> fun, |
| FunctionLiteral* lit, |
| bool is_toplevel, |
| Handle<Script> script); |
| }; |
| |
| |
| // During compilation we need a global list of handles to constants |
| // for frame elements. When the zone gets deleted, we make sure to |
| // clear this list of handles as well. |
| class CompilationZoneScope : public ZoneScope { |
| public: |
| explicit CompilationZoneScope(ZoneScopeMode mode) : ZoneScope(mode) { } |
| virtual ~CompilationZoneScope() { |
| if (ShouldDeleteOnExit()) { |
| FrameElement::ClearConstantList(); |
| Result::ClearConstantList(); |
| } |
| } |
| }; |
| |
| |
| } } // namespace v8::internal |
| |
| #endif // V8_COMPILER_H_ |