mirror of https://gitee.com/bigwinds/arangodb
123 lines
4.9 KiB
C
123 lines
4.9 KiB
C
////////////////////////////////////////////////////////////////////////////////
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/// @brief Ahuacatl, AST to JS code generator
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2012-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_AHUACATL_AHUACATL__CODEGEN_H
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#define ARANGODB_AHUACATL_AHUACATL__CODEGEN_H 1
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#include "Basics/Common.h"
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#include "Basics/associative.h"
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#include "Basics/conversions.h"
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#include "Basics/tri-strings.h"
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#include "Basics/string-buffer.h"
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#include "Basics/vector.h"
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#include "Ahuacatl/ahuacatl-ast-node.h"
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#include "Ahuacatl/ahuacatl-conversions.h"
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#include "Ahuacatl/ahuacatl-scope.h"
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#include "VocBase/document-collection.h"
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// -----------------------------------------------------------------------------
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// --SECTION-- public types
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief typedef for a variable or function register number
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////////////////////////////////////////////////////////////////////////////////
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typedef uint32_t TRI_aql_codegen_register_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief variable (name + register index) type used by code generator
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_aql_codegen_variable_s {
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char* _name; // variable name
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TRI_aql_codegen_register_t _register; // the assigned register
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bool _isCachedSubquery;
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}
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TRI_aql_codegen_variable_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief code generator scope
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_aql_codegen_scope_s {
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TRI_string_buffer_t* _buffer; // generated code
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TRI_aql_scope_e _type; // scope type
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TRI_aql_codegen_register_t _listRegister;
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TRI_aql_codegen_register_t _keyRegister;
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TRI_aql_codegen_register_t _ownRegister;
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TRI_aql_codegen_register_t _resultRegister;
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TRI_aql_codegen_register_t _offsetRegister; // limit offset, limit
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TRI_aql_codegen_register_t _limitRegister; // limit offset, limit
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TRI_aql_codegen_register_t _subqueryRegister;
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TRI_associative_pointer_t _variables; // list of variables in scope
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char const* _prefix; // prefix for variable names, used in FUNCTION scopes only
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TRI_aql_for_hint_t* _hint; // generic hint
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}
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TRI_aql_codegen_scope_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief code generator
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_aql_codegen_js_s {
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TRI_aql_context_t* _context;
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TRI_string_buffer_t _buffer;
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TRI_string_buffer_t _functionBuffer;
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TRI_vector_pointer_t _scopes;
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TRI_aql_codegen_register_t _registerIndex;
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TRI_aql_codegen_register_t _functionIndex;
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int _errorCode; // error number
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char* _errorValue; // error context string
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}
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TRI_aql_codegen_js_t;
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief generate Javascript code for the AST nodes recursively
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////////////////////////////////////////////////////////////////////////////////
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char* TRI_GenerateCodeAql (TRI_aql_context_t* const,
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size_t*);
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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