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416 lines
10 KiB
C++
416 lines
10 KiB
C++
// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef RY_PD_PARSE_RULES_H
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#define RY_PD_PARSE_RULES_H
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#include "parse_node.h"
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#define DECLARE_PARSE(nodename) CParseNode *parse##nodename(CTokenizer &tokenizer);
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DECLARE_PARSE(Main)
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DECLARE_PARSE(File)
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DECLARE_PARSE(Include)
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DECLARE_PARSE(UsePch)
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DECLARE_PARSE(Db)
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DECLARE_PARSE(CppCode)
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DECLARE_PARSE(Type)
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DECLARE_PARSE(Class)
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DECLARE_PARSE(Declaration)
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DECLARE_PARSE(Enum)
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DECLARE_PARSE(EnumSimpleValue)
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DECLARE_PARSE(EnumRange)
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DECLARE_PARSE(Dimension)
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DECLARE_PARSE(LogMsg)
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DECLARE_PARSE(LogContext)
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/*
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* Parser Help Macros
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*/
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/*
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* Start node parsing without optional description
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* PARSE_START_NO_DESCRIPTION(Main, CParseNode)
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*
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* ...
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*
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* PARSE_END
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*/
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#define PARSE_START_NO_DESCRIPTION(nodename, nodetype) \
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CParseNode *parse##nodename(CTokenizer &tokenizer) \
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{ \
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tokenizer.push(); \
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nodetype *main = new nodetype(); \
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main->StartToken = tokenizer.currentToken(); \
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CParseNode *parsed; \
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parsed = NULL;
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#define PARSE_END \
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return main; \
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}
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/*
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* Start node parsing with optional description
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* PARSE_START(Main, CParseNode)
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*
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* ...
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*
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* PARSE_END
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*/
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#define PARSE_START(nodename, nodetype) \
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CParseNode *parse##nodename(CTokenizer &tokenizer) \
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{ \
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tokenizer.push(); \
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nodetype *main = new nodetype(); \
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main->StartToken = tokenizer.currentToken(); \
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CParseNode *parsed; \
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parsed = NULL; \
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PARSE_OPT_KEYWORD_IN(Description, Description)
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/*
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* Lock parsing to the current token. If parse fail later, this will cause
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* parser to generate an error after this token.
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* PARSE_KEYWORD(Colon)
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* PARSE_MARK
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*/
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#define PARSE_MARK tokenizer.leaveMark();
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/*
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* Force the parser to fail and leave current node
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*/
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#define PARSE_FAIL \
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{ \
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delete main; \
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tokenizer.pop(); \
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return NULL; \
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}
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/*
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* Parse a given token
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* PARSE_KEYWORD(Extern)
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*/
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#define PARSE_KEYWORD(keyword) \
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{ \
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if (tokenizer.end() || tokenizer.current() != Token##keyword) \
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PARSE_FAIL \
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tokenizer.next(); \
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}
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/*
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* Parse a token and store value into a string
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* PARSE_KEYWORD_IN_TEMP(Identifier, Name)
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*/
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#define PARSE_KEYWORD_IN_TEMP(keyword, temp) \
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{ \
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if (tokenizer.end() || tokenizer.current() != Token##keyword) \
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PARSE_FAIL \
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temp = tokenizer.get(tokenizer.currentToken()); \
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tokenizer.next(); \
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}
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/*
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* Parse a token and store value into a node string attribute
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* PARSE_KEYWORD_IN(Identifier, Name) where Name is an attribute of the current node
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*/
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#define PARSE_KEYWORD_IN(keyword, savein) PARSE_KEYWORD_IN_TEMP(keyword, main->savein)
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/*
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* Parse a token and push value into a vector of string of the current node
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* PARSE_ADD_KEYWORD_IN(Identifier, Names) where Names is a vector<string> of the node
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*/
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#define PARSE_ADD_KEYWORD_IN(keyword, savein) \
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{ \
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if (tokenizer.end() || tokenizer.current() != Token##keyword) \
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PARSE_FAIL \
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main->savein.push_back(tokenizer.get(tokenizer.currentToken())); \
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tokenizer.next(); \
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}
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/*
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* Parse a couple of 2 tokens and push them as string into a vector of pair of string of the current node
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* PARSE_ADD_2_KEYWORD_IN(Identifier, Identifier, Prototype) where Prototype is a vector<pair<string, string> > of the node
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*/
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#define PARSE_ADD_2_KEYWORD_IN(keyword1, keyword2, savein) \
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{ \
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if (tokenizer.end() || tokenizer.current() != Token##keyword1) \
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PARSE_FAIL \
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CTokenizer::CToken t1 = tokenizer.currentToken(); \
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tokenizer.next(); \
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if (tokenizer.end() || tokenizer.current() != Token##keyword2) \
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PARSE_FAIL \
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CTokenizer::CToken t2 = tokenizer.currentToken(); \
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tokenizer.next(); \
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main->savein.push_back(std::make_pair<std::string, std::string>(tokenizer.get(t1), tokenizer.get(t2))); \
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}
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/*
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* Parse a string into a attribute of the node
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* PARSE_STRING(FileName)
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*/
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#define PARSE_STRING(savein) PARSE_KEYWORD_IN(String, savein)
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/*
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* Parse a scoped identifier and store value into an attribute of the node
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* PARSE_SCOPE_IDF(ScopedType) where a scoped identifier may be of the form 'Identifier' or 'Identifier::Identifier'
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*/
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#define PARSE_SCOPE_IDF(savein) \
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{ \
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if (tokenizer.end() || (tokenizer.current() != TokenIdentifier && tokenizer.current() != TokenScopedIdentifier)) \
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PARSE_FAIL \
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main->savein = tokenizer.get(tokenizer.currentToken()); \
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tokenizer.next(); \
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}
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/*
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* Parse a single Identifier into a node'a attribute
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* PARSE_IDENTIFIER(Name)
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*/
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#define PARSE_IDENTIFIER(savein) PARSE_KEYWORD_IN(Identifier, savein)
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/*
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* Parse a single Identifier and push it to a vector<string>
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* PARSE_ADD_IDENTIFIER(Names)
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*/
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#define PARSE_ADD_IDENTIFIER(savein) PARSE_ADD_KEYWORD_IN(Identifier, savein)
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/*
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* Parse a integer and store value (as int)
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* PARSE_INT(DefaultIntValue)
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*/
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#define PARSE_INT(savein) \
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{ \
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if (tokenizer.end() || tokenizer.current() != TokenNumber) \
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PARSE_FAIL \
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NLMISC::fromString(tokenizer.get(tokenizer.currentToken()), main->savein); \
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tokenizer.next(); \
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}
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/*
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* Parse a value, which may be a string or a number (float/int), and store it as a string
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* PARSE_VALUE(DefaultValue)
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*/
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#define PARSE_VALUE(savein) \
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{ \
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if (tokenizer.end() || (tokenizer.current() != TokenIdentifier && tokenizer.current() != TokenNumber && tokenizer.current() != TokenString)) \
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PARSE_FAIL \
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main->savein = tokenizer.get(tokenizer.currentToken()); \
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tokenizer.next(); \
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}
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/*
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* Start a bloc of alternative bloc to examine. Parser will examine first alternative, and if parsing fails
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* it will examine the second alternative. Usually alternative bloc is ended by a PARSE_FAIL so parsing may examine
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* previous following rules...
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* PARSE_ALTERNATIVE(Include)
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* PARSE_ALTERNATIVE(Type)
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* PARSE_ALTERNATIVE(Class)
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* PARSE_FAIL // parsing fails if neither Include can be parsed nor Type nor Class
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*/
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#define PARSE_ALTERNATIVE(nodename) \
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if ( (parsed = parse##nodename(tokenizer)) ) \
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{ \
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parsed->Parent = main; \
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main->Nodes.push_back(parsed); \
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} \
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else
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/*
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* End a bloc of alternative without failing, usually to allow parsing of optionnal node blocs
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*/
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#define PARSE_END_ALTERNATIVE() \
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{}
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/*
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* Parse a node. This is not an alternative, if node parsing fails, current node parsing fails
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* PARSE_NODE(Include)
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*/
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#define PARSE_NODE(nodename, savein) \
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if ( (main->savein = parse##nodename(tokenizer)) ) \
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{ \
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main->savein->Parent = main; \
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} \
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else \
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PARSE_FAIL
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/*
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* Start a bloc with '{'
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*/
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#define PARSE_START_BLOC \
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PARSE_KEYWORD(OpenBrace) \
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while (!tokenizer.end() && tokenizer.current() != TokenCloseBrace) \
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{
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/*
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* End a bloc with '}'
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*/
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#define PARSE_END_BLOC \
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} \
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PARSE_KEYWORD(CloseBrace)
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/*
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* Parse a list of tokens (unknown yet) separated by special tokens
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* PARSE_START_LIST(OpenParenthesis, CloseParenthesis)
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* PARSE_ADD_KEYWORD_IN(Identifier, Names)
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* PARSE_END_LIST(CloseParenthesis, Comma)
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*/
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#define PARSE_START_LIST(starttoken, endtoken) \
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PARSE_KEYWORD(starttoken) \
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while (!tokenizer.end() && tokenizer.current() != Token##endtoken) \
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{
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#define PARSE_END_LIST(endtoken, separator) \
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if (tokenizer.end() || tokenizer.current() != Token##separator) \
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break; \
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tokenizer.next(); \
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} \
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PARSE_KEYWORD(endtoken)
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/*
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* Parse an optionnal list, see also PARSE_START_LIST/PARSE_END_LIST
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*/
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#define PARSE_OPT_LIST(starttoken, endtoken) \
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if (!tokenizer.end() && tokenizer.current() == Token##starttoken) \
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{ \
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PARSE_START_LIST(starttoken, endtoken)
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#define PARSE_END_OPT_LIST(endtoken, separator) \
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PARSE_END_LIST(endtoken, separator) \
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}
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/*
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* Repeat parsing between PARSE_OPT_BEFORE and PARSE_END_OPT_BEFORE while next token is not reached
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* To be used with PARSE_OPT_IN
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* PARSE_OPT_BEFORE(Class)
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* PARSE_OPT_IN(Mapped, MappedFlag);
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* PARSE_OPT_IN(Derived, DerivedFlag);
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* PARSE_END_OPT_BEFORE()
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*/
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#define PARSE_OPT_BEFORE(token) \
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while (!tokenizer.end() && tokenizer.current() != Token##token) \
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{ \
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switch (tokenizer.current()) \
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{
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#define PARSE_OPT_BEFORE_2(token1, token2) \
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while (!tokenizer.end() && tokenizer.current() != Token##token1 && tokenizer.current() != Token##token2) \
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{ \
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switch (tokenizer.current()) \
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{
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#define PARSE_OPT_IN(token, flag) \
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case Token##token: \
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if (!main->flag) \
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{ \
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main->flag = true; \
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} \
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else \
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{ \
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PARSE_FAIL \
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} \
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break;
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#define PARSE_END_OPT_BEFORE() \
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default: \
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PARSE_FAIL \
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break; \
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} \
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tokenizer.next(); \
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}
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/*
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* Parse a list of keywork separated by a given token, and store them into a vector<string>
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* see also PARSE_ADD_KEYWORD_IN
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*/
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#define PARSE_LIST_KEYWORDS(keyword, savein, separator) \
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PARSE_ADD_KEYWORD_IN(keyword, savein) \
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while (!tokenizer.end() && tokenizer.current() == Token##separator) \
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{ \
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tokenizer.next(); \
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PARSE_ADD_KEYWORD_IN(keyword, savein) \
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}
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/*
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* PArse a list of couple of 2 keywords and store them into a vector<pair<string, string> >
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* see also PARSE_ADD_2_KEYWORD_IN
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*/
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#define PARSE_LIST_2_KEYWORDS(keyword1, keyword2, savein, separator) \
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PARSE_ADD_2_KEYWORD_IN(keyword1, keyword2, savein) \
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while (!tokenizer.end() && tokenizer.current() == Token##separator) \
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{ \
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tokenizer.next(); \
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PARSE_ADD_2_KEYWORD_IN(keyword1, keyword2, savein) \
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}
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#define PARSE_LIST_IDENTIFIERS(starttoken, separator, endtoken, savein) \
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PARSE_START_LIST(starttoken, endtoken) \
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PARSE_ADD_IDENTIFIER(savein) \
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PARSE_END_LIST(endtoken, separator)
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#define PARSE_OPT(opttoken) \
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if (!tokenizer.end() && tokenizer.current() == Token##opttoken) \
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{ \
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tokenizer.next(); \
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#define PARSE_NEXT_OPT(opttoken) \
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} \
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else if (!tokenizer.end() && tokenizer.current() == Token##opttoken) \
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{ \
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tokenizer.next(); \
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#define PARSE_LAST_OPT \
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} \
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else \
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{
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#define PARSE_END_OPT \
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}
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#define PARSE_OPT_KEYWORD_IN(keyword, savein) \
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{ \
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if (!tokenizer.end() && tokenizer.current() == Token##keyword) \
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{ \
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main->savein = tokenizer.get(tokenizer.currentToken()); \
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tokenizer.next(); \
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} \
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}
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#endif
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