/**************************************************************************** Copyright (C) 2013 Henry van Merode. All rights reserved. Copyright (c) 2015 Chukong Technologies Inc. http://www.cocos2d-x.org Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ****************************************************************************/ #include "CCPUScriptParser.h" NS_CC_BEGIN PUScriptParser::PUScriptParser() { } PUScriptParser::~PUScriptParser() { } void traceScriptParserCell(PUConcreteNodeList& nodes,int level) { PUConcreteNodeList::const_iterator it = nodes.begin(); for(;it != nodes.end();it++) { printf("%s,##%d\n",(*it)->token.c_str(),level); if((*it)->children.size() != 0) { traceScriptParserCell((*it)->children,level+1); } } } void traceScriptParser(PUConcreteNodeList& nodes) { traceScriptParserCell(nodes,1); } void PUScriptParser::parse(PUConcreteNodeList& nodes,const PUScriptTokenList& tokens) { // MEMCATEGORY_GENERAL because SharedPtr can only free using that category enum{READY, OBJECT}; unsigned int state = READY; PUConcreteNode *parent = 0; PUConcreteNode* node; PUScriptToken *token = 0; PUScriptTokenList::const_iterator i = tokens.begin(), end = tokens.end(); // int kkkk = 0; while(i != end) { // kkkk ++; token = (*i); switch(state) { case READY: if(token->type == TID_WORD) { if(token->lexeme == "import") { node = new (std::nothrow) PUConcreteNode; node->token = token->lexeme; node->file = token->file; node->line = token->line; node->type = CNT_IMPORT; // The next token is the target ++i; if(i == end || ((*i)->type != TID_WORD && (*i)->type != TID_QUOTE)) { printf("Except,expected import target at line :%d,ScriptParser::parse",node->line); } PUConcreteNode* temp = new (std::nothrow) PUConcreteNode; temp->parent = node; temp->file = (*i)->file; temp->line = (*i)->line; temp->type = (*i)->type == TID_WORD ? CNT_WORD : CNT_QUOTE; if(temp->type == CNT_QUOTE) temp->token = (*i)->lexeme.substr(1, token->lexeme.size() - 2); else temp->token = (*i)->lexeme; node->children.push_back(temp); // The second-next token is the source ++i; ++i; if(i == end || ((*i)->type != TID_WORD && (*i)->type != TID_QUOTE)) { printf("expected import source at line :%d,ScriptParser::parse",node->line); } temp = new (std::nothrow) PUConcreteNode; temp->parent = node; temp->file = (*i)->file; temp->line = (*i)->line; temp->type = (*i)->type == TID_WORD ? CNT_WORD : CNT_QUOTE; if(temp->type == CNT_QUOTE) temp->token = (*i)->lexeme.substr(1, (*i)->lexeme.size() - 2); else temp->token = (*i)->lexeme; node->children.push_back(temp); // Consume all the newlines i = skipNewlines(i, end); // Insert the node if(parent) { node->parent = parent; parent->children.push_back(node); } else { node->parent = 0; nodes.push_back(node); } node = nullptr; } else if(token->lexeme == "set") { node = new (std::nothrow) PUConcreteNode; node->token = token->lexeme; node->file = token->file; node->line = token->line; node->type = CNT_VARIABLE_ASSIGN; // The next token is the variable ++i; if(i == end || (*i)->type != TID_VARIABLE) { printf("Exception"); } PUConcreteNode* temp = new (std::nothrow) PUConcreteNode; temp->parent = node; temp->file = (*i)->file; temp->line = (*i)->line; temp->type = CNT_VARIABLE; temp->token = (*i)->lexeme; node->children.push_back(temp); // The next token is the assignment ++i; if(i == end || ((*i)->type != TID_WORD && (*i)->type != TID_QUOTE)) { printf("expected variable value at line %d ScriptParser::parse\n",node->line); } temp = new (std::nothrow) PUConcreteNode; temp->parent = node; temp->file = (*i)->file; temp->line = (*i)->line; temp->type = (*i)->type == TID_WORD ? CNT_WORD : CNT_QUOTE; if(temp->type == CNT_QUOTE) temp->token = (*i)->lexeme.substr(1, (*i)->lexeme.size() - 2); else temp->token = (*i)->lexeme; node->children.push_back(temp); // Consume all the newlines i = skipNewlines(i, end); // Insert the node if(parent) { node->parent = parent; parent->children.push_back(node); } else { node->parent = 0; nodes.push_back(node); } node = nullptr; } else { node = new (std::nothrow) PUConcreteNode(); node->file = token->file; node->line = token->line; node->type = token->type == TID_WORD ? CNT_WORD : CNT_QUOTE; if(node->type == CNT_QUOTE) node->token = token->lexeme.substr(1, token->lexeme.size() - 2); else node->token = token->lexeme; // Insert the node if(parent) { node->parent = parent; parent->children.push_back(node); } else { node->parent = 0; nodes.push_back(node); } // Set the parent parent = node; // Switch states state = OBJECT; node = nullptr; } } else if(token->type == TID_RBRACKET) { // Go up one level if we can if(parent) parent = parent->parent; node = new (std::nothrow) PUConcreteNode(); node->token = token->lexeme; node->file = token->file; node->line = token->line; node->type = CNT_RBRACE; // Consume all the newlines i = skipNewlines(i, end); // Insert the node if(parent) { node->parent = parent; parent->children.push_back(node); } else { node->parent = 0; nodes.push_back(node); } // Move up another level if(parent) parent = parent->parent; node = nullptr; } break; case OBJECT: if(token->type == TID_NEWLINE) { // Look ahead to the next non-newline token and if it isn't an {, this was a property PUScriptTokenList::const_iterator next = skipNewlines(i, end); if(next == end || (*next)->type != TID_LBRACKET) { // Ended a property here if(parent) parent = parent->parent; state = READY; } } else if(token->type == TID_COLON) { node = new (std::nothrow) PUConcreteNode(); node->token = token->lexeme; node->file = token->file; node->line = token->line; node->type = CNT_COLON; // The following token are the parent objects (base classes). // Require at least one of them. PUScriptTokenList::const_iterator j = i + 1; j = skipNewlines(j, end); if(j == end || ((*j)->type != TID_WORD && (*j)->type != TID_QUOTE)) { printf("expected object identifier at line %d ScriptParser::parse\n",node->line); } while(j != end && ((*j)->type == TID_WORD || (*j)->type == TID_QUOTE)) { PUConcreteNode* tempNode = new (std::nothrow) PUConcreteNode; tempNode->token = (*j)->lexeme; tempNode->file = (*j)->file; tempNode->line = (*j)->line; tempNode->type = (*j)->type == TID_WORD ? CNT_WORD : CNT_QUOTE; tempNode->parent = node; node->children.push_back(tempNode); ++j; } // Move it backwards once, since the end of the loop moves it forwards again anyway j--; i = j; // Insert the node if(parent) { node->parent = parent; parent->children.push_back(node); } else { node->parent = 0; nodes.push_back(node); } node = nullptr; } else if(token->type == TID_LBRACKET) { node = new (std::nothrow) PUConcreteNode; node->token = token->lexeme; node->file = token->file; node->line = token->line; node->type = CNT_LBRACE; // Consume all the newlines i = skipNewlines(i, end); // Insert the node if(parent) { node->parent = parent; parent->children.push_back(node); } else { node->parent = 0; nodes.push_back(node); } // Set the parent parent = node; // Change the state state = READY; node = nullptr; } else if(token->type == TID_RBRACKET) { // Go up one level if we can if(parent) parent = parent->parent; // If the parent is currently a { then go up again if(parent && parent->type == CNT_LBRACE && parent->parent) parent = parent->parent; node = new (std::nothrow) PUConcreteNode; node->token = token->lexeme; node->file = token->file; node->line = token->line; node->type = CNT_RBRACE; // Consume all the newlines i = skipNewlines(i, end); // Insert the node if(parent) { node->parent = parent; parent->children.push_back(node); } else { node->parent = 0; nodes.push_back(node); } // Move up another level if(parent) parent = parent->parent; node = nullptr; state = READY; } else if(token->type == TID_VARIABLE) { node = new (std::nothrow) PUConcreteNode; node->token = token->lexeme; node->file = token->file; node->line = token->line; node->type = CNT_VARIABLE; // Insert the node if(parent) { node->parent = parent; parent->children.push_back(node); } else { node->parent = 0; nodes.push_back(node); } node = nullptr; } else if(token->type == TID_QUOTE) { node = new (std::nothrow) PUConcreteNode; node->token = token->lexeme.substr(1, token->lexeme.size() - 2); node->file = token->file; node->line = token->line; node->type = CNT_QUOTE; // Insert the node if(parent) { node->parent = parent; parent->children.push_back(node); } else { node->parent = 0; nodes.push_back(node); } node = nullptr; } else if(token->type == TID_WORD) { node = new (std::nothrow) PUConcreteNode; node->token = token->lexeme; node->file = token->file; node->line = token->line; node->type = CNT_WORD; // Insert the node if(parent) { node->parent = parent; parent->children.push_back(node); } else { node->parent = 0; nodes.push_back(node); } node = nullptr; } break; } ++i; } // traceScriptParser(nodes);// // printf("kkkk:%d\n",kkkk);// } void PUScriptParser::parseChunk(PUConcreteNodeList& nodes, const PUScriptTokenList &tokens) { PUConcreteNode* node = nullptr; PUScriptToken *token = 0; for(PUScriptTokenList::const_iterator i = tokens.begin(); i != tokens.end(); ++i) { token = *i; node = nullptr; switch(token->type) { case TID_VARIABLE: node = new (std::nothrow) PUConcreteNode; node->file = token->file; node->line = token->line; node->parent = 0; node->token = token->lexeme; node->type = CNT_VARIABLE; break; case TID_WORD: node = new (std::nothrow) PUConcreteNode; node->file = token->file; node->line = token->line; node->parent = 0; node->token = token->lexeme; node->type = CNT_WORD; break; case TID_QUOTE: node = new (std::nothrow) PUConcreteNode; node->file = token->file; node->line = token->line; node->parent = 0; node->token = token->lexeme.substr(1, token->lexeme.size() - 2); node->type = CNT_QUOTE; default: printf("unexpected token,%s,%d\n",token->lexeme.c_str(),token->line); } if(node != nullptr) nodes.push_back(node); } } PUScriptToken *PUScriptParser::getToken(PUScriptTokenList::iterator i, PUScriptTokenList::iterator end, int offset) { PUScriptToken *token = 0; PUScriptTokenList::iterator iter = i + offset; if(iter != end) token = (*i); return token; } PUScriptTokenList::const_iterator PUScriptParser::skipNewlines(PUScriptTokenList::const_iterator i, PUScriptTokenList::const_iterator end) { while(i != end && (*i)->type == TID_NEWLINE) ++i; return i; } PUConcreteNode::~PUConcreteNode() { for (auto iter : children){ delete iter; } } NS_CC_END