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https://github.com/IfcOpenShell/IfcOpenShell.git
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Stinkfist0
289 lines
9.9 KiB
C++
289 lines
9.9 KiB
C++
/********************************************************************************
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* *
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* This file is part of IfcOpenShell. *
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* *
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* IfcOpenShell is free software: you can redistribute it and/or modify *
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* it under the terms of the Lesser GNU General Public License as published by *
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* the Free Software Foundation, either version 3.0 of the License, or *
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* (at your option) any later version. *
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* *
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* IfcOpenShell 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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* Lesser GNU General Public License for more details. *
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* *
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* You should have received a copy of the Lesser GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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* *
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********************************************************************************/
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/********************************************************************************
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* *
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* This file provides functions for loading an IFC file into memory and access *
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* its entities either by ID, by an IfcSchema::Type or by reference *
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* *
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********************************************************************************/
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#ifndef IFCPARSE_H
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#define IFCPARSE_H
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#define IFCOPENSHELL_VERSION "0.5.0-dev"
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#include <string>
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#include <sstream>
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#include <iostream>
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#include <vector>
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#include <fstream>
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#include <cstring>
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#include <map>
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#include <boost/shared_ptr.hpp>
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#include <boost/dynamic_bitset.hpp>
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#include "ifc_parse_api.h"
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#include "../ifcparse/IfcCharacterDecoder.h"
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#include "../ifcparse/IfcUtil.h"
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#include "../ifcparse/IfcLogger.h"
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#ifdef USE_IFC4
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#include "../ifcparse/Ifc4.h"
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#else
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#include "../ifcparse/Ifc2x3.h"
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#endif
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#include "../ifcparse/IfcSpfStream.h"
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namespace IfcParse {
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class Entity;
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class IfcFile;
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class IfcSpfLexer;
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enum TokenType {
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Token_NONE,
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Token_STRING,
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Token_IDENTIFIER,
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Token_OPERATOR,
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Token_ENUMERATION,
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Token_KEYWORD,
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Token_INT,
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Token_BOOL,
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Token_FLOAT,
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Token_BINARY
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};
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struct Token {
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IfcSpfLexer* lexer; //TODO: remove it from here
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unsigned startPos, endPos;
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TokenType type;
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union {
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bool value_bool; //types: BOOL
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char value_char; //types: OPERATOR
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int value_int; //types: INT, IDENTIFIER
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double value_double; //types: FLOAT
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};
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Token() : lexer(0), startPos(0), endPos(0), type(Token_NONE) {}
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Token(IfcSpfLexer* _lexer, unsigned _startPos, unsigned _endPos, TokenType _type)
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: lexer(_lexer), startPos(_startPos), endPos(_endPos), type(_type) {}
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};
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/// Provides functions to convert Tokens to binary data
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/// Tokens are merely offsets to where they can be read in the file
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class IFC_PARSE_API TokenFunc {
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private:
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static bool startsWith(const Token& t, char c);
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public:
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/// Returns the offset at which the token is read from the file
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// static unsigned int Offset(const Token& t);
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/// Returns whether the token can be interpreted as a string
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static bool isString(const Token& t);
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/// Returns whether the token can be interpreted as an identifier
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static bool isIdentifier(const Token& t);
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/// Returns whether the token can be interpreted as a syntactical operator
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static bool isOperator(const Token& t);
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/// Returns whether the token is a given operator
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static bool isOperator(const Token& t, char op);
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/// Returns whether the token can be interpreted as an enumerated value
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static bool isEnumeration(const Token& t);
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/// Returns whether the token can be interpreted as a datatype name
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static bool isKeyword(const Token& t);
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/// Returns whether the token can be interpreted as an integer
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static bool isInt(const Token& t);
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/// Returns whether the token can be interpreted as a boolean
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static bool isBool(const Token& t);
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/// Returns whether the token can be interpreted as a floating point number
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static bool isFloat(const Token& t);
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/// Returns whether the token can be interpreted as a binary type
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static bool isBinary(const Token& t);
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/// Returns the token interpreted as an integer
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static int asInt(const Token& t);
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/// Returns the token interpreted as an identifier
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static int asIdentifier(const Token& t);
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/// Returns the token interpreted as an boolean (.T. or .F.)
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static bool asBool(const Token& t);
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/// Returns the token as a floating point number
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static double asFloat(const Token& t);
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/// Returns the token as a string (without the dot or apostrophe)
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static std::string asString(const Token& t);
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/// Returns the token as a string in internal buffer (for optimization purposes)
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static const std::string &asStringRef(const Token& t);
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/// Returns the token as a string (without the dot or apostrophe)
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static boost::dynamic_bitset<> asBinary(const Token& t);
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/// Returns a string representation of the token (including the dot or apostrophe)
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static std::string toString(const Token& t);
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};
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//
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// Functions for creating Tokens from an arbitary file offset
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// The first 4 bits are reserved for Tokens of type ()=,;$*
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//
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Token OperatorTokenPtr(IfcSpfLexer* tokens, unsigned start, unsigned end);
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Token GeneralTokenPtr(IfcSpfLexer* tokens, unsigned start, unsigned end);
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Token NoneTokenPtr();
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/// A stream of tokens to be read from a IfcSpfStream.
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class IFC_PARSE_API IfcSpfLexer {
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private:
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IfcCharacterDecoder* decoder;
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//storage for temporary string without allocation
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mutable std::string _tempString;
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unsigned int skipWhitespace();
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unsigned int skipComment();
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public:
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std::string &GetTempString() const { return _tempString; }
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IfcSpfStream* stream;
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IfcFile* file;
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IfcSpfLexer(IfcSpfStream* s, IfcFile* f);
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Token Next();
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~IfcSpfLexer();
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void TokenString(unsigned int offset, std::string &result);
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};
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/// Argument of type list, e.g.
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/// #1=IfcDirection((1.,0.,0.));
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/// ==========
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class IFC_PARSE_API ArgumentList: public Argument {
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private:
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std::vector<Argument*> list;
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void push(Argument* l);
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public:
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~ArgumentList();
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void read(IfcSpfLexer* t, std::vector<unsigned int>& ids);
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IfcUtil::ArgumentType type() const;
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operator std::vector<int>() const;
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operator std::vector<double>() const;
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operator std::vector<std::string>() const;
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operator std::vector<boost::dynamic_bitset<> >() const;
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operator IfcEntityList::ptr() const;
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operator std::vector< std::vector<int> >() const;
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operator std::vector< std::vector<double> >() const;
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operator IfcEntityListList::ptr() const;
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bool isNull() const;
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unsigned int size() const;
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Argument* operator [] (unsigned int i) const;
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void set(unsigned int i, Argument*);
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std::string toString(bool upper=false) const;
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};
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/// Argument being null, e.g. '$'
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/// == ===
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class IFC_PARSE_API NullArgument : public Argument {
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public:
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NullArgument() {}
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IfcUtil::ArgumentType type() const { return IfcUtil::Argument_NULL; }
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bool isNull() const { return true; }
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unsigned int size() const { return 1; }
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Argument* operator [] (unsigned int /*i*/) const { throw IfcException("Argument is not a list of attributes"); }
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std::string toString(bool /*upper=false*/) const { return "$"; }
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};
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/// Argument of type scalar or string, e.g.
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/// #1=IfcVector(#2,1.0);
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/// == ===
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class IFC_PARSE_API TokenArgument : public Argument {
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private:
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public:
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Token token;
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TokenArgument(const Token& t);
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IfcUtil::ArgumentType type() const;
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operator int() const;
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operator bool() const;
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operator double() const;
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operator std::string() const;
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operator boost::dynamic_bitset<>() const;
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operator IfcUtil::IfcBaseClass*() const;
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bool isNull() const;
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unsigned int size() const;
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Argument* operator [] (unsigned int i) const;
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std::string toString(bool upper=false) const;
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};
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/// Argument of an IFC simple type
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/// #1=IfcTrimmedCurve(#2,(IFCPARAMETERVALUE(0.)),(IFCPARAMETERVALUE(1.)),.T.,.PARAMETER.);
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/// ===================== =====================
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class IFC_PARSE_API EntityArgument : public Argument {
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private:
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IfcUtil::IfcBaseClass* entity;
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public:
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EntityArgument(const Token& t);
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~EntityArgument();
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IfcUtil::ArgumentType type() const;
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operator IfcUtil::IfcBaseClass*() const;
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bool isNull() const;
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unsigned int size() const;
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Argument* operator [] (unsigned int i) const;
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std::string toString(bool upper=false) const;
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};
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/// Entity defined in an IFC file, e.g.
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/// #1=IfcDirection((1.,0.,0.));
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/// ============================
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class IFC_PARSE_API Entity : public IfcAbstractEntity {
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private:
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mutable ArgumentList* args;
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mutable IfcSchema::Type::Enum _type;
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public:
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/// The EXPRESS ENTITY_INSTANCE_NAME
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unsigned int _id;
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/// The offset at which the entity is read
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unsigned int offset;
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Entity(unsigned int i, IfcFile* t);
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Entity(unsigned int i, IfcFile* t, unsigned int o);
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virtual ~Entity();
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IfcEntityList::ptr getInverse(IfcSchema::Type::Enum type, int attribute_index);
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void Load(std::vector<unsigned int>& ids, bool seek=false) const;
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Argument* getArgument (unsigned int i);
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unsigned int getArgumentCount() const;
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std::string toString(bool upper=false) const;
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std::string datatype() const;
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IfcSchema::Type::Enum type() const;
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bool is(IfcSchema::Type::Enum v) const;
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unsigned int id();
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IfcWrite::IfcWritableEntity* isWritable();
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};
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}
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IFC_PARSE_API std::ostream& operator<< (std::ostream& os, const IfcParse::IfcFile& f);
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#endif
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