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	Commit message (Expand)	Author	Age	Files	Lines
*	mingw-w64-{gtk3,gdk-pixbuf2}: Package static libraries	LAN-TW	2013-10-29	1	-2/+2
*	mingw-w64-gtk3: 3.8.5 -> 3.8.6	LAN-TW	2013-10-27	1	-4/+4
*	mingw-w64-gtk3: 3.8.4 -> 3.8.5	LAN-TW	2013-10-14	1	-12/+6
*	mingw-w64-gtk3: Preserve most share files (cherry-picked from master)	LAN-TW	2013-10-14	1	-2/+3
*	mingw-w64-gtk3: 3.8.2-3 -> 3.8.4-1	LAN-TW	2013-08-31	1	-3/+3
*	mingw-w64-gtk3: python2 is required to run gdbus-codegen	LAN-TW	2013-08-22	1	-2/+3
*	mingw-w64-gtk{2,3}: add native gtk to makedepends	LAN-TW	2013-06-25	1	-3/+4
*	mingw-w64-gtk3: 3.8.2-1 (add required version to depends)	LAN-TW	2013-06-18	1	-4/+6
*	mingw-w64-gtk3: use local patch files	LAN-TW	2013-06-01	2	-5/+21
*	Initial commit - Import old files	LAN-TW	2013-05-18	1	-0/+68

/* This file is part of cpp-ethereum. cpp-ethereum is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. cpp-ethereum is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>. This file is derived from the file "scanner.h", which was part of the V8 project. The original copyright header follows: Copyright 2006-2012, 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. */ /** * @author Christian <c@ethdev.com> * @date 2014 * Solidity scanner. */ #pragma once #include <libdevcore/Common.h> #include <libdevcore/CommonData.h> #include <libevmasm/SourceLocation.h> #include <libsolidity/parsing/Token.h> namespace dev { namespace solidity { class AstRawString; class AstValueFactory; class ParserRecorder; class CharStream { public: CharStream(): m_position(0) {} explicit CharStream(std::string const& _source): m_source(_source), m_position(0) {} int position() const { return m_position; } bool isPastEndOfInput(size_t _charsForward = 0) const { return (m_position + _charsForward) >= m_source.size(); } char get(size_t _charsForward = 0) const { return m_source[m_position + _charsForward]; } char advanceAndGet(size_t _chars=1); char rollback(size_t _amount); void reset() { m_position = 0; } ///@{ ///@name Error printing helper functions /// Functions that help pretty-printing parse errors /// Do only use in error cases, they are quite expensive. std::string lineAtPosition(int _position) const; std::tuple<int, int> translatePositionToLineColumn(int _position) const; ///@} private: std::string m_source; size_t m_position; }; class Scanner { friend class LiteralScope; public: explicit Scanner(CharStream const& _source = CharStream(), std::string const& _sourceName = "") { reset(_source, _sourceName); } /// Resets the scanner as if newly constructed with _source and _sourceName as input. void reset(CharStream const& _source, std::string const& _sourceName); /// Resets scanner to the start of input. void reset(); /// @returns the next token and advances input Token::Value next(); ///@{ ///@name Information about the current token /// @returns the current token Token::Value currentToken() { return m_currentToken.token; } ElementaryTypeNameToken currentElementaryTypeNameToken() { unsigned firstSize; unsigned secondSize; std::tie(firstSize, secondSize) = m_currentToken.extendedTokenInfo; return ElementaryTypeNameToken(m_currentToken.token, firstSize, secondSize); } SourceLocation currentLocation() const { return m_currentToken.location; } std::string const& currentLiteral() const { return m_currentToken.literal; } std::tuple<unsigned, unsigned> const& currentTokenInfo() const { return m_currentToken.extendedTokenInfo; } ///@} ///@{ ///@name Information about the current comment token SourceLocation currentCommentLocation() const { return m_skippedComment.location; } std::string const& currentCommentLiteral() const { return m_skippedComment.literal; } /// Called by the parser during FunctionDefinition parsing to clear the current comment void clearCurrentCommentLiteral() { m_skippedComment.literal.clear(); } ///@} ///@{ ///@name Information about the next token /// @returns the next token without advancing input. Token::Value peekNextToken() const { return m_nextToken.token; } SourceLocation peekLocation() const { return m_nextToken.location; } std::string const& peekLiteral() const { return m_nextToken.literal; } ///@} std::shared_ptr<std::string const> const& sourceName() const { return m_sourceName; } ///@{ ///@name Error printing helper functions /// Functions that help pretty-printing parse errors /// Do only use in error cases, they are quite expensive. std::string lineAtPosition(int _position) const { return m_source.lineAtPosition(_position); } std::tuple<int, int> translatePositionToLineColumn(int _position) const { return m_source.translatePositionToLineColumn(_position); } ///@} private: /// Used for the current and look-ahead token and comments struct TokenDesc { Token::Value token; SourceLocation location; std::string literal; std::tuple<unsigned, unsigned> extendedTokenInfo; }; ///@{ ///@name Literal buffer support inline void addLiteralChar(char c) { m_nextToken.literal.push_back(c); } inline void addCommentLiteralChar(char c) { m_nextSkippedComment.literal.push_back(c); } inline void addLiteralCharAndAdvance() { addLiteralChar(m_char); advance(); } void addUnicodeAsUTF8(unsigned codepoint); ///@} bool advance() { m_char = m_source.advanceAndGet(); return !m_source.isPastEndOfInput(); } void rollback(int _amount) { m_char = m_source.rollback(_amount); } inline Token::Value selectToken(Token::Value _tok) { advance(); return _tok; } /// If the next character is _next, advance and return _then, otherwise return _else. inline Token::Value selectToken(char _next, Token::Value _then, Token::Value _else); bool scanHexByte(char& o_scannedByte); bool scanUnicode(unsigned& o_codepoint); /// Scans a single Solidity token. void scanToken(); /// Skips all whitespace and @returns true if something was skipped. bool skipWhitespace(); /// Skips all whitespace except Line feeds and returns true if something was skipped bool skipWhitespaceExceptLF(); Token::Value skipSingleLineComment(); Token::Value skipMultiLineComment(); void scanDecimalDigits(); Token::Value scanNumber(char _charSeen = 0); std::tuple<Token::Value, unsigned, unsigned> scanIdentifierOrKeyword(); Token::Value scanString(); Token::Value scanHexString(); Token::Value scanSingleLineDocComment(); Token::Value scanMultiLineDocComment(); /// Scans a slash '/' and depending on the characters returns the appropriate token Token::Value scanSlash(); /// Scans an escape-sequence which is part of a string and adds the /// decoded character to the current literal. Returns true if a pattern /// is scanned. bool scanEscape(); /// Return the current source position. int sourcePos() { return m_source.position(); } bool isSourcePastEndOfInput() { return m_source.isPastEndOfInput(); } TokenDesc m_skippedComment; // desc for current skipped comment TokenDesc m_nextSkippedComment; // desc for next skiped comment TokenDesc m_currentToken; // desc for current token (as returned by Next()) TokenDesc m_nextToken; // desc for next token (one token look-ahead) CharStream m_source; std::shared_ptr<std::string const> m_sourceName; /// one character look-ahead, equals 0 at end of input char m_char; }; } }