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Diffstat (limited to 'libsolidity/Token.h')
| -rw-r--r-- | libsolidity/Token.h | 406 |
1 files changed, 406 insertions, 0 deletions
diff --git a/libsolidity/Token.h b/libsolidity/Token.h new file mode 100644 index 00000000..7c7b1c7f --- /dev/null +++ b/libsolidity/Token.h @@ -0,0 +1,406 @@ +// 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. +// +// Modifications as part of cpp-ethereum under the following license: +// +// 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/>. + +#pragma once + +#include <libdevcore/Common.h> +#include <libdevcore/Log.h> +#include <libsolidity/Utils.h> +#include <libsolidity/Exceptions.h> +#include <libdevcore/UndefMacros.h> + +namespace dev +{ +namespace solidity +{ + +// TOKEN_LIST takes a list of 3 macros M, all of which satisfy the +// same signature M(name, string, precedence), where name is the +// symbolic token name, string is the corresponding syntactic symbol +// (or NULL, for literals), and precedence is the precedence (or 0). +// The parameters are invoked for token categories as follows: +// +// T: Non-keyword tokens +// K: Keyword tokens + +// IGNORE_TOKEN is a convenience macro that can be supplied as +// an argument (at any position) for a TOKEN_LIST call. It does +// nothing with tokens belonging to the respective category. + +#define IGNORE_TOKEN(name, string, precedence) + +#define TOKEN_LIST(T, K) \ + /* End of source indicator. */ \ + T(EOS, "EOS", 0) \ + \ + /* Punctuators (ECMA-262, section 7.7, page 15). */ \ + T(LParen, "(", 0) \ + T(RParen, ")", 0) \ + T(LBrack, "[", 0) \ + T(RBrack, "]", 0) \ + T(LBrace, "{", 0) \ + T(RBrace, "}", 0) \ + T(Colon, ":", 0) \ + T(Semicolon, ";", 0) \ + T(Period, ".", 0) \ + T(Conditional, "?", 3) \ + T(Arrow, "=>", 0) \ + \ + /* Assignment operators. */ \ + /* IsAssignmentOp() relies on this block of enum values being */ \ + /* contiguous and sorted in the same order!*/ \ + T(Assign, "=", 2) \ + /* The following have to be in exactly the same order as the simple binary operators*/ \ + T(AssignBitOr, "|=", 2) \ + T(AssignBitXor, "^=", 2) \ + T(AssignBitAnd, "&=", 2) \ + T(AssignShl, "<<=", 2) \ + T(AssignSar, ">>=", 2) \ + T(AssignShr, ">>>=", 2) \ + T(AssignAdd, "+=", 2) \ + T(AssignSub, "-=", 2) \ + T(AssignMul, "*=", 2) \ + T(AssignDiv, "/=", 2) \ + T(AssignMod, "%=", 2) \ + \ + /* Binary operators sorted by precedence. */ \ + /* IsBinaryOp() relies on this block of enum values */ \ + /* being contiguous and sorted in the same order! */ \ + T(Comma, ",", 1) \ + T(Or, "||", 4) \ + T(And, "&&", 5) \ + T(BitOr, "|", 8) \ + T(BitXor, "^", 9) \ + T(BitAnd, "&", 10) \ + T(SHL, "<<", 11) \ + T(SAR, ">>", 11) \ + T(SHR, ">>>", 11) \ + T(Add, "+", 12) \ + T(Sub, "-", 12) \ + T(Mul, "*", 13) \ + T(Div, "/", 13) \ + T(Mod, "%", 13) \ + T(Exp, "**", 14) \ + \ + /* Compare operators sorted by precedence. */ \ + /* IsCompareOp() relies on this block of enum values */ \ + /* being contiguous and sorted in the same order! */ \ + T(Equal, "==", 6) \ + T(NotEqual, "!=", 6) \ + T(LessThan, "<", 7) \ + T(GreaterThan, ">", 7) \ + T(LessThanOrEqual, "<=", 7) \ + T(GreaterThanOrEqual, ">=", 7) \ + K(In, "in", 7) \ + \ + /* Unary operators. */ \ + /* IsUnaryOp() relies on this block of enum values */ \ + /* being contiguous and sorted in the same order! */ \ + T(Not, "!", 0) \ + T(BitNot, "~", 0) \ + T(Inc, "++", 0) \ + T(Dec, "--", 0) \ + K(Delete, "delete", 0) \ + \ + /* Keywords */ \ + K(Anonymous, "anonymous", 0) \ + K(Break, "break", 0) \ + K(Const, "constant", 0) \ + K(Continue, "continue", 0) \ + K(Contract, "contract", 0) \ + K(Default, "default", 0) \ + K(Do, "do", 0) \ + K(Else, "else", 0) \ + K(Enum, "enum", 0) \ + K(Event, "event", 0) \ + K(External, "external", 0) \ + K(For, "for", 0) \ + K(Function, "function", 0) \ + K(If, "if", 0) \ + K(Indexed, "indexed", 0) \ + K(Internal, "internal", 0) \ + K(Import, "import", 0) \ + K(Is, "is", 0) \ + K(Mapping, "mapping", 0) \ + K(Memory, "memory", 0) \ + K(Modifier, "modifier", 0) \ + K(New, "new", 0) \ + K(Public, "public", 0) \ + K(Private, "private", 0) \ + K(Return, "return", 0) \ + K(Returns, "returns", 0) \ + K(Storage, "storage", 0) \ + K(Struct, "struct", 0) \ + K(Var, "var", 0) \ + K(While, "while", 0) \ + \ + /* Ether subdenominations */ \ + K(SubWei, "wei", 0) \ + K(SubSzabo, "szabo", 0) \ + K(SubFinney, "finney", 0) \ + K(SubEther, "ether", 0) \ + K(SubSecond, "seconds", 0) \ + K(SubMinute, "minutes", 0) \ + K(SubHour, "hours", 0) \ + K(SubDay, "days", 0) \ + K(SubWeek, "weeks", 0) \ + K(SubYear, "years", 0) \ + K(After, "after", 0) \ + /* type keywords, keep them in this order, keep int as first keyword + * the implementation in Types.cpp has to be synced to this here */\ + K(Int, "int", 0) \ + K(Int8, "int8", 0) \ + K(Int16, "int16", 0) \ + K(Int24, "int24", 0) \ + K(Int32, "int32", 0) \ + K(Int40, "int40", 0) \ + K(Int48, "int48", 0) \ + K(Int56, "int56", 0) \ + K(Int64, "int64", 0) \ + K(Int72, "int72", 0) \ + K(Int80, "int80", 0) \ + K(Int88, "int88", 0) \ + K(Int96, "int96", 0) \ + K(Int104, "int104", 0) \ + K(Int112, "int112", 0) \ + K(Int120, "int120", 0) \ + K(Int128, "int128", 0) \ + K(Int136, "int136", 0) \ + K(Int144, "int144", 0) \ + K(Int152, "int152", 0) \ + K(Int160, "int160", 0) \ + K(Int168, "int168", 0) \ + K(Int176, "int178", 0) \ + K(Int184, "int184", 0) \ + K(Int192, "int192", 0) \ + K(Int200, "int200", 0) \ + K(Int208, "int208", 0) \ + K(Int216, "int216", 0) \ + K(Int224, "int224", 0) \ + K(Int232, "int232", 0) \ + K(Int240, "int240", 0) \ + K(Int248, "int248", 0) \ + K(Int256, "int256", 0) \ + K(UInt, "uint", 0) \ + K(UInt8, "uint8", 0) \ + K(UInt16, "uint16", 0) \ + K(UInt24, "uint24", 0) \ + K(UInt32, "uint32", 0) \ + K(UInt40, "uint40", 0) \ + K(UInt48, "uint48", 0) \ + K(UInt56, "uint56", 0) \ + K(UInt64, "uint64", 0) \ + K(UInt72, "uint72", 0) \ + K(UInt80, "uint80", 0) \ + K(UInt88, "uint88", 0) \ + K(UInt96, "uint96", 0) \ + K(UInt104, "uint104", 0) \ + K(UInt112, "uint112", 0) \ + K(UInt120, "uint120", 0) \ + K(UInt128, "uint128", 0) \ + K(UInt136, "uint136", 0) \ + K(UInt144, "uint144", 0) \ + K(UInt152, "uint152", 0) \ + K(UInt160, "uint160", 0) \ + K(UInt168, "uint168", 0) \ + K(UInt176, "uint178", 0) \ + K(UInt184, "uint184", 0) \ + K(UInt192, "uint192", 0) \ + K(UInt200, "uint200", 0) \ + K(UInt208, "uint208", 0) \ + K(UInt216, "uint216", 0) \ + K(UInt224, "uint224", 0) \ + K(UInt232, "uint232", 0) \ + K(UInt240, "uint240", 0) \ + K(UInt248, "uint248", 0) \ + K(UInt256, "uint256", 0) \ + K(Bytes1, "bytes1", 0) \ + K(Bytes2, "bytes2", 0) \ + K(Bytes3, "bytes3", 0) \ + K(Bytes4, "bytes4", 0) \ + K(Bytes5, "bytes5", 0) \ + K(Bytes6, "bytes6", 0) \ + K(Bytes7, "bytes7", 0) \ + K(Bytes8, "bytes8", 0) \ + K(Bytes9, "bytes9", 0) \ + K(Bytes10, "bytes10", 0) \ + K(Bytes11, "bytes11", 0) \ + K(Bytes12, "bytes12", 0) \ + K(Bytes13, "bytes13", 0) \ + K(Bytes14, "bytes14", 0) \ + K(Bytes15, "bytes15", 0) \ + K(Bytes16, "bytes16", 0) \ + K(Bytes17, "bytes17", 0) \ + K(Bytes18, "bytes18", 0) \ + K(Bytes19, "bytes19", 0) \ + K(Bytes20, "bytes20", 0) \ + K(Bytes21, "bytes21", 0) \ + K(Bytes22, "bytes22", 0) \ + K(Bytes23, "bytes23", 0) \ + K(Bytes24, "bytes24", 0) \ + K(Bytes25, "bytes25", 0) \ + K(Bytes26, "bytes26", 0) \ + K(Bytes27, "bytes27", 0) \ + K(Bytes28, "bytes28", 0) \ + K(Bytes29, "bytes29", 0) \ + K(Bytes30, "bytes30", 0) \ + K(Bytes31, "bytes31", 0) \ + K(Bytes32, "bytes32", 0) \ + K(Bytes, "bytes", 0) \ + K(Byte, "byte", 0) \ + K(String, "string", 0) \ + K(Address, "address", 0) \ + K(Bool, "bool", 0) \ + K(Real, "real", 0) \ + K(UReal, "ureal", 0) \ + T(TypesEnd, NULL, 0) /* used as type enum end marker */ \ + \ + /* Literals */ \ + K(NullLiteral, "null", 0) \ + K(TrueLiteral, "true", 0) \ + K(FalseLiteral, "false", 0) \ + T(Number, NULL, 0) \ + T(StringLiteral, NULL, 0) \ + T(CommentLiteral, NULL, 0) \ + \ + /* Identifiers (not keywords or future reserved words). */ \ + T(Identifier, NULL, 0) \ + \ + /* Keywords reserved for future. use. */ \ + K(As, "as", 0) \ + K(Case, "case", 0) \ + K(Catch, "catch", 0) \ + K(Final, "final", 0) \ + K(Let, "let", 0) \ + K(Match, "match", 0) \ + K(Of, "of", 0) \ + K(Relocatable, "relocatable", 0) \ + K(Switch, "switch", 0) \ + K(Throw, "throw", 0) \ + K(Try, "try", 0) \ + K(Type, "type", 0) \ + K(TypeOf, "typeof", 0) \ + K(Using, "using", 0) \ + /* Illegal token - not able to scan. */ \ + T(Illegal, "ILLEGAL", 0) \ + \ + /* Scanner-internal use only. */ \ + T(Whitespace, NULL, 0) + + +class Token +{ +public: + // All token values. + // attention! msvc issue: + // http://stackoverflow.com/questions/9567868/compile-errors-after-adding-v8-to-my-project-c2143-c2059 + // @todo: avoid TOKEN_LIST macro +#define T(name, string, precedence) name, + enum Value + { + TOKEN_LIST(T, T) + NUM_TOKENS + }; +#undef T + + // Returns a string corresponding to the C++ token name + // (e.g. "LT" for the token LT). + static char const* getName(Value tok) + { + solAssert(tok < NUM_TOKENS, ""); + return m_name[tok]; + } + + // Predicates + static bool isElementaryTypeName(Value tok) { return Int <= tok && tok < TypesEnd; } + static bool isAssignmentOp(Value tok) { return Assign <= tok && tok <= AssignMod; } + static bool isBinaryOp(Value op) { return Comma <= op && op <= Exp; } + static bool isCommutativeOp(Value op) { return op == BitOr || op == BitXor || op == BitAnd || + op == Add || op == Mul || op == Equal || op == NotEqual; } + static bool isArithmeticOp(Value op) { return Add <= op && op <= Exp; } + static bool isCompareOp(Value op) { return Equal <= op && op <= In; } + + static Value AssignmentToBinaryOp(Value op) + { + solAssert(isAssignmentOp(op) && op != Assign, ""); + return Value(op + (BitOr - AssignBitOr)); + } + + static bool isBitOp(Value op) { return (BitOr <= op && op <= SHR) || op == BitNot; } + static bool isBooleanOp(Value op) { return (Or <= op && op <= And) || op == Not; } + static bool isUnaryOp(Value op) { return (Not <= op && op <= Delete) || op == Add || op == Sub || op == After; } + static bool isCountOp(Value op) { return op == Inc || op == Dec; } + static bool isShiftOp(Value op) { return (SHL <= op) && (op <= SHR); } + static bool isVisibilitySpecifier(Value op) { return isVariableVisibilitySpecifier(op) || op == External; } + static bool isVariableVisibilitySpecifier(Value op) { return op == Public || op == Private || op == Internal; } + static bool isLocationSpecifier(Value op) { return op == Memory || op == Storage; } + static bool isEtherSubdenomination(Value op) { return op == SubWei || op == SubSzabo || op == SubFinney || op == SubEther; } + static bool isTimeSubdenomination(Value op) { return op == SubSecond || op == SubMinute || op == SubHour || op == SubDay || op == SubWeek || op == SubYear; } + + // Returns a string corresponding to the JS token string + // (.e., "<" for the token LT) or NULL if the token doesn't + // have a (unique) string (e.g. an IDENTIFIER). + static char const* toString(Value tok) + { + solAssert(tok < NUM_TOKENS, ""); + return m_string[tok]; + } + + // Returns the precedence > 0 for binary and compare + // operators; returns 0 otherwise. + static int precedence(Value tok) + { + solAssert(tok < NUM_TOKENS, ""); + return m_precedence[tok]; + } + + static Token::Value fromIdentifierOrKeyword(std::string const& _name); + +private: + static char const* const m_name[NUM_TOKENS]; + static char const* const m_string[NUM_TOKENS]; + static int8_t const m_precedence[NUM_TOKENS]; + static char const m_tokenType[NUM_TOKENS]; +}; + +} +} |