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authorchriseth <c@ethdev.com>2015-10-21 06:21:52 +0800
committerchriseth <c@ethdev.com>2015-10-21 06:46:01 +0800
commite3dffb611fe1736e3ffa170e6d8dc4dee17366bd (patch)
treeb2df13e7c4c16c01b6cdc7cd5c15932031185d95 /libsolidity/parsing/Token.h
parentd41f8b7ce702c3b25c48d27e2e895ccdcd04e4e0 (diff)
downloaddexon-solidity-e3dffb611fe1736e3ffa170e6d8dc4dee17366bd.tar.gz
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+// 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/interface/Utils.h>
+#include <libsolidity/interface/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(Library, "library", 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(Throw, "throw", 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(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* name(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];
+};
+
+}
+}
generated by cgit (git 2.34.1) at 2024-11-17 19:06:11 +0800