mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
417 lines
22 KiB
C++
417 lines
22 KiB
C++
// Copyright 2006-2012, the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Modifications as part of solidity under the following license:
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//
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// solidity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// solidity 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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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with solidity. If not, see <http://www.gnu.org/licenses/>.
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#pragma once
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#include <libsolutil/Common.h>
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#include <liblangutil/Exceptions.h>
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#include <liblangutil/UndefMacros.h>
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#include <iosfwd>
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#include <string>
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#include <tuple>
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namespace solidity::langutil
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{
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// TOKEN_LIST takes a list of 3 macros M, all of which satisfy the
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// same signature M(name, string, precedence), where name is the
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// symbolic token name, string is the corresponding syntactic symbol
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// (or nullptr, for literals), and precedence is the precedence (or 0).
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// The parameters are invoked for token categories as follows:
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//
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// T: Non-keyword tokens
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// K: Keyword tokens
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// IGNORE_TOKEN is a convenience macro that can be supplied as
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// an argument (at any position) for a TOKEN_LIST call. It does
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// nothing with tokens belonging to the respective category.
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#define IGNORE_TOKEN(name, string, precedence)
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#define TOKEN_LIST(T, K) \
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/* End of source indicator. */ \
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T(EOS, "EOS", 0) \
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\
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/* Punctuators (ECMA-262, section 7.7, page 15). */ \
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T(LParen, "(", 0) \
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T(RParen, ")", 0) \
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T(LBrack, "[", 0) \
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T(RBrack, "]", 0) \
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T(LBrace, "{", 0) \
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T(RBrace, "}", 0) \
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T(Colon, ":", 0) \
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T(Semicolon, ";", 0) \
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T(Period, ".", 0) \
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T(Conditional, "?", 3) \
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T(DoubleArrow, "=>", 0) \
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T(RightArrow, "->", 0) \
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\
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/* Assignment operators. */ \
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/* IsAssignmentOp() relies on this block of enum values being */ \
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/* contiguous and sorted in the same order!*/ \
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T(Assign, "=", 2) \
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/* The following have to be in exactly the same order as the simple binary operators*/ \
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T(AssignBitOr, "|=", 2) \
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T(AssignBitXor, "^=", 2) \
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T(AssignBitAnd, "&=", 2) \
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T(AssignShl, "<<=", 2) \
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T(AssignSar, ">>=", 2) \
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T(AssignShr, ">>>=", 2) \
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T(AssignAdd, "+=", 2) \
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T(AssignSub, "-=", 2) \
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T(AssignMul, "*=", 2) \
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T(AssignDiv, "/=", 2) \
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T(AssignMod, "%=", 2) \
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\
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/* Binary operators sorted by precedence. */ \
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/* IsBinaryOp() relies on this block of enum values */ \
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/* being contiguous and sorted in the same order! */ \
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T(Comma, ",", 1) \
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T(Or, "||", 4) \
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T(And, "&&", 5) \
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T(BitOr, "|", 8) \
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T(BitXor, "^", 9) \
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T(BitAnd, "&", 10) \
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T(SHL, "<<", 11) \
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T(SAR, ">>", 11) \
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T(SHR, ">>>", 11) \
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T(Add, "+", 12) \
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T(Sub, "-", 12) \
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T(Mul, "*", 13) \
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T(Div, "/", 13) \
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T(Mod, "%", 13) \
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T(Exp, "**", 14) \
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\
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/* Compare operators sorted by precedence. */ \
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/* IsCompareOp() relies on this block of enum values */ \
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/* being contiguous and sorted in the same order! */ \
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T(Equal, "==", 6) \
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T(NotEqual, "!=", 6) \
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T(LessThan, "<", 7) \
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T(GreaterThan, ">", 7) \
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T(LessThanOrEqual, "<=", 7) \
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T(GreaterThanOrEqual, ">=", 7) \
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\
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/* Unary operators. */ \
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/* IsUnaryOp() relies on this block of enum values */ \
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/* being contiguous and sorted in the same order! */ \
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T(Not, "!", 0) \
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T(BitNot, "~", 0) \
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T(Inc, "++", 0) \
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T(Dec, "--", 0) \
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K(Delete, "delete", 0) \
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\
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/* Inline Assembly Operators */ \
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T(AssemblyAssign, ":=", 2) \
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/* Keywords */ \
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K(Abstract, "abstract", 0) \
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K(Anonymous, "anonymous", 0) \
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K(As, "as", 0) \
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K(Assembly, "assembly", 0) \
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K(Break, "break", 0) \
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K(Catch, "catch", 0) \
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K(Constant, "constant", 0) \
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K(Constructor, "constructor", 0) \
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K(Continue, "continue", 0) \
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K(Contract, "contract", 0) \
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K(Do, "do", 0) \
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K(Else, "else", 0) \
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K(Enum, "enum", 0) \
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K(Emit, "emit", 0) \
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K(Event, "event", 0) \
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K(External, "external", 0) \
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K(Fallback, "fallback", 0) \
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K(For, "for", 0) \
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K(Function, "function", 0) \
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K(Hex, "hex", 0) \
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K(If, "if", 0) \
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K(Indexed, "indexed", 0) \
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K(Interface, "interface", 0) \
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K(Internal, "internal", 0) \
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K(Immutable, "immutable", 0) \
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K(Import, "import", 0) \
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K(Is, "is", 0) \
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K(Library, "library", 0) \
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K(Mapping, "mapping", 0) \
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K(Memory, "memory", 0) \
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K(Modifier, "modifier", 0) \
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K(New, "new", 0) \
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K(Override, "override", 0) \
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K(Payable, "payable", 0) \
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K(Public, "public", 0) \
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K(Pragma, "pragma", 0) \
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K(Private, "private", 0) \
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K(Pure, "pure", 0) \
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K(Receive, "receive", 0) \
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K(Return, "return", 0) \
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K(Returns, "returns", 0) \
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K(Storage, "storage", 0) \
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K(CallData, "calldata", 0) \
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K(Struct, "struct", 0) \
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K(Throw, "throw", 0) \
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K(Try, "try", 0) \
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K(Type, "type", 0) \
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K(Unchecked, "unchecked", 0) \
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K(Unicode, "unicode", 0) \
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K(Using, "using", 0) \
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K(View, "view", 0) \
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K(Virtual, "virtual", 0) \
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K(While, "while", 0) \
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\
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/* Ether subdenominations */ \
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K(SubWei, "wei", 0) \
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K(SubGwei, "gwei", 0) \
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K(SubEther, "ether", 0) \
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K(SubSecond, "seconds", 0) \
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K(SubMinute, "minutes", 0) \
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K(SubHour, "hours", 0) \
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K(SubDay, "days", 0) \
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K(SubWeek, "weeks", 0) \
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K(SubYear, "years", 0) \
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/* type keywords*/ \
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K(Int, "int", 0) \
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K(UInt, "uint", 0) \
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K(Bytes, "bytes", 0) \
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K(String, "string", 0) \
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K(Address, "address", 0) \
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K(Bool, "bool", 0) \
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K(Fixed, "fixed", 0) \
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K(UFixed, "ufixed", 0) \
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T(IntM, "intM", 0) \
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T(UIntM, "uintM", 0) \
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T(BytesM, "bytesM", 0) \
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T(FixedMxN, "fixedMxN", 0) \
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T(UFixedMxN, "ufixedMxN", 0) \
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T(TypesEnd, nullptr, 0) /* used as type enum end marker */ \
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\
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/* Literals */ \
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K(TrueLiteral, "true", 0) \
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K(FalseLiteral, "false", 0) \
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T(Number, nullptr, 0) \
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T(StringLiteral, nullptr, 0) \
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T(UnicodeStringLiteral, nullptr, 0) \
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T(HexStringLiteral, nullptr, 0) \
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T(CommentLiteral, nullptr, 0) \
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\
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/* Identifiers (not keywords or future reserved words). */ \
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T(Identifier, nullptr, 0) \
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\
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/* Keywords reserved for future use. */ \
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K(After, "after", 0) \
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K(Alias, "alias", 0) \
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K(Apply, "apply", 0) \
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K(Auto, "auto", 0) \
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K(Byte, "byte", 0) \
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K(Case, "case", 0) \
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K(CopyOf, "copyof", 0) \
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K(Default, "default", 0) \
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K(Define, "define", 0) \
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K(Final, "final", 0) \
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K(Implements, "implements", 0) \
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K(In, "in", 0) \
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K(Inline, "inline", 0) \
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K(Let, "let", 0) \
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K(Macro, "macro", 0) \
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K(Match, "match", 0) \
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K(Mutable, "mutable", 0) \
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K(NullLiteral, "null", 0) \
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K(Of, "of", 0) \
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K(Partial, "partial", 0) \
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K(Promise, "promise", 0) \
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K(Reference, "reference", 0) \
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K(Relocatable, "relocatable", 0) \
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K(Sealed, "sealed", 0) \
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K(Sizeof, "sizeof", 0) \
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K(Static, "static", 0) \
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K(Supports, "supports", 0) \
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K(Switch, "switch", 0) \
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K(Typedef, "typedef", 0) \
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K(TypeOf, "typeof", 0) \
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K(Var, "var", 0) \
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\
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/* Yul-specific tokens, but not keywords. */ \
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T(Leave, "leave", 0) \
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\
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/* Illegal token - not able to scan. */ \
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T(Illegal, "ILLEGAL", 0) \
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\
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/* Scanner-internal use only. */ \
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T(Whitespace, nullptr, 0)
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// All token values.
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// attention! msvc issue:
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// http://stackoverflow.com/questions/9567868/compile-errors-after-adding-v8-to-my-project-c2143-c2059
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// @todo: avoid TOKEN_LIST macro
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enum class Token : unsigned int {
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#define T(name, string, precedence) name,
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TOKEN_LIST(T, T)
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NUM_TOKENS
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#undef T
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};
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namespace TokenTraits
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{
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constexpr size_t count() { return static_cast<size_t>(Token::NUM_TOKENS); }
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// Predicates
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constexpr bool isElementaryTypeName(Token tok) { return Token::Int <= tok && tok < Token::TypesEnd; }
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constexpr bool isAssignmentOp(Token tok) { return Token::Assign <= tok && tok <= Token::AssignMod; }
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constexpr bool isBinaryOp(Token op) { return Token::Comma <= op && op <= Token::Exp; }
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constexpr bool isCommutativeOp(Token op) { return op == Token::BitOr || op == Token::BitXor || op == Token::BitAnd ||
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op == Token::Add || op == Token::Mul || op == Token::Equal || op == Token::NotEqual; }
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constexpr bool isArithmeticOp(Token op) { return Token::Add <= op && op <= Token::Exp; }
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constexpr bool isCompareOp(Token op) { return Token::Equal <= op && op <= Token::GreaterThanOrEqual; }
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constexpr bool isBitOp(Token op) { return (Token::BitOr <= op && op <= Token::BitAnd) || op == Token::BitNot; }
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constexpr bool isBooleanOp(Token op) { return (Token::Or <= op && op <= Token::And) || op == Token::Not; }
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constexpr bool isUnaryOp(Token op) { return (Token::Not <= op && op <= Token::Delete) || op == Token::Add || op == Token::Sub; }
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constexpr bool isCountOp(Token op) { return op == Token::Inc || op == Token::Dec; }
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constexpr bool isShiftOp(Token op) { return (Token::SHL <= op) && (op <= Token::SHR); }
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constexpr bool isVariableVisibilitySpecifier(Token op) { return op == Token::Public || op == Token::Private || op == Token::Internal; }
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constexpr bool isVisibilitySpecifier(Token op) { return isVariableVisibilitySpecifier(op) || op == Token::External; }
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constexpr bool isLocationSpecifier(Token op) { return op == Token::Memory || op == Token::Storage || op == Token::CallData; }
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constexpr bool isStateMutabilitySpecifier(Token op)
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{
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return op == Token::Pure || op == Token::View || op == Token::Payable;
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}
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constexpr bool isEtherSubdenomination(Token op) { return op >= Token::SubWei && op <= Token::SubEther; }
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constexpr bool isTimeSubdenomination(Token op) { return op == Token::SubSecond || op == Token::SubMinute || op == Token::SubHour || op == Token::SubDay || op == Token::SubWeek || op == Token::SubYear; }
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constexpr bool isReservedKeyword(Token op) { return (Token::After <= op && op <= Token::Var); }
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constexpr bool isYulKeyword(Token tok)
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{
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return tok == Token::Function || tok == Token::Let || tok == Token::If || tok == Token::Switch || tok == Token::Case ||
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tok == Token::Default || tok == Token::For || tok == Token::Break || tok == Token::Continue || tok == Token::Leave ||
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tok == Token::TrueLiteral || tok == Token::FalseLiteral || tok == Token::HexStringLiteral || tok == Token::Hex;
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}
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bool isYulKeyword(std::string const& _literal);
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inline Token AssignmentToBinaryOp(Token op)
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{
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solAssert(isAssignmentOp(op) && op != Token::Assign, "");
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return static_cast<Token>(static_cast<int>(op) + (static_cast<int>(Token::BitOr) - static_cast<int>(Token::AssignBitOr)));
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}
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// @returns the precedence > 0 for binary and compare
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// operators; returns 0 otherwise.
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constexpr int precedence(Token tok)
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{
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int8_t constexpr precs[TokenTraits::count()] =
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{
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#define T(name, string, precedence) precedence,
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TOKEN_LIST(T, T)
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#undef T
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};
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return precs[static_cast<size_t>(tok)];
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}
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constexpr bool hasExpHighestPrecedence()
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{
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constexpr int expPrecedence = TokenTraits::precedence(Token::Exp);
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static_assert(expPrecedence == 14, "Exp precedence changed.");
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#define T(name, string, precedence) ((Token::name == Token::Exp) || precedence < expPrecedence) &&
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return
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TOKEN_LIST(T, T)
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true;
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#undef T
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}
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std::tuple<Token, unsigned int, unsigned int> fromIdentifierOrKeyword(std::string const& _literal);
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// @returns a string corresponding to the C++ token name
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// (e.g. "LT" for the token LT).
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char const* name(Token tok);
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// @returns a string corresponding to the JS token string
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// (.e., "<" for the token LT) or nullptr if the token doesn't
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// have a (unique) string (e.g. an IDENTIFIER).
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char const* toString(Token tok);
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std::string friendlyName(Token tok);
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}
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inline std::ostream& operator<<(std::ostream& os, Token token)
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{
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os << TokenTraits::friendlyName(token);
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return os;
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}
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class ElementaryTypeNameToken
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{
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public:
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ElementaryTypeNameToken(Token _token, unsigned const& _firstNumber, unsigned const& _secondNumber)
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{
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assertDetails(_token, _firstNumber, _secondNumber);
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}
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unsigned int firstNumber() const { return m_firstNumber; }
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unsigned int secondNumber() const { return m_secondNumber; }
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Token token() const { return m_token; }
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///if tokValue is set to true, then returns the actual token type name, otherwise, returns full type
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std::string toString(bool const& tokenValue = false) const
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{
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std::string name = TokenTraits::toString(m_token);
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if (tokenValue || (firstNumber() == 0 && secondNumber() == 0))
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return name;
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solAssert(name.size() >= 3, "Token name size should be greater than 3. Should not reach here.");
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if (m_token == Token::FixedMxN || m_token == Token::UFixedMxN)
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return name.substr(0, name.size() - 3) + std::to_string(m_firstNumber) + "x" + std::to_string(m_secondNumber);
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else
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return name.substr(0, name.size() - 1) + std::to_string(m_firstNumber);
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}
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private:
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Token m_token;
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unsigned int m_firstNumber;
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unsigned int m_secondNumber;
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/// throws if type is not properly sized
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void assertDetails(Token _baseType, unsigned const& _first, unsigned const& _second);
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};
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}
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