mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
396 lines
22 KiB
C++
396 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 cpp-ethereum under the following license:
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//
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// cpp-ethereum 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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// cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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#pragma once
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#include <libdevcore/Common.h>
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#include <libdevcore/Log.h>
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#include <libsolidity/Exceptions.h>
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namespace dev
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{
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namespace solidity
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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 NULL, 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(ARROW, "=>", 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(ASSIGN_BIT_OR, "|=", 2) \
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T(ASSIGN_BIT_XOR, "^=", 2) \
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T(ASSIGN_BIT_AND, "&=", 2) \
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T(ASSIGN_SHL, "<<=", 2) \
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T(ASSIGN_SAR, ">>=", 2) \
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T(ASSIGN_SHR, ">>>=", 2) \
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T(ASSIGN_ADD, "+=", 2) \
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T(ASSIGN_SUB, "-=", 2) \
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T(ASSIGN_MUL, "*=", 2) \
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T(ASSIGN_DIV, "/=", 2) \
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T(ASSIGN_MOD, "%=", 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(BIT_OR, "|", 6) \
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T(BIT_XOR, "^", 7) \
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T(BIT_AND, "&", 8) \
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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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\
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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(EQ, "==", 9) \
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T(NE, "!=", 9) \
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T(LT, "<", 10) \
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T(GT, ">", 10) \
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T(LTE, "<=", 10) \
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T(GTE, ">=", 10) \
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K(IN, "in", 10) \
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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(BIT_NOT, "~", 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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/* Keywords */ \
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K(BREAK, "break", 0) \
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K(CASE, "case", 0) \
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K(CONST, "const", 0) \
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K(CONTINUE, "continue", 0) \
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K(CONTRACT, "contract", 0) \
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K(DEFAULT, "default", 0) \
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K(DO, "do", 0) \
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K(ELSE, "else", 0) \
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K(EXTENDS, "extends", 0) \
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K(FOR, "for", 0) \
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K(FUNCTION, "function", 0) \
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K(IF, "if", 0) \
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K(IMPORT, "import", 0) \
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K(MAPPING, "mapping", 0) \
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K(NEW, "new", 0) \
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K(PUBLIC, "public", 0) \
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K(PRIVATE, "private", 0) \
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K(RETURN, "return", 0) \
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K(RETURNS, "returns", 0) \
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K(STRUCT, "struct", 0) \
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K(SWITCH, "switch", 0) \
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K(VAR, "var", 0) \
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K(WHILE, "while", 0) \
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\
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\
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/* type keywords, keep them in this order, keep int as first keyword
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* the implementation in Types.cpp has to be synced to this here
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* TODO more to be added */ \
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K(INT, "int", 0) \
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K(INT8, "int8", 0) \
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K(INT16, "int16", 0) \
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K(INT24, "int24", 0) \
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K(INT32, "int32", 0) \
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K(INT40, "int40", 0) \
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K(INT48, "int48", 0) \
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K(INT56, "int56", 0) \
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K(INT64, "int64", 0) \
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K(INT72, "int72", 0) \
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K(INT80, "int80", 0) \
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K(INT88, "int88", 0) \
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K(INT96, "int96", 0) \
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K(INT104, "int104", 0) \
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K(INT112, "int112", 0) \
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K(INT120, "int120", 0) \
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K(INT128, "int128", 0) \
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K(INT136, "int136", 0) \
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K(INT144, "int144", 0) \
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K(INT152, "int152", 0) \
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K(INT160, "int160", 0) \
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K(INT168, "int168", 0) \
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K(INT176, "int178", 0) \
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K(INT184, "int184", 0) \
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K(INT192, "int192", 0) \
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K(INT200, "int200", 0) \
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K(INT208, "int208", 0) \
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K(INT216, "int216", 0) \
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K(INT224, "int224", 0) \
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K(INT232, "int232", 0) \
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K(INT240, "int240", 0) \
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K(INT248, "int248", 0) \
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K(INT256, "int256", 0) \
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K(UINT, "uint", 0) \
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K(UINT8, "uint8", 0) \
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K(UINT16, "uint16", 0) \
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K(UINT24, "uint24", 0) \
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K(UINT32, "uint32", 0) \
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K(UINT40, "uint40", 0) \
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K(UINT48, "uint48", 0) \
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K(UINT56, "uint56", 0) \
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K(UINT64, "uint64", 0) \
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K(UINT72, "uint72", 0) \
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K(UINT80, "uint80", 0) \
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K(UINT88, "uint88", 0) \
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K(UINT96, "uint96", 0) \
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K(UINT104, "uint104", 0) \
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K(UINT112, "uint112", 0) \
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K(UINT120, "uint120", 0) \
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K(UINT128, "uint128", 0) \
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K(UINT136, "uint136", 0) \
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K(UINT144, "uint144", 0) \
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K(UINT152, "uint152", 0) \
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K(UINT160, "uint160", 0) \
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K(UINT168, "uint168", 0) \
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K(UINT176, "uint178", 0) \
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K(UINT184, "uint184", 0) \
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K(UINT192, "uint192", 0) \
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K(UINT200, "uint200", 0) \
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K(UINT208, "uint208", 0) \
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K(UINT216, "uint216", 0) \
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K(UINT224, "uint224", 0) \
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K(UINT232, "uint232", 0) \
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K(UINT240, "uint240", 0) \
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K(UINT248, "uint248", 0) \
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K(UINT256, "uint256", 0) \
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K(HASH, "hash", 0) \
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K(HASH8, "hash8", 0) \
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K(HASH16, "hash16", 0) \
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K(HASH24, "hash24", 0) \
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K(HASH32, "hash32", 0) \
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K(HASH40, "hash40", 0) \
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K(HASH48, "hash48", 0) \
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K(HASH56, "hash56", 0) \
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K(HASH64, "hash64", 0) \
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K(HASH72, "hash72", 0) \
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K(HASH80, "hash80", 0) \
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K(HASH88, "hash88", 0) \
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K(HASH96, "hash96", 0) \
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K(HASH104, "hash104", 0) \
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K(HASH112, "hash112", 0) \
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K(HASH120, "hash120", 0) \
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K(HASH128, "hash128", 0) \
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K(HASH136, "hash136", 0) \
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K(HASH144, "hash144", 0) \
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K(HASH152, "hash152", 0) \
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K(HASH160, "hash160", 0) \
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K(HASH168, "hash168", 0) \
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K(HASH176, "hash178", 0) \
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K(HASH184, "hash184", 0) \
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K(HASH192, "hash192", 0) \
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K(HASH200, "hash200", 0) \
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K(HASH208, "hash208", 0) \
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K(HASH216, "hash216", 0) \
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K(HASH224, "hash224", 0) \
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K(HASH232, "hash232", 0) \
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K(HASH240, "hash240", 0) \
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K(HASH248, "hash248", 0) \
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K(HASH256, "hash256", 0) \
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K(ADDRESS, "address", 0) \
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K(BOOL, "bool", 0) \
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K(STRING_TYPE, "string", 0) \
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K(STRING0, "string0", 0) \
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K(STRING1, "string1", 0) \
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K(STRING2, "string2", 0) \
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K(STRING3, "string3", 0) \
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K(STRING4, "string4", 0) \
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K(STRING5, "string5", 0) \
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K(STRING6, "string6", 0) \
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K(STRING7, "string7", 0) \
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K(STRING8, "string8", 0) \
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K(STRING9, "string9", 0) \
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K(STRING10, "string10", 0) \
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K(STRING11, "string11", 0) \
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K(STRING12, "string12", 0) \
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K(STRING13, "string13", 0) \
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K(STRING14, "string14", 0) \
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K(STRING15, "string15", 0) \
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K(STRING16, "string16", 0) \
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K(STRING17, "string17", 0) \
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K(STRING18, "string18", 0) \
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K(STRING19, "string19", 0) \
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K(STRING20, "string20", 0) \
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K(STRING21, "string21", 0) \
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K(STRING22, "string22", 0) \
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K(STRING23, "string23", 0) \
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K(STRING24, "string24", 0) \
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K(STRING25, "string25", 0) \
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K(STRING26, "string26", 0) \
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K(STRING27, "string27", 0) \
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K(STRING28, "string28", 0) \
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K(STRING29, "string29", 0) \
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K(STRING30, "string30", 0) \
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K(STRING31, "string31", 0) \
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K(STRING32, "string32", 0) \
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K(TEXT, "text", 0) \
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K(REAL, "real", 0) \
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K(UREAL, "ureal", 0) \
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T(TYPES_END, NULL, 0) /* used as type enum end marker */ \
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\
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/* Literals */ \
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K(NULL_LITERAL, "null", 0) \
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K(TRUE_LITERAL, "true", 0) \
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K(FALSE_LITERAL, "false", 0) \
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T(NUMBER, NULL, 0) \
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T(STRING_LITERAL, NULL, 0) \
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T(COMMENT_LITERAL, NULL, 0) \
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\
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/* Identifiers (not keywords or future reserved words). */ \
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T(IDENTIFIER, NULL, 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, NULL, 0)
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class Token
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{
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public:
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// All token values.
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#define T(name, string, precedence) name,
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enum Value
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{
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TOKEN_LIST(T, T)
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NUM_TOKENS
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};
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#undef T
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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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static char const* getName(Value tok)
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{
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if (asserts(tok < NUM_TOKENS))
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BOOST_THROW_EXCEPTION(InternalCompilerError());
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return m_name[tok];
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}
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// Predicates
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static bool isElementaryTypeName(Value tok) { return INT <= tok && tok < TYPES_END; }
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static bool isAssignmentOp(Value tok) { return ASSIGN <= tok && tok <= ASSIGN_MOD; }
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static bool isBinaryOp(Value op) { return COMMA <= op && op <= MOD; }
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static bool isArithmeticOp(Value op) { return ADD <= op && op <= MOD; }
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static bool isCompareOp(Value op) { return EQ <= op && op <= IN; }
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static Value AssignmentToBinaryOp(Value op)
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{
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if (asserts(isAssignmentOp(op) && op != ASSIGN))
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BOOST_THROW_EXCEPTION(InternalCompilerError());
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return Token::Value(op + (BIT_OR - ASSIGN_BIT_OR));
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}
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static bool isBitOp(Value op) { return (BIT_OR <= op && op <= SHR) || op == BIT_NOT; }
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static bool isUnaryOp(Value op) { return (NOT <= op && op <= DELETE) || op == ADD || op == SUB; }
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static bool isCountOp(Value op) { return op == INC || op == DEC; }
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static bool isShiftOp(Value op) { return (SHL <= op) && (op <= SHR); }
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// Returns a string corresponding to the JS token string
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// (.e., "<" for the token LT) or NULL if the token doesn't
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// have a (unique) string (e.g. an IDENTIFIER).
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static char const* toString(Value tok)
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{
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if (asserts(tok < NUM_TOKENS))
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BOOST_THROW_EXCEPTION(InternalCompilerError());
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return m_string[tok];
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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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static int precedence(Value tok)
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{
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if (asserts(tok < NUM_TOKENS))
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BOOST_THROW_EXCEPTION(InternalCompilerError());
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return m_precedence[tok];
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}
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private:
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static char const* const m_name[NUM_TOKENS];
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static char const* const m_string[NUM_TOKENS];
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static int8_t const m_precedence[NUM_TOKENS];
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static char const m_tokenType[NUM_TOKENS];
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};
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}
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}
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