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-rw-r--r--libsolidity/inlineasm/AsmStack.h92
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diff --git a/libsolidity/inlineasm/AsmStack.h b/libsolidity/inlineasm/AsmStack.h
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--- a/libsolidity/inlineasm/AsmStack.h
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-/*
- This file is part of solidity.
-
- solidity 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.
-
- solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
-*/
-/**
- * @author Christian <c@ethdev.com>
- * @date 2016
- * Full-stack Solidity inline assember.
- */
-
-#pragma once
-
-#include <libsolidity/interface/Exceptions.h>
-
-#include <string>
-#include <functional>
-
-namespace dev
-{
-namespace eth
-{
-class Assembly;
-}
-namespace solidity
-{
-class Scanner;
-namespace assembly
-{
-struct Block;
-struct Identifier;
-
-enum class IdentifierContext { LValue, RValue };
-
-/// Object that is used to resolve references and generate code for access to identifiers external
-/// to inline assembly (not used in standalone assembly mode).
-struct ExternalIdentifierAccess
-{
- using Resolver = std::function<size_t(assembly::Identifier const&, IdentifierContext)>;
- /// Resolve a an external reference given by the identifier in the given context.
- /// @returns the size of the value (number of stack slots) or size_t(-1) if not found.
- Resolver resolve;
- using CodeGenerator = std::function<void(assembly::Identifier const&, IdentifierContext, eth::Assembly&)>;
- /// Generate code for retrieving the value (rvalue context) or storing the value (lvalue context)
- /// of an identifier. The code should be appended to the assembly. In rvalue context, the value is supposed
- /// to be put onto the stack, in lvalue context, the value is assumed to be at the top of the stack.
- CodeGenerator generateCode;
-};
-
-class InlineAssemblyStack
-{
-public:
- /// Parse the given inline assembly chunk starting with `{` and ending with the corresponding `}`.
- /// @return false or error.
- bool parse(
- std::shared_ptr<Scanner> const& _scanner,
- ExternalIdentifierAccess::Resolver const& _externalIdentifierResolver = ExternalIdentifierAccess::Resolver()
- );
- /// Converts the parser result back into a string form (not necessarily the same form
- /// as the source form, but it should parse into the same parsed form again).
- std::string toString();
-
- eth::Assembly assemble();
-
- /// Parse and assemble a string in one run - for use in Solidity code generation itself.
- bool parseAndAssemble(
- std::string const& _input,
- eth::Assembly& _assembly,
- ExternalIdentifierAccess const& _identifierAccess = ExternalIdentifierAccess()
- );
-
- ErrorList const& errors() const { return m_errors; }
-
-private:
- std::shared_ptr<Block> m_parserResult;
- ErrorList m_errors;
-};
-
-}
-}
-}