mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
311 lines
12 KiB
C++
311 lines
12 KiB
C++
/*
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This file is part of solidity.
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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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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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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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*/
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/**
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* @author Christian <c@ethdev.com>
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* @author Gav Wood <g@ethdev.com>
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* @date 2014
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* Full-stack compiler that converts a source code string to bytecode.
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*/
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#pragma once
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#include <ostream>
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#include <string>
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#include <memory>
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#include <vector>
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#include <functional>
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#include <boost/noncopyable.hpp>
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#include <boost/filesystem.hpp>
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#include <json/json.h>
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#include <libdevcore/Common.h>
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#include <libdevcore/FixedHash.h>
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#include <libevmasm/SourceLocation.h>
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#include <libevmasm/LinkerObject.h>
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#include <libsolidity/interface/ErrorReporter.h>
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#include <libsolidity/interface/ReadFile.h>
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namespace dev
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{
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namespace eth
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{
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class Assembly;
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class AssemblyItem;
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using AssemblyItems = std::vector<AssemblyItem>;
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}
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namespace solidity
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{
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// forward declarations
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class Scanner;
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class ASTNode;
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class ContractDefinition;
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class FunctionDefinition;
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class SourceUnit;
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class Compiler;
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class GlobalContext;
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class Natspec;
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class Error;
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class DeclarationContainer;
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/**
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* Easy to use and self-contained Solidity compiler with as few header dependencies as possible.
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* It holds state and can be used to either step through the compilation stages (and abort e.g.
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* before compilation to bytecode) or run the whole compilation in one call.
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*/
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class CompilerStack: boost::noncopyable
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{
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public:
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enum State {
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Empty,
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SourcesSet,
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ParsingSuccessful,
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AnalysisSuccessful,
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CompilationSuccessful
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};
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/// Creates a new compiler stack.
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/// @param _readFile callback to used to read files for import statements. Must return
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/// and must not emit exceptions.
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explicit CompilerStack(ReadCallback::Callback const& _readFile = ReadCallback::Callback()):
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m_readFile(_readFile),
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m_errorList(),
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m_errorReporter(m_errorList) {}
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/// @returns the list of errors that occured during parsing and type checking.
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ErrorList const& errors() const { return m_errorReporter.errors(); }
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/// @returns the current state.
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State state() const { return m_stackState; }
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/// Resets the compiler to a state where the sources are not parsed or even removed.
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/// Sets the state to SourcesSet if @a _keepSources is true, otherwise to Empty.
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/// All settings, with the exception of remappings, are reset.
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void reset(bool _keepSources = false);
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/// Sets path remappings in the format "context:prefix=target"
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void setRemappings(std::vector<std::string> const& _remappings);
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/// Sets library addresses. Addresses are cleared iff @a _libraries is missing.
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/// Will not take effect before running compile.
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void setLibraries(std::map<std::string, h160> const& _libraries = std::map<std::string, h160>{})
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{
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m_libraries = _libraries;
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}
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/// Changes the optimiser settings.
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/// Will not take effect before running compile.
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void setOptimiserSettings(bool _optimize, unsigned _runs = 200)
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{
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m_optimize = _optimize;
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m_optimizeRuns = _runs;
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}
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/// Adds a source object (e.g. file) to the parser. After this, parse has to be called again.
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/// @returns true if a source object by the name already existed and was replaced.
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bool addSource(std::string const& _name, std::string const& _content, bool _isLibrary = false);
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/// Parses all source units that were added
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/// @returns false on error.
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bool parse();
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/// Performs the analysis steps (imports, scopesetting, syntaxCheck, referenceResolving,
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/// typechecking, staticAnalysis) on previously set sources
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/// @returns false on error.
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bool analyze();
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/// Parses and analyzes all source units that were added
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/// @returns false on error.
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bool parseAndAnalyze();
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/// @returns a list of the contract names in the sources.
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std::vector<std::string> contractNames() const;
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/// Compiles the source units that were previously added and parsed.
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/// @returns false on error.
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bool compile();
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/// @returns the list of sources (paths) used
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std::vector<std::string> sourceNames() const;
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/// @returns a mapping assigning each source name its index inside the vector returned
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/// by sourceNames().
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std::map<std::string, unsigned> sourceIndices() const;
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/// @returns the previously used scanner, useful for counting lines during error reporting.
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Scanner const& scanner(std::string const& _sourceName = "") const;
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/// @returns the parsed source unit with the supplied name.
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SourceUnit const& ast(std::string const& _sourceName = "") const;
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/// Helper function for logs printing. Do only use in error cases, it's quite expensive.
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/// line and columns are numbered starting from 1 with following order:
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/// start line, start column, end line, end column
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std::tuple<int, int, int, int> positionFromSourceLocation(SourceLocation const& _sourceLocation) const;
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/// @returns either the contract's name or a mixture of its name and source file, sanitized for filesystem use
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std::string const filesystemFriendlyName(std::string const& _contractName) const;
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/// @returns the assembled object for a contract.
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eth::LinkerObject const& object(std::string const& _contractName = "") const;
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/// @returns the runtime object for the contract.
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eth::LinkerObject const& runtimeObject(std::string const& _contractName = "") const;
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/// @returns the bytecode of a contract that uses an already deployed contract via DELEGATECALL.
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/// The returned bytes will contain a sequence of 20 bytes of the format "XXX...XXX" which have to
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/// substituted by the actual address. Note that this sequence starts end ends in three X
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/// characters but can contain anything in between.
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eth::LinkerObject const& cloneObject(std::string const& _contractName = "") const;
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/// @returns normal contract assembly items
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eth::AssemblyItems const* assemblyItems(std::string const& _contractName = "") const;
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/// @returns runtime contract assembly items
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eth::AssemblyItems const* runtimeAssemblyItems(std::string const& _contractName = "") const;
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/// @returns the string that provides a mapping between bytecode and sourcecode or a nullptr
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/// if the contract does not (yet) have bytecode.
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std::string const* sourceMapping(std::string const& _contractName = "") const;
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/// @returns the string that provides a mapping between runtime bytecode and sourcecode.
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/// if the contract does not (yet) have bytecode.
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std::string const* runtimeSourceMapping(std::string const& _contractName = "") const;
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/// Streams a verbose version of the assembly to @a _outStream.
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/// @arg _sourceCodes is the map of input files to source code strings
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/// @arg _inJsonFromat shows whether the out should be in Json format
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/// Prerequisite: Successful compilation.
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Json::Value streamAssembly(std::ostream& _outStream, std::string const& _contractName = "", StringMap _sourceCodes = StringMap(), bool _inJsonFormat = false) const;
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/// @returns a JSON representing the contract ABI.
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/// Prerequisite: Successful call to parse or compile.
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Json::Value const& contractABI(std::string const& _contractName = "") const;
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/// @returns a JSON representing the contract's user documentation.
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/// Prerequisite: Successful call to parse or compile.
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Json::Value const& natspecUser(std::string const& _contractName) const;
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/// @returns a JSON representing the contract's developer documentation.
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/// Prerequisite: Successful call to parse or compile.
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Json::Value const& natspecDev(std::string const& _contractName) const;
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/// @returns a JSON representing a map of method identifiers (hashes) to function names.
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Json::Value methodIdentifiers(std::string const& _contractName) const;
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/// @returns the Contract Metadata
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std::string const& metadata(std::string const& _contractName) const;
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void useMetadataLiteralSources(bool _metadataLiteralSources) { m_metadataLiteralSources = _metadataLiteralSources; }
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/// @returns a JSON representing the estimated gas usage for contract creation, internal and external functions
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Json::Value gasEstimates(std::string const& _contractName) const;
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private:
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/**
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* Information pertaining to one source unit, filled gradually during parsing and compilation.
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*/
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struct Source
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{
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std::shared_ptr<Scanner> scanner;
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std::shared_ptr<SourceUnit> ast;
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bool isLibrary = false;
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void reset() { scanner.reset(); ast.reset(); }
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};
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struct Contract
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{
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ContractDefinition const* contract = nullptr;
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std::shared_ptr<Compiler> compiler;
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eth::LinkerObject object;
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eth::LinkerObject runtimeObject;
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eth::LinkerObject cloneObject;
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std::string metadata; ///< The metadata json that will be hashed into the chain.
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mutable std::unique_ptr<Json::Value const> abi;
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mutable std::unique_ptr<Json::Value const> userDocumentation;
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mutable std::unique_ptr<Json::Value const> devDocumentation;
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mutable std::unique_ptr<std::string const> sourceMapping;
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mutable std::unique_ptr<std::string const> runtimeSourceMapping;
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};
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/// Loads the missing sources from @a _ast (named @a _path) using the callback
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/// @a m_readFile and stores the absolute paths of all imports in the AST annotations.
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/// @returns the newly loaded sources.
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StringMap loadMissingSources(SourceUnit const& _ast, std::string const& _path);
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std::string applyRemapping(std::string const& _path, std::string const& _context);
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void resolveImports();
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/// @returns the absolute path corresponding to @a _path relative to @a _reference.
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std::string absolutePath(std::string const& _path, std::string const& _reference) const;
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/// Helper function to return path converted strings.
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std::string sanitizePath(std::string const& _path) const { return boost::filesystem::path(_path).generic_string(); }
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/// Compile a single contract and put the result in @a _compiledContracts.
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void compileContract(
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ContractDefinition const& _contract,
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std::map<ContractDefinition const*, eth::Assembly const*>& _compiledContracts
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);
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void link();
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Contract const& contract(std::string const& _contractName = "") const;
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Source const& source(std::string const& _sourceName = "") const;
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/// @returns the parsed contract with the supplied name. Throws an exception if the contract
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/// does not exist.
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ContractDefinition const& contractDefinition(std::string const& _contractName) const;
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std::string createMetadata(Contract const& _contract) const;
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std::string computeSourceMapping(eth::AssemblyItems const& _items) const;
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Json::Value const& contractABI(Contract const&) const;
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Json::Value const& natspecUser(Contract const&) const;
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Json::Value const& natspecDev(Contract const&) const;
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/// @returns the offset of the entry point of the given function into the list of assembly items
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/// or zero if it is not found or does not exist.
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size_t functionEntryPoint(
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std::string const& _contractName,
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FunctionDefinition const& _function
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) const;
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struct Remapping
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{
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std::string context;
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std::string prefix;
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std::string target;
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};
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ReadCallback::Callback m_readFile;
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ReadCallback::Callback m_smtQuery;
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bool m_optimize = false;
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unsigned m_optimizeRuns = 200;
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std::map<std::string, h160> m_libraries;
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/// list of path prefix remappings, e.g. mylibrary: github.com/ethereum = /usr/local/ethereum
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/// "context:prefix=target"
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std::vector<Remapping> m_remappings;
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std::map<std::string const, Source> m_sources;
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std::shared_ptr<GlobalContext> m_globalContext;
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std::map<ASTNode const*, std::shared_ptr<DeclarationContainer>> m_scopes;
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std::vector<Source const*> m_sourceOrder;
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std::map<std::string const, Contract> m_contracts;
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ErrorList m_errorList;
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ErrorReporter m_errorReporter;
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bool m_metadataLiteralSources = false;
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State m_stackState = Empty;
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};
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}
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}
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