Rename EWasmCodeTransform to WasmCodeTransform

2023-10-03 13:03:40 +00:00 · 2019-12-18 15:59:31 +00:00
parent f9a76f8c9b
commit cec45a7df5
4 changed files with 36 additions and 36 deletions
@@ -0,0 +1,101 @@
+/*
+	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/>.
+*/
+/**
+ * Common code generator for translating Yul / inline assembly to Wasm.
+ */
+
+#pragma once
+
+#include <libyul/backends/wasm/WasmAST.h>
+#include <libyul/AsmDataForward.h>
+#include <libyul/Dialect.h>
+#include <libyul/optimiser/NameDispenser.h>
+
+#include <stack>
+#include <map>
+
+namespace yul
+{
+struct AsmAnalysisInfo;
+
+class WasmCodeTransform
+{
+public:
+	static wasm::Module run(Dialect const& _dialect, yul::Block const& _ast);
+
+public:
+	wasm::Expression operator()(yul::Literal const& _literal);
+	wasm::Expression operator()(yul::Identifier const& _identifier);
+	wasm::Expression operator()(yul::FunctionCall const&);
+	wasm::Expression operator()(yul::ExpressionStatement const& _statement);
+	wasm::Expression operator()(yul::Assignment const& _assignment);
+	wasm::Expression operator()(yul::VariableDeclaration const& _varDecl);
+	wasm::Expression operator()(yul::If const& _if);
+	wasm::Expression operator()(yul::Switch const& _switch);
+	wasm::Expression operator()(yul::FunctionDefinition const&);
+	wasm::Expression operator()(yul::ForLoop const&);
+	wasm::Expression operator()(yul::Break const&);
+	wasm::Expression operator()(yul::Continue const&);
+	wasm::Expression operator()(yul::Leave const&);
+	wasm::Expression operator()(yul::Block const& _block);
+
+private:
+	WasmCodeTransform(
+		Dialect const& _dialect,
+		Block const& _ast
+	):
+		m_dialect(_dialect),
+		m_nameDispenser(_dialect, _ast)
+	{}
+
+	std::unique_ptr<wasm::Expression> visit(yul::Expression const& _expression);
+	wasm::Expression visitReturnByValue(yul::Expression const& _expression);
+	std::vector<wasm::Expression> visit(std::vector<yul::Expression> const& _expressions);
+	wasm::Expression visit(yul::Statement const& _statement);
+	std::vector<wasm::Expression> visit(std::vector<yul::Statement> const& _statements);
+
+	/// Returns an assignment or a block containing multiple assignments.
+	/// @param _variableNames the names of the variables to assign to
+	/// @param _firstValue the value to be assigned to the first variable. If there
+	///        is more than one variable, the values are taken from m_globalVariables.
+	wasm::Expression generateMultiAssignment(
+		std::vector<std::string> _variableNames,
+		std::unique_ptr<wasm::Expression> _firstValue
+	);
+
+	wasm::FunctionDefinition translateFunction(yul::FunctionDefinition const& _funDef);
+
+	wasm::Expression injectTypeConversionIfNeeded(wasm::FunctionCall _call) const;
+	std::vector<wasm::Expression> injectTypeConversionIfNeeded(
+		std::vector<wasm::Expression> _arguments,
+		std::vector<yul::Type> const& _parameterTypes
+	) const;
+
+	std::string newLabel();
+	/// Makes sure that there are at least @a _amount global variables.
+	void allocateGlobals(size_t _amount);
+
+	Dialect const& m_dialect;
+	NameDispenser m_nameDispenser;
+
+	std::vector<wasm::VariableDeclaration> m_localVariables;
+	std::vector<wasm::GlobalVariableDeclaration> m_globalVariables;
+	std::map<YulString, wasm::FunctionImport> m_functionsToImport;
+	std::stack<std::pair<std::string, std::string>> m_breakContinueLabelNames;
+};
+
+}