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[yul-phaser] Program: Use unique_ptr rather than shared_ptr to hold a pointer to the AST root

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- The class never shares the instance so unique_ptr makes more sense.
This commit is contained in:
cameel 2020-01-22 17:33:36 +01:00
parent 513d41c315
commit 14d726ff01
2 changed files with 9 additions and 10 deletions
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7
tools/yulPhaser/Program.cpp
View File

@ -25,7 +25,6 @@
#include <libyul/AsmAnalysis.h>
#include <libyul/AsmAnalysisInfo.h>
#include <libyul/AsmData.h>
#include <libyul/AsmParser.h>
#include <libyul/YulString.h>
#include <libyul/backends/evm/EVMDialect.h>
@ -56,7 +55,7 @@ set<YulString> const Program::s_externallyUsedIdentifiers = {};
Program Program::load(string const& _sourcePath)
{
Dialect const& dialect = EVMDialect::strictAssemblyForEVMObjects(EVMVersion{});
shared_ptr<Block> ast = parseSource(dialect, loadSource(_sourcePath));
unique_ptr<Block> ast = parseSource(dialect, loadSource(_sourcePath));
unique_ptr<AsmAnalysisInfo> analysisInfo = analyzeAST(dialect, *ast);
Program program(
@ -85,14 +84,14 @@ CharStream Program::loadSource(string const& _sourcePath)
return CharStream(sourceCode, _sourcePath);
}
shared_ptr<Block> Program::parseSource(Dialect const& _dialect, CharStream _source)
unique_ptr<Block> Program::parseSource(Dialect const& _dialect, CharStream _source)
{
ErrorList errors;
ErrorReporter errorReporter(errors);
auto scanner = make_shared<Scanner>(move(_source));
Parser parser(errorReporter, _dialect);
shared_ptr<Block> ast = parser.parse(scanner, false);
unique_ptr<Block> ast = parser.parse(scanner, false);
assertThrow(ast != nullptr, InvalidProgram, "Error parsing source");
assert(errorReporter.errors().empty());

12
tools/yulPhaser/Program.h
View File

@ -19,6 +19,7 @@
#include <libyul/optimiser/OptimiserStep.h>
#include <libyul/optimiser/NameDispenser.h>
#include <libyul/AsmData.h>
#include <optional>
#include <set>
@ -36,7 +37,6 @@ namespace solidity::yul
{
struct AsmAnalysisInfo;
struct Block;
struct Dialect;
class YulString;
@ -66,15 +66,15 @@ public:
private:
Program(
yul::Dialect const& _dialect,
std::shared_ptr<yul::Block> _ast
std::unique_ptr<yul::Block> _ast
):
m_ast(_ast),
m_nameDispenser(_dialect, *_ast, s_externallyUsedIdentifiers),
m_ast(std::move(_ast)),
m_nameDispenser(_dialect, *m_ast, s_externallyUsedIdentifiers),
m_optimiserStepContext{_dialect, m_nameDispenser, s_externallyUsedIdentifiers}
{}
static langutil::CharStream loadSource(std::string const& _sourcePath);
static std::shared_ptr<yul::Block> parseSource(
static std::unique_ptr<yul::Block> parseSource(
yul::Dialect const& _dialect,
langutil::CharStream _source
);
@ -94,7 +94,7 @@ private:
);
static size_t computeCodeSize(yul::Block const& _ast);
std::shared_ptr<yul::Block> m_ast;
std::unique_ptr<yul::Block> m_ast;
yul::NameDispenser m_nameDispenser;
yul::OptimiserStepContext m_optimiserStepContext;