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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
2020-02-05 18:13:30 +01:00
parent 513d41c315
commit 14d726ff01
2 changed files with 9 additions and 10 deletions
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tools/yulPhaser/Program.cpp
+3 -4
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@@ -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());