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[cond-expr] fixup according to code review

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This commit is contained in:
Lu Guanqun 2016-01-07 09:14:29 +00:00
parent 82ee9503e9
commit b003290638
4 changed files with 24 additions and 6 deletions
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9
libsolidity/analysis/TypeChecker.cpp
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@ -765,7 +765,7 @@ bool TypeChecker::visit(Conditional const& _conditional)
" doesn't match false expression's type " +
falseType->toString() +
"."
);
);
_conditional.annotation().type = trueType;
_conditional.annotation().isLValue = true;
@ -781,6 +781,7 @@ bool TypeChecker::visit(Conditional const& _conditional)
// we fake it as an equal operator, but any other comparison operator can work.
TypePointer commonType = trueType->binaryOperatorResult(Token::Equal, falseType);
if (!commonType)
{
typeError(
_conditional.location(),
"True expression's type " +
@ -788,7 +789,11 @@ bool TypeChecker::visit(Conditional const& _conditional)
" doesn't match false expression's type " +
falseType->toString() +
"."
);
);
// even we can't find a common type, we have to set a type here,
// otherwise the upper statement will not be able to check the type.
commonType = trueType;
}
_conditional.annotation().type = commonType;
}

4
libsolidity/codegen/ExpressionCompiler.cpp
View File

@ -182,10 +182,12 @@ bool ExpressionCompiler::visit(Conditional const& _condition)
_condition.condition().accept(*this);
eth::AssemblyItem trueTag = m_context.appendConditionalJump();
_condition.falseExpression().accept(*this);
utils().convertType(*_condition.falseExpression().annotation().type, *_condition.annotation().type);
eth::AssemblyItem endTag = m_context.appendJumpToNew();
m_context << trueTag;
m_context.adjustStackOffset(-1);
m_context.adjustStackOffset(-_condition.annotation().type->sizeOnStack());
_condition.trueExpression().accept(*this);
utils().convertType(*_condition.trueExpression().annotation().type, *_condition.annotation().type);
m_context << endTag;
return false;
}

2
libsolidity/parsing/Parser.cpp
View File

@ -947,7 +947,7 @@ ASTPointer<Expression> Parser::parseExpression(
expectToken(Token::Colon);
ASTPointer<Expression> falseExpression = parseExpression();
ASTNodeFactory nodeFactory(*this, expression);
nodeFactory.setEndPositionFromNode(falseExpression); // TODO:
nodeFactory.setEndPositionFromNode(falseExpression);
return nodeFactory.createNode<Conditional>(expression, trueExpression, falseExpression);
}
else

15
test/libsolidity/SolidityEndToEndTest.cpp
View File

@ -128,7 +128,6 @@ BOOST_AUTO_TEST_CASE(conditional_expression_multiple)
BOOST_CHECK(callContractFunction("f(uint256)", u256(40)) == toBigEndian(u256(10)));
}
/*
BOOST_AUTO_TEST_CASE(conditional_expression_as_left_value)
{
char const* sourceCode = R"(
@ -144,7 +143,19 @@ BOOST_AUTO_TEST_CASE(conditional_expression_as_left_value)
BOOST_CHECK(callContractFunction("f(uint256)", u256(20)) == toBigEndian(u256(3)));
BOOST_CHECK(callContractFunction("f(uint256)", u256(5)) == toBigEndian(u256(1)));
}
*/
BOOST_AUTO_TEST_CASE(conditional_expression_with_return_values)
{
char const* sourceCode = R"(
contract test {
function f(bool cond, uint v) returns (uint a, uint b) {
cond ? a = v : b = v;
}
})";
compileAndRun(sourceCode);
BOOST_CHECK(callContractFunction("f(bool,uint256)", true, u256(20)) == encodeArgs(u256(20), u256(0)));
BOOST_CHECK(callContractFunction("f(bool,uint256)", false, u256(20)) == encodeArgs(u256(0), u256(20)));
}
BOOST_AUTO_TEST_CASE(recursive_calls)
{