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Variable-size stack elements for expression compiler.

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Christian
2014-12-08 22:26:22 +01:00
parent b7d856ed5f
commit 35d5b28fae
5 changed files with 84 additions and 26 deletions
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CompilerUtils.cpp
+11
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@@ -35,6 +35,9 @@ void CompilerUtils::moveToStackVariable(VariableDeclaration const& _variable)
{
unsigned const stackPosition = m_context.baseToCurrentStackOffset(m_context.getBaseStackOffsetOfVariable(_variable));
unsigned const size = _variable.getType()->getSizeOnStack();
if (stackPosition - size + 1 > 16)
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_sourceLocation(_variable.getLocation())
<< errinfo_comment("Stack too deep."));
for (unsigned i = 0; i < size; ++i)
m_context << eth::swapInstruction(stackPosition - size + 1) << eth::Instruction::POP;
}
@@ -46,5 +49,13 @@ void CompilerUtils::popStackElement(Type const& _type)
m_context << eth::Instruction::POP;
}
unsigned CompilerUtils::getSizeOnStack(vector<shared_ptr<Type const>> const& _variableTypes)
{
unsigned size = 0;
for (shared_ptr<Type const> const& type: _variableTypes)
size += type->getSizeOnStack();
return size;
}
}
}