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Low level named functions for CompilerContext.

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This commit is contained in:
chriseth 2017-01-17 10:47:57 +01:00
parent dea59bfbdc
commit d0e8d340a5
2 changed files with 23 additions and 0 deletions
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15
libsolidity/codegen/CompilerContext.cpp
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@ -125,6 +125,21 @@ Declaration const* CompilerContext::nextFunctionToCompile() const
return m_functionCompilationQueue.nextFunctionToCompile(); return m_functionCompilationQueue.nextFunctionToCompile();
} }
eth::AssemblyItem const* CompilerContext::lowLevelFunctionEntryPoint(string const& _name) const
{
auto it = m_lowLevelFunctions.find(_name);
if (it == m_lowLevelFunctions.end())
return nullptr;
else
return *it;
}
void CompilerContext::addLowLevelFunction(string const& _name, eth::AssemblyItem const& _label)
{
solAssert(lowLevelFunctionEntryPoint(_name) != nullptr, "Low level function with that name already exists.");
m_lowLevelFunctions[_name] = _label.pushTag();
}
ModifierDefinition const& CompilerContext::functionModifier(string const& _name) const ModifierDefinition const& CompilerContext::functionModifier(string const& _name) const
{ {
solAssert(!m_inheritanceHierarchy.empty(), "No inheritance hierarchy set."); solAssert(!m_inheritanceHierarchy.empty(), "No inheritance hierarchy set.");

8
libsolidity/codegen/CompilerContext.h
View File

@ -90,6 +90,12 @@ public:
/// as "having code". /// as "having code".
void startFunction(Declaration const& _function); void startFunction(Declaration const& _function);
/// Returns the label of the low level function with the given name or nullptr if it
/// does not exist. The lifetime of the returned pointer is short.
eth::AssemblyItem const* lowLevelFunctionEntryPoint(std::string const& _name) const;
/// Inserts a low level function entry point into the list of low level functions.
void addLowLevelFunction(std::string const& _name, eth::AssemblyItem const& _label);
ModifierDefinition const& functionModifier(std::string const& _name) const; ModifierDefinition const& functionModifier(std::string const& _name) const;
/// Returns the distance of the given local variable from the bottom of the stack (of the current function). /// Returns the distance of the given local variable from the bottom of the stack (of the current function).
unsigned baseStackOffsetOfVariable(Declaration const& _declaration) const; unsigned baseStackOffsetOfVariable(Declaration const& _declaration) const;
@ -248,6 +254,8 @@ private:
CompilerContext *m_runtimeContext; CompilerContext *m_runtimeContext;
/// The index of the runtime subroutine. /// The index of the runtime subroutine.
size_t m_runtimeSub = -1; size_t m_runtimeSub = -1;
/// An index of low-level function labels by name.
std::map<std::string, eth::AssemblyItem> m_lowLevelFunctions;
}; };
} }