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Split external identifier access into resolving and code generation.

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chriseth
2017-04-25 16:49:03 +02:00
committed by chriseth
parent 5d6747eb32
commit e0849f2f3b
9 changed files with 189 additions and 144 deletions
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libsolidity/inlineasm/AsmCodeGen.h
+6 -12
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@@ -22,8 +22,10 @@
#pragma once
#include <functional>
#include <libsolidity/interface/Exceptions.h>
#include <libsolidity/inlineasm/AsmStack.h>
#include <functional>
namespace dev
{
@@ -36,27 +38,19 @@ namespace solidity
namespace assembly
{
struct Block;
struct Identifier;
class CodeGenerator
{
public:
enum class IdentifierContext { LValue, RValue };
/// Function type that is called for external identifiers. Such a function should search for
/// the identifier and append appropriate assembly items to the assembly. If in lvalue context,
/// the value to assign is assumed to be on the stack and an assignment is to be performed.
/// If in rvalue context, the function is assumed to append instructions to
/// push the value of the identifier onto the stack. On error, the function should return false.
using IdentifierAccess = std::function<bool(assembly::Identifier const&, eth::Assembly&, IdentifierContext)>;
CodeGenerator(Block const& _parsedData, ErrorList& _errors):
m_parsedData(_parsedData), m_errors(_errors) {}
/// Performs type checks and @returns false on error.
/// Actually runs the full code generation but discards the result.
bool typeCheck(IdentifierAccess const& _identifierAccess = IdentifierAccess());
bool typeCheck(ExternalIdentifierAccess const& _identifierAccess = ExternalIdentifierAccess());
/// Performs code generation and @returns the result.
eth::Assembly assemble(IdentifierAccess const& _identifierAccess = IdentifierAccess());
eth::Assembly assemble(ExternalIdentifierAccess const& _identifierAccess = ExternalIdentifierAccess());
/// Performs code generation and appends generated to to _assembly.
void assemble(eth::Assembly& _assembly, IdentifierAccess const& _identifierAccess = IdentifierAccess());
void assemble(eth::Assembly& _assembly, ExternalIdentifierAccess const& _identifierAccess = ExternalIdentifierAccess());
private:
Block const& m_parsedData;