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Legacy codegeneration for immutable state variables.

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This commit is contained in:
Daniel Kirchner
2020-03-24 16:45:25 +01:00
committed by chriseth
parent 83cbfbb7bf
commit 04d8ad2ae1
22 changed files with 471 additions and 17 deletions
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libsolidity/codegen/LValue.h
+35 -10
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@@ -23,6 +23,7 @@
#pragma once
#include <libsolidity/codegen/ArrayUtils.h>
#include <libsolutil/Common.h>
#include <liblangutil/SourceLocation.h>
#include <memory>
#include <vector>
@@ -82,12 +83,12 @@ public:
unsigned sizeOnStack() const override { return 0; }
void retrieveValue(langutil::SourceLocation const& _location, bool _remove = false) const override;
virtual void storeValue(
void storeValue(
Type const& _sourceType,
langutil::SourceLocation const& _location = {},
bool _move = false
) const override;
virtual void setToZero(
void setToZero(
langutil::SourceLocation const& _location = {},
bool _removeReference = true
) const override;
@@ -108,12 +109,12 @@ public:
MemoryItem(CompilerContext& _compilerContext, Type const& _type, bool _padded = true);
unsigned sizeOnStack() const override { return 1; }
void retrieveValue(langutil::SourceLocation const& _location, bool _remove = false) const override;
virtual void storeValue(
void storeValue(
Type const& _sourceType,
langutil::SourceLocation const& _location = {},
bool _move = false
) const override;
virtual void setToZero(
void setToZero(
langutil::SourceLocation const& _location = {},
bool _removeReference = true
) const override;
@@ -122,6 +123,30 @@ private:
bool m_padded = false;
};
/**
* Reference to an immutable variable. During contract creation this refers to a location in memory. At the
* end of contract creation the values from these memory locations are copied into all occurrences of the immutable
* variable in the runtime code.
*/
class ImmutableItem: public LValue
{
public:
ImmutableItem(CompilerContext& _compilerContext, VariableDeclaration const& _variable);
unsigned sizeOnStack() const override { return 0; }
void retrieveValue(langutil::SourceLocation const& _location, bool _remove = false) const override;
void storeValue(
Type const& _sourceType,
langutil::SourceLocation const& _location = {},
bool _move = false
) const override;
void setToZero(
langutil::SourceLocation const& _location = {},
bool _removeReference = true
) const override;
private:
VariableDeclaration const& m_variable;
};
/**
* Reference to some item in storage. On the stack this is <storage key> <offset_inside_value>,
* where 0 <= offset_inside_value < 32 and an offset of i means that the value is multiplied
@@ -136,12 +161,12 @@ public:
StorageItem(CompilerContext& _compilerContext, Type const& _type);
unsigned sizeOnStack() const override { return 2; }
void retrieveValue(langutil::SourceLocation const& _location, bool _remove = false) const override;
virtual void storeValue(
void storeValue(
Type const& _sourceType,
langutil::SourceLocation const& _location = {},
bool _move = false
) const override;
virtual void setToZero(
void setToZero(
langutil::SourceLocation const& _location = {},
bool _removeReference = true
) const override;
@@ -158,12 +183,12 @@ public:
StorageByteArrayElement(CompilerContext& _compilerContext);
unsigned sizeOnStack() const override { return 2; }
void retrieveValue(langutil::SourceLocation const& _location, bool _remove = false) const override;
virtual void storeValue(
void storeValue(
Type const& _sourceType,
langutil::SourceLocation const& _location = {},
bool _move = false
) const override;
virtual void setToZero(
void setToZero(
langutil::SourceLocation const& _location = {},
bool _removeReference = true
) const override;
@@ -180,12 +205,12 @@ public:
TupleObject(CompilerContext& _compilerContext, std::vector<std::unique_ptr<LValue>>&& _lvalues);
unsigned sizeOnStack() const override;
void retrieveValue(langutil::SourceLocation const& _location, bool _remove = false) const override;
virtual void storeValue(
void storeValue(
Type const& _sourceType,
langutil::SourceLocation const& _location = {},
bool _move = false
) const override;
virtual void setToZero(
void setToZero(
langutil::SourceLocation const& _location = {},
bool _removeReference = true
) const override;