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Merge pull request #2295 from ethereum/asm-cleanup

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Cleanup the assembly AST
This commit is contained in:
Alex Beregszaszi 2017-05-24 11:55:43 +01:00 committed by GitHub
commit cf639f48f2
10 changed files with 47 additions and 41 deletions
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4
libsolidity/inlineasm/AsmAnalysis.cpp
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@ -160,7 +160,7 @@ bool AsmAnalyzer::operator()(FunctionalInstruction const& _instr)
return success;
}
bool AsmAnalyzer::operator()(assembly::Assignment const& _assignment)
bool AsmAnalyzer::operator()(assembly::StackAssignment const& _assignment)
{
bool success = checkAssignment(_assignment.variableName, size_t(-1));
m_info.stackHeightInfo[&_assignment] = m_stackHeight;
@ -168,7 +168,7 @@ bool AsmAnalyzer::operator()(assembly::Assignment const& _assignment)
}
bool AsmAnalyzer::operator()(FunctionalAssignment const& _assignment)
bool AsmAnalyzer::operator()(assembly::Assignment const& _assignment)
{
int const stackHeight = m_stackHeight;
bool success = boost::apply_visitor(*this, *_assignment.value);

8
libsolidity/inlineasm/AsmAnalysis.h
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@ -40,11 +40,11 @@ struct Literal;
struct Block;
struct Label;
struct FunctionalInstruction;
struct FunctionalAssignment;
struct Assignment;
struct VariableDeclaration;
struct Instruction;
struct Identifier;
struct Assignment;
struct StackAssignment;
struct FunctionDefinition;
struct FunctionCall;
@ -73,8 +73,8 @@ public:
bool operator()(assembly::Identifier const&);
bool operator()(assembly::FunctionalInstruction const& _functionalInstruction);
bool operator()(assembly::Label const& _label);
bool operator()(assembly::Assignment const&);
bool operator()(assembly::FunctionalAssignment const& _functionalAssignment);
bool operator()(assembly::StackAssignment const&);
bool operator()(assembly::Assignment const& _assignment);
bool operator()(assembly::VariableDeclaration const& _variableDeclaration);
bool operator()(assembly::FunctionDefinition const& _functionDefinition);
bool operator()(assembly::FunctionCall const& _functionCall);

6
libsolidity/inlineasm/AsmAnalysisInfo.h
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@ -36,17 +36,17 @@ struct Literal;
struct Block;
struct Label;
struct FunctionalInstruction;
struct FunctionalAssignment;
struct Assignment;
struct VariableDeclaration;
struct Instruction;
struct Identifier;
struct Assignment;
struct StackAssignment;
struct FunctionDefinition;
struct FunctionCall;
struct Scope;
using Statement = boost::variant<Instruction, Literal, Label, Assignment, Identifier, FunctionalAssignment, FunctionCall, FunctionalInstruction, VariableDeclaration, FunctionDefinition, Block>;
using Statement = boost::variant<Instruction, Literal, Label, StackAssignment, Identifier, Assignment, FunctionCall, FunctionalInstruction, VariableDeclaration, FunctionDefinition, Block>;
struct AsmAnalysisInfo
{

4
libsolidity/inlineasm/AsmCodeGen.cpp
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@ -233,13 +233,13 @@ public:
m_assembly.appendLabel(*label.id);
checkStackHeight(&_label);
}
void operator()(assembly::Assignment const& _assignment)
void operator()(assembly::StackAssignment const& _assignment)
{
m_assembly.setSourceLocation(_assignment.location);
generateAssignment(_assignment.variableName, _assignment.location);
checkStackHeight(&_assignment);
}
void operator()(FunctionalAssignment const& _assignment)
void operator()(assembly::Assignment const& _assignment)
{
int height = m_assembly.stackHeight();
boost::apply_visitor(*this, *_assignment.value);

29
libsolidity/inlineasm/AsmData.h
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@ -40,6 +40,20 @@ using TypedNameList = std::vector<TypedName>;
/// What follows are the AST nodes for assembly.
struct Instruction;
struct Literal;
struct Label;
struct StackAssignment;
struct Identifier;
struct Assignment;
struct VariableDeclaration;
struct FunctionalInstruction;
struct FunctionDefinition;
struct FunctionCall;
struct Block;
using Statement = boost::variant<Instruction, Literal, Label, StackAssignment, Identifier, Assignment, FunctionCall, FunctionalInstruction, VariableDeclaration, FunctionDefinition, Block>;
/// Direct EVM instruction (except PUSHi and JUMPDEST)
struct Instruction { SourceLocation location; solidity::Instruction instruction; };
/// Literal number or string (up to 32 bytes)
@ -47,20 +61,13 @@ enum class LiteralKind { Number, Boolean, String };
struct Literal { SourceLocation location; LiteralKind kind; std::string value; Type type; };
/// External / internal identifier or label reference
struct Identifier { SourceLocation location; std::string name; };
struct FunctionalInstruction;
/// Jump label ("name:")
struct Label { SourceLocation location; std::string name; };
/// Assignemnt (":= x", moves stack top into x, potentially multiple slots)
struct Assignment { SourceLocation location; Identifier variableName; };
struct FunctionalAssignment;
struct VariableDeclaration;
struct FunctionDefinition;
struct FunctionCall;
struct Block;
using Statement = boost::variant<Instruction, Literal, Label, Assignment, Identifier, FunctionalAssignment, FunctionCall, FunctionalInstruction, VariableDeclaration, FunctionDefinition, Block>;
/// Functional assignment ("x := mload(20:u256)", expects push-1-expression on the right hand
/// Assignment from stack (":= x", moves stack top into x, potentially multiple slots)
struct StackAssignment { SourceLocation location; Identifier variableName; };
/// Assignment ("x := mload(20:u256)", expects push-1-expression on the right hand
/// side and requires x to occupy exactly one stack slot.
struct FunctionalAssignment { SourceLocation location; Identifier variableName; std::shared_ptr<Statement> value; };
struct Assignment { SourceLocation location; Identifier variableName; std::shared_ptr<Statement> value; };
/// Functional instruction, e.g. "mul(mload(20:u256), add(2:u256, x))"
struct FunctionalInstruction { SourceLocation location; Instruction instruction; std::vector<Statement> arguments; };
struct FunctionCall { SourceLocation location; Identifier functionName; std::vector<Statement> arguments; };

19
libsolidity/inlineasm/AsmParser.cpp
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@ -71,7 +71,7 @@ assembly::Statement Parser::parseStatement()
{
if (m_julia)
break;
assembly::Assignment assignment = createWithLocation<assembly::Assignment>();
assembly::StackAssignment assignment = createWithLocation<assembly::StackAssignment>();
m_scanner->next();
expectToken(Token::Colon);
assignment.variableName.location = location();
@ -96,7 +96,7 @@ assembly::Statement Parser::parseStatement()
switch (m_scanner->currentToken())
{
case Token::LParen:
return parseFunctionalInstruction(std::move(statement));
return parseCall(std::move(statement));
case Token::Colon:
{
if (statement.type() != typeid(assembly::Identifier))
@ -107,15 +107,14 @@ assembly::Statement Parser::parseStatement()
// while identifier:= (being followed by a non-colon) as identifier := (assignment).
if (m_scanner->currentToken() == Token::Assign && m_scanner->peekNextToken() != Token::Colon)
{
// functional assignment
FunctionalAssignment funAss = createWithLocation<FunctionalAssignment>(identifier.location);
assembly::Assignment assignment = createWithLocation<assembly::Assignment>(identifier.location);
if (!m_julia && instructions().count(identifier.name))
fatalParserError("Cannot use instruction names for identifier names.");
m_scanner->next();
funAss.variableName = identifier;
funAss.value.reset(new Statement(parseExpression()));
funAss.location.end = locationOf(*funAss.value).end;
return funAss;
assignment.variableName = identifier;
assignment.value.reset(new Statement(parseExpression()));
assignment.location.end = locationOf(*assignment.value).end;
return assignment;
}
else
{
@ -139,7 +138,7 @@ assembly::Statement Parser::parseExpression()
{
Statement operation = parseElementaryOperation(true);
if (m_scanner->currentToken() == Token::LParen)
return parseFunctionalInstruction(std::move(operation));
return parseCall(std::move(operation));
else
return operation;
}
@ -304,7 +303,7 @@ assembly::FunctionDefinition Parser::parseFunctionDefinition()
return funDef;
}
assembly::Statement Parser::parseFunctionalInstruction(assembly::Statement&& _instruction)
assembly::Statement Parser::parseCall(assembly::Statement&& _instruction)
{
if (_instruction.type() == typeid(Instruction))
{

2
libsolidity/inlineasm/AsmParser.h
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@ -68,7 +68,7 @@ protected:
Statement parseElementaryOperation(bool _onlySinglePusher = false);
VariableDeclaration parseVariableDeclaration();
FunctionDefinition parseFunctionDefinition();
Statement parseFunctionalInstruction(Statement&& _instruction);
Statement parseCall(Statement&& _instruction);
TypedName parseTypedName();
std::string expectAsmIdentifier();

6
libsolidity/inlineasm/AsmPrinter.cpp
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@ -108,15 +108,15 @@ string AsmPrinter::operator()(assembly::Label const& _label)
return _label.name + ":";
}
string AsmPrinter::operator()(assembly::Assignment const& _assignment)
string AsmPrinter::operator()(assembly::StackAssignment const& _assignment)
{
solAssert(!m_julia, "");
return "=: " + (*this)(_assignment.variableName);
}
string AsmPrinter::operator()(assembly::FunctionalAssignment const& _functionalAssignment)
string AsmPrinter::operator()(assembly::Assignment const& _assignment)
{
return (*this)(_functionalAssignment.variableName) + " := " + boost::apply_visitor(*this, *_functionalAssignment.value);
return (*this)(_assignment.variableName) + " := " + boost::apply_visitor(*this, *_assignment.value);
}
string AsmPrinter::operator()(assembly::VariableDeclaration const& _variableDeclaration)

4
libsolidity/inlineasm/AsmPrinter.h
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@ -35,8 +35,8 @@ struct Literal;
struct Identifier;
struct FunctionalInstruction;
struct Label;
struct StackAssignment;
struct Assignment;
struct FunctionalAssignment;
struct VariableDeclaration;
struct FunctionDefinition;
struct FunctionCall;
@ -52,8 +52,8 @@ public:
std::string operator()(assembly::Identifier const& _identifier);
std::string operator()(assembly::FunctionalInstruction const& _functionalInstruction);
std::string operator()(assembly::Label const& _label);
std::string operator()(assembly::StackAssignment const& _assignment);
std::string operator()(assembly::Assignment const& _assignment);
std::string operator()(assembly::FunctionalAssignment const& _functionalAssignment);
std::string operator()(assembly::VariableDeclaration const& _variableDeclaration);
std::string operator()(assembly::FunctionDefinition const& _functionDefinition);
std::string operator()(assembly::FunctionCall const& _functionCall);

6
libsolidity/inlineasm/AsmScopeFiller.h
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@ -39,11 +39,11 @@ struct Literal;
struct Block;
struct Label;
struct FunctionalInstruction;
struct FunctionalAssignment;
struct Assignment;
struct VariableDeclaration;
struct Instruction;
struct Identifier;
struct Assignment;
struct StackAssignment;
struct FunctionDefinition;
struct FunctionCall;
@ -64,8 +64,8 @@ public:
bool operator()(assembly::Identifier const&) { return true; }
bool operator()(assembly::FunctionalInstruction const&) { return true; }
bool operator()(assembly::Label const& _label);
bool operator()(assembly::StackAssignment const&) { return true; }
bool operator()(assembly::Assignment const&) { return true; }
bool operator()(assembly::FunctionalAssignment const&) { return true; }
bool operator()(assembly::VariableDeclaration const& _variableDeclaration);
bool operator()(assembly::FunctionDefinition const& _functionDefinition);
bool operator()(assembly::FunctionCall const&) { return true; }