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Remove FunctionCall from ElementaryOperation.

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This commit is contained in:
chriseth 2020-12-03 17:44:11 +01:00
parent a9be2e4bb8
commit 5071709b25
2 changed files with 30 additions and 33 deletions
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57
libyul/AsmParser.cpp
View File

@ -27,6 +27,7 @@
#include <liblangutil/Scanner.h>
#include <liblangutil/ErrorReporter.h>
#include <libsolutil/Common.h>
#include <libsolutil/Visitor.h>
#include <boost/algorithm/string.hpp>
@ -142,7 +143,7 @@ Statement Parser::parseStatement()
// Options left:
// Expression/FunctionCall
// Assignment
ElementaryOperation elementary(parseLiteralOrIdentifier());
variant<Literal, Identifier> elementary(parseLiteralOrIdentifier());
switch (currentToken())
{
@ -212,7 +213,7 @@ Case Parser::parseCase()
else if (currentToken() == Token::Case)
{
advance();
ElementaryOperation literal = parseLiteralOrIdentifier();
variant<Literal, Identifier> literal = parseLiteralOrIdentifier();
if (!holds_alternative<Literal>(literal))
fatalParserError(4805_error, "Literal expected.");
_case.value = make_unique<Literal>(std::get<Literal>(std::move(literal)));
@ -251,38 +252,37 @@ Expression Parser::parseExpression()
{
RecursionGuard recursionGuard(*this);
ElementaryOperation operation = parseLiteralOrIdentifier();
if (holds_alternative<Identifier>(operation))
{
if (currentToken() == Token::LParen)
return parseCall(std::move(operation));
auto identifier = std::get<Identifier>(operation);
if (m_dialect.builtin(identifier.name))
fatalParserError(
7104_error,
identifier.location,
"Builtin function \"" + identifier.name.str() + "\" must be called."
);
return identifier;
}
else
{
yulAssert(holds_alternative<Literal>(operation), "");
return std::get<Literal>(operation);
}
variant<Literal, Identifier> operation = parseLiteralOrIdentifier();
return visit(GenericVisitor{
[&](Identifier& _identifier) -> Expression
{
if (currentToken() == Token::LParen)
return parseCall(std::move(operation));
if (m_dialect.builtin(_identifier.name))
fatalParserError(
7104_error,
_identifier.location,
"Builtin function \"" + _identifier.name.str() + "\" must be called."
);
return move(_identifier);
},
[&](Literal& _literal) -> Expression
{
return move(_literal);
}
}, operation);
}
Parser::ElementaryOperation Parser::parseLiteralOrIdentifier()
variant<Literal, Identifier> Parser::parseLiteralOrIdentifier()
{
RecursionGuard recursionGuard(*this);
ElementaryOperation ret;
switch (currentToken())
{
case Token::Identifier:
{
ret = Identifier{currentLocation(), YulString{currentLiteral()}};
Identifier identifier{currentLocation(), YulString{currentLiteral()}};
advance();
break;
return identifier;
}
case Token::StringLiteral:
case Token::Number:
@ -322,8 +322,7 @@ Parser::ElementaryOperation Parser::parseLiteralOrIdentifier()
literal.type = expectAsmIdentifier();
}
ret = std::move(literal);
break;
return literal;
}
case Token::HexStringLiteral:
fatalParserError(3772_error, "Hex literals are not valid in this context.");
@ -331,7 +330,7 @@ Parser::ElementaryOperation Parser::parseLiteralOrIdentifier()
default:
fatalParserError(1856_error, "Literal or identifier expected.");
}
return ret;
return {};
}
VariableDeclaration Parser::parseVariableDeclaration()
@ -405,7 +404,7 @@ FunctionDefinition Parser::parseFunctionDefinition()
return funDef;
}
FunctionCall Parser::parseCall(Parser::ElementaryOperation&& _initialOp)
FunctionCall Parser::parseCall(variant<Literal, Identifier>&& _initialOp)
{
RecursionGuard recursionGuard(*this);

6
libyul/AsmParser.h
View File

@ -61,8 +61,6 @@ public:
std::unique_ptr<Block> parse(std::shared_ptr<langutil::Scanner> const& _scanner, bool _reuseScanner);
protected:
using ElementaryOperation = std::variant<Literal, Identifier, FunctionCall>;
langutil::SourceLocation currentLocation() const override
{
return m_locationOverride ? *m_locationOverride : ParserBase::currentLocation();
@ -84,10 +82,10 @@ protected:
Expression parseExpression();
/// Parses an elementary operation, i.e. a literal, identifier, instruction or
/// builtin functian call (only the name).
ElementaryOperation parseLiteralOrIdentifier();
std::variant<Literal, Identifier> parseLiteralOrIdentifier();
VariableDeclaration parseVariableDeclaration();
FunctionDefinition parseFunctionDefinition();
FunctionCall parseCall(ElementaryOperation&& _initialOp);
FunctionCall parseCall(std::variant<Literal, Identifier>&& _initialOp);
TypedName parseTypedName();
YulString expectAsmIdentifier();