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Use builtin functions in the yul parser.

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This commit is contained in:
chriseth 2018-12-03 17:47:29 +01:00
parent 8654f8f6d4
commit 1746366bb6
1 changed files with 12 additions and 4 deletions
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16
libyul/AsmParser.cpp
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@ -114,7 +114,9 @@ Statement Parser::parseStatement()
expectToken(Token::Colon);
assignment.variableName.location = location();
assignment.variableName.name = YulString(currentLiteral());
if (instructions().count(assignment.variableName.name.str()))
if (m_dialect.builtins->query(assignment.variableName.name))
fatalParserError("Identifier expected, got builtin symbol.");
else if (instructions().count(assignment.variableName.name.str()))
fatalParserError("Identifier expected, got instruction name.");
assignment.location.end = endPosition();
expectToken(Token::Identifier);
@ -174,7 +176,9 @@ Statement Parser::parseStatement()
if (currentToken() == Token::Assign && peekNextToken() != Token::Colon)
{
Assignment assignment = createWithLocation<Assignment>(identifier.location);
if (m_dialect.flavour != AsmFlavour::Yul && instructions().count(identifier.name.str()))
if (m_dialect.builtins->query(identifier.name))
fatalParserError("Cannot assign to builtin function \"" + identifier.name.str() + "\".");
else if (m_dialect.flavour != AsmFlavour::Yul && instructions().count(identifier.name.str()))
fatalParserError("Cannot use instruction names for identifier names.");
advance();
assignment.variableNames.emplace_back(identifier);
@ -357,8 +361,10 @@ Parser::ElementaryOperation Parser::parseElementaryOperation()
literal = YulString{"address"};
else
literal = YulString{currentLiteral()};
// first search the set of instructions.
if (m_dialect.flavour != AsmFlavour::Yul && instructions().count(literal.str()))
// first search the set of builtins, then the instructions.
if (m_dialect.builtins->query(literal))
ret = Identifier{location(), literal};
else if (m_dialect.flavour != AsmFlavour::Yul && instructions().count(literal.str()))
{
dev::solidity::Instruction const& instr = instructions().at(literal.str());
ret = Instruction{location(), instr};
@ -592,6 +598,8 @@ YulString Parser::expectAsmIdentifier()
break;
}
}
else if (m_dialect.builtins->query(name))
fatalParserError("Cannot use builtin function name \"" + name.str() + "\" as identifier name.");
else if (instructions().count(name.str()))
fatalParserError("Cannot use instruction names for identifier names.");
expectToken(Token::Identifier);