From e544698ad3a2101e3d910d0761571d4fa20144e8 Mon Sep 17 00:00:00 2001 From: Rhett Aultman Date: Fri, 28 Apr 2017 17:43:19 -0700 Subject: Deprecate use of unary '+' The unary '+' serves no meaningful purpose in Solidity and it makes it possible to produce typos with dagerous implications (e.g. 'a =+5 '), so we are deprecating it. The SyntaxChecker currently issues warnings on the unary '+' but will still compile it for now. --- libsolidity/analysis/SyntaxChecker.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'libsolidity/analysis/SyntaxChecker.h') diff --git a/libsolidity/analysis/SyntaxChecker.h b/libsolidity/analysis/SyntaxChecker.h index 308e128b..8d7dcdd3 100644 --- a/libsolidity/analysis/SyntaxChecker.h +++ b/libsolidity/analysis/SyntaxChecker.h @@ -32,6 +32,7 @@ namespace solidity * The module that performs syntax analysis on the AST: * - whether continue/break is in a for/while loop. * - whether a modifier contains at least one '_' + * - issues deprecation warnings for unary '+' */ class SyntaxChecker: private ASTConstVisitor { @@ -43,6 +44,7 @@ public: private: /// Adds a new error to the list of errors. + void warning(SourceLocation const& _location, std::string const& _description); void syntaxError(SourceLocation const& _location, std::string const& _description); virtual bool visit(SourceUnit const& _sourceUnit) override; @@ -60,6 +62,8 @@ private: virtual bool visit(Continue const& _continueStatement) override; virtual bool visit(Break const& _breakStatement) override; + virtual bool visit(UnaryOperation const& _operation) override; + virtual bool visit(PlaceholderStatement const& _placeholderStatement) override; ErrorList& m_errors; -- cgit v1.2.3