DefinedTracker - This struct is used while parsing expressions to keep track of whether !defined(X) has been seen. More...

Public Types
enum	TrackerState { DefinedMacro , NotDefinedMacro , Unknown }
	Each time a Value is evaluated, it returns information about whether the parsed value is of the form defined(X), !defined(X) or is something else. More...

Public Attributes
enum DefinedTracker::TrackerState	State

IdentifierInfo *	TheMacro
	TheMacro - When the state is DefinedMacro or NotDefinedMacro, this indicates the macro that was checked.

bool	IncludedUndefinedIds = false

Detailed Description

DefinedTracker - This struct is used while parsing expressions to keep track of whether !defined(X) has been seen.

With this simple scheme, we handle the basic forms: !defined(X) and !defined X but we also trivially handle (silly) stuff like: !!!defined(X) and +!defined(X) and !+!+!defined(X) and !(defined(X)).

Definition at line 87 of file PPExpressions.cpp.