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ir_function_signature: Add method to get the function owning a signature

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There is no setter function, the getter returns a constant pointer,
and ir_function_signature::_function is private for a reason.  The
only way to make a connection between a function and function
signature is via ir_function::add_signature.  This helps ensure that
certain invariants (i.e., a function signature is in the list of
signatures for its _function) are met.
This commit is contained in:
Ian Romanick
2010-07-02 13:28:32 -07:00
parent f3235eb37f
commit df05ad4e1a
2 changed files with 22 additions and 5 deletions
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2
src/glsl/ir.cpp
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@@ -771,7 +771,7 @@ ir_variable::component_slots() const
ir_function_signature::ir_function_signature(const glsl_type *return_type) ir_function_signature::ir_function_signature(const glsl_type *return_type)
: return_type(return_type), is_defined(false) : return_type(return_type), is_defined(false), _function(NULL)
{ {
/* empty */ /* empty */
} }

25
src/glsl/ir.h
View File

@@ -275,6 +275,23 @@ public:
*/ */
const char *function_name() const; const char *function_name() const;
/**
* Get a handle to the function for which this is a signature
*
* There is no setter function, this function returns a \c const pointer,
* and \c ir_function_signature::_function is private for a reason. The
* only way to make a connection between a function and function signature
* is via \c ir_function::add_signature. This helps ensure that certain
* invariants (i.e., a function signature is in the list of signatures for
* its \c _function) are met.
*
* \sa ir_function::add_signature
*/
inline const class ir_function *function() const
{
return this->_function;
}
/** /**
* Check whether the qualifiers match between this signature's parameters * Check whether the qualifiers match between this signature's parameters
* and the supplied parameter list. If not, returns the name of the first * and the supplied parameter list. If not, returns the name of the first
@@ -312,7 +329,7 @@ public:
private: private:
/** Function of which this signature is one overload. */ /** Function of which this signature is one overload. */
class ir_function *function; class ir_function *_function;
friend class ir_function; friend class ir_function;
}; };
@@ -343,8 +360,8 @@ public:
void add_signature(ir_function_signature *sig) void add_signature(ir_function_signature *sig)
{ {
sig->function = this; sig->_function = this;
signatures.push_tail(sig); this->signatures.push_tail(sig);
} }
/** /**
@@ -381,7 +398,7 @@ private:
inline const char *ir_function_signature::function_name() const inline const char *ir_function_signature::function_name() const
{ {
return function->name; return this->_function->name;
} }
/*@}*/ /*@}*/