Intel SPMD Program Compiler  1.9.1
Public Member Functions | Static Public Member Functions | List of all members
NullPointerExpr Class Reference

An expression that represents a NULL pointer. More...

#include <expr.h>

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Public Member Functions

 NullPointerExpr (SourcePos p)
 
llvm::Value * GetValue (FunctionEmitContext *ctx) const
 
const TypeGetType () const
 
ExprTypeCheck ()
 
ExprOptimize ()
 
llvm::Constant * GetConstant (const Type *type) const
 
void Print () const
 
int EstimateCost () const
 
- Public Member Functions inherited from Expr
 Expr (SourcePos p, unsigned scid)
 
virtual llvm::Value * GetLValue (FunctionEmitContext *ctx) const
 
virtual const TypeGetLValueType () const
 
virtual SymbolGetBaseSymbol () const
 
- Public Member Functions inherited from ASTNode
 ASTNode (SourcePos p, unsigned scid)
 
virtual ~ASTNode ()
 
unsigned getValueID () const
 

Static Public Member Functions

static bool classof (NullPointerExpr const *)
 
static bool classof (ASTNode const *N)
 
- Static Public Member Functions inherited from Expr
static bool classof (Expr const *)
 
static bool classof (ASTNode const *N)
 
- Static Public Member Functions inherited from ASTNode
static bool classof (ASTNode const *)
 

Additional Inherited Members

- Public Types inherited from ASTNode
enum  ASTNodeTy {
  AddressOfExprID, AssignExprID, BinaryExprID, ConstExprID,
  DerefExprID, PtrDerefExprID, RefDerefExprID, ExprListID,
  FunctionCallExprID, FunctionSymbolExprID, IndexExprID, StructMemberExprID,
  VectorMemberExprID, NewExprID, NullPointerExprID, ReferenceExprID,
  SelectExprID, SizeOfExprID, SymbolExprID, SyncExprID,
  TypeCastExprID, UnaryExprID, MaxExprID, AssertStmtID,
  BreakStmtID, CaseStmtID, ContinueStmtID, DeclStmtID,
  DefaultStmtID, DeleteStmtID, DoStmtID, ExprStmtID,
  ForeachActiveStmtID, ForeachStmtID, ForeachUniqueStmtID, ForStmtID,
  GotoStmtID, IfStmtID, LabeledStmtID, PrintStmtID,
  ReturnStmtID, StmtListID, SwitchStmtID, UnmaskedStmtID
}
 
- Public Attributes inherited from ASTNode
SourcePos pos
 

Detailed Description

An expression that represents a NULL pointer.

Definition at line 776 of file expr.h.

Constructor & Destructor Documentation

NullPointerExpr::NullPointerExpr ( SourcePos  p)
inline

Definition at line 778 of file expr.h.

Member Function Documentation

static bool NullPointerExpr::classof ( NullPointerExpr const *  )
inlinestatic

Definition at line 780 of file expr.h.

static bool NullPointerExpr::classof ( ASTNode const *  N)
inlinestatic

Definition at line 781 of file expr.h.

References ASTNode::getValueID(), and ASTNode::NullPointerExprID.

int NullPointerExpr::EstimateCost ( ) const
virtual

Estimate the execution cost of the node (not including the cost of the children. The value returned should be based on the COST_* enumerant values defined in ispc.h.

Implements ASTNode.

Definition at line 8562 of file expr.cpp.

llvm::Constant * NullPointerExpr::GetConstant ( const Type type) const
virtual

If this is a constant expression that can be converted to a constant of the given type, this method should return the corresponding llvm::Constant value. Otherwise it should return NULL.

Reimplemented from Expr.

Definition at line 8539 of file expr.cpp.

References AssertPos, Globals::ctx, Module::errorCount, g, Type::LLVMType(), and m.

const Type * NullPointerExpr::GetType ( ) const
virtual

Returns the Type of the expression.

Implements Expr.

Definition at line 8521 of file expr.cpp.

References PointerType::Void.

llvm::Value * NullPointerExpr::GetValue ( FunctionEmitContext ctx) const
virtual

This is the main method for Expr implementations to implement. It should call methods in the FunctionEmitContext to emit LLVM IR instructions to the current basic block in order to generate an llvm::Value that represents the expression's value.

Implements Expr.

Definition at line 8515 of file expr.cpp.

References LLVMTypes::VoidPointerType.

Expr * NullPointerExpr::Optimize ( )
virtual

This method should perform early optimizations of the expression (constant folding, etc.) and return a pointer to the resulting expression. If an error is encountered during optimization, NULL should be returned.

Implements Expr.

Definition at line 8533 of file expr.cpp.

void NullPointerExpr::Print ( ) const
virtual

Prints the expression to standard output (used for debugging).

Implements Expr.

Definition at line 8555 of file expr.cpp.

References SourcePos::Print().

Expr * NullPointerExpr::TypeCheck ( )
virtual

This method should perform type checking of the expression and return a pointer to the resulting expression. If an error is encountered, NULL should be returned.

Implements Expr.

Definition at line 8527 of file expr.cpp.


The documentation for this class was generated from the following files: