|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Main Page | Modules | Namespace List | Class Hierarchy | Alphabetical List | Class List | Directories | File List | Namespace Members | Class Members | File Members | Related Pages
ifNode Class ReferenceIf-else statement.
More...
|
Garbage collection. | |
bool | mark |
static node_list | nodes |
static map< Node *, bool > | deleted_nodes |
Public Member Functions | |
ifNode (exprNode *expr, stmtNode *true_br, stmtNode *false_br, const Coord if_coord=Coord::Unknown, const Coord else_coord=Coord::Unknown) | |
Create a new if-else statement. | |
virtual | ~ifNode () |
Destroy a ifNode. | |
virtual void | dataflow (FlowVal *v, FlowProblem &fp) |
Run the dataflow analyzer. | |
virtual Node * | clone () const |
Clone the input node. | |
virtual void | output_stmt (output_context &ct, Node *par) |
Output a statement. | |
virtual void | output (output_context &ct, Node *par) |
Generate C code. | |
void | output_comment (output_context &ct) |
virtual typeNode * | type () const |
Return the node data type. | |
virtual typeNode * | base_type (bool TdefIndir) const |
Return the base data type of a node. | |
typeNode * | datatype () const |
Call base_type() with the argument true. | |
typeNode * | datatype_superior () const |
Call base_type() with the argument false. | |
Accessors | |
Methods to get and set fields in the class. | |
blockNode * | true_br () const |
blockNode * | get_true_br () |
void | true_br (blockNode *true_br) |
blockNode * | false_br () const |
blockNode * | get_false_br () |
void | false_br (blockNode *false_br) |
Coord | else_coord () const |
void | else_coord (const Coord the_coord) |
AST Traversal | |
virtual void | visit (Visitor *the_visitor) |
Dispatch a Visitor. | |
virtual void | walk (Walker &the_walker) |
Dispatch a Walker. | |
virtual Node * | change (Changer &the_changer, bool redispatch=false) |
Dispatch a Changer. | |
Accessors | |
Methods to get and set fields in the class. | |
exprNode * | expr () const |
void | expr (exprNode *expr) |
exprNode * | get_expr () |
blockNode * | stmt () const |
void | stmt (blockNode *stmt) |
blockNode * | get_stmt () |
Accessors | |
Methods to get and set fields in the class. | |
string & | comment () |
FlowVal * | at_exit () const |
void | at_exit (FlowVal *ae) |
Accessors | |
Methods to get and set fields in the class. | |
NodeType | typ () const |
Get the node type. | |
Coord | coord () const |
Get the source location. | |
void | coord (const Coord coord) |
Set the source location. | |
bool | parenthesized () const |
Get the parenthesized boolean. | |
void | parenthesized (bool paren) |
Set the parenthesized boolean. | |
annote_list & | annotations () |
Get the annotations list. | |
FlowVal * | gen () const |
Get the "gen" flow value. | |
void | gen (FlowVal *g) |
Set the "gen" flow value. | |
FlowVal * | kill () const |
Get the "kill" flow value. | |
void | kill (FlowVal *k) |
Set the "kill" flow value. | |
Static Public Member Functions | |
static void | report () |
Report node count statistics. | |
Private Attributes | |
TREE blockNode * | _false_br |
the false branch statement | |
Coord | _else_coord |
the position of the "else" keyword in the source file |
This class represents an "if" statement. The selection expression serves as the condition and the child statement inherited from selectionNode is the true branch. It adds a child statement for the false branch. The false branch may be null, indicating that the statement has no "else" branch.
The NodeType is If.
Definition at line 5057 of file ast.h.
|
Create a new if-else statement. The new if-else statement has the given condition expression, and true and false branches. Pass null for the false branch to create an if without an else.
Referenced by clone(). |
|
Destroy a ifNode.
|
|
Get the annotations list. This method returns a modifiable reference to the list of annotations on the node. Users can add new annotations, search for annotations, or remove annotations. Users are responsible for ensuring that every element of the annotation list points to a valid annotation. In particular, no element should be NULL.
Definition at line 274 of file ast.h. References Node::_annotations. |
|
Reimplemented in basicblockNode. Definition at line 4291 of file ast.h. References stmtNode::_at_exit. |
|
Reimplemented in basicblockNode. Definition at line 4290 of file ast.h. References stmtNode::_at_exit. |
|
Return the base data type of a node. This method differs from the Node::type() method in two respects. First, it follows some of the simple type inferences. For example, calling it on an idNode will return the type of its declaration. Second, the boolean argument indicates whether or not to follow typedef links.
Reimplemented in declNode, procNode, typeNode, tdefNode, exprNode, idNode, commaNode, callNode, blockNode, and exprstmtNode. |
|
Dispatch a Changer. This abstract method works much the walker, but allows the tree to be changed.
Implements Node. |
|
Clone the input node. This is not a "deep" clone, so be careful. For a deep clone, use the ref_clone_changer class.
Implements Node. Definition at line 5130 of file ast.h. References ifNode(). |
|
Definition at line 4286 of file ast.h. References stmtNode::_comment. |
|
Set the source location. This location should indicate the position in the source text that this Node represents, or Coord::Unknown if it does not represent any node in the source text. It is not common to set the source location of a node. Currently, only the compiler error messages actually make use of it.
Definition at line 243 of file ast.h. References Node::_coord. |
|
Get the source location. The Coord class holds a location in the input source (file, line, position). During parsing, each AST node created records the position of the source text that it represents. However, subsequent phases may create or change nodes, so no guarantee is given about how the source location corresponds to the original source text.
Definition at line 230 of file ast.h. References Node::_coord. |
|
Run the dataflow analyzer. Each subclass overrides this method to define it's semantics for dataflow analysis. It alters the input flow value to reflect the effect of the node within the given flow problem, calling dataflow() on it's subtrees as necessary. See the dataflow analysis documentation for more information.
Implements Node. |
|
Call base_type() with the argument true.
|
|
Call base_type() with the argument false.
|
|
Definition at line 5109 of file ast.h. References _else_coord. |
|
Definition at line 5108 of file ast.h. References _else_coord. |
|
Definition at line 5037 of file ast.h. References selectionNode::_expr. |
|
Definition at line 5035 of file ast.h. References selectionNode::_expr. |
|
Definition at line 5106 of file ast.h. References _false_br. |
|
Definition at line 5104 of file ast.h. References _false_br. |
|
Set the "gen" flow value. This value is used in dataflow analyses to store information that is generated at this node. Note that each node has exactly one "gen" flow value. In order to set the flow value to be empty, call this method with a value of NULL.
Definition at line 297 of file ast.h. References Node::_gen. |
|
Get the "gen" flow value. This value is used in dataflow analyses to store information that is generated at this node. Note that each node has exactly one "gen" flow value.
Definition at line 284 of file ast.h. References Node::_gen. |
|
Definition at line 5036 of file ast.h. References selectionNode::_expr. |
|
Definition at line 5105 of file ast.h. References _false_br. |
|
Definition at line 5040 of file ast.h. References selectionNode::_stmt. Referenced by get_true_br(). |
|
Definition at line 5101 of file ast.h. References selectionNode::get_stmt(). |
|
Set the "kill" flow value. This value is used in dataflow analyses to store information that is killed at this node. Note that each node has exactly one "kill" flow value. To set the flow value to be empty, call this method with a value of NULL.
Definition at line 320 of file ast.h. References Node::_kill. |
|
Get the "kill" flow value. This value is used in dataflow analyses to store information that is killed at this node. Note that each node has exactly one "kill" flow value.
Definition at line 307 of file ast.h. References Node::_kill. |
|
Generate C code. Each subclass overrides this method to define how to produce the output C code. To use this method, pass an output_context and a null parent.
Implements Node. |
|
|
|
Output a statement.
Implements stmtNode. |
|
Set the parenthesized boolean. This boolean determines whether this expression will be parenthesized in the output. Note that that the parentheses will always be added when they are needed to disambiguate the output. This variable only controls the use of "un-necessary" parentheses.
Definition at line 262 of file ast.h. References Node::_parenthesized. |
|
Get the parenthesized boolean.
Definition at line 250 of file ast.h. References Node::_parenthesized. |
|
Report node count statistics. The code can be configured to gather statistics about node usage according to type. This method prints the current state of that accounting information to standard out. |
|
Definition at line 5041 of file ast.h. References selectionNode::_stmt. |
|
Definition at line 5039 of file ast.h. References selectionNode::_stmt. Referenced by true_br(). |
|
Definition at line 5102 of file ast.h. References selectionNode::stmt(). |
|
Definition at line 5100 of file ast.h. References selectionNode::stmt(). |
|
Get the node type. This has nothing to do with types in the source code. It indicates what kind of AST node this is (e.g., a unary expression node or a while node).
Definition at line 216 of file ast.h. References Node::_typ. Referenced by gcWalker::delete_nodes(), and NodeInfo::nodeIndex(). |
|
Return the node data type. This method returns the C data type of a node. Several different kinds of nodes contain typeNode pointers. This method is just a unified way to access them. It does not attempt to compute the type, it just returns whatever typeNode pointer resides on the node. The subclasses that have types return them, and the others return null.
Reimplemented in declNode, typeNode, exprNode, and operandNode. |
|
Dispatch a Visitor. This abstract method is the entry point for the visitor design pattern. Each node subclass defines a visit() method that calls the appropriate at_ method in the visitor. For more information see the Visitor documentation.
Implements Node. |
|
Dispatch a Walker. This abstract method works much like the visitor, but instead walks the entire underlying subtree calling the appropriate at_ method at each node. For more information see the Walker documentation.
Implements Node. |
|
the position of the "else" keyword in the source file
Definition at line 5068 of file ast.h. Referenced by else_coord(). |
|
the false branch statement
Definition at line 5064 of file ast.h. Referenced by false_br(), and get_false_br(). |
|
Definition at line 165 of file ast.h. Referenced by gcWalker::delete_nodes(). |
|
Definition at line 168 of file ast.h. Referenced by gcWalker::at_binary(), and gcWalker::delete_nodes(). |
|
Definition at line 162 of file ast.h. Referenced by gcWalker::delete_nodes(), and gcWalker::gcWalker(). |
Generated on February 1, 2006
Back to the C-Breeze home page