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switchNode Class Reference
[The AST nodes]

Switch statement. More...

#include <ast.h>

Inheritance diagram for switchNode:

selectionNode stmtNode Node List of all members.

Garbage collection.

bool mark
node_list nodes
map< Node *, bool > deleted_nodes

Public Member Functions

 switchNode (exprNode *expr, stmtNode *stmt, const Coord coord=Coord::Unknown)
 Create a new switch statement.

virtual ~switchNode ()
 Destroy a switchNode.

virtual void dataflow (FlowVal *v, FlowProblem &fp)
 Run the dataflow analyzer.

virtual Nodeclone () 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 typeNodetype () const
 Return the node data type.

virtual typeNodebase_type (bool TdefIndir) const
 Return the base data type of a node.

typeNodedatatype () const
 Call base_type() with the argument true.

typeNodedatatype_superior () const
 Call base_type() with the argument false.

Accessors
Methods to get and set fields in the class.

target_listcases ()
const target_listcases () const
bool has_default () const
void has_default (bool has_default)
FlowValat_top () const
void at_top (FlowVal *at)
AST Traversal
Methods to uniformly traverse the AST. See the documentation in the Node class.

virtual void visit (Visitor *the_visitor)
 Dispatch a Visitor.

virtual void walk (Walker &the_walker)
 Dispatch a Walker.

virtual Nodechange (Changer &the_changer, bool redispatch=false)
 Dispatch a Changer.

Accessors
Methods to get and set fields in the class.

exprNodeexpr () const
void expr (exprNode *expr)
exprNodeget_expr ()
blockNodestmt () const
void stmt (blockNode *stmt)
blockNodeget_stmt ()
Accessors
Methods to get and set fields in the class.

string & comment ()
FlowValat_exit () const
void at_exit (FlowVal *ae)
text_listpragmas ()
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_listannotations ()
 Get the annotations list.

FlowValgen () const
 Get the "gen" flow value.

void gen (FlowVal *g)
 Set the "gen" flow value.

FlowValkill () const
 Get the "kill" flow value.

void kill (FlowVal *k)
 Set the "kill" flow value.


Static Public Member Functions

void report ()
 Report node count statistics.


Private Attributes

REF target_list _cases
 the list of cases

bool _has_default
 a flag that is true if the switch has a default case

FlowVal_at_top
 dataflow analysis entry value


Detailed Description

Switch statement.

This class represents the switch statement. The child statement is typically a compound statement containing the cases. All cases should be contained somewhere in that subtree, although there is currently no check for this. It contains a list of the cases (including the default) that are within its scope. This list is initially empty, but is computed after parsing by the set_container_walker.

The NodeType is Switch.

Definition at line 5235 of file ast.h.


Constructor & Destructor Documentation

switchNode::switchNode exprNode   expr,
stmtNode   stmt,
const Coord    coord = Coord::Unknown
 

Create a new switch statement.

The new switch statement has the given selection expression and the child statement that should contain the cases.

Parameters:
expr the selection expression
stmt the child statement containing the cases
coord the location of the construct in the source file.

Definition at line 44 of file switchnode.cc.

References Switch.

Referenced by clone().

switchNode::~switchNode   [virtual]
 

Destroy a switchNode.

Warning:
Do not use the destructors to delete AST nodes. Instead, rely on the node garbage collector.

Definition at line 225 of file switchnode.cc.


Member Function Documentation

annote_list& Node::annotations   [inline, inherited]
 

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.

See also:
Annote class

Definition at line 276 of file ast.h.

References annote_list.

void stmtNode::at_exit FlowVal   ae [inline, inherited]
 

Reimplemented in basicblockNode.

Definition at line 4373 of file ast.h.

FlowVal* stmtNode::at_exit   const [inline, inherited]
 

Reimplemented in basicblockNode.

Definition at line 4372 of file ast.h.

Referenced by init_flowproblem_walker::at_stmt(), whileNode::dataflow(), dataflow(), returnNode::dataflow(), forNode::dataflow(), doNode::dataflow(), and breakNode::dataflow().

void switchNode::at_top FlowVal   at [inline]
 

Definition at line 5291 of file ast.h.

FlowVal* switchNode::at_top   const [inline]
 

Definition at line 5290 of file ast.h.

Referenced by init_flowproblem_walker::at_switch(), and dataflow().

typeNode * Node::base_type bool    TdefIndir const [virtual, inherited]
 

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.

Parameters:
TdefIndir pass true to follow typedefs to their definitions.

Reimplemented in declNode, procNode, typeNode, tdefNode, exprNode, idNode, commaNode, callNode, blockNode, and exprstmtNode.

Definition at line 152 of file node.cc.

Referenced by Node::datatype(), and Node::datatype_superior().

const target_list& switchNode::cases   const [inline]
 

Definition at line 5285 of file ast.h.

References target_list.

target_list& switchNode::cases   [inline]
 

Definition at line 5284 of file ast.h.

References target_list.

Referenced by TreeChecker::at_switch(), set_container_walker::at_switch(), ref_clone_changer::at_switch(), print_walker::at_switch(), print_tree_visitor::at_switch(), and caseNode::container().

Node * switchNode::change Changer   the_changer,
bool    redispatch = false
[virtual]
 

Dispatch a Changer.

This abstract method works much the walker, but allows the tree to be changed.

Parameters:
the_changer the specific Changer object to use.
redispatch pass true to revisit parts of the tree that have changed.

Implements Node.

Definition at line 179 of file switchnode.cc.

References Changer::at_switch(), Changer::Both, blockNode::change(), Node::change(), selectionNode::expr(), Changer::order(), Changer::Order, Changer::Postorder, Changer::Preorder, and selectionNode::stmt().

virtual Node* switchNode::clone   const [inline, virtual]
 

Clone the input node.

This is not a "deep" clone, so be careful. For a deep clone, use the ref_clone_changer class.

Returns:
a shallow copy of the node (no subtrees are copied).

Implements Node.

Definition at line 5312 of file ast.h.

References switchNode().

string& stmtNode::comment   [inline, inherited]
 

Definition at line 4368 of file ast.h.

Referenced by DefUseWalker::at_basicblock(), reachingGenKillWalker::at_proc(), copyPropChanger::at_proc(), deadcodeChanger::at_threeAddr(), LivenessComments::comment_stmt(), loopTree::depthFirstSearch(), loopTree::findBody(), stmtNode::output_comment(), and Dominators::print().

void Node::coord const Coord    coord [inline, inherited]
 

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.

Parameters:
coord the new location.

Definition at line 245 of file ast.h.

Coord Node::coord   const [inline, inherited]
 

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.

Returns:
the Coord structure indicating where the node came from in the source file.

Definition at line 232 of file ast.h.

Referenced by funcNode::add_parameter_types(), Unify_Structure::all_str(), Pointers::analyze_procedure(), semcheck_expr_visitor::at_binary(), id_lookup_walker::at_binary(), ExpressionDismantle::at_binary(), ArrowDismantle::at_binary(), SelectionDismantle::at_binary(), set_container_walker::at_break(), BreakContinueChanger::at_break(), UnificationBasedPtr::at_call(), semcheck_expr_visitor::at_call(), NodeLocator::at_call(), id_lookup_walker::at_call(), ExpressionDismantle::at_call(), set_container_walker::at_case(), constantsChanger::at_conditiongoto(), set_container_walker::at_continue(), BreakContinueChanger::at_continue(), NodeLocator::at_decl(), id_lookup_walker::at_decl(), InitializerDismantle::at_decl(), LoopDismantle::at_do(), enum_value_walker::at_enum(), NodeLocator::at_expr(), ExpressionDismantle::at_exprstmt(), LoopDismantle::at_for(), goto_label_walker::at_goto(), Linker::at_id(), id_lookup_walker::at_id(), SelectionDismantle::at_if(), goto_label_walker::at_label(), id_lookup_walker::at_proc(), ReturnDismantle::at_proc(), ReturnDismantle::at_return(), NodeLocator::at_stmt(), UnificationBasedPtr::at_suespec(), semcheck_walker::at_suespec(), SelectionDismantle::at_switch(), TernaryDismantle::at_ternary(), SizeofChanger::at_threeAddr(), AllocSizeChanger::at_unary(), ExpressionDismantle::at_unary(), LoopDismantle::at_while(), Pointers::call_operator(), semcheck_expr_visitor::check_binary(), semcheck_expr_visitor::check_unary(), UnificationBasedPtr::compatible_type(), procNode::define(), exprstmtNode::exprstmtNode(), typeNode::finish(), InitializerDismantle::init_array(), InitializerDismantle::init_scalar(), InitializerDismantle::init_struct(), function_inline::inliner(), exprNode::integral_promotions(), UnificationBasedPtr::make_compatible(), reachingDefinitionsWalker::make_ud_chains(), Unify_Structure::map_str(), primNode::merge_in(), metaexprNode::metaexprNode(), metastmtNode::metastmtNode(), vcgCCGWalker::node_label(), vcgASTWalker::node_label(), vcgCCGWalker::node_title(), vcgASTWalker::node_title(), DismantleUtil::Not(), Externals_table::notify_exit_scope(), Labels_table::notify_exit_scope(), Identifiers_table::notify_exit_scope(), Pointers::pass_parameters(), vcgCCGWalker::print_edge(), vcgASTWalker::print_edge(), vcgCCGWalker::print_node(), vcgASTWalker::print_node(), stmtLocation::print_path(), procNode::procNode(), NodeInfo::readCall(), NodeInfo::readDecl(), NodeInfo::readExprOrStmt(), NodeInfo::readsuef(), Pointers::record_external_inputs_and_outputs(), P::run(), Tags_table::shadow(), Identifiers_table::shadow(), memoryBlock::top_most_containers(), suespecNode::update(), exprNode::usual_arithmetic_conversions(), CBZ::WarnAboutPrecedence(), NodeInfo::writeDecl(), NodeInfo::writeExpr(), NodeInfo::writeProc(), NodeInfo::writeStmt(), and NodeInfo::writeType().

void switchNode::dataflow FlowVal   v,
FlowProblem   fp
[virtual]
 

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.

Parameters:
v the flow value to pass through the node.
fp the flow problem (specifying the transfer functions).

Implements Node.

Definition at line 84 of file switchnode.cc.

References stmtNode::at_exit(), at_top(), FlowProblem::basicblocks(), blockNode::dataflow(), Node::dataflow(), selectionNode::expr(), FlowProblem::flow_basicblock(), FlowProblem::flow_switch(), FlowProblem::forward(), has_default(), FlowVal::meet(), FlowVal::meet_and_diff(), selectionNode::stmt(), and FlowVal::to_top().

typeNode * Node::datatype   const [inherited]
 

Call base_type() with the argument true.

Definition at line 157 of file node.cc.

References Node::base_type().

Referenced by funcNode::is_void_args().

typeNode * Node::datatype_superior   const [inherited]
 

Call base_type() with the argument false.

Definition at line 162 of file node.cc.

References Node::base_type().

void selectionNode::expr exprNode   expr [inline, inherited]
 

Definition at line 5123 of file ast.h.

exprNode* selectionNode::expr   const [inline, inherited]
 

Definition at line 5121 of file ast.h.

Referenced by vcgASTWalker::at_if(), tree_visitor::at_if(), TreeChecker::at_if(), print_walker::at_if(), print_tree_visitor::at_if(), CFS_Changer::at_if(), SelectionDismantle::at_if(), semcheck_walker::at_selection(), vcgASTWalker::at_switch(), tree_visitor::at_switch(), TreeChecker::at_switch(), print_walker::at_switch(), print_tree_visitor::at_switch(), SelectionDismantle::at_switch(), change(), ifNode::change(), dataflow(), ifNode::dataflow(), DefUseWalker::get_uses(), output_stmt(), ifNode::output_stmt(), LocalCopyPropChanger::prop(), walk(), and ifNode::walk().

void Node::gen FlowVal   g [inline, inherited]
 

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.

Parameters:
g the new gen flow value.

Definition at line 299 of file ast.h.

FlowVal* Node::gen   const [inline, inherited]
 

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.

Returns:
the "gen" flow value.

Definition at line 286 of file ast.h.

exprNode* selectionNode::get_expr   [inline, inherited]
 

Definition at line 5122 of file ast.h.

blockNode* selectionNode::get_stmt   [inline, inherited]
 

Definition at line 5126 of file ast.h.

Referenced by ifNode::get_true_br().

void switchNode::has_default bool    has_default [inline]
 

Definition at line 5288 of file ast.h.

bool switchNode::has_default   const [inline]
 

Definition at line 5287 of file ast.h.

Referenced by set_container_walker::at_case(), and dataflow().

void Node::kill FlowVal   k [inline, inherited]
 

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.

Parameters:
k the new kill flow value.

Definition at line 322 of file ast.h.

FlowVal* Node::kill   const [inline, inherited]
 

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.

Returns:
the "kill" flow value.

Definition at line 309 of file ast.h.

void stmtNode::output output_context   ct,
Node   par
[virtual, inherited]
 

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.

Parameters:
ct the output context which describes the formatting.
par the parent node (or null, if at the top of a subtree).

Implements Node.

Definition at line 55 of file stmtnode.cc.

References Block, output_context::new_line(), stmtNode::output_comment(), stmtNode::output_stmt(), and Node::typ().

Referenced by Pointers::analyze_procedure(), deadcodeChanger::at_threeAddr(), procedureInfo::block_position(), procNode::output(), whileNode::output_stmt(), output_stmt(), loopTreeNode::output_stmt(), labelNode::output_stmt(), ifNode::output_stmt(), forNode::output_stmt(), doNode::output_stmt(), caseNode::output_stmt(), precisionAnalyzer::record(), and precisionAnalyzer::report().

void stmtNode::output_comment output_context   ct [inherited]
 

Definition at line 65 of file stmtnode.cc.

References stmtNode::comment(), output_context::indent_in(), output_context::indent_out(), and output_context::new_line().

Referenced by stmtNode::output(), and blockNode::output_stmt().

void switchNode::output_stmt output_context   ct,
Node   par
[virtual]
 

Output a statement.

Implements stmtNode.

Definition at line 159 of file switchnode.cc.

References selectionNode::expr(), stmtNode::output(), exprNode::output(), output_context::space(), and selectionNode::stmt().

void Node::parenthesized bool    paren [inline, inherited]
 

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.

Parameters:
paren the new value of the parenthesized boolean.

Definition at line 264 of file ast.h.

bool Node::parenthesized   const [inline, inherited]
 

Get the parenthesized boolean.

Returns:
true if the construct corresponding to this Node was parenthesized in the source.

Definition at line 252 of file ast.h.

Referenced by exprNode::parens(), and CBZ::WarnAboutPrecedence().

text_list& stmtNode::pragmas   [inline, inherited]
 

Definition at line 4377 of file ast.h.

References text_list.

void Node::report   [static, inherited]
 

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 184 of file node.cc.

References Node::_count, Node::_t_count, Array, Attrib, Binary, Block, Break, Call, Case, Cast, Comma, Const, Continue, Decl, Do, Enum, Expr, For, Func, Goto, Id, If, Initializer, Label, Prim, Proc, Ptr, Return, Struct, sueSpec, Switch, Tdef, Ternary, Text, Unary, Undeclared, Union, and While.

void selectionNode::stmt blockNode   stmt [inline, inherited]
 

Definition at line 5127 of file ast.h.

blockNode* selectionNode::stmt   const [inline, inherited]
 

Definition at line 5125 of file ast.h.

Referenced by CFS_Changer::at_if(), cfg_changer::at_proc(), vcgASTWalker::at_switch(), tree_visitor::at_switch(), TreeChecker::at_switch(), print_walker::at_switch(), print_tree_visitor::at_switch(), change(), dataflow(), output_stmt(), ifNode::true_br(), and walk().

NodeType Node::typ   const [inline, inherited]
 

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).

Returns:
the node type.

Definition at line 218 of file ast.h.

References NodeType.

Referenced by declNode::add_parameter_types(), Pointers::analyze_procedure(), SSA::assignment(), Pointers::assignment_operator(), Assignment_walker::at_binary(), semcheck_expr_visitor::at_binary(), id_lookup_walker::at_binary(), ExpressionDismantle::at_binary(), constantAnalyzer::at_binary(), UnificationBasedPtr::at_call(), TreeChecker::at_call(), semcheck_expr_visitor::at_call(), NodeLocator::at_call(), Linker::at_call(), id_lookup_walker::at_call(), ExpressionDismantle::at_call(), ExpressionDismantle::at_cast(), constantAnalyzer::at_cast(), ExpressionDismantle::at_comma(), constantFoldingChanger::at_conditiongoto(), constantPropChanger::at_conditiongoto(), constantAnalyzer::at_const(), vcgASTWalker::at_decl(), UnificationBasedPtr::at_decl(), name_mangle_walker::at_decl(), AllocToMemWalker::at_decl(), id_lookup_walker::at_decl(), InitializerDismantle::at_decl(), remove_stale_type_walker::at_expr(), NodeLocator::at_expr(), constantPropChanger::at_expr(), FlattenDismantle::at_goto(), Linker::at_id(), callGraph::at_id(), CFS_Changer::at_if(), UnificationBasedPtr::at_initializer(), TreeChecker::at_label(), FlattenDismantle::at_label(), UnificationBasedPtr::at_proc(), LivenessWalker::at_proc(), FlattenDismantle::at_proc(), DefUseWalker::at_proc(), cfg_changer::at_proc(), unreachableCodeRemover::at_proc(), TreeChecker::at_return(), constantAnalyzer::at_sizeof(), NodeLocator::at_stmt(), print_walker::at_sue(), print_tree_visitor::at_sue(), vcgCCGWalker::at_threeAddr(), Linker::at_threeAddr(), identify_inlinees::at_threeAddr(), function_inline::at_threeAddr(), W::at_type(), ExpressionDismantle::at_unary(), fixPointerWalker::at_unary(), constantAnalyzer::at_unary(), callNode::base_type(), NodeInfo::canonical(), ipConstant::cast_operator(), semcheck_expr_visitor::check_binary(), semcheck_expr_visitor::check_unary(), UnificationBasedPtr::compatible_type(), memoryModel::create_memory_object(), UnificationBasedPtr::create_synthetic_proc(), NodeInfo::def_type(), gcWalker::delete_nodes(), Pointers::determine_call_targets(), DFPreds::DFPreds(), DominanceFrontiers::DominanceFrontiers(), memoryBlock::dot(), Pointers::dot_operator(), UnificationBasedPtr::ecr1(), typeNode::equal_to(), Pointers::eval(), castNode::eval(), typeNode::finish(), typeNode::follow_tdefs(), memoryModel::generate_array_elements_for(), DefUseWalker::get_def(), DefUseWalker::get_uses(), Register::getRegRetVal(), NodeInfo::getType(), memoryModel::initialize_struct(), function_inline::inliner(), typeNode::integral_promotions(), exprNode::integral_promotions(), labelNode::is_undeclared(), UnificationBasedPtr::is_va_list(), Pointers::is_va_list(), SSA::lhs(), Linker::link(), lir_gen_walker::load_global_value(), lir_gen_walker::load_stack_value(), LocalCopyPropChanger::local_copy_prop(), memoryModel::lookup_variable(), arch_info::make_template_replacements(), reachingDefinitionsWalker::make_ud_chains(), SSA::need_ssa(), vcgCCGWalker::node_label(), vcgCCGWalker::node_name(), vcgASTWalker::node_name(), vcgCCGWalker::node_title(), NodeInfo::nodeIndex(), operandNode::noncast_type(), DismantleUtil::Not(), Externals_table::notify_exit_scope(), Identifiers_table::notify_exit_scope(), stmtNode::output(), operandNode::output_expr(), blockNode::output_stmt(), sueNode::output_type(), ptrNode::output_type(), Pointers::pass_parameters(), SSA::phi(), SSA::place_one_phi(), vcgASTWalker::print_edge(), vcgCCGWalker::print_node(), vcgASTWalker::print_node(), procedureInfo::procedureInfo(), procNode::procNode(), LocalCopyPropChanger::prop(), LocalCopyPropChanger::prop_expr(), arrayNode::qualified_equal_to(), NodeInfo::readCall(), NodeInfo::readDecl(), NodeInfo::readExprOrStmt(), NodeInfo::readProc(), NodeInfo::readsuef(), NodeInfo::readType(), Unreachable::remove(), P::run(), dfpreds_phase::run(), ssa_phase::run(), pointers_phase::run(), SSA::search(), sueNode::set_name_fields(), Register::setType(), Unify_Size::sizeOf(), Unify_Size::sizeOfAssign(), SSA::SSA(), Pointers::star_operator(), lir_gen_walker::store_global(), lir_gen_walker::store_stack(), Pointers::struct_union_assignment(), blockNode::toBlock(), memoryBlock::top_most_containers(), P::type_name(), NodeInfo::type_name(), Unify_ECR::Unify_ECR(), typeNode::unwind_tdefs(), suespecNode::update(), typeNode::usual_arithmetic_conversions(), exprNode::usual_arithmetic_conversions(), binaryNode::walk(), CBZ::WarnAboutPrecedence(), NodeInfo::writeCall(), NodeInfo::writeExpr(), NodeInfo::writeProc(), NodeInfo::writeStmt(), and NodeInfo::writeType().

virtual typeNode* Node::type   const [inline, virtual, inherited]
 

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.

Returns:
the typeNode pointer on the node.

Reimplemented in declNode, typeNode, exprNode, and operandNode.

Definition at line 344 of file ast.h.

Referenced by tree_visitor::at_block(), ReturnDismantle::at_return(), asm_gen_walker::doCallerSave(), and briggs_reg_alloc::interfere().

void switchNode::visit Visitor   the_visitor [virtual]
 

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.

Parameters:
the_visitor the specific Visitor object to use.

Implements Node.

Definition at line 54 of file switchnode.cc.

References Visitor::at_switch().

void switchNode::walk Walker   the_walker [virtual]
 

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.

Parameters:
the_walker the specific Walker object to use.

Implements Node.

Definition at line 59 of file switchnode.cc.

References Walker::at_switch(), Walker::Both, Walker::depth(), selectionNode::expr(), Walker::order(), Walker::Order, Walker::Postorder, Walker::Preorder, selectionNode::stmt(), Walker::Subtree, blockNode::walk(), and Node::walk().


Member Data Documentation

FlowVal* switchNode::_at_top [private]
 

dataflow analysis entry value

This field is used by the dataflow analysis framework to hold the incoming flow value needed by each case statement.

Definition at line 5256 of file ast.h.

REF target_list switchNode::_cases [private]
 

the list of cases

This list includes the default case. It is initially empty, but is computer after parsing by the set_container_walker.

Definition at line 5245 of file ast.h.

bool switchNode::_has_default [private]
 

a flag that is true if the switch has a default case

Definition at line 5249 of file ast.h.

map< Node *, bool > Node::deleted_nodes [static, inherited]
 

Definition at line 116 of file node.cc.

Referenced by gcWalker::delete_nodes(), and Node::~Node().

bool Node::mark [inherited]
 

Definition at line 170 of file ast.h.

Referenced by gcWalker::at_binary(), gcWalker::at_node(), gcWalker::delete_nodes(), and SymbolTable< T >::mark_nodes().

node_list Node::nodes [static, inherited]
 

Definition at line 115 of file node.cc.

Referenced by gcWalker::delete_nodes(), gcWalker::gcWalker(), and Node::Node().


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

Generated on August 27, 2003
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