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exprstmtNode Class Reference [The AST nodes] Expression statement. More... #include <ast.h> Inheritance diagram for exprstmtNode: List of all members. Garbage collection. bool  mark node_list  nodes map< Node *, bool >  deleted_nodes Public Member Functions   exprstmtNode (exprNode *expr)   Create an expression statement. virtual  ~exprstmtNode ()   Destroy a exprstmtNode. typeNode *  base_type (bool TdefIndir) const   Return the base data type of a node. 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. 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. exprNode *  expr () const exprNode *  get_expr () void  expr (exprNode *expr) 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 Node *  change (Changer &the_changer, bool redispatch=false)   Dispatch a Changer. Accessors Methods to get and set fields in the class. string &  comment () FlowVal *  at_exit () const void  at_exit (FlowVal *ae) text_list &  pragmas () 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 void  report ()   Report node count statistics. Private Attributes TREE exprNode *  _expr   the expression Detailed Description Expression statement. This class represent simple statements that just consist of an expression. This is just a wrapper that makes explicit that fact that any expression is also a statement. The NodeType is Expr Definition at line 4715 of file ast.h. Constructor & Destructor Documentation exprstmtNode::exprstmtNode (  exprNode *    expr )    Create an expression statement. The new statement has the given expression Parameters: expr  the expression Definition at line 44 of file exprstmtnode.cc. References Node::coord(), expr(), and Expr. Referenced by clone(). exprstmtNode::~exprstmtNode (    )  [virtual]   Destroy a exprstmtNode. Warning: Do not use the destructors to delete AST nodes. Instead, rely on the node garbage collector. Definition at line 174 of file exprstmtnode.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(), switchNode::dataflow(), returnNode::dataflow(), forNode::dataflow(), doNode::dataflow(), and breakNode::dataflow(). typeNode * exprstmtNode::base_type (  bool    TdefIndir )  const [virtual]   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 from Node. Definition at line 56 of file exprstmtnode.cc. References exprNode::base_type(), and expr(). Node * exprstmtNode::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 138 of file exprstmtnode.cc. References Changer::at_exprstmt(), Changer::Both, Node::change(), expr(), Changer::order(), Changer::Order, Changer::Postorder, and Changer::Preorder. Referenced by ExpressionDismantle::at_exprstmt(). virtual Node* exprstmtNode::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 4774 of file ast.h. References exprstmtNode(). 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(), 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 exprstmtNode::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 92 of file exprstmtnode.cc. References FlowProblem::basicblocks(), Node::dataflow(), expr(), FlowProblem::flow_basicblock(), FlowProblem::flow_exprstmt(), and FlowProblem::forward(). 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 exprstmtNode::expr (  exprNode *    expr )  [inline]   Definition at line 4748 of file ast.h. exprNode* exprstmtNode::expr (    )  const [inline]   Definition at line 4746 of file ast.h. Referenced by SelectionDismantle::at_binary(), vcgASTWalker::at_exprstmt(), tree_visitor::at_exprstmt(), semcheck_walker::at_exprstmt(), print_walker::at_exprstmt(), print_tree_visitor::at_exprstmt(), FlattenDismantle::at_exprstmt(), ExpressionDismantle::at_exprstmt(), SelectionDismantle::at_if(), TreeChecker::at_label(), LabelDismantle::at_label(), ReturnDismantle::at_return(), SelectionDismantle::at_switch(), TernaryDismantle::at_ternary(), ExpressionDismantle::at_unary(), base_type(), change(), SelectionDismantle::comparison_operand(), dataflow(), exprstmtNode(), DefUseWalker::get_def(), DefUseWalker::get_uses(), LocalCopyPropChanger::local_copy_prop(), output_stmt(), LocalCopyPropChanger::prop(), and 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* exprstmtNode::get_expr (    )  [inline]   Definition at line 4747 of file ast.h. 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(), switchNode::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 exprstmtNode::output_stmt (  output_context &    ct, Node *    par )  [virtual]   Output a statement. Implements stmtNode. Definition at line 126 of file exprstmtnode.cc. References expr(), and exprNode::output(). 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. 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 exprstmtNode::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 65 of file exprstmtnode.cc. References Visitor::at_exprstmt(). void exprstmtNode::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 70 of file exprstmtnode.cc. References Walker::at_exprstmt(), Walker::Both, Walker::depth(), expr(), Walker::order(), Walker::Order, Walker::Postorder, Walker::Preorder, Walker::Subtree, and Node::walk(). Member Data Documentation TREE exprNode* exprstmtNode::_expr [private]   the expression Definition at line 4722 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: ast.h exprstmtnode.cc

Generated on August 27, 2003
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