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funcNode Class Reference
[The AST nodes]

Function type node. More...

#include <ast.h>

Inheritance diagram for funcNode:

typeNode Node List of all members.

Garbage collection.

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

Public Types

enum  Type_qualifiers {
  NONE = 0x0, CONST = 0x1, VOLATILE = 0x2, INLINE = 0x4,
  COMPATIBLE = 0x3
}
 Type qualifiers. More...


Public Member Functions

 funcNode (Type_qualifiers tq, decl_list *args, typeNode *returns, const Coord coord=Coord::Unknown)
 Create a new function type.

virtual ~funcNode ()
 Destroy a funcNode.

bool qualified_equal_to (typeNode *node2, bool strict_toplevel, bool strict_recursive)
 Virtual type comparison routine.

bool is_void_args ()
 Is void argument list.

bool check_conversions ()
 Check conversions.

bool is_compatible_with (funcNode *nfunc)
 Compare two functions for compatibility.

void add_parameter_types (decl_list *types)
 Add parameter types.

virtual Node * clone () const
 Clone the input node.

virtual void output_type (output_context &ct, Node *par, Assoc context, Type_qualifiers q)
 Output a type.

typeNode * unwind_tdefs (Type_qualifiers &the_tq)
 Unwind typedefs.

typeNode * no_tdef_type ()
typeNode * follow_tdefs ()
 Follow typedefs.

virtual typeNode * usual_unary_conversion_type ()
 Usual unary conversion type.

virtual typeNode * base_type (bool TdefIndir) const
 Return the base data type of a node.

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

virtual void output (output_context &ct, Node *par)
 Generate C code.

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.

decl_list & args ()
const decl_list & args () const
typeNode * returns () const
void returns (typeNode *returns)
bool is_knr () const
void is_knr (bool v)
Type predicates
These methods support a variety of useful type predicates, most of which are self-explanatory. Each typeNode subclass overrides the methods for which it returns true. See typeNode for details.

virtual bool is_derived () const
virtual bool is_pointer () const
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 type_qualifiers_name ()
 Return a string representation of this typeNode's type qualifiers.

typeNode * type () const
 Return this typeNode's subtype.

void type (typeNode *the_type)
 Set this typeNode's subtype.

typeNode * get_type ()
 Return this typeNode's subtype, and set it to be empty.

Type_qualifiers type_qualifiers () const
 Return this typeNode's type qualifiers.

void type_qualifiers (Type_qualifiers the_tq)
 Set this typeNode's type qualifiers.

void add_type_qualifiers (Type_qualifiers the_tq)
 Add a new type qualifier to this typeNode.

typeNode * add_type_qualifiers_and (Type_qualifiers the_tq)
 Add a new type qualifier to this typeNode, and return the typeNode.

void remove_type_qualifiers (Type_qualifiers the_tq)
 Remove a type qualifier from this typeNode.

int alloc_size (void) const
 Indicates the size of memory necessary for this type.

void alloc_size (int size)
 Sets the size necessary for this type.

int alloc_align (void) const
 Indicates the word alignment necessary for this type.

void alloc_align (int align)
 Sets the alignment necessary for this type.

Parser methods
void finish ()
typeNode * finish_and ()
void set_base_type (typeNode *base)
typeNode * set_base_type_and (typeNode *base)
void verify_sue_complete ()
Type comparison operators
These operators are used to compare types. They recursively descend the compound types and verify the structure. There are several different variations, depending on the level of strictness. In all cases, typedefs are followed so they don't interfere with the comparison. All operators use the static equal_to() method.

See also:
equal_to()


bool operator== (typeNode &second)
 Strict type comparison.

bool operator<= (typeNode &second)
 Weaker type comparison.

bool operator!= (typeNode &second)
 Strict type inequality.

Type predicates
These methods support a variety of useful type predicates, most of which are self-explanatory. Each typeNode subclass overrides the methods for which it returns true.

virtual bool is_char () const
virtual bool is_int () const
virtual bool is_float () const
virtual bool is_void () const
virtual bool is_ellipsis () const
virtual bool is_integer () const
virtual bool is_arithmetic () const
virtual bool is_scalar () const
virtual bool is_aggregate () const
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

string type_qualifiers_name (Type_qualifiers tq)
 Convert type qualifiers to string.

typeNode * integral_promotions (typeNode *old_type)
 Integral promotions.

pair< typeNode *, typeNode * > usual_arithmetic_conversions (typeNode *left, typeNode *right)
 Usual arithmetic conversions.

bool equal_to (typeNode *first, typeNode *second, bool strict_toplevel, bool strict_recursive)
 Type comparison.

void report ()
 Report node count statistics.


Private Attributes

TREE decl_list _args
 Formal parameters.

bool _is_knr
 K-and-R style.

Detailed Description

Function type node.

This class represents function types. It is used for both procedure definitions, and for declaring variables of type pointer-to-function. The sub-type is used to hold the return type of the function.

The NodeType is Func.

Definition at line 2484 of file ast.h.

Member Enumeration Documentation

enum typeNode::Type_qualifiers [inherited]
 

Type qualifiers.

This enum holds the possible type qualifiers. The special COMPATIBLE value indicates which type qualifiers are relevant when comparing two types for compatibility: const and volatile.

Enumeration values:
NONE  No type qualifier
CONST  Type is const
VOLATILE  Type is volatile
INLINE  Type is inline
COMPATIBLE  Mask the qualifiers that are relevant to type compatibility

Definition at line 1642 of file ast.h.

Referenced by typeNode::add_type_qualifiers(), typeNode::equal_to(), typeNode::finish(), typeNode::remove_type_qualifiers(), and typeNode::unwind_tdefs().

Constructor & Destructor Documentation

funcNode::funcNode (  Type_qualifiers    tq,
decl_list *    args,
typeNode *    returns,
const Coord    coord = Coord::Unknown
) 
 

Create a new function type.

The new function type has the given type qualifiers, argument list and return type.

Parameters:
tq the type qualifiers
args the arguments, which are removed and the list deleted
returns the return type
coord the location of the construct in the source file.

Definition at line 45 of file funcnode.cc.

References _args, and Func.

Referenced by clone().

funcNode::~funcNode (    )  [virtual]
 

Destroy a funcNode.

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

Definition at line 512 of file funcnode.cc.

Member Function Documentation

void funcNode::add_parameter_types (  decl_list *    types ) 
 

Add parameter types.

Definition at line 311 of file funcnode.cc.

References args(), Node::coord(), decl_list, decl_list_p, declNode::name(), CBZ::SyntaxError(), declNode::type(), and CBZ::Warning().

Referenced by declNode::add_parameter_types().

void typeNode::add_type_qualifiers (  Type_qualifiers    the_tq )  [inline, inherited]
 

Add a new type qualifier to this typeNode.

Definition at line 1783 of file ast.h.

References typeNode::Type_qualifiers.

Referenced by typeNode::add_type_qualifiers_and(), and typeNode::finish().

typeNode* typeNode::add_type_qualifiers_and (  Type_qualifiers    the_tq )  [inline, inherited]
 

Add a new type qualifier to this typeNode, and return the typeNode.

Definition at line 1789 of file ast.h.

References typeNode::add_type_qualifiers().

void typeNode::alloc_align (  int    align )  [inline, inherited]
 

Sets the alignment necessary for this type.

Definition at line 1807 of file ast.h.

int typeNode::alloc_align (  void    )  const [inline, inherited]
 

Indicates the word alignment necessary for this type.

Definition at line 1804 of file ast.h.

Referenced by procNode::alloc_stack_local(), storage_alloc::assign_arg_stack(), AllocSizeChanger::at_array(), AllocSizeChanger::at_enum(), AllocSizeChanger::at_prim(), AllocSizeChanger::at_ptr(), AllocSizeChanger::at_struct(), AllocSizeChanger::at_tdef(), AllocSizeChanger::at_union(), asm_gen_walker::createTempForRegSave(), LIR::DeclareGlobal(), lir_gen_walker::field_offset(), and lir_gen_walker::gen_call().

void typeNode::alloc_size (  int    size )  [inline, inherited]
 

Sets the size necessary for this type.

Definition at line 1801 of file ast.h.

int typeNode::alloc_size (  void    )  const [inline, inherited]
 

Indicates the size of memory necessary for this type.

Definition at line 1798 of file ast.h.

Referenced by procNode::alloc_stack_local(), storage_alloc::assign_arg_stack(), AllocSizeChanger::at_array(), AllocSizeChanger::at_enum(), AllocSizeChanger::at_prim(), AllocSizeChanger::at_ptr(), AllocSizeChanger::at_struct(), AllocSizeChanger::at_tdef(), SizeofChanger::at_threeAddr(), AllocSizeChanger::at_unary(), AllocSizeChanger::at_union(), asm_gen_walker::createTempForRegSave(), LIR::DeclareGlobal(), lir_gen_walker::gen_binary_assignment(), lir_gen_walker::gen_call(), lir_gen_walker::gen_global_decl(), and lir_gen_walker::index_offset().

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.

const decl_list& funcNode::args (    )  const [inline]
 

Definition at line 2543 of file ast.h.

References decl_list.

decl_list& funcNode::args (    )  [inline]
 

Definition at line 2542 of file ast.h.

References decl_list.

Referenced by add_parameter_types(), UnificationBasedPtr::at_call(), vcgASTWalker::at_func(), tree_visitor::at_func(), TreeChecker::at_func(), UnificationBasedPtr::at_proc(), UnitWalker::at_proc(), name_mangle_walker::at_proc(), LivenessWalker::at_proc(), lir_gen_walker::at_proc(), id_lookup_walker::at_proc(), change(), check_conversions(), function_inline::inliner(), is_compatible_with(), is_void_args(), output_type(), Pointers::pass_parameters(), procNode::procNode(), qualified_equal_to(), and walk().

virtual typeNode* typeNode::base_type (  bool    TdefIndir )  const [inline, 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 from Node.

Reimplemented in tdefNode.

Definition at line 1972 of file ast.h.

Referenced by tdefNode::base_type(), idNode::base_type(), exprNode::base_type(), declNode::base_type(), and callNode::base_type().

Node * funcNode::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 474 of file funcnode.cc.

References args(), Changer::at_func(), Changer::Both, Node::change(), change_list(), Changer::order(), Changer::Order, Changer::Postorder, Changer::Preorder, and returns().

bool funcNode::check_conversions (    ) 
 

Check conversions.

This method may be obsolete. It just calls typeNode::usual_unary_conversion_type() on each argument, returning false if any of the resulting types are incompatible with the original types.

Definition at line 165 of file funcnode.cc.

References args(), decl_list, decl_list_p, and typeNode::usual_unary_conversion_type().

Referenced by is_compatible_with().

virtual Node* funcNode::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 2622 of file ast.h.

References funcNode().

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 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().

virtual void typeNode::dataflow (  FlowVal *    v,
FlowProblem &    fp
)  [inline, virtual, inherited]
 

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 1982 of file ast.h.

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 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().

typeNode * typeNode::deep_base_type (    )  [inherited]
 

Definition at line 57 of file typenode.cc.

References typeNode::is_derived(), and typeNode::type().

Referenced by typeNode::finish(), and declNode::inherit_type().

bool typeNode::equal_to (  typeNode *    first,
typeNode *    second,
bool    strict_toplevel,
bool    strict_recursive
)  [static, inherited]
 

Type comparison.

This static method compares two types, descending into the subtypes and following typedefs as necessary. The two boolean arguments control how strict the algorithm is with respect to type qualifiers. Passing true requires all type qualifiers to be the same. Passing false only requires those type qualifiers that affect compatibility to be the same. (Was TypeEqualQualified in type.c)

This routine relies on the qualified_equal_to() methods on each kind of typeNode to perform the appropriate comparison and dispatch to the sub-type when necessary.

See also:
qualified_equal_to()
Parameters:
first the first type
second the second type
strict_toplevel pass true to require strict comparison of top-level types
strict_recursive pass true to require strict comparson of sub-types
Returns:
true, if the types pass the equality test

Definition at line 215 of file typenode.cc.

References Array, typeNode::NONE, Ptr, typeNode::qualified_equal_to(), Node::typ(), typeNode::Type_qualifiers, and typeNode::unwind_tdefs().

Referenced by typeNode::operator<=(), typeNode::operator==(), ptrNode::qualified_equal_to(), qualified_equal_to(), and arrayNode::qualified_equal_to().

void typeNode::finish (    )  [inherited]
 

Reimplemented in primNode.

Definition at line 116 of file typenode.cc.

References typeNode::add_type_qualifiers(), Node::coord(), typeNode::deep_base_type(), Func, typeNode::INLINE, typeNode::remove_type_qualifiers(), CBZ::SyntaxError(), Node::typ(), typeNode::type_qualifiers(), typeNode::Type_qualifiers, and CBZ::Warning().

Referenced by declNode::finish(), and typeNode::finish_and().

typeNode * typeNode::finish_and (    )  [inherited]
 

Reimplemented in primNode.

Definition at line 137 of file typenode.cc.

References typeNode::finish().

typeNode * typeNode::follow_tdefs (    )  [inherited]
 

Follow typedefs.

Follow the chain of typedefs from this type, returning the underlying (non-typedef) type.

Returns:
the type at the end of the typedef chain

Definition at line 167 of file typenode.cc.

References tdefNode::def(), Tdef, and Node::typ().

Referenced by UnificationBasedPtr::at_call(), UnificationBasedPtr::at_initializer(), Linker::at_threeAddr(), Pointers::eval(), lir_gen_walker::field_offset(), typeNode::no_tdef_type(), declNode::no_tdef_type(), exprNode::no_tdef_type(), operandNode::noncast_type(), and Unify_Size::sizeOfAssign().

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.

typeNode* typeNode::get_type (    )  [inline, inherited]
 

Return this typeNode's subtype, and set it to be empty.

Definition at line 1761 of file ast.h.

typeNode * typeNode::integral_promotions (  typeNode *    old_type )  [static, inherited]
 

Integral promotions.

This method is used during parsing to convert smaller types (char, short, bit-fields and enums) into integers according to the rules in ANSI 6.2.1.1. In addition, our version converts float into double.

See also:
exprNode::integral_promotions()
Parameters:
old_type the original small type to be promoted
Returns:
the resulting integral type

Definition at line 288 of file typenode.cc.

References primNode::basic(), basic_type::is_char(), basic_type::is_float(), basic_type::is_int(), basic_type::is_short(), basic_type::is_unsigned(), Prim, and Node::typ().

Referenced by exprNode::integral_promotions(), and typeNode::usual_arithmetic_conversions().

virtual bool typeNode::is_aggregate (    )  const [inline, virtual, inherited]
 

Reimplemented in arrayNode, and structNode.

Definition at line 1956 of file ast.h.

Referenced by AllocToMemWalker::at_decl(), InitializerDismantle::at_decl(), lir_gen_walker::gen_global_decl(), arch_info::get_data_align(), and LirUtil::getTypeString().

virtual bool typeNode::is_arithmetic (    )  const [inline, virtual, inherited]
 

Reimplemented in primNode, and enumNode.

Definition at line 1954 of file ast.h.

Referenced by semcheck_expr_visitor::check_binary(), and semcheck_expr_visitor::check_unary().

virtual bool typeNode::is_char (    )  const [inline, virtual, inherited]
 

Reimplemented in primNode.

Definition at line 1947 of file ast.h.

Referenced by LIR::Call(), arrayNode::is_string(), and Register::setType().

bool funcNode::is_compatible_with (  funcNode *    nfunc ) 
 

Compare two functions for compatibility.

From ANSI 6.5.4.3, this method compares two function types for compatibility. This is the basis for the type comparison of this type. See the ANSI standard for the rules.

Parameters:
nfunc the other function type to compare against
Returns:
true if they are compatible

Definition at line 193 of file funcnode.cc.

References args(), check_conversions(), decl_list, decl_list_p, declNode::decl_location(), is_void_args(), and returns().

Referenced by id_lookup_walker::at_decl().

virtual bool funcNode::is_derived (    )  const [inline, virtual]
 

Reimplemented from typeNode.

Definition at line 2565 of file ast.h.

virtual bool typeNode::is_ellipsis (    )  const [inline, virtual, inherited]
 

Reimplemented in primNode.

Definition at line 1951 of file ast.h.

Referenced by UnificationBasedPtr::at_decl(), lir_gen_walker::gen_arg_decl(), memoryBlock::generate_su_field_name(), LirUtil::getTypeString(), memoryBlock::name(), Pointers::pass_parameters(), and UnificationBasedPtr::print_ecr().

virtual bool typeNode::is_float (    )  const [inline, virtual, inherited]
 

Reimplemented in primNode.

Definition at line 1949 of file ast.h.

Referenced by dummy_reg_alloc::allocate_real_for_virtual(), storage_alloc::assign_arg_register(), AllocToMemWalker::at_operand(), LIR::BitwiseAND(), LIR::BitwiseNOT(), LIR::BitwiseOR(), LIR::BitwiseRotateLeft(), LIR::BitwiseRotateRight(), LIR::BitwiseShiftLeft(), LIR::BitwiseShiftRight(), LIR::BitwiseXOR(), LIR::Call(), asm_gen_walker::doCallerSave(), Register::getRegRetVal(), briggs_reg_alloc::interfere(), LIR::Mod(), and Register::setType().

virtual bool typeNode::is_int (    )  const [inline, virtual, inherited]
 

Reimplemented in primNode, and enumNode.

Definition at line 1948 of file ast.h.

Referenced by LIR::Call(), and Register::setType().

virtual bool typeNode::is_integer (    )  const [inline, virtual, inherited]
 

Reimplemented in primNode, and enumNode.

Definition at line 1953 of file ast.h.

Referenced by storage_alloc::assign_arg_register(), semcheck_expr_visitor::at_binary(), AllocToMemWalker::at_operand(), semcheck_expr_visitor::check_binary(), semcheck_expr_visitor::check_unary(), asm_gen_walker::doCallerSave(), Register::getRegRetVal(), and briggs_reg_alloc::interfere().

void funcNode::is_knr (  bool    v )  [inline]
 

Definition at line 2549 of file ast.h.

bool funcNode::is_knr (    )  const [inline]
 

Definition at line 2548 of file ast.h.

Referenced by output_type().

virtual bool funcNode::is_pointer (    )  const [inline, virtual]
 

Reimplemented from typeNode.

Definition at line 2566 of file ast.h.

virtual bool typeNode::is_scalar (    )  const [inline, virtual, inherited]
 

Reimplemented in primNode, ptrNode, arrayNode, and enumNode.

Definition at line 1955 of file ast.h.

Referenced by InitializerDismantle::at_decl(), semcheck_expr_visitor::check_binary(), semcheck_expr_visitor::check_unary(), lir_gen_walker::gen_call_assignment(), and lir_gen_walker::gen_simple_assignment().

virtual bool typeNode::is_void (    )  const [inline, virtual, inherited]
 

Reimplemented in primNode.

Definition at line 1950 of file ast.h.

Referenced by UnificationBasedPtr::at_call(), ExpressionDismantle::at_call(), ExpressionDismantle::at_cast(), UnificationBasedPtr::at_proc(), ReturnDismantle::at_proc(), TernaryDismantle::at_ternary(), semcheck_expr_visitor::check_binary(), lir_gen_walker::gen_arg_decl(), Register::getRegRetVal(), LirUtil::getTypeString(), and is_void_args().

bool funcNode::is_void_args (    ) 
 

Is void argument list.

Returns:
true if the argument list is void

Definition at line 119 of file funcnode.cc.

References args(), Node::datatype(), decl_list, and typeNode::is_void().

Referenced by UnitWalker::at_proc(), function_inline::inliner(), is_compatible_with(), and Pointers::pass_parameters().

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.

typeNode * typeNode::no_tdef_type (    )  [inherited]
 

Definition at line 156 of file typenode.cc.

References typeNode::follow_tdefs(), and typeNode::type().

Referenced by Pointers::assignment_operator(), id_lookup_walker::at_binary(), semcheck_expr_visitor::at_call(), UnificationBasedPtr::at_decl(), UnificationBasedPtr::at_initializer(), semcheck_expr_visitor::check_binary(), memoryModel::create_memory_object(), Pointers::dot_operator(), memoryModel::generate_array_elements_for(), InitializerDismantle::init_array(), Pointers::star_operator(), and memoryBlock::top_most_containers().

bool typeNode::operator!= (  typeNode &    second )  [inline, inherited]
 

Strict type inequality.

This is just a negation of the operator==

Parameters:
second the right type in the comparison
Returns:
true if the types are the same

Definition at line 1874 of file ast.h.

bool typeNode::operator<= (  typeNode &    second )  [inline, inherited]
 

Weaker type comparison.

Compare this type to the given type, masking off type qualifiers that don't affect compatibility of types.

See also:
Type_qualifiers
Parameters:
second the right type in the comparison
Returns:
true if the types are the same

Definition at line 1864 of file ast.h.

References typeNode::equal_to().

bool typeNode::operator== (  typeNode &    second )  [inline, inherited]
 

Strict type comparison.

Compare this type to the given type, requiring all type qualifiers to be the same.

Parameters:
second the right type in the comparison
Returns:
true if the types are the same

Definition at line 1852 of file ast.h.

References typeNode::equal_to().

void typeNode::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 444 of file typenode.cc.

References typeNode::output_type(), and typeNode::type_qualifiers().

Referenced by unaryNode::output_expr(), operandNode::output_expr(), castNode::output_expr(), and threeAddrNode::output_stmt().

void funcNode::output_type (  output_context &    ct,
Node *    par,
Assoc    context,
Type_qualifiers    q
)  [virtual]
 

Output a type.

Implements typeNode.

Definition at line 429 of file funcnode.cc.

References args(), decl_list_p, is_knr(), Left, output_delim_list(), typeNode::output_type(), returns(), output_context::space(), and typeNode::type_qualifiers_name().

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().

bool funcNode::qualified_equal_to (  typeNode *    node2,
bool    strict_toplevel,
bool    strict_recursive
)  [virtual]
 

Virtual type comparison routine.

Each typeNode subclass overrides this routine to provide its specific type comparison. This is used by the static equal_to() method to perform general deep type comparison.

See also:
equal_to()
Parameters:
other the type to compare against
strict_toplevel pass true to require strict comparison of top-level types
strict_recursive pass true to require strict comparson of sub-types
Returns:
true, if the types pass the equality test

Reimplemented from typeNode.

Definition at line 61 of file funcnode.cc.

References args(), Decl, decl_list, decl_list_p, typeNode::equal_to(), returns(), and typeNode::type().

void typeNode::remove_type_qualifiers (  Type_qualifiers    the_tq )  [inline, inherited]
 

Remove a type qualifier from this typeNode.

Definition at line 1794 of file ast.h.

References typeNode::Type_qualifiers.

Referenced by typeNode::finish().

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 funcNode::returns (  typeNode *    returns )  [inline]
 

Definition at line 2546 of file ast.h.

References typeNode::type().

typeNode* funcNode::returns (    )  const [inline]
 

Definition at line 2545 of file ast.h.

References typeNode::type().

Referenced by UnificationBasedPtr::at_call(), vcgASTWalker::at_func(), tree_visitor::at_func(), TreeChecker::at_func(), UnificationBasedPtr::at_proc(), ReturnDismantle::at_proc(), change(), is_compatible_with(), output_type(), qualified_equal_to(), and walk().

void typeNode::set_base_type (  typeNode *    base )  [inherited]
 

Definition at line 86 of file typenode.cc.

References typeNode::is_derived(), and typeNode::type().

Referenced by declNode::modify_type(), and typeNode::set_base_type_and().

typeNode * typeNode::set_base_type_and (  typeNode *    base )  [inherited]
 

Definition at line 99 of file typenode.cc.

References typeNode::set_base_type().

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().

void typeNode::type (  typeNode *    the_type )  [inline, inherited]
 

Set this typeNode's subtype.

To set the subtype to be empty, call this method with a value of NULL.

Definition at line 1768 of file ast.h.

typeNode* typeNode::type (    )  const [inline, virtual, inherited]
 

Return this typeNode's subtype.

Reimplemented from Node.

Definition at line 1756 of file ast.h.

Referenced by vcgASTWalker::at_array(), tree_visitor::at_array(), AllocSizeChanger::at_array(), semcheck_expr_visitor::at_binary(), UnificationBasedPtr::at_call(), ReturnDismantle::at_proc(), vcgASTWalker::at_ptr(), tree_visitor::at_ptr(), callNode::base_type(), LIR::Call(), NodeInfo::canonical(), ptrNode::change(), arrayNode::change(), semcheck_expr_visitor::check_binary(), semcheck_expr_visitor::check_unary(), UnificationBasedPtr::compatible_type(), typeNode::deep_base_type(), UnificationBasedPtr::ecr(), Pointers::eval(), lir_gen_walker::field_offset(), lir_gen_walker::gen_binary_assignment(), memoryModel::generate_array_elements_for(), InitializerDismantle::init_array(), arrayNode::is_string(), UnificationBasedPtr::make_compatible(), DismantleUtil::new_temp_decl(), typeNode::no_tdef_type(), operandNode::noncast_type(), ptrNode::output_type(), arrayNode::output_type(), ptrNode::qualified_equal_to(), qualified_equal_to(), arrayNode::qualified_equal_to(), NodeInfo::readsuef(), returns(), typeNode::set_base_type(), Unify_Size::sizeOf(), Unify_ECR::Unify_ECR(), Unify_Structure::Unify_Structure(), ptrNode::walk(), arrayNode::walk(), and NodeInfo::writeType().

void typeNode::type_qualifiers (  Type_qualifiers    the_tq )  [inline, inherited]
 

Set this typeNode's type qualifiers.

Definition at line 1776 of file ast.h.

Type_qualifiers typeNode::type_qualifiers (    )  const [inline, inherited]
 

Return this typeNode's type qualifiers.

Definition at line 1772 of file ast.h.

Referenced by identify_inlinees::at_threeAddr(), semcheck_expr_visitor::check_binary(), typeNode::finish(), typeNode::output(), typeNode::type_qualifiers_name(), and typeNode::unwind_tdefs().

string typeNode::type_qualifiers_name (    )  [inline, inherited]
 

Return a string representation of this typeNode's type qualifiers.

Definition at line 1779 of file ast.h.

References typeNode::type_qualifiers().

Referenced by tdefNode::output_type(), sueNode::output_type(), ptrNode::output_type(), primNode::output_type(), and output_type().

string typeNode::type_qualifiers_name (  Type_qualifiers    tq )  [static, inherited]
 

Convert type qualifiers to string.

This method is used when generating C code to convert the type qualifiers into string form.

Parameters:
tq the type qualifiers to convert
Returns:
the string form of the type qualifiers

Definition at line 257 of file typenode.cc.

References typeNode::CONST, typeNode::INLINE, and typeNode::VOLATILE.

Referenced by print_walker::at_array(), print_tree_visitor::at_array(), print_walker::at_func(), print_tree_visitor::at_func(), print_walker::at_prim(), print_tree_visitor::at_prim(), print_walker::at_ptr(), print_tree_visitor::at_ptr(), print_walker::at_suespec(), print_tree_visitor::at_suespec(), print_walker::at_tdef(), and print_tree_visitor::at_tdef().

typeNode * typeNode::unwind_tdefs (  Type_qualifiers &    the_tq )  [inherited]
 

Unwind typedefs.

Definition at line 194 of file typenode.cc.

References tdefNode::def(), Tdef, Node::typ(), typeNode::Type_qualifiers, and typeNode::type_qualifiers().

Referenced by typeNode::equal_to().

pair< typeNode *, typeNode * > typeNode::usual_arithmetic_conversions (  typeNode *    left,
typeNode *    right
)  [static, inherited]
 

Usual arithmetic conversions.

From ANSI 6.2.1.5: Many binary operators that expect operands of arithmetic type cause conversions and yield result types in a similar way. The purpose is to yield a common type, which is also the type of the result.

This method takes the types of the left and right operands and returns a pair of types indicating the conversions of the two operands, respectively. When necessary, these conversion include the integral promotions.

See also:
integral_promotions()

exprNode::usual_arithmetic_conversions()

Parameters:
left the type of the left operand
right the type of the right operand
Returns:
a pair of converted types for the left and right, respectively

Definition at line 319 of file typenode.cc.

References basic_type::Double, basic_type::Float, typeNode::integral_promotions(), basic_type::LongDouble, Prim, basic_type::SLong, Node::typ(), basic_type::UInt, and basic_type::ULong.

Referenced by exprNode::usual_arithmetic_conversions().

virtual typeNode* typeNode::usual_unary_conversion_type (    )  [inline, virtual, inherited]
 

Usual unary conversion type.

The purpose of this method escapes me. The constNode class seems to use it, but all it does is return itself. No other typeNode overrides it.

Definition at line 1968 of file ast.h.

Referenced by check_conversions(), and constNode::usual_unary_conversion_type().

void typeNode::verify_sue_complete (    )  [inherited]
 

Definition at line 147 of file typenode.cc.

References sue_complete_walker::check().

Referenced by declNode::finish().

void funcNode::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 400 of file funcnode.cc.

References Visitor::at_func().

void funcNode::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 405 of file funcnode.cc.

References args(), Walker::at_func(), Walker::Both, Walker::depth(), list_walker(), Walker::order(), Walker::Order, Walker::Postorder, Walker::Preorder, returns(), Walker::Subtree, and Node::walk().

Member Data Documentation

TREE decl_list funcNode::_args [private]
 

Formal parameters.

This list contains the declarations of the formal parameters to the function. There are several special kinds of arguments:

  • An empty list of arguments. This indicates a function declaration that does not specify the input parameters.
  • A list with one argument and that argument is a declaration with no name and primitive type void. This indicates a function that takes no arguments.
  • Arguments with types, but no names. These are abstract declarators.
  • The last argument has primitive type ellipsis and no name. This indicates a variable argument function, such as printf.

The class provides methods to conveniently check for these cases.

Definition at line 2507 of file ast.h.

Referenced by funcNode().

bool funcNode::_is_knr [private]
 

K-and-R style.

True if the function type was parsed from an old K-and-R style declaration (argument types separate from the argument list).

Definition at line 2513 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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