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Main Page | Modules | Namespace List | Class Hierarchy | Alphabetical List | Class List | Directories | File List | Namespace Members | Class Members | File Members | Related Pages
unitNode Class ReferenceHolds the AST of one translation unit.
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Garbage collection. | |
bool | mark |
static node_list | nodes |
static map< Node *, bool > | deleted_nodes |
Public Member Functions | |
unitNode (string input_file, string output_file, string obj_file, const Coord coord=Coord::Unknown) | |
Create a new translation unit from a source file. | |
virtual | ~unitNode () |
Destroy a unitNode. | |
void | parse (str_list *cpp_flags, bool abortOnError=true) |
Parse the input file. | |
void | fixup () |
Run fixup passes. | |
void | merge_in (def_list *defs) |
Merge in external definitions. | |
void | enter_scope () |
Enter a new scope. | |
void | exit_scope () |
Exit scope. | |
void | enter_pragmas () |
Enter a new pragma depth. | |
void | exit_pragmas () |
Exit s pragma depth. | |
virtual void | dataflow (FlowVal *v, FlowProblem &fp) |
Run the dataflow analyzer. | |
virtual Node * | clone () const |
Clone the input node. | |
virtual void | output (output_context &ct, Node *par) |
Generate C code. | |
virtual typeNode * | type () const |
Return the node data type. | |
virtual typeNode * | base_type (bool TdefIndir) const |
Return the base data type of a node. | |
typeNode * | datatype () const |
Call base_type() with the argument true. | |
typeNode * | datatype_superior () const |
Call base_type() with the argument false. | |
Accessors | |
Methods to get and set fields in the class. | |
def_list & | defs () |
const def_list & | defs () const |
int | symbol_level () const |
int | pragma_level () const |
Identifiers_table * | types () const |
Tags_table * | tags () const |
string & | input_file () |
string & | output_file () |
string & | obj_file () |
int | errors () const |
void | inc_errors () |
int | warnings () const |
void | inc_warnings () |
decl_list & | undef_funcs () |
suespec_list & | suespecs () |
text_list & | pragmas () |
AST Traversal | |
virtual void | visit (Visitor *the_visitor) |
Dispatch a Visitor. | |
virtual void | walk (Walker &the_walker) |
Dispatch a Walker. | |
virtual Node * | change (Changer &the_changer, bool redispatch=false) |
Dispatch a Changer. | |
Accessors | |
Methods to get and set fields in the class. | |
NodeType | typ () const |
Get the node type. | |
Coord | coord () const |
Get the source location. | |
void | coord (const Coord coord) |
Set the source location. | |
bool | parenthesized () const |
Get the parenthesized boolean. | |
void | parenthesized (bool paren) |
Set the parenthesized boolean. | |
annote_list & | annotations () |
Get the annotations list. | |
FlowVal * | gen () const |
Get the "gen" flow value. | |
void | gen (FlowVal *g) |
Set the "gen" flow value. | |
FlowVal * | kill () const |
Get the "kill" flow value. | |
void | kill (FlowVal *k) |
Set the "kill" flow value. | |
Static Public Member Functions | |
static void | report () |
Report node count statistics. | |
Private Member Functions | |
FILE * | _open_input_file (str_list *cpp_flags) |
Open the input file. | |
Private Attributes | |
TREE def_list | _defs |
The external definitions. | |
int | _symbol_level |
Depth of the scope. | |
int | _pragma_level |
Depth for pragmas. | |
Identifiers_table * | _types |
Table of type names. | |
Tags_table * | _tags |
Table of struct/union tags. | |
string | _input_file |
Source file name. | |
string | _output_file |
The output file name. | |
string | _obj_file |
The object output file name. | |
int | _errors |
The number of errors. | |
int | _warnings |
The number of warnings. | |
TREE decl_list | _undef_funcs |
Undeclared functions. | |
TREE suespec_list | _suespecs |
struct/enum/union contents | |
text_list | _pragmas |
Pragmas. |
A translation unit corresponds to a single input source file (with all header files included). To parse a source file in, create a unitNode and then call the parse() method. However, this is typically done by the main driver, which also handles the flags provided on the command line.
All instances of unitNode created by the main driver are stored in a global list in the CBZ class.
The NodeType is Unit.
In addition to containing the AST for the code, unitNode contains auxillary information gathered during the parsing. This includes:
Definition at line 467 of file ast.h.
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Create a new translation unit from a source file. Instantiate a new unitNode with the given input and output source file names. This is typically done automatically by the front-end driver.
Referenced by clone(). |
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Destroy a unitNode.
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Open the input file.
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Get the annotations list. This method returns a modifiable reference to the list of annotations on the node. Users can add new annotations, search for annotations, or remove annotations. Users are responsible for ensuring that every element of the annotation list points to a valid annotation. In particular, no element should be NULL.
Definition at line 274 of file ast.h. References Node::_annotations. |
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Return the base data type of a node. This method differs from the Node::type() method in two respects. First, it follows some of the simple type inferences. For example, calling it on an idNode will return the type of its declaration. Second, the boolean argument indicates whether or not to follow typedef links.
Reimplemented in declNode, procNode, typeNode, tdefNode, exprNode, idNode, commaNode, callNode, blockNode, and exprstmtNode. |
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Dispatch a Changer. This abstract method works much the walker, but allows the tree to be changed.
Implements Node. Referenced by constantsChanger::optimize(). |
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Clone the input node. This is not a "deep" clone, so be careful. For a deep clone, use the ref_clone_changer class.
Implements Node. Definition at line 708 of file ast.h. References unitNode(). |
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Set the source location. This location should indicate the position in the source text that this Node represents, or Coord::Unknown if it does not represent any node in the source text. It is not common to set the source location of a node. Currently, only the compiler error messages actually make use of it.
Definition at line 243 of file ast.h. References Node::_coord. |
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Get the source location. The Coord class holds a location in the input source (file, line, position). During parsing, each AST node created records the position of the source text that it represents. However, subsequent phases may create or change nodes, so no guarantee is given about how the source location corresponds to the original source text.
Definition at line 230 of file ast.h. References Node::_coord. |
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Run the dataflow analyzer. Each subclass overrides this method to define it's semantics for dataflow analysis. It alters the input flow value to reflect the effect of the node within the given flow problem, calling dataflow() on it's subtrees as necessary. See the dataflow analysis documentation for more information.
Implements Node. |
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Call base_type() with the argument true.
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Call base_type() with the argument false.
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Definition at line 622 of file ast.h. References _defs. |
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Definition at line 621 of file ast.h. References _defs. |
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Enter a new pragma depth.
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Enter a new scope.
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Definition at line 633 of file ast.h. References _errors. |
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Exit s pragma depth.
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Exit scope.
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Run fixup passes. Run the various fix-up passes, just as we would after parsing. |
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Set the "gen" flow value. This value is used in dataflow analyses to store information that is generated at this node. Note that each node has exactly one "gen" flow value. In order to set the flow value to be empty, call this method with a value of NULL.
Definition at line 297 of file ast.h. References Node::_gen. |
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Get the "gen" flow value. This value is used in dataflow analyses to store information that is generated at this node. Note that each node has exactly one "gen" flow value.
Definition at line 284 of file ast.h. References Node::_gen. |
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Definition at line 634 of file ast.h. References _errors. |
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Definition at line 637 of file ast.h. References _warnings. |
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Definition at line 629 of file ast.h. References _input_file. |
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Set the "kill" flow value. This value is used in dataflow analyses to store information that is killed at this node. Note that each node has exactly one "kill" flow value. To set the flow value to be empty, call this method with a value of NULL.
Definition at line 320 of file ast.h. References Node::_kill. |
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Get the "kill" flow value. This value is used in dataflow analyses to store information that is killed at this node. Note that each node has exactly one "kill" flow value.
Definition at line 307 of file ast.h. References Node::_kill. |
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Merge in external definitions.
Definition at line 658 of file ast.h. References _defs. |
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Definition at line 631 of file ast.h. References _obj_file. |
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Generate C code. Each subclass overrides this method to define how to produce the output C code. To use this method, pass an output_context and a null parent.
Implements Node. |
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Definition at line 630 of file ast.h. References _output_file. |
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Set the parenthesized boolean. This boolean determines whether this expression will be parenthesized in the output. Note that that the parentheses will always be added when they are needed to disambiguate the output. This variable only controls the use of "un-necessary" parentheses.
Definition at line 262 of file ast.h. References Node::_parenthesized. |
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Get the parenthesized boolean.
Definition at line 250 of file ast.h. References Node::_parenthesized. |
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Parse the input file. Run the parser on the input file using the given preprocessor flags. The resulting AST is stored in the various unitNode fields ( _defs, _types, etc.).
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Definition at line 625 of file ast.h. References _pragma_level. |
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Definition at line 643 of file ast.h. References _pragmas. |
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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. |
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Definition at line 641 of file ast.h. References _suespecs. |
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Definition at line 624 of file ast.h. References _symbol_level. |
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Definition at line 627 of file ast.h. References _tags. |
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Get the node type. This has nothing to do with types in the source code. It indicates what kind of AST node this is (e.g., a unary expression node or a while node).
Definition at line 216 of file ast.h. References Node::_typ. Referenced by gcWalker::delete_nodes(), and NodeInfo::nodeIndex(). |
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Return the node data type. This method returns the C data type of a node. Several different kinds of nodes contain typeNode pointers. This method is just a unified way to access them. It does not attempt to compute the type, it just returns whatever typeNode pointer resides on the node. The subclasses that have types return them, and the others return null.
Reimplemented in declNode, typeNode, exprNode, and operandNode. |
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Definition at line 626 of file ast.h. References _types. |
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Definition at line 639 of file ast.h. References _undef_funcs. |
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Dispatch a Visitor. This abstract method is the entry point for the visitor design pattern. Each node subclass defines a visit() method that calls the appropriate at_ method in the visitor. For more information see the Visitor documentation.
Implements Node. |
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Dispatch a Walker. This abstract method works much like the visitor, but instead walks the entire underlying subtree calling the appropriate at_ method at each node. For more information see the Walker documentation.
Implements Node. |
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Definition at line 636 of file ast.h. References _warnings. |
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The external definitions. The list of external definitions (top level) parsed in from the source. This is the top of the AST. Definition at line 477 of file ast.h. Referenced by defs(), and merge_in(). |
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The number of errors. The number of errors encountered during parsing. Definition at line 533 of file ast.h. Referenced by errors(), and inc_errors(). |
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Source file name. The name of the source file from which this AST was parsed. Definition at line 514 of file ast.h. Referenced by input_file(). |
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The object output file name. The name of the object file generated when using -gccobj Definition at line 527 of file ast.h. Referenced by obj_file(). |
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The output file name. The name of the output file to which the resulting code is written (only if the -c-code flag is given). Definition at line 521 of file ast.h. Referenced by output_file(). |
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Depth for pragmas.
Definition at line 492 of file ast.h. Referenced by pragma_level(). |
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Pragmas. This list will contain any pragmas that belong at the end of the given unitNode. During parsing, they are collected into the CBZ::pragmas list and then placed here in the unitNode::parse. Definition at line 574 of file ast.h. Referenced by pragmas(). |
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struct/enum/union contents During parsing, we maintain a separate, global list of the contents of struct/enum/union definitions. The reason is that this avoids the problem of which declaration "owns" the content definition. Instead, all uses of the s/u/e type simply refer to one of the elements of this list. Definition at line 559 of file ast.h. Referenced by suespecs(). |
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Depth of the scope.
Definition at line 484 of file ast.h. Referenced by symbol_level(). |
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Table of struct/union tags.
Definition at line 508 of file ast.h. Referenced by tags(). |
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Table of type names.
Definition at line 500 of file ast.h. Referenced by types(). |
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Undeclared functions. This list will contain a function declaration for any functions not explicitly declared in the source. Definition at line 546 of file ast.h. Referenced by undef_funcs(). |
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The number of warnings. The number of warnings encountered during parsing. Definition at line 539 of file ast.h. Referenced by inc_warnings(), and warnings(). |
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Definition at line 165 of file ast.h. Referenced by gcWalker::delete_nodes(). |
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Definition at line 168 of file ast.h. Referenced by gcWalker::at_binary(), and gcWalker::delete_nodes(). |
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Definition at line 162 of file ast.h. Referenced by gcWalker::delete_nodes(), and gcWalker::gcWalker(). |
Generated on February 1, 2006
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