Decaf Compiler
include
visitor.h
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#ifndef __VISITOR_H
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#define __VISITOR_H
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#include "
ast.h
"
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/*
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* AST TRAVERSAL (VISITOR PATTERN)
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*/
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typedef
struct
NodeVisitor
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{
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void
*
data
;
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Destructor
dtor
;
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/*
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* Traversal routines; each of these is called at the appropriate time as
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* the visitor traverses the AST.
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*/
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#ifndef SKIP_IN_DOXYGEN
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void (* previsit_default) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_default) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_program) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_program) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_vardecl) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_vardecl) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_funcdecl) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_funcdecl) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_block) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_block) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_assignment) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_assignment) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_conditional) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_conditional) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_whileloop) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_whileloop) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_return) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_return) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_break) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_break) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_continue) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_continue) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_binaryop) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* invisit_binaryop) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_binaryop) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_unaryop) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_unaryop) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_location) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_location) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_funccall) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_funccall) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (* previsit_literal) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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void (*postvisit_literal) (
struct
NodeVisitor
* visitor,
ASTNode
* node);
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#endif
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}
NodeVisitor
;
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NodeVisitor
*
NodeVisitor_new
();
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void
NodeVisitor_traverse
(
NodeVisitor
* visitor,
ASTNode
* node);
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void
NodeVisitor_traverse_and_free
(
NodeVisitor
* visitor,
ASTNode
* node);
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void
NodeVisitor_free
(
NodeVisitor
* visitor);
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/*
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* VISITORS
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*/
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NodeVisitor
*
PrintVisitor_new
(FILE* output);
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NodeVisitor
*
GenerateASTGraph_new
(FILE* output);
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NodeVisitor
*
SetParentVisitor_new
();
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NodeVisitor
*
CalcDepthVisitor_new
();
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#endif
NodeVisitor_traverse
void NodeVisitor_traverse(NodeVisitor *visitor, ASTNode *node)
Perform an AST traversal using the given visitor.
Definition:
visitor.c:60
ASTNode
Main AST node structure.
Definition:
ast.h:470
SetParentVisitor_new
NodeVisitor * SetParentVisitor_new()
Create a new visitor that sets up parent pointers as attributes.
Definition:
visitor.c:550
CalcDepthVisitor_new
NodeVisitor * CalcDepthVisitor_new()
Create a new visitor that calculates node depths as attributes.
Definition:
visitor.c:584
PrintVisitor_new
NodeVisitor * PrintVisitor_new(FILE *output)
Create a new AST debug print visitor.
Definition:
visitor.c:329
ast.h
AST nodes and attributes.
NodeVisitor
Node visitor structure.
Definition:
visitor.h:27
NodeVisitor
struct NodeVisitor NodeVisitor
Node visitor structure.
NodeVisitor_free
void NodeVisitor_free(NodeVisitor *visitor)
Deallocate a visitor structure.
Definition:
visitor.c:188
NodeVisitor::data
void * data
Visitor-specific state information.
Definition:
visitor.h:32
NodeVisitor_traverse_and_free
void NodeVisitor_traverse_and_free(NodeVisitor *visitor, ASTNode *node)
Perform an AST traversal using the given visitor and then deallocate the visitor.
Definition:
visitor.c:182
GenerateASTGraph_new
NodeVisitor * GenerateASTGraph_new(FILE *output)
Create a new AST debug graph output visitor.
Definition:
visitor.c:455
NodeVisitor::dtor
Destructor dtor
Pointer to destructor function (used to deallocate the data member)
Definition:
visitor.h:37
NodeVisitor_new
NodeVisitor * NodeVisitor_new()
Allocate a new generic visitor structure.
Definition:
visitor.c:13
Destructor
void(* Destructor)(void *)
Function pointer used to store references to custom "free" routines.
Definition:
ast.h:23
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