ast(3)

NAME

expr - c-like expression library

SYNOPSIS

#include <graphviz/expr.h>
Expr_t*          exopen(Exdisc_t*);
Excc_t*          exccopen(Expr_t*, Exccdisc_t*);
int               excc(Excc_t*,  const  char*,  Exid_t*, int);
int              exccclose(Excc_t*);
void             exclose(Expr_t*, int);
char*            excontext(Expr_t*, char*, int);
void             exerror(const char*, ...);
Extype_t         exeval(Expr_t*, Exnode_t*, void*);
Exnode_t*        exexpr(Expr_t*, const  char*,  Exid_t*, int);
Exnode_t*         excast(Expr_t*,  Exnode_t*,  int,
Exnode_t*, int);
Exnode_t*        exnewnode(Expr_t*, int, int,  int,
Exnode_t*, Exnode_t*);
void             exfreenode(Expr_t*, Exnode_t*);
int               expush(Expr_t*, const char*, int,
const char*, Sfio_t*);
int              expop(Expr_t*);
int              excomp(Expr_t*, const char*,  int,
const char*, Sfio_t*);
int              exrewind(Expr_t*);
void             exstatement(Expr_t*);
int              extoken(Expr_t*);
char*            extype(int);
Extype_t         exzero(int);

DESCRIPTION

exopen() is the first function called. exclose() is the

last function called. exccopen() is the called if code genera

tion will be used. exccclose() releases the state information

allocated in exccopen(). exstatement() saves statement start in

formation. exrewind() restores statement start information saved

by exstatement().

SEE ALSO

AST(3)