DuroDBMS API  1.2
Functions
Interpreter functions

Functions

int Duro_init_interp (Duro_interp *interp, RDB_exec_context *ecp, RDB_environment *envp, const char *dbname)
 
void Duro_destroy_interp (Duro_interp *interp)
 
RDB_environment * Duro_dt_env (Duro_interp *interp)
 
RDB_transaction * Duro_dt_tx (Duro_interp *interp)
 
void Duro_println_error (const RDB_object *errobjp)
 
void Duro_print_error_f (const RDB_object *errobjp, FILE *f)
 
void Duro_dt_interrupt (Duro_interp *interp)
 
int Duro_dt_execute_path (const char *path, Duro_interp *interp, RDB_exec_context *ecp)
 
int Duro_dt_execute (FILE *infp, Duro_interp *interp, RDB_exec_context *ecp)
 
int Duro_dt_execute_str (const char *instr, Duro_interp *interp, RDB_exec_context *ecp)
 
RDB_expression * Duro_dt_parse_expr_str (const char *instr, Duro_interp *interp, RDB_exec_context *ecp)
 
const char * Duro_dt_prompt (Duro_interp *interp)
 
RDB_object * Duro_lookup_var (const char *name, Duro_interp *interp, RDB_exec_context *ecp)
 
RDB_object * Duro_lookup_sym (const char *name, Duro_interp *interp, int *flagsp, RDB_exec_context *ecp)
 
int Duro_dt_put_creop_info (Duro_interp *interp, const char *lang, Duro_uop_info *infop, RDB_exec_context *ecp)
 
Duro_uop_info * Duro_dt_get_creop_info (const Duro_interp *interp, const char *lang)
 

Detailed Description

#include <dli/iinterp.h>

Function Documentation

void Duro_destroy_interp ( Duro_interp *  interp)

Release resources allocated during interpreter initialization. If a database environment is connected it will be closed.

References RDB_close_env(), RDB_destroy_exec_context(), RDB_destroy_obj(), RDB_free(), and RDB_init_exec_context().

int Duro_dt_execute ( FILE *  infp,
Duro_interp *  interp,
RDB_exec_context *  ecp 
)

Read statements from input stream *infp and execute them. If the input is a terminal, a function for reading lines must be provided using RDB_parse_set_read_line_fn().

References Duro_println_error(), RDB_bool_to_obj(), RDB_clear_err(), RDB_ec_set_property(), RDB_free(), RDB_get_err(), and RDB_init_obj().

Referenced by Duro_dt_execute_path().

int Duro_dt_execute_path ( const char *  path,
Duro_interp *  interp,
RDB_exec_context *  ecp 
)

Read statements from file given by path and execute them. If path is NULL, read from standard input. If the input is a terminal, a function for reading lines must be provided using RDB_parse_set_read_line_fn().

References Duro_dt_execute(), and RDB_raise_resource_not_found().

int Duro_dt_execute_str ( const char *  instr,
Duro_interp *  interp,
RDB_exec_context *  ecp 
)

Read statements from string instr and execute them.

References RDB_ec_set_property(), RDB_free(), RDB_get_err(), and RDB_raise_internal().

Duro_uop_info* Duro_dt_get_creop_info ( const Duro_interp *  interp,
const char *  lang 
)

Return the information about operator creation that was previously pass to Duro_dt_put_creop_info().

void Duro_dt_interrupt ( Duro_interp *  interp)

Make the interpreter raise a system_error. This function may be called from a signal handler.

const char* Duro_dt_prompt ( Duro_interp *  interp)

Return a pointer to the interp->prompt that is used in interactive mode.

References RDB_obj_string().

int Duro_dt_put_creop_info ( Duro_interp *  interp,
const char *  lang,
Duro_uop_info *  infop,
RDB_exec_context *  ecp 
)

Specifies how to create a user-defined operator implemented in the language given by argument lang.

If the interpreter encounters a statement of the form

OPERATOR <opname> ( <parameters> ) RETURNS <type> EXTERN '<lang>' '<external_ref>'; END OPERATOR;

it will call RDB_create_ro_op() with arguments libname and symname set to infop->libname and info->ro_op_symname, respectively.

If the interpreter encounters a statement of the form

OPERATOR <opname> ( <parameters> ) UPDATES { <update parameters> } EXTERN '<lang>' '<external_ref>'; END OPERATOR;

it will call RDB_create_update_op() with arguments libname and symname set to infop->libname and info->update_op_symname, respectively.

References RDB_errno_to_error().

int Duro_init_interp ( Duro_interp *  interp,
RDB_exec_context *  ecp,
RDB_environment *  envp,
const char *  dbname 
)
RDB_object* Duro_lookup_sym ( const char *  name,
Duro_interp *  interp,
int *  flagsp,
RDB_exec_context *  ecp 
)

Looks up a variable or constant and returns a pointer to the RDB_object containing its value.

References RDB_get_table(), and RDB_raise_name().

Referenced by Duro_lookup_var().

RDB_object* Duro_lookup_var ( const char *  name,
Duro_interp *  interp,
RDB_exec_context *  ecp 
)

Looks up a variable and returns a pointer to the RDB_object containing its value.

References Duro_lookup_sym(), and RDB_raise_name().

void Duro_print_error_f ( const RDB_object *  errobjp,
FILE *  f 
)
void Duro_println_error ( const RDB_object *  errobjp)

Print an error to stderr, followed by a newline.

References Duro_print_error_f().

Referenced by Duro_dt_execute().