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Use heap-allocated port types instead of ptobnums

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This removes a limitation on the number of port types, simplifies the
API, and removes a central point of coordination.

* libguile/ports-internal.h (struct scm_t_port_type): Rename from
  scm_t_ptob_descriptor, now that it's private.  Add GOOPS class
  fields.
  (struct scm_t_port): Rename from struct scm_port, especially
  considering that deprecated.h redefines scm_port using the
  preprocessor :(.
* libguile/ports.h: Add definitions of SCM_PORT and SCM_PORT_TYPE,
  though the scm_t_port and scm_t_port_type types are incomplete.
  (SCM_TC2PTOBNUM, SCM_PTOBNUM, SCM_PTOBNAME): Remove, as there are no
  more typecodes for port types.
  (scm_c_num_port_types, scm_c_port_type_ref, scm_c_port_type_add_x):
  Remove.
  (scm_make_port_type): Return a scm_t_port_type*.  All methods adapted
  to take a scm_t_port_type* instead of a ptobnum.
  (scm_c_make_port_with_encoding, scm_c_make_port): Take a port type
  pointer instead of a tag.
  (scm_new_port_table_entry): Remove; not useful.
* libguile/ports.c: Remove things related to the port kind table.  Adapt
  uses of SCM_PORT_DESCRIPTOR / scm_t_ptob_descriptor to use
  SCM_PORT_TYPE and scm_t_port_type.
* libguile/deprecated.c:
* libguile/deprecated.h:
* libguile/filesys.c:
* libguile/fports.c:
* libguile/fports.h:
* libguile/print.c:
* libguile/r6rs-ports.c:
* libguile/strports.c:
* libguile/strports.h:
* libguile/tags.h:
* libguile/vports.c:
* test-suite/standalone/test-scm-c-read.c: Adapt to change.
* libguile/goops.c (scm_class_of, make_port_classes)
  (scm_make_port_classes, create_port_classes): Adapt to store the
  classes in the ptob.
This commit is contained in:
Andy Wingo 2016-05-13 18:23:47 +02:00
parent 17f90360b6
commit cd51ce81d0
17 changed files with 190 additions and 272 deletions
Download patch file Download diff file Expand all files Collapse all files

18
libguile/strports.c
View file

@ -54,7 +54,7 @@
SCM_SYMBOL (sym_UTF_8, "UTF-8");
scm_t_bits scm_tc16_strport;
scm_t_port_type *scm_string_port_type;
struct string_port {
SCM bytevector;
@ -181,7 +181,7 @@ scm_mkstrport (SCM pos, SCM str, long modes, const char *caller)
stream->len = len;
return
scm_c_make_port_with_encoding (scm_tc16_strport, modes, sym_UTF_8,
scm_c_make_port_with_encoding (scm_string_port_type, modes, sym_UTF_8,
scm_i_default_port_conversion_strategy (),
(scm_t_bits) stream);
}
@ -375,21 +375,21 @@ scm_eval_string (SCM string)
return scm_eval_string_in_module (string, SCM_UNDEFINED);
}
static scm_t_bits
static scm_t_port_type *
scm_make_string_port_type ()
{
scm_t_bits tc = scm_make_port_type ("string",
string_port_read,
string_port_write);
scm_set_port_seek (tc, string_port_seek);
scm_t_port_type *ptob = scm_make_port_type ("string",
string_port_read,
string_port_write);
scm_set_port_seek (ptob, string_port_seek);
return tc;
return ptob;
}
void
scm_init_strports ()
{
scm_tc16_strport = scm_make_string_port_type ();
scm_string_port_type = scm_make_string_port_type ();
#include "libguile/strports.x"
}