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Diffstat (limited to 'libguile/print.c')
-rw-r--r--libguile/print.c302
1 files changed, 184 insertions, 118 deletions
diff --git a/libguile/print.c b/libguile/print.c
index 2fc536b02..90bc9adf8 100644
--- a/libguile/print.c
+++ b/libguile/print.c
@@ -40,7 +40,6 @@
#include "libguile/macros.h"
#include "libguile/procprop.h"
#include "libguile/read.h"
-#include "libguile/weaks.h"
#include "libguile/programs.h"
#include "libguile/alist.h"
#include "libguile/struct.h"
@@ -161,7 +160,7 @@ do \
{ \
if (pstate->top - pstate->list_offset >= pstate->level) \
{ \
- scm_putc ('#', port); \
+ scm_putc_unlocked ('#', port); \
return; \
} \
} \
@@ -305,9 +304,9 @@ print_circref (SCM port, scm_print_state *pstate, SCM ref)
for (i = pstate->top - 1; 1; --i)
if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref))
break;
- scm_putc ('#', port);
+ scm_putc_unlocked ('#', port);
scm_intprint (i - self, 10, port);
- scm_putc ('#', port);
+ scm_putc_unlocked ('#', port);
}
/* Print the name of a symbol. */
@@ -336,6 +335,7 @@ quote_keywordish_symbols (void)
(INITIAL_IDENTIFIER_MASK \
| UC_CATEGORY_MASK_Nd | UC_CATEGORY_MASK_Mc | UC_CATEGORY_MASK_Me)
+/* FIXME: Cache this information on the symbol, somehow. */
static int
symbol_has_extended_read_syntax (SCM sym)
{
@@ -348,26 +348,56 @@ symbol_has_extended_read_syntax (SCM sym)
c = scm_i_symbol_ref (sym, 0);
- /* Single dot; conflicts with dotted-pair notation. */
- if (len == 1 && c == '.')
- return 1;
-
- /* Other initial-character constraints. */
- if (c == '\'' || c == '`' || c == ',' || c == '"' || c == ';' || c == '#')
- return 1;
+ switch (c)
+ {
+ case '\'':
+ case '`':
+ case ',':
+ case '"':
+ case ';':
+ case '#':
+ /* Some initial-character constraints. */
+ return 1;
- /* Keywords can be identified by trailing colons too. */
- if (c == ':' || scm_i_symbol_ref (sym, len - 1) == ':')
- return quote_keywordish_symbols ();
+ case ':':
+ /* Symbols that look like keywords. */
+ return quote_keywordish_symbols ();
- /* Number-ish symbols. */
- if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym), 10)))
- return 1;
+ case '.':
+ /* Single dot conflicts with dotted-pair notation. */
+ if (len == 1)
+ return 1;
+ /* Fall through to check numbers. */
+ case '+':
+ case '-':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ /* Number-ish symbols. Numbers with radixes already caught be #
+ above. */
+ if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym), 10)))
+ return 1;
+ break;
+
+ default:
+ break;
+ }
/* Other disallowed first characters. */
if (!uc_is_general_category_withtable (c, INITIAL_IDENTIFIER_MASK))
return 1;
+ /* Keywords can be identified by trailing colons too. */
+ if (scm_i_symbol_ref (sym, len - 1) == ':')
+ return quote_keywordish_symbols ();
+
/* Otherwise, any character that's in the identifier category mask is
fine to pass through as-is, provided it's not one of the ASCII
delimiters like `;'. */
@@ -386,7 +416,16 @@ symbol_has_extended_read_syntax (SCM sym)
static void
print_normal_symbol (SCM sym, SCM port)
{
- scm_display (scm_symbol_to_string (sym), port);
+ size_t len;
+ scm_t_string_failed_conversion_handler strategy;
+
+ len = scm_i_symbol_length (sym);
+ strategy = SCM_PTAB_ENTRY (port)->ilseq_handler;
+
+ if (scm_i_is_narrow_symbol (sym))
+ display_string (scm_i_symbol_chars (sym), 1, len, port, strategy);
+ else
+ display_string (scm_i_symbol_wide_chars (sym), 0, len, port, strategy);
}
static void
@@ -398,7 +437,7 @@ print_extended_symbol (SCM sym, SCM port)
len = scm_i_symbol_length (sym);
strategy = PORT_CONVERSION_HANDLER (port);
- scm_lfwrite ("#{", 2, port);
+ scm_lfwrite_unlocked ("#{", 2, port);
for (pos = 0; pos < len; pos++)
{
@@ -421,12 +460,12 @@ print_extended_symbol (SCM sym, SCM port)
}
}
- scm_lfwrite ("}#", 2, port);
+ scm_lfwrite_unlocked ("}#", 2, port);
}
/* FIXME: allow R6RS hex escapes instead of #{...}#. */
-void
-scm_i_print_symbol_name (SCM sym, SCM port)
+static void
+print_symbol (SCM sym, SCM port)
{
if (symbol_has_extended_read_syntax (sym))
print_extended_symbol (sym, port);
@@ -437,8 +476,8 @@ scm_i_print_symbol_name (SCM sym, SCM port)
void
scm_print_symbol_name (const char *str, size_t len, SCM port)
{
- SCM symbol = scm_from_locale_symboln (str, len);
- scm_i_print_symbol_name (symbol, port);
+ SCM symbol = scm_from_utf8_symboln (str, len);
+ print_symbol (symbol, port);
}
/* Print generally. Handles both write and display according to PSTATE.
@@ -457,7 +496,7 @@ static void iprin1 (SCM exp, SCM port, scm_print_state *pstate);
scm_intprint (i, 8, port); \
else \
{ \
- scm_puts ("x", port); \
+ scm_puts_unlocked ("x", port); \
scm_intprint (i, 16, port); \
} \
} \
@@ -512,7 +551,7 @@ iprin1 (SCM exp, SCM port, scm_print_state *pstate)
else if (SCM_IFLAGP (exp)
&& ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *))))
{
- scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port);
+ scm_puts_unlocked (iflagnames [SCM_IFLAGNUM (exp)], port);
}
else
{
@@ -533,7 +572,7 @@ iprin1 (SCM exp, SCM port, scm_print_state *pstate)
goto print_struct;
pwps = scm_i_port_with_print_state (port, pstate->handle);
pstate->revealed = 1;
- scm_call_generic_2 (print, exp, pwps);
+ scm_call_2 (print, exp, pwps);
}
else
{
@@ -601,16 +640,16 @@ iprin1 (SCM exp, SCM port, scm_print_state *pstate)
case scm_tc7_symbol:
if (scm_i_symbol_is_interned (exp))
{
- scm_i_print_symbol_name (exp, port);
+ print_symbol (exp, port);
scm_remember_upto_here_1 (exp);
}
else
{
- scm_puts ("#<uninterned-symbol ", port);
- scm_i_print_symbol_name (exp, port);
- scm_putc (' ', port);
+ scm_puts_unlocked ("#<uninterned-symbol ", port);
+ print_symbol (exp, port);
+ scm_putc_unlocked (' ', port);
scm_uintprint (SCM_UNPACK (exp), 16, port);
- scm_putc ('>', port);
+ scm_putc_unlocked ('>', port);
}
break;
case scm_tc7_variable:
@@ -625,6 +664,12 @@ iprin1 (SCM exp, SCM port, scm_print_state *pstate)
case scm_tc7_hashtable:
scm_i_hashtable_print (exp, port, pstate);
break;
+ case scm_tc7_weak_set:
+ scm_i_weak_set_print (exp, port, pstate);
+ break;
+ case scm_tc7_weak_table:
+ scm_i_weak_table_print (exp, port, pstate);
+ break;
case scm_tc7_fluid:
scm_i_fluid_print (exp, port, pstate);
break;
@@ -643,12 +688,6 @@ iprin1 (SCM exp, SCM port, scm_print_state *pstate)
case scm_tc7_vm_cont:
scm_i_vm_cont_print (exp, port, pstate);
break;
- case scm_tc7_prompt:
- scm_i_prompt_print (exp, port, pstate);
- break;
- case scm_tc7_with_fluids:
- scm_i_with_fluids_print (exp, port, pstate);
- break;
case scm_tc7_array:
ENTER_NESTED_DATA (pstate, exp, circref);
scm_i_print_array (exp, port, pstate);
@@ -662,14 +701,11 @@ iprin1 (SCM exp, SCM port, scm_print_state *pstate)
break;
case scm_tc7_wvect:
ENTER_NESTED_DATA (pstate, exp, circref);
- if (SCM_IS_WHVEC (exp))
- scm_puts ("#wh(", port);
- else
- scm_puts ("#w(", port);
+ scm_puts_unlocked ("#w(", port);
goto common_vector_printer;
case scm_tc7_vector:
ENTER_NESTED_DATA (pstate, exp, circref);
- scm_puts ("#(", port);
+ scm_puts_unlocked ("#(", port);
common_vector_printer:
{
register long i;
@@ -681,43 +717,26 @@ iprin1 (SCM exp, SCM port, scm_print_state *pstate)
last = pstate->length - 1;
cutp = 1;
}
- if (SCM_I_WVECTP (exp))
- {
- /* Elements of weak vectors may not be accessed via the
- `SIMPLE_VECTOR_REF ()' macro. */
- for (i = 0; i < last; ++i)
- {
- scm_iprin1 (scm_c_vector_ref (exp, i),
- port, pstate);
- scm_putc (' ', port);
- }
- }
- else
- {
- for (i = 0; i < last; ++i)
- {
- scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate);
- scm_putc (' ', port);
- }
- }
-
+ for (i = 0; i < last; ++i)
+ {
+ scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate);
+ scm_putc_unlocked (' ', port);
+ }
if (i == last)
{
/* CHECK_INTS; */
scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate);
}
if (cutp)
- scm_puts (" ...", port);
- scm_putc (')', port);
+ scm_puts_unlocked (" ...", port);
+ scm_putc_unlocked (')', port);
}
EXIT_NESTED_DATA (pstate);
break;
case scm_tc7_port:
{
- register long i = SCM_PTOBNUM (exp);
- if (i < scm_numptob
- && scm_ptobs[i].print
- && (scm_ptobs[i].print) (exp, port, pstate))
+ scm_t_ptob_descriptor *ptob = SCM_PORT_DESCRIPTOR (exp);
+ if (ptob->print && ptob->print (exp, port, pstate))
break;
goto punk;
}
@@ -862,7 +881,7 @@ display_string_as_utf8 (const void *str, int narrow_p, size_t len,
/* INPUT was successfully converted, entirely; print the
result. */
- scm_lfwrite (utf8_buf, utf8_len, port);
+ scm_lfwrite_unlocked (utf8_buf, utf8_len, port);
printed += i - printed;
}
@@ -871,6 +890,54 @@ display_string_as_utf8 (const void *str, int narrow_p, size_t len,
return len;
}
+/* Write STR to PORT as ISO-8859-1. STR is a LEN-codepoint string; it
+ is narrow if NARROW_P is true, wide otherwise. Return LEN. */
+static size_t
+display_string_as_latin1 (const void *str, int narrow_p, size_t len,
+ SCM port,
+ scm_t_string_failed_conversion_handler strategy)
+{
+ size_t printed = 0;
+
+ if (narrow_p)
+ {
+ scm_lfwrite_unlocked (str, len, port);
+ return len;
+ }
+
+ while (printed < len)
+ {
+ char buf[256];
+ size_t i;
+
+ for (i = 0; i < sizeof(buf) && printed < len; i++, printed++)
+ {
+ scm_t_wchar c = STR_REF (str, printed);
+
+ if (c < 256)
+ buf[i] = c;
+ else
+ break;
+ }
+
+ scm_lfwrite_unlocked (buf, i, port);
+
+ if (i < sizeof(buf) && printed < len)
+ {
+ if (strategy == SCM_FAILED_CONVERSION_ERROR)
+ break;
+ else if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE)
+ write_character_escaped (STR_REF (str, printed), 1, port);
+ else
+ /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */
+ display_string ("?", 1, 1, port, strategy);
+ printed++;
+ }
+ }
+
+ return printed;
+}
+
/* Convert STR through PORT's output conversion descriptor and write the
output to PORT. Return the number of codepoints written. */
static size_t
@@ -879,9 +946,9 @@ display_string_using_iconv (const void *str, int narrow_p, size_t len,
scm_t_string_failed_conversion_handler strategy)
{
size_t printed;
- scm_t_port *pt;
+ scm_t_iconv_descriptors *id;
- pt = SCM_PTAB_ENTRY (port);
+ id = scm_i_port_iconv_descriptors (port);
printed = 0;
@@ -910,7 +977,7 @@ display_string_using_iconv (const void *str, int narrow_p, size_t len,
output = encoded_output;
output_left = sizeof (encoded_output);
- done = iconv (pt->output_cd, &input, &input_left,
+ done = iconv (id->output_cd, &input, &input_left,
&output, &output_left);
output_len = sizeof (encoded_output) - output_left;
@@ -920,10 +987,10 @@ display_string_using_iconv (const void *str, int narrow_p, size_t len,
int errno_save = errno;
/* Reset the `iconv' state. */
- iconv (pt->output_cd, NULL, NULL, NULL, NULL);
+ iconv (id->output_cd, NULL, NULL, NULL, NULL);
/* Print the OUTPUT_LEN bytes successfully converted. */
- scm_lfwrite (encoded_output, output_len, port);
+ scm_lfwrite_unlocked (encoded_output, output_len, port);
/* See how many input codepoints these OUTPUT_LEN bytes
corresponds to. */
@@ -958,7 +1025,7 @@ display_string_using_iconv (const void *str, int narrow_p, size_t len,
{
/* INPUT was successfully converted, entirely; print the
result. */
- scm_lfwrite (encoded_output, output_len, port);
+ scm_lfwrite_unlocked (encoded_output, output_len, port);
codepoints_read = i - printed;
printed += codepoints_read;
}
@@ -978,22 +1045,17 @@ static size_t
display_string (const void *str, int narrow_p,
size_t len, SCM port,
scm_t_string_failed_conversion_handler strategy)
-
{
scm_t_port *pt;
pt = SCM_PTAB_ENTRY (port);
- if (pt->output_cd == (iconv_t) -1)
- /* Initialize the conversion descriptors, if needed. */
- scm_i_set_port_encoding_x (port, pt->encoding);
-
- /* FIXME: In 2.1, add a flag to determine whether a port is UTF-8. */
- if (pt->output_cd == (iconv_t) -1)
+ if (pt->encoding_mode == SCM_PORT_ENCODING_MODE_UTF8)
return display_string_as_utf8 (str, narrow_p, len, port);
+ else if (pt->encoding_mode == SCM_PORT_ENCODING_MODE_LATIN1)
+ return display_string_as_latin1 (str, narrow_p, len, port, strategy);
else
- return display_string_using_iconv (str, narrow_p, len,
- port, strategy);
+ return display_string_using_iconv (str, narrow_p, len, port, strategy);
}
/* Attempt to display CH to PORT according to STRATEGY. Return non-zero
@@ -1038,7 +1100,7 @@ write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port)
/* Use special escapes for some C0 controls. */
buf[0] = '\\';
buf[1] = escapes[ch - 0x07];
- scm_lfwrite (buf, 2, port);
+ scm_lfwrite_unlocked (buf, 2, port);
}
else if (!SCM_R6RS_ESCAPES_P)
{
@@ -1048,7 +1110,7 @@ write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port)
buf[1] = 'x';
buf[2] = hex[ch / 16];
buf[3] = hex[ch % 16];
- scm_lfwrite (buf, 4, port);
+ scm_lfwrite_unlocked (buf, 4, port);
}
else if (ch <= 0xFFFF)
{
@@ -1058,7 +1120,7 @@ write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port)
buf[3] = hex[(ch & 0xF00) >> 8];
buf[4] = hex[(ch & 0xF0) >> 4];
buf[5] = hex[(ch & 0xF)];
- scm_lfwrite (buf, 6, port);
+ scm_lfwrite_unlocked (buf, 6, port);
}
else if (ch > 0xFFFF)
{
@@ -1070,7 +1132,7 @@ write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port)
buf[5] = hex[(ch & 0xF00) >> 8];
buf[6] = hex[(ch & 0xF0) >> 4];
buf[7] = hex[(ch & 0xF)];
- scm_lfwrite (buf, 8, port);
+ scm_lfwrite_unlocked (buf, 8, port);
}
}
else
@@ -1093,7 +1155,7 @@ write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port)
buf[i] = 'x';
i --;
buf[i] = '\\';
- scm_lfwrite (buf + i, 9 - i, port);
+ scm_lfwrite_unlocked (buf + i, 9 - i, port);
}
}
else
@@ -1103,7 +1165,7 @@ write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port)
name = scm_i_charname (SCM_MAKE_CHAR (ch));
if (name != NULL)
- scm_puts (name, port);
+ scm_puts_unlocked (name, port);
else
PRINT_CHAR_ESCAPE (ch, port);
}
@@ -1174,14 +1236,14 @@ void
scm_intprint (scm_t_intmax n, int radix, SCM port)
{
char num_buf[SCM_INTBUFLEN];
- scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port);
+ scm_lfwrite_unlocked (num_buf, scm_iint2str (n, radix, num_buf), port);
}
void
scm_uintprint (scm_t_uintmax n, int radix, SCM port)
{
char num_buf[SCM_INTBUFLEN];
- scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port);
+ scm_lfwrite_unlocked (num_buf, scm_iuint2str (n, radix, num_buf), port);
}
/* Print an object of unrecognized type.
@@ -1190,19 +1252,19 @@ scm_uintprint (scm_t_uintmax n, int radix, SCM port)
void
scm_ipruk (char *hdr, SCM ptr, SCM port)
{
- scm_puts ("#<unknown-", port);
- scm_puts (hdr, port);
+ scm_puts_unlocked ("#<unknown-", port);
+ scm_puts_unlocked (hdr, port);
if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */
{
- scm_puts (" (0x", port);
+ scm_puts_unlocked (" (0x", port);
scm_uintprint (SCM_CELL_WORD_0 (ptr), 16, port);
- scm_puts (" . 0x", port);
+ scm_puts_unlocked (" . 0x", port);
scm_uintprint (SCM_CELL_WORD_1 (ptr), 16, port);
- scm_puts (") @", port);
+ scm_puts_unlocked (") @", port);
}
- scm_puts (" 0x", port);
+ scm_puts_unlocked (" 0x", port);
scm_uintprint (SCM_UNPACK (ptr), 16, port);
- scm_putc ('>', port);
+ scm_putc_unlocked ('>', port);
}
@@ -1213,7 +1275,7 @@ scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate)
{
register SCM hare, tortoise;
long floor = pstate->top - 2;
- scm_puts (hdr, port);
+ scm_puts_unlocked (hdr, port);
/* CHECK_INTS; */
if (pstate->fancyp)
goto fancy_printing;
@@ -1243,18 +1305,18 @@ scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate)
if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp))
goto circref;
PUSH_REF (pstate, exp);
- scm_putc (' ', port);
+ scm_putc_unlocked (' ', port);
/* CHECK_INTS; */
scm_iprin1 (SCM_CAR (exp), port, pstate);
}
if (!SCM_NULL_OR_NIL_P (exp))
{
- scm_puts (" . ", port);
+ scm_puts_unlocked (" . ", port);
scm_iprin1 (exp, port, pstate);
}
end:
- scm_putc (tlr, port);
+ scm_putc_unlocked (tlr, port);
pstate->top = floor + 2;
return;
@@ -1275,7 +1337,7 @@ fancy_printing:
{
if (n == 0)
{
- scm_puts (" ...", port);
+ scm_puts_unlocked (" ...", port);
goto skip_tail;
}
else
@@ -1283,14 +1345,14 @@ fancy_printing:
}
PUSH_REF(pstate, exp);
++pstate->list_offset;
- scm_putc (' ', port);
+ scm_putc_unlocked (' ', port);
/* CHECK_INTS; */
scm_iprin1 (SCM_CAR (exp), port, pstate);
}
}
if (!SCM_NULL_OR_NIL_P (exp))
{
- scm_puts (" . ", port);
+ scm_puts_unlocked (" . ", port);
scm_iprin1 (exp, port, pstate);
}
skip_tail:
@@ -1301,7 +1363,7 @@ fancy_circref:
pstate->list_offset -= pstate->top - floor - 2;
circref:
- scm_puts (" . ", port);
+ scm_puts_unlocked (" . ", port);
print_circref (port, pstate, exp);
goto end;
}
@@ -1326,7 +1388,11 @@ scm_write (SCM obj, SCM port)
SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write);
+ scm_dynwind_begin (0);
+ scm_dynwind_lock_port (SCM_COERCE_OUTPORT (port));
scm_prin1 (obj, port, 1);
+ scm_dynwind_end ();
+
return SCM_UNSPECIFIED;
}
@@ -1341,7 +1407,11 @@ scm_display (SCM obj, SCM port)
SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display);
+ scm_dynwind_begin (0);
+ scm_dynwind_lock_port (SCM_COERCE_OUTPORT (port));
scm_prin1 (obj, port, 0);
+ scm_dynwind_end ();
+
return SCM_UNSPECIFIED;
}
@@ -1454,7 +1524,7 @@ SCM_DEFINE (scm_newline, "newline", 0, 1, 0,
SCM_VALIDATE_OPORT_VALUE (1, port);
- scm_putc ('\n', SCM_COERCE_OUTPORT (port));
+ scm_putc_unlocked ('\n', SCM_COERCE_OUTPORT (port));
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
@@ -1499,7 +1569,7 @@ static int
port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate)
{
obj = SCM_PORT_WITH_PS_PORT (obj);
- return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate);
+ return SCM_PORT_DESCRIPTOR (obj)->print (obj, port, pstate);
}
SCM
@@ -1544,14 +1614,10 @@ SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0,
void
scm_init_print ()
{
- SCM vtable, layout, type;
-
- scm_gc_register_root (&print_state_pool);
- scm_gc_register_root (&scm_print_state_vtable);
- vtable = scm_make_vtable_vtable (scm_nullstr, SCM_INUM0, SCM_EOL);
- layout =
- scm_make_struct_layout (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT));
- type = scm_make_struct (vtable, SCM_INUM0, scm_list_1 (layout));
+ SCM type;
+
+ type = scm_make_vtable (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT),
+ SCM_BOOL_F);
scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state"));
scm_print_state_vtable = type;