02110-1301, USA. */
#include <config.h>
-#include <libpspp/message.h>
+
+#include <language/data-io/inpt-pgm.h>
+
#include <float.h>
#include <stdlib.h>
-#include <libpspp/alloc.h>
+
+#include <data/case-source.h>
#include <data/case.h>
+#include <data/case-source.h>
+#include <data/dictionary.h>
+#include <data/procedure.h>
+#include <data/transformations.h>
+#include <data/variable.h>
#include <language/command.h>
-#include <libpspp/compiler.h>
-#include <language/data-io/data-list.h>
#include <language/data-io/data-reader.h>
-#include <data/dictionary.h>
-#include <libpspp/message.h>
-#include <language/expressions/public.h>
#include <language/data-io/file-handle.h>
+#include <language/expressions/public.h>
#include <language/lexer/lexer.h>
+#include <libpspp/alloc.h>
+#include <libpspp/assertion.h>
+#include <libpspp/compiler.h>
+#include <libpspp/message.h>
+#include <libpspp/message.h>
#include <libpspp/misc.h>
#include <libpspp/str.h>
-#include <data/variable.h>
-#include <procedure.h>
#include "gettext.h"
#define _(msgid) gettext (msgid)
-#include <libpspp/debug-print.h>
+/* Private result codes for use within INPUT PROGRAM. */
+enum cmd_result_extensions
+ {
+ CMD_END_INPUT_PROGRAM = CMD_PRIVATE_FIRST,
+ CMD_END_CASE
+ };
/* Indicates how a `union value' should be initialized. */
enum value_init_type
struct input_program_pgm
{
+ struct trns_chain *trns_chain;
+
+ size_t case_nr; /* Incremented by END CASE transformation. */
+ write_case_func *write_case;/* Called by END CASE. */
+ write_case_data wc_data; /* Aux data used by END CASE. */
+
enum value_init_type *init; /* How to initialize each `union value'. */
size_t init_cnt; /* Number of elements in inp_init. */
size_t case_size; /* Size of case in bytes. */
};
-static trns_proc_func end_case_trns_proc, reread_trns_proc, end_file_trns_proc;
+static void destroy_input_program (struct input_program_pgm *);
+static trns_proc_func end_case_trns_proc;
+static trns_proc_func reread_trns_proc;
+static trns_proc_func end_file_trns_proc;
static trns_free_func reread_trns_free;
-int
-cmd_input_program (void)
-{
- discard_variables ();
+static const struct case_source_class input_program_source_class;
+
+static bool inside_input_program;
- /* FIXME: we shouldn't do this here, but I'm afraid that other
- code will check the class of vfm_source. */
- vfm_source = create_case_source (&input_program_source_class, NULL);
+/* Returns true if we're parsing the inside of a INPUT
+ PROGRAM...END INPUT PROGRAM construct, false otherwise. */
+bool
+in_input_program (void)
+{
+ return inside_input_program;
+}
- return lex_end_of_command ();
+/* Emits an END CASE transformation for INP. */
+static void
+emit_END_CASE (struct dataset *ds, struct input_program_pgm *inp)
+{
+ add_transformation (ds, end_case_trns_proc, NULL, inp);
}
int
-cmd_end_input_program (void)
+cmd_input_program (struct lexer *lexer, struct dataset *ds)
{
struct input_program_pgm *inp;
size_t i;
+ bool saw_END_CASE = false;
+
+ discard_variables (ds);
+ if (lex_token (lexer) != '.')
+ return lex_end_of_command (lexer);
+
+ inp = xmalloc (sizeof *inp);
+ inp->trns_chain = NULL;
+ inp->init = NULL;
+
+ inside_input_program = true;
+ for (;;)
+ {
+ enum cmd_result result = cmd_parse (lexer, ds, CMD_STATE_INPUT_PROGRAM);
+ if (result == CMD_END_INPUT_PROGRAM)
+ break;
+ else if (result == CMD_END_CASE)
+ {
+ emit_END_CASE (ds, inp);
+ saw_END_CASE = true;
+ }
+ else if (cmd_result_is_failure (result) && result != CMD_FAILURE)
+ {
+ if (result == CMD_EOF)
+ msg (SE, _("Unexpected end-of-file within INPUT PROGRAM."));
+ inside_input_program = false;
+ discard_variables (ds);
+ destroy_input_program (inp);
+ return result;
+ }
+ }
+ if (!saw_END_CASE)
+ emit_END_CASE (ds, inp);
+ inside_input_program = false;
- if (!case_source_is_class (vfm_source, &input_program_source_class))
+ if (dict_get_next_value_idx (dataset_dict (ds)) == 0)
{
- msg (SE, _("No matching INPUT PROGRAM command."));
- return CMD_CASCADING_FAILURE;
+ msg (SE, _("Input program did not create any variables."));
+ discard_variables (ds);
+ destroy_input_program (inp);
+ return CMD_FAILURE;
}
- if (dict_get_next_value_idx (default_dict) == 0)
- msg (SW, _("No data-input or transformation commands specified "
- "between INPUT PROGRAM and END INPUT PROGRAM."));
-
- /* Mark the boundary between INPUT PROGRAM transformations and
- ordinary transformations. */
- f_trns = n_trns;
+ inp->trns_chain = proc_capture_transformations (ds);
+ trns_chain_finalize (inp->trns_chain);
/* Figure out how to initialize each input case. */
- inp = xmalloc (sizeof *inp);
- inp->init_cnt = dict_get_next_value_idx (default_dict);
+ inp->init_cnt = dict_get_next_value_idx (dataset_dict (ds));
inp->init = xnmalloc (inp->init_cnt, sizeof *inp->init);
for (i = 0; i < inp->init_cnt; i++)
inp->init[i] = -1;
- for (i = 0; i < dict_get_var_cnt (default_dict); i++)
+ for (i = 0; i < dict_get_var_cnt (dataset_dict (ds)); i++)
{
- struct variable *var = dict_get_var (default_dict, i);
+ struct variable *var = dict_get_var (dataset_dict (ds), i);
+ size_t value_cnt = var_get_value_cnt (var);
enum value_init_type value_init;
size_t j;
- value_init = var->type == NUMERIC ? INP_NUMERIC : INP_STRING;
- value_init |= var->reinit ? INP_REINIT : INP_INIT_ONCE;
+ value_init = var_is_numeric (var) ? INP_NUMERIC : INP_STRING;
+ value_init |= var_get_leave (var) ? INP_INIT_ONCE : INP_REINIT;
- for (j = 0; j < var->nv; j++)
+ for (j = 0; j < value_cnt; j++)
inp->init[j + var->fv] = value_init;
}
for (i = 0; i < inp->init_cnt; i++)
assert (inp->init[i] != -1);
- inp->case_size = dict_get_case_size (default_dict);
+ inp->case_size = dict_get_case_size (dataset_dict (ds));
- /* Put inp into vfm_source for later use. */
- vfm_source->aux = inp;
+ proc_set_source (ds,
+ create_case_source (&input_program_source_class, inp));
- return lex_end_of_command ();
+ return CMD_SUCCESS;
+}
+
+int
+cmd_end_input_program (struct lexer *lexer UNUSED, struct dataset *ds UNUSED)
+{
+ assert (in_input_program ());
+ return CMD_END_INPUT_PROGRAM;
}
/* Initializes case C. Called before the first case is read. */
memset (case_data_rw (c, i)->s, ' ', sizeof case_data_rw (c, i)->s);
break;
default:
- assert (0);
+ NOT_REACHED ();
}
}
memset (case_data_rw (c, i)->s, ' ', sizeof case_data_rw (c, i)->s);
break;
default:
- assert (0);
+ NOT_REACHED ();
}
}
write_case_data wc_data)
{
struct input_program_pgm *inp = source->aux;
- size_t i;
-
- /* Nonzero if there were any END CASE commands in the set of
- transformations. If so, we don't automatically write out
- cases. */
- int end_case = 0;
-
- /* FIXME? This is the number of cases sent out of the input
- program, not the number of cases written to the procedure.
- The difference should only show up in $CASENUM in COMPUTE.
- We should check behavior against SPSS. */
- int cases_written = 0;
-
- assert (inp != NULL);
-
- /* Figure end_case. */
- for (i = 0; i < f_trns; i++)
- if (t_trns[i].proc == end_case_trns_proc)
- end_case = 1;
- /* FIXME: This is an ugly kluge. */
- for (i = 0; i < f_trns; i++)
- if (t_trns[i].proc == repeating_data_trns_proc)
- repeating_data_set_write_case (t_trns[i].private, write_case, wc_data);
-
- init_case (inp, c);
- for (;;)
+ inp->case_nr = 1;
+ inp->write_case = write_case;
+ inp->wc_data = wc_data;
+ for (init_case (inp, c); ; clear_case (inp, c))
{
- /* Perform transformations on `blank' case. */
- for (i = 0; i < f_trns; )
- {
- int code;
-
- if (t_trns[i].proc == end_case_trns_proc)
- {
- cases_written++;
- if (!write_case (wc_data))
- return false;
- clear_case (inp, c);
- i++;
- continue;
- }
-
- code = t_trns[i].proc (t_trns[i].private, c, cases_written + 1);
- switch (code)
- {
- case TRNS_CONTINUE:
- i++;
- break;
-
- case TRNS_DROP_CASE:
- abort ();
-
- case TRNS_ERROR:
- return false;
-
- case TRNS_NEXT_CASE:
- goto next_case;
-
- case TRNS_END_FILE:
- return true;
-
- default:
- i = code;
- break;
- }
- }
-
- /* Write the case if appropriate. */
- if (!end_case)
- {
- cases_written++;
- if (!write_case (wc_data))
- return false;
- }
+ enum trns_result result = trns_chain_execute (inp->trns_chain, c,
+ &inp->case_nr);
+ if (result == TRNS_ERROR)
+ return false;
+ else if (result == TRNS_END_FILE)
+ return true;
+ }
+}
- /* Blank out the case for the next iteration. */
- next_case:
- clear_case (inp, c);
+static void
+destroy_input_program (struct input_program_pgm *pgm)
+{
+ if (pgm != NULL)
+ {
+ trns_chain_destroy (pgm->trns_chain);
+ free (pgm->init);
+ free (pgm);
}
}
{
struct input_program_pgm *inp = source->aux;
- cancel_transformations ();
-
- if (inp != NULL)
- {
- free (inp->init);
- free (inp);
- }
+ destroy_input_program (inp);
}
-const struct case_source_class input_program_source_class =
+static const struct case_source_class input_program_source_class =
{
"INPUT PROGRAM",
NULL,
};
\f
int
-cmd_end_case (void)
+cmd_end_case (struct lexer *lexer, struct dataset *ds UNUSED)
{
- if (!case_source_is_class (vfm_source, &input_program_source_class))
- {
- msg (SE, _("This command may only be executed between INPUT PROGRAM "
- "and END INPUT PROGRAM."));
- return CMD_CASCADING_FAILURE;
- }
-
- add_transformation (end_case_trns_proc, NULL, NULL);
-
- return lex_end_of_command ();
+ assert (in_input_program ());
+ if (lex_token (lexer) == '.')
+ return CMD_END_CASE;
+ return lex_end_of_command (lexer);
}
-/* Should never be called, because this is handled in
- input_program_source_read(). */
+/* Sends the current case as the source's output. */
int
-end_case_trns_proc (void *trns_ UNUSED, struct ccase *c UNUSED,
- int case_num UNUSED)
+end_case_trns_proc (void *inp_, struct ccase *c, casenumber case_nr UNUSED)
{
- abort ();
+ struct input_program_pgm *inp = inp_;
+
+ if (!inp->write_case (inp->wc_data))
+ return TRNS_ERROR;
+
+ inp->case_nr++;
+ clear_case (inp, c);
+ return TRNS_CONTINUE;
}
/* REREAD transformation. */
/* Parses REREAD command. */
int
-cmd_reread (void)
+cmd_reread (struct lexer *lexer, struct dataset *ds)
{
struct file_handle *fh; /* File to be re-read. */
struct expression *e; /* Expression for column to set. */
fh = fh_get_default_handle ();
e = NULL;
- while (token != '.')
+ while (lex_token (lexer) != '.')
{
- if (lex_match_id ("COLUMN"))
+ if (lex_match_id (lexer, "COLUMN"))
{
- lex_match ('=');
+ lex_match (lexer, '=');
if (e)
{
return CMD_CASCADING_FAILURE;
}
- e = expr_parse (default_dict, EXPR_NUMBER);
+ e = expr_parse (lexer, ds, EXPR_NUMBER);
if (!e)
return CMD_CASCADING_FAILURE;
}
- else if (lex_match_id ("FILE"))
+ else if (lex_match_id (lexer, "FILE"))
{
- lex_match ('=');
- fh = fh_parse (FH_REF_FILE | FH_REF_INLINE);
+ lex_match (lexer, '=');
+ fh = fh_parse (lexer, FH_REF_FILE | FH_REF_INLINE);
if (fh == NULL)
{
expr_free (e);
return CMD_CASCADING_FAILURE;
}
- lex_get ();
}
else
{
- lex_error (NULL);
+ lex_error (lexer, NULL);
expr_free (e);
+ return CMD_CASCADING_FAILURE;
}
}
t = xmalloc (sizeof *t);
- t->reader = dfm_open_reader (fh);
+ t->reader = dfm_open_reader (fh, lexer);
t->column = e;
- add_transformation (reread_trns_proc, reread_trns_free, t);
+ add_transformation (ds, reread_trns_proc, reread_trns_free, t);
return CMD_SUCCESS;
}
/* Executes a REREAD transformation. */
static int
-reread_trns_proc (void *t_, struct ccase *c, int case_num)
+reread_trns_proc (void *t_, struct ccase *c, casenumber case_num)
{
struct reread_trns *t = t_;
/* Parses END FILE command. */
int
-cmd_end_file (void)
+cmd_end_file (struct lexer *lexer, struct dataset *ds)
{
- if (!case_source_is_class (vfm_source, &input_program_source_class))
- {
- msg (SE, _("This command may only be executed between INPUT PROGRAM "
- "and END INPUT PROGRAM."));
- return CMD_CASCADING_FAILURE;
- }
+ assert (in_input_program ());
- add_transformation (end_file_trns_proc, NULL, NULL);
+ add_transformation (ds, end_file_trns_proc, NULL, NULL);
- return lex_end_of_command ();
+ return lex_end_of_command (lexer);
}
/* Executes an END FILE transformation. */
static int
end_file_trns_proc (void *trns_ UNUSED, struct ccase *c UNUSED,
- int case_num UNUSED)
+ casenumber case_num UNUSED)
{
return TRNS_END_FILE;
}
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