/* PSPP - a program for statistical analysis.
- Copyright (C) 1997-9, 2000, 2006 Free Software Foundation, Inc.
+ Copyright (C) 1997-9, 2000, 2006, 2009 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <config.h>
#include "lexer.h"
#include <libpspp/message.h>
-#include <ctype.h>
+#include <c-ctype.h>
+#include <c-strtod.h>
#include <errno.h>
#include <limits.h>
#include <math.h>
#include <stdarg.h>
+#include <stdint.h>
#include <stdlib.h>
-#include <libpspp/alloc.h>
#include <libpspp/assertion.h>
#include <language/command.h>
#include <libpspp/message.h>
-#include <libpspp/magic.h>
#include <data/settings.h>
#include <libpspp/getl.h>
#include <libpspp/str.h>
+#include <output/journal.h>
-#include "size_max.h"
+#include "xalloc.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)
#define DUMP_TOKENS 0
+
struct lexer
{
struct string line_buffer;
int token; /* Current token. */
double tokval; /* T_POS_NUM, T_NEG_NUM: the token's value. */
- char tokid [LONG_NAME_LEN + 1]; /* T_ID: the identifier. */
+ char tokid [VAR_NAME_LEN + 1]; /* T_ID: the identifier. */
struct string tokstr; /* T_ID, T_STRING: token string value.
For T_ID, this is not truncated as is
return lex->ss;
}
+enum syntax_mode
+lex_current_syntax_mode (const struct lexer *lex)
+{
+ return source_stream_current_syntax_mode (lex->ss);
+}
+
+enum error_mode
+lex_current_error_mode (const struct lexer *lex)
+{
+ return source_stream_current_error_mode (lex->ss);
+}
+
void
lex_destroy (struct lexer *lexer)
for (;;)
{
/* Skip whitespace. */
- while (isspace ((unsigned char) *lexer->prog))
+ while (c_isspace ((unsigned char) *lexer->prog))
lexer->prog++;
if (*lexer->prog)
if (*lexer->prog == '-')
{
ds_put_char (&lexer->tokstr, *lexer->prog++);
- while (isspace ((unsigned char) *lexer->prog))
+ while (c_isspace ((unsigned char) *lexer->prog))
lexer->prog++;
- if (!isdigit ((unsigned char) *lexer->prog) && *lexer->prog != '.')
+ if (!c_isdigit ((unsigned char) *lexer->prog) && *lexer->prog != '.')
{
lexer->token = '-';
break;
lexer->token = T_POS_NUM;
/* Parse the number, copying it into tokstr. */
- while (isdigit ((unsigned char) *lexer->prog))
+ while (c_isdigit ((unsigned char) *lexer->prog))
ds_put_char (&lexer->tokstr, *lexer->prog++);
if (*lexer->prog == '.')
{
ds_put_char (&lexer->tokstr, *lexer->prog++);
- while (isdigit ((unsigned char) *lexer->prog))
+ while (c_isdigit ((unsigned char) *lexer->prog))
ds_put_char (&lexer->tokstr, *lexer->prog++);
}
if (*lexer->prog == 'e' || *lexer->prog == 'E')
ds_put_char (&lexer->tokstr, *lexer->prog++);
if (*lexer->prog == '+' || *lexer->prog == '-')
ds_put_char (&lexer->tokstr, *lexer->prog++);
- while (isdigit ((unsigned char) *lexer->prog))
+ while (c_isdigit ((unsigned char) *lexer->prog))
ds_put_char (&lexer->tokstr, *lexer->prog++);
}
/* Parse as floating point. */
- lexer->tokval = strtod (ds_cstr (&lexer->tokstr), &tail);
+ lexer->tokval = c_strtod (ds_cstr (&lexer->tokstr), &tail);
if (*tail)
{
msg (SE, _("%s does not form a valid number."),
break;
case '(': case ')': case ',': case '=': case '+': case '/':
+ case '[': case ']':
lexer->token = *lexer->prog++;
break;
}
else
{
- if (isgraph ((unsigned char) *lexer->prog))
- msg (SE, _("Bad character in input: `%c'."), *lexer->prog++);
- else
- msg (SE, _("Bad character in input: `\\%o'."), *lexer->prog++);
+ unsigned char c = *lexer->prog++;
+ char *c_name = xasprintf (c_isgraph (c) ? "%c" : "\\%o", c);
+ msg (SE, _("Bad character in input: `%s'."), c_name);
+ free (c_name);
continue;
}
}
lex_is_integer (struct lexer *lexer)
{
return (lex_is_number (lexer)
- && lexer->tokval != NOT_LONG
- && lexer->tokval >= LONG_MIN
+ && lexer->tokval > LONG_MIN
&& lexer->tokval <= LONG_MAX
&& floor (lexer->tokval) == lexer->tokval);
}
Otherwise, returns false. */
bool
lex_match_id (struct lexer *lexer, const char *s)
+{
+ return lex_match_id_n (lexer, s, 3);
+}
+
+/* If the current token is the identifier S, skips it and returns
+ true. The identifier may be abbreviated to its first N
+ letters.
+ Otherwise, returns false. */
+bool
+lex_match_id_n (struct lexer *lexer, const char *s, size_t n)
{
if (lexer->token == T_ID
- && lex_id_match (ss_cstr (s), ss_cstr (lexer->tokid)))
+ && lex_id_match_n (ss_cstr (s), ss_cstr (lexer->tokid), n))
{
lex_get (lexer);
return true;
for (;;)
{
- while (isspace ((unsigned char) *lexer->prog))
+ while (c_isspace ((unsigned char) *lexer->prog))
lexer->prog++;
if (*lexer->prog)
break;
*LINE_STARTS_COMMAND and *LINE_ENDS_COMMAND appropriately. */
void
lex_preprocess_line (struct string *line,
- enum getl_syntax syntax,
+ enum syntax_mode syntax,
bool *line_starts_command,
bool *line_ends_command)
{
strip_comments (line);
ds_rtrim (line, ss_cstr (CC_SPACES));
- *line_ends_command = (ds_chomp (line, get_endcmd ())
- || (ds_is_empty (line) && get_nulline ()));
+ *line_ends_command = (ds_chomp (line, settings_get_endcmd ())
+ || (ds_is_empty (line) && settings_get_nulline ()));
*line_starts_command = false;
if (syntax == GETL_BATCH)
{
int first = ds_first (line);
- *line_starts_command = !isspace (first);
+ *line_starts_command = !c_isspace (first);
if (first == '+' || first == '-')
*ds_data (line) = ' ';
}
Sets *SYNTAX, if SYNTAX is non-null, to the line's syntax
mode. */
bool
-lex_get_line_raw (struct lexer *lexer, enum getl_syntax *syntax)
+lex_get_line_raw (struct lexer *lexer)
{
- enum getl_syntax dummy;
- bool ok = getl_read_line (lexer->ss, &lexer->line_buffer,
- syntax != NULL ? syntax : &dummy);
+ bool ok = getl_read_line (lexer->ss, &lexer->line_buffer);
+ enum syntax_mode mode = lex_current_syntax_mode (lexer);
+ journal_write (mode == GETL_BATCH, ds_cstr (&lexer->line_buffer));
+
return ok;
}
lex_get_line (struct lexer *lexer)
{
bool line_starts_command;
- enum getl_syntax syntax = GETL_BATCH;
- if (!lex_get_line_raw (lexer, &syntax))
+ if (!lex_get_line_raw (lexer))
{
lexer->prog = NULL;
return false;
}
- lex_preprocess_line (&lexer->line_buffer, syntax,
+ lex_preprocess_line (&lexer->line_buffer,
+ lex_current_syntax_mode (lexer),
&line_starts_command, &lexer->dot);
if (line_starts_command)
char *sp, *dp;
for (sp = ds_cstr (&lexer->tokstr); sp < ds_end (&lexer->tokstr); sp++)
- if (!isprint ((unsigned char) *sp))
+ if (!c_isprint ((unsigned char) *sp))
{
hexstring = 1;
break;
byte_cnt = ds_length (&lexer->tokstr) / chars_per_byte;
if (ds_length (&lexer->tokstr) % chars_per_byte)
- msg (SE, _("String of %s digits has %d characters, which is not a "
+ msg (SE, _("String of %s digits has %zu characters, which is not a "
"multiple of %d."),
- base_name, (int) ds_length (&lexer->tokstr), chars_per_byte);
+ base_name, ds_length (&lexer->tokstr), chars_per_byte);
p = ds_cstr (&lexer->tokstr);
for (i = 0; i < byte_cnt; i++)
break;
for (;;)
{
- while (isspace ((unsigned char) *lexer->prog))
+ while (c_isspace ((unsigned char) *lexer->prog))
lexer->prog++;
if (*lexer->prog)
break;
break;
for (;;)
{
- while (isspace ((unsigned char) *lexer->prog))
+ while (c_isspace ((unsigned char) *lexer->prog))
lexer->prog++;
if (*lexer->prog)
break;
if (ds_length (&lexer->tokstr) > 255)
{
- msg (SE, _("String exceeds 255 characters in length (%d characters)."),
- (int) ds_length (&lexer->tokstr));
+ msg (SE, _("String exceeds 255 characters in length (%zu characters)."),
+ ds_length (&lexer->tokstr));
ds_truncate (&lexer->tokstr, 255);
}
{
return &lexer->tokstr;
}
+
+/* If the lexer is positioned at the (pseudo)identifier S, which
+ may contain a hyphen ('-'), skips it and returns true. Each
+ half of the identifier may be abbreviated to its first three
+ letters.
+ Otherwise, returns false. */
+bool
+lex_match_hyphenated_word (struct lexer *lexer, const char *s)
+{
+ const char *hyphen = strchr (s, '-');
+ if (hyphen == NULL)
+ return lex_match_id (lexer, s);
+ else if (lexer->token != T_ID
+ || !lex_id_match (ss_buffer (s, hyphen - s), ss_cstr (lexer->tokid))
+ || lex_look_ahead (lexer) != '-')
+ return false;
+ else
+ {
+ lex_get (lexer);
+ lex_force_match (lexer, '-');
+ lex_force_match_id (lexer, hyphen + 1);
+ return true;
+ }
+}
+
projects / pspp-builds.git / blobdiff