expressions: Major work to improve error messages.

[pspp] / src / data / format.h

diff --git a/src/data/format.h b/src/data/format.h
index 16ffc4b5213d4ede6a476b26f6daebc5e3fa4743..d6779d4b3f5f6dccab20e952d55006cf835eaf0e 100644 (file)
--- a/src/data/format.h
+++ b/src/data/format.h
@@ -20,9 +20,13 @@
 /* Display format types. */
 
 #include <stdbool.h>
+#include <stdint.h>
 #include "data/val-type.h"
 #include "libpspp/str.h"
 
+struct fmt_settings;
+struct msg_location;
+
 /* How a format is going to be used. */
 enum fmt_use
   {
@@ -53,7 +57,7 @@ enum fmt_category
   };
 
 /* Format type. */
-enum fmt_type
+enum ATTRIBUTE ((packed)) fmt_type
   {
 #define FMT(NAME, METHOD, IMIN, OMIN, IO, CATEGORY) FMT_##NAME,
 #include "format.def"
@@ -72,8 +76,8 @@ enum fmt_type
 struct fmt_spec
   {
     enum fmt_type type;                /* One of FMT_*. */
-    int w;                     /* Width. */
-    int d;                     /* Number of decimal places. */
+    uint8_t d;                 /* Number of decimal places. */
+    uint16_t w;                        /* Width. */
   };
 
 /* Maximum width of any numeric format. */
@@ -82,7 +86,8 @@ struct fmt_spec
 /* Constructing formats. */
 struct fmt_spec fmt_for_input (enum fmt_type, int w, int d) PURE_FUNCTION;
 struct fmt_spec fmt_for_output (enum fmt_type, int w, int d) PURE_FUNCTION;
-struct fmt_spec fmt_for_output_from_input (const struct fmt_spec *);
+struct fmt_spec fmt_for_output_from_input (const struct fmt_spec *,
+                                           const struct fmt_settings *);
 struct fmt_spec fmt_default_for_width (int width);
 
 /* Verifying formats. */
@@ -92,6 +97,10 @@ bool fmt_check_output (const struct fmt_spec *);
 bool fmt_check_type_compat (const struct fmt_spec *, enum val_type);
 bool fmt_check_width_compat (const struct fmt_spec *, int var_width);
 
+char *fmt_check__ (const struct fmt_spec *, enum fmt_use);
+char *fmt_check_type_compat__ (const struct fmt_spec *, enum val_type);
+char *fmt_check_width_compat__ (const struct fmt_spec *, int var_width);
+
 /* Working with formats. */
 int fmt_var_width (const struct fmt_spec *);
 char *fmt_to_string (const struct fmt_spec *, char s[FMT_STRING_LEN_MAX + 1]);
@@ -133,27 +142,11 @@ bool fmt_usable_for_input (enum fmt_type) PURE_FUNCTION;
 
 int fmt_to_io (enum fmt_type) PURE_FUNCTION;
 bool fmt_from_io (int io, enum fmt_type *);
+bool fmt_from_u32 (uint32_t, int var_width, bool loose, struct fmt_spec *);
 
 const char *fmt_date_template (enum fmt_type, int width) PURE_FUNCTION;
 const char *fmt_gui_name (enum fmt_type);
 \f
-/* Format settings.
-
-   A fmt_settings is really just a collection of one "struct fmt_number_style"
-   for each format type. */
-struct fmt_settings *fmt_settings_create (void);
-void fmt_settings_destroy (struct fmt_settings *);
-struct fmt_settings *fmt_settings_clone (const struct fmt_settings *);
-
-void fmt_settings_set_decimal (struct fmt_settings *, char);
-
-const struct fmt_number_style *fmt_settings_get_style (
-  const struct fmt_settings *, enum fmt_type);
-void fmt_settings_set_style (struct fmt_settings *, enum fmt_type,
-                             char decimal, char grouping,
-                             const char *neg_prefix, const char *prefix,
-                             const char *suffix, const char *neg_suffix);
-\f
 /* A prefix or suffix for a numeric output format. */
 struct fmt_affix
   {
@@ -161,7 +154,8 @@ struct fmt_affix
     int width;                  /* Display width in columns (see wcwidth()). */
   };
 
-/* A numeric output style. */
+/* A numeric output style.  This can express the basic numeric formats (in the
+   FMT_CAT_BASIC category) and custom currency formats (FMT_CCx). */
 struct fmt_number_style
   {
     struct fmt_affix neg_prefix; /* Negative prefix. */
@@ -172,7 +166,7 @@ struct fmt_number_style
     char grouping;               /* Grouping character: ',', '.', or 0. */
 
     /* A fmt_affix may require more bytes than its display width; for example,
-       U+00A5 (¥) is 3 bytes in UTF-8 but occupies only one display column.
+       U+00A5 (¥) is 2 bytes in UTF-8 but occupies only one display column.
        This member is the sum of the number of bytes required by all of the
        fmt_affix members in this struct, minus their display widths.  Thus, it
        can be used to size memory allocations: for example, the formatted
@@ -181,9 +175,41 @@ struct fmt_number_style
     int extra_bytes;
   };
 
+struct fmt_number_style *fmt_number_style_from_string (const char *);
+struct fmt_number_style *fmt_number_style_clone (
+  const struct fmt_number_style *);
+void fmt_number_style_destroy (struct fmt_number_style *);
+
+char *fmt_number_style_to_string (const struct fmt_number_style *);
+
 int fmt_affix_width (const struct fmt_number_style *);
 int fmt_neg_affix_width (const struct fmt_number_style *);
+\f
+/* Number of custom currency styles. */
+#define FMT_N_CCS 5             /* FMT_CCA through FMT_CCE. */
+
+struct fmt_settings
+  {
+    int epoch;                               /* 0 for default epoch. */
+    char decimal;                            /* '.' or ','. */
+    struct fmt_number_style *ccs[FMT_N_CCS]; /* CCA through CCE. */
+  };
+#define FMT_SETTINGS_INIT { .decimal = '.' }
+
+void fmt_settings_init (struct fmt_settings *);
+void fmt_settings_uninit (struct fmt_settings *);
+struct fmt_settings fmt_settings_copy (const struct fmt_settings *);
 
+const struct fmt_number_style *fmt_settings_get_style (
+  const struct fmt_settings *, enum fmt_type);
+int fmt_settings_get_epoch (const struct fmt_settings *);
+
+void fmt_settings_set_cc (struct fmt_settings *, enum fmt_type,
+                          struct fmt_number_style *);
+\f
 extern const struct fmt_spec F_8_0 ;
+extern const struct fmt_spec F_8_2 ;
+extern const struct fmt_spec F_4_3 ;
+extern const struct fmt_spec F_5_1 ;
 
 #endif /* data/format.h */