/* Definitions and global variables for intervals.
- Copyright (C) 1993-1994, 2000-2011 Free Software Foundation, Inc.
+ Copyright (C) 1993-1994, 2000-2012 Free Software Foundation, Inc.
This file is part of GNU Emacs.
Lisp_Object plist;
};
-/* These are macros for dealing with the interval tree. */
+/* These are macros for dealing with the interval tree. */
-/* Size of the structure used to represent an interval */
+/* Size of the structure used to represent an interval. */
#define INTERVAL_SIZE (sizeof (struct interval))
-/* Size of a pointer to an interval structure */
+/* Size of a pointer to an interval structure. */
#define INTERVAL_PTR_SIZE (sizeof (struct interval *))
#define NULL_INTERVAL_P(i) ((i) == NULL_INTERVAL)
-/* True if this interval has no right child. */
+/* True if this interval has no right child. */
#define NULL_RIGHT_CHILD(i) ((i)->right == NULL_INTERVAL)
-/* True if this interval has no left child. */
+/* True if this interval has no left child. */
#define NULL_LEFT_CHILD(i) ((i)->left == NULL_INTERVAL)
-/* True if this interval has no parent. */
+/* True if this interval has no parent. */
#define NULL_PARENT(i) ((i)->up_obj || (i)->up.interval == 0)
-/* True if this interval is the left child of some other interval. */
+/* True if this interval is the left child of some other interval. */
#define AM_LEFT_CHILD(i) (! NULL_PARENT (i) \
&& INTERVAL_PARENT (i)->left == (i))
-/* True if this interval is the right child of some other interval. */
+/* True if this interval is the right child of some other interval. */
#define AM_RIGHT_CHILD(i) (! NULL_PARENT (i) \
&& INTERVAL_PARENT (i)->right == (i))
-/* True if this interval has no children. */
+/* True if this interval has no children. */
#define LEAF_INTERVAL_P(i) ((i)->left == NULL_INTERVAL \
&& (i)->right == NULL_INTERVAL)
-/* True if this interval has no parent and is therefore the root. */
+/* True if this interval has no parent and is therefore the root. */
#define ROOT_INTERVAL_P(i) (NULL_PARENT (i))
-/* True if this interval is the only interval in the interval tree. */
+/* True if this interval is the only interval in the interval tree. */
#define ONLY_INTERVAL_P(i) (ROOT_INTERVAL_P ((i)) && LEAF_INTERVAL_P ((i)))
-/* True if this interval has both left and right children. */
+/* True if this interval has both left and right children. */
#define BOTH_KIDS_P(i) ((i)->left != NULL_INTERVAL \
&& (i)->right != NULL_INTERVAL)
/* The total size of all text represented by this interval and all its
- children in the tree. This is zero if the interval is null. */
+ children in the tree. This is zero if the interval is null. */
#define TOTAL_LENGTH(i) ((i) == NULL_INTERVAL ? 0 : (i)->total_length)
-/* The size of text represented by this interval alone. */
+/* The size of text represented by this interval alone. */
#define LENGTH(i) ((i) == NULL_INTERVAL ? 0 : (TOTAL_LENGTH ((i)) \
- TOTAL_LENGTH ((i)->right) \
- TOTAL_LENGTH ((i)->left)))
/* The position of the character just past the end of I. Note that
- the position cache i->position must be valid for this to work. */
+ the position cache i->position must be valid for this to work. */
#define INTERVAL_LAST_POS(i) ((i)->position + LENGTH ((i)))
-/* The total size of the left subtree of this interval. */
+/* The total size of the left subtree of this interval. */
#define LEFT_TOTAL_LENGTH(i) ((i)->left ? (i)->left->total_length : 0)
-/* The total size of the right subtree of this interval. */
+/* The total size of the right subtree of this interval. */
#define RIGHT_TOTAL_LENGTH(i) ((i)->right ? (i)->right->total_length : 0)
-/* These macros are for dealing with the interval properties. */
+/* These macros are for dealing with the interval properties. */
/* True if this is a default interval, which is the same as being null
- or having no properties. */
+ or having no properties. */
#define DEFAULT_INTERVAL_P(i) (NULL_INTERVAL_P (i) || EQ ((i)->plist, Qnil))
/* Test what type of parent we have. Three possibilities: another
} \
while (0)
-/* Reset this interval to its vanilla, or no-property state. */
+/* Reset this interval to its vanilla, or no-property state. */
#define RESET_INTERVAL(i) \
{ \
(i)->total_length = (i)->position = 0; \
(i)->plist = Qnil; \
}
-/* Copy the cached property values of interval FROM to interval TO. */
+/* Copy the cached property values of interval FROM to interval TO. */
#define COPY_INTERVAL_CACHE(from,to) \
{ \
(to)->write_protect = (from)->write_protect; \
(to)->rear_sticky = (from)->rear_sticky; \
}
-/* Copy only the set bits of FROM's cache. */
+/* Copy only the set bits of FROM's cache. */
#define MERGE_INTERVAL_CACHE(from,to) \
{ \
if ((from)->write_protect) (to)->write_protect = 1; \
/* Macro determining whether the properties of an interval being
inserted should be merged with the properties of the text where
- they are being inserted. */
+ they are being inserted. */
#define MERGE_INSERTIONS(i) 1
/* Macro determining if an invisible interval should be displayed
- as a special glyph, or not at all. */
+ as a special glyph, or not at all. */
#define DISPLAY_INVISIBLE_GLYPH(i) 0
-/* Is this interval visible? Replace later with cache access */
+/* Is this interval visible? Replace later with cache access. */
#define INTERVAL_VISIBLE_P(i) \
(! NULL_INTERVAL_P (i) && NILP (textget ((i)->plist, Qinvisible)))
-/* Is this interval writable? Replace later with cache access */
+/* Is this interval writable? Replace later with cache access. */
#define INTERVAL_WRITABLE_P(i) \
(! NULL_INTERVAL_P (i) \
&& (NILP (textget ((i)->plist, Qread_only)) \
: !NILP (Vinhibit_read_only))))) \
/* Macros to tell whether insertions before or after this interval
- should stick to it. */
+ should stick to it. */
/* Replace later with cache access */
/*#define FRONT_STICKY_P(i) ((i)->front_sticky != 0)
#define END_STICKY_P(i) ((i)->rear_sticky != 0)*/
? !NILP (prop) \
: invisible_p (prop, BVAR (current_buffer, invisibility_spec)))
-/* Declared in alloc.c */
+/* Declared in alloc.c. */
extern INTERVAL make_interval (void);
-/* Declared in intervals.c */
+/* Declared in intervals.c. */
extern INTERVAL create_root_interval (Lisp_Object);
extern void copy_properties (INTERVAL, INTERVAL);
Lisp_Object *, int);
extern INTERVAL interval_of (ptrdiff_t, Lisp_Object);
-/* Defined in xdisp.c */
+/* Defined in xdisp.c. */
extern int invisible_p (Lisp_Object, Lisp_Object);
-/* Declared in textprop.c */
+/* Declared in textprop.c. */
-/* Types of hooks. */
+/* Types of hooks. */
extern Lisp_Object Qpoint_left;
extern Lisp_Object Qpoint_entered;
extern Lisp_Object Qmodification_hooks;
extern Lisp_Object Qlocal_map;
extern Lisp_Object Qkeymap;
-/* Visual properties text (including strings) may have. */
+/* Visual properties text (including strings) may have. */
extern Lisp_Object Qfont;
extern Lisp_Object Qinvisible, Qintangible;
-/* Sticky properties */
+/* Sticky properties. */
extern Lisp_Object Qfront_sticky, Qrear_nonsticky;
EXFUN (Fget_char_property, 3);
HCoop / bpt / emacs.git / blobdiff