attr.c File Reference

implementation of dynamic attributes More...

#include <cgraph/cghdr.h>
#include <cgraph/streq.h>
#include <cgraph/unreachable.h>
#include <stddef.h>
#include <stdbool.h>

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Macros
#define	MINATTR   4 /* minimum allocation */

Functions
static void	freesym (void *obj)
static void	init_all_attrs (Agraph_t *g)
Agdatadict_t *	agdatadict (Agraph_t *g, bool cflag)
static Dict_t *	agdictof (Agraph_t *g, int kind)
static Agsym_t *	agnewsym (Agraph_t *g, const char *name, const char *value, int id, int kind)
static void	agcopydict (Dict_t *src, Dict_t *dest, Agraph_t *g, int kind)
static Agdatadict_t *	agmakedatadict (Agraph_t *g)
static Agsym_t *	agdictsym (Dict_t *dict, char *name)
static Agsym_t *	aglocaldictsym (Dict_t *dict, char *name)
Agsym_t *	agattrsym (void *obj, char *name)
	looks up a string attribute for a graph object given as an argument
static int	topdictsize (Agobj_t *obj)
static Agrec_t *	agmakeattrs (Agraph_t *context, void *obj)
static void	freeattr (Agobj_t *obj, Agattr_t *attr)
Agattr_t *	agattrrec (void *obj)
static void	addattr (Agraph_t *g, Agobj_t *obj, Agsym_t *sym)
static Agsym_t *	getattr (Agraph_t *g, int kind, char *name)
static void	unviewsubgraphsattr (Agraph_t *parent, char *name)
static Agsym_t *	setattr (Agraph_t *g, int kind, char *name, const char *value)
Agsym_t *	agattr (Agraph_t *g, int kind, char *name, const char *value)
	creates or looks up attributes of a graph
Agsym_t *	agnxtattr (Agraph_t *g, int kind, Agsym_t *attr)
	permits traversing the list of attributes of a given type
void	agraphattr_init (Agraph_t *g)
int	agraphattr_delete (Agraph_t *g)
void	agnodeattr_init (Agraph_t *g, Agnode_t *n)
void	agnodeattr_delete (Agnode_t *n)
void	agedgeattr_init (Agraph_t *g, Agedge_t *e)
void	agedgeattr_delete (Agedge_t *e)
char *	agget (void *obj, char *name)
char *	agxget (void *obj, Agsym_t *sym)
int	agset (void *obj, char *name, const char *value)
int	agxset (void *obj, Agsym_t *sym, const char *value)
int	agsafeset (void *obj, char *name, const char *value, const char *def)
	ensures the given attribute is declared before setting it locally on an object
static void	agraphattr_init_wrapper (Agraph_t *g, Agobj_t *ignored1, void *ignored2)
int	agcopyattr (void *oldobj, void *newobj)
	copies all of the attributes from one object to another

Variables
Dtdisc_t	AgDataDictDisc
static char	DataDictName [] = "_AG_datadict"
static Agdesc_t	ProtoDesc
static Agraph_t *	ProtoGraph
char *	AgDataRecName = "_AG_strdata"

Macro Definition Documentation

MINATTR

#define MINATTR   4 /* minimum allocation */

Definition at line 29 of file attr.c.

Function Documentation

addattr()

static void addattr ( Agraph_t *  g, Agobj_t *  obj, Agsym_t *  sym  )

static

Definition at line 235 of file attr.c.

References agattrrec(), agrealloc(), agstrdup(), Agsym_s::defval, Agsym_s::id, MINATTR, NULL, and Agattr_s::str.

Referenced by setattr().

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agcopydict()

static void agcopydict ( Dict_t *  src, Dict_t *  dest, Agraph_t *  g, int  kind  )

static

Definition at line 95 of file attr.c.

References agnewsym(), Agsym_s::defval, dtfirst, dtinsert, dtnext, dtsize(), Agsym_s::fixed, Agsym_s::id, kind, Agsym_s::name, and Agsym_s::print.

Referenced by agmakedatadict().

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agdictof()

static Dict_t * agdictof ( Agraph_t *  g, int  kind  )

static

Definition at line 57 of file attr.c.

References agdatadict(), agerrorf(), AGINEDGE, AGNODE, AGOUTEDGE, AGRAPH, Agdatadict_s::dict, Agdatadict_s::e, Agdatadict_s::g, kind, Agdatadict_s::n, and NULL.

Referenced by agmakeattrs(), agnxtattr(), getattr(), setattr(), and topdictsize().

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agdictsym()

static Agsym_t * agdictsym ( Dict_t *  dict, char *  name  )

static

Definition at line 137 of file attr.c.

References dtsearch, key, and Agsym_s::name.

Referenced by agattrsym(), aglocaldictsym(), getattr(), and setattr().

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aglocaldictsym()

static Agsym_t * aglocaldictsym ( Dict_t *  dict, char *  name  )

static

Definition at line 145 of file attr.c.

References agdictsym(), dtview(), NULL, and view.

Referenced by agxset(), setattr(), and unviewsubgraphsattr().

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agmakeattrs()

static Agrec_t * agmakeattrs ( Agraph_t *  context, void *  obj  )

static

Definition at line 182 of file attr.c.

References agalloc(), agbindrec(), AgDataRecName, agdictof(), agraphof(), agroot(), agstrdup(), AGTYPE, Agsym_s::defval, Agattr_s::dict, dtfirst, dtnext, Agsym_s::id, MINATTR, NULL, Agattr_s::str, and topdictsize().

Referenced by agedgeattr_init(), agnodeattr_init(), and agraphattr_init().

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agmakedatadict()

static Agdatadict_t * agmakedatadict ( Agraph_t *  g )

static

Definition at line 108 of file attr.c.

References agbindrec(), agcopydict(), agdatadict(), AgDataDictDisc, agdtopen(), AGEDGE, AGNODE, agparent(), AGRAPH, DataDictName, Agdatadict_s::dict, Dttree, dtview(), Agdatadict_s::e, Agdatadict_s::g, Agdatadict_s::n, and ProtoGraph.

Referenced by agraphattr_init().

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agnewsym()

static Agsym_t * agnewsym ( Agraph_t *  g, const char *  name, const char *  value, int  id, int  kind  )

static

Definition at line 84 of file attr.c.

References agalloc(), agstrdup(), Agsym_s::defval, id, Agsym_s::id, kind, Agsym_s::kind, and Agsym_s::name.

Referenced by agcopydict(), agxset(), setattr(), and unviewsubgraphsattr().

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agraphattr_init_wrapper()

static void agraphattr_init_wrapper ( Agraph_t *  g, Agobj_t *  ignored1, void *  ignored2  )

static

Definition at line 519 of file attr.c.

References agraphattr_init().

Referenced by init_all_attrs().

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freeattr()

static void freeattr ( Agobj_t *  obj, Agattr_t *  attr  )

static

Definition at line 208 of file attr.c.

References agfree(), agraphof(), agstrfree(), Agattr_s::str, and topdictsize().

Referenced by agedgeattr_delete(), agnodeattr_delete(), and agraphattr_delete().

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freesym()

static void freesym ( void *  obj )

static

Definition at line 220 of file attr.c.

References Ag_G_global, agfree(), agstrfree(), Agsym_s::defval, and Agsym_s::name.

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getattr()

static Agsym_t * getattr ( Agraph_t *  g, int  kind, char *  name  )

static

Definition at line 248 of file attr.c.

References agdictof(), agdictsym(), and kind.

Referenced by agattr(), and unviewsubgraphsattr().

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init_all_attrs()

static void init_all_attrs ( Agraph_t *  g )

static

Definition at line 532 of file attr.c.

References agapply(), agedgeattr_init(), agfstnode(), agfstout(), agnodeattr_init(), agnxtnode(), agnxtout(), agraphattr_init_wrapper(), agroot(), and NULL.

Referenced by agdatadict().

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setattr()

static Agsym_t * setattr ( Agraph_t *  g, int  kind, char *  name, const char *  value  )

static

Definition at line 278 of file attr.c.

References addattr(), agapply(), agdatadict(), agdictof(), agdictsym(), agfstnode(), agfstout(), AGINEDGE, aglocaldictsym(), agmethod_upd(), agnewsym(), AGNODE, agnxtnode(), agnxtout(), AGOUTEDGE, AGRAPH, agroot(), agstrdup(), agstrfree(), agwarningf(), agxset(), Agsym_s::defval, dtinsert, dtsize(), Agsym_s::id, kind, streq(), UNREACHABLE, and unviewsubgraphsattr().

Referenced by agattr().

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topdictsize()

static int topdictsize ( Agobj_t *  obj )

static

Definition at line 173 of file attr.c.

References agdictof(), agraphof(), agroot(), AGTYPE, and dtsize().

Referenced by agmakeattrs(), agxget(), agxset(), and freeattr().

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unviewsubgraphsattr()

static void unviewsubgraphsattr ( Agraph_t *  parent, char *  name  )

static

Definition at line 258 of file attr.c.

References agdatadict(), agfstsubg(), aglocaldictsym(), agnewsym(), agnxtsubg(), AGRAPH, agroot(), agxget(), Agdatadict_s::dict, dtinsert, Agdatadict_s::g, getattr(), Agsym_s::id, and parent.

Referenced by setattr().

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Variable Documentation

AgDataDictDisc

Dtdisc_t AgDataDictDisc

Initial value:

= {
    (int) offsetof(Agsym_t, name),      
    -1,
    (int) offsetof(Agsym_t, link),
    NULL,
    freesym,
    NULL,
}

Definition at line 33 of file attr.c.

Referenced by agmakedatadict().

AgDataRecName

char* AgDataRecName = "_AG_strdata"

Definition at line 171 of file attr.c.

Referenced by agattrrec(), agedgeattr_delete(), agmakeattrs(), agnodeattr_delete(), newedge(), and newnode().

DataDictName

char DataDictName[] = "_AG_datadict"

static

Definition at line 42 of file attr.c.

Referenced by agdatadict(), and agmakedatadict().

ProtoDesc

Agdesc_t ProtoDesc

static

Initial value:

= {.directed = true, .no_loop = true,
                             .no_write = true}

Definition at line 44 of file attr.c.

Referenced by agattr().

ProtoGraph

Agraph_t* ProtoGraph

static

Definition at line 46 of file attr.c.

Referenced by agattr(), and agmakedatadict().