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/*
*
* Copyright (c) 2000-2001, Darren Hiebert
*
* This source code is released for free distribution under the terms of the
* GNU General Public License.
*
* This module contains functions for generating tags for Python language
* files.
*/
/*
* INCLUDE FILES
*/
#include "general.h" /* must always come first */
#include <glib.h>
#include <string.h>
#include "parse.h"
#include "read.h"
#include "vstring.h"
/*
* DATA DEFINITIONS
*/
typedef enum {
K_CLASS, K_FUNCTION, K_METHOD
} pythonKind;
static kindOption PythonKinds [] = {
{ TRUE, 'c', "class", "classes" },
{ TRUE, 'f', "function", "functions" },
{ TRUE, 'm', "member", "methods" }
};
typedef struct _lastClass {
gchar *name;
gint indent;
} lastClass;
/*
* FUNCTION DEFINITIONS
*/
// remove all previous classes with more indent than the current one
static GList *clean_class_list(GList *list, gint indent)
{
GList *tmp, *tmp2;
tmp = g_list_first(list);
while (tmp != NULL)
{
if (((lastClass*)tmp->data)->indent >= indent)
{
g_free(((lastClass*)tmp->data)->name);
g_free(tmp->data);
tmp2 = tmp->next;
list = g_list_remove(list, tmp->data);
tmp = tmp2;
}
else
{
tmp = tmp->next;
}
}
return list;
}
static void findPythonTags (void)
{
GList *parents = NULL, *tmp; // list of classes which are around the token
vString *name = vStringNew ();
gint indent;
const unsigned char *line;
boolean inMultilineString = FALSE;
while ((line = fileReadLine ()) != NULL)
{
const unsigned char *cp = line;
indent = 0;
while (*cp != '\0')
{
if (*cp=='"' &&
strncmp ((const char*) cp, "\"\"\"", (size_t) 3) == 0)
{
inMultilineString = (boolean) !inMultilineString;
cp += 3;
}
if (*cp=='\'' &&
strncmp ((const char*) cp, "'''", (size_t) 3) == 0)
{
inMultilineString = (boolean) !inMultilineString;
cp += 3;
}
if (inMultilineString)
++cp;
else if (isspace ((int) *cp))
{
cp++;
// count indentation amount of current line
// the indentation has to be made with tabs only _or_ spaces only, if they are mixed
// the code below gets confused
indent++;
}
else if (*cp == '#')
break;
else if (strncmp ((const char*) cp, "class", (size_t) 5) == 0)
{
cp += 5;
if (isspace ((int) *cp))
{
GList *last = g_list_last(parents);
lastClass *lastclass = NULL;
lastClass *newclass = g_new(lastClass, 1);
if (last != NULL) lastclass = last->data;
while (isspace ((int) *cp))
++cp;
while (isalnum ((int) *cp) || *cp == '_')
{
vStringPut (name, (int) *cp);
++cp;
}
vStringTerminate (name);
parents = clean_class_list(parents, indent);
newclass->name = g_strdup(vStringValue(name));
newclass->indent = indent;
parents = g_list_append(parents, newclass);
makeSimpleTag (name, PythonKinds, K_CLASS);
vStringClear (name);
}
}
else if (strncmp ((const char*) cp, "def", (size_t) 3) == 0)
{
cp += 3;
if (isspace ((int) *cp))
{
GList *last;
lastClass *lastclass = NULL;
parents = clean_class_list(parents, indent);
last = g_list_last(parents);
if (last != NULL) lastclass = last->data;
while (isspace ((int) *cp))
++cp;
while (isalnum ((int) *cp) || *cp == '_')
{
vStringPut (name, (int) *cp);
++cp;
}
vStringTerminate (name);
if (!isspace(*line) || lastclass == NULL || strlen(lastclass->name) <= 0)
makeSimpleTag (name, PythonKinds, K_FUNCTION);
else
makeSimpleScopedTag (name, PythonKinds, K_METHOD,
PythonKinds[K_CLASS].name, lastclass->name, "public");
vStringClear (name);
}
}
else if (*cp != '\0')
{
do
++cp;
while (isalnum ((int) *cp) || *cp == '_');
}
}
}
vStringDelete (name);
// clear the remaining elements in the list
tmp = g_list_first(parents);
while (tmp != NULL)
{
if (tmp->data)
{
g_free(((lastClass*)tmp->data)->name);
g_free(tmp->data);
}
tmp = tmp->next;
}
g_list_free(parents);
}
extern parserDefinition* PythonParser (void)
{
static const char *const extensions [] = { "py", "python", NULL };
parserDefinition* def = parserNew ("Python");
def->kinds = PythonKinds;
def->kindCount = KIND_COUNT (PythonKinds);
def->extensions = extensions;
def->parser = findPythonTags;
return def;
}
/* vi:set tabstop=8 shiftwidth=4: */
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