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/*
* $Id:$
*
* Copyright (c) 2000-2006, Darren Hiebert, Elias Pschernig
*
* 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 BlitzBasic
* (BlitzMax), PureBasic and FreeBasic language files. For now, this is kept
* quite simple - but feel free to ask for more things added any time -
* patches are of course most welcome.
*/
/*
* INCLUDE FILES
*/
#include "general.h" /* must always come first */
#include <string.h>
#include "options.h"
#include "parse.h"
#include "read.h"
#include "routines.h"
#include "vstring.h"
/*
* DATA DEFINITIONS
*/
typedef enum {
K_CONST,
K_FUNCTION,
K_LABEL,
K_TYPE,
K_VARIABLE,
K_ENUM
} BasicKind;
typedef struct {
char const *token;
BasicKind kind;
int skip;
} KeyWord;
static kindOption BasicKinds[] = {
{TRUE, 'c', "constant", "constants"},
{TRUE, 'f', "function", "functions"},
{TRUE, 'l', "label", "labels"},
{TRUE, 't', "type", "types"},
{TRUE, 'v', "variable", "variables"},
{TRUE, 'g', "enum", "enumerations"}
};
static KeyWord blitzbasic_keywords[] = {
{"const", K_CONST, 0},
{"global", K_VARIABLE, 0},
{"dim", K_VARIABLE, 0},
{"function", K_FUNCTION, 0},
{"type", K_TYPE, 0},
{NULL, 0, 0}
};
static KeyWord purebasic_keywords[] = {
{"newlist", K_VARIABLE, 0},
{"global", K_VARIABLE, 0},
{"dim", K_VARIABLE, 0},
{"procedure", K_FUNCTION, 0},
{"interface", K_TYPE, 0},
{"structure", K_TYPE, 0},
{NULL, 0, 0}
};
static KeyWord freebasic_keywords[] = {
{"const", K_CONST, 0},
{"dim as", K_VARIABLE, 1},
{"dim", K_VARIABLE, 0},
{"common", K_VARIABLE, 0},
{"function", K_FUNCTION, 0},
{"sub", K_FUNCTION, 0},
{"private sub", K_FUNCTION, 0},
{"public sub", K_FUNCTION, 0},
{"private function", K_FUNCTION, 0},
{"public function", K_FUNCTION, 0},
{"type", K_TYPE, 0},
{"enum", K_ENUM, 0},
{NULL, 0, 0}
};
/*
* FUNCTION DEFINITIONS
*/
/* Match the name of a tag (function, variable, type, ...) starting at pos. */
static char const *extract_name (char const *pos, vString * name)
{
while (isspace (*pos))
pos++;
vStringClear (name);
for (; *pos && !isspace (*pos) && *pos != '(' && *pos != ','; pos++)
vStringPut (name, *pos);
vStringTerminate (name);
return pos;
}
/* Match a keyword starting at p (case insensitive). */
static int match_keyword (const char *p, KeyWord const *kw)
{
vString *name;
size_t i;
int j;
for (i = 0; i < strlen (kw->token); i++)
{
if (tolower (p[i]) != kw->token[i])
return 0;
}
name = vStringNew ();
p += i;
for (j = 0; j < 1 + kw->skip; j++)
{
p = extract_name (p, name);
}
makeSimpleTag (name, BasicKinds, kw->kind);
vStringDelete (name);
return 1;
}
/* Match a "label:" style label. */
static void match_colon_label (char const *p)
{
char const *end = p + strlen (p) - 1;
while (isspace (*end))
end--;
if (*end == ':')
{
vString *name = vStringNew ();
vStringNCatS (name, p, end - p);
makeSimpleTag (name, BasicKinds, K_LABEL);
vStringDelete (name);
}
}
/* Match a ".label" style label. */
static void match_dot_label (char const *p)
{
if (*p == '.')
{
vString *name = vStringNew ();
extract_name (p + 1, name);
makeSimpleTag (name, BasicKinds, K_LABEL);
vStringDelete (name);
}
}
static void findBasicTags (void)
{
const char *line;
const char *extension = fileExtension (vStringValue (File.name));
KeyWord *keywords;
if (strcmp (extension, "bb") == 0)
keywords = blitzbasic_keywords;
else if (strcmp (extension, "pb") == 0)
keywords = purebasic_keywords;
else
keywords = freebasic_keywords;
while ((line = (const char *) fileReadLine ()) != NULL)
{
const char *p = line;
KeyWord const *kw;
while (isspace (*p))
p++;
/* Empty line? */
if (!*p)
continue;
/* In Basic, keywords always are at the start of the line. */
for (kw = keywords; kw->token; kw++)
if (match_keyword (p, kw)) break;
/* Is it a label? */
if (strcmp (extension, "bb") == 0)
match_dot_label (p);
else
match_colon_label (p);
}
}
parserDefinition *BasicParser (void)
{
static char const *extensions[] = { "bas", "bi", "bb", "pb", NULL };
parserDefinition *def = parserNew ("Basic");
def->kinds = BasicKinds;
def->kindCount = KIND_COUNT (BasicKinds);
def->extensions = extensions;
def->parser = findBasicTags;
return def;
}
/* vi:set tabstop=4 shiftwidth=4: */
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