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141 lines
2.9 KiB
C
141 lines
2.9 KiB
C
// clang-format off
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/*
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* $Id: lisp.c 717 2009-07-07 03:40:50Z dhiebert $
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*
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* Copyright (c) 2000-2002, Darren Hiebert
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*
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* This source code is released for free distribution under the terms of the
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* GNU General Public License.
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*
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* This module contains functions for generating tags for LISP files.
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*/
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/*
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* INCLUDE FILES
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*/
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#include "third_party/ctags/general.h" /* must always come first */
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#include "third_party/ctags/parse.h"
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#include "third_party/ctags/read.h"
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#include "third_party/ctags/vstring.h"
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/*
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* DATA DEFINITIONS
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*/
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typedef enum {
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K_FUNCTION
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} lispKind;
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static kindOption LispKinds [] = {
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{ TRUE, 'f', "function", "functions" }
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};
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/*
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* FUNCTION DEFINITIONS
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*/
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/*
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* lisp tag functions
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* look for (def or (DEF, quote or QUOTE
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*/
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static int L_isdef (const unsigned char *strp)
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{
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return ( (strp [1] == 'd' || strp [1] == 'D')
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&& (strp [2] == 'e' || strp [2] == 'E')
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&& (strp [3] == 'f' || strp [3] == 'F'));
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}
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static int L_isquote (const unsigned char *strp)
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{
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return ( (*(++strp) == 'q' || *strp == 'Q')
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&& (*(++strp) == 'u' || *strp == 'U')
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&& (*(++strp) == 'o' || *strp == 'O')
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&& (*(++strp) == 't' || *strp == 'T')
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&& (*(++strp) == 'e' || *strp == 'E')
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&& isspace (*(++strp)));
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}
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static void L_getit (vString *const name, const unsigned char *dbp)
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{
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const unsigned char *p;
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if (*dbp == '\'') /* Skip prefix quote */
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dbp++;
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else if (*dbp == '(' && L_isquote (dbp)) /* Skip "(quote " */
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{
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dbp += 7;
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while (isspace (*dbp))
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dbp++;
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}
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for (p=dbp ; *p!='\0' && *p!='(' && !isspace ((int) *p) && *p!=')' ; p++)
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vStringPut (name, *p);
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vStringTerminate (name);
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if (vStringLength (name) > 0)
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makeSimpleTag (name, LispKinds, K_FUNCTION);
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vStringClear (name);
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}
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/* Algorithm adapted from from GNU etags.
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*/
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static void findLispTags (void)
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{
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vString *name = vStringNew ();
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const unsigned char* p;
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while ((p = fileReadLine ()) != NULL)
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{
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if (*p == '(')
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{
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if (L_isdef (p))
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{
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while (*p != '\0' && !isspace ((int) *p))
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p++;
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while (isspace ((int) *p))
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p++;
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L_getit (name, p);
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}
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else
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{
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/* Check for (foo::defmumble name-defined ... */
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do
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p++;
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while (*p != '\0' && !isspace ((int) *p)
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&& *p != ':' && *p != '(' && *p != ')');
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if (*p == ':')
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{
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do
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p++;
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while (*p == ':');
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if (L_isdef (p - 1))
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{
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while (*p != '\0' && !isspace ((int) *p))
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p++;
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while (isspace (*p))
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p++;
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L_getit (name, p);
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}
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}
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}
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}
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}
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vStringDelete (name);
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}
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extern parserDefinition* LispParser (void)
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{
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static const char *const extensions [] = {
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"cl", "clisp", "el", "l", "lisp", "lsp", NULL
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};
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parserDefinition* def = parserNew ("Lisp");
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def->kinds = LispKinds;
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def->kindCount = KIND_COUNT (LispKinds);
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def->extensions = extensions;
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def->parser = findLispTags;
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return def;
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}
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/* vi:set tabstop=4 shiftwidth=4: */
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