106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
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/*
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*
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* Copyright (c) 2000-2001, 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 assembly language
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* files.
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*/
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/*
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* INCLUDE FILES
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*/
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#include "general.h" /* must always come first */
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#include <string.h>
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#include "parse.h"
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#include "read.h"
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#include "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_DEFINE, K_LABEL, K_MACRO
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} asmKind;
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/* indexed by asmKind */
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static kindOption AsmKinds [] = {
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{ TRUE, 'd', "define", "defines (names assigned a specified value)"},
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{ TRUE, 'l', "label", "labels (names assigned an address)"},
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{ TRUE, 'm', "macro", "macros"}
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};
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/*
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* FUNCTION DEFINITIONS
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*/
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/* Algorithm adapted from from GNU etags.
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* By Bob Weiner, Motorola Inc., 4/3/94
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* Unix and microcontroller assembly tag handling
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* look for '^ [a-zA-Z_.$] [a-zA_Z0-9_.$]*[: ^I^J]'
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*/
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static void findAsmTags (void)
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{
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vString *name = vStringNew ();
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const unsigned char *line;
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while ((line = fileReadLine ()) != NULL)
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{
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const unsigned char *cp = line;
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int c = *cp;
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/* If first char is alphabetic or one of [_.$], test for colon
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* following identifier.
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*/
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if (isalpha (c) || c == '_' || c == '.' || c == '$')
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{
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vStringPut (name, c);
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c = *++cp;
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while (isalnum (c) || c == '_' || c == '.' || c == '$')
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{
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vStringPut (name, c);
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c = *++cp;
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}
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vStringTerminate (name);
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while (isspace (c))
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c = *++cp;
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if (c == ':')
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makeSimpleTag (name, AsmKinds, K_LABEL);
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else if (c == '=' ||
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strncmp ((const char*) cp, "equ", (size_t) 3) == 0)
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makeSimpleTag (name, AsmKinds, K_DEFINE);
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else if (strcmp (vStringValue (name), ".macro") == 0)
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{
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vStringClear (name);
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while (isalnum (c) || c == '_')
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{
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vStringPut (name, c);
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c = *++cp;
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}
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vStringTerminate (name);
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if (vStringLength (name) > 0)
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makeSimpleTag (name, AsmKinds, K_MACRO);
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}
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vStringClear (name);
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}
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}
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vStringDelete (name);
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}
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extern parserDefinition* AsmParser (void)
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{
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static const char *const extensions [] = { "asm", "s", "S", NULL };
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parserDefinition* def = parserNew ("ASM");
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def->kinds = AsmKinds;
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def->kindCount = KIND_COUNT (AsmKinds);
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def->extensions = extensions;
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def->parser = findAsmTags;
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return def;
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}
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/* vi:set tabstop=8 shiftwidth=4: */
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