SDCC.lex - lexical analyser for use with sdcc ( a freeware compiler for
8/16 bit microcontrollers)
Written by : Sandeep Dutta . sandeep.dutta@usa.net (1997)
-
+
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
+
In other words, you are welcome to use, share and improve this program.
You are forbidden to forbid anyone else to use, share and improve
- what you give them. Help stamp out software-hoarding!
+ what you give them. Help stamp out software-hoarding!
-------------------------------------------------------------------------*/
D [0-9]
/* forward declarations */
static char *stringLiteral(void);
static void count(void);
-static int process_pragma(char *);
+static int process_pragma(const char *);
static int check_type(void);
static int isTargetKeyword(char *s);
static int checkCurrFile(char *s);
"^" { count(); return('^'); }
"|" { count(); return('|'); }
"?" { count(); return('?'); }
-^#pragma.*"\n" { count(); process_pragma(yytext); }
+^#pragma.*$ { count(); process_pragma(yytext); }
^(#line.*"\n")|(#.*"\n") { count(); checkCurrFile(yytext); }
^[^(]+"("[0-9]+") : error"[^\n]+ { werror(E_PRE_PROC_FAILED, yytext); count(); }
}
-enum pragma_id {
+enum {
P_SAVE = 1,
P_RESTORE,
P_NOINDUCTION,
Safe_free(src);
}
-static void doPragma(int op, char *cp)
+/*
+ * returns 1 if the pragma was processed, 0 if not
+ */
+static int doPragma(int id, const char *name, const char *cp)
{
- int i;
+ struct pragma_token_s token;
+ int err = 0;
+ int processed = 1;
- switch (op) {
- case P_SAVE:
- {
- STACK_PUSH(options_stack, cloneOptions(&options));
- STACK_PUSH(optimize_stack, cloneOptimize(&optimize));
- STACK_PUSH(SDCCERRG_stack, cloneSDCCERRG(&_SDCCERRG));
- }
- break;
+ init_pragma_token(&token);
- case P_RESTORE:
+ switch (id)
{
- struct options *optionsp;
- struct optimize *optimizep;
- struct SDCCERRG *sdccerrgp;
+ case P_SAVE:
+ {
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
- optionsp = STACK_POP(options_stack);
- copyAndFreeOptions(&options, optionsp);
+ STACK_PUSH(options_stack, cloneOptions(&options));
+ STACK_PUSH(optimize_stack, cloneOptimize(&optimize));
+ STACK_PUSH(SDCCERRG_stack, cloneSDCCERRG(&_SDCCERRG));
+ }
+ break;
- optimizep = STACK_POP(optimize_stack);
- copyAndFreeOptimize(&optimize, optimizep);
+ case P_RESTORE:
+ {
+ struct options *optionsp;
+ struct optimize *optimizep;
+ struct SDCCERRG *sdccerrgp;
+
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
- sdccerrgp = STACK_POP(SDCCERRG_stack);
- copyAndFreeSDCCERRG(&_SDCCERRG, sdccerrgp);
- }
- break;
+ optionsp = STACK_POP(options_stack);
+ copyAndFreeOptions(&options, optionsp);
+
+ optimizep = STACK_POP(optimize_stack);
+ copyAndFreeOptimize(&optimize, optimizep);
+
+ sdccerrgp = STACK_POP(SDCCERRG_stack);
+ copyAndFreeSDCCERRG(&_SDCCERRG, sdccerrgp);
+ }
+ break;
- case P_NOINDUCTION:
- optimize.loopInduction = 0;
- break;
+ case P_NOINDUCTION:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
- case P_NOINVARIANT:
- optimize.loopInvariant = 0;
- break;
+ optimize.loopInduction = 0;
+ break;
- case P_INDUCTION:
- optimize.loopInduction = 1;
- break;
+ case P_NOINVARIANT:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
- case P_STACKAUTO:
- options.stackAuto = 1;
- break;
+ optimize.loopInvariant = 0;
+ break;
- case P_NOJTBOUND:
- optimize.noJTabBoundary = 1;
- break;
+ case P_INDUCTION:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
- case P_NOGCSE:
- optimize.global_cse = 0;
- break;
+ optimize.loopInduction = 1;
+ break;
- case P_NOOVERLAY:
- options.noOverlay = 1;
- break;
+ case P_STACKAUTO:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
- case P_LESSPEDANTIC:
- options.lessPedantic = 1;
- setErrorLogLevel(ERROR_LEVEL_WARNING);
- break;
+ options.stackAuto = 1;
+ break;
- case P_CALLEE_SAVES:
- /* append to the functions already listed
- in callee-saves */
- setParseWithComma(&options.calleeSavesSet, cp);
- break;
+ case P_NOJTBOUND:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
- case P_EXCLUDE:
- {
- deleteSet(&options.excludeRegsSet);
- setParseWithComma(&options.excludeRegsSet, cp);
- }
- break;
+ optimize.noJTabBoundary = 1;
+ break;
- case P_NOIV:
- options.noiv = 1;
- break;
+ case P_NOGCSE:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
- case P_LOOPREV:
- optimize.noLoopReverse = 1;
- break;
+ optimize.global_cse = 0;
+ break;
- case P_OVERLAY_:
- break; /* notyet */
+ case P_NOOVERLAY:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
- case P_DISABLEWARN:
- if (sscanf(cp, "%d", &i) && (i<MAX_ERROR_WARNING))
+ options.noOverlay = 1;
+ break;
+
+ case P_LESSPEDANTIC:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ options.lessPedantic = 1;
+ setErrorLogLevel(ERROR_LEVEL_WARNING);
+ break;
+
+ case P_CALLEE_SAVES:
+ /* append to the functions already listed
+ in callee-saves */
+ setParseWithComma(&options.calleeSavesSet, (char *)cp);
+ err = -1;
+ break;
+
+ case P_EXCLUDE:
{
- setWarningDisabled(i);
+ deleteSet(&options.excludeRegsSet);
+ setParseWithComma(&options.excludeRegsSet, (char *)cp);
+ err = -1;
}
- break;
-
- case P_OPTCODESPEED:
- optimize.codeSpeed = 1;
- optimize.codeSize = 0;
- break;
-
- case P_OPTCODESIZE:
- optimize.codeSpeed = 0;
- optimize.codeSize = 1;
- break;
-
- case P_OPTCODEBALANCED:
- optimize.codeSpeed = 0;
- optimize.codeSize = 0;
- break;
-
- case P_STD_C89:
- options.std_c99 = 0;
- options.std_sdcc = 0;
- break;
-
- case P_STD_C99:
- options.std_c99 = 1;
- options.std_sdcc = 0;
- break;
-
- case P_STD_SDCC89:
- options.std_c99 = 0;
- options.std_sdcc = 1;
- break;
-
- case P_STD_SDCC99:
- options.std_c99 = 1;
- options.std_sdcc = 1;
- break;
-
- case P_CODESEG:
- {
- char str[9];
- char *segname = Safe_malloc(15);
- sscanf(cp, " %8s", str);
- str[8] = '\0';
- sprintf(segname, "%-8.8s(CODE)", str);
- options.code_seg = segname;
- }
- break;
+ break;
- case P_CONSTSEG:
- {
- char str[9];
- char *segname = Safe_malloc(15);
- sscanf(cp, " %8s", str);
- str[8] = '\0';
- sprintf(segname, "%-8.8s(CODE)", str);
- options.const_seg = segname;
+ case P_NOIV:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ options.noiv = 1;
+ break;
+
+ case P_LOOPREV:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ optimize.noLoopReverse = 1;
+ break;
+
+ case P_OVERLAY_:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ break; /* notyet */
+
+ case P_DISABLEWARN:
+ {
+ int warn;
+
+ cp = get_pragma_token(cp, &token);
+
+ if (token.type != TOKEN_INT)
+ {
+ err = 1;
+ break;
+ }
+ warn = token.val.int_val;
+
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ if (warn < MAX_ERROR_WARNING)
+ setWarningDisabled(warn);
+ }
+ break;
+
+ case P_OPTCODESPEED:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ optimize.codeSpeed = 1;
+ optimize.codeSize = 0;
+ break;
+
+ case P_OPTCODESIZE:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ optimize.codeSpeed = 0;
+ optimize.codeSize = 1;
+ break;
+
+ case P_OPTCODEBALANCED:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ optimize.codeSpeed = 0;
+ optimize.codeSize = 0;
+ break;
+
+ case P_STD_C89:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ options.std_c99 = 0;
+ options.std_sdcc = 0;
+ break;
+
+ case P_STD_C99:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ options.std_c99 = 1;
+ options.std_sdcc = 0;
+ break;
+
+ case P_STD_SDCC89:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ options.std_c99 = 0;
+ options.std_sdcc = 1;
+ break;
+
+ case P_STD_SDCC99:
+ cp = get_pragma_token(cp, &token);
+ if (TOKEN_EOL != token.type)
+ {
+ err = 1;
+ break;
+ }
+
+ options.std_c99 = 1;
+ options.std_sdcc = 1;
+ break;
+
+ case P_CODESEG:
+ {
+ const char *segname;
+
+ cp = get_pragma_token(cp, &token);
+ if (token.type == TOKEN_EOL)
+ {
+ err = 1;
+ break;
+ }
+ segname = get_pragma_string(&token);
+
+ cp = get_pragma_token(cp, &token);
+ if (token.type != TOKEN_EOL)
+ {
+ err = 1;
+ break;
+ }
+
+ if (strlen(segname) > 8)
+ {
+ err = 1;
+ break;
+ }
+ else
+ {
+ dbuf_append(&token.dbuf, "(CODE)", (sizeof "(CODE)") - 1);
+ options.code_seg = Safe_strdup(get_pragma_string(&token));
+ }
+ }
+ break;
+
+ case P_CONSTSEG:
+ {
+ const char *segname;
+
+ cp = get_pragma_token(cp, &token);
+ if (token.type == TOKEN_EOL)
+ {
+ err = 1;
+ break;
+ }
+ segname = get_pragma_string(&token);
+
+ cp = get_pragma_token(cp, &token);
+ if (token.type != TOKEN_EOL)
+ {
+ err = 1;
+ break;
+ }
+
+ if (strlen(segname) > 8)
+ {
+ err = 1;
+ break;
+ }
+ else
+ {
+ dbuf_append(&token.dbuf, "(CODE)", (sizeof "(CODE)") - 1);
+ options.code_seg = Safe_strdup(get_pragma_string(&token));
+ }
+ }
+ break;
+
+ default:
+ processed = 0;
+ break;
}
- break;
- }
+
+ get_pragma_token(cp, &token);
+
+ if (1 == err || (0 == err && token.type != TOKEN_EOL))
+ werror(W_BAD_PRAGMA_ARGUMENTS, name);
+
+ free_pragma_token(&token);
+ return processed;
}
-static int process_pragma(char *s)
-{
-#define NELEM(x) (sizeof (x) / sizeof (x)[0])
-#define PRAGMA_STR "#pragma"
-#define PRAGMA_LEN ((sizeof PRAGMA_STR) - 1)
+static struct pragma_s pragma_tbl[] = {
+ { "save", P_SAVE, 0, doPragma },
+ { "restore", P_RESTORE, 0, doPragma },
+ { "noinduction", P_NOINDUCTION, 0, doPragma },
+ { "noinvariant", P_NOINVARIANT, 0, doPragma },
+ { "noloopreverse", P_LOOPREV, 0, doPragma },
+ { "induction", P_INDUCTION, 0, doPragma },
+ { "stackauto", P_STACKAUTO, 0, doPragma },
+ { "nojtbound", P_NOJTBOUND, 0, doPragma },
+ { "nogcse", P_NOGCSE, 0, doPragma },
+ { "nooverlay", P_NOOVERLAY, 0, doPragma },
+ { "callee_saves", P_CALLEE_SAVES, 0, doPragma },
+ { "exclude", P_EXCLUDE, 0, doPragma },
+ { "noiv", P_NOIV, 0, doPragma },
+ { "overlay", P_OVERLAY_, 0, doPragma },
+ { "less_pedantic", P_LESSPEDANTIC, 0, doPragma },
+ { "disable_warning",P_DISABLEWARN, 0, doPragma },
+ { "opt_code_speed", P_OPTCODESPEED, 0, doPragma },
+ { "opt_code_size", P_OPTCODESIZE, 0, doPragma },
+ { "opt_code_balanced", P_OPTCODEBALANCED, 0, doPragma },
+ { "std_c89", P_STD_C89, 0, doPragma },
+ { "std_c99", P_STD_C99, 0, doPragma },
+ { "std_sdcc89", P_STD_SDCC89, 0, doPragma },
+ { "std_sdcc99", P_STD_SDCC99, 0, doPragma },
+ { "codeseg", P_CODESEG, 0, doPragma },
+ { "constseg", P_CONSTSEG, 0, doPragma },
+ { NULL, 0, 0, NULL },
+};
- static struct pragma_s
- {
- const char *name;
- enum pragma_id id;
- char deprecated;
- } pragma_tbl[] = {
- { "save", P_SAVE, 0 },
- { "restore", P_RESTORE, 0 },
- { "noinduction", P_NOINDUCTION, 0 },
- { "noinvariant", P_NOINVARIANT, 0 },
- { "noloopreverse", P_LOOPREV, 0 },
- { "induction", P_INDUCTION, 0 },
- { "stackauto", P_STACKAUTO, 0 },
- { "nojtbound", P_NOJTBOUND, 0 },
- { "nogcse", P_NOGCSE, 0 },
- { "nooverlay", P_NOOVERLAY, 0 },
- { "callee_saves", P_CALLEE_SAVES, 0 },
- { "exclude", P_EXCLUDE, 0 },
- { "noiv", P_NOIV, 0 },
- { "overlay", P_OVERLAY_, 0 },
- { "less_pedantic", P_LESSPEDANTIC, 0 },
- { "disable_warning",P_DISABLEWARN, 0 },
- { "opt_code_speed", P_OPTCODESPEED, 0 },
- { "opt_code_size", P_OPTCODESIZE, 0 },
- { "opt_code_balanced", P_OPTCODEBALANCED, 0 },
- { "std_c89", P_STD_C89, 0 },
- { "std_c99", P_STD_C99, 0 },
- { "std_sdcc89", P_STD_SDCC89, 0 },
- { "std_sdcc99", P_STD_SDCC99, 0 },
- { "codeseg", P_CODESEG, 0 },
- { "constseg", P_CONSTSEG, 0 },
-
- /*
- * The following lines are deprecated pragmas,
- * only for bacward compatibility.
- * They should be removed in next major release after 1.4.0
- */
-
- { "SAVE", P_SAVE, 1 },
- { "RESTORE", P_RESTORE, 1 },
- { "NOINDUCTION", P_NOINDUCTION, 1 },
- { "NOINVARIANT", P_NOINVARIANT, 1 },
- { "NOLOOPREVERSE", P_LOOPREV, 1 },
- { "INDUCTION", P_INDUCTION, 1 },
- { "STACKAUTO", P_STACKAUTO, 1 },
- { "NOJTBOUND", P_NOJTBOUND, 1 },
- { "NOGCSE", P_NOGCSE, 1 },
- { "NOOVERLAY", P_NOOVERLAY, 1 },
- { "CALLEE-SAVES", P_CALLEE_SAVES, 1 },
- { "EXCLUDE", P_EXCLUDE, 1 },
- { "NOIV", P_NOIV, 1 },
- { "OVERLAY", P_OVERLAY_, 1 },
- { "LESS_PEDANTIC", P_LESSPEDANTIC, 1 },
- };
- char *cp;
+/*
+ * returns 1 if the pragma was processed, 0 if not
+ */
+int
+process_pragma_tbl(const struct pragma_s *pragma_tbl, const char *s)
+{
+ struct pragma_token_s token;
int i;
+ int ret = 0;
- /* find the pragma */
- while (strncmp(s, PRAGMA_STR, PRAGMA_LEN))
- s++;
- s += PRAGMA_LEN;
-
- /* look for the directive */
- while(isspace((unsigned char)*s))
- s++;
+ init_pragma_token(&token);
- cp = s;
- /* look for the end of the directive */
- while ((!isspace((unsigned char)*s)) && (*s != '\n'))
- s++ ;
+ s = get_pragma_token(s, &token);
/* skip separating whitespace */
- while (isspace((unsigned char)*s) && (*s != '\n'))
+ while ('\n' != *s && isspace((unsigned char)*s))
s++;
- /* First give the port a chance */
- if (port->process_pragma && !port->process_pragma(cp))
- return 0;
-
- for (i = 0; i < NELEM(pragma_tbl); i++)
+ for (i = 0; NULL != pragma_tbl[i].name; ++i)
{
/* now compare and do what needs to be done */
- size_t len = strlen(pragma_tbl[i].name);
-
- if (strncmp(cp, pragma_tbl[i].name, len) == 0)
+ if (strcmp(get_pragma_string(&token), pragma_tbl[i].name) == 0)
{
if (pragma_tbl[i].deprecated != 0)
werror(W_DEPRECATED_PRAGMA, pragma_tbl[i].name);
- doPragma(pragma_tbl[i].id, s);
- return 0;
+ ret = (*pragma_tbl[i].func)(pragma_tbl[i].id, pragma_tbl[i].name, s);
+ break;
}
}
- werror(W_UNKNOWN_PRAGMA, cp);
- return 0;
+ free_pragma_token(&token);
+ return ret;
+}
+
+static int process_pragma(const char *s)
+{
+ struct pragma_token_s token;
+
+ init_pragma_token(&token);
+
+ s = get_pragma_token(s, &token);
+ if (0 != strcmp("#pragma", get_pragma_string(&token)))
+ {
+ /* Oops, womething went totally wrong - internal error */
+ }
+
+ /* skip spaces */
+ while ('\n' != *s && isspace((unsigned char)*s))
+ ++s;
+
+ /* First give the port a chance */
+ if (port->process_pragma && port->process_pragma(s))
+ return 1;
+
+ if (process_pragma_tbl(pragma_tbl, s))
+ {
+ return 1;
+ }
+ else
+ {
+ werror(W_UNKNOWN_PRAGMA, s);
+ return 0;
+ }
}
/* will return 1 if the string is a part
if (port->keywords == NULL)
return 0;
-
+
if (s[0] == '_' && s[1] == '_')
{
/* Keywords in the port's array have either 0 or 1 underscore, */
{
fflush(stdout);
- if (mylineno && filename) {
- if(options.vc_err_style)
- fprintf(stderr, "\n%s(%d) : %s: token -> '%s' ; column %d\n",
- filename, mylineno, s, yytext, column);
- else
- fprintf(stderr, "\n%s:%d: %s: token -> '%s' ; column %d\n",
- filename, mylineno, s ,yytext, column);
- fatalError++;
- } else {
- /* this comes from an empy file, no problem */
- }
+ if(options.vc_err_style)
+ fprintf(stderr, "\n%s(%d) : %s: token -> '%s' ; column %d\n",
+ filename, mylineno, s, yytext, column);
+ else
+ fprintf(stderr, "\n%s:%d: %s: token -> '%s' ; column %d\n",
+ filename, mylineno, s ,yytext, column);
+ fatalError++;
+
return 0;
}
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