/* Incremented for each %left, %right or %nonassoc seen */
static int lastprec;
-/* Incremented for each generated symbol */
-static int gensym_count;
-
static bucket *errtoken;
static bucket *undeftoken;
\f
else if (isdigit (c) || c == '-')
{
int n;
- char buf[4096];
ungetc (c, fin);
n = read_signed_integer (fin);
symbol_list *rule, int stack_offset)
{
int c = getc (fin);
- char *type_name = NULL;
+ const char *type_name = NULL;
/* Get the type name if explicit. */
if (c == '<')
static void
parse_token_decl (symbol_class what_is, symbol_class what_is_not)
{
- int token = 0;
+ token_t token = 0;
char *typename = 0;
/* The symbol being defined. */
fatal (_("Premature EOF after %s"), token_buffer);
token = lex ();
- if (token == COMMA)
+ if (token == tok_comma)
{
symbol = NULL;
continue;
}
- if (token == TYPENAME)
+ if (token == tok_typename)
{
typename = xstrdup (token_buffer);
value_components_used = 1;
symbol = NULL;
}
- else if (token == IDENTIFIER && *symval->tag == '\"' && symbol)
+ else if (token == tok_identifier && *symval->tag == '\"' && symbol)
{
if (symval->alias)
warn (_("symbol `%s' used more than once as a literal string"),
translations = 1;
symbol = NULL;
}
- else if (token == IDENTIFIER)
+ else if (token == tok_identifier)
{
int oldclass = symval->class;
symbol = symval;
complain (_("type redeclaration for %s"), symbol->tag);
}
}
- else if (symbol && token == NUMBER)
+ else if (symbol && token == tok_number)
{
symbol->user_token_number = numval;
translations = 1;
{
if (start_flag)
complain (_("multiple %s declarations"), "%start");
- if (lex () != IDENTIFIER)
+ if (lex () != tok_identifier)
complain (_("invalid %s declaration"), "%start");
else
{
{
char *name;
- if (lex () != TYPENAME)
+ if (lex () != tok_typename)
{
complain ("%s", _("%type declaration has no <typename>"));
skip_to_char ('%');
for (;;)
{
- int t;
+ token_t t;
int tmp_char = ungetc (skip_white_space (), finput);
if (tmp_char == '%')
switch (t)
{
- case COMMA:
- case SEMICOLON:
+ case tok_comma:
+ case tok_semicolon:
break;
- case IDENTIFIER:
+ case tok_identifier:
if (symval->type_name == NULL)
symval->type_name = name;
else if (strcmp (name, symval->type_name) != 0)
for (;;)
{
- int t;
+ token_t t;
int tmp_char = ungetc (skip_white_space (), finput);
if (tmp_char == '%')
switch (t)
{
- case TYPENAME:
+ case tok_typename:
name = xstrdup (token_buffer);
break;
- case COMMA:
+ case tok_comma:
break;
- case IDENTIFIER:
+ case tok_identifier:
if (symval->prec != 0)
complain (_("redefining precedence of %s"), symval->tag);
symval->prec = lastprec;
}
break;
- case NUMBER:
- if (prev == IDENTIFIER)
+ case tok_number:
+ if (prev == tok_identifier)
{
symval->user_token_number = numval;
translations = 1;
}
break;
- case SEMICOLON:
+ case tok_semicolon:
return;
default:
static void
parse_thong_decl (void)
{
- int token;
+ token_t token;
struct bucket *symbol;
char *typename = 0;
int usrtoknum;
translations = 1;
token = lex (); /* fetch typename or first token */
- if (token == TYPENAME)
+ if (token == tok_typename)
{
typename = xstrdup (token_buffer);
value_components_used = 1;
/* process first token */
- if (token != IDENTIFIER)
+ if (token != tok_identifier)
{
complain (_("unrecognized item %s, expected an identifier"),
token_buffer);
token = lex (); /* get number or literal string */
- if (token == NUMBER)
+ if (token == tok_number)
{
usrtoknum = numval;
token = lex (); /* okay, did number, now get literal */
/* process literal string token */
- if (token != IDENTIFIER || *symval->tag != '\"')
+ if (token != tok_identifier || *symval->tag != '\"')
{
complain (_("expected string constant instead of %s"), token_buffer);
skip_to_char ('%');
nsyms--;
}
+/*------------------------------------------.
+| Parse what comes after %header_extension. |
+`------------------------------------------*/
+
+static void
+parse_header_extension_decl (void)
+{
+ char buff[32];
+
+ if (header_extension)
+ complain (_("multiple %%header_extension declarations"));
+ fscanf (finput, "%s", buff);
+ header_extension = xstrdup (buff);
+}
+
+/*------------------------------------------.
+| Parse what comes after %source_extension. |
+`------------------------------------------*/
+
+static void
+parse_source_extension_decl (void)
+{
+ char buff[32];
+
+ if (src_extension)
+ complain (_("multiple %%source_extension declarations"));
+ fscanf (finput, "%s", buff);
+ src_extension = xstrdup (buff);
+}
/*----------------------------------------------------------------.
| Read from finput until `%%' is seen. Discard the `%%'. Handle |
switch (tok)
{
- case TWO_PERCENTS:
+ case tok_two_percents:
return;
- case PERCENT_LEFT_CURLY:
+ case tok_percent_left_curly:
copy_definition ();
break;
- case TOKEN:
+ case tok_token:
parse_token_decl (token_sym, nterm_sym);
break;
- case NTERM:
+ case tok_nterm:
parse_token_decl (nterm_sym, token_sym);
break;
- case TYPE:
+ case tok_type:
parse_type_decl ();
break;
- case START:
+ case tok_start:
parse_start_decl ();
break;
- case UNION:
+ case tok_union:
parse_union_decl ();
break;
- case EXPECT:
+ case tok_expect:
parse_expect_decl ();
break;
- case THONG:
+
+ case tok_thong:
parse_thong_decl ();
break;
- case LEFT:
+ case tok_left:
parse_assoc_decl (left_assoc);
break;
- case RIGHT:
+ case tok_right:
parse_assoc_decl (right_assoc);
break;
- case NONASSOC:
+ case tok_nonassoc:
parse_assoc_decl (non_assoc);
break;
- case SEMANTIC_PARSER:
- semantic_parser = 1;
+ case tok_hdrext:
+ parse_header_extension_decl ();
break;
- case PURE_PARSER:
- pure_parser = 1;
+ case tok_srcext:
+ parse_source_extension_decl ();
break;
- case NOOP:
+ case tok_noop:
break;
default:
static bucket *
gensym (void)
{
+ /* Incremented for each generated symbol */
+ static int gensym_count = 0;
+ static char buf[256];
+
bucket *sym;
- sprintf (token_buffer, "@%d", ++gensym_count);
+ sprintf (buf, "@%d", ++gensym_count);
+ token_buffer = buf;
sym = getsym (token_buffer);
sym->class = nterm_sym;
sym->value = nvars++;
get_type (void)
{
int k;
- int t;
+ token_t token;
char *name;
- t = lex ();
+ token = lex ();
- if (t != TYPENAME)
+ if (token != tok_typename)
{
complain (_("invalid %s declaration"), "%type");
return t;
for (;;)
{
- t = lex ();
+ token = lex ();
- switch (t)
+ switch (token)
{
- case SEMICOLON:
+ case tok_semicolon:
return lex ();
- case COMMA:
+ case tok_comma:
break;
- case IDENTIFIER:
+ case tok_identifier:
if (symval->type_name == NULL)
symval->type_name = name;
else if (strcmp (name, symval->type_name) != 0)
break;
default:
- return t;
+ return token;
}
}
}
static void
readgram (void)
{
- int t;
+ token_t t;
bucket *lhs = NULL;
symbol_list *p;
symbol_list *p1;
t = lex ();
- while (t != TWO_PERCENTS && t != ENDFILE)
+ while (t != tok_two_percents && t != tok_eof)
{
- if (t == IDENTIFIER || t == BAR)
+ if (t == tok_identifier || t == tok_bar)
{
int action_flag = 0;
/* Number of symbols in rhs of this rule so far */
int xactions = 0; /* JF for error checking */
bucket *first_rhs = 0;
- if (t == IDENTIFIER)
+ if (t == tok_identifier)
{
lhs = symval;
}
t = lex ();
- if (t != COLON)
+ if (t != tok_colon)
{
complain (_("ill-formed rule: initial symbol not followed by colon"));
unlex (t);
}
}
- if (nrules == 0 && t == BAR)
+ if (nrules == 0 && t == tok_bar)
{
complain (_("grammar starts with vertical bar"));
lhs = symval; /* BOGUS: use a random symval */
for (;;)
{
t = lex ();
- if (t == PREC)
+ if (t == tok_prec)
{
t = lex ();
crule->ruleprec = symval;
t = lex ();
}
- if (!(t == IDENTIFIER || t == LEFT_CURLY))
+ if (!(t == tok_identifier || t == tok_left_curly))
break;
/* If next token is an identifier, see if a colon follows it.
If one does, exit this rule now. */
- if (t == IDENTIFIER)
+ if (t == tok_identifier)
{
bucket *ssave;
- int t1;
+ token_t t1;
ssave = symval;
t1 = lex ();
unlex (t1);
symval = ssave;
- if (t1 == COLON)
+ if (t1 == tok_colon)
break;
if (!first_rhs) /* JF */
action_flag = 0;
}
- if (t == IDENTIFIER)
+ if (t == tok_identifier)
{
nitems++;
p = XCALLOC (symbol_list, 1);
p1->next = p;
p1 = p;
- if (t == PREC)
+ if (t == tok_prec)
{
complain (_("two @prec's in a row"));
t = lex ();
crule->ruleprec = symval;
t = lex ();
}
- if (t == GUARD)
+ if (t == tok_guard)
{
if (!semantic_parser)
complain (_("%%guard present but %%semantic_parser not specified"));
copy_guard (crule, rulelength);
t = lex ();
}
- else if (t == LEFT_CURLY)
+ else if (t == tok_left_curly)
{
/* This case never occurs -wjh */
if (action_flag)
/* Warn if there is no default for $$ but we need one. */
else if (!xactions && !first_rhs && lhs->type_name != 0)
complain (_("empty rule for typed nonterminal, and no action"));
- if (t == SEMICOLON)
+ if (t == tok_semicolon)
t = lex ();
}
#if 0
b) most of them scan forward until finding a next %
thus they may swallow lots of intervening rules
*/
- else if (t == TOKEN)
+ else if (t == tok_token)
{
parse_token_decl (token_sym, nterm_sym);
t = lex ();
}
- else if (t == NTERM)
+ else if (t == tok_nterm)
{
parse_token_decl (nterm_sym, token_sym);
t = lex ();
}
- else if (t == TYPE)
+ else if (t == tok_type)
{
t = get_type ();
}
- else if (t == UNION)
+ else if (t == tok_union)
{
parse_union_decl ();
t = lex ();
}
- else if (t == EXPECT)
+ else if (t == tok_expect)
{
parse_expect_decl ();
t = lex ();
}
- else if (t == START)
+ else if (t == tok_start)
{
parse_start_decl ();
t = lex ();
else
{
- complain (_("invalid input: %s"), token_buffer);
+ complain (_("invalid input: %s"), quote (token_buffer));
t = lex ();
}
}
"#ifndef YYSTYPE\n#define YYSTYPE int\n#endif\n");
if (defines_flag)
obstack_sgrow (&defines_obstack, "\
-#ifndef YYSTYPE\n\
-# define YYSTYPE int\n\
-#endif\n");
+# ifndef YYSTYPE\n\
+# define YYSTYPE int\n\
+# endif\n");
}
/* Report any undefined symbols and consider them nonterminals. */
if (c != '\0')
continue;
- obstack_fgrow2 (oout, "#define\t%s\t%d\n",
+ obstack_fgrow2 (oout, "# define\t%s\t%d\n",
symbol,
- ((translations && !raw_flag)
- ? bp->user_token_number : bp->value));
+ (translations ? bp->user_token_number : bp->value));
if (semantic_parser)
- obstack_fgrow2 (oout, "#define\tT%s\t%d\n", symbol, bp->value);
+ obstack_fgrow2 (oout, "# define\tT%s\t%d\n", symbol, bp->value);
}
obstack_1grow (oout, '\n');
/* don't make these for dummy nonterminals made by gensym. */
if (*tags[i] != '@')
obstack_fgrow2 (&defines_obstack,
- "#define\tNT%s\t%d\n", tags[i], i);
+ "# define\tNT%s\t%d\n", tags[i], i);
}
#if 0
/* `fdefines' is now a temporary file, so we need to copy its
typed = 0;
lastprec = 0;
- gensym_count = 0;
-
semantic_parser = 0;
pure_parser = 0;
projects / bison.git / blobdiff