/* -*- indented-text -*- */
/* Process source files and output type information.
- Copyright (C) 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
#include "gengtype.h"
#include "gengtype-yacc.h"
-#undef YY_USE_PROTOS
-#define YY_DECL int yylex ()
+#define YY_INPUT(BUF,RESULT,SIZE) ((RESULT) = macro_input (BUF,SIZE))
-static void update_lineno PARAMS ((const char *l, size_t len));
+static unsigned macro_input (char *buffer, unsigned);
+static void push_macro_expansion (const char *, unsigned,
+ const char *, unsigned);
+static void update_lineno (const char *l, size_t len);
struct fileloc lexer_line;
int lexer_toplevel_done;
static void
-update_lineno (l, len)
- const char *l;
- size_t len;
+update_lineno (const char *l, size_t len)
{
while (len-- > 0)
if (*l++ == '\n')
ID [[:alpha:]_][[:alnum:]_]*
WS [[:space:]]+
-IWORD short|long|(un)?signed|char|int|HOST_WIDE_INT|bool|size_t|CHAR_BITFIELD
+IWORD short|long|(un)?signed|char|int|HOST_WIDE_INT|HOST_WIDEST_INT|bool|size_t|BOOL_BITFIELD
ITYPE {IWORD}({WS}{IWORD})*
%x in_struct in_struct_comment in_comment in_yacc_escape
is_pointer = 1;
for (namelen = 1; ISIDNUM (namestart[namelen]); namelen++)
;
- t = find_structure (xmemdup (tagstart, taglen, taglen+1), union_p);
+ t = find_structure ((const char *) xmemdup (tagstart, taglen, taglen+1),
+ union_p);
if (is_pointer)
t = create_pointer (t);
- do_typedef (xmemdup (namestart, namelen, namelen+1), t, &lexer_line);
+ namestart = (char *) xmemdup (namestart, namelen, namelen+1);
+#ifdef USE_MAPPED_LOCATION
+ /* temporary kludge - gentype doesn't handle cpp conditionals */
+ if (strcmp (namestart, "location_t") != 0
+ && strcmp (namestart, "expanded_location") != 0)
+#endif
+ do_typedef (namestart, t, &lexer_line);
update_lineno (yytext, yyleng);
}
ISSPACE(*typestart);
typestart++)
;
- for (typelen = namestart - typestart;
- ISSPACE(typestart[typelen-1]);
+ for (typelen = namestart - typestart;
+ ISSPACE (typestart[typelen-1]);
typelen--)
;
t = create_scalar_type (typestart, typelen);
- do_typedef (xmemdup (namestart, namelen, namelen+1), t, &lexer_line);
+ do_typedef ((const char *) xmemdup (namestart, namelen, namelen+1), t,
+ &lexer_line);
update_lineno (yytext, yyleng);
}
namestart -= namelen - 1;
t = create_scalar_type ("function type", sizeof ("function type")-1);
- do_typedef (xmemdup (namestart, namelen, namelen+1), t, &lexer_line);
+ do_typedef ((const char *) xmemdup (namestart, namelen, namelen+1), t,
+ &lexer_line);
update_lineno (yytext, yyleng);
}
-[^[:alnum:]_]typedef{WS}{ID}{WS}?"("{WS}?"*"{WS}?{ID}{WS}?")"{WS}?PARAMS {
+
+[^[:alnum:]_]typedef{WS}{ID}{WS}{ID}{WS}"(" {
+ char *namestart;
+ size_t namelen;
+ struct type *t;
+
+ for (namestart = yytext + yyleng - 2; ISSPACE (*namestart); namestart--)
+ ;
+ for (namelen = 1; !ISSPACE (namestart[-namelen]); namelen++)
+ ;
+ namestart -= namelen - 1;
+
+ t = create_scalar_type ("function type", sizeof ("function type")-1);
+ do_typedef ((const char *) xmemdup (namestart, namelen, namelen+1), t,
+ &lexer_line);
+ update_lineno (yytext, yyleng);
+}
+
+[^[:alnum:]_]typedef{WS}{ID}{WS}?"*"?{WS}?"("{WS}?"*"{WS}?{ID}{WS}?")"{WS}?PARAMS {
char *namestart;
size_t namelen;
struct type *t;
namestart -= namelen - 1;
t = create_scalar_type ("function type", sizeof ("function type")-1);
- do_typedef (xmemdup (namestart, namelen, namelen+1), t, &lexer_line);
+ do_typedef ((const char *) xmemdup (namestart, namelen, namelen+1), t,
+ &lexer_line);
+ update_lineno (yytext, yyleng);
+}
+
+[^[:alnum:]_]typedef{WS}{ID}{WS}?"*"?{WS}?"("{WS}?"*"{WS}?{ID}{WS}?")"{WS}?"(" {
+ char *namestart;
+ size_t namelen;
+ struct type *t;
+
+ for (namestart = yytext + yyleng - 2; !ISIDNUM (*namestart); namestart--)
+ ;
+ for (namelen = 1; ISIDNUM (namestart[-namelen]); namelen++)
+ ;
+ namestart -= namelen - 1;
+
+ t = create_scalar_type ("function type", sizeof ("function type")-1);
+ do_typedef ((const char *) xmemdup (namestart, namelen, namelen+1), t,
+ &lexer_line);
update_lineno (yytext, yyleng);
}
for (taglen = 1; ISIDNUM (tagstart[taglen]); taglen++)
;
- yylval.t = find_structure (xmemdup (tagstart, taglen, taglen + 1), union_p);
+ yylval.t = find_structure ((const char *) xmemdup (tagstart, taglen,
+ taglen + 1),
+ union_p);
BEGIN(in_struct);
update_lineno (yytext, yyleng);
return typedef_p ? ENT_TYPEDEF_STRUCT : ENT_STRUCT;
return ENT_YACCUNION;
}
+^"DEF_VEC_"[[:alnum:]_]*{WS}?"("{WS}?{ID}{WS}?")" {
+ char *macro, *arg;
+ unsigned macro_len, arg_len;
+ char *ptr = yytext;
+ type_p t;
+
+ /* Locate the macro and argument strings. */
+ macro = ptr;
+ while (*ptr != '(' && !ISSPACE (*ptr))
+ ptr++;
+ macro_len = ptr - macro;
+ while (*ptr == '(' || ISSPACE (*ptr))
+ ptr++;
+ arg = ptr;
+ while (*ptr != ')' && !ISSPACE (*ptr))
+ ptr++;
+ arg_len = ptr - arg;
+
+ /* Push the macro for later expansion. */
+ push_macro_expansion (macro, macro_len, arg, arg_len);
+
+ /* Create the struct and typedef. */
+ ptr = (char *) xmemdup ("VEC_", 4, 4 + arg_len + 1);
+ memcpy (&ptr[4], arg, arg_len);
+ ptr[4 + arg_len] = 0;
+ t = find_structure (ptr, 0);
+ do_typedef (ptr, t, &lexer_line);
+}
+
<in_struct>{
"/*" { BEGIN(in_struct_comment); }
^"%{" { BEGIN(in_yacc_escape); }
+^"@@".* /* Used for c-parse.in C/ObjC demarcation. */
+
{WS} { update_lineno (yytext, yyleng); }
"const"/[^[:alnum:]_] /* don't care */
-
"GTY"/[^[:alnum:]_] { return GTY_TOKEN; }
"union"/[^[:alnum:]_] { return UNION; }
"struct"/[^[:alnum:]_] { return STRUCT; }
"enum"/[^[:alnum:]_] { return ENUM; }
"ptr_alias"/[^[:alnum:]_] { return ALIAS; }
+"nested_ptr"/[^[:alnum:]_] { return NESTED_PTR; }
[0-9]+ { return NUM; }
-"param"[0-9]*"_is"/[^[:alnum:]_] {
- yylval.s = xmemdup (yytext, yyleng, yyleng+1);
+"param"[0-9]*"_is"/[^[:alnum:]_] {
+ yylval.s = (const char *) xmemdup (yytext, yyleng, yyleng+1);
return PARAM_IS;
}
return SCALAR;
}
+"VEC"{WS}?"("{WS}?{ID}{WS}?")" {
+ char *macro, *arg;
+ unsigned macro_len, arg_len;
+ char *ptr = yytext;
+
+ macro = ptr;
+ while (*ptr != '(' && !ISSPACE (*ptr))
+ ptr++;
+ macro_len = ptr - macro;
+ while (*ptr == '(' || ISSPACE (*ptr))
+ ptr++;
+ arg = ptr;
+ while (*ptr != ')' && !ISSPACE (*ptr))
+ ptr++;
+ arg_len = ptr - arg;
+ ptr = (char *) xmemdup (macro, macro_len, macro_len + arg_len + 2);
+ ptr[macro_len] = '_';
+ memcpy (&ptr[macro_len+1], arg, arg_len);
+ yylval.s = ptr;
+ return ID;
+}
+
{ID}/[^[:alnum:]_] {
- yylval.s = xmemdup (yytext, yyleng, yyleng+1);
+ yylval.s = (const char *) xmemdup (yytext, yyleng, yyleng+1);
return ID;
}
\"([^"\\]|\\.)*\" {
- yylval.s = xmemdup (yytext+1, yyleng-2, yyleng-1);
+ yylval.s = (const char *) xmemdup (yytext+1, yyleng-2, yyleng-1);
return STRING;
}
"["[^\[\]]*"]" {
- yylval.s = xmemdup (yytext+1, yyleng-2, yyleng-1);
+ yylval.s = (const char *) xmemdup (yytext+1, yyleng-2, yyleng-1);
return ARRAY;
}
^"%"{ID} {
- yylval.s = xmemdup (yytext+1, yyleng-1, yyleng);
+ yylval.s = (const char *) xmemdup (yytext+1, yyleng-1, yyleng);
return PERCENT_ID;
}
"'"("\\".|[^\\])"'" {
- yylval.s = xmemdup (yytext+1, yyleng-2, yyleng);
+ yylval.s = (const char *) xmemdup (yytext+1, yyleng-2, yyleng);
return CHAR;
}
"unterminated comment or string; unexpected EOF");
}
+^"#define"{WS}"GTY(" /* do nothing */
+{WS}"GTY"{WS}?"(" {
+ error_at_line (&lexer_line, "stray GTY marker");
+}
+
%%
+/* Deal with the expansion caused by the DEF_VEC_x macros. */
+
+typedef struct macro
+{
+ const char *name;
+ const char *expansion;
+ struct macro *next;
+} macro_t;
+
+static const macro_t macro_defs[] =
+{
+#define IN_GENGTYPE 1
+#include "vec.h"
+ {NULL, NULL, NULL}
+};
+
+/* Chain of macro expansions to do at end of scanning. */
+static macro_t *macro_expns;
+
+/* Push macro NAME (NAME_LEN) with argument ARG (ARG_LEN) onto the
+ expansion queue. We ensure NAME is known at this point. */
+
+static void
+push_macro_expansion (const char *name, unsigned name_len,
+ const char *arg, unsigned arg_len)
+{
+ unsigned ix;
+
+ for (ix = 0; macro_defs[ix].name; ix++)
+ if (strlen (macro_defs[ix].name) == name_len
+ && !memcmp (name, macro_defs[ix].name, name_len))
+ {
+ macro_t *expansion = XNEW (macro_t);
+
+ expansion->next = macro_expns;
+ expansion->name = (char *) xmemdup (arg, arg_len, arg_len+1);
+ expansion->expansion = macro_defs[ix].expansion;
+ macro_expns = expansion;
+ return;
+ }
+ error_at_line (&lexer_line, "unrecognized macro `%.*s(%.*s)'",
+ name_len, name, arg_len, arg);
+}
+
+/* Attempt to read some input. Use fread until we're at the end of
+ file. At end of file expand the next queued macro. We presume the
+ buffer is large enough for the entire expansion. */
+
+static unsigned
+macro_input (char *buffer, unsigned size)
+{
+ unsigned result;
+
+ result = fread (buffer, 1, size, yyin);
+ if (result)
+ /*NOP*/;
+ else if (ferror (yyin))
+ YY_FATAL_ERROR ("read of source file failed");
+ else if (macro_expns)
+ {
+ const char *expn;
+ unsigned len;
+
+ for (expn = macro_expns->expansion; *expn; expn++)
+ {
+ if (*expn == '#')
+ {
+ if (buffer[result-1] == ' ' && buffer[result-2] == '_')
+ result--;
+ len = strlen (macro_expns->name);
+ memcpy (&buffer[result], macro_expns->name, len);
+ result += len;
+ }
+ else
+ {
+ buffer[result++] = *expn;
+ if (*expn == ';' || *expn == '{')
+ buffer[result++] = '\n';
+ }
+ }
+ if (result > size)
+ YY_FATAL_ERROR ("buffer too small to expand macro");
+ macro_expns = macro_expns->next;
+ }
+ return result;
+}
+
void
-yyerror (s)
- const char *s;
+yyerror (const char *s)
{
error_at_line (&lexer_line, s);
}
void
-parse_file (fname)
- const char *fname;
+parse_file (const char *fname)
{
yyin = fopen (fname, "r");
lexer_line.file = fname;
OSDN Git Service
