X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fc-exp.y;h=5dd47fb6da8fcda57ecdc76df3fce1abed1c89ff;hb=072bba3b0f3e2ee8d2cfc94e256d0f0ebc627afc;hp=6318955b038a88ef8de90b7a944541130ce9d37f;hpb=348038cd50c18e4017d553abd4925a4c9b1ec9c7;p=deliverable%2Fbinutils-gdb.git
diff --git a/gdb/c-exp.y b/gdb/c-exp.y
index 6318955b03..5dd47fb6da 100644
--- a/gdb/c-exp.y
+++ b/gdb/c-exp.y
@@ -1,23 +1,22 @@
/* YACC parser for C expressions, for GDB.
Copyright (C) 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2003, 2004, 2006, 2007 Free Software Foundation, Inc.
+ 1998, 1999, 2000, 2003, 2004, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-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 of the License, or
-(at your option) any later version.
+ 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 3 of the License, 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.
+ 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, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see . */
/* Parse a C expression from text in a string,
and return the result as a struct expression pointer.
@@ -52,6 +51,11 @@ Boston, MA 02110-1301, USA. */
#include "charset.h"
#include "block.h"
#include "cp-support.h"
+#include "dfp.h"
+#include "gdb_assert.h"
+#include "macroscope.h"
+
+#define parse_type builtin_type (parse_gdbarch)
/* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
as well as gratuitiously global symbol names, so we can have multiple
@@ -61,7 +65,7 @@ Boston, MA 02110-1301, USA. */
generators need to be fixed instead of adding those names to this list. */
#define yymaxdepth c_maxdepth
-#define yyparse c_parse
+#define yyparse c_parse_internal
#define yylex c_lex
#define yyerror c_error
#define yylval c_lval
@@ -130,9 +134,14 @@ void yyerror (char *);
DOUBLEST dval;
struct type *type;
} typed_val_float;
+ struct {
+ gdb_byte val[16];
+ struct type *type;
+ } typed_val_decfloat;
struct symbol *sym;
struct type *tval;
struct stoken sval;
+ struct typed_stoken tsval;
struct ttype tsym;
struct symtoken ssym;
int voidval;
@@ -140,6 +149,7 @@ void yyerror (char *);
enum exp_opcode opcode;
struct internalvar *ivar;
+ struct stoken_vector svec;
struct type **tvec;
int *ivec;
}
@@ -162,6 +172,7 @@ static int parse_number (char *, int, int, YYSTYPE *);
%token INT
%token FLOAT
+%token DECFLOAT
/* Both NAME and TYPENAME tokens represent symbols in the input,
and both convey their data as strings.
@@ -171,10 +182,13 @@ static int parse_number (char *, int, int, YYSTYPE *);
Contexts where this distinction is not important can use the
nonterminal "name", which matches either NAME or TYPENAME. */
-%token STRING
+%token STRING
+%token CHAR
%token NAME /* BLOCKNAME defined below to give it higher precedence. */
+%token COMPLETE
%token TYPENAME
%type name
+%type string_exp
%type name_not_typename
%type typename
@@ -218,7 +232,7 @@ static int parse_number (char *, int, int, YYSTYPE *);
%left '+' '-'
%left '*' '/' '%'
%right UNARY INCREMENT DECREMENT
-%right ARROW '.' '[' '('
+%right ARROW ARROW_STAR '.' DOT_STAR '[' '('
%token BLOCKNAME
%token FILENAME
%type block
@@ -294,6 +308,23 @@ exp : exp ARROW name
write_exp_elt_opcode (STRUCTOP_PTR); }
;
+exp : exp ARROW name COMPLETE
+ { mark_struct_expression ();
+ write_exp_elt_opcode (STRUCTOP_PTR);
+ write_exp_string ($3);
+ write_exp_elt_opcode (STRUCTOP_PTR); }
+ ;
+
+exp : exp ARROW COMPLETE
+ { struct stoken s;
+ mark_struct_expression ();
+ write_exp_elt_opcode (STRUCTOP_PTR);
+ s.ptr = "";
+ s.length = 0;
+ write_exp_string (s);
+ write_exp_elt_opcode (STRUCTOP_PTR); }
+ ;
+
exp : exp ARROW qualified_name
{ /* exp->type::name becomes exp->*(&type::name) */
/* Note: this doesn't work if name is a
@@ -302,7 +333,7 @@ exp : exp ARROW qualified_name
write_exp_elt_opcode (STRUCTOP_MPTR); }
;
-exp : exp ARROW '*' exp
+exp : exp ARROW_STAR exp
{ write_exp_elt_opcode (STRUCTOP_MPTR); }
;
@@ -312,6 +343,23 @@ exp : exp '.' name
write_exp_elt_opcode (STRUCTOP_STRUCT); }
;
+exp : exp '.' name COMPLETE
+ { mark_struct_expression ();
+ write_exp_elt_opcode (STRUCTOP_STRUCT);
+ write_exp_string ($3);
+ write_exp_elt_opcode (STRUCTOP_STRUCT); }
+ ;
+
+exp : exp '.' COMPLETE
+ { struct stoken s;
+ mark_struct_expression ();
+ write_exp_elt_opcode (STRUCTOP_STRUCT);
+ s.ptr = "";
+ s.length = 0;
+ write_exp_string (s);
+ write_exp_elt_opcode (STRUCTOP_STRUCT); }
+ ;
+
exp : exp '.' qualified_name
{ /* exp.type::name becomes exp.*(&type::name) */
/* Note: this doesn't work if name is a
@@ -320,7 +368,7 @@ exp : exp '.' qualified_name
write_exp_elt_opcode (STRUCTOP_MEMBER); }
;
-exp : exp '.' '*' exp
+exp : exp DOT_STAR exp
{ write_exp_elt_opcode (STRUCTOP_MEMBER); }
;
@@ -353,6 +401,18 @@ arglist : arglist ',' exp %prec ABOVE_COMMA
{ arglist_len++; }
;
+exp : exp '(' nonempty_typelist ')' const_or_volatile
+ { int i;
+ write_exp_elt_opcode (TYPE_INSTANCE);
+ write_exp_elt_longcst ((LONGEST) $3[0]);
+ for (i = 0; i < $3[0]; ++i)
+ write_exp_elt_type ($3[i + 1]);
+ write_exp_elt_longcst((LONGEST) $3[0]);
+ write_exp_elt_opcode (TYPE_INSTANCE);
+ free ($3);
+ }
+ ;
+
rcurly : '}'
{ $$ = end_arglist () - 1; }
;
@@ -478,6 +538,15 @@ exp : INT
write_exp_elt_opcode (OP_LONG); }
;
+exp : CHAR
+ {
+ struct stoken_vector vec;
+ vec.len = 1;
+ vec.tokens = &$1;
+ write_exp_string_vector ($1.type, &vec);
+ }
+ ;
+
exp : NAME_OR_INT
{ YYSTYPE val;
parse_number ($1.stoken.ptr, $1.stoken.length, 0, &val);
@@ -496,6 +565,13 @@ exp : FLOAT
write_exp_elt_opcode (OP_DOUBLE); }
;
+exp : DECFLOAT
+ { write_exp_elt_opcode (OP_DECFLOAT);
+ write_exp_elt_type ($1.type);
+ write_exp_elt_decfloatcst ($1.val);
+ write_exp_elt_opcode (OP_DECFLOAT); }
+ ;
+
exp : variable
;
@@ -505,47 +581,92 @@ exp : VARIABLE
exp : SIZEOF '(' type ')' %prec UNARY
{ write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type (current_gdbarch)->builtin_int);
+ write_exp_elt_type (parse_type->builtin_int);
CHECK_TYPEDEF ($3);
write_exp_elt_longcst ((LONGEST) TYPE_LENGTH ($3));
write_exp_elt_opcode (OP_LONG); }
;
-exp : STRING
- { /* C strings are converted into array constants with
- an explicit null byte added at the end. Thus
- the array upper bound is the string length.
- There is no such thing in C as a completely empty
- string. */
- char *sp = $1.ptr; int count = $1.length;
- while (count-- > 0)
+string_exp:
+ STRING
+ {
+ /* We copy the string here, and not in the
+ lexer, to guarantee that we do not leak a
+ string. Note that we follow the
+ NUL-termination convention of the
+ lexer. */
+ struct typed_stoken *vec = XNEW (struct typed_stoken);
+ $$.len = 1;
+ $$.tokens = vec;
+
+ vec->type = $1.type;
+ vec->length = $1.length;
+ vec->ptr = malloc ($1.length + 1);
+ memcpy (vec->ptr, $1.ptr, $1.length + 1);
+ }
+
+ | string_exp STRING
+ {
+ /* Note that we NUL-terminate here, but just
+ for convenience. */
+ char *p;
+ ++$$.len;
+ $$.tokens = realloc ($$.tokens,
+ $$.len * sizeof (struct typed_stoken));
+
+ p = malloc ($2.length + 1);
+ memcpy (p, $2.ptr, $2.length + 1);
+
+ $$.tokens[$$.len - 1].type = $2.type;
+ $$.tokens[$$.len - 1].length = $2.length;
+ $$.tokens[$$.len - 1].ptr = p;
+ }
+ ;
+
+exp : string_exp
+ {
+ int i;
+ enum c_string_type type = C_STRING;
+
+ for (i = 0; i < $1.len; ++i)
{
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type (current_gdbarch)->builtin_char);
- write_exp_elt_longcst ((LONGEST)(*sp++));
- write_exp_elt_opcode (OP_LONG);
+ switch ($1.tokens[i].type)
+ {
+ case C_STRING:
+ break;
+ case C_WIDE_STRING:
+ case C_STRING_16:
+ case C_STRING_32:
+ if (type != C_STRING
+ && type != $1.tokens[i].type)
+ error ("Undefined string concatenation.");
+ type = $1.tokens[i].type;
+ break;
+ default:
+ /* internal error */
+ internal_error (__FILE__, __LINE__,
+ "unrecognized type in string concatenation");
+ }
}
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type (current_gdbarch)->builtin_char);
- write_exp_elt_longcst ((LONGEST)'\0');
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_opcode (OP_ARRAY);
- write_exp_elt_longcst ((LONGEST) 0);
- write_exp_elt_longcst ((LONGEST) ($1.length));
- write_exp_elt_opcode (OP_ARRAY); }
+
+ write_exp_string_vector (type, &$1);
+ for (i = 0; i < $1.len; ++i)
+ free ($1.tokens[i].ptr);
+ free ($1.tokens);
+ }
;
/* C++. */
exp : TRUEKEYWORD
{ write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type (current_gdbarch)->builtin_bool);
+ write_exp_elt_type (parse_type->builtin_bool);
write_exp_elt_longcst ((LONGEST) 1);
write_exp_elt_opcode (OP_LONG); }
;
exp : FALSEKEYWORD
{ write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type (current_gdbarch)->builtin_bool);
+ write_exp_elt_type (parse_type->builtin_bool);
write_exp_elt_longcst ((LONGEST) 0);
write_exp_elt_opcode (OP_LONG); }
;
@@ -569,8 +690,7 @@ block : BLOCKNAME
block : block COLONCOLON name
{ struct symbol *tem
= lookup_symbol (copy_name ($3), $1,
- VAR_DOMAIN, (int *) NULL,
- (struct symtab **) NULL);
+ VAR_DOMAIN, (int *) NULL);
if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK)
error ("No function \"%s\" in specified context.",
copy_name ($3));
@@ -580,8 +700,7 @@ block : block COLONCOLON name
variable: block COLONCOLON name
{ struct symbol *sym;
sym = lookup_symbol (copy_name ($3), $1,
- VAR_DOMAIN, (int *) NULL,
- (struct symtab **) NULL);
+ VAR_DOMAIN, (int *) NULL);
if (sym == 0)
error ("No symbol \"%s\" in specified context.",
copy_name ($3));
@@ -596,6 +715,7 @@ variable: block COLONCOLON name
qualified_name: typebase COLONCOLON name
{
struct type *type = $1;
+ CHECK_TYPEDEF (type);
if (TYPE_CODE (type) != TYPE_CODE_STRUCT
&& TYPE_CODE (type) != TYPE_CODE_UNION
&& TYPE_CODE (type) != TYPE_CODE_NAMESPACE)
@@ -611,6 +731,7 @@ qualified_name: typebase COLONCOLON name
{
struct type *type = $1;
struct stoken tmp_token;
+ CHECK_TYPEDEF (type);
if (TYPE_CODE (type) != TYPE_CODE_STRUCT
&& TYPE_CODE (type) != TYPE_CODE_UNION
&& TYPE_CODE (type) != TYPE_CODE_NAMESPACE)
@@ -641,8 +762,7 @@ variable: qualified_name
sym =
lookup_symbol (name, (const struct block *) NULL,
- VAR_DOMAIN, (int *) NULL,
- (struct symtab **) NULL);
+ VAR_DOMAIN, (int *) NULL);
if (sym)
{
write_exp_elt_opcode (OP_VAR_VALUE);
@@ -654,16 +774,11 @@ variable: qualified_name
msymbol = lookup_minimal_symbol (name, NULL, NULL);
if (msymbol != NULL)
- {
- write_exp_msymbol (msymbol,
- lookup_function_type (builtin_type (current_gdbarch)->builtin_int),
- builtin_type (current_gdbarch)->builtin_int);
- }
+ write_exp_msymbol (msymbol);
+ else if (!have_full_symbols () && !have_partial_symbols ())
+ error ("No symbol table is loaded. Use the \"file\" command.");
else
- if (!have_full_symbols () && !have_partial_symbols ())
- error ("No symbol table is loaded. Use the \"file\" command.");
- else
- error ("No symbol \"%s\" in current context.", name);
+ error ("No symbol \"%s\" in current context.", name);
}
;
@@ -674,9 +789,9 @@ variable: name_not_typename
{
if (symbol_read_needs_frame (sym))
{
- if (innermost_block == 0 ||
- contained_in (block_found,
- innermost_block))
+ if (innermost_block == 0
+ || contained_in (block_found,
+ innermost_block))
innermost_block = block_found;
}
@@ -693,8 +808,9 @@ variable: name_not_typename
/* C++: it hangs off of `this'. Must
not inadvertently convert from a method call
to data ref. */
- if (innermost_block == 0 ||
- contained_in (block_found, innermost_block))
+ if (innermost_block == 0
+ || contained_in (block_found,
+ innermost_block))
innermost_block = block_found;
write_exp_elt_opcode (OP_THIS);
write_exp_elt_opcode (OP_THIS);
@@ -710,11 +826,7 @@ variable: name_not_typename
msymbol =
lookup_minimal_symbol (arg, NULL, NULL);
if (msymbol != NULL)
- {
- write_exp_msymbol (msymbol,
- lookup_function_type (builtin_type (current_gdbarch)->builtin_int),
- builtin_type (current_gdbarch)->builtin_int);
- }
+ write_exp_msymbol (msymbol);
else if (!have_full_symbols () && !have_partial_symbols ())
error ("No symbol table is loaded. Use the \"file\" command.");
else
@@ -804,61 +916,61 @@ typebase /* Implements (approximately): (type-qualifier)* type-specifier */
: TYPENAME
{ $$ = $1.type; }
| INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_int; }
+ { $$ = parse_type->builtin_int; }
| LONG
- { $$ = builtin_type (current_gdbarch)->builtin_long; }
+ { $$ = parse_type->builtin_long; }
| SHORT
- { $$ = builtin_type (current_gdbarch)->builtin_short; }
+ { $$ = parse_type->builtin_short; }
| LONG INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_long; }
+ { $$ = parse_type->builtin_long; }
| LONG SIGNED_KEYWORD INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_long; }
+ { $$ = parse_type->builtin_long; }
| LONG SIGNED_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_long; }
+ { $$ = parse_type->builtin_long; }
| SIGNED_KEYWORD LONG INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_long; }
+ { $$ = parse_type->builtin_long; }
| UNSIGNED LONG INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_long; }
+ { $$ = parse_type->builtin_unsigned_long; }
| LONG UNSIGNED INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_long; }
+ { $$ = parse_type->builtin_unsigned_long; }
| LONG UNSIGNED
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_long; }
+ { $$ = parse_type->builtin_unsigned_long; }
| LONG LONG
- { $$ = builtin_type (current_gdbarch)->builtin_long_long; }
+ { $$ = parse_type->builtin_long_long; }
| LONG LONG INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_long_long; }
+ { $$ = parse_type->builtin_long_long; }
| LONG LONG SIGNED_KEYWORD INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_long_long; }
+ { $$ = parse_type->builtin_long_long; }
| LONG LONG SIGNED_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_long_long; }
+ { $$ = parse_type->builtin_long_long; }
| SIGNED_KEYWORD LONG LONG
- { $$ = builtin_type (current_gdbarch)->builtin_long_long; }
+ { $$ = parse_type->builtin_long_long; }
| SIGNED_KEYWORD LONG LONG INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_long_long; }
+ { $$ = parse_type->builtin_long_long; }
| UNSIGNED LONG LONG
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_long_long; }
+ { $$ = parse_type->builtin_unsigned_long_long; }
| UNSIGNED LONG LONG INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_long_long; }
+ { $$ = parse_type->builtin_unsigned_long_long; }
| LONG LONG UNSIGNED
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_long_long; }
+ { $$ = parse_type->builtin_unsigned_long_long; }
| LONG LONG UNSIGNED INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_long_long; }
+ { $$ = parse_type->builtin_unsigned_long_long; }
| SHORT INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_short; }
+ { $$ = parse_type->builtin_short; }
| SHORT SIGNED_KEYWORD INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_short; }
+ { $$ = parse_type->builtin_short; }
| SHORT SIGNED_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_short; }
+ { $$ = parse_type->builtin_short; }
| UNSIGNED SHORT INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_short; }
+ { $$ = parse_type->builtin_unsigned_short; }
| SHORT UNSIGNED
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_short; }
+ { $$ = parse_type->builtin_unsigned_short; }
| SHORT UNSIGNED INT_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_short; }
+ { $$ = parse_type->builtin_unsigned_short; }
| DOUBLE_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_double; }
+ { $$ = parse_type->builtin_double; }
| LONG DOUBLE_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_long_double; }
+ { $$ = parse_type->builtin_long_double; }
| STRUCT name
{ $$ = lookup_struct (copy_name ($2),
expression_context_block); }
@@ -872,13 +984,17 @@ typebase /* Implements (approximately): (type-qualifier)* type-specifier */
{ $$ = lookup_enum (copy_name ($2),
expression_context_block); }
| UNSIGNED typename
- { $$ = lookup_unsigned_typename (TYPE_NAME($2.type)); }
+ { $$ = lookup_unsigned_typename (parse_language,
+ parse_gdbarch,
+ TYPE_NAME($2.type)); }
| UNSIGNED
- { $$ = builtin_type (current_gdbarch)->builtin_unsigned_int; }
+ { $$ = parse_type->builtin_unsigned_int; }
| SIGNED_KEYWORD typename
- { $$ = lookup_signed_typename (TYPE_NAME($2.type)); }
+ { $$ = lookup_signed_typename (parse_language,
+ parse_gdbarch,
+ TYPE_NAME($2.type)); }
| SIGNED_KEYWORD
- { $$ = builtin_type (current_gdbarch)->builtin_int; }
+ { $$ = parse_type->builtin_int; }
/* It appears that this rule for templates is never
reduced; template recognition happens by lookahead
in the token processing code in yylex. */
@@ -968,19 +1084,19 @@ typename: TYPENAME
{
$$.stoken.ptr = "int";
$$.stoken.length = 3;
- $$.type = builtin_type (current_gdbarch)->builtin_int;
+ $$.type = parse_type->builtin_int;
}
| LONG
{
$$.stoken.ptr = "long";
$$.stoken.length = 4;
- $$.type = builtin_type (current_gdbarch)->builtin_long;
+ $$.type = parse_type->builtin_long;
}
| SHORT
{
$$.stoken.ptr = "short";
$$.stoken.length = 5;
- $$.type = builtin_type (current_gdbarch)->builtin_short;
+ $$.type = parse_type->builtin_short;
}
;
@@ -1042,11 +1158,7 @@ name_not_typename : NAME
/*** Needs some error checking for the float case ***/
static int
-parse_number (p, len, parsed_float, putithere)
- char *p;
- int len;
- int parsed_float;
- YYSTYPE *putithere;
+parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere)
{
/* FIXME: Shouldn't these be unsigned? We don't deal with negative values
here, and we do kind of silly things like cast to unsigned. */
@@ -1072,18 +1184,56 @@ parse_number (p, len, parsed_float, putithere)
if (parsed_float)
{
/* It's a float since it contains a point or an exponent. */
- char *s = malloc (len);
- int num = 0; /* number of tokens scanned by scanf */
- char saved_char = p[len];
+ char *s;
+ int num; /* number of tokens scanned by scanf */
+ char saved_char;
+
+ /* If it ends at "df", "dd" or "dl", take it as type of decimal floating
+ point. Return DECFLOAT. */
+
+ if (len >= 2 && p[len - 2] == 'd' && p[len - 1] == 'f')
+ {
+ p[len - 2] = '\0';
+ putithere->typed_val_decfloat.type
+ = parse_type->builtin_decfloat;
+ decimal_from_string (putithere->typed_val_decfloat.val, 4,
+ gdbarch_byte_order (parse_gdbarch), p);
+ p[len - 2] = 'd';
+ return DECFLOAT;
+ }
+ if (len >= 2 && p[len - 2] == 'd' && p[len - 1] == 'd')
+ {
+ p[len - 2] = '\0';
+ putithere->typed_val_decfloat.type
+ = parse_type->builtin_decdouble;
+ decimal_from_string (putithere->typed_val_decfloat.val, 8,
+ gdbarch_byte_order (parse_gdbarch), p);
+ p[len - 2] = 'd';
+ return DECFLOAT;
+ }
+
+ if (len >= 2 && p[len - 2] == 'd' && p[len - 1] == 'l')
+ {
+ p[len - 2] = '\0';
+ putithere->typed_val_decfloat.type
+ = parse_type->builtin_declong;
+ decimal_from_string (putithere->typed_val_decfloat.val, 16,
+ gdbarch_byte_order (parse_gdbarch), p);
+ p[len - 2] = 'd';
+ return DECFLOAT;
+ }
+
+ s = malloc (len);
+ saved_char = p[len];
p[len] = 0; /* null-terminate the token */
- num = sscanf (p, DOUBLEST_SCAN_FORMAT "%s",
+ num = sscanf (p, "%" DOUBLEST_SCAN_FORMAT "%s",
&putithere->typed_val_float.dval, s);
p[len] = saved_char; /* restore the input stream */
if (num == 1)
putithere->typed_val_float.type =
- builtin_type (current_gdbarch)->builtin_double;
+ parse_type->builtin_double;
if (num == 2 )
{
@@ -1091,10 +1241,10 @@ parse_number (p, len, parsed_float, putithere)
double. */
if (!strcasecmp (s, "f"))
putithere->typed_val_float.type =
- builtin_type (current_gdbarch)->builtin_float;
+ parse_type->builtin_float;
else if (!strcasecmp (s, "l"))
putithere->typed_val_float.type =
- builtin_type (current_gdbarch)->builtin_long_double;
+ parse_type->builtin_long_double;
else
{
free (s);
@@ -1205,9 +1355,9 @@ parse_number (p, len, parsed_float, putithere)
un = (ULONGEST)n >> 2;
if (long_p == 0
- && (un >> (gdbarch_int_bit (current_gdbarch) - 2)) == 0)
+ && (un >> (gdbarch_int_bit (parse_gdbarch) - 2)) == 0)
{
- high_bit = ((ULONGEST)1) << (gdbarch_int_bit (current_gdbarch) - 1);
+ high_bit = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch) - 1);
/* A large decimal (not hex or octal) constant (between INT_MAX
and UINT_MAX) is a long or unsigned long, according to ANSI,
@@ -1215,28 +1365,28 @@ parse_number (p, len, parsed_float, putithere)
int. This probably should be fixed. GCC gives a warning on
such constants. */
- unsigned_type = builtin_type (current_gdbarch)->builtin_unsigned_int;
- signed_type = builtin_type (current_gdbarch)->builtin_int;
+ unsigned_type = parse_type->builtin_unsigned_int;
+ signed_type = parse_type->builtin_int;
}
else if (long_p <= 1
- && (un >> (gdbarch_long_bit (current_gdbarch) - 2)) == 0)
+ && (un >> (gdbarch_long_bit (parse_gdbarch) - 2)) == 0)
{
- high_bit = ((ULONGEST)1) << (gdbarch_long_bit (current_gdbarch) - 1);
- unsigned_type = builtin_type (current_gdbarch)->builtin_unsigned_long;
- signed_type = builtin_type (current_gdbarch)->builtin_long;
+ high_bit = ((ULONGEST)1) << (gdbarch_long_bit (parse_gdbarch) - 1);
+ unsigned_type = parse_type->builtin_unsigned_long;
+ signed_type = parse_type->builtin_long;
}
else
{
int shift;
if (sizeof (ULONGEST) * HOST_CHAR_BIT
- < gdbarch_long_long_bit (current_gdbarch))
+ < gdbarch_long_long_bit (parse_gdbarch))
/* A long long does not fit in a LONGEST. */
shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1);
else
- shift = (gdbarch_long_long_bit (current_gdbarch) - 1);
+ shift = (gdbarch_long_long_bit (parse_gdbarch) - 1);
high_bit = (ULONGEST) 1 << shift;
- unsigned_type = builtin_type (current_gdbarch)->builtin_unsigned_long_long;
- signed_type = builtin_type (current_gdbarch)->builtin_long_long;
+ unsigned_type = parse_type->builtin_unsigned_long_long;
+ signed_type = parse_type->builtin_long_long;
}
putithere->typed_val_int.val = n;
@@ -1256,67 +1406,454 @@ parse_number (p, len, parsed_float, putithere)
return INT;
}
+/* Temporary obstack used for holding strings. */
+static struct obstack tempbuf;
+static int tempbuf_init;
+
+/* Parse a C escape sequence. The initial backslash of the sequence
+ is at (*PTR)[-1]. *PTR will be updated to point to just after the
+ last character of the sequence. If OUTPUT is not NULL, the
+ translated form of the escape sequence will be written there. If
+ OUTPUT is NULL, no output is written and the call will only affect
+ *PTR. If an escape sequence is expressed in target bytes, then the
+ entire sequence will simply be copied to OUTPUT. Return 1 if any
+ character was emitted, 0 otherwise. */
+
+int
+c_parse_escape (char **ptr, struct obstack *output)
+{
+ char *tokptr = *ptr;
+ int result = 1;
+
+ /* Some escape sequences undergo character set conversion. Those we
+ translate here. */
+ switch (*tokptr)
+ {
+ /* Hex escapes do not undergo character set conversion, so keep
+ the escape sequence for later. */
+ case 'x':
+ if (output)
+ obstack_grow_str (output, "\\x");
+ ++tokptr;
+ if (!isxdigit (*tokptr))
+ error (_("\\x escape without a following hex digit"));
+ while (isxdigit (*tokptr))
+ {
+ if (output)
+ obstack_1grow (output, *tokptr);
+ ++tokptr;
+ }
+ break;
+
+ /* Octal escapes do not undergo character set conversion, so
+ keep the escape sequence for later. */
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ {
+ int i;
+ if (output)
+ obstack_grow_str (output, "\\");
+ for (i = 0;
+ i < 3 && isdigit (*tokptr) && *tokptr != '8' && *tokptr != '9';
+ ++i)
+ {
+ if (output)
+ obstack_1grow (output, *tokptr);
+ ++tokptr;
+ }
+ }
+ break;
+
+ /* We handle UCNs later. We could handle them here, but that
+ would mean a spurious error in the case where the UCN could
+ be converted to the target charset but not the host
+ charset. */
+ case 'u':
+ case 'U':
+ {
+ char c = *tokptr;
+ int i, len = c == 'U' ? 8 : 4;
+ if (output)
+ {
+ obstack_1grow (output, '\\');
+ obstack_1grow (output, *tokptr);
+ }
+ ++tokptr;
+ if (!isxdigit (*tokptr))
+ error (_("\\%c escape without a following hex digit"), c);
+ for (i = 0; i < len && isxdigit (*tokptr); ++i)
+ {
+ if (output)
+ obstack_1grow (output, *tokptr);
+ ++tokptr;
+ }
+ }
+ break;
+
+ /* We must pass backslash through so that it does not
+ cause quoting during the second expansion. */
+ case '\\':
+ if (output)
+ obstack_grow_str (output, "\\\\");
+ ++tokptr;
+ break;
+
+ /* Escapes which undergo conversion. */
+ case 'a':
+ if (output)
+ obstack_1grow (output, '\a');
+ ++tokptr;
+ break;
+ case 'b':
+ if (output)
+ obstack_1grow (output, '\b');
+ ++tokptr;
+ break;
+ case 'f':
+ if (output)
+ obstack_1grow (output, '\f');
+ ++tokptr;
+ break;
+ case 'n':
+ if (output)
+ obstack_1grow (output, '\n');
+ ++tokptr;
+ break;
+ case 'r':
+ if (output)
+ obstack_1grow (output, '\r');
+ ++tokptr;
+ break;
+ case 't':
+ if (output)
+ obstack_1grow (output, '\t');
+ ++tokptr;
+ break;
+ case 'v':
+ if (output)
+ obstack_1grow (output, '\v');
+ ++tokptr;
+ break;
+
+ /* GCC extension. */
+ case 'e':
+ if (output)
+ obstack_1grow (output, HOST_ESCAPE_CHAR);
+ ++tokptr;
+ break;
+
+ /* Backslash-newline expands to nothing at all. */
+ case '\n':
+ ++tokptr;
+ result = 0;
+ break;
+
+ /* A few escapes just expand to the character itself. */
+ case '\'':
+ case '\"':
+ case '?':
+ /* GCC extensions. */
+ case '(':
+ case '{':
+ case '[':
+ case '%':
+ /* Unrecognized escapes turn into the character itself. */
+ default:
+ if (output)
+ obstack_1grow (output, *tokptr);
+ ++tokptr;
+ break;
+ }
+ *ptr = tokptr;
+ return result;
+}
+
+/* Parse a string or character literal from TOKPTR. The string or
+ character may be wide or unicode. *OUTPTR is set to just after the
+ end of the literal in the input string. The resulting token is
+ stored in VALUE. This returns a token value, either STRING or
+ CHAR, depending on what was parsed. *HOST_CHARS is set to the
+ number of host characters in the literal. */
+static int
+parse_string_or_char (char *tokptr, char **outptr, struct typed_stoken *value,
+ int *host_chars)
+{
+ int quote, i;
+ enum c_string_type type;
+
+ /* Build the gdb internal form of the input string in tempbuf. Note
+ that the buffer is null byte terminated *only* for the
+ convenience of debugging gdb itself and printing the buffer
+ contents when the buffer contains no embedded nulls. Gdb does
+ not depend upon the buffer being null byte terminated, it uses
+ the length string instead. This allows gdb to handle C strings
+ (as well as strings in other languages) with embedded null
+ bytes */
+
+ if (!tempbuf_init)
+ tempbuf_init = 1;
+ else
+ obstack_free (&tempbuf, NULL);
+ obstack_init (&tempbuf);
+
+ /* Record the string type. */
+ if (*tokptr == 'L')
+ {
+ type = C_WIDE_STRING;
+ ++tokptr;
+ }
+ else if (*tokptr == 'u')
+ {
+ type = C_STRING_16;
+ ++tokptr;
+ }
+ else if (*tokptr == 'U')
+ {
+ type = C_STRING_32;
+ ++tokptr;
+ }
+ else
+ type = C_STRING;
+
+ /* Skip the quote. */
+ quote = *tokptr;
+ if (quote == '\'')
+ type |= C_CHAR;
+ ++tokptr;
+
+ *host_chars = 0;
+
+ while (*tokptr)
+ {
+ char c = *tokptr;
+ if (c == '\\')
+ {
+ ++tokptr;
+ *host_chars += c_parse_escape (&tokptr, &tempbuf);
+ }
+ else if (c == quote)
+ break;
+ else
+ {
+ obstack_1grow (&tempbuf, c);
+ ++tokptr;
+ /* FIXME: this does the wrong thing with multi-byte host
+ characters. We could use mbrlen here, but that would
+ make "set host-charset" a bit less useful. */
+ ++*host_chars;
+ }
+ }
+
+ if (*tokptr != quote)
+ {
+ if (quote == '"')
+ error ("Unterminated string in expression.");
+ else
+ error ("Unmatched single quote.");
+ }
+ ++tokptr;
+
+ value->type = type;
+ value->ptr = obstack_base (&tempbuf);
+ value->length = obstack_object_size (&tempbuf);
+
+ *outptr = tokptr;
+
+ return quote == '"' ? STRING : CHAR;
+}
+
struct token
{
char *operator;
int token;
enum exp_opcode opcode;
+ int cxx_only;
};
static const struct token tokentab3[] =
{
- {">>=", ASSIGN_MODIFY, BINOP_RSH},
- {"<<=", ASSIGN_MODIFY, BINOP_LSH}
+ {">>=", ASSIGN_MODIFY, BINOP_RSH, 0},
+ {"<<=", ASSIGN_MODIFY, BINOP_LSH, 0},
+ {"->*", ARROW_STAR, BINOP_END, 1}
};
static const struct token tokentab2[] =
{
- {"+=", ASSIGN_MODIFY, BINOP_ADD},
- {"-=", ASSIGN_MODIFY, BINOP_SUB},
- {"*=", ASSIGN_MODIFY, BINOP_MUL},
- {"/=", ASSIGN_MODIFY, BINOP_DIV},
- {"%=", ASSIGN_MODIFY, BINOP_REM},
- {"|=", ASSIGN_MODIFY, BINOP_BITWISE_IOR},
- {"&=", ASSIGN_MODIFY, BINOP_BITWISE_AND},
- {"^=", ASSIGN_MODIFY, BINOP_BITWISE_XOR},
- {"++", INCREMENT, BINOP_END},
- {"--", DECREMENT, BINOP_END},
- {"->", ARROW, BINOP_END},
- {"&&", ANDAND, BINOP_END},
- {"||", OROR, BINOP_END},
- {"::", COLONCOLON, BINOP_END},
- {"<<", LSH, BINOP_END},
- {">>", RSH, BINOP_END},
- {"==", EQUAL, BINOP_END},
- {"!=", NOTEQUAL, BINOP_END},
- {"<=", LEQ, BINOP_END},
- {">=", GEQ, BINOP_END}
+ {"+=", ASSIGN_MODIFY, BINOP_ADD, 0},
+ {"-=", ASSIGN_MODIFY, BINOP_SUB, 0},
+ {"*=", ASSIGN_MODIFY, BINOP_MUL, 0},
+ {"/=", ASSIGN_MODIFY, BINOP_DIV, 0},
+ {"%=", ASSIGN_MODIFY, BINOP_REM, 0},
+ {"|=", ASSIGN_MODIFY, BINOP_BITWISE_IOR, 0},
+ {"&=", ASSIGN_MODIFY, BINOP_BITWISE_AND, 0},
+ {"^=", ASSIGN_MODIFY, BINOP_BITWISE_XOR, 0},
+ {"++", INCREMENT, BINOP_END, 0},
+ {"--", DECREMENT, BINOP_END, 0},
+ {"->", ARROW, BINOP_END, 0},
+ {"&&", ANDAND, BINOP_END, 0},
+ {"||", OROR, BINOP_END, 0},
+ /* "::" is *not* only C++: gdb overrides its meaning in several
+ different ways, e.g., 'filename'::func, function::variable. */
+ {"::", COLONCOLON, BINOP_END, 0},
+ {"<<", LSH, BINOP_END, 0},
+ {">>", RSH, BINOP_END, 0},
+ {"==", EQUAL, BINOP_END, 0},
+ {"!=", NOTEQUAL, BINOP_END, 0},
+ {"<=", LEQ, BINOP_END, 0},
+ {">=", GEQ, BINOP_END, 0},
+ {".*", DOT_STAR, BINOP_END, 1}
+ };
+
+/* Identifier-like tokens. */
+static const struct token ident_tokens[] =
+ {
+ {"unsigned", UNSIGNED, OP_NULL, 0},
+ {"template", TEMPLATE, OP_NULL, 1},
+ {"volatile", VOLATILE_KEYWORD, OP_NULL, 0},
+ {"struct", STRUCT, OP_NULL, 0},
+ {"signed", SIGNED_KEYWORD, OP_NULL, 0},
+ {"sizeof", SIZEOF, OP_NULL, 0},
+ {"double", DOUBLE_KEYWORD, OP_NULL, 0},
+ {"false", FALSEKEYWORD, OP_NULL, 1},
+ {"class", CLASS, OP_NULL, 1},
+ {"union", UNION, OP_NULL, 0},
+ {"short", SHORT, OP_NULL, 0},
+ {"const", CONST_KEYWORD, OP_NULL, 0},
+ {"enum", ENUM, OP_NULL, 0},
+ {"long", LONG, OP_NULL, 0},
+ {"true", TRUEKEYWORD, OP_NULL, 1},
+ {"int", INT_KEYWORD, OP_NULL, 0},
+
+ {"and", ANDAND, BINOP_END, 1},
+ {"and_eq", ASSIGN_MODIFY, BINOP_BITWISE_AND, 1},
+ {"bitand", '&', OP_NULL, 1},
+ {"bitor", '|', OP_NULL, 1},
+ {"compl", '~', OP_NULL, 1},
+ {"not", '!', OP_NULL, 1},
+ {"not_eq", NOTEQUAL, BINOP_END, 1},
+ {"or", OROR, BINOP_END, 1},
+ {"or_eq", ASSIGN_MODIFY, BINOP_BITWISE_IOR, 1},
+ {"xor", '^', OP_NULL, 1},
+ {"xor_eq", ASSIGN_MODIFY, BINOP_BITWISE_XOR, 1}
};
+/* When we find that lexptr (the global var defined in parse.c) is
+ pointing at a macro invocation, we expand the invocation, and call
+ scan_macro_expansion to save the old lexptr here and point lexptr
+ into the expanded text. When we reach the end of that, we call
+ end_macro_expansion to pop back to the value we saved here. The
+ macro expansion code promises to return only fully-expanded text,
+ so we don't need to "push" more than one level.
+
+ This is disgusting, of course. It would be cleaner to do all macro
+ expansion beforehand, and then hand that to lexptr. But we don't
+ really know where the expression ends. Remember, in a command like
+
+ (gdb) break *ADDRESS if CONDITION
+
+ we evaluate ADDRESS in the scope of the current frame, but we
+ evaluate CONDITION in the scope of the breakpoint's location. So
+ it's simply wrong to try to macro-expand the whole thing at once. */
+static char *macro_original_text;
+
+/* We save all intermediate macro expansions on this obstack for the
+ duration of a single parse. The expansion text may sometimes have
+ to live past the end of the expansion, due to yacc lookahead.
+ Rather than try to be clever about saving the data for a single
+ token, we simply keep it all and delete it after parsing has
+ completed. */
+static struct obstack expansion_obstack;
+
+static void
+scan_macro_expansion (char *expansion)
+{
+ char *copy;
+
+ /* We'd better not be trying to push the stack twice. */
+ gdb_assert (! macro_original_text);
+
+ /* Copy to the obstack, and then free the intermediate
+ expansion. */
+ copy = obstack_copy0 (&expansion_obstack, expansion, strlen (expansion));
+ xfree (expansion);
+
+ /* Save the old lexptr value, so we can return to it when we're done
+ parsing the expanded text. */
+ macro_original_text = lexptr;
+ lexptr = copy;
+}
+
+
+static int
+scanning_macro_expansion (void)
+{
+ return macro_original_text != 0;
+}
+
+
+static void
+finished_macro_expansion (void)
+{
+ /* There'd better be something to pop back to. */
+ gdb_assert (macro_original_text);
+
+ /* Pop back to the original text. */
+ lexptr = macro_original_text;
+ macro_original_text = 0;
+}
+
+
+static void
+scan_macro_cleanup (void *dummy)
+{
+ if (macro_original_text)
+ finished_macro_expansion ();
+
+ obstack_free (&expansion_obstack, NULL);
+}
+
+
+/* The scope used for macro expansion. */
+static struct macro_scope *expression_macro_scope;
+
+/* This is set if a NAME token appeared at the very end of the input
+ string, with no whitespace separating the name from the EOF. This
+ is used only when parsing to do field name completion. */
+static int saw_name_at_eof;
+
+/* This is set if the previously-returned token was a structure
+ operator -- either '.' or ARROW. This is used only when parsing to
+ do field name completion. */
+static int last_was_structop;
+
/* Read one token, getting characters through lexptr. */
static int
-yylex ()
+yylex (void)
{
int c;
int namelen;
unsigned int i;
char *tokstart;
- char *tokptr;
- int tempbufindex;
- static char *tempbuf;
- static int tempbufsize;
- char * token_string = NULL;
- int class_prefix = 0;
-
+ int saw_structop = last_was_structop;
+ char *copy;
+
+ last_was_structop = 0;
+
retry:
/* Check if this is a macro invocation that we need to expand. */
if (! scanning_macro_expansion ())
{
char *expanded = macro_expand_next (&lexptr,
- expression_macro_lookup_func,
- expression_macro_lookup_baton);
+ standard_macro_lookup,
+ expression_macro_scope);
if (expanded)
scan_macro_expansion (expanded);
@@ -1329,6 +1866,10 @@ yylex ()
for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++)
if (strncmp (tokstart, tokentab3[i].operator, 3) == 0)
{
+ if (tokentab3[i].cxx_only
+ && parse_language->la_language != language_cplus)
+ break;
+
lexptr += 3;
yylval.opcode = tokentab3[i].opcode;
return tokentab3[i].token;
@@ -1338,8 +1879,14 @@ yylex ()
for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++)
if (strncmp (tokstart, tokentab2[i].operator, 2) == 0)
{
+ if (tokentab2[i].cxx_only
+ && parse_language->la_language != language_cplus)
+ break;
+
lexptr += 2;
yylval.opcode = tokentab2[i].opcode;
+ if (in_parse_field && tokentab2[i].token == ARROW)
+ last_was_structop = 1;
return tokentab2[i].token;
}
@@ -1348,6 +1895,8 @@ yylex ()
case 0:
/* If we were just scanning the result of a macro expansion,
then we need to resume scanning the original text.
+ If we're parsing for field name completion, and the previous
+ token allows such completion, return a COMPLETE token.
Otherwise, we were already scanning the original text, and
we're really done. */
if (scanning_macro_expansion ())
@@ -1355,6 +1904,13 @@ yylex ()
finished_macro_expansion ();
goto retry;
}
+ else if (saw_name_at_eof)
+ {
+ saw_name_at_eof = 0;
+ return COMPLETE;
+ }
+ else if (saw_structop)
+ return COMPLETE;
else
return 0;
@@ -1364,51 +1920,13 @@ yylex ()
lexptr++;
goto retry;
- case '\'':
- /* We either have a character constant ('0' or '\177' for example)
- or we have a quoted symbol reference ('foo(int,int)' in C++
- for example). */
- lexptr++;
- c = *lexptr++;
- if (c == '\\')
- c = parse_escape (&lexptr);
- else if (c == '\'')
- error ("Empty character constant.");
- else if (! host_char_to_target (c, &c))
- {
- int toklen = lexptr - tokstart + 1;
- char *tok = alloca (toklen + 1);
- memcpy (tok, tokstart, toklen);
- tok[toklen] = '\0';
- error ("There is no character corresponding to %s in the target "
- "character set `%s'.", tok, target_charset ());
- }
-
- yylval.typed_val_int.val = c;
- yylval.typed_val_int.type = builtin_type (current_gdbarch)->builtin_char;
-
- c = *lexptr++;
- if (c != '\'')
- {
- namelen = skip_quoted (tokstart) - tokstart;
- if (namelen > 2)
- {
- lexptr = tokstart + namelen;
- if (lexptr[-1] != '\'')
- error ("Unmatched single quote.");
- namelen -= 2;
- tokstart++;
- goto tryname;
- }
- error ("Invalid character constant.");
- }
- return INT;
-
+ case '[':
case '(':
paren_depth++;
lexptr++;
return c;
+ case ']':
case ')':
if (paren_depth == 0)
return 0;
@@ -1427,7 +1945,11 @@ yylex ()
case '.':
/* Might be a floating point number. */
if (lexptr[1] < '0' || lexptr[1] > '9')
- goto symbol; /* Nope, must be a symbol. */
+ {
+ if (in_parse_field)
+ last_was_structop = 1;
+ goto symbol; /* Nope, must be a symbol. */
+ }
/* FALL THRU into number case. */
case '0':
@@ -1506,8 +2028,6 @@ yylex ()
case '@':
case '<':
case '>':
- case '[':
- case ']':
case '?':
case ':':
case '=':
@@ -1517,70 +2037,33 @@ yylex ()
lexptr++;
return c;
+ case 'L':
+ case 'u':
+ case 'U':
+ if (tokstart[1] != '"' && tokstart[1] != '\'')
+ break;
+ /* Fall through. */
+ case '\'':
case '"':
-
- /* Build the gdb internal form of the input string in tempbuf,
- translating any standard C escape forms seen. Note that the
- buffer is null byte terminated *only* for the convenience of
- debugging gdb itself and printing the buffer contents when
- the buffer contains no embedded nulls. Gdb does not depend
- upon the buffer being null byte terminated, it uses the length
- string instead. This allows gdb to handle C strings (as well
- as strings in other languages) with embedded null bytes */
-
- tokptr = ++tokstart;
- tempbufindex = 0;
-
- do {
- char *char_start_pos = tokptr;
-
- /* Grow the static temp buffer if necessary, including allocating
- the first one on demand. */
- if (tempbufindex + 1 >= tempbufsize)
- {
- tempbuf = (char *) realloc (tempbuf, tempbufsize += 64);
- }
- switch (*tokptr)
+ {
+ int host_len;
+ int result = parse_string_or_char (tokstart, &lexptr, &yylval.tsval,
+ &host_len);
+ if (result == CHAR)
{
- case '\0':
- case '"':
- /* Do nothing, loop will terminate. */
- break;
- case '\\':
- tokptr++;
- c = parse_escape (&tokptr);
- if (c == -1)
+ if (host_len == 0)
+ error ("Empty character constant.");
+ else if (host_len > 2 && c == '\'')
{
- continue;
+ ++tokstart;
+ namelen = lexptr - tokstart - 1;
+ goto tryname;
}
- tempbuf[tempbufindex++] = c;
- break;
- default:
- c = *tokptr++;
- if (! host_char_to_target (c, &c))
- {
- int len = tokptr - char_start_pos;
- char *copy = alloca (len + 1);
- memcpy (copy, char_start_pos, len);
- copy[len] = '\0';
-
- error ("There is no character corresponding to `%s' "
- "in the target character set `%s'.",
- copy, target_charset ());
- }
- tempbuf[tempbufindex++] = c;
- break;
+ else if (host_len > 1)
+ error ("Invalid character constant.");
}
- } while ((*tokptr != '"') && (*tokptr != '\0'));
- if (*tokptr++ != '"')
- {
- error ("Unterminated string in expression.");
- }
- tempbuf[tempbufindex] = '\0'; /* See note above */
- yylval.sval.ptr = tempbuf;
- yylval.sval.length = tempbufindex;
- lexptr = tokptr;
- return (STRING);
+ return result;
+ }
}
if (!(c == '_' || c == '$'
@@ -1627,65 +2110,24 @@ yylex ()
tryname:
- /* Catch specific keywords. Should be done with a data structure. */
- switch (namelen)
- {
- case 8:
- if (strncmp (tokstart, "unsigned", 8) == 0)
- return UNSIGNED;
- if (current_language->la_language == language_cplus
- && strncmp (tokstart, "template", 8) == 0)
- return TEMPLATE;
- if (strncmp (tokstart, "volatile", 8) == 0)
- return VOLATILE_KEYWORD;
- break;
- case 6:
- if (strncmp (tokstart, "struct", 6) == 0)
- return STRUCT;
- if (strncmp (tokstart, "signed", 6) == 0)
- return SIGNED_KEYWORD;
- if (strncmp (tokstart, "sizeof", 6) == 0)
- return SIZEOF;
- if (strncmp (tokstart, "double", 6) == 0)
- return DOUBLE_KEYWORD;
- break;
- case 5:
- if (current_language->la_language == language_cplus)
- {
- if (strncmp (tokstart, "false", 5) == 0)
- return FALSEKEYWORD;
- if (strncmp (tokstart, "class", 5) == 0)
- return CLASS;
- }
- if (strncmp (tokstart, "union", 5) == 0)
- return UNION;
- if (strncmp (tokstart, "short", 5) == 0)
- return SHORT;
- if (strncmp (tokstart, "const", 5) == 0)
- return CONST_KEYWORD;
- break;
- case 4:
- if (strncmp (tokstart, "enum", 4) == 0)
- return ENUM;
- if (strncmp (tokstart, "long", 4) == 0)
- return LONG;
- if (current_language->la_language == language_cplus)
- {
- if (strncmp (tokstart, "true", 4) == 0)
- return TRUEKEYWORD;
- }
- break;
- case 3:
- if (strncmp (tokstart, "int", 3) == 0)
- return INT_KEYWORD;
- break;
- default:
- break;
- }
-
yylval.sval.ptr = tokstart;
yylval.sval.length = namelen;
+ /* Catch specific keywords. */
+ copy = copy_name (yylval.sval);
+ for (i = 0; i < sizeof ident_tokens / sizeof ident_tokens[0]; i++)
+ if (strcmp (copy, ident_tokens[i].operator) == 0)
+ {
+ if (ident_tokens[i].cxx_only
+ && parse_language->la_language != language_cplus)
+ break;
+
+ /* It is ok to always set this, even though we don't always
+ strictly need to. */
+ yylval.opcode = ident_tokens[i].opcode;
+ return ident_tokens[i].token;
+ }
+
if (*tokstart == '$')
{
write_dollar_variable (yylval.sval);
@@ -1698,16 +2140,14 @@ yylex ()
currently as names of types; NAME for other symbols.
The caller is not constrained to care about the distinction. */
{
- char *tmp = copy_name (yylval.sval);
struct symbol *sym;
int is_a_field_of_this = 0;
int hextype;
- sym = lookup_symbol (tmp, expression_context_block,
+ sym = lookup_symbol (copy, expression_context_block,
VAR_DOMAIN,
- current_language->la_language == language_cplus
- ? &is_a_field_of_this : (int *) NULL,
- (struct symtab **) NULL);
+ parse_language->la_language == language_cplus
+ ? &is_a_field_of_this : (int *) NULL);
/* Call lookup_symtab, not lookup_partial_symtab, in case there are
no psymtabs (coff, xcoff, or some future change to blow away the
psymtabs once once symbols are read). */
@@ -1721,7 +2161,7 @@ yylex ()
{ /* See if it's a file name. */
struct symtab *symtab;
- symtab = lookup_symtab (tmp);
+ symtab = lookup_symtab (copy);
if (symtab)
{
@@ -1739,17 +2179,17 @@ yylex ()
return TYPENAME;
}
yylval.tsym.type
- = language_lookup_primitive_type_by_name (current_language,
- current_gdbarch, tmp);
+ = language_lookup_primitive_type_by_name (parse_language,
+ parse_gdbarch, copy);
if (yylval.tsym.type != NULL)
return TYPENAME;
/* Input names that aren't symbols but ARE valid hex numbers,
when the input radix permits them, can be names or numbers
depending on the parse. Note we support radixes > 16 here. */
- if (!sym &&
- ((tokstart[0] >= 'a' && tokstart[0] < 'a' + input_radix - 10) ||
- (tokstart[0] >= 'A' && tokstart[0] < 'A' + input_radix - 10)))
+ if (!sym
+ && ((tokstart[0] >= 'a' && tokstart[0] < 'a' + input_radix - 10)
+ || (tokstart[0] >= 'A' && tokstart[0] < 'A' + input_radix - 10)))
{
YYSTYPE newlval; /* Its value is ignored. */
hextype = parse_number (tokstart, namelen, 0, &newlval);
@@ -1764,13 +2204,47 @@ yylex ()
/* Any other kind of symbol */
yylval.ssym.sym = sym;
yylval.ssym.is_a_field_of_this = is_a_field_of_this;
+ if (in_parse_field && *lexptr == '\0')
+ saw_name_at_eof = 1;
return NAME;
}
}
+int
+c_parse (void)
+{
+ int result;
+ struct cleanup *back_to = make_cleanup (free_current_contents,
+ &expression_macro_scope);
+
+ /* Set up the scope for macro expansion. */
+ expression_macro_scope = NULL;
+
+ if (expression_context_block)
+ expression_macro_scope
+ = sal_macro_scope (find_pc_line (expression_context_pc, 0));
+ else
+ expression_macro_scope = default_macro_scope ();
+ if (! expression_macro_scope)
+ expression_macro_scope = user_macro_scope ();
+
+ /* Initialize macro expansion code. */
+ obstack_init (&expansion_obstack);
+ gdb_assert (! macro_original_text);
+ make_cleanup (scan_macro_cleanup, 0);
+
+ /* Initialize some state used by the lexer. */
+ last_was_structop = 0;
+ saw_name_at_eof = 0;
+
+ result = yyparse ();
+ do_cleanups (back_to);
+ return result;
+}
+
+
void
-yyerror (msg)
- char *msg;
+yyerror (char *msg)
{
if (prev_lexptr)
lexptr = prev_lexptr;