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* c-exp.y (enum token_flags): New.

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(struct token) <cxx_only>: Remove.
	<flags>: New field.
	(tokentab3, tokentab2, ident_tokens): Update.
	(lex_one_token): Update.  Handle FLAG_SHADOW.
This commit is contained in:
Tom Tromey 2012-07-19 15:34:38 +00:00
parent 9eaf670568
commit 274b54d7e2
2 changed files with 67 additions and 28 deletions
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8
gdb/ChangeLog
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@ -1,3 +1,11 @@
2012-07-19 Tom Tromey <tromey@redhat.com>
* c-exp.y (enum token_flags): New.
(struct token) <cxx_only>: Remove.
<flags>: New field.
(tokentab3, tokentab2, ident_tokens): Update.
(lex_one_token): Update. Handle FLAG_SHADOW.
2012-07-19 Tom Tromey <tromey@redhat.com>
* ax-gdb.c (gen_expr): Handle UNOP_CAST_TYPE, UNOP_MEMVAL_TYPE.

87
gdb/c-exp.y
View File

@ -1963,19 +1963,34 @@ parse_string_or_char (char *tokptr, char **outptr, struct typed_stoken *value,
return quote == '"' ? STRING : CHAR;
}
/* This is used to associate some attributes with a token. */
enum token_flags
{
/* If this bit is set, the token is C++-only. */
FLAG_CXX = 1,
/* If this bit is set, the token is conditional: if there is a
symbol of the same name, then the token is a symbol; otherwise,
the token is a keyword. */
FLAG_SHADOW = 2
};
struct token
{
char *operator;
int token;
enum exp_opcode opcode;
int cxx_only;
enum token_flags flags;
};
static const struct token tokentab3[] =
{
{">>=", ASSIGN_MODIFY, BINOP_RSH, 0},
{"<<=", ASSIGN_MODIFY, BINOP_LSH, 0},
{"->*", ARROW_STAR, BINOP_END, 1},
{"->*", ARROW_STAR, BINOP_END, FLAG_CXX},
{"...", DOTDOTDOT, BINOP_END, 0}
};
@ -2003,48 +2018,48 @@ static const struct token tokentab2[] =
{"!=", NOTEQUAL, BINOP_END, 0},
{"<=", LEQ, BINOP_END, 0},
{">=", GEQ, BINOP_END, 0},
{".*", DOT_STAR, BINOP_END, 1}
{".*", DOT_STAR, BINOP_END, FLAG_CXX}
};
/* Identifier-like tokens. */
static const struct token ident_tokens[] =
{
{"unsigned", UNSIGNED, OP_NULL, 0},
{"template", TEMPLATE, OP_NULL, 1},
{"template", TEMPLATE, OP_NULL, FLAG_CXX},
{"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},
{"false", FALSEKEYWORD, OP_NULL, FLAG_CXX},
{"class", CLASS, OP_NULL, FLAG_CXX},
{"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},
{"true", TRUEKEYWORD, OP_NULL, FLAG_CXX},
{"int", INT_KEYWORD, OP_NULL, 0},
{"new", NEW, OP_NULL, 1},
{"delete", DELETE, OP_NULL, 1},
{"operator", OPERATOR, OP_NULL, 1},
{"new", NEW, OP_NULL, FLAG_CXX},
{"delete", DELETE, OP_NULL, FLAG_CXX},
{"operator", OPERATOR, OP_NULL, FLAG_CXX},
{"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},
{"and", ANDAND, BINOP_END, FLAG_CXX},
{"and_eq", ASSIGN_MODIFY, BINOP_BITWISE_AND, FLAG_CXX},
{"bitand", '&', OP_NULL, FLAG_CXX},
{"bitor", '|', OP_NULL, FLAG_CXX},
{"compl", '~', OP_NULL, FLAG_CXX},
{"not", '!', OP_NULL, FLAG_CXX},
{"not_eq", NOTEQUAL, BINOP_END, FLAG_CXX},
{"or", OROR, BINOP_END, FLAG_CXX},
{"or_eq", ASSIGN_MODIFY, BINOP_BITWISE_IOR, FLAG_CXX},
{"xor", '^', OP_NULL, FLAG_CXX},
{"xor_eq", ASSIGN_MODIFY, BINOP_BITWISE_XOR, FLAG_CXX},
{"const_cast", CONST_CAST, OP_NULL, 1 },
{"dynamic_cast", DYNAMIC_CAST, OP_NULL, 1 },
{"static_cast", STATIC_CAST, OP_NULL, 1 },
{"reinterpret_cast", REINTERPRET_CAST, OP_NULL, 1 }
{"const_cast", CONST_CAST, OP_NULL, FLAG_CXX },
{"dynamic_cast", DYNAMIC_CAST, OP_NULL, FLAG_CXX },
{"static_cast", STATIC_CAST, OP_NULL, FLAG_CXX },
{"reinterpret_cast", REINTERPRET_CAST, OP_NULL, FLAG_CXX }
};
/* When we find that lexptr (the global var defined in parse.c) is
@ -2180,7 +2195,7 @@ lex_one_token (void)
for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++)
if (strncmp (tokstart, tokentab3[i].operator, 3) == 0)
{
if (tokentab3[i].cxx_only
if ((tokentab3[i].flags & FLAG_CXX) != 0
&& parse_language->la_language != language_cplus)
break;
@ -2193,7 +2208,7 @@ lex_one_token (void)
for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++)
if (strncmp (tokstart, tokentab2[i].operator, 2) == 0)
{
if (tokentab2[i].cxx_only
if ((tokentab2[i].flags & FLAG_CXX) != 0
&& parse_language->la_language != language_cplus)
break;
@ -2467,10 +2482,26 @@ lex_one_token (void)
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
if ((ident_tokens[i].flags & FLAG_CXX) != 0
&& parse_language->la_language != language_cplus)
break;
if ((ident_tokens[i].flags & FLAG_SHADOW) != 0)
{
int is_a_field_of_this = 0;
if (lookup_symbol (copy, expression_context_block,
VAR_DOMAIN,
(parse_language->la_language == language_cplus
? &is_a_field_of_this
: NULL))
!= NULL)
{
/* The keyword is shadowed. */
break;
}
}
/* It is ok to always set this, even though we don't always
strictly need to. */
yylval.opcode = ident_tokens[i].opcode;