Author: markj
Date: Mon Oct 6 21:52:40 2014
New Revision: 272671
URL: https://svnweb.freebsd.org/changeset/base/272671
Log:
Treat D keywords as identifiers in certain postfix expressions. This allows
one to, for example, access the "provider" field of a struct g_consumer,
even though "provider" is a D keyword.
PR: 169657
MFC after: 2 months
Discussed with: Bryan Cantrill
Sponsored by: EMC / Isilon Storage Division
Modified:
head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_grammar.y
Modified: head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_grammar.y
==============================================================================
--- head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_grammar.y Mon Oct
6 20:48:01 2014 (r272670)
+++ head/cddl/contrib/opensolaris/lib/libdtrace/common/dt_grammar.y Mon Oct
6 21:52:40 2014 (r272671)
@@ -207,6 +207,8 @@
%type <l_tok> unary_operator
%type <l_tok> struct_or_union
+%type <l_str> dtrace_keyword_ident
+
%%
dtrace_program: d_expression DT_TOK_EOF { return (dt_node_root($1)); }
@@ -391,12 +393,18 @@ postfix_expression:
| postfix_expression DT_TOK_DOT DT_TOK_TNAME {
$$ = OP2(DT_TOK_DOT, $1, dt_node_ident($3));
}
+ | postfix_expression DT_TOK_DOT dtrace_keyword_ident {
+ $$ = OP2(DT_TOK_DOT, $1, dt_node_ident($3));
+ }
| postfix_expression DT_TOK_PTR DT_TOK_IDENT {
$$ = OP2(DT_TOK_PTR, $1, dt_node_ident($3));
}
| postfix_expression DT_TOK_PTR DT_TOK_TNAME {
$$ = OP2(DT_TOK_PTR, $1, dt_node_ident($3));
}
+ | postfix_expression DT_TOK_PTR dtrace_keyword_ident {
+ $$ = OP2(DT_TOK_PTR, $1, dt_node_ident($3));
+ }
| postfix_expression DT_TOK_ADDADD {
$$ = OP1(DT_TOK_POSTINC, $1);
}
@@ -411,6 +419,10 @@ postfix_expression:
DT_TOK_TNAME DT_TOK_RPAR {
$$ = dt_node_offsetof($3, $5);
}
+ | DT_TOK_OFFSETOF DT_TOK_LPAR type_name DT_TOK_COMMA
+ dtrace_keyword_ident DT_TOK_RPAR {
+ $$ = dt_node_offsetof($3, $5);
+ }
| DT_TOK_XLATE DT_TOK_LT type_name DT_TOK_GT
DT_TOK_LPAR expression DT_TOK_RPAR {
$$ = OP2(DT_TOK_XLATE, dt_node_type($3), $6);
@@ -835,4 +847,15 @@ function_parameters:
| parameter_type_list { $$ = $1; }
;
+dtrace_keyword_ident:
+ DT_KEY_PROBE { $$ = DUP("probe"); }
+ | DT_KEY_PROVIDER { $$ = DUP("provider"); }
+ | DT_KEY_SELF { $$ = DUP("self"); }
+ | DT_KEY_STRING { $$ = DUP("string"); }
+ | DT_TOK_STRINGOF { $$ = DUP("stringof"); }
+ | DT_KEY_USERLAND { $$ = DUP("userland"); }
+ | DT_TOK_XLATE { $$ = DUP("xlate"); }
+ | DT_KEY_XLATOR { $$ = DUP("translator"); }
+ ;
+
%%
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