+++ /dev/null
-/* YACC parser for C expressions, for GDB.
-
- Copyright (C) 1986, 1989-1991, 1993-1994, 2002, 2006-2012 Free
- Software Foundation, Inc.
-
- 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.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-/* Parse a C expression from text in a string, and return the result
- as a struct expression pointer. That structure contains arithmetic
- operations in reverse polish, with constants represented by
- operations that are followed by special data. See expression.h for
- the details of the format. What is important here is that it can
- be built up sequentially during the process of parsing; the lower
- levels of the tree always come first in the result.
-
- Note that malloc's and realloc's in this file are transformed to
- xmalloc and xrealloc respectively by the same sed command in the
- makefile that remaps any other malloc/realloc inserted by the
- parser generator. Doing this with #defines and trying to control
- the interaction with include files (<malloc.h> and <stdlib.h> for
- example) just became too messy, particularly when such includes can
- be inserted at random times by the parser generator. */
-
-%{
-
-#include "defs.h"
-#include "gdb_string.h"
-#include <ctype.h>
-#include "expression.h"
-
-#include "objc-lang.h" /* For objc language constructs. */
-
-#include "value.h"
-#include "parser-defs.h"
-#include "language.h"
-#include "c-lang.h"
-#include "bfd.h" /* Required by objfiles.h. */
-#include "symfile.h" /* Required by objfiles.h. */
-#include "objfiles.h" /* For have_full_symbols and have_partial_symbols. */
-#include "top.h"
-#include "completer.h" /* For skip_quoted(). */
-#include "block.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 yacc generated parsers in gdb. Note that these are only
- the variables produced by yacc. If other parser generators (bison,
- byacc, etc) produce additional global names that conflict at link
- time, then those parser generators need to be fixed instead of
- adding those names to this list. */
-
-#define yymaxdepth objc_maxdepth
-#define yyparse objc_parse
-#define yylex objc_lex
-#define yyerror objc_error
-#define yylval objc_lval
-#define yychar objc_char
-#define yydebug objc_debug
-#define yypact objc_pact
-#define yyr1 objc_r1
-#define yyr2 objc_r2
-#define yydef objc_def
-#define yychk objc_chk
-#define yypgo objc_pgo
-#define yyact objc_act
-#define yyexca objc_exca
-#define yyerrflag objc_errflag
-#define yynerrs objc_nerrs
-#define yyps objc_ps
-#define yypv objc_pv
-#define yys objc_s
-#define yy_yys objc_yys
-#define yystate objc_state
-#define yytmp objc_tmp
-#define yyv objc_v
-#define yy_yyv objc_yyv
-#define yyval objc_val
-#define yylloc objc_lloc
-#define yyreds objc_reds /* With YYDEBUG defined */
-#define yytoks objc_toks /* With YYDEBUG defined */
-#define yyname objc_name /* With YYDEBUG defined */
-#define yyrule objc_rule /* With YYDEBUG defined */
-#define yylhs objc_yylhs
-#define yylen objc_yylen
-#define yydefred objc_yydefred
-#define yydgoto objc_yydgoto
-#define yysindex objc_yysindex
-#define yyrindex objc_yyrindex
-#define yygindex objc_yygindex
-#define yytable objc_yytable
-#define yycheck objc_yycheck
-#define yyss objc_yyss
-#define yysslim objc_yysslim
-#define yyssp objc_yyssp
-#define yystacksize objc_yystacksize
-#define yyvs objc_yyvs
-#define yyvsp objc_yyvsp
-
-#ifndef YYDEBUG
-#define YYDEBUG 0 /* Default to no yydebug support. */
-#endif
-
-int yyparse (void);
-
-static int yylex (void);
-
-void yyerror (char *);
-
-%}
-
-/* Although the yacc "value" of an expression is not used,
- since the result is stored in the structure being created,
- other node types do have values. */
-
-%union
- {
- LONGEST lval;
- struct {
- LONGEST val;
- struct type *type;
- } typed_val_int;
- struct {
- DOUBLEST dval;
- struct type *type;
- } typed_val_float;
- struct symbol *sym;
- struct type *tval;
- struct stoken sval;
- struct ttype tsym;
- struct symtoken ssym;
- int voidval;
- struct block *bval;
- enum exp_opcode opcode;
- struct internalvar *ivar;
- struct objc_class_str class;
-
- struct type **tvec;
- int *ivec;
- }
-
-%{
-/* YYSTYPE gets defined by %union. */
-static int parse_number (char *, int, int, YYSTYPE *);
-%}
-
-%type <voidval> exp exp1 type_exp start variable qualified_name lcurly
-%type <lval> rcurly
-%type <tval> type typebase
-%type <tvec> nonempty_typelist
-/* %type <bval> block */
-
-/* Fancy type parsing. */
-%type <voidval> func_mod direct_abs_decl abs_decl
-%type <tval> ptype
-%type <lval> array_mod
-
-%token <typed_val_int> INT
-%token <typed_val_float> FLOAT
-
-/* Both NAME and TYPENAME tokens represent symbols in the input, and
- both convey their data as strings. But a TYPENAME is a string that
- happens to be defined as a typedef or builtin type name (such as
- int or char) and a NAME is any other symbol. Contexts where this
- distinction is not important can use the nonterminal "name", which
- matches either NAME or TYPENAME. */
-
-%token <sval> STRING
-%token <sval> NSSTRING /* ObjC Foundation "NSString" literal */
-%token <sval> SELECTOR /* ObjC "@selector" pseudo-operator */
-%token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence. */
-%token <tsym> TYPENAME
-%token <class> CLASSNAME /* ObjC Class name */
-%type <sval> name
-%type <ssym> name_not_typename
-%type <tsym> typename
-
-/* A NAME_OR_INT is a symbol which is not known in the symbol table,
- but which would parse as a valid number in the current input radix.
- E.g. "c" when input_radix==16. Depending on the parse, it will be
- turned into a name or into a number. */
-
-%token <ssym> NAME_OR_INT
-
-%token STRUCT CLASS UNION ENUM SIZEOF UNSIGNED COLONCOLON
-%token TEMPLATE
-%token ERROR
-
-/* Special type cases, put in to allow the parser to distinguish
- different legal basetypes. */
-%token SIGNED_KEYWORD LONG SHORT INT_KEYWORD CONST_KEYWORD VOLATILE_KEYWORD DOUBLE_KEYWORD
-
-%token <voidval> VARIABLE
-
-%token <opcode> ASSIGN_MODIFY
-
-%left ','
-%left ABOVE_COMMA
-%right '=' ASSIGN_MODIFY
-%right '?'
-%left OROR
-%left ANDAND
-%left '|'
-%left '^'
-%left '&'
-%left EQUAL NOTEQUAL
-%left '<' '>' LEQ GEQ
-%left LSH RSH
-%left '@'
-%left '+' '-'
-%left '*' '/' '%'
-%right UNARY INCREMENT DECREMENT
-%right ARROW '.' '[' '('
-%token <ssym> BLOCKNAME
-%type <bval> block
-%left COLONCOLON
-
-\f
-%%
-
-start : exp1
- | type_exp
- ;
-
-type_exp: type
- { write_exp_elt_opcode(OP_TYPE);
- write_exp_elt_type($1);
- write_exp_elt_opcode(OP_TYPE);}
- ;
-
-/* Expressions, including the comma operator. */
-exp1 : exp
- | exp1 ',' exp
- { write_exp_elt_opcode (BINOP_COMMA); }
- ;
-
-/* Expressions, not including the comma operator. */
-exp : '*' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_IND); }
- ;
-
-exp : '&' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_ADDR); }
- ;
-
-exp : '-' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_NEG); }
- ;
-
-exp : '!' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_LOGICAL_NOT); }
- ;
-
-exp : '~' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_COMPLEMENT); }
- ;
-
-exp : INCREMENT exp %prec UNARY
- { write_exp_elt_opcode (UNOP_PREINCREMENT); }
- ;
-
-exp : DECREMENT exp %prec UNARY
- { write_exp_elt_opcode (UNOP_PREDECREMENT); }
- ;
-
-exp : exp INCREMENT %prec UNARY
- { write_exp_elt_opcode (UNOP_POSTINCREMENT); }
- ;
-
-exp : exp DECREMENT %prec UNARY
- { write_exp_elt_opcode (UNOP_POSTDECREMENT); }
- ;
-
-exp : SIZEOF exp %prec UNARY
- { write_exp_elt_opcode (UNOP_SIZEOF); }
- ;
-
-exp : exp ARROW name
- { write_exp_elt_opcode (STRUCTOP_PTR);
- write_exp_string ($3);
- 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
- static member! FIXME */
- write_exp_elt_opcode (UNOP_ADDR);
- write_exp_elt_opcode (STRUCTOP_MPTR); }
- ;
-exp : exp ARROW '*' exp
- { write_exp_elt_opcode (STRUCTOP_MPTR); }
- ;
-
-exp : exp '.' name
- { write_exp_elt_opcode (STRUCTOP_STRUCT);
- write_exp_string ($3);
- 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
- static member! FIXME */
- write_exp_elt_opcode (UNOP_ADDR);
- write_exp_elt_opcode (STRUCTOP_MEMBER); }
- ;
-
-exp : exp '.' '*' exp
- { write_exp_elt_opcode (STRUCTOP_MEMBER); }
- ;
-
-exp : exp '[' exp1 ']'
- { write_exp_elt_opcode (BINOP_SUBSCRIPT); }
- ;
-/*
- * The rules below parse ObjC message calls of the form:
- * '[' target selector {':' argument}* ']'
- */
-
-exp : '[' TYPENAME
- {
- CORE_ADDR class;
-
- class = lookup_objc_class (parse_gdbarch,
- copy_name ($2.stoken));
- if (class == 0)
- error (_("%s is not an ObjC Class"),
- copy_name ($2.stoken));
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (parse_type->builtin_int);
- write_exp_elt_longcst ((LONGEST) class);
- write_exp_elt_opcode (OP_LONG);
- start_msglist();
- }
- msglist ']'
- { write_exp_elt_opcode (OP_OBJC_MSGCALL);
- end_msglist();
- write_exp_elt_opcode (OP_OBJC_MSGCALL);
- }
- ;
-
-exp : '[' CLASSNAME
- {
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (parse_type->builtin_int);
- write_exp_elt_longcst ((LONGEST) $2.class);
- write_exp_elt_opcode (OP_LONG);
- start_msglist();
- }
- msglist ']'
- { write_exp_elt_opcode (OP_OBJC_MSGCALL);
- end_msglist();
- write_exp_elt_opcode (OP_OBJC_MSGCALL);
- }
- ;
-
-exp : '[' exp
- { start_msglist(); }
- msglist ']'
- { write_exp_elt_opcode (OP_OBJC_MSGCALL);
- end_msglist();
- write_exp_elt_opcode (OP_OBJC_MSGCALL);
- }
- ;
-
-msglist : name
- { add_msglist(&$1, 0); }
- | msgarglist
- ;
-
-msgarglist : msgarg
- | msgarglist msgarg
- ;
-
-msgarg : name ':' exp
- { add_msglist(&$1, 1); }
- | ':' exp /* Unnamed arg. */
- { add_msglist(0, 1); }
- | ',' exp /* Variable number of args. */
- { add_msglist(0, 0); }
- ;
-
-exp : exp '('
- /* This is to save the value of arglist_len
- being accumulated by an outer function call. */
- { start_arglist (); }
- arglist ')' %prec ARROW
- { write_exp_elt_opcode (OP_FUNCALL);
- write_exp_elt_longcst ((LONGEST) end_arglist ());
- write_exp_elt_opcode (OP_FUNCALL); }
- ;
-
-lcurly : '{'
- { start_arglist (); }
- ;
-
-arglist :
- ;
-
-arglist : exp
- { arglist_len = 1; }
- ;
-
-arglist : arglist ',' exp %prec ABOVE_COMMA
- { arglist_len++; }
- ;
-
-rcurly : '}'
- { $$ = end_arglist () - 1; }
- ;
-exp : lcurly arglist rcurly %prec ARROW
- { write_exp_elt_opcode (OP_ARRAY);
- write_exp_elt_longcst ((LONGEST) 0);
- write_exp_elt_longcst ((LONGEST) $3);
- write_exp_elt_opcode (OP_ARRAY); }
- ;
-
-exp : lcurly type rcurly exp %prec UNARY
- { write_exp_elt_opcode (UNOP_MEMVAL);
- write_exp_elt_type ($2);
- write_exp_elt_opcode (UNOP_MEMVAL); }
- ;
-
-exp : '(' type ')' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_CAST);
- write_exp_elt_type ($2);
- write_exp_elt_opcode (UNOP_CAST); }
- ;
-
-exp : '(' exp1 ')'
- { }
- ;
-
-/* Binary operators in order of decreasing precedence. */
-
-exp : exp '@' exp
- { write_exp_elt_opcode (BINOP_REPEAT); }
- ;
-
-exp : exp '*' exp
- { write_exp_elt_opcode (BINOP_MUL); }
- ;
-
-exp : exp '/' exp
- { write_exp_elt_opcode (BINOP_DIV); }
- ;
-
-exp : exp '%' exp
- { write_exp_elt_opcode (BINOP_REM); }
- ;
-
-exp : exp '+' exp
- { write_exp_elt_opcode (BINOP_ADD); }
- ;
-
-exp : exp '-' exp
- { write_exp_elt_opcode (BINOP_SUB); }
- ;
-
-exp : exp LSH exp
- { write_exp_elt_opcode (BINOP_LSH); }
- ;
-
-exp : exp RSH exp
- { write_exp_elt_opcode (BINOP_RSH); }
- ;
-
-exp : exp EQUAL exp
- { write_exp_elt_opcode (BINOP_EQUAL); }
- ;
-
-exp : exp NOTEQUAL exp
- { write_exp_elt_opcode (BINOP_NOTEQUAL); }
- ;
-
-exp : exp LEQ exp
- { write_exp_elt_opcode (BINOP_LEQ); }
- ;
-
-exp : exp GEQ exp
- { write_exp_elt_opcode (BINOP_GEQ); }
- ;
-
-exp : exp '<' exp
- { write_exp_elt_opcode (BINOP_LESS); }
- ;
-
-exp : exp '>' exp
- { write_exp_elt_opcode (BINOP_GTR); }
- ;
-
-exp : exp '&' exp
- { write_exp_elt_opcode (BINOP_BITWISE_AND); }
- ;
-
-exp : exp '^' exp
- { write_exp_elt_opcode (BINOP_BITWISE_XOR); }
- ;
-
-exp : exp '|' exp
- { write_exp_elt_opcode (BINOP_BITWISE_IOR); }
- ;
-
-exp : exp ANDAND exp
- { write_exp_elt_opcode (BINOP_LOGICAL_AND); }
- ;
-
-exp : exp OROR exp
- { write_exp_elt_opcode (BINOP_LOGICAL_OR); }
- ;
-
-exp : exp '?' exp ':' exp %prec '?'
- { write_exp_elt_opcode (TERNOP_COND); }
- ;
-
-exp : exp '=' exp
- { write_exp_elt_opcode (BINOP_ASSIGN); }
- ;
-
-exp : exp ASSIGN_MODIFY exp
- { write_exp_elt_opcode (BINOP_ASSIGN_MODIFY);
- write_exp_elt_opcode ($2);
- write_exp_elt_opcode (BINOP_ASSIGN_MODIFY); }
- ;
-
-exp : INT
- { write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type ($1.type);
- write_exp_elt_longcst ((LONGEST)($1.val));
- write_exp_elt_opcode (OP_LONG); }
- ;
-
-exp : NAME_OR_INT
- { YYSTYPE val;
- parse_number ($1.stoken.ptr,
- $1.stoken.length, 0, &val);
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (val.typed_val_int.type);
- write_exp_elt_longcst ((LONGEST)
- val.typed_val_int.val);
- write_exp_elt_opcode (OP_LONG);
- }
- ;
-
-
-exp : FLOAT
- { write_exp_elt_opcode (OP_DOUBLE);
- write_exp_elt_type ($1.type);
- write_exp_elt_dblcst ($1.dval);
- write_exp_elt_opcode (OP_DOUBLE); }
- ;
-
-exp : variable
- ;
-
-exp : VARIABLE
- /* Already written by write_dollar_variable. */
- ;
-
-exp : SELECTOR
- {
- write_exp_elt_opcode (OP_OBJC_SELECTOR);
- write_exp_string ($1);
- write_exp_elt_opcode (OP_OBJC_SELECTOR); }
- ;
-
-exp : SIZEOF '(' type ')' %prec UNARY
- { write_exp_elt_opcode (OP_LONG);
- 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)
- {
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (parse_type->builtin_char);
- write_exp_elt_longcst ((LONGEST)(*sp++));
- write_exp_elt_opcode (OP_LONG);
- }
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (parse_type->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); }
- ;
-
-exp : NSSTRING /* ObjC NextStep NSString constant
- * of the form '@' '"' string '"'.
- */
- { write_exp_elt_opcode (OP_OBJC_NSSTRING);
- write_exp_string ($1);
- write_exp_elt_opcode (OP_OBJC_NSSTRING); }
- ;
-
-block : BLOCKNAME
- {
- if ($1.sym != 0)
- $$ = SYMBOL_BLOCK_VALUE ($1.sym);
- else
- {
- struct symtab *tem =
- lookup_symtab (copy_name ($1.stoken));
- if (tem)
- $$ = BLOCKVECTOR_BLOCK (BLOCKVECTOR (tem),
- STATIC_BLOCK);
- else
- error (_("No file or function \"%s\"."),
- copy_name ($1.stoken));
- }
- }
- ;
-
-block : block COLONCOLON name
- { struct symbol *tem
- = lookup_symbol (copy_name ($3), $1,
- VAR_DOMAIN, (int *) NULL);
- if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK)
- error (_("No function \"%s\" in specified context."),
- copy_name ($3));
- $$ = SYMBOL_BLOCK_VALUE (tem); }
- ;
-
-variable: block COLONCOLON name
- { struct symbol *sym;
- sym = lookup_symbol (copy_name ($3), $1,
- VAR_DOMAIN, (int *) NULL);
- if (sym == 0)
- error (_("No symbol \"%s\" in specified context."),
- copy_name ($3));
- if (symbol_read_needs_frame (sym))
- {
- if (innermost_block == 0
- || contained_in (block_found,
- innermost_block))
- innermost_block = block_found;
- }
-
- write_exp_elt_opcode (OP_VAR_VALUE);
- /* block_found is set by lookup_symbol. */
- write_exp_elt_block (block_found);
- write_exp_elt_sym (sym);
- write_exp_elt_opcode (OP_VAR_VALUE); }
- ;
-
-qualified_name: typebase COLONCOLON name
- {
- struct type *type = $1;
- if (TYPE_CODE (type) != TYPE_CODE_STRUCT
- && TYPE_CODE (type) != TYPE_CODE_UNION)
- error (_("`%s' is not defined as an aggregate type."),
- TYPE_NAME (type));
-
- write_exp_elt_opcode (OP_SCOPE);
- write_exp_elt_type (type);
- write_exp_string ($3);
- write_exp_elt_opcode (OP_SCOPE);
- }
- | typebase COLONCOLON '~' name
- {
- struct type *type = $1;
- struct stoken tmp_token;
- if (TYPE_CODE (type) != TYPE_CODE_STRUCT
- && TYPE_CODE (type) != TYPE_CODE_UNION)
- error (_("`%s' is not defined as an aggregate type."),
- TYPE_NAME (type));
-
- if (strcmp (type_name_no_tag (type), $4.ptr) != 0)
- error (_("invalid destructor `%s::~%s'"),
- type_name_no_tag (type), $4.ptr);
-
- tmp_token.ptr = (char*) alloca ($4.length + 2);
- tmp_token.length = $4.length + 1;
- tmp_token.ptr[0] = '~';
- memcpy (tmp_token.ptr+1, $4.ptr, $4.length);
- tmp_token.ptr[tmp_token.length] = 0;
- write_exp_elt_opcode (OP_SCOPE);
- write_exp_elt_type (type);
- write_exp_string (tmp_token);
- write_exp_elt_opcode (OP_SCOPE);
- }
- ;
-
-variable: qualified_name
- | COLONCOLON name
- {
- char *name = copy_name ($2);
- struct symbol *sym;
- struct minimal_symbol *msymbol;
-
- sym =
- lookup_symbol (name, (const struct block *) NULL,
- VAR_DOMAIN, (int *) NULL);
- if (sym)
- {
- write_exp_elt_opcode (OP_VAR_VALUE);
- write_exp_elt_block (NULL);
- write_exp_elt_sym (sym);
- write_exp_elt_opcode (OP_VAR_VALUE);
- break;
- }
-
- msymbol = lookup_minimal_symbol (name, NULL, NULL);
- if (msymbol != NULL)
- write_exp_msymbol (msymbol);
- 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);
- }
- ;
-
-variable: name_not_typename
- { struct symbol *sym = $1.sym;
-
- if (sym)
- {
- if (symbol_read_needs_frame (sym))
- {
- if (innermost_block == 0 ||
- contained_in (block_found,
- innermost_block))
- innermost_block = block_found;
- }
-
- write_exp_elt_opcode (OP_VAR_VALUE);
- /* We want to use the selected frame, not
- another more inner frame which happens to
- be in the same block. */
- write_exp_elt_block (NULL);
- write_exp_elt_sym (sym);
- write_exp_elt_opcode (OP_VAR_VALUE);
- }
- else if ($1.is_a_field_of_this)
- {
- /* C++/ObjC: it hangs off of `this'/'self'.
- Must not inadvertently convert from a
- method call to data ref. */
- 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);
- write_exp_elt_opcode (STRUCTOP_PTR);
- write_exp_string ($1.stoken);
- write_exp_elt_opcode (STRUCTOP_PTR);
- }
- else
- {
- struct minimal_symbol *msymbol;
- char *arg = copy_name ($1.stoken);
-
- msymbol =
- lookup_minimal_symbol (arg, NULL, NULL);
- if (msymbol != NULL)
- write_exp_msymbol (msymbol);
- 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."),
- copy_name ($1.stoken));
- }
- }
- ;
-
-
-ptype : typebase
- /* "const" and "volatile" are curently ignored. A type
- qualifier before the type is currently handled in the
- typebase rule. The reason for recognizing these here
- (shift/reduce conflicts) might be obsolete now that some
- pointer to member rules have been deleted. */
- | typebase CONST_KEYWORD
- | typebase VOLATILE_KEYWORD
- | typebase abs_decl
- { $$ = follow_types ($1); }
- | typebase CONST_KEYWORD abs_decl
- { $$ = follow_types ($1); }
- | typebase VOLATILE_KEYWORD abs_decl
- { $$ = follow_types ($1); }
- ;
-
-abs_decl: '*'
- { push_type (tp_pointer); $$ = 0; }
- | '*' abs_decl
- { push_type (tp_pointer); $$ = $2; }
- | '&'
- { push_type (tp_reference); $$ = 0; }
- | '&' abs_decl
- { push_type (tp_reference); $$ = $2; }
- | direct_abs_decl
- ;
-
-direct_abs_decl: '(' abs_decl ')'
- { $$ = $2; }
- | direct_abs_decl array_mod
- {
- push_type_int ($2);
- push_type (tp_array);
- }
- | array_mod
- {
- push_type_int ($1);
- push_type (tp_array);
- $$ = 0;
- }
-
- | direct_abs_decl func_mod
- { push_type (tp_function); }
- | func_mod
- { push_type (tp_function); }
- ;
-
-array_mod: '[' ']'
- { $$ = -1; }
- | '[' INT ']'
- { $$ = $2.val; }
- ;
-
-func_mod: '(' ')'
- { $$ = 0; }
- | '(' nonempty_typelist ')'
- { free ($2); $$ = 0; }
- ;
-
-/* We used to try to recognize more pointer to member types here, but
- that didn't work (shift/reduce conflicts meant that these rules
- never got executed). The problem is that
- int (foo::bar::baz::bizzle)
- is a function type but
- int (foo::bar::baz::bizzle::*)
- is a pointer to member type. Stroustrup loses again! */
-
-type : ptype
- ;
-
-typebase /* Implements (approximately): (type-qualifier)* type-specifier. */
- : TYPENAME
- { $$ = $1.type; }
- | CLASSNAME
- {
- if ($1.type == NULL)
- error (_("No symbol \"%s\" in current context."),
- copy_name($1.stoken));
- else
- $$ = $1.type;
- }
- | INT_KEYWORD
- { $$ = parse_type->builtin_int; }
- | LONG
- { $$ = parse_type->builtin_long; }
- | SHORT
- { $$ = parse_type->builtin_short; }
- | LONG INT_KEYWORD
- { $$ = parse_type->builtin_long; }
- | UNSIGNED LONG INT_KEYWORD
- { $$ = parse_type->builtin_unsigned_long; }
- | LONG LONG
- { $$ = parse_type->builtin_long_long; }
- | LONG LONG INT_KEYWORD
- { $$ = parse_type->builtin_long_long; }
- | UNSIGNED LONG LONG
- { $$ = parse_type->builtin_unsigned_long_long; }
- | UNSIGNED LONG LONG INT_KEYWORD
- { $$ = parse_type->builtin_unsigned_long_long; }
- | SHORT INT_KEYWORD
- { $$ = parse_type->builtin_short; }
- | UNSIGNED SHORT INT_KEYWORD
- { $$ = parse_type->builtin_unsigned_short; }
- | DOUBLE_KEYWORD
- { $$ = parse_type->builtin_double; }
- | LONG DOUBLE_KEYWORD
- { $$ = parse_type->builtin_long_double; }
- | STRUCT name
- { $$ = lookup_struct (copy_name ($2),
- expression_context_block); }
- | CLASS name
- { $$ = lookup_struct (copy_name ($2),
- expression_context_block); }
- | UNION name
- { $$ = lookup_union (copy_name ($2),
- expression_context_block); }
- | ENUM name
- { $$ = lookup_enum (copy_name ($2),
- expression_context_block); }
- | UNSIGNED typename
- { $$ = lookup_unsigned_typename (parse_language,
- parse_gdbarch,
- TYPE_NAME($2.type)); }
- | UNSIGNED
- { $$ = parse_type->builtin_unsigned_int; }
- | SIGNED_KEYWORD typename
- { $$ = lookup_signed_typename (parse_language,
- parse_gdbarch,
- TYPE_NAME($2.type)); }
- | SIGNED_KEYWORD
- { $$ = parse_type->builtin_int; }
- | TEMPLATE name '<' type '>'
- { $$ = lookup_template_type(copy_name($2), $4,
- expression_context_block);
- }
- /* "const" and "volatile" are curently ignored. A type
- qualifier after the type is handled in the ptype rule. I
- think these could be too. */
- | CONST_KEYWORD typebase { $$ = $2; }
- | VOLATILE_KEYWORD typebase { $$ = $2; }
- ;
-
-typename: TYPENAME
- | INT_KEYWORD
- {
- $$.stoken.ptr = "int";
- $$.stoken.length = 3;
- $$.type = parse_type->builtin_int;
- }
- | LONG
- {
- $$.stoken.ptr = "long";
- $$.stoken.length = 4;
- $$.type = parse_type->builtin_long;
- }
- | SHORT
- {
- $$.stoken.ptr = "short";
- $$.stoken.length = 5;
- $$.type = parse_type->builtin_short;
- }
- ;
-
-nonempty_typelist
- : type
- { $$ = (struct type **) malloc (sizeof (struct type *) * 2);
- $<ivec>$[0] = 1; /* Number of types in vector. */
- $$[1] = $1;
- }
- | nonempty_typelist ',' type
- { int len = sizeof (struct type *) * (++($<ivec>1[0]) + 1);
- $$ = (struct type **) realloc ((char *) $1, len);
- $$[$<ivec>$[0]] = $3;
- }
- ;
-
-name : NAME { $$ = $1.stoken; }
- | BLOCKNAME { $$ = $1.stoken; }
- | TYPENAME { $$ = $1.stoken; }
- | CLASSNAME { $$ = $1.stoken; }
- | NAME_OR_INT { $$ = $1.stoken; }
- ;
-
-name_not_typename : NAME
- | BLOCKNAME
-/* These would be useful if name_not_typename was useful, but it is
- just a fake for "variable", so these cause reduce/reduce conflicts
- because the parser can't tell whether NAME_OR_INT is a
- name_not_typename (=variable, =exp) or just an exp. If
- name_not_typename was ever used in an lvalue context where only a
- name could occur, this might be useful. */
-/* | NAME_OR_INT */
- ;
-
-%%
-
-/* Take care of parsing a number (anything that starts with a digit).
- Set yylval and return the token type; update lexptr. LEN is the
- number of characters in it. */
-
-/*** Needs some error checking for the float case. ***/
-
-static int
-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. */
- LONGEST n = 0;
- LONGEST prevn = 0;
- unsigned LONGEST un;
-
- int i = 0;
- int c;
- int base = input_radix;
- int unsigned_p = 0;
-
- /* Number of "L" suffixes encountered. */
- int long_p = 0;
-
- /* We have found a "L" or "U" suffix. */
- int found_suffix = 0;
-
- unsigned LONGEST high_bit;
- struct type *signed_type;
- struct type *unsigned_type;
-
- if (parsed_float)
- {
- if (! parse_c_float (parse_gdbarch, p, len,
- &putithere->typed_val_float.dval,
- &putithere->typed_val_float.type))
- return ERROR;
- return FLOAT;
- }
-
- /* Handle base-switching prefixes 0x, 0t, 0d, and 0. */
- if (p[0] == '0')
- switch (p[1])
- {
- case 'x':
- case 'X':
- if (len >= 3)
- {
- p += 2;
- base = 16;
- len -= 2;
- }
- break;
-
- case 't':
- case 'T':
- case 'd':
- case 'D':
- if (len >= 3)
- {
- p += 2;
- base = 10;
- len -= 2;
- }
- break;
-
- default:
- base = 8;
- break;
- }
-
- while (len-- > 0)
- {
- c = *p++;
- if (c >= 'A' && c <= 'Z')
- c += 'a' - 'A';
- if (c != 'l' && c != 'u')
- n *= base;
- if (c >= '0' && c <= '9')
- {
- if (found_suffix)
- return ERROR;
- n += i = c - '0';
- }
- else
- {
- if (base > 10 && c >= 'a' && c <= 'f')
- {
- if (found_suffix)
- return ERROR;
- n += i = c - 'a' + 10;
- }
- else if (c == 'l')
- {
- ++long_p;
- found_suffix = 1;
- }
- else if (c == 'u')
- {
- unsigned_p = 1;
- found_suffix = 1;
- }
- else
- return ERROR; /* Char not a digit. */
- }
- if (i >= base)
- return ERROR; /* Invalid digit in this base. */
-
- /* Portably test for overflow (only works for nonzero values, so
- make a second check for zero). FIXME: Can't we just make n
- and prevn unsigned and avoid this? */
- if (c != 'l' && c != 'u' && (prevn >= n) && n != 0)
- unsigned_p = 1; /* Try something unsigned. */
-
- /* Portably test for unsigned overflow.
- FIXME: This check is wrong; for example it doesn't find
- overflow on 0x123456789 when LONGEST is 32 bits. */
- if (c != 'l' && c != 'u' && n != 0)
- {
- if ((unsigned_p && (unsigned LONGEST) prevn >= (unsigned LONGEST) n))
- error (_("Numeric constant too large."));
- }
- prevn = n;
- }
-
- /* An integer constant is an int, a long, or a long long. An L
- suffix forces it to be long; an LL suffix forces it to be long
- long. If not forced to a larger size, it gets the first type of
- the above that it fits in. To figure out whether it fits, we
- shift it right and see whether anything remains. Note that we
- can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or more in one
- operation, because many compilers will warn about such a shift
- (which always produces a zero result). Sometimes gdbarch_int_bit
- or gdbarch_long_int will be that big, sometimes not. To deal with
- the case where it is we just always shift the value more than
- once, with fewer bits each time. */
-
- un = (unsigned LONGEST)n >> 2;
- if (long_p == 0
- && (un >> (gdbarch_int_bit (parse_gdbarch) - 2)) == 0)
- {
- high_bit
- = ((unsigned LONGEST)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,
- never an unsigned int, but this code treats it as unsigned
- int. This probably should be fixed. GCC gives a warning on
- such constants. */
-
- unsigned_type = parse_type->builtin_unsigned_int;
- signed_type = parse_type->builtin_int;
- }
- else if (long_p <= 1
- && (un >> (gdbarch_long_bit (parse_gdbarch) - 2)) == 0)
- {
- high_bit
- = ((unsigned LONGEST)1) << (gdbarch_long_bit (parse_gdbarch) - 1);
- unsigned_type = parse_type->builtin_unsigned_long;
- signed_type = parse_type->builtin_long;
- }
- else
- {
- high_bit = (((unsigned LONGEST)1)
- << (gdbarch_long_long_bit (parse_gdbarch) - 32 - 1)
- << 16
- << 16);
- if (high_bit == 0)
- /* A long long does not fit in a LONGEST. */
- high_bit =
- (unsigned LONGEST)1 << (sizeof (LONGEST) * HOST_CHAR_BIT - 1);
- unsigned_type = parse_type->builtin_unsigned_long_long;
- signed_type = parse_type->builtin_long_long;
- }
-
- putithere->typed_val_int.val = n;
-
- /* If the high bit of the worked out type is set then this number
- has to be unsigned. */
-
- if (unsigned_p || (n & high_bit))
- {
- putithere->typed_val_int.type = unsigned_type;
- }
- else
- {
- putithere->typed_val_int.type = signed_type;
- }
-
- return INT;
-}
-
-struct token
-{
- char *operator;
- int token;
- enum exp_opcode opcode;
-};
-
-static const struct token tokentab3[] =
- {
- {">>=", ASSIGN_MODIFY, BINOP_RSH},
- {"<<=", ASSIGN_MODIFY, BINOP_LSH}
- };
-
-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}
- };
-
-/* Read one token, getting characters through lexptr. */
-
-static int
-yylex (void)
-{
- int c, tokchr;
- int namelen;
- unsigned int i;
- char *tokstart;
- char *tokptr;
- int tempbufindex;
- static char *tempbuf;
- static int tempbufsize;
-
- retry:
-
- tokstart = lexptr;
- /* See if it is a special token of length 3. */
- for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++)
- if (strncmp (tokstart, tokentab3[i].operator, 3) == 0)
- {
- lexptr += 3;
- yylval.opcode = tokentab3[i].opcode;
- return tokentab3[i].token;
- }
-
- /* See if it is a special token of length 2. */
- for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++)
- if (strncmp (tokstart, tokentab2[i].operator, 2) == 0)
- {
- lexptr += 2;
- yylval.opcode = tokentab2[i].opcode;
- return tokentab2[i].token;
- }
-
- c = 0;
- switch (tokchr = *tokstart)
- {
- case 0:
- return 0;
-
- case ' ':
- case '\t':
- case '\n':
- 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 (parse_gdbarch, &lexptr);
- else if (c == '\'')
- error (_("Empty character constant."));
-
- yylval.typed_val_int.val = c;
- yylval.typed_val_int.type = parse_type->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 '(':
- paren_depth++;
- lexptr++;
- return '(';
-
- case ')':
- if (paren_depth == 0)
- return 0;
- paren_depth--;
- lexptr++;
- return ')';
-
- case ',':
- if (comma_terminates && paren_depth == 0)
- return 0;
- lexptr++;
- return ',';
-
- case '.':
- /* Might be a floating point number. */
- if (lexptr[1] < '0' || lexptr[1] > '9')
- goto symbol; /* Nope, must be a symbol. */
- /* FALL THRU into number case. */
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- {
- /* It's a number. */
- int got_dot = 0, got_e = 0, toktype = FLOAT;
- /* Initialize toktype to anything other than ERROR. */
- char *p = tokstart;
- int hex = input_radix > 10;
- int local_radix = input_radix;
- if (tokchr == '0' && (p[1] == 'x' || p[1] == 'X'))
- {
- p += 2;
- hex = 1;
- local_radix = 16;
- }
- else if (tokchr == '0' && (p[1]=='t' || p[1]=='T'
- || p[1]=='d' || p[1]=='D'))
- {
- p += 2;
- hex = 0;
- local_radix = 10;
- }
-
- for (;; ++p)
- {
- /* This test includes !hex because 'e' is a valid hex digit
- and thus does not indicate a floating point number when
- the radix is hex. */
-
- if (!hex && (*p == 'e' || *p == 'E'))
- if (got_e)
- toktype = ERROR; /* Only one 'e' in a float. */
- else
- got_e = 1;
- /* This test does not include !hex, because a '.' always
- indicates a decimal floating point number regardless of
- the radix. */
- else if (*p == '.')
- if (got_dot)
- toktype = ERROR; /* Only one '.' in a float. */
- else
- got_dot = 1;
- else if (got_e && (p[-1] == 'e' || p[-1] == 'E') &&
- (*p == '-' || *p == '+'))
- /* This is the sign of the exponent, not the end of the
- number. */
- continue;
- /* Always take decimal digits; parse_number handles radix
- error. */
- else if (*p >= '0' && *p <= '9')
- continue;
- /* We will take letters only if hex is true, and only up
- to what the input radix would permit. FSF was content
- to rely on parse_number to validate; but it leaks. */
- else if (*p >= 'a' && *p <= 'z')
- {
- if (!hex || *p >= ('a' + local_radix - 10))
- toktype = ERROR;
- }
- else if (*p >= 'A' && *p <= 'Z')
- {
- if (!hex || *p >= ('A' + local_radix - 10))
- toktype = ERROR;
- }
- else break;
- }
- if (toktype != ERROR)
- toktype = parse_number (tokstart, p - tokstart,
- got_dot | got_e, &yylval);
- if (toktype == ERROR)
- {
- char *err_copy = (char *) alloca (p - tokstart + 1);
-
- memcpy (err_copy, tokstart, p - tokstart);
- err_copy[p - tokstart] = 0;
- error (_("Invalid number \"%s\"."), err_copy);
- }
- lexptr = p;
- return toktype;
- }
-
- case '+':
- case '-':
- case '*':
- case '/':
- case '%':
- case '|':
- case '&':
- case '^':
- case '~':
- case '!':
- case '<':
- case '>':
- case '[':
- case ']':
- case '?':
- case ':':
- case '=':
- case '{':
- case '}':
- symbol:
- lexptr++;
- return tokchr;
-
- case '@':
- if (strncmp(tokstart, "@selector", 9) == 0)
- {
- tokptr = strchr(tokstart, '(');
- if (tokptr == NULL)
- {
- error (_("Missing '(' in @selector(...)"));
- }
- tempbufindex = 0;
- tokptr++; /* Skip the '('. */
- do {
- /* Grow the static temp buffer if necessary, including
- allocating the first one on demand. */
- if (tempbufindex + 1 >= tempbufsize)
- {
- tempbuf = (char *) realloc (tempbuf, tempbufsize += 64);
- }
- tempbuf[tempbufindex++] = *tokptr++;
- } while ((*tokptr != ')') && (*tokptr != '\0'));
- if (*tokptr++ != ')')
- {
- error (_("Missing ')' in @selector(...)"));
- }
- tempbuf[tempbufindex] = '\0';
- yylval.sval.ptr = tempbuf;
- yylval.sval.length = tempbufindex;
- lexptr = tokptr;
- return SELECTOR;
- }
- if (tokstart[1] != '"')
- {
- lexptr++;
- return tokchr;
- }
- /* ObjC NextStep NSString constant: fall thru and parse like
- STRING. */
- tokstart++;
-
- 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 {
- /* 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)
- {
- case '\0':
- case '"':
- /* Do nothing, loop will terminate. */
- break;
- case '\\':
- tokptr++;
- c = parse_escape (parse_gdbarch, &tokptr);
- if (c == -1)
- {
- continue;
- }
- tempbuf[tempbufindex++] = c;
- break;
- default:
- tempbuf[tempbufindex++] = *tokptr++;
- break;
- }
- } 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 (tokchr == '@' ? NSSTRING : STRING);
- }
-
- if (!(tokchr == '_' || tokchr == '$' ||
- (tokchr >= 'a' && tokchr <= 'z') || (tokchr >= 'A' && tokchr <= 'Z')))
- /* We must have come across a bad character (e.g. ';'). */
- error (_("Invalid character '%c' in expression."), c);
-
- /* It's a name. See how long it is. */
- namelen = 0;
- for (c = tokstart[namelen];
- (c == '_' || c == '$' || (c >= '0' && c <= '9')
- || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '<');)
- {
- if (c == '<')
- {
- int i = namelen;
- while (tokstart[++i] && tokstart[i] != '>');
- if (tokstart[i] == '>')
- namelen = i;
- }
- c = tokstart[++namelen];
- }
-
- /* The token "if" terminates the expression and is NOT
- removed from the input stream. */
- if (namelen == 2 && tokstart[0] == 'i' && tokstart[1] == 'f')
- {
- return 0;
- }
-
- lexptr += namelen;
-
- tryname:
-
- /* Catch specific keywords. Should be done with a data structure. */
- switch (namelen)
- {
- case 8:
- if (strncmp (tokstart, "unsigned", 8) == 0)
- return UNSIGNED;
- if (parse_language->la_language == language_cplus
- && strncmp (tokstart, "template", 8) == 0)
- return TEMPLATE;
- if (strncmp (tokstart, "volatile", 8) == 0)
- return VOLATILE_KEYWORD;
- break;
- case 6:
- if (strncmp (tokstart, "struct", 6) == 0)
- return STRUCT;
- if (strncmp (tokstart, "signed", 6) == 0)
- return SIGNED_KEYWORD;
- if (strncmp (tokstart, "sizeof", 6) == 0)
- return SIZEOF;
- if (strncmp (tokstart, "double", 6) == 0)
- return DOUBLE_KEYWORD;
- break;
- case 5:
- if ((parse_language->la_language == language_cplus)
- && strncmp (tokstart, "class", 5) == 0)
- return CLASS;
- if (strncmp (tokstart, "union", 5) == 0)
- return UNION;
- if (strncmp (tokstart, "short", 5) == 0)
- return SHORT;
- if (strncmp (tokstart, "const", 5) == 0)
- return CONST_KEYWORD;
- break;
- case 4:
- if (strncmp (tokstart, "enum", 4) == 0)
- return ENUM;
- if (strncmp (tokstart, "long", 4) == 0)
- return LONG;
- break;
- case 3:
- if (strncmp (tokstart, "int", 3) == 0)
- return INT_KEYWORD;
- break;
- default:
- break;
- }
-
- yylval.sval.ptr = tokstart;
- yylval.sval.length = namelen;
-
- if (*tokstart == '$')
- {
- write_dollar_variable (yylval.sval);
- return VARIABLE;
- }
-
- /* Use token-type BLOCKNAME for symbols that happen to be defined as
- functions or symtabs. If this is not so, then ...
- Use token-type TYPENAME for symbols that happen to be defined
- 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, *need_this;
- int hextype;
-
- if (parse_language->la_language == language_cplus ||
- parse_language->la_language == language_objc)
- need_this = &is_a_field_of_this;
- else
- need_this = (int *) NULL;
-
- sym = lookup_symbol (tmp, expression_context_block,
- VAR_DOMAIN,
- need_this);
- /* 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 symbols are read). */
- if ((sym && SYMBOL_CLASS (sym) == LOC_BLOCK) ||
- lookup_symtab (tmp))
- {
- yylval.ssym.sym = sym;
- yylval.ssym.is_a_field_of_this = is_a_field_of_this;
- return BLOCKNAME;
- }
- if (sym && SYMBOL_CLASS (sym) == LOC_TYPEDEF)
- {
-#if 1
- /* Despite the following flaw, we need to keep this code
- enabled. Because we can get called from
- check_stub_method, if we don't handle nested types then
- it screws many operations in any program which uses
- nested types. */
- /* In "A::x", if x is a member function of A and there
- happens to be a type (nested or not, since the stabs
- don't make that distinction) named x, then this code
- incorrectly thinks we are dealing with nested types
- rather than a member function. */
-
- char *p;
- char *namestart;
- struct symbol *best_sym;
-
- /* Look ahead to detect nested types. This probably should
- be done in the grammar, but trying seemed to introduce a
- lot of shift/reduce and reduce/reduce conflicts. It's
- possible that it could be done, though. Or perhaps a
- non-grammar, but less ad hoc, approach would work well. */
-
- /* Since we do not currently have any way of distinguishing
- a nested type from a non-nested one (the stabs don't tell
- us whether a type is nested), we just ignore the
- containing type. */
-
- p = lexptr;
- best_sym = sym;
- while (1)
- {
- /* Skip whitespace. */
- while (*p == ' ' || *p == '\t' || *p == '\n')
- ++p;
- if (*p == ':' && p[1] == ':')
- {
- /* Skip the `::'. */
- p += 2;
- /* Skip whitespace. */
- while (*p == ' ' || *p == '\t' || *p == '\n')
- ++p;
- namestart = p;
- while (*p == '_' || *p == '$' || (*p >= '0' && *p <= '9')
- || (*p >= 'a' && *p <= 'z')
- || (*p >= 'A' && *p <= 'Z'))
- ++p;
- if (p != namestart)
- {
- struct symbol *cur_sym;
- /* As big as the whole rest of the expression,
- which is at least big enough. */
- char *ncopy = alloca (strlen (tmp) +
- strlen (namestart) + 3);
- char *tmp1;
-
- tmp1 = ncopy;
- memcpy (tmp1, tmp, strlen (tmp));
- tmp1 += strlen (tmp);
- memcpy (tmp1, "::", 2);
- tmp1 += 2;
- memcpy (tmp1, namestart, p - namestart);
- tmp1[p - namestart] = '\0';
- cur_sym = lookup_symbol (ncopy,
- expression_context_block,
- VAR_DOMAIN, (int *) NULL);
- if (cur_sym)
- {
- if (SYMBOL_CLASS (cur_sym) == LOC_TYPEDEF)
- {
- best_sym = cur_sym;
- lexptr = p;
- }
- else
- break;
- }
- else
- break;
- }
- else
- break;
- }
- else
- break;
- }
-
- yylval.tsym.type = SYMBOL_TYPE (best_sym);
-#else /* not 0 */
- yylval.tsym.type = SYMBOL_TYPE (sym);
-#endif /* not 0 */
- return TYPENAME;
- }
- yylval.tsym.type
- = language_lookup_primitive_type_by_name (parse_language,
- parse_gdbarch, tmp);
- if (yylval.tsym.type != NULL)
- return TYPENAME;
-
- /* See if it's an ObjC classname. */
- if (!sym)
- {
- CORE_ADDR Class = lookup_objc_class (parse_gdbarch, tmp);
- if (Class)
- {
- yylval.class.class = Class;
- if ((sym = lookup_struct_typedef (tmp,
- expression_context_block,
- 1)))
- yylval.class.type = SYMBOL_TYPE (sym);
- return CLASSNAME;
- }
- }
-
- /* 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)))
- {
- YYSTYPE newlval; /* Its value is ignored. */
- hextype = parse_number (tokstart, namelen, 0, &newlval);
- if (hextype == INT)
- {
- yylval.ssym.sym = sym;
- yylval.ssym.is_a_field_of_this = is_a_field_of_this;
- return NAME_OR_INT;
- }
- }
-
- /* Any other kind of symbol. */
- yylval.ssym.sym = sym;
- yylval.ssym.is_a_field_of_this = is_a_field_of_this;
- return NAME;
- }
-}
-
-void
-yyerror (char *msg)
-{
- if (*lexptr == '\0')
- error(_("A %s near end of expression."), (msg ? msg : "error"));
- else
- error (_("A %s in expression, near `%s'."), (msg ? msg : "error"),
- lexptr);
-}
projects / thirdparty / binutils-gdb.git / commitdiff
