/opensource.apple.com/source/gdb/gdb-413/src/gdb/ada-exp.y
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- /* YACC parser for Ada expressions, for GDB.
- Copyright (C) 1986, 1989, 1990, 1991, 1993, 1994, 1997, 2000, 2003
- Free Software Foundation, Inc.
- 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 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
- /* Parse an Ada 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.
- 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 <string.h>
- #include <ctype.h>
- #include "expression.h"
- #include "value.h"
- #include "parser-defs.h"
- #include "language.h"
- #include "ada-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 "frame.h"
- #include "block.h"
- /* 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. 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. */
- /* NOTE: This is clumsy, especially since BISON and FLEX provide --prefix
- options. I presume we are maintaining it to accommodate systems
- without BISON? (PNH) */
- #define yymaxdepth ada_maxdepth
- #define yyparse _ada_parse /* ada_parse calls this after initialization */
- #define yylex ada_lex
- #define yyerror ada_error
- #define yylval ada_lval
- #define yychar ada_char
- #define yydebug ada_debug
- #define yypact ada_pact
- #define yyr1 ada_r1
- #define yyr2 ada_r2
- #define yydef ada_def
- #define yychk ada_chk
- #define yypgo ada_pgo
- #define yyact ada_act
- #define yyexca ada_exca
- #define yyerrflag ada_errflag
- #define yynerrs ada_nerrs
- #define yyps ada_ps
- #define yypv ada_pv
- #define yys ada_s
- #define yy_yys ada_yys
- #define yystate ada_state
- #define yytmp ada_tmp
- #define yyv ada_v
- #define yy_yyv ada_yyv
- #define yyval ada_val
- #define yylloc ada_lloc
- #define yyreds ada_reds /* With YYDEBUG defined */
- #define yytoks ada_toks /* With YYDEBUG defined */
- #define yyname ada_name /* With YYDEBUG defined */
- #define yyrule ada_rule /* With YYDEBUG defined */
- #ifndef YYDEBUG
- #define YYDEBUG 1 /* Default to yydebug support */
- #endif
- #define YYFPRINTF parser_fprintf
- struct name_info {
- struct symbol* sym;
- struct minimal_symbol* msym;
- struct block* block;
- struct stoken stoken;
- };
- /* If expression is in the context of TYPE'(...), then TYPE, else
- * NULL. */
- static struct type* type_qualifier;
- int yyparse (void);
- static int yylex (void);
- void yyerror (char *);
- static struct stoken string_to_operator (struct stoken);
- static void write_attribute_call0 (enum ada_attribute);
- static void write_attribute_call1 (enum ada_attribute, LONGEST);
- static void write_attribute_calln (enum ada_attribute, int);
- static void write_object_renaming (struct block*, struct symbol*);
- static void write_var_from_name (struct block*, struct name_info);
- static LONGEST
- convert_char_literal (struct type*, LONGEST);
- %}
- %union
- {
- LONGEST lval;
- struct {
- LONGEST val;
- struct type *type;
- } typed_val;
- struct {
- DOUBLEST dval;
- struct type *type;
- } typed_val_float;
- struct type *tval;
- struct stoken sval;
- struct name_info ssym;
- int voidval;
- struct block *bval;
- struct internalvar *ivar;
- }
- %type <voidval> exp exp1 simple_exp start variable
- %type <tval> type
- %token <typed_val> INT NULL_PTR CHARLIT
- %token <typed_val_float> FLOAT
- %token <tval> TYPENAME
- %token <bval> BLOCKNAME
- /* 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 <ssym> NAME DOT_ID OBJECT_RENAMING
- %type <bval> block
- %type <lval> arglist tick_arglist
- %type <tval> save_qualifier
- %token DOT_ALL
- /* Special type cases, put in to allow the parser to distinguish different
- legal basetypes. */
- %token <lval> LAST REGNAME
- %token <ivar> INTERNAL_VARIABLE
- %nonassoc ASSIGN
- %left _AND_ OR XOR THEN ELSE
- %left '=' NOTEQUAL '<' '>' LEQ GEQ IN DOTDOT
- %left '@'
- %left '+' '-' '&'
- %left UNARY
- %left '*' '/' MOD REM
- %right STARSTAR ABS NOT
- /* The following are right-associative only so that reductions at this
- precedence have lower precedence than '.' and '('. The syntax still
- forces a.b.c, e.g., to be LEFT-associated. */
- %right TICK_ACCESS TICK_ADDRESS TICK_FIRST TICK_LAST TICK_LENGTH
- %right TICK_MAX TICK_MIN TICK_MODULUS
- %right TICK_POS TICK_RANGE TICK_SIZE TICK_TAG TICK_VAL
- %right '.' '(' '[' DOT_ID DOT_ALL
- %token ARROW NEW
- %%
- start : exp1
- | type { write_exp_elt_opcode (OP_TYPE);
- write_exp_elt_type ($1);
- write_exp_elt_opcode (OP_TYPE); }
- ;
- /* Expressions, including the sequencing operator. */
- exp1 : exp
- | exp1 ';' exp
- { write_exp_elt_opcode (BINOP_COMMA); }
- ;
- /* Expressions, not including the sequencing operator. */
- simple_exp : simple_exp DOT_ALL
- { write_exp_elt_opcode (UNOP_IND); }
- ;
- simple_exp : simple_exp DOT_ID
- { write_exp_elt_opcode (STRUCTOP_STRUCT);
- write_exp_string ($2.stoken);
- write_exp_elt_opcode (STRUCTOP_STRUCT);
- }
- ;
- simple_exp : simple_exp '(' arglist ')'
- {
- write_exp_elt_opcode (OP_FUNCALL);
- write_exp_elt_longcst ($3);
- write_exp_elt_opcode (OP_FUNCALL);
- }
- ;
- simple_exp : type '(' exp ')'
- {
- write_exp_elt_opcode (UNOP_CAST);
- write_exp_elt_type ($1);
- write_exp_elt_opcode (UNOP_CAST);
- }
- ;
- simple_exp : type '\'' save_qualifier { type_qualifier = $1; } '(' exp ')'
- {
- /* write_exp_elt_opcode (UNOP_QUAL); */
- /* FIXME: UNOP_QUAL should be defined in expression.h */
- write_exp_elt_type ($1);
- /* write_exp_elt_opcode (UNOP_QUAL); */
- /* FIXME: UNOP_QUAL should be defined in expression.h */
- type_qualifier = $3;
- }
- ;
- save_qualifier : { $$ = type_qualifier; }
- ;
- simple_exp :
- simple_exp '(' exp DOTDOT exp ')'
- { write_exp_elt_opcode (TERNOP_SLICE); }
- ;
- simple_exp : '(' exp1 ')' { }
- ;
- simple_exp : variable
- ;
- simple_exp: REGNAME /* GDB extension */
- { write_exp_elt_opcode (OP_REGISTER);
- write_exp_elt_longcst ((LONGEST) $1);
- write_exp_elt_opcode (OP_REGISTER);
- }
- ;
- simple_exp: INTERNAL_VARIABLE /* GDB extension */
- { write_exp_elt_opcode (OP_INTERNALVAR);
- write_exp_elt_intern ($1);
- write_exp_elt_opcode (OP_INTERNALVAR);
- }
- ;
- exp : simple_exp
- ;
- simple_exp: LAST
- { write_exp_elt_opcode (OP_LAST);
- write_exp_elt_longcst ((LONGEST) $1);
- write_exp_elt_opcode (OP_LAST);
- }
- ;
- exp : exp ASSIGN exp /* Extension for convenience */
- { write_exp_elt_opcode (BINOP_ASSIGN); }
- ;
- exp : '-' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_NEG); }
- ;
- exp : '+' exp %prec UNARY
- { write_exp_elt_opcode (UNOP_PLUS); }
- ;
- exp : NOT exp %prec UNARY
- { write_exp_elt_opcode (UNOP_LOGICAL_NOT); }
- ;
- exp : ABS exp %prec UNARY
- { write_exp_elt_opcode (UNOP_ABS); }
- ;
- arglist : { $$ = 0; }
- ;
- arglist : exp
- { $$ = 1; }
- | any_name ARROW exp
- { $$ = 1; }
- | arglist ',' exp
- { $$ = $1 + 1; }
- | arglist ',' any_name ARROW exp
- { $$ = $1 + 1; }
- ;
- exp : '{' type '}' exp %prec '.'
- /* GDB extension */
- { write_exp_elt_opcode (UNOP_MEMVAL);
- write_exp_elt_type ($2);
- write_exp_elt_opcode (UNOP_MEMVAL);
- }
- ;
- /* Binary operators in order of decreasing precedence. */
- exp : exp STARSTAR exp
- { write_exp_elt_opcode (BINOP_EXP); }
- ;
- exp : exp '*' exp
- { write_exp_elt_opcode (BINOP_MUL); }
- ;
- exp : exp '/' exp
- { write_exp_elt_opcode (BINOP_DIV); }
- ;
- exp : exp REM exp /* May need to be fixed to give correct Ada REM */
- { write_exp_elt_opcode (BINOP_REM); }
- ;
- exp : exp MOD exp
- { write_exp_elt_opcode (BINOP_MOD); }
- ;
- exp : exp '@' exp /* GDB extension */
- { write_exp_elt_opcode (BINOP_REPEAT); }
- ;
- exp : exp '+' exp
- { write_exp_elt_opcode (BINOP_ADD); }
- ;
- exp : exp '&' exp
- { write_exp_elt_opcode (BINOP_CONCAT); }
- ;
- exp : exp '-' exp
- { write_exp_elt_opcode (BINOP_SUB); }
- ;
- exp : exp '=' 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 IN exp DOTDOT exp
- { /*write_exp_elt_opcode (TERNOP_MBR); */ }
- /* FIXME: TERNOP_MBR should be defined in
- expression.h */
- | exp IN exp TICK_RANGE tick_arglist
- { /*write_exp_elt_opcode (BINOP_MBR); */
- /* FIXME: BINOP_MBR should be defined in expression.h */
- write_exp_elt_longcst ((LONGEST) $5);
- /*write_exp_elt_opcode (BINOP_MBR); */
- }
- | exp IN TYPENAME %prec TICK_ACCESS
- { /*write_exp_elt_opcode (UNOP_MBR); */
- /* FIXME: UNOP_QUAL should be defined in expression.h */
- write_exp_elt_type ($3);
- /* write_exp_elt_opcode (UNOP_MBR); */
- /* FIXME: UNOP_MBR should be defined in expression.h */
- }
- | exp NOT IN exp DOTDOT exp
- { /*write_exp_elt_opcode (TERNOP_MBR); */
- /* FIXME: TERNOP_MBR should be defined in expression.h */
- write_exp_elt_opcode (UNOP_LOGICAL_NOT);
- }
- | exp NOT IN exp TICK_RANGE tick_arglist
- { /* write_exp_elt_opcode (BINOP_MBR); */
- /* FIXME: BINOP_MBR should be defined in expression.h */
- write_exp_elt_longcst ((LONGEST) $6);
- /*write_exp_elt_opcode (BINOP_MBR);*/
- /* FIXME: BINOP_MBR should be defined in expression.h */
- write_exp_elt_opcode (UNOP_LOGICAL_NOT);
- }
- | exp NOT IN TYPENAME %prec TICK_ACCESS
- { /*write_exp_elt_opcode (UNOP_MBR);*/
- /* FIXME: UNOP_MBR should be defined in expression.h */
- write_exp_elt_type ($4);
- /* write_exp_elt_opcode (UNOP_MBR);*/
- /* FIXME: UNOP_MBR should be defined in expression.h */
- write_exp_elt_opcode (UNOP_LOGICAL_NOT);
- }
- ;
- 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 _AND_ exp /* Fix for Ada elementwise AND. */
- { write_exp_elt_opcode (BINOP_BITWISE_AND); }
- ;
- exp : exp _AND_ THEN exp %prec _AND_
- { write_exp_elt_opcode (BINOP_LOGICAL_AND); }
- ;
- exp : exp OR exp /* Fix for Ada elementwise OR */
- { write_exp_elt_opcode (BINOP_BITWISE_IOR); }
- ;
- exp : exp OR ELSE exp
- { write_exp_elt_opcode (BINOP_LOGICAL_OR); }
- ;
- exp : exp XOR exp /* Fix for Ada elementwise XOR */
- { write_exp_elt_opcode (BINOP_BITWISE_XOR); }
- ;
- simple_exp : simple_exp TICK_ACCESS
- { write_exp_elt_opcode (UNOP_ADDR); }
- | simple_exp TICK_ADDRESS
- { write_exp_elt_opcode (UNOP_ADDR);
- write_exp_elt_opcode (UNOP_CAST);
- write_exp_elt_type (builtin_type_ada_system_address);
- write_exp_elt_opcode (UNOP_CAST);
- }
- | simple_exp TICK_FIRST tick_arglist
- { write_attribute_call1 (ATR_FIRST, $3); }
- | simple_exp TICK_LAST tick_arglist
- { write_attribute_call1 (ATR_LAST, $3); }
- | simple_exp TICK_LENGTH tick_arglist
- { write_attribute_call1 (ATR_LENGTH, $3); }
- | simple_exp TICK_SIZE
- { write_attribute_call0 (ATR_SIZE); }
- | simple_exp TICK_TAG
- { write_attribute_call0 (ATR_TAG); }
- | opt_type_prefix TICK_MIN '(' exp ',' exp ')'
- { write_attribute_calln (ATR_MIN, 2); }
- | opt_type_prefix TICK_MAX '(' exp ',' exp ')'
- { write_attribute_calln (ATR_MAX, 2); }
- | opt_type_prefix TICK_POS '(' exp ')'
- { write_attribute_calln (ATR_POS, 1); }
- | type_prefix TICK_FIRST tick_arglist
- { write_attribute_call1 (ATR_FIRST, $3); }
- | type_prefix TICK_LAST tick_arglist
- { write_attribute_call1 (ATR_LAST, $3); }
- | type_prefix TICK_LENGTH tick_arglist
- { write_attribute_call1 (ATR_LENGTH, $3); }
- | type_prefix TICK_VAL '(' exp ')'
- { write_attribute_calln (ATR_VAL, 1); }
- | type_prefix TICK_MODULUS
- { write_attribute_call0 (ATR_MODULUS); }
- ;
- tick_arglist : %prec '('
- { $$ = 1; }
- | '(' INT ')'
- { $$ = $2.val; }
- ;
- type_prefix :
- TYPENAME
- { write_exp_elt_opcode (OP_TYPE);
- write_exp_elt_type ($1);
- write_exp_elt_opcode (OP_TYPE); }
- ;
- opt_type_prefix :
- type_prefix
- | /* EMPTY */
- { write_exp_elt_opcode (OP_TYPE);
- write_exp_elt_type (builtin_type_void);
- write_exp_elt_opcode (OP_TYPE); }
- ;
-
- 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 : CHARLIT
- { write_exp_elt_opcode (OP_LONG);
- if (type_qualifier == NULL)
- write_exp_elt_type ($1.type);
- else
- write_exp_elt_type (type_qualifier);
- write_exp_elt_longcst
- (convert_char_literal (type_qualifier, $1.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 : NULL_PTR
- { write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type_int);
- write_exp_elt_longcst ((LONGEST)(0));
- write_exp_elt_opcode (OP_LONG);
- }
- ;
- exp : STRING
- { /* Ada strings are converted into array constants
- a lower bound of 1. Thus, the array upper bound
- is the string length. */
- char *sp = $1.ptr; int count;
- if ($1.length == 0)
- { /* One dummy character for the type */
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type_ada_char);
- write_exp_elt_longcst ((LONGEST)(0));
- write_exp_elt_opcode (OP_LONG);
- }
- for (count = $1.length; count > 0; count -= 1)
- {
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type_ada_char);
- write_exp_elt_longcst ((LONGEST)(*sp));
- sp += 1;
- write_exp_elt_opcode (OP_LONG);
- }
- write_exp_elt_opcode (OP_ARRAY);
- write_exp_elt_longcst ((LONGEST) 1);
- write_exp_elt_longcst ((LONGEST) ($1.length));
- write_exp_elt_opcode (OP_ARRAY);
- }
- ;
- exp : NEW TYPENAME
- { error ("NEW not implemented."); }
- ;
- variable: NAME { write_var_from_name (NULL, $1); }
- | block NAME /* GDB extension */
- { write_var_from_name ($1, $2); }
- | OBJECT_RENAMING { write_object_renaming (NULL, $1.sym); }
- | block OBJECT_RENAMING
- { write_object_renaming ($1, $2.sym); }
- ;
- any_name : NAME { }
- | TYPENAME { }
- | OBJECT_RENAMING { }
- ;
- block : BLOCKNAME /* GDB extension */
- { $$ = $1; }
- | block BLOCKNAME /* GDB extension */
- { $$ = $2; }
- ;
- type : TYPENAME { $$ = $1; }
- | block TYPENAME { $$ = $2; }
- | TYPENAME TICK_ACCESS
- { $$ = lookup_pointer_type ($1); }
- | block TYPENAME TICK_ACCESS
- { $$ = lookup_pointer_type ($2); }
- ;
- /* Some extensions borrowed from C, for the benefit of those who find they
- can't get used to Ada notation in GDB. */
- exp : '*' exp %prec '.'
- { write_exp_elt_opcode (UNOP_IND); }
- | '&' exp %prec '.'
- { write_exp_elt_opcode (UNOP_ADDR); }
- | exp '[' exp ']'
- { write_exp_elt_opcode (BINOP_SUBSCRIPT); }
- ;
- %%
- /* yylex defined in ada-lex.c: Reads one token, getting characters */
- /* through lexptr. */
- /* Remap normal flex interface names (yylex) as well as gratuitiously */
- /* global symbol names, so we can have multiple flex-generated parsers */
- /* in gdb. */
- /* (See note above on previous definitions for YACC.) */
- #define yy_create_buffer ada_yy_create_buffer
- #define yy_delete_buffer ada_yy_delete_buffer
- #define yy_init_buffer ada_yy_init_buffer
- #define yy_load_buffer_state ada_yy_load_buffer_state
- #define yy_switch_to_buffer ada_yy_switch_to_buffer
- #define yyrestart ada_yyrestart
- #define yytext ada_yytext
- #define yywrap ada_yywrap
- /* The following kludge was found necessary to prevent conflicts between */
- /* defs.h and non-standard stdlib.h files. */
- #define qsort __qsort__dummy
- #include "ada-lex.c"
- int
- ada_parse ()
- {
- lexer_init (yyin); /* (Re-)initialize lexer. */
- left_block_context = NULL;
- type_qualifier = NULL;
-
- return _ada_parse ();
- }
- void
- yyerror (msg)
- char *msg;
- {
- error ("A %s in expression, near `%s'.", (msg ? msg : "error"), lexptr);
- }
- /* The operator name corresponding to operator symbol STRING (adds
- quotes and maps to lower-case). Destroys the previous contents of
- the array pointed to by STRING.ptr. Error if STRING does not match
- a valid Ada operator. Assumes that STRING.ptr points to a
- null-terminated string and that, if STRING is a valid operator
- symbol, the array pointed to by STRING.ptr contains at least
- STRING.length+3 characters. */
- static struct stoken
- string_to_operator (string)
- struct stoken string;
- {
- int i;
- for (i = 0; ada_opname_table[i].mangled != NULL; i += 1)
- {
- if (string.length == strlen (ada_opname_table[i].demangled)-2
- && strncasecmp (string.ptr, ada_opname_table[i].demangled+1,
- string.length) == 0)
- {
- strncpy (string.ptr, ada_opname_table[i].demangled,
- string.length+2);
- string.length += 2;
- return string;
- }
- }
- error ("Invalid operator symbol `%s'", string.ptr);
- }
- /* Emit expression to access an instance of SYM, in block BLOCK (if
- * non-NULL), and with :: qualification ORIG_LEFT_CONTEXT. */
- static void
- write_var_from_sym (orig_left_context, block, sym)
- struct block* orig_left_context;
- struct block* block;
- struct symbol* sym;
- {
- if (orig_left_context == NULL && symbol_read_needs_frame (sym))
- {
- if (innermost_block == 0 ||
- contained_in (block, innermost_block))
- innermost_block = block;
- }
- 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);
- }
- /* Emit expression to access an instance of NAME. */
- static void
- write_var_from_name (orig_left_context, name)
- struct block* orig_left_context;
- struct name_info name;
- {
- if (name.msym != NULL)
- {
- write_exp_msymbol (name.msym,
- lookup_function_type (builtin_type_int),
- builtin_type_int);
- }
- else if (name.sym == NULL)
- {
- /* Multiple matches: record name and starting block for later
- resolution by ada_resolve. */
- /* write_exp_elt_opcode (OP_UNRESOLVED_VALUE); */
- /* FIXME: OP_UNRESOLVED_VALUE should be defined in expression.h */
- write_exp_elt_block (name.block);
- /* write_exp_elt_name (name.stoken.ptr); */
- /* FIXME: write_exp_elt_name should be defined in defs.h, located in parse.c */
- /* write_exp_elt_opcode (OP_UNRESOLVED_VALUE); */
- /* FIXME: OP_UNRESOLVED_VALUE should be defined in expression.h */
- }
- else
- write_var_from_sym (orig_left_context, name.block, name.sym);
- }
- /* Write a call on parameterless attribute ATR. */
- static void
- write_attribute_call0 (atr)
- enum ada_attribute atr;
- {
- /* write_exp_elt_opcode (OP_ATTRIBUTE); */
- /* FIXME: OP_ATTRIBUTE should be defined in expression.h */
- write_exp_elt_longcst ((LONGEST) 0);
- write_exp_elt_longcst ((LONGEST) atr);
- /* write_exp_elt_opcode (OP_ATTRIBUTE); */
- /* FIXME: OP_ATTRIBUTE should be defined in expression.h */
- }
- /* Write a call on an attribute ATR with one constant integer
- * parameter. */
- static void
- write_attribute_call1 (atr, arg)
- enum ada_attribute atr;
- LONGEST arg;
- {
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type_int);
- write_exp_elt_longcst (arg);
- write_exp_elt_opcode (OP_LONG);
- /*write_exp_elt_opcode (OP_ATTRIBUTE);*/
- /* FIXME: OP_ATTRIBUTE should be defined in expression.h */
- write_exp_elt_longcst ((LONGEST) 1);
- write_exp_elt_longcst ((LONGEST) atr);
- /*write_exp_elt_opcode (OP_ATTRIBUTE);*/
- /* FIXME: OP_ATTRIBUTE should be defined in expression.h */
- }
- /* Write a call on an attribute ATR with N parameters, whose code must have
- * been generated previously. */
- static void
- write_attribute_calln (atr, n)
- enum ada_attribute atr;
- int n;
- {
- /*write_exp_elt_opcode (OP_ATTRIBUTE);*/
- /* FIXME: OP_ATTRIBUTE should be defined in expression.h */
- write_exp_elt_longcst ((LONGEST) n);
- write_exp_elt_longcst ((LONGEST) atr);
- /* write_exp_elt_opcode (OP_ATTRIBUTE);*/
- /* FIXME: OP_ATTRIBUTE should be defined in expression.h */
- }
- /* Emit expression corresponding to the renamed object designated by
- * the type RENAMING, which must be the referent of an object renaming
- * type, in the context of ORIG_LEFT_CONTEXT (?). */
- static void
- write_object_renaming (orig_left_context, renaming)
- struct block* orig_left_context;
- struct symbol* renaming;
- {
- const char* qualification = DEPRECATED_SYMBOL_NAME (renaming);
- const char* simple_tail;
- const char* expr = TYPE_FIELD_NAME (SYMBOL_TYPE (renaming), 0);
- const char* suffix;
- char* name;
- struct symbol* sym;
- enum { SIMPLE_INDEX, LOWER_BOUND, UPPER_BOUND } slice_state;
- /* if orig_left_context is null, then use the currently selected
- block, otherwise we might fail our symbol lookup below */
- if (orig_left_context == NULL)
- orig_left_context = get_selected_block (NULL);
- for (simple_tail = qualification + strlen (qualification);
- simple_tail != qualification; simple_tail -= 1)
- {
- if (*simple_tail == '.')
- {
- simple_tail += 1;
- break;
- }
- else if (DEPRECATED_STREQN (simple_tail, "__", 2))
- {
- simple_tail += 2;
- break;
- }
- }
- suffix = strstr (expr, "___XE");
- if (suffix == NULL)
- goto BadEncoding;
- name = (char*) malloc (suffix - expr + 1);
- /* add_name_string_cleanup (name); */
- /* FIXME: add_name_string_cleanup should be defined in
- parser-defs.h, implemented in parse.c */
- strncpy (name, expr, suffix-expr);
- name[suffix-expr] = '\000';
- sym = lookup_symbol (name, orig_left_context, VAR_DOMAIN, 0, NULL);
- /* if (sym == NULL)
- error ("Could not find renamed variable: %s", ada_demangle (name));
- */
- /* FIXME: ada_demangle should be defined in defs.h, implemented in ada-lang.c */
- write_var_from_sym (orig_left_context, block_found, sym);
- suffix += 5;
- slice_state = SIMPLE_INDEX;
- while (*suffix == 'X')
- {
- suffix += 1;
- switch (*suffix) {
- case 'L':
- slice_state = LOWER_BOUND;
- case 'S':
- suffix += 1;
- if (isdigit (*suffix))
- {
- char* next;
- long val = strtol (suffix, &next, 10);
- if (next == suffix)
- goto BadEncoding;
- suffix = next;
- write_exp_elt_opcode (OP_LONG);
- write_exp_elt_type (builtin_type_ada_int);
- write_exp_elt_longcst ((LONGEST) val);
- write_exp_elt_opcode (OP_LONG);
- }
- else
- {
- const char* end;
- char* index_name;
- int index_len;
- struct symbol* index_sym;
- end = strchr (suffix, 'X');
- if (end == NULL)
- end = suffix + strlen (suffix);
-
- index_len = simple_tail - qualification + 2 + (suffix - end) + 1;
- index_name = (char*) malloc (index_len);
- memset (index_name, '\000', index_len);
- /* add_name_string_cleanup (index_name);*/
- /* FIXME: add_name_string_cleanup should be defined in
- parser-defs.h, implemented in parse.c */
- strncpy (index_name, qualification, simple_tail - qualification);
- index_name[simple_tail - qualification] = '\000';
- strncat (index_name, suffix, suffix-end);
- suffix = end;
- index_sym =
- lookup_symbol (index_name, NULL, VAR_DOMAIN, 0, NULL);
- if (index_sym == NULL)
- error ("Could not find %s", index_name);
- write_var_from_sym (NULL, block_found, sym);
- }
- if (slice_state == SIMPLE_INDEX)
- {
- write_exp_elt_opcode (OP_FUNCALL);
- write_exp_elt_longcst ((LONGEST) 1);
- write_exp_elt_opcode (OP_FUNCALL);
- }
- else if (slice_state == LOWER_BOUND)
- slice_state = UPPER_BOUND;
- else if (slice_state == UPPER_BOUND)
- {
- write_exp_elt_opcode (TERNOP_SLICE);
- slice_state = SIMPLE_INDEX;
- }
- break;
- case 'R':
- {
- struct stoken field_name;
- const char* end;
- suffix += 1;
-
- if (slice_state != SIMPLE_INDEX)
- goto BadEncoding;
- end = strchr (suffix, 'X');
- if (end == NULL)
- end = suffix + strlen (suffix);
- field_name.length = end - suffix;
- field_name.ptr = (char*) malloc (end - suffix + 1);
- strncpy (field_name.ptr, suffix, end - suffix);
- field_name.ptr[end - suffix] = '\000';
- suffix = end;
- write_exp_elt_opcode (STRUCTOP_STRUCT);
- write_exp_string (field_name);
- write_exp_elt_opcode (STRUCTOP_STRUCT);
- break;
- }
-
- default:
- goto BadEncoding;
- }
- }
- if (slice_state == SIMPLE_INDEX)
- return;
- BadEncoding:
- error ("Internal error in encoding of renaming declaration: %s",
- DEPRECATED_SYMBOL_NAME (renaming));
- }
- /* Convert the character literal whose ASCII value would be VAL to the
- appropriate value of type TYPE, if there is a translation.
- Otherwise return VAL. Hence, in an enumeration type ('A', 'B'),
- the literal 'A' (VAL == 65), returns 0. */
- static LONGEST
- convert_char_literal (struct type* type, LONGEST val)
- {
- char name[7];
- int f;
- if (type == NULL || TYPE_CODE (type) != TYPE_CODE_ENUM)
- return val;
- sprintf (name, "QU%02x", (int) val);
- for (f = 0; f < TYPE_NFIELDS (type); f += 1)
- {
- if (DEPRECATED_STREQ (name, TYPE_FIELD_NAME (type, f)))
- return TYPE_FIELD_BITPOS (type, f);
- }
- return val;
- }
- </pre>
- <hr />
- </body></html>