/* YACC grammar for Modula-2 expressions, for GDB.
- Copyright (C) 1986-2019 Free Software Foundation, Inc.
+ Copyright (C) 1986-2021 Free Software Foundation, Inc.
Generated from expread.y (now c-exp.y) and contributed by the Department
of Computer Science at the State University of New York at Buffalo, 1991.
#include "symfile.h" /* Required by objfiles.h. */
#include "objfiles.h" /* For have_full_symbols and have_partial_symbols */
#include "block.h"
+#include "m2-exp.h"
#define parse_type(ps) builtin_type (ps->gdbarch ())
#define parse_m2_type(ps) builtin_m2_type (ps->gdbarch ())
/* The sign of the number being parsed. */
static int number_sign = 1;
+using namespace expr;
%}
/* Although the yacc "value" of an expression is not used,
/* The GDB scope operator */
%token COLONCOLON
-%token <voidval> DOLLAR_VARIABLE
+%token <sval> DOLLAR_VARIABLE
/* M2 tokens */
%left ','
;
type_exp: type
- { write_exp_elt_opcode (pstate, OP_TYPE);
- write_exp_elt_type (pstate, $1);
- write_exp_elt_opcode (pstate, OP_TYPE);
- }
+ { pstate->push_new<type_operation> ($1); }
;
/* Expressions */
exp : exp '^' %prec UNARY
- { write_exp_elt_opcode (pstate, UNOP_IND); }
+ { pstate->wrap<unop_ind_operation> (); }
;
exp : '-'
{ number_sign = -1; }
exp %prec UNARY
{ number_sign = 1;
- write_exp_elt_opcode (pstate, UNOP_NEG); }
+ pstate->wrap<unary_neg_operation> (); }
;
exp : '+' exp %prec UNARY
- { write_exp_elt_opcode (pstate, UNOP_PLUS); }
+ { pstate->wrap<unary_plus_operation> (); }
;
exp : not_exp exp %prec UNARY
- { write_exp_elt_opcode (pstate, UNOP_LOGICAL_NOT); }
+ { pstate->wrap<unary_logical_not_operation> (); }
;
not_exp : NOT
;
exp : CAP '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_CAP); }
+ { error (_("CAP function is not implemented")); }
;
exp : ORD '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_ORD); }
+ { error (_("ORD function is not implemented")); }
;
exp : ABS '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_ABS); }
+ { error (_("ABS function is not implemented")); }
;
exp : HIGH '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_HIGH); }
+ { pstate->wrap<m2_unop_high_operation> (); }
;
exp : MIN_FUNC '(' type ')'
- { write_exp_elt_opcode (pstate, UNOP_MIN);
- write_exp_elt_type (pstate, $3);
- write_exp_elt_opcode (pstate, UNOP_MIN); }
+ { error (_("MIN function is not implemented")); }
;
exp : MAX_FUNC '(' type ')'
- { write_exp_elt_opcode (pstate, UNOP_MAX);
- write_exp_elt_type (pstate, $3);
- write_exp_elt_opcode (pstate, UNOP_MAX); }
+ { error (_("MAX function is not implemented")); }
;
exp : FLOAT_FUNC '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_FLOAT); }
+ { error (_("FLOAT function is not implemented")); }
;
exp : VAL '(' type ',' exp ')'
- { write_exp_elt_opcode (pstate, BINOP_VAL);
- write_exp_elt_type (pstate, $3);
- write_exp_elt_opcode (pstate, BINOP_VAL); }
+ { error (_("VAL function is not implemented")); }
;
exp : CHR '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_CHR); }
+ { error (_("CHR function is not implemented")); }
;
exp : ODD '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_ODD); }
+ { error (_("ODD function is not implemented")); }
;
exp : TRUNC '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_TRUNC); }
+ { error (_("TRUNC function is not implemented")); }
;
exp : TSIZE '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_SIZEOF); }
+ { pstate->wrap<unop_sizeof_operation> (); }
;
exp : SIZE exp %prec UNARY
- { write_exp_elt_opcode (pstate, UNOP_SIZEOF); }
+ { pstate->wrap<unop_sizeof_operation> (); }
;
exp : INC '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_PREINCREMENT); }
+ { pstate->wrap<preinc_operation> (); }
;
exp : INC '(' exp ',' exp ')'
- { write_exp_elt_opcode (pstate, BINOP_ASSIGN_MODIFY);
- write_exp_elt_opcode (pstate, BINOP_ADD);
- write_exp_elt_opcode (pstate,
- BINOP_ASSIGN_MODIFY); }
+ {
+ operation_up rhs = pstate->pop ();
+ operation_up lhs = pstate->pop ();
+ pstate->push_new<assign_modify_operation>
+ (BINOP_ADD, std::move (lhs), std::move (rhs));
+ }
;
exp : DEC '(' exp ')'
- { write_exp_elt_opcode (pstate, UNOP_PREDECREMENT);}
+ { pstate->wrap<predec_operation> (); }
;
exp : DEC '(' exp ',' exp ')'
- { write_exp_elt_opcode (pstate, BINOP_ASSIGN_MODIFY);
- write_exp_elt_opcode (pstate, BINOP_SUB);
- write_exp_elt_opcode (pstate,
- BINOP_ASSIGN_MODIFY); }
+ {
+ operation_up rhs = pstate->pop ();
+ operation_up lhs = pstate->pop ();
+ pstate->push_new<assign_modify_operation>
+ (BINOP_SUB, std::move (lhs), std::move (rhs));
+ }
;
exp : exp DOT NAME
- { write_exp_elt_opcode (pstate, STRUCTOP_STRUCT);
- write_exp_string (pstate, $3);
- write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); }
- ;
+ {
+ pstate->push_new<structop_operation>
+ (pstate->pop (), copy_name ($3));
+ }
+;
exp : set
;
;
-/* Modula-2 array subscript notation [a,b,c...] */
+/* Modula-2 array subscript notation [a,b,c...]. */
exp : exp '['
- /* This function just saves the number of arguments
+ /* This function just saves the number of arguments
that follow in the list. It is *not* specific to
function types */
- { pstate->start_arglist(); }
- non_empty_arglist ']' %prec DOT
- { write_exp_elt_opcode (pstate, MULTI_SUBSCRIPT);
- write_exp_elt_longcst (pstate,
- pstate->end_arglist());
- write_exp_elt_opcode (pstate, MULTI_SUBSCRIPT); }
- ;
-
-exp : exp '[' exp ']'
- { write_exp_elt_opcode (pstate, BINOP_SUBSCRIPT); }
+ { pstate->start_arglist(); }
+ non_empty_arglist ']' %prec DOT
+ {
+ gdb_assert (pstate->arglist_len > 0);
+ std::vector<operation_up> args
+ = pstate->pop_vector (pstate->end_arglist ());
+ pstate->push_new<multi_subscript_operation>
+ (pstate->pop (), std::move (args));
+ }
;
exp : exp '('
being accumulated by an outer function call. */
{ pstate->start_arglist (); }
arglist ')' %prec DOT
- { write_exp_elt_opcode (pstate, OP_FUNCALL);
- write_exp_elt_longcst (pstate,
- pstate->end_arglist ());
- write_exp_elt_opcode (pstate, OP_FUNCALL); }
+ {
+ std::vector<operation_up> args
+ = pstate->pop_vector (pstate->end_arglist ());
+ pstate->push_new<funcall_operation>
+ (pstate->pop (), std::move (args));
+ }
;
arglist :
;
non_empty_arglist
- : exp
- { pstate->arglist_len = 1; }
+ : exp
+ { pstate->arglist_len = 1; }
;
non_empty_arglist
- : non_empty_arglist ',' exp %prec ABOVE_COMMA
+ : non_empty_arglist ',' exp %prec ABOVE_COMMA
{ pstate->arglist_len++; }
;
/* GDB construct */
exp : '{' type '}' exp %prec UNARY
- { write_exp_elt_opcode (pstate, UNOP_MEMVAL);
- write_exp_elt_type (pstate, $2);
- write_exp_elt_opcode (pstate, UNOP_MEMVAL); }
+ {
+ pstate->push_new<unop_memval_operation>
+ (pstate->pop (), $2);
+ }
;
exp : type '(' exp ')' %prec UNARY
- { write_exp_elt_opcode (pstate, UNOP_CAST);
- write_exp_elt_type (pstate, $1);
- write_exp_elt_opcode (pstate, UNOP_CAST); }
+ {
+ pstate->push_new<unop_cast_operation>
+ (pstate->pop (), $1);
+ }
;
exp : '(' exp ')'
/* GDB construct */
exp : exp '@' exp
- { write_exp_elt_opcode (pstate, BINOP_REPEAT); }
+ { pstate->wrap2<repeat_operation> (); }
;
exp : exp '*' exp
- { write_exp_elt_opcode (pstate, BINOP_MUL); }
+ { pstate->wrap2<mul_operation> (); }
;
exp : exp '/' exp
- { write_exp_elt_opcode (pstate, BINOP_DIV); }
+ { pstate->wrap2<div_operation> (); }
;
exp : exp DIV exp
- { write_exp_elt_opcode (pstate, BINOP_INTDIV); }
- ;
+ { pstate->wrap2<intdiv_operation> (); }
+ ;
exp : exp MOD exp
- { write_exp_elt_opcode (pstate, BINOP_REM); }
+ { pstate->wrap2<rem_operation> (); }
;
exp : exp '+' exp
- { write_exp_elt_opcode (pstate, BINOP_ADD); }
+ { pstate->wrap2<add_operation> (); }
;
exp : exp '-' exp
- { write_exp_elt_opcode (pstate, BINOP_SUB); }
+ { pstate->wrap2<sub_operation> (); }
;
exp : exp '=' exp
- { write_exp_elt_opcode (pstate, BINOP_EQUAL); }
+ { pstate->wrap2<equal_operation> (); }
;
exp : exp NOTEQUAL exp
- { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); }
- | exp '#' exp
- { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); }
+ { pstate->wrap2<notequal_operation> (); }
+ | exp '#' exp
+ { pstate->wrap2<notequal_operation> (); }
;
exp : exp LEQ exp
- { write_exp_elt_opcode (pstate, BINOP_LEQ); }
+ { pstate->wrap2<leq_operation> (); }
;
exp : exp GEQ exp
- { write_exp_elt_opcode (pstate, BINOP_GEQ); }
+ { pstate->wrap2<geq_operation> (); }
;
exp : exp '<' exp
- { write_exp_elt_opcode (pstate, BINOP_LESS); }
+ { pstate->wrap2<less_operation> (); }
;
exp : exp '>' exp
- { write_exp_elt_opcode (pstate, BINOP_GTR); }
+ { pstate->wrap2<gtr_operation> (); }
;
exp : exp LOGICAL_AND exp
- { write_exp_elt_opcode (pstate, BINOP_LOGICAL_AND); }
+ { pstate->wrap2<logical_and_operation> (); }
;
exp : exp OROR exp
- { write_exp_elt_opcode (pstate, BINOP_LOGICAL_OR); }
+ { pstate->wrap2<logical_or_operation> (); }
;
exp : exp ASSIGN exp
- { write_exp_elt_opcode (pstate, BINOP_ASSIGN); }
+ { pstate->wrap2<assign_operation> (); }
;
/* Constants */
exp : M2_TRUE
- { write_exp_elt_opcode (pstate, OP_BOOL);
- write_exp_elt_longcst (pstate, (LONGEST) $1);
- write_exp_elt_opcode (pstate, OP_BOOL); }
+ { pstate->push_new<bool_operation> ($1); }
;
exp : M2_FALSE
- { write_exp_elt_opcode (pstate, OP_BOOL);
- write_exp_elt_longcst (pstate, (LONGEST) $1);
- write_exp_elt_opcode (pstate, OP_BOOL); }
+ { pstate->push_new<bool_operation> ($1); }
;
exp : INT
- { write_exp_elt_opcode (pstate, OP_LONG);
- write_exp_elt_type (pstate,
- parse_m2_type (pstate)->builtin_int);
- write_exp_elt_longcst (pstate, (LONGEST) $1);
- write_exp_elt_opcode (pstate, OP_LONG); }
+ {
+ pstate->push_new<long_const_operation>
+ (parse_m2_type (pstate)->builtin_int, $1);
+ }
;
exp : UINT
{
- write_exp_elt_opcode (pstate, OP_LONG);
- write_exp_elt_type (pstate,
- parse_m2_type (pstate)
- ->builtin_card);
- write_exp_elt_longcst (pstate, (LONGEST) $1);
- write_exp_elt_opcode (pstate, OP_LONG);
+ pstate->push_new<long_const_operation>
+ (parse_m2_type (pstate)->builtin_card, $1);
}
;
exp : CHAR
- { write_exp_elt_opcode (pstate, OP_LONG);
- write_exp_elt_type (pstate,
- parse_m2_type (pstate)
- ->builtin_char);
- write_exp_elt_longcst (pstate, (LONGEST) $1);
- write_exp_elt_opcode (pstate, OP_LONG); }
+ {
+ pstate->push_new<long_const_operation>
+ (parse_m2_type (pstate)->builtin_char, $1);
+ }
;
exp : FLOAT
- { write_exp_elt_opcode (pstate, OP_FLOAT);
- write_exp_elt_type (pstate,
- parse_m2_type (pstate)
- ->builtin_real);
- write_exp_elt_floatcst (pstate, $1);
- write_exp_elt_opcode (pstate, OP_FLOAT); }
+ {
+ float_data data;
+ std::copy (std::begin ($1), std::end ($1),
+ std::begin (data));
+ pstate->push_new<float_const_operation>
+ (parse_m2_type (pstate)->builtin_real, data);
+ }
;
exp : variable
;
exp : SIZE '(' type ')' %prec UNARY
- { write_exp_elt_opcode (pstate, OP_LONG);
- write_exp_elt_type (pstate,
- parse_type (pstate)->builtin_int);
- write_exp_elt_longcst (pstate,
- (LONGEST) TYPE_LENGTH ($3));
- write_exp_elt_opcode (pstate, OP_LONG); }
+ {
+ pstate->push_new<long_const_operation>
+ (parse_m2_type (pstate)->builtin_int,
+ TYPE_LENGTH ($3));
+ }
;
exp : STRING
- { write_exp_elt_opcode (pstate, OP_M2_STRING);
- write_exp_string (pstate, $1);
- write_exp_elt_opcode (pstate, OP_M2_STRING); }
+ { error (_("strings are not implemented")); }
;
/* This will be used for extensions later. Like adding modules. */
/* Useful for assigning to PROCEDURE variables */
variable: fblock
- { write_exp_elt_opcode (pstate, OP_VAR_VALUE);
- write_exp_elt_block (pstate, NULL);
- write_exp_elt_sym (pstate, $1);
- write_exp_elt_opcode (pstate, OP_VAR_VALUE); }
+ {
+ block_symbol sym { $1, nullptr };
+ pstate->push_new<var_value_operation> (sym);
+ }
;
/* GDB internal ($foo) variable */
variable: DOLLAR_VARIABLE
+ { pstate->push_dollar ($1); }
;
/* GDB scope operator */
if (symbol_read_needs_frame (sym.symbol))
pstate->block_tracker->update (sym);
- write_exp_elt_opcode (pstate, OP_VAR_VALUE);
- write_exp_elt_block (pstate, sym.block);
- write_exp_elt_sym (pstate, sym.symbol);
- write_exp_elt_opcode (pstate, OP_VAR_VALUE); }
+ pstate->push_new<var_value_operation> (sym);
+ }
;
/* Base case for variables. */
{ struct block_symbol sym;
struct field_of_this_result is_a_field_of_this;
+ std::string name = copy_name ($1);
sym
- = lookup_symbol (copy_name ($1).c_str (),
+ = lookup_symbol (name.c_str (),
pstate->expression_context_block,
VAR_DOMAIN,
&is_a_field_of_this);
- if (sym.symbol)
- {
- if (symbol_read_needs_frame (sym.symbol))
- pstate->block_tracker->update (sym);
-
- write_exp_elt_opcode (pstate, OP_VAR_VALUE);
- write_exp_elt_block (pstate, sym.block);
- write_exp_elt_sym (pstate, sym.symbol);
- write_exp_elt_opcode (pstate, OP_VAR_VALUE);
- }
- else
- {
- struct bound_minimal_symbol msymbol;
- std::string arg = copy_name ($1);
-
- msymbol =
- lookup_bound_minimal_symbol (arg.c_str ());
- if (msymbol.minsym != NULL)
- write_exp_msymbol (pstate, msymbol);
- else if (!have_full_symbols () && !have_partial_symbols ())
- error (_("No symbol table is loaded. Use the \"symbol-file\" command."));
- else
- error (_("No symbol \"%s\" in current context."),
- arg.c_str ());
- }
+ pstate->push_symbol (name.c_str (), sym);
}
;
break;
}
toktype = parse_number (p - tokstart);
- if (toktype == ERROR)
+ if (toktype == ERROR)
{
char *err_copy = (char *) alloca (p - tokstart + 1);
yylval.sval.length = namelen;
if (*tokstart == '$')
- {
- write_dollar_variable (pstate, yylval.sval);
- return DOLLAR_VARIABLE;
- }
+ return DOLLAR_VARIABLE;
/* Use token-type BLOCKNAME for symbols that happen to be defined as
functions. If this is not so, then ...
else
{
/* Built-in BOOLEAN type. This is sort of a hack. */
- if (strncmp (tokstart, "TRUE", 4) == 0)
+ if (startswith (tokstart, "TRUE"))
{
yylval.ulval = 1;
return M2_TRUE;
}
- else if (strncmp (tokstart, "FALSE", 5) == 0)
+ else if (startswith (tokstart, "FALSE"))
{
yylval.ulval = 0;
return M2_FALSE;
}
int
-m2_parse (struct parser_state *par_state)
+m2_language::parser (struct parser_state *par_state) const
{
/* Setting up the parser state. */
scoped_restore pstate_restore = make_scoped_restore (&pstate);
pstate = par_state;
paren_depth = 0;
- return yyparse ();
+ int result = yyparse ();
+ if (!result)
+ pstate->set_operation (pstate->pop ());
+ return result;
}
static void
projects / thirdparty / binutils-gdb.git / blobdiff