]> git.ipfire.org Git - thirdparty/binutils-gdb.git/blobdiff - gdb/p-exp.y
Fix powerpc-power8.exp test with new mnemonics
[thirdparty/binutils-gdb.git] / gdb / p-exp.y
index ec656d0932ea51380aadb564a5644928b1d2f14d..f496ce2016e5ac78b5264c2d603dc2e707ca760a 100644 (file)
@@ -1,6 +1,5 @@
 /* YACC parser for Pascal expressions, for GDB.
-   Copyright (C) 2000, 2006, 2007, 2008, 2009, 2010, 2011
-   Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -45,7 +44,6 @@
 %{
 
 #include "defs.h"
-#include "gdb_string.h"
 #include <ctype.h>
 #include "expression.h"
 #include "value.h"
 #include "symfile.h" /* Required by objfiles.h.  */
 #include "objfiles.h" /* For have_full_symbols and have_partial_symbols.  */
 #include "block.h"
+#include "completer.h"
+#include "expop.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 pascal_maxdepth
-#define        yyparse pascal_parse
-#define        yylex   pascal_lex
-#define        yyerror pascal_error
-#define        yylval  pascal_lval
-#define        yychar  pascal_char
-#define        yydebug pascal_debug
-#define        yypact  pascal_pact     
-#define        yyr1    pascal_r1                       
-#define        yyr2    pascal_r2                       
-#define        yydef   pascal_def              
-#define        yychk   pascal_chk              
-#define        yypgo   pascal_pgo              
-#define        yyact   pascal_act
-#define        yyexca  pascal_exca
-#define yyerrflag pascal_errflag
-#define yynerrs        pascal_nerrs
-#define        yyps    pascal_ps
-#define        yypv    pascal_pv
-#define        yys     pascal_s
-#define        yy_yys  pascal_yys
-#define        yystate pascal_state
-#define        yytmp   pascal_tmp
-#define        yyv     pascal_v
-#define        yy_yyv  pascal_yyv
-#define        yyval   pascal_val
-#define        yylloc  pascal_lloc
-#define yyreds pascal_reds             /* With YYDEBUG defined */
-#define yytoks pascal_toks             /* With YYDEBUG defined */
-#define yyname pascal_name             /* With YYDEBUG defined */
-#define yyrule pascal_rule             /* With YYDEBUG defined */
-#define yylhs  pascal_yylhs
-#define yylen  pascal_yylen
-#define yydefred pascal_yydefred
-#define yydgoto        pascal_yydgoto
-#define yysindex pascal_yysindex
-#define yyrindex pascal_yyrindex
-#define yygindex pascal_yygindex
-#define yytable         pascal_yytable
-#define yycheck         pascal_yycheck
-
-#ifndef YYDEBUG
-#define        YYDEBUG 1               /* Default to yydebug support */
-#endif
-
-#define YYFPRINTF parser_fprintf
+#define parse_type(ps) builtin_type (ps->gdbarch ())
+
+/* Remap normal yacc parser interface names (yyparse, yylex, yyerror,
+   etc).  */
+#define GDB_YY_REMAP_PREFIX pascal_
+#include "yy-remap.h"
+
+/* The state of the parser, used internally when we are parsing the
+   expression.  */
+
+static struct parser_state *pstate = NULL;
+
+/* Depth of parentheses.  */
+static int paren_depth;
 
 int yyparse (void);
 
 static int yylex (void);
 
-void
-yyerror (char *);
+static void yyerror (const char *);
+
+static char *uptok (const char *, int);
 
-static char * uptok (char *, int);
+using namespace expr;
 %}
 
 /* Although the yacc "value" of an expression is not used,
@@ -135,7 +95,7 @@ static char * uptok (char *, int);
       struct type *type;
     } typed_val_int;
     struct {
-      DOUBLEST dval;
+      gdb_byte val[16];
       struct type *type;
     } typed_val_float;
     struct symbol *sym;
@@ -144,7 +104,7 @@ static char * uptok (char *, int);
     struct ttype tsym;
     struct symtoken ssym;
     int voidval;
-    struct block *bval;
+    const struct block *bval;
     enum exp_opcode opcode;
     struct internalvar *ivar;
 
@@ -154,11 +114,10 @@ static char * uptok (char *, int);
 
 %{
 /* YYSTYPE gets defined by %union */
-static int
-parse_number (char *, int, int, YYSTYPE *);
+static int parse_number (struct parser_state *,
+                        const char *, int, int, YYSTYPE *);
 
 static struct type *current_type;
-static struct internalvar *intvar;
 static int leftdiv_is_integer;
 static void push_current_type (void);
 static void pop_current_type (void);
@@ -183,7 +142,7 @@ static int search_field;
    Contexts where this distinction is not important can use the
    nonterminal "name", which matches either NAME or TYPENAME.  */
 
-%token <sval> STRING 
+%token <sval> STRING
 %token <sval> FIELDNAME
 %token <voidval> COMPLETE
 %token <ssym> NAME /* BLOCKNAME defined below to give it higher precedence.  */
@@ -204,7 +163,7 @@ static int search_field;
 /* Special type cases, put in to allow the parser to distinguish different
    legal basetypes.  */
 
-%token <voidval> VARIABLE
+%token <sval> DOLLAR_VARIABLE
 
 
 /* Object pascal */
@@ -235,7 +194,6 @@ static int search_field;
 %%
 
 start   :      { current_type = NULL;
-                 intvar = NULL;
                  search_field = 0;
                  leftdiv_is_integer = 0;
                }
@@ -248,59 +206,58 @@ normal_start      :
        ;
 
 type_exp:      type
-                       { write_exp_elt_opcode(OP_TYPE);
-                         write_exp_elt_type($1);
-                         write_exp_elt_opcode(OP_TYPE);
+                       {
+                         pstate->push_new<type_operation> ($1);
                          current_type = $1; } ;
 
 /* Expressions, including the comma operator.  */
 exp1   :       exp
        |       exp1 ',' exp
-                       { write_exp_elt_opcode (BINOP_COMMA); }
+                       { pstate->wrap2<comma_operation> (); }
        ;
 
 /* Expressions, not including the comma operator.  */
 exp    :       exp '^'   %prec UNARY
-                       { write_exp_elt_opcode (UNOP_IND);
-                         if (current_type) 
+                       { pstate->wrap<unop_ind_operation> ();
+                         if (current_type)
                            current_type = TYPE_TARGET_TYPE (current_type); }
        ;
 
 exp    :       '@' exp    %prec UNARY
-                       { write_exp_elt_opcode (UNOP_ADDR); 
+                       { pstate->wrap<unop_addr_operation> ();
                          if (current_type)
                            current_type = TYPE_POINTER_TYPE (current_type); }
        ;
 
 exp    :       '-' exp    %prec UNARY
-                       { write_exp_elt_opcode (UNOP_NEG); }
+                       { pstate->wrap<unary_neg_operation> (); }
        ;
 
 exp    :       NOT exp    %prec UNARY
-                       { write_exp_elt_opcode (UNOP_LOGICAL_NOT); }
+                       { pstate->wrap<unary_logical_not_operation> (); }
        ;
 
 exp    :       INCREMENT '(' exp ')'   %prec UNARY
-                       { write_exp_elt_opcode (UNOP_PREINCREMENT); }
+                       { pstate->wrap<preinc_operation> (); }
        ;
 
 exp    :       DECREMENT  '(' exp ')'   %prec UNARY
-                       { write_exp_elt_opcode (UNOP_PREDECREMENT); }
+                       { pstate->wrap<predec_operation> (); }
        ;
 
 
 field_exp      :       exp '.' %prec UNARY
-                       { search_field = 1; } 
+                       { search_field = 1; }
        ;
 
-exp    :       field_exp FIELDNAME 
-                       { write_exp_elt_opcode (STRUCTOP_STRUCT);
-                         write_exp_string ($2); 
-                         write_exp_elt_opcode (STRUCTOP_STRUCT);
-                         search_field = 0; 
+exp    :       field_exp FIELDNAME
+                       {
+                         pstate->push_new<structop_operation>
+                           (pstate->pop (), copy_name ($2));
+                         search_field = 0;
                          if (current_type)
-                           { 
-                             while (TYPE_CODE (current_type)
+                           {
+                             while (current_type->code ()
                                     == TYPE_CODE_PTR)
                                current_type =
                                  TYPE_TARGET_TYPE (current_type);
@@ -308,17 +265,17 @@ exp       :       field_exp FIELDNAME
                                current_type, $2.ptr, 0);
                            }
                         }
-       ; 
+       ;
+
 
 exp    :       field_exp name
-                       { mark_struct_expression ();
-                         write_exp_elt_opcode (STRUCTOP_STRUCT);
-                         write_exp_string ($2);
-                         write_exp_elt_opcode (STRUCTOP_STRUCT);
-                         search_field = 0; 
+                       {
+                         pstate->push_new<structop_operation>
+                           (pstate->pop (), copy_name ($2));
+                         search_field = 0;
                          if (current_type)
-                           { 
-                             while (TYPE_CODE (current_type)
+                           {
+                             while (current_type->code ()
                                     == TYPE_CODE_PTR)
                                current_type =
                                  TYPE_TARGET_TYPE (current_type);
@@ -327,40 +284,42 @@ exp       :       field_exp name
                            }
                        }
        ;
-
+exp    :       field_exp  name COMPLETE
+                       {
+                         structop_base_operation *op
+                           = new structop_ptr_operation (pstate->pop (),
+                                                         copy_name ($2));
+                         pstate->mark_struct_expression (op);
+                         pstate->push (operation_up (op));
+                       }
+       ;
 exp    :       field_exp COMPLETE
-                       { struct stoken s;
-                         mark_struct_expression ();
-                         write_exp_elt_opcode (STRUCTOP_STRUCT);
-                         s.ptr = "";
-                         s.length = 0;
-                         write_exp_string (s);
-                         write_exp_elt_opcode (STRUCTOP_STRUCT); }
+                       {
+                         structop_base_operation *op
+                           = new structop_ptr_operation (pstate->pop (), "");
+                         pstate->mark_struct_expression (op);
+                         pstate->push (operation_up (op));
+                       }
        ;
 
 exp    :       exp '['
                        /* We need to save the current_type value.  */
-                       { char *arrayname; 
-                         int arrayfieldindex;
-                         arrayfieldindex = is_pascal_string_type (
-                               current_type, NULL, NULL,
-                               NULL, NULL, &arrayname); 
-                         if (arrayfieldindex) 
+                       { const char *arrayname;
+                         int arrayfieldindex
+                           = pascal_is_string_type (current_type, NULL, NULL,
+                                                    NULL, NULL, &arrayname);
+                         if (arrayfieldindex)
                            {
-                             struct stoken stringsval;
-                             stringsval.ptr = alloca (strlen (arrayname) + 1);
-                             stringsval.length = strlen (arrayname);
-                             strcpy (stringsval.ptr, arrayname);
-                             current_type = TYPE_FIELD_TYPE (current_type,
-                               arrayfieldindex - 1); 
-                             write_exp_elt_opcode (STRUCTOP_STRUCT);
-                             write_exp_string (stringsval); 
-                             write_exp_elt_opcode (STRUCTOP_STRUCT);
+                             current_type
+                               = (current_type
+                                  ->field (arrayfieldindex - 1).type ());
+                             pstate->push_new<structop_operation>
+                               (pstate->pop (), arrayname);
                            }
                          push_current_type ();  }
                exp1 ']'
                        { pop_current_type ();
-                         write_exp_elt_opcode (BINOP_SUBSCRIPT);
+                         pstate->wrap2<subscript_operation> ();
                          if (current_type)
                            current_type = TYPE_TARGET_TYPE (current_type); }
        ;
@@ -369,11 +328,13 @@ exp       :       exp '('
                        /* This is to save the value of arglist_len
                           being accumulated by an outer function call.  */
                        { push_current_type ();
-                         start_arglist (); }
+                         pstate->start_arglist (); }
                arglist ')'     %prec ARROW
-                       { write_exp_elt_opcode (OP_FUNCALL);
-                         write_exp_elt_longcst ((LONGEST) end_arglist ());
-                         write_exp_elt_opcode (OP_FUNCALL); 
+                       {
+                         std::vector<operation_up> args
+                           = pstate->pop_vector (pstate->end_arglist ());
+                         pstate->push_new<funcall_operation>
+                           (pstate->pop (), std::move (args));
                          pop_current_type ();
                          if (current_type)
                            current_type = TYPE_TARGET_TYPE (current_type);
@@ -381,24 +342,23 @@ exp       :       exp '('
        ;
 
 arglist        :
-         | exp
-                       { arglist_len = 1; }
+        | exp
+                       { pstate->arglist_len = 1; }
         | arglist ',' exp   %prec ABOVE_COMMA
-                       { arglist_len++; }
+                       { pstate->arglist_len++; }
        ;
 
 exp    :       type '(' exp ')' %prec UNARY
                        { if (current_type)
                            {
                              /* Allow automatic dereference of classes.  */
-                             if ((TYPE_CODE (current_type) == TYPE_CODE_PTR)
-                                 && (TYPE_CODE (TYPE_TARGET_TYPE (current_type)) == TYPE_CODE_CLASS)
-                                 && (TYPE_CODE ($1) == TYPE_CODE_CLASS))
-                               write_exp_elt_opcode (UNOP_IND);
+                             if ((current_type->code () == TYPE_CODE_PTR)
+                                 && (TYPE_TARGET_TYPE (current_type)->code () == TYPE_CODE_STRUCT)
+                                 && (($1)->code () == TYPE_CODE_STRUCT))
+                               pstate->wrap<unop_ind_operation> ();
                            }
-                         write_exp_elt_opcode (UNOP_CAST);
-                         write_exp_elt_type ($1);
-                         write_exp_elt_opcode (UNOP_CAST); 
+                         pstate->push_new<unop_cast_operation>
+                           (pstate->pop (), $1);
                          current_type = $1; }
        ;
 
@@ -409,224 +369,240 @@ exp     :       '(' exp1 ')'
 /* Binary operators in order of decreasing precedence.  */
 
 exp    :       exp '*' exp
-                       { write_exp_elt_opcode (BINOP_MUL); }
+                       { pstate->wrap2<mul_operation> (); }
        ;
 
 exp    :       exp '/' {
                          if (current_type && is_integral_type (current_type))
                            leftdiv_is_integer = 1;
-                       } 
+                       }
                exp
-                       { 
+                       {
                          if (leftdiv_is_integer && current_type
                              && is_integral_type (current_type))
                            {
-                             write_exp_elt_opcode (UNOP_CAST);
-                             write_exp_elt_type (parse_type->builtin_long_double);
-                             current_type = parse_type->builtin_long_double;
-                             write_exp_elt_opcode (UNOP_CAST);
+                             pstate->push_new<unop_cast_operation>
+                               (pstate->pop (),
+                                parse_type (pstate)->builtin_long_double);
+                             current_type
+                               = parse_type (pstate)->builtin_long_double;
                              leftdiv_is_integer = 0;
                            }
 
-                         write_exp_elt_opcode (BINOP_DIV); 
+                         pstate->wrap2<div_operation> ();
                        }
        ;
 
 exp    :       exp DIV exp
-                       { write_exp_elt_opcode (BINOP_INTDIV); }
+                       { pstate->wrap2<intdiv_operation> (); }
        ;
 
 exp    :       exp MOD exp
-                       { write_exp_elt_opcode (BINOP_REM); }
+                       { pstate->wrap2<rem_operation> (); }
        ;
 
 exp    :       exp '+' exp
-                       { write_exp_elt_opcode (BINOP_ADD); }
+                       { pstate->wrap2<add_operation> (); }
        ;
 
 exp    :       exp '-' exp
-                       { write_exp_elt_opcode (BINOP_SUB); }
+                       { pstate->wrap2<sub_operation> (); }
        ;
 
 exp    :       exp LSH exp
-                       { write_exp_elt_opcode (BINOP_LSH); }
+                       { pstate->wrap2<lsh_operation> (); }
        ;
 
 exp    :       exp RSH exp
-                       { write_exp_elt_opcode (BINOP_RSH); }
+                       { pstate->wrap2<rsh_operation> (); }
        ;
 
 exp    :       exp '=' exp
-                       { write_exp_elt_opcode (BINOP_EQUAL); 
-                         current_type = parse_type->builtin_bool;
+                       {
+                         pstate->wrap2<equal_operation> ();
+                         current_type = parse_type (pstate)->builtin_bool;
                        }
        ;
 
 exp    :       exp NOTEQUAL exp
-                       { write_exp_elt_opcode (BINOP_NOTEQUAL); 
-                         current_type = parse_type->builtin_bool;
+                       {
+                         pstate->wrap2<notequal_operation> ();
+                         current_type = parse_type (pstate)->builtin_bool;
                        }
        ;
 
 exp    :       exp LEQ exp
-                       { write_exp_elt_opcode (BINOP_LEQ); 
-                         current_type = parse_type->builtin_bool;
+                       {
+                         pstate->wrap2<leq_operation> ();
+                         current_type = parse_type (pstate)->builtin_bool;
                        }
        ;
 
 exp    :       exp GEQ exp
-                       { write_exp_elt_opcode (BINOP_GEQ); 
-                         current_type = parse_type->builtin_bool;
+                       {
+                         pstate->wrap2<geq_operation> ();
+                         current_type = parse_type (pstate)->builtin_bool;
                        }
        ;
 
 exp    :       exp '<' exp
-                       { write_exp_elt_opcode (BINOP_LESS); 
-                         current_type = parse_type->builtin_bool;
+                       {
+                         pstate->wrap2<less_operation> ();
+                         current_type = parse_type (pstate)->builtin_bool;
                        }
        ;
 
 exp    :       exp '>' exp
-                       { write_exp_elt_opcode (BINOP_GTR); 
-                         current_type = parse_type->builtin_bool;
+                       {
+                         pstate->wrap2<gtr_operation> ();
+                         current_type = parse_type (pstate)->builtin_bool;
                        }
        ;
 
 exp    :       exp ANDAND exp
-                       { write_exp_elt_opcode (BINOP_BITWISE_AND); }
+                       { pstate->wrap2<bitwise_and_operation> (); }
        ;
 
 exp    :       exp XOR exp
-                       { write_exp_elt_opcode (BINOP_BITWISE_XOR); }
+                       { pstate->wrap2<bitwise_xor_operation> (); }
        ;
 
 exp    :       exp OR exp
-                       { write_exp_elt_opcode (BINOP_BITWISE_IOR); }
+                       { pstate->wrap2<bitwise_ior_operation> (); }
        ;
 
 exp    :       exp ASSIGN exp
-                       { write_exp_elt_opcode (BINOP_ASSIGN); }
+                       { pstate->wrap2<assign_operation> (); }
        ;
 
 exp    :       TRUEKEYWORD
-                       { write_exp_elt_opcode (OP_BOOL);
-                         write_exp_elt_longcst ((LONGEST) $1);
-                         current_type = parse_type->builtin_bool;
-                         write_exp_elt_opcode (OP_BOOL); }
+                       {
+                         pstate->push_new<bool_operation> ($1);
+                         current_type = parse_type (pstate)->builtin_bool;
+                       }
        ;
 
 exp    :       FALSEKEYWORD
-                       { write_exp_elt_opcode (OP_BOOL);
-                         write_exp_elt_longcst ((LONGEST) $1);
-                         current_type = parse_type->builtin_bool;
-                         write_exp_elt_opcode (OP_BOOL); }
+                       {
+                         pstate->push_new<bool_operation> ($1);
+                         current_type = parse_type (pstate)->builtin_bool;
+                       }
        ;
 
 exp    :       INT
-                       { write_exp_elt_opcode (OP_LONG);
-                         write_exp_elt_type ($1.type);
+                       {
+                         pstate->push_new<long_const_operation>
+                           ($1.type, $1.val);
                          current_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,
+                         parse_number (pstate, $1.stoken.ptr,
                                        $1.stoken.length, 0, &val);
-                         write_exp_elt_opcode (OP_LONG);
-                         write_exp_elt_type (val.typed_val_int.type);
+                         pstate->push_new<long_const_operation>
+                           (val.typed_val_int.type,
+                            val.typed_val_int.val);
                          current_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);
-                         current_type = $1.type;
-                         write_exp_elt_dblcst ($1.dval);
-                         write_exp_elt_opcode (OP_DOUBLE); }
+                       {
+                         float_data data;
+                         std::copy (std::begin ($1.val), std::end ($1.val),
+                                    std::begin (data));
+                         pstate->push_new<float_const_operation> ($1.type, data);
+                       }
        ;
 
 exp    :       variable
        ;
 
-exp    :       VARIABLE
-                       /* Already written by write_dollar_variable.
-                          Handle current_type.  */
-                       {  if (intvar) {
-                            struct value * val, * mark;
-
-                            mark = value_mark ();
-                            val = value_of_internalvar (parse_gdbarch,
-                                                        intvar);
-                            current_type = value_type (val);
-                            value_release_to_mark (mark);
-                          }
+exp    :       DOLLAR_VARIABLE
+                       {
+                         pstate->push_dollar ($1);
+
+                         /* $ is the normal prefix for pascal
+                            hexadecimal values but this conflicts
+                            with the GDB use for debugger variables
+                            so in expression to enter hexadecimal
+                            values we still need to use C syntax with
+                            0xff */
+                         std::string tmp ($1.ptr, $1.length);
+                         /* Handle current_type.  */
+                         struct internalvar *intvar
+                           = lookup_only_internalvar (tmp.c_str () + 1);
+                         if (intvar != nullptr)
+                           {
+                             scoped_value_mark mark;
+
+                             value *val
+                               = value_of_internalvar (pstate->gdbarch (),
+                                                       intvar);
+                             current_type = value_type (val);
+                           }
                        }
        ;
 
 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); }
+                       {
+                         current_type = parse_type (pstate)->builtin_int;
+                         $3 = check_typedef ($3);
+                         pstate->push_new<long_const_operation>
+                           (parse_type (pstate)->builtin_int,
+                            TYPE_LENGTH ($3)); }
        ;
 
 exp    :       SIZEOF  '(' exp ')'      %prec UNARY
-                       { write_exp_elt_opcode (UNOP_SIZEOF); }
-       
+                       { pstate->wrap<unop_sizeof_operation> ();
+                         current_type = parse_type (pstate)->builtin_int; }
+
 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); }
+                         const char *sp = $1.ptr; int count = $1.length;
+
+                         std::vector<operation_up> args (count + 1);
+                         for (int i = 0; i < count; ++i)
+                           args[i] = (make_operation<long_const_operation>
+                                      (parse_type (pstate)->builtin_char,
+                                       *sp++));
+                         args[count] = (make_operation<long_const_operation>
+                                        (parse_type (pstate)->builtin_char,
+                                         '\0'));
+                         pstate->push_new<array_operation>
+                           (0, $1.length, std::move (args));
+                       }
        ;
 
 /* Object pascal  */
 exp    :       THIS
-                       { 
+                       {
                          struct value * this_val;
                          struct type * this_type;
-                         write_exp_elt_opcode (OP_THIS);
-                         write_exp_elt_opcode (OP_THIS); 
+                         pstate->push_new<op_this_operation> ();
                          /* We need type of this.  */
-                         this_val = value_of_this (0); 
+                         this_val
+                           = value_of_this_silent (pstate->language ());
                          if (this_val)
                            this_type = value_type (this_val);
                          else
                            this_type = NULL;
                          if (this_type)
                            {
-                             if (TYPE_CODE (this_type) == TYPE_CODE_PTR)
+                             if (this_type->code () == TYPE_CODE_PTR)
                                {
                                  this_type = TYPE_TARGET_TYPE (this_type);
-                                 write_exp_elt_opcode (UNOP_IND);
+                                 pstate->wrap<unop_ind_operation> ();
                                }
                            }
-               
+
                          current_type = this_type;
                        }
        ;
@@ -635,133 +611,101 @@ exp     :       THIS
 
 block  :       BLOCKNAME
                        {
-                         if ($1.sym != 0)
-                             $$ = SYMBOL_BLOCK_VALUE ($1.sym);
+                         if ($1.sym.symbol != 0)
+                             $$ = SYMBOL_BLOCK_VALUE ($1.sym.symbol);
                          else
                            {
+                             std::string copy = copy_name ($1.stoken);
                              struct symtab *tem =
-                                 lookup_symtab (copy_name ($1.stoken));
+                                 lookup_symtab (copy.c_str ());
                              if (tem)
-                               $$ = BLOCKVECTOR_BLOCK (BLOCKVECTOR (tem),
+                               $$ = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (tem),
                                                        STATIC_BLOCK);
                              else
-                               error ("No file or function \"%s\".",
-                                      copy_name ($1.stoken));
+                               error (_("No file or function \"%s\"."),
+                                      copy.c_str ());
                            }
                        }
        ;
 
 block  :       block COLONCOLON name
-                       { struct symbol *tem
-                           = lookup_symbol (copy_name ($3), $1,
-                                            VAR_DOMAIN, (int *) NULL);
+                       {
+                         std::string copy = copy_name ($3);
+                         struct symbol *tem
+                           = lookup_symbol (copy.c_str (), $1,
+                                            VAR_DOMAIN, NULL).symbol;
+
                          if (!tem || SYMBOL_CLASS (tem) != LOC_BLOCK)
-                           error ("No function \"%s\" in specified context.",
-                                  copy_name ($3));
+                           error (_("No function \"%s\" in specified context."),
+                                  copy.c_str ());
                          $$ = 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));
-
-                         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); }
+                       { struct block_symbol sym;
+
+                         std::string copy = copy_name ($3);
+                         sym = lookup_symbol (copy.c_str (), $1,
+                                              VAR_DOMAIN, NULL);
+                         if (sym.symbol == 0)
+                           error (_("No symbol \"%s\" in specified context."),
+                                  copy.c_str ());
+
+                         pstate->push_new<var_value_operation> (sym);
+                       }
        ;
 
 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);
+
+                         if (type->code () != TYPE_CODE_STRUCT
+                             && type->code () != TYPE_CODE_UNION)
+                           error (_("`%s' is not defined as an aggregate type."),
+                                  type->name ());
+
+                         pstate->push_new<scope_operation>
+                           (type, copy_name ($3));
                        }
        ;
 
 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;
-                           }
+                         std::string name = copy_name ($2);
 
-                         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);
+                         struct block_symbol sym
+                           = lookup_symbol (name.c_str (), nullptr,
+                                            VAR_DOMAIN, nullptr);
+                         pstate->push_symbol (name.c_str (), sym);
                        }
        ;
 
 variable:      name_not_typename
-                       { struct symbol *sym = $1.sym;
+                       { struct block_symbol sym = $1.sym;
 
-                         if (sym)
+                         if (sym.symbol)
                            {
-                             if (symbol_read_needs_frame (sym))
-                               {
-                                 if (innermost_block == 0
-                                     || contained_in (block_found,
-                                                      innermost_block))
-                                   innermost_block = block_found;
-                               }
+                             if (symbol_read_needs_frame (sym.symbol))
+                               pstate->block_tracker->update (sym);
 
-                             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);
-                             current_type = sym->type; }
+                             pstate->push_new<var_value_operation> (sym);
+                             current_type = sym.symbol->type; }
                          else if ($1.is_a_field_of_this)
                            {
                              struct value * this_val;
                              struct type * this_type;
                              /* Object pascal: it hangs off of `this'.  Must
-                                not inadvertently convert from a method call
+                                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);
+                             pstate->block_tracker->update (sym);
+                             operation_up thisop
+                               = make_operation<op_this_operation> ();
+                             pstate->push_new<structop_operation>
+                               (std::move (thisop), copy_name ($1.stoken));
                              /* We need type of this.  */
-                             this_val = value_of_this (0); 
+                             this_val
+                               = value_of_this_silent (pstate->language ());
                              if (this_val)
                                this_type = value_type (this_val);
                              else
@@ -769,26 +713,27 @@ variable: name_not_typename
                              if (this_type)
                                current_type = lookup_struct_elt_type (
                                  this_type,
-                                 copy_name ($1.stoken), 0);
+                                 copy_name ($1.stoken).c_str (), 0);
                              else
-                               current_type = NULL; 
+                               current_type = NULL;
                            }
                          else
                            {
-                             struct minimal_symbol *msymbol;
-                             char *arg = copy_name ($1.stoken);
+                             struct bound_minimal_symbol msymbol;
+                             std::string arg = copy_name ($1.stoken);
 
                              msymbol =
-                               lookup_minimal_symbol (arg, NULL, NULL);
-                             if (msymbol != NULL)
-                               write_exp_msymbol (msymbol);
+                               lookup_bound_minimal_symbol (arg.c_str ());
+                             if (msymbol.minsym != NULL)
+                               pstate->push_new<var_msym_value_operation>
+                                 (msymbol);
                              else if (!have_full_symbols ()
                                       && !have_partial_symbols ())
-                               error ("No symbol table is loaded.  "
-                                      "Use the \"file\" command.");
+                               error (_("No symbol table is loaded.  "
+                                      "Use the \"file\" command."));
                              else
-                               error ("No symbol \"%s\" in current context.",
-                                      copy_name ($1.stoken));
+                               error (_("No symbol \"%s\" in current context."),
+                                      arg.c_str ());
                            }
                        }
        ;
@@ -814,11 +759,15 @@ typebase  /* Implements (approximately): (type-qualifier)* type-specifier */
        |       TYPENAME
                        { $$ = $1.type; }
        |       STRUCT name
-                       { $$ = lookup_struct (copy_name ($2),
-                                             expression_context_block); }
+                       { $$
+                           = lookup_struct (copy_name ($2).c_str (),
+                                            pstate->expression_context_block);
+                       }
        |       CLASS name
-                       { $$ = lookup_struct (copy_name ($2),
-                                             expression_context_block); }
+                       { $$
+                           = lookup_struct (copy_name ($2).c_str (),
+                                            pstate->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.  */
@@ -850,7 +799,8 @@ name_not_typename : NAME
 /*** Needs some error checking for the float case ***/
 
 static int
-parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere)
+parse_number (struct parser_state *par_state,
+             const 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.  */
@@ -875,9 +825,30 @@ parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere)
 
   if (parsed_float)
     {
-      if (! parse_c_float (parse_gdbarch, p, len,
-                          &putithere->typed_val_float.dval,
-                          &putithere->typed_val_float.type))
+      /* Handle suffixes: 'f' for float, 'l' for long double.
+        FIXME: This appears to be an extension -- do we want this?  */
+      if (len >= 1 && tolower (p[len - 1]) == 'f')
+       {
+         putithere->typed_val_float.type
+           = parse_type (par_state)->builtin_float;
+         len--;
+       }
+      else if (len >= 1 && tolower (p[len - 1]) == 'l')
+       {
+         putithere->typed_val_float.type
+           = parse_type (par_state)->builtin_long_double;
+         len--;
+       }
+      /* Default type for floating-point literals is double.  */
+      else
+       {
+         putithere->typed_val_float.type
+           = parse_type (par_state)->builtin_double;
+       }
+
+      if (!parse_float (p, len,
+                       putithere->typed_val_float.type,
+                       putithere->typed_val_float.val))
        return ERROR;
       return FLOAT;
     }
@@ -960,9 +931,9 @@ parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere)
         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 && (ULONGEST) prevn >= (ULONGEST) n))
-           error ("Numeric constant too large.");
+           error (_("Numeric constant too large."));
        }
       prevn = n;
     }
@@ -981,9 +952,10 @@ parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere)
 
   un = (ULONGEST)n >> 2;
   if (long_p == 0
-      && (un >> (gdbarch_int_bit (parse_gdbarch) - 2)) == 0)
+      && (un >> (gdbarch_int_bit (par_state->gdbarch ()) - 2)) == 0)
     {
-      high_bit = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch) - 1);
+      high_bit
+       = ((ULONGEST)1) << (gdbarch_int_bit (par_state->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,
@@ -991,28 +963,29 @@ parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere)
         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;
+      unsigned_type = parse_type (par_state)->builtin_unsigned_int;
+      signed_type = parse_type (par_state)->builtin_int;
     }
   else if (long_p <= 1
-          && (un >> (gdbarch_long_bit (parse_gdbarch) - 2)) == 0)
+          && (un >> (gdbarch_long_bit (par_state->gdbarch ()) - 2)) == 0)
     {
-      high_bit = ((ULONGEST)1) << (gdbarch_long_bit (parse_gdbarch) - 1);
-      unsigned_type = parse_type->builtin_unsigned_long;
-      signed_type = parse_type->builtin_long;
+      high_bit
+       = ((ULONGEST)1) << (gdbarch_long_bit (par_state->gdbarch ()) - 1);
+      unsigned_type = parse_type (par_state)->builtin_unsigned_long;
+      signed_type = parse_type (par_state)->builtin_long;
     }
   else
     {
       int shift;
       if (sizeof (ULONGEST) * HOST_CHAR_BIT
-         < gdbarch_long_long_bit (parse_gdbarch))
+         < gdbarch_long_long_bit (par_state->gdbarch ()))
        /* A long long does not fit in a LONGEST.  */
        shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1);
       else
-       shift = (gdbarch_long_long_bit (parse_gdbarch) - 1);
+       shift = (gdbarch_long_long_bit (par_state->gdbarch ()) - 1);
       high_bit = (ULONGEST) 1 << shift;
-      unsigned_type = parse_type->builtin_unsigned_long_long;
-      signed_type = parse_type->builtin_long_long;
+      unsigned_type = parse_type (par_state)->builtin_unsigned_long_long;
+      signed_type = parse_type (par_state)->builtin_long_long;
     }
 
    putithere->typed_val_int.val = n;
@@ -1049,7 +1022,7 @@ push_current_type (void)
   tpnew->next = tp_top;
   tpnew->stored = current_type;
   current_type = NULL;
-  tp_top = tpnew; 
+  tp_top = tpnew;
 }
 
 static void
@@ -1066,110 +1039,102 @@ pop_current_type (void)
 
 struct token
 {
-  char *operator;
+  const char *oper;
   int token;
   enum exp_opcode opcode;
 };
 
 static const struct token tokentab3[] =
   {
-    {"shr", RSH, BINOP_END},
-    {"shl", LSH, BINOP_END},
-    {"and", ANDAND, BINOP_END},
-    {"div", DIV, BINOP_END},
-    {"not", NOT, BINOP_END},
-    {"mod", MOD, BINOP_END},
-    {"inc", INCREMENT, BINOP_END},
-    {"dec", DECREMENT, BINOP_END},
-    {"xor", XOR, BINOP_END}
+    {"shr", RSH, OP_NULL},
+    {"shl", LSH, OP_NULL},
+    {"and", ANDAND, OP_NULL},
+    {"div", DIV, OP_NULL},
+    {"not", NOT, OP_NULL},
+    {"mod", MOD, OP_NULL},
+    {"inc", INCREMENT, OP_NULL},
+    {"dec", DECREMENT, OP_NULL},
+    {"xor", XOR, OP_NULL}
   };
 
 static const struct token tokentab2[] =
   {
-    {"or", OR, BINOP_END},
-    {"<>", NOTEQUAL, BINOP_END},
-    {"<=", LEQ, BINOP_END},
-    {">=", GEQ, BINOP_END},
-    {":=", ASSIGN, BINOP_END},
-    {"::", COLONCOLON, BINOP_END} };
+    {"or", OR, OP_NULL},
+    {"<>", NOTEQUAL, OP_NULL},
+    {"<=", LEQ, OP_NULL},
+    {">=", GEQ, OP_NULL},
+    {":=", ASSIGN, OP_NULL},
+    {"::", COLONCOLON, OP_NULL} };
 
 /* Allocate uppercased var: */
 /* make an uppercased copy of tokstart.  */
-static char * uptok (tokstart, namelen)
-  char *tokstart;
-  int namelen;
+static char *
+uptok (const char *tokstart, int namelen)
 {
   int i;
   char *uptokstart = (char *)malloc(namelen+1);
   for (i = 0;i <= namelen;i++)
     {
       if ((tokstart[i]>='a' && tokstart[i]<='z'))
-        uptokstart[i] = tokstart[i]-('a'-'A');
+       uptokstart[i] = tokstart[i]-('a'-'A');
       else
-        uptokstart[i] = tokstart[i];
+       uptokstart[i] = tokstart[i];
     }
   uptokstart[namelen]='\0';
   return uptokstart;
 }
 
-/* This is set if the previously-returned token was a structure
-   operator  '.'.  This is used only when parsing to
-   do field name completion.  */
-static int last_was_structop;
-
 /* Read one token, getting characters through lexptr.  */
 
 static int
-yylex ()
+yylex (void)
 {
   int c;
   int namelen;
-  unsigned int i;
-  char *tokstart;
+  const char *tokstart;
   char *uptokstart;
-  char *tokptr;
+  const char *tokptr;
   int explen, tempbufindex;
   static char *tempbuf;
   static int tempbufsize;
-  int saw_structop = last_was_structop;
-  last_was_structop = 0;
+
  retry:
 
-  prev_lexptr = lexptr;
+  pstate->prev_lexptr = pstate->lexptr;
+
+  tokstart = pstate->lexptr;
+  explen = strlen (pstate->lexptr);
 
-  tokstart = lexptr;
-  explen = strlen (lexptr);
   /* See if it is a special token of length 3.  */
   if (explen > 2)
-    for (i = 0; i < sizeof (tokentab3) / sizeof (tokentab3[0]); i++)
-      if (strncasecmp (tokstart, tokentab3[i].operator, 3) == 0
-          && (!isalpha (tokentab3[i].operator[0]) || explen == 3
-              || (!isalpha (tokstart[3])
+    for (int i = 0; i < sizeof (tokentab3) / sizeof (tokentab3[0]); i++)
+      if (strncasecmp (tokstart, tokentab3[i].oper, 3) == 0
+         && (!isalpha (tokentab3[i].oper[0]) || explen == 3
+             || (!isalpha (tokstart[3])
                  && !isdigit (tokstart[3]) && tokstart[3] != '_')))
-        {
-          lexptr += 3;
-          yylval.opcode = tokentab3[i].opcode;
-          return tokentab3[i].token;
-        }
+       {
+         pstate->lexptr += 3;
+         yylval.opcode = tokentab3[i].opcode;
+         return tokentab3[i].token;
+       }
 
   /* See if it is a special token of length 2.  */
   if (explen > 1)
-  for (i = 0; i < sizeof (tokentab2) / sizeof (tokentab2[0]); i++)
-      if (strncasecmp (tokstart, tokentab2[i].operator, 2) == 0
-          && (!isalpha (tokentab2[i].operator[0]) || explen == 2
-              || (!isalpha (tokstart[2])
+  for (int i = 0; i < sizeof (tokentab2) / sizeof (tokentab2[0]); i++)
+      if (strncasecmp (tokstart, tokentab2[i].oper, 2) == 0
+         && (!isalpha (tokentab2[i].oper[0]) || explen == 2
+             || (!isalpha (tokstart[2])
                  && !isdigit (tokstart[2]) && tokstart[2] != '_')))
-        {
-          lexptr += 2;
-          yylval.opcode = tokentab2[i].opcode;
-          return tokentab2[i].token;
-        }
+       {
+         pstate->lexptr += 2;
+         yylval.opcode = tokentab2[i].opcode;
+         return tokentab2[i].token;
+       }
 
   switch (c = *tokstart)
     {
     case 0:
-      if (saw_structop && search_field)
+      if (search_field && pstate->parse_completion)
        return COMPLETE;
       else
        return 0;
@@ -1177,69 +1142,67 @@ yylex ()
     case ' ':
     case '\t':
     case '\n':
-      lexptr++;
+      pstate->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 object pascal
         for example).  */
-      lexptr++;
-      c = *lexptr++;
+      pstate->lexptr++;
+      c = *pstate->lexptr++;
       if (c == '\\')
-       c = parse_escape (parse_gdbarch, &lexptr);
+       c = parse_escape (pstate->gdbarch (), &pstate->lexptr);
       else if (c == '\'')
-       error ("Empty character constant.");
+       error (_("Empty character constant."));
 
       yylval.typed_val_int.val = c;
-      yylval.typed_val_int.type = parse_type->builtin_char;
+      yylval.typed_val_int.type = parse_type (pstate)->builtin_char;
 
-      c = *lexptr++;
+      c = *pstate->lexptr++;
       if (c != '\'')
        {
          namelen = skip_quoted (tokstart) - tokstart;
          if (namelen > 2)
            {
-             lexptr = tokstart + namelen;
-             if (lexptr[-1] != '\'')
-               error ("Unmatched single quote.");
+             pstate->lexptr = tokstart + namelen;
+             if (pstate->lexptr[-1] != '\'')
+               error (_("Unmatched single quote."));
              namelen -= 2;
-              tokstart++;
-              uptokstart = uptok(tokstart,namelen);
+             tokstart++;
+             uptokstart = uptok(tokstart,namelen);
              goto tryname;
            }
-         error ("Invalid character constant.");
+         error (_("Invalid character constant."));
        }
       return INT;
 
     case '(':
       paren_depth++;
-      lexptr++;
+      pstate->lexptr++;
       return c;
 
     case ')':
       if (paren_depth == 0)
        return 0;
       paren_depth--;
-      lexptr++;
+      pstate->lexptr++;
       return c;
 
     case ',':
-      if (comma_terminates && paren_depth == 0)
+      if (pstate->comma_terminates && paren_depth == 0)
        return 0;
-      lexptr++;
+      pstate->lexptr++;
       return c;
 
     case '.':
       /* Might be a floating point number.  */
-      if (lexptr[1] < '0' || lexptr[1] > '9')
+      if (pstate->lexptr[1] < '0' || pstate->lexptr[1] > '9')
        {
-         if (in_parse_field)
-           last_was_structop = 1;
          goto symbol;          /* Nope, must be a symbol.  */
        }
 
-      /* FALL THRU into number case.  */
+      /* FALL THRU.  */
 
     case '0':
     case '1':
@@ -1254,7 +1217,7 @@ yylex ()
       {
        /* It's a number.  */
        int got_dot = 0, got_e = 0, toktype;
-       char *p = tokstart;
+       const char *p = tokstart;
        int hex = input_radix > 10;
 
        if (c == '0' && (p[1] == 'x' || p[1] == 'X'))
@@ -1292,17 +1255,17 @@ yylex ()
                                  && (*p < 'A' || *p > 'Z')))
              break;
          }
-       toktype = parse_number (tokstart,
+       toktype = parse_number (pstate, tokstart,
                                p - tokstart, got_dot | got_e, &yylval);
-        if (toktype == ERROR)
+       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);
+           error (_("Invalid number \"%s\"."), err_copy);
          }
-       lexptr = p;
+       pstate->lexptr = p;
        return toktype;
       }
 
@@ -1326,7 +1289,7 @@ yylex ()
     case '{':
     case '}':
     symbol:
-      lexptr++;
+      pstate->lexptr++;
       return c;
 
     case '"':
@@ -1358,8 +1321,8 @@ yylex ()
            /* Do nothing, loop will terminate.  */
            break;
          case '\\':
-           tokptr++;
-           c = parse_escape (parse_gdbarch, &tokptr);
+           ++tokptr;
+           c = parse_escape (pstate->gdbarch (), &tokptr);
            if (c == -1)
              {
                continue;
@@ -1373,19 +1336,19 @@ yylex ()
       } while ((*tokptr != '"') && (*tokptr != '\0'));
       if (*tokptr++ != '"')
        {
-         error ("Unterminated string in expression.");
+         error (_("Unterminated string in expression."));
        }
       tempbuf[tempbufindex] = '\0';    /* See note above.  */
       yylval.sval.ptr = tempbuf;
       yylval.sval.length = tempbufindex;
-      lexptr = tokptr;
+      pstate->lexptr = tokptr;
       return (STRING);
     }
 
   if (!(c == '_' || c == '$'
        || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')))
     /* We must have come across a bad character (e.g. ';').  */
-    error ("Invalid character '%c' in expression.", c);
+    error (_("Invalid character '%c' in expression."), c);
 
   /* It's a name.  See how long it is.  */
   namelen = 0;
@@ -1429,7 +1392,7 @@ yylex ()
       return 0;
     }
 
-  lexptr += namelen;
+  pstate->lexptr += namelen;
 
   tryname:
 
@@ -1461,26 +1424,26 @@ yylex ()
        }
       if (strcmp (uptokstart, "FALSE") == 0)
        {
-          yylval.lval = 0;
+         yylval.lval = 0;
          free (uptokstart);
-          return FALSEKEYWORD;
-        }
+         return FALSEKEYWORD;
+       }
       break;
     case 4:
       if (strcmp (uptokstart, "TRUE") == 0)
        {
-          yylval.lval = 1;
+         yylval.lval = 1;
          free (uptokstart);
          return TRUEKEYWORD;
-        }
+       }
       if (strcmp (uptokstart, "SELF") == 0)
-        {
-          /* Here we search for 'this' like
-             inserted in FPC stabs debug info.  */
+       {
+         /* Here we search for 'this' like
+            inserted in FPC stabs debug info.  */
          static const char this_name[] = "this";
 
-         if (lookup_symbol (this_name, expression_context_block,
-                            VAR_DOMAIN, (int *) NULL))
+         if (lookup_symbol (this_name, pstate->expression_context_block,
+                            VAR_DOMAIN, NULL).symbol)
            {
              free (uptokstart);
              return THIS;
@@ -1496,19 +1459,8 @@ yylex ()
 
   if (*tokstart == '$')
     {
-      char c;
-      /* $ is the normal prefix for pascal hexadecimal values
-        but this conflicts with the GDB use for debugger variables
-        so in expression to enter hexadecimal values
-        we still need to use C syntax with 0xff  */
-      write_dollar_variable (yylval.sval);
-      c = tokstart[namelen];
-      tokstart[namelen] = 0;
-      intvar = lookup_only_internalvar (++tokstart);
-      --tokstart;
-      tokstart[namelen] = c;
       free (uptokstart);
-      return VARIABLE;
+      return DOLLAR_VARIABLE;
     }
 
   /* Use token-type BLOCKNAME for symbols that happen to be defined as
@@ -1517,99 +1469,92 @@ yylex ()
      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);
+    std::string tmp = copy_name (yylval.sval);
     struct symbol *sym;
-    int is_a_field_of_this = 0;
+    struct field_of_this_result is_a_field_of_this;
     int is_a_field = 0;
     int hextype;
 
-
+    is_a_field_of_this.type = NULL;
     if (search_field && current_type)
-      is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL);
-    if (is_a_field || in_parse_field)
+      is_a_field = (lookup_struct_elt_type (current_type,
+                                           tmp.c_str (), 1) != NULL);
+    if (is_a_field)
       sym = NULL;
     else
-      sym = lookup_symbol (tmpexpression_context_block,
-                          VAR_DOMAIN, &is_a_field_of_this);
+      sym = lookup_symbol (tmp.c_str (), pstate->expression_context_block,
+                          VAR_DOMAIN, &is_a_field_of_this).symbol;
     /* second chance uppercased (as Free Pascal does).  */
-    if (!sym && !is_a_field_of_this && !is_a_field)
+    if (!sym && is_a_field_of_this.type == NULL && !is_a_field)
       {
-       for (i = 0; i <= namelen; i++)
-         {
-           if ((tmp[i] >= 'a' && tmp[i] <= 'z'))
-             tmp[i] -= ('a'-'A');
-         }
+       for (int i = 0; i <= namelen; i++)
+        {
+          if ((tmp[i] >= 'a' && tmp[i] <= 'z'))
+            tmp[i] -= ('a'-'A');
+        }
        if (search_field && current_type)
-        is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL);
-       if (is_a_field || in_parse_field)
+        is_a_field = (lookup_struct_elt_type (current_type,
+                                              tmp.c_str (), 1) != NULL);
+       if (is_a_field)
         sym = NULL;
        else
-        sym = lookup_symbol (tmp, expression_context_block,
-                             VAR_DOMAIN, &is_a_field_of_this);
-       if (sym || is_a_field_of_this || is_a_field)
-         for (i = 0; i <= namelen; i++)
-           {
-             if ((tokstart[i] >= 'a' && tokstart[i] <= 'z'))
-               tokstart[i] -= ('a'-'A');
-           }
+        sym = lookup_symbol (tmp.c_str (), pstate->expression_context_block,
+                             VAR_DOMAIN, &is_a_field_of_this).symbol;
       }
     /* Third chance Capitalized (as GPC does).  */
-    if (!sym && !is_a_field_of_this && !is_a_field)
+    if (!sym && is_a_field_of_this.type == NULL && !is_a_field)
       {
-       for (i = 0; i <= namelen; i++)
-         {
-           if (i == 0)
-             {
-              if ((tmp[i] >= 'a' && tmp[i] <= 'z'))
-                tmp[i] -= ('a'-'A');
-             }
-           else
-           if ((tmp[i] >= 'A' && tmp[i] <= 'Z'))
-             tmp[i] -= ('A'-'a');
-          }
+       for (int i = 0; i <= namelen; i++)
+        {
+          if (i == 0)
+            {
+             if ((tmp[i] >= 'a' && tmp[i] <= 'z'))
+               tmp[i] -= ('a'-'A');
+            }
+          else
+          if ((tmp[i] >= 'A' && tmp[i] <= 'Z'))
+            tmp[i] -= ('A'-'a');
+         }
        if (search_field && current_type)
-        is_a_field = (lookup_struct_elt_type (current_type, tmp, 1) != NULL);
-       if (is_a_field || in_parse_field)
+        is_a_field = (lookup_struct_elt_type (current_type,
+                                              tmp.c_str (), 1) != NULL);
+       if (is_a_field)
         sym = NULL;
        else
-        sym = lookup_symbol (tmp, expression_context_block,
-                             VAR_DOMAIN, &is_a_field_of_this);
-       if (sym || is_a_field_of_this || is_a_field)
-          for (i = 0; i <= namelen; i++)
-            {
-              if (i == 0)
-                {
-                  if ((tokstart[i] >= 'a' && tokstart[i] <= 'z'))
-                    tokstart[i] -= ('a'-'A');
-                }
-              else
-                if ((tokstart[i] >= 'A' && tokstart[i] <= 'Z'))
-                  tokstart[i] -= ('A'-'a');
-            }
+        sym = lookup_symbol (tmp.c_str (), pstate->expression_context_block,
+                             VAR_DOMAIN, &is_a_field_of_this).symbol;
       }
 
-    if (is_a_field)
+    if (is_a_field || (is_a_field_of_this.type != NULL))
       {
        tempbuf = (char *) realloc (tempbuf, namelen + 1);
-       strncpy (tempbuf, tokstart, namelen); tempbuf [namelen] = 0;
+       strncpy (tempbuf, tmp.c_str (), namelen);
+       tempbuf [namelen] = 0;
        yylval.sval.ptr = tempbuf;
-       yylval.sval.length = namelen; 
+       yylval.sval.length = namelen;
+       yylval.ssym.sym.symbol = NULL;
+       yylval.ssym.sym.block = NULL;
        free (uptokstart);
-       return FIELDNAME;
-      } 
+       yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL;
+       if (is_a_field)
+         return FIELDNAME;
+       else
+         return NAME;
+      }
     /* 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 once symbols are read).  */
     if ((sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
-        || lookup_symtab (tmp))
+       || lookup_symtab (tmp.c_str ()))
       {
-       yylval.ssym.sym = sym;
-       yylval.ssym.is_a_field_of_this = is_a_field_of_this;
+       yylval.ssym.sym.symbol = sym;
+       yylval.ssym.sym.block = NULL;
+       yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL;
        free (uptokstart);
        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
@@ -1620,8 +1565,8 @@ yylex ()
             distinction) named x, then this code incorrectly thinks we
             are dealing with nested types rather than a member function.  */
 
-         char *p;
-         char *namestart;
+         const char *p;
+         const char *namestart;
          struct symbol *best_sym;
 
          /* Look ahead to detect nested types.  This probably should be
@@ -1635,7 +1580,7 @@ yylex ()
             us whether a type is nested), we just ignore the
             containing type.  */
 
-         p = lexptr;
+         p = pstate->lexptr;
          best_sym = sym;
          while (1)
            {
@@ -1659,24 +1604,28 @@ yylex ()
                      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 *ncopy
+                       = (char *) alloca (tmp.size () + strlen (namestart)
+                                          + 3);
                      char *tmp1;
 
                      tmp1 = ncopy;
-                     memcpy (tmp1, tmp, strlen (tmp));
-                     tmp1 += strlen (tmp);
+                     memcpy (tmp1, tmp.c_str (), tmp.size ());
+                     tmp1 += tmp.size ();
                      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);
+                     cur_sym
+                       = lookup_symbol (ncopy,
+                                        pstate->expression_context_block,
+                                        VAR_DOMAIN, NULL).symbol;
                      if (cur_sym)
                        {
                          if (SYMBOL_CLASS (cur_sym) == LOC_TYPEDEF)
                            {
                              best_sym = cur_sym;
-                             lexptr = p;
+                             pstate->lexptr = p;
                            }
                          else
                            break;
@@ -1697,10 +1646,10 @@ yylex ()
 #endif /* not 0 */
          free (uptokstart);
          return TYPENAME;
-        }
+       }
     yylval.tsym.type
-      = language_lookup_primitive_type_by_name (parse_language,
-                                               parse_gdbarch, tmp);
+      = language_lookup_primitive_type (pstate->language (),
+                                       pstate->gdbarch (), tmp.c_str ());
     if (yylval.tsym.type != NULL)
       {
        free (uptokstart);
@@ -1711,15 +1660,16 @@ yylex ()
        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)))
+       && ((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);
+       hextype = parse_number (pstate, tokstart, namelen, 0, &newlval);
        if (hextype == INT)
          {
-           yylval.ssym.sym = sym;
-           yylval.ssym.is_a_field_of_this = is_a_field_of_this;
+           yylval.ssym.sym.symbol = sym;
+           yylval.ssym.sym.block = NULL;
+           yylval.ssym.is_a_field_of_this = is_a_field_of_this.type != NULL;
            free (uptokstart);
            return NAME_OR_INT;
          }
@@ -1727,18 +1677,34 @@ yylex ()
 
     free(uptokstart);
     /* Any other kind of symbol.  */
-    yylval.ssym.sym = sym;
-    yylval.ssym.is_a_field_of_this = is_a_field_of_this;
+    yylval.ssym.sym.symbol = sym;
+    yylval.ssym.sym.block = NULL;
     return NAME;
   }
 }
 
-void
-yyerror (msg)
-     char *msg;
+/* See language.h.  */
+
+int
+pascal_language::parser (struct parser_state *par_state) const
+{
+  /* Setting up the parser state.  */
+  scoped_restore pstate_restore = make_scoped_restore (&pstate);
+  gdb_assert (par_state != NULL);
+  pstate = par_state;
+  paren_depth = 0;
+
+  int result = yyparse ();
+  if (!result)
+    pstate->set_operation (pstate->pop ());
+  return result;
+}
+
+static void
+yyerror (const char *msg)
 {
-  if (prev_lexptr)
-    lexptr = prev_lexptr;
+  if (pstate->prev_lexptr)
+    pstate->lexptr = pstate->prev_lexptr;
 
-  error ("A %s in expression, near `%s'.", (msg ? msg : "error"), lexptr);
+  error (_("A %s in expression, near `%s'."), msg, pstate->lexptr);
 }