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[RFC 2/8] C language


Hi,

This patch modifies gdb/{c-exp.y,c-lang.h} in order to reflect the
changes made by the first patch of the series.

Here and in all the .y files, I had to add an argument to the parser and
the lexer functions, which is a `struct parser_state *ps'.

Thanks,

Sergio.

diff --git a/gdb/c-exp.y b/gdb/c-exp.y
index bf4f4bc..139cf67 100644
--- a/gdb/c-exp.y
+++ b/gdb/c-exp.y
@@ -54,7 +54,7 @@
 #include "gdb_assert.h"
 #include "macroscope.h"
 
-#define parse_type builtin_type (parse_gdbarch)
+#define parse_type(ps) builtin_type (parse_gdbarch (ps))
 
 /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
    as well as gratuitiously global symbol names, so we can have multiple
@@ -110,14 +110,17 @@
 
 #define YYFPRINTF parser_fprintf
 
-int yyparse (void);
+int yyparse (struct parser_state *);
 
-static int yylex (void);
+static int yylex (struct parser_state *);
 
-void yyerror (char *);
+void yyerror (struct parser_state *, char *);
 
 %}
 
+%parse-param {struct parser_state *ps}
+%lex-param {struct parser_state *ps}
+
 /* Although the yacc "value" of an expression is not used,
    since the result is stored in the structure being created,
    other node types do have values.  */
@@ -155,7 +158,8 @@ void yyerror (char *);
 
 %{
 /* YYSTYPE gets defined by %union */
-static int parse_number (char *, int, int, YYSTYPE *);
+static int parse_number (struct parser_state *ps, char *, int, int,
+			 YYSTYPE *);
 static struct stoken operator_stoken (const char *);
 %}
 
@@ -252,134 +256,134 @@ start   :	exp1
 	;
 
 type_exp:	type
-			{ write_exp_elt_opcode(OP_TYPE);
-			  write_exp_elt_type($1);
-			  write_exp_elt_opcode(OP_TYPE);}
+			{ write_exp_elt_opcode (ps, OP_TYPE);
+			  write_exp_elt_type (ps, $1);
+			  write_exp_elt_opcode (ps, OP_TYPE);}
 	;
 
 /* Expressions, including the comma operator.  */
 exp1	:	exp
 	|	exp1 ',' exp
-			{ write_exp_elt_opcode (BINOP_COMMA); }
+			{ write_exp_elt_opcode (ps, BINOP_COMMA); }
 	;
 
 /* Expressions, not including the comma operator.  */
 exp	:	'*' exp    %prec UNARY
-			{ write_exp_elt_opcode (UNOP_IND); }
+			{ write_exp_elt_opcode (ps, UNOP_IND); }
 	;
 
 exp	:	'&' exp    %prec UNARY
-			{ write_exp_elt_opcode (UNOP_ADDR); }
+			{ write_exp_elt_opcode (ps, UNOP_ADDR); }
 	;
 
 exp	:	'-' exp    %prec UNARY
-			{ write_exp_elt_opcode (UNOP_NEG); }
+			{ write_exp_elt_opcode (ps, UNOP_NEG); }
 	;
 
 exp	:	'+' exp    %prec UNARY
-			{ write_exp_elt_opcode (UNOP_PLUS); }
+			{ write_exp_elt_opcode (ps, UNOP_PLUS); }
 	;
 
 exp	:	'!' exp    %prec UNARY
-			{ write_exp_elt_opcode (UNOP_LOGICAL_NOT); }
+			{ write_exp_elt_opcode (ps, UNOP_LOGICAL_NOT); }
 	;
 
 exp	:	'~' exp    %prec UNARY
-			{ write_exp_elt_opcode (UNOP_COMPLEMENT); }
+			{ write_exp_elt_opcode (ps, UNOP_COMPLEMENT); }
 	;
 
 exp	:	INCREMENT exp    %prec UNARY
-			{ write_exp_elt_opcode (UNOP_PREINCREMENT); }
+			{ write_exp_elt_opcode (ps, UNOP_PREINCREMENT); }
 	;
 
 exp	:	DECREMENT exp    %prec UNARY
-			{ write_exp_elt_opcode (UNOP_PREDECREMENT); }
+			{ write_exp_elt_opcode (ps, UNOP_PREDECREMENT); }
 	;
 
 exp	:	exp INCREMENT    %prec UNARY
-			{ write_exp_elt_opcode (UNOP_POSTINCREMENT); }
+			{ write_exp_elt_opcode (ps, UNOP_POSTINCREMENT); }
 	;
 
 exp	:	exp DECREMENT    %prec UNARY
-			{ write_exp_elt_opcode (UNOP_POSTDECREMENT); }
+			{ write_exp_elt_opcode (ps, UNOP_POSTDECREMENT); }
 	;
 
 exp	:	SIZEOF exp       %prec UNARY
-			{ write_exp_elt_opcode (UNOP_SIZEOF); }
+			{ write_exp_elt_opcode (ps, UNOP_SIZEOF); }
 	;
 
 exp	:	exp ARROW name
-			{ write_exp_elt_opcode (STRUCTOP_PTR);
-			  write_exp_string ($3);
-			  write_exp_elt_opcode (STRUCTOP_PTR); }
+			{ write_exp_elt_opcode (ps, STRUCTOP_PTR);
+			  write_exp_string (ps, $3);
+			  write_exp_elt_opcode (ps, STRUCTOP_PTR); }
 	;
 
 exp	:	exp ARROW name COMPLETE
-			{ mark_struct_expression ();
-			  write_exp_elt_opcode (STRUCTOP_PTR);
-			  write_exp_string ($3);
-			  write_exp_elt_opcode (STRUCTOP_PTR); }
+			{ mark_struct_expression (ps);
+			  write_exp_elt_opcode (ps, STRUCTOP_PTR);
+			  write_exp_string (ps, $3);
+			  write_exp_elt_opcode (ps, STRUCTOP_PTR); }
 	;
 
 exp	:	exp ARROW COMPLETE
 			{ struct stoken s;
-			  mark_struct_expression ();
-			  write_exp_elt_opcode (STRUCTOP_PTR);
+			  mark_struct_expression (ps);
+			  write_exp_elt_opcode (ps, STRUCTOP_PTR);
 			  s.ptr = "";
 			  s.length = 0;
-			  write_exp_string (s);
-			  write_exp_elt_opcode (STRUCTOP_PTR); }
+			  write_exp_string (ps, s);
+			  write_exp_elt_opcode (ps, STRUCTOP_PTR); }
 	;
 
 exp	:	exp ARROW qualified_name
 			{ /* exp->type::name becomes exp->*(&type::name) */
 			  /* Note: this doesn't work if name is a
 			     static member!  FIXME */
-			  write_exp_elt_opcode (UNOP_ADDR);
-			  write_exp_elt_opcode (STRUCTOP_MPTR); }
+			  write_exp_elt_opcode (ps, UNOP_ADDR);
+			  write_exp_elt_opcode (ps, STRUCTOP_MPTR); }
 	;
 
 exp	:	exp ARROW_STAR exp
-			{ write_exp_elt_opcode (STRUCTOP_MPTR); }
+			{ write_exp_elt_opcode (ps, STRUCTOP_MPTR); }
 	;
 
 exp	:	exp '.' name
-			{ write_exp_elt_opcode (STRUCTOP_STRUCT);
-			  write_exp_string ($3);
-			  write_exp_elt_opcode (STRUCTOP_STRUCT); }
+			{ write_exp_elt_opcode (ps, STRUCTOP_STRUCT);
+			  write_exp_string (ps, $3);
+			  write_exp_elt_opcode (ps, STRUCTOP_STRUCT); }
 	;
 
 exp	:	exp '.' name COMPLETE
-			{ mark_struct_expression ();
-			  write_exp_elt_opcode (STRUCTOP_STRUCT);
-			  write_exp_string ($3);
-			  write_exp_elt_opcode (STRUCTOP_STRUCT); }
+			{ mark_struct_expression (ps);
+			  write_exp_elt_opcode (ps, STRUCTOP_STRUCT);
+			  write_exp_string (ps, $3);
+			  write_exp_elt_opcode (ps, STRUCTOP_STRUCT); }
 	;
 
 exp	:	exp '.' COMPLETE
 			{ struct stoken s;
-			  mark_struct_expression ();
-			  write_exp_elt_opcode (STRUCTOP_STRUCT);
+			  mark_struct_expression (ps);
+			  write_exp_elt_opcode (ps, STRUCTOP_STRUCT);
 			  s.ptr = "";
 			  s.length = 0;
-			  write_exp_string (s);
-			  write_exp_elt_opcode (STRUCTOP_STRUCT); }
+			  write_exp_string (ps, s);
+			  write_exp_elt_opcode (ps, STRUCTOP_STRUCT); }
 	;
 
 exp	:	exp '.' qualified_name
 			{ /* exp.type::name becomes exp.*(&type::name) */
 			  /* Note: this doesn't work if name is a
 			     static member!  FIXME */
-			  write_exp_elt_opcode (UNOP_ADDR);
-			  write_exp_elt_opcode (STRUCTOP_MEMBER); }
+			  write_exp_elt_opcode (ps, UNOP_ADDR);
+			  write_exp_elt_opcode (ps, STRUCTOP_MEMBER); }
 	;
 
 exp	:	exp DOT_STAR exp
-			{ write_exp_elt_opcode (STRUCTOP_MEMBER); }
+			{ write_exp_elt_opcode (ps, STRUCTOP_MEMBER); }
 	;
 
 exp	:	exp '[' exp1 ']'
-			{ write_exp_elt_opcode (BINOP_SUBSCRIPT); }
+			{ write_exp_elt_opcode (ps, BINOP_SUBSCRIPT); }
 	;
 
 exp	:	exp '(' 
@@ -387,20 +391,20 @@ exp	:	exp '('
 			   being accumulated by an outer function call.  */
 			{ start_arglist (); }
 		arglist ')'	%prec ARROW
-			{ write_exp_elt_opcode (OP_FUNCALL);
-			  write_exp_elt_longcst ((LONGEST) end_arglist ());
-			  write_exp_elt_opcode (OP_FUNCALL); }
+			{ write_exp_elt_opcode (ps, OP_FUNCALL);
+			  write_exp_elt_longcst (ps, (LONGEST) end_arglist ());
+			  write_exp_elt_opcode (ps, OP_FUNCALL); }
 	;
 
 exp	:	UNKNOWN_CPP_NAME '('
 			{
 			  /* This could potentially be a an argument defined
 			     lookup function (Koenig).  */
-			  write_exp_elt_opcode (OP_ADL_FUNC);
-			  write_exp_elt_block (expression_context_block);
-			  write_exp_elt_sym (NULL); /* Placeholder.  */
-			  write_exp_string ($1.stoken);
-			  write_exp_elt_opcode (OP_ADL_FUNC);
+			  write_exp_elt_opcode (ps, OP_ADL_FUNC);
+			  write_exp_elt_block (ps, expression_context_block);
+			  write_exp_elt_sym (ps, NULL); /* Placeholder.  */
+			  write_exp_string (ps, $1.stoken);
+			  write_exp_elt_opcode (ps, OP_ADL_FUNC);
 
 			/* This is to save the value of arglist_len
 			   being accumulated by an outer function call.  */
@@ -409,9 +413,9 @@ exp	:	UNKNOWN_CPP_NAME '('
 			}
 		arglist ')'	%prec ARROW
 			{
-			  write_exp_elt_opcode (OP_FUNCALL);
-			  write_exp_elt_longcst ((LONGEST) end_arglist ());
-			  write_exp_elt_opcode (OP_FUNCALL);
+			  write_exp_elt_opcode (ps, OP_FUNCALL);
+			  write_exp_elt_longcst (ps, (LONGEST) end_arglist ());
+			  write_exp_elt_opcode (ps, OP_FUNCALL);
 			}
 	;
 
@@ -432,12 +436,12 @@ arglist	:	arglist ',' exp   %prec ABOVE_COMMA
 
 exp     :       exp '(' nonempty_typelist ')' const_or_volatile
 			{ int i;
-			  write_exp_elt_opcode (TYPE_INSTANCE);
-			  write_exp_elt_longcst ((LONGEST) $<ivec>3[0]);
+			  write_exp_elt_opcode (ps, TYPE_INSTANCE);
+			  write_exp_elt_longcst (ps, (LONGEST) $<ivec>3[0]);
 			  for (i = 0; i < $<ivec>3[0]; ++i)
-			    write_exp_elt_type ($<tvec>3[i + 1]);
-			  write_exp_elt_longcst((LONGEST) $<ivec>3[0]);
-			  write_exp_elt_opcode (TYPE_INSTANCE);
+			    write_exp_elt_type (ps, $<tvec>3[i + 1]);
+			  write_exp_elt_longcst (ps, (LONGEST) $<ivec>3[0]);
+			  write_exp_elt_opcode (ps, TYPE_INSTANCE);
 			  free ($3);
 			}
 	;
@@ -446,22 +450,22 @@ rcurly	:	'}'
 			{ $$ = end_arglist () - 1; }
 	;
 exp	:	lcurly arglist rcurly	%prec ARROW
-			{ write_exp_elt_opcode (OP_ARRAY);
-			  write_exp_elt_longcst ((LONGEST) 0);
-			  write_exp_elt_longcst ((LONGEST) $3);
-			  write_exp_elt_opcode (OP_ARRAY); }
+			{ write_exp_elt_opcode (ps, OP_ARRAY);
+			  write_exp_elt_longcst (ps, (LONGEST) 0);
+			  write_exp_elt_longcst (ps, (LONGEST) $3);
+			  write_exp_elt_opcode (ps, OP_ARRAY); }
 	;
 
 exp	:	lcurly type rcurly exp  %prec UNARY
-			{ write_exp_elt_opcode (UNOP_MEMVAL);
-			  write_exp_elt_type ($2);
-			  write_exp_elt_opcode (UNOP_MEMVAL); }
+			{ write_exp_elt_opcode (ps, UNOP_MEMVAL);
+			  write_exp_elt_type (ps, $2);
+			  write_exp_elt_opcode (ps, UNOP_MEMVAL); }
 	;
 
 exp	:	'(' type ')' exp  %prec UNARY
-			{ write_exp_elt_opcode (UNOP_CAST);
-			  write_exp_elt_type ($2);
-			  write_exp_elt_opcode (UNOP_CAST); }
+			{ write_exp_elt_opcode (ps, UNOP_CAST);
+			  write_exp_elt_type (ps, $2);
+			  write_exp_elt_opcode (ps, UNOP_CAST); }
 	;
 
 exp	:	'(' exp1 ')'
@@ -471,100 +475,100 @@ exp	:	'(' exp1 ')'
 /* Binary operators in order of decreasing precedence.  */
 
 exp	:	exp '@' exp
-			{ write_exp_elt_opcode (BINOP_REPEAT); }
+			{ write_exp_elt_opcode (ps, BINOP_REPEAT); }
 	;
 
 exp	:	exp '*' exp
-			{ write_exp_elt_opcode (BINOP_MUL); }
+			{ write_exp_elt_opcode (ps, BINOP_MUL); }
 	;
 
 exp	:	exp '/' exp
-			{ write_exp_elt_opcode (BINOP_DIV); }
+			{ write_exp_elt_opcode (ps, BINOP_DIV); }
 	;
 
 exp	:	exp '%' exp
-			{ write_exp_elt_opcode (BINOP_REM); }
+			{ write_exp_elt_opcode (ps, BINOP_REM); }
 	;
 
 exp	:	exp '+' exp
-			{ write_exp_elt_opcode (BINOP_ADD); }
+			{ write_exp_elt_opcode (ps, BINOP_ADD); }
 	;
 
 exp	:	exp '-' exp
-			{ write_exp_elt_opcode (BINOP_SUB); }
+			{ write_exp_elt_opcode (ps, BINOP_SUB); }
 	;
 
 exp	:	exp LSH exp
-			{ write_exp_elt_opcode (BINOP_LSH); }
+			{ write_exp_elt_opcode (ps, BINOP_LSH); }
 	;
 
 exp	:	exp RSH exp
-			{ write_exp_elt_opcode (BINOP_RSH); }
+			{ write_exp_elt_opcode (ps, BINOP_RSH); }
 	;
 
 exp	:	exp EQUAL exp
-			{ write_exp_elt_opcode (BINOP_EQUAL); }
+			{ write_exp_elt_opcode (ps, BINOP_EQUAL); }
 	;
 
 exp	:	exp NOTEQUAL exp
-			{ write_exp_elt_opcode (BINOP_NOTEQUAL); }
+			{ write_exp_elt_opcode (ps, BINOP_NOTEQUAL); }
 	;
 
 exp	:	exp LEQ exp
-			{ write_exp_elt_opcode (BINOP_LEQ); }
+			{ write_exp_elt_opcode (ps, BINOP_LEQ); }
 	;
 
 exp	:	exp GEQ exp
-			{ write_exp_elt_opcode (BINOP_GEQ); }
+			{ write_exp_elt_opcode (ps, BINOP_GEQ); }
 	;
 
 exp	:	exp '<' exp
-			{ write_exp_elt_opcode (BINOP_LESS); }
+			{ write_exp_elt_opcode (ps, BINOP_LESS); }
 	;
 
 exp	:	exp '>' exp
-			{ write_exp_elt_opcode (BINOP_GTR); }
+			{ write_exp_elt_opcode (ps, BINOP_GTR); }
 	;
 
 exp	:	exp '&' exp
-			{ write_exp_elt_opcode (BINOP_BITWISE_AND); }
+			{ write_exp_elt_opcode (ps, BINOP_BITWISE_AND); }
 	;
 
 exp	:	exp '^' exp
-			{ write_exp_elt_opcode (BINOP_BITWISE_XOR); }
+			{ write_exp_elt_opcode (ps, BINOP_BITWISE_XOR); }
 	;
 
 exp	:	exp '|' exp
-			{ write_exp_elt_opcode (BINOP_BITWISE_IOR); }
+			{ write_exp_elt_opcode (ps, BINOP_BITWISE_IOR); }
 	;
 
 exp	:	exp ANDAND exp
-			{ write_exp_elt_opcode (BINOP_LOGICAL_AND); }
+			{ write_exp_elt_opcode (ps, BINOP_LOGICAL_AND); }
 	;
 
 exp	:	exp OROR exp
-			{ write_exp_elt_opcode (BINOP_LOGICAL_OR); }
+			{ write_exp_elt_opcode (ps, BINOP_LOGICAL_OR); }
 	;
 
 exp	:	exp '?' exp ':' exp	%prec '?'
-			{ write_exp_elt_opcode (TERNOP_COND); }
+			{ write_exp_elt_opcode (ps, TERNOP_COND); }
 	;
 			  
 exp	:	exp '=' exp
-			{ write_exp_elt_opcode (BINOP_ASSIGN); }
+			{ write_exp_elt_opcode (ps, BINOP_ASSIGN); }
 	;
 
 exp	:	exp ASSIGN_MODIFY exp
-			{ write_exp_elt_opcode (BINOP_ASSIGN_MODIFY);
-			  write_exp_elt_opcode ($2);
-			  write_exp_elt_opcode (BINOP_ASSIGN_MODIFY); }
+			{ write_exp_elt_opcode (ps, BINOP_ASSIGN_MODIFY);
+			  write_exp_elt_opcode (ps, $2);
+			  write_exp_elt_opcode (ps, BINOP_ASSIGN_MODIFY); }
 	;
 
 exp	:	INT
-			{ write_exp_elt_opcode (OP_LONG);
-			  write_exp_elt_type ($1.type);
-			  write_exp_elt_longcst ((LONGEST)($1.val));
-			  write_exp_elt_opcode (OP_LONG); }
+			{ write_exp_elt_opcode (ps, OP_LONG);
+			  write_exp_elt_type (ps, $1.type);
+			  write_exp_elt_longcst (ps, (LONGEST) ($1.val));
+			  write_exp_elt_opcode (ps, OP_LONG); }
 	;
 
 exp	:	CHAR
@@ -572,33 +576,34 @@ exp	:	CHAR
 			  struct stoken_vector vec;
 			  vec.len = 1;
 			  vec.tokens = &$1;
-			  write_exp_string_vector ($1.type, &vec);
+			  write_exp_string_vector (ps, $1.type, &vec);
 			}
 	;
 
 exp	:	NAME_OR_INT
 			{ YYSTYPE val;
-			  parse_number ($1.stoken.ptr, $1.stoken.length, 0, &val);
-			  write_exp_elt_opcode (OP_LONG);
-			  write_exp_elt_type (val.typed_val_int.type);
-			  write_exp_elt_longcst ((LONGEST)val.typed_val_int.val);
-			  write_exp_elt_opcode (OP_LONG);
+			  parse_number (ps, $1.stoken.ptr, $1.stoken.length,
+					0, &val);
+			  write_exp_elt_opcode (ps, OP_LONG);
+			  write_exp_elt_type (ps, val.typed_val_int.type);
+			  write_exp_elt_longcst (ps, (LONGEST) val.typed_val_int.val);
+			  write_exp_elt_opcode (ps, 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); }
+			{ write_exp_elt_opcode (ps, OP_DOUBLE);
+			  write_exp_elt_type (ps, $1.type);
+			  write_exp_elt_dblcst (ps, $1.dval);
+			  write_exp_elt_opcode (ps, OP_DOUBLE); }
 	;
 
 exp	:	DECFLOAT
-			{ write_exp_elt_opcode (OP_DECFLOAT);
-			  write_exp_elt_type ($1.type);
-			  write_exp_elt_decfloatcst ($1.val);
-			  write_exp_elt_opcode (OP_DECFLOAT); }
+			{ write_exp_elt_opcode (ps, OP_DECFLOAT);
+			  write_exp_elt_type (ps, $1.type);
+			  write_exp_elt_decfloatcst (ps, $1.val);
+			  write_exp_elt_opcode (ps, OP_DECFLOAT); }
 	;
 
 exp	:	variable
@@ -606,44 +611,45 @@ exp	:	variable
 
 exp	:	VARIABLE
 			{
-			  write_dollar_variable ($1);
+			  write_dollar_variable (ps, $1);
 			}
 	;
 
 exp	:	SIZEOF '(' type ')'	%prec UNARY
-			{ write_exp_elt_opcode (OP_LONG);
-			  write_exp_elt_type (lookup_signed_typename
-					      (parse_language, parse_gdbarch,
+			{ write_exp_elt_opcode (ps, OP_LONG);
+			  write_exp_elt_type (ps, lookup_signed_typename
+					      (parse_language (ps),
+					       parse_gdbarch (ps),
 					       "int"));
 			  CHECK_TYPEDEF ($3);
-			  write_exp_elt_longcst ((LONGEST) TYPE_LENGTH ($3));
-			  write_exp_elt_opcode (OP_LONG); }
+			  write_exp_elt_longcst (ps, (LONGEST) TYPE_LENGTH ($3));
+			  write_exp_elt_opcode (ps, OP_LONG); }
 	;
 
 exp	:	REINTERPRET_CAST '<' type '>' '(' exp ')' %prec UNARY
-			{ write_exp_elt_opcode (UNOP_REINTERPRET_CAST);
-			  write_exp_elt_type ($3);
-			  write_exp_elt_opcode (UNOP_REINTERPRET_CAST); }
+			{ write_exp_elt_opcode (ps, UNOP_REINTERPRET_CAST);
+			  write_exp_elt_type (ps, $3);
+			  write_exp_elt_opcode (ps, UNOP_REINTERPRET_CAST); }
 	;
 
 exp	:	STATIC_CAST '<' type '>' '(' exp ')' %prec UNARY
-			{ write_exp_elt_opcode (UNOP_CAST);
-			  write_exp_elt_type ($3);
-			  write_exp_elt_opcode (UNOP_CAST); }
+			{ write_exp_elt_opcode (ps, UNOP_CAST);
+			  write_exp_elt_type (ps, $3);
+			  write_exp_elt_opcode (ps, UNOP_CAST); }
 	;
 
 exp	:	DYNAMIC_CAST '<' type '>' '(' exp ')' %prec UNARY
-			{ write_exp_elt_opcode (UNOP_DYNAMIC_CAST);
-			  write_exp_elt_type ($3);
-			  write_exp_elt_opcode (UNOP_DYNAMIC_CAST); }
+			{ write_exp_elt_opcode (ps, UNOP_DYNAMIC_CAST);
+			  write_exp_elt_type (ps, $3);
+			  write_exp_elt_opcode (ps, UNOP_DYNAMIC_CAST); }
 	;
 
 exp	:	CONST_CAST '<' type '>' '(' exp ')' %prec UNARY
 			{ /* We could do more error checking here, but
 			     it doesn't seem worthwhile.  */
-			  write_exp_elt_opcode (UNOP_CAST);
-			  write_exp_elt_type ($3);
-			  write_exp_elt_opcode (UNOP_CAST); }
+			  write_exp_elt_opcode (ps, UNOP_CAST);
+			  write_exp_elt_type (ps, $3);
+			  write_exp_elt_opcode (ps, UNOP_CAST); }
 	;
 
 string_exp:
@@ -708,7 +714,7 @@ exp	:	string_exp
 				}
 			    }
 
-			  write_exp_string_vector (type, &$1);
+			  write_exp_string_vector (ps, type, &$1);
 			  for (i = 0; i < $1.len; ++i)
 			    free ($1.tokens[i].ptr);
 			  free ($1.tokens);
@@ -717,17 +723,17 @@ exp	:	string_exp
 
 /* C++.  */
 exp     :       TRUEKEYWORD    
-                        { write_exp_elt_opcode (OP_LONG);
-                          write_exp_elt_type (parse_type->builtin_bool);
-                          write_exp_elt_longcst ((LONGEST) 1);
-                          write_exp_elt_opcode (OP_LONG); }
+                        { write_exp_elt_opcode (ps, OP_LONG);
+                          write_exp_elt_type (ps, parse_type (ps)->builtin_bool);
+                          write_exp_elt_longcst (ps, (LONGEST) 1);
+                          write_exp_elt_opcode (ps, OP_LONG); }
 	;
 
 exp     :       FALSEKEYWORD   
-                        { write_exp_elt_opcode (OP_LONG);
-                          write_exp_elt_type (parse_type->builtin_bool);
-                          write_exp_elt_longcst ((LONGEST) 0);
-                          write_exp_elt_opcode (OP_LONG); }
+                        { write_exp_elt_opcode (ps, OP_LONG);
+                          write_exp_elt_type (ps, parse_type (ps)->builtin_bool);
+                          write_exp_elt_longcst (ps, (LONGEST) 0);
+                          write_exp_elt_opcode (ps, OP_LONG); }
 	;
 
 /* end of C++.  */
@@ -765,9 +771,9 @@ variable:	name_not_typename ENTRY
 				     "parameters, not for \"%s\""),
 				   copy_name ($1.stoken));
 
-			  write_exp_elt_opcode (OP_VAR_ENTRY_VALUE);
-			  write_exp_elt_sym (sym);
-			  write_exp_elt_opcode (OP_VAR_ENTRY_VALUE);
+			  write_exp_elt_opcode (ps, OP_VAR_ENTRY_VALUE);
+			  write_exp_elt_sym (ps, sym);
+			  write_exp_elt_opcode (ps, OP_VAR_ENTRY_VALUE);
 			}
 	;
 
@@ -786,11 +792,11 @@ variable:	block COLONCOLON name
 				innermost_block = block_found;
 			    }
 
-			  write_exp_elt_opcode (OP_VAR_VALUE);
+			  write_exp_elt_opcode (ps, 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); }
+			  write_exp_elt_block (ps, block_found);
+			  write_exp_elt_sym (ps, sym);
+			  write_exp_elt_opcode (ps, OP_VAR_VALUE); }
 	;
 
 qualified_name:	TYPENAME COLONCOLON name
@@ -803,10 +809,10 @@ qualified_name:	TYPENAME COLONCOLON name
 			    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);
+			  write_exp_elt_opcode (ps, OP_SCOPE);
+			  write_exp_elt_type (ps, type);
+			  write_exp_string (ps, $3);
+			  write_exp_elt_opcode (ps, OP_SCOPE);
 			}
 	|	TYPENAME COLONCOLON '~' name
 			{
@@ -827,10 +833,10 @@ qualified_name:	TYPENAME COLONCOLON name
 
 			  /* Check for valid destructor name.  */
 			  destructor_name_p (tmp_token.ptr, $1.type);
-			  write_exp_elt_opcode (OP_SCOPE);
-			  write_exp_elt_type (type);
-			  write_exp_string (tmp_token);
-			  write_exp_elt_opcode (OP_SCOPE);
+			  write_exp_elt_opcode (ps, OP_SCOPE);
+			  write_exp_elt_type (ps, type);
+			  write_exp_string (ps, tmp_token);
+			  write_exp_elt_opcode (ps, OP_SCOPE);
 			}
 	|	TYPENAME COLONCOLON name COLONCOLON name
 			{
@@ -853,16 +859,16 @@ variable:	qualified_name
 					   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);
+			      write_exp_elt_opcode (ps, OP_VAR_VALUE);
+			      write_exp_elt_block (ps, NULL);
+			      write_exp_elt_sym (ps, sym);
+			      write_exp_elt_opcode (ps, OP_VAR_VALUE);
 			      break;
 			    }
 
 			  msymbol = lookup_minimal_symbol (name, NULL, NULL);
 			  if (msymbol != NULL)
-			    write_exp_msymbol (msymbol);
+			    write_exp_msymbol (ps, msymbol);
 			  else if (!have_full_symbols () && !have_partial_symbols ())
 			    error (_("No symbol table is loaded.  Use the \"file\" command."));
 			  else
@@ -883,13 +889,13 @@ variable:	name_not_typename
 				    innermost_block = block_found;
 				}
 
-			      write_exp_elt_opcode (OP_VAR_VALUE);
+			      write_exp_elt_opcode (ps, 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);
+			      write_exp_elt_block (ps, NULL);
+			      write_exp_elt_sym (ps, sym);
+			      write_exp_elt_opcode (ps, OP_VAR_VALUE);
 			    }
 			  else if ($1.is_a_field_of_this)
 			    {
@@ -900,11 +906,11 @@ variable:	name_not_typename
 				  || 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);
+			      write_exp_elt_opcode (ps, OP_THIS);
+			      write_exp_elt_opcode (ps, OP_THIS);
+			      write_exp_elt_opcode (ps, STRUCTOP_PTR);
+			      write_exp_string (ps, $1.stoken);
+			      write_exp_elt_opcode (ps, STRUCTOP_PTR);
 			    }
 			  else
 			    {
@@ -914,7 +920,7 @@ variable:	name_not_typename
 			      msymbol =
 				lookup_minimal_symbol (arg, NULL, NULL);
 			      if (msymbol != NULL)
-				write_exp_msymbol (msymbol);
+				write_exp_msymbol (ps, msymbol);
 			      else if (!have_full_symbols () && !have_partial_symbols ())
 				error (_("No symbol table is loaded.  Use the \"file\" command."));
 			      else
@@ -925,7 +931,7 @@ variable:	name_not_typename
 	;
 
 space_identifier : '@' NAME
-		{ push_type_address_space (copy_name ($2.stoken));
+		{ push_type_address_space (ps, copy_name ($2.stoken));
 		  push_type (tp_space_identifier);
 		}
 	;
@@ -1004,115 +1010,115 @@ typebase  /* Implements (approximately): (type-qualifier)* type-specifier */
 	:	TYPENAME
 			{ $$ = $1.type; }
 	|	INT_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "int"); }
 	|	LONG
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long"); }
 	|	SHORT
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "short"); }
 	|	LONG INT_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long"); }
 	|	LONG SIGNED_KEYWORD INT_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long"); }
 	|	LONG SIGNED_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long"); }
 	|	SIGNED_KEYWORD LONG INT_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long"); }
 	|	UNSIGNED LONG INT_KEYWORD
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "long"); }
 	|	LONG UNSIGNED INT_KEYWORD
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "long"); }
 	|	LONG UNSIGNED
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "long"); }
 	|	LONG LONG
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long long"); }
 	|	LONG LONG INT_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long long"); }
 	|	LONG LONG SIGNED_KEYWORD INT_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long long"); }
 	|	LONG LONG SIGNED_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long long"); }
 	|	SIGNED_KEYWORD LONG LONG
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long long"); }
 	|	SIGNED_KEYWORD LONG LONG INT_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "long long"); }
 	|	UNSIGNED LONG LONG
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "long long"); }
 	|	UNSIGNED LONG LONG INT_KEYWORD
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "long long"); }
 	|	LONG LONG UNSIGNED
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "long long"); }
 	|	LONG LONG UNSIGNED INT_KEYWORD
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "long long"); }
 	|	SHORT INT_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "short"); }
 	|	SHORT SIGNED_KEYWORD INT_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "short"); }
 	|	SHORT SIGNED_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "short"); }
 	|	UNSIGNED SHORT INT_KEYWORD
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "short"); }
 	|	SHORT UNSIGNED 
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "short"); }
 	|	SHORT UNSIGNED INT_KEYWORD
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "short"); }
 	|	DOUBLE_KEYWORD
-			{ $$ = lookup_typename (parse_language, parse_gdbarch,
+			{ $$ = lookup_typename (parse_language (ps), parse_gdbarch (ps),
 						"double", (struct block *) NULL,
 						0); }
 	|	LONG DOUBLE_KEYWORD
-			{ $$ = lookup_typename (parse_language, parse_gdbarch,
+			{ $$ = lookup_typename (parse_language (ps), parse_gdbarch (ps),
 						"long double",
 						(struct block *) NULL, 0); }
 	|	STRUCT name
@@ -1128,20 +1134,20 @@ typebase  /* Implements (approximately): (type-qualifier)* type-specifier */
 			{ $$ = lookup_enum (copy_name ($2),
 					    expression_context_block); }
 	|	UNSIGNED typename
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 TYPE_NAME($2.type)); }
 	|	UNSIGNED
-			{ $$ = lookup_unsigned_typename (parse_language,
-							 parse_gdbarch,
+			{ $$ = lookup_unsigned_typename (parse_language (ps),
+							 parse_gdbarch (ps),
 							 "int"); }
 	|	SIGNED_KEYWORD typename
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       TYPE_NAME($2.type)); }
 	|	SIGNED_KEYWORD
-			{ $$ = lookup_signed_typename (parse_language,
-						       parse_gdbarch,
+			{ $$ = lookup_signed_typename (parse_language (ps),
+						       parse_gdbarch (ps),
 						       "int"); }
                 /* It appears that this rule for templates is never
                    reduced; template recognition happens by lookahead
@@ -1161,24 +1167,24 @@ typename:	TYPENAME
 		{
 		  $$.stoken.ptr = "int";
 		  $$.stoken.length = 3;
-		  $$.type = lookup_signed_typename (parse_language,
-						    parse_gdbarch,
+		  $$.type = lookup_signed_typename (parse_language (ps),
+						    parse_gdbarch (ps),
 						    "int");
 		}
 	|	LONG
 		{
 		  $$.stoken.ptr = "long";
 		  $$.stoken.length = 4;
-		  $$.type = lookup_signed_typename (parse_language,
-						    parse_gdbarch,
+		  $$.type = lookup_signed_typename (parse_language (ps),
+						    parse_gdbarch (ps),
 						    "long");
 		}
 	|	SHORT
 		{
 		  $$.stoken.ptr = "short";
 		  $$.stoken.length = 5;
-		  $$.type = lookup_signed_typename (parse_language,
-						    parse_gdbarch,
+		  $$.type = lookup_signed_typename (parse_language (ps),
+						    parse_gdbarch (ps),
 						    "short");
 		}
 	;
@@ -1388,7 +1394,8 @@ operator_stoken (const char *op)
 /*** 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 *ps, 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.  */
@@ -1423,9 +1430,9 @@ parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere)
 	{
 	  p[len - 2] = '\0';
 	  putithere->typed_val_decfloat.type
-	    = parse_type->builtin_decfloat;
+	    = parse_type (ps)->builtin_decfloat;
 	  decimal_from_string (putithere->typed_val_decfloat.val, 4,
-			       gdbarch_byte_order (parse_gdbarch), p);
+			       gdbarch_byte_order (parse_gdbarch (ps)), p);
 	  p[len - 2] = 'd';
 	  return DECFLOAT;
 	}
@@ -1434,9 +1441,9 @@ parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere)
 	{
 	  p[len - 2] = '\0';
 	  putithere->typed_val_decfloat.type
-	    = parse_type->builtin_decdouble;
+	    = parse_type (ps)->builtin_decdouble;
 	  decimal_from_string (putithere->typed_val_decfloat.val, 8,
-			       gdbarch_byte_order (parse_gdbarch), p);
+			       gdbarch_byte_order (parse_gdbarch (ps)), p);
 	  p[len - 2] = 'd';
 	  return DECFLOAT;
 	}
@@ -1445,14 +1452,14 @@ parse_number (char *p, int len, int parsed_float, YYSTYPE *putithere)
 	{
 	  p[len - 2] = '\0';
 	  putithere->typed_val_decfloat.type
-	    = parse_type->builtin_declong;
+	    = parse_type (ps)->builtin_declong;
 	  decimal_from_string (putithere->typed_val_decfloat.val, 16,
-			       gdbarch_byte_order (parse_gdbarch), p);
+			       gdbarch_byte_order (parse_gdbarch (ps)), p);
 	  p[len - 2] = 'd';
 	  return DECFLOAT;
 	}
 
-      if (! parse_c_float (parse_gdbarch, p, len,
+      if (! parse_c_float (parse_gdbarch (ps), p, len,
 			   &putithere->typed_val_float.dval,
 			   &putithere->typed_val_float.type))
 	return ERROR;
@@ -1568,9 +1575,9 @@ 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 (parse_gdbarch (ps)) - 2)) == 0)
     {
-      high_bit = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch) - 1);
+      high_bit = ((ULONGEST)1) << (gdbarch_int_bit (parse_gdbarch (ps)) - 1);
 
       /* A large decimal (not hex or octal) constant (between INT_MAX
 	 and UINT_MAX) is a long or unsigned long, according to ANSI,
@@ -1578,28 +1585,28 @@ 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 (ps)->builtin_unsigned_int;
+      signed_type = parse_type (ps)->builtin_int;
     }
   else if (long_p <= 1
-	   && (un >> (gdbarch_long_bit (parse_gdbarch) - 2)) == 0)
+	   && (un >> (gdbarch_long_bit (parse_gdbarch (ps)) - 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 (parse_gdbarch (ps)) - 1);
+      unsigned_type = parse_type (ps)->builtin_unsigned_long;
+      signed_type = parse_type (ps)->builtin_long;
     }
   else
     {
       int shift;
       if (sizeof (ULONGEST) * HOST_CHAR_BIT 
-	  < gdbarch_long_long_bit (parse_gdbarch))
+	  < gdbarch_long_long_bit (parse_gdbarch (ps)))
 	/* 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 (parse_gdbarch (ps)) - 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 (ps)->builtin_unsigned_long_long;
+      signed_type = parse_type (ps)->builtin_long_long;
     }
 
    putithere->typed_val_int.val = n;
@@ -2066,7 +2073,7 @@ static int last_was_structop;
 /* Read one token, getting characters through lexptr.  */
 
 static int
-lex_one_token (void)
+lex_one_token (struct parser_state *ps)
 {
   int c;
   int namelen;
@@ -2098,7 +2105,7 @@ lex_one_token (void)
     if (strncmp (tokstart, tokentab3[i].operator, 3) == 0)
       {
 	if (tokentab3[i].cxx_only
-	    && parse_language->la_language != language_cplus)
+	    && parse_language (ps)->la_language != language_cplus)
 	  break;
 
 	lexptr += 3;
@@ -2111,7 +2118,7 @@ lex_one_token (void)
     if (strncmp (tokstart, tokentab2[i].operator, 2) == 0)
       {
 	if (tokentab2[i].cxx_only
-	    && parse_language->la_language != language_cplus)
+	    && parse_language (ps)->la_language != language_cplus)
 	  break;
 
 	lexptr += 2;
@@ -2233,7 +2240,8 @@ lex_one_token (void)
 				  && (*p < 'A' || *p > 'Z')))
 	      break;
 	  }
-	toktype = parse_number (tokstart, p - tokstart, got_dot|got_e, &yylval);
+	toktype = parse_number (ps, tokstart, p - tokstart, got_dot|got_e,
+				&yylval);
         if (toktype == ERROR)
 	  {
 	    char *err_copy = (char *) alloca (p - tokstart + 1);
@@ -2385,7 +2393,7 @@ lex_one_token (void)
     if (strcmp (copy, ident_tokens[i].operator) == 0)
       {
 	if (ident_tokens[i].cxx_only
-	    && parse_language->la_language != language_cplus)
+	    && parse_language (ps)->la_language != language_cplus)
 	  break;
 
 	/* It is ok to always set this, even though we don't always
@@ -2427,7 +2435,7 @@ static struct obstack name_obstack;
    in which lookups start; this can be NULL to mean the global
    scope.  */
 static int
-classify_name (struct block *block)
+classify_name (struct parser_state *ps, struct block *block)
 {
   struct symbol *sym;
   char *copy;
@@ -2436,7 +2444,7 @@ classify_name (struct block *block)
   copy = copy_name (yylval.sval);
 
   sym = lookup_symbol (copy, block, VAR_DOMAIN, 
-		       parse_language->la_language == language_cplus
+		       parse_language (ps)->la_language == language_cplus
 		       ? &is_a_field_of_this : (int *) NULL);
 
   if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK)
@@ -2465,8 +2473,8 @@ classify_name (struct block *block)
     }
 
   yylval.tsym.type
-    = language_lookup_primitive_type_by_name (parse_language,
-					      parse_gdbarch, copy);
+    = language_lookup_primitive_type_by_name (parse_language (ps),
+					      parse_gdbarch (ps), copy);
   if (yylval.tsym.type != NULL)
     return TYPENAME;
 
@@ -2478,7 +2486,7 @@ classify_name (struct block *block)
 	  || (copy[0] >= 'A' && copy[0] < 'A' + input_radix - 10)))
     {
       YYSTYPE newlval;	/* Its value is ignored.  */
-      int hextype = parse_number (copy, yylval.sval.length, 0, &newlval);
+      int hextype = parse_number (ps, copy, yylval.sval.length, 0, &newlval);
       if (hextype == INT)
 	{
 	  yylval.ssym.sym = sym;
@@ -2492,7 +2500,7 @@ classify_name (struct block *block)
   yylval.ssym.is_a_field_of_this = is_a_field_of_this;
 
   if (sym == NULL
-      && parse_language->la_language == language_cplus
+      && parse_language (ps)->la_language == language_cplus
       && !is_a_field_of_this
       && !lookup_minimal_symbol (copy, NULL, NULL))
     return UNKNOWN_CPP_NAME;
@@ -2506,13 +2514,14 @@ classify_name (struct block *block)
    this function returns NAME, it might not have updated `yylval'.
    This is ok because the caller only cares about TYPENAME.  */
 static int
-classify_inner_name (struct block *block, int first_name)
+classify_inner_name (struct parser_state *ps, struct block *block,
+		     int first_name)
 {
   struct type *type, *new_type;
   char *copy;
 
   if (first_name)
-    return classify_name (block);
+    return classify_name (ps, block);
 
   type = check_typedef (yylval.tsym.type);
   if (TYPE_CODE (type) != TYPE_CODE_STRUCT
@@ -2544,7 +2553,7 @@ classify_inner_name (struct block *block, int first_name)
    this is still an improvement over the earlier approach, and will
    suffice until we move to better parsing technology.  */
 static int
-yylex (void)
+yylex (struct parser_state *ps)
 {
   token_and_value current;
   int first_was_coloncolon, last_was_coloncolon, first_iter;
@@ -2558,10 +2567,10 @@ yylex (void)
     }
   popping = 0;
 
-  current.token = lex_one_token ();
+  current.token = lex_one_token (ps);
   if (current.token == NAME)
-    current.token = classify_name (expression_context_block);
-  if (parse_language->la_language != language_cplus
+    current.token = classify_name (ps, expression_context_block);
+  if (parse_language (ps)->la_language != language_cplus
       || (current.token != TYPENAME && current.token != COLONCOLON))
     return current.token;
 
@@ -2576,14 +2585,14 @@ yylex (void)
     {
       token_and_value next;
 
-      next.token = lex_one_token ();
+      next.token = lex_one_token (ps);
       next.value = yylval;
 
       if (next.token == NAME && last_was_coloncolon)
 	{
 	  int classification;
 
-	  classification = classify_inner_name (first_was_coloncolon
+	  classification = classify_inner_name (ps, first_was_coloncolon
 						? NULL
 						: expression_context_block,
 						first_iter);
@@ -2648,7 +2657,7 @@ yylex (void)
 }
 
 int
-c_parse (void)
+c_parse (struct parser_state *ps)
 {
   int result;
   struct cleanup *back_to = make_cleanup (free_current_contents,
@@ -2682,14 +2691,14 @@ c_parse (void)
   obstack_init (&name_obstack);
   make_cleanup_obstack_free (&name_obstack);
 
-  result = yyparse ();
+  result = yyparse (ps);
   do_cleanups (back_to);
   return result;
 }
 
 
 void
-yyerror (char *msg)
+yyerror (struct parser_state *ps, char *msg)
 {
   if (prev_lexptr)
     lexptr = prev_lexptr;
diff --git a/gdb/c-lang.h b/gdb/c-lang.h
index e8c632f..1003b8d 100644
--- a/gdb/c-lang.h
+++ b/gdb/c-lang.h
@@ -24,6 +24,7 @@
 
 struct ui_file;
 struct language_arch_info;
+struct parser_state;
 
 #include "value.h"
 #include "macroexp.h"
@@ -57,9 +58,9 @@ enum c_string_type
 
 /* Defined in c-exp.y.  */
 
-extern int c_parse (void);
+extern int c_parse (struct parser_state *);
 
-extern void c_error (char *);
+extern void c_error (struct parser_state *, char *);
 
 extern int c_parse_escape (char **, struct obstack *);


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