--- /dev/null
+/* YACC parser for D expressions, for GDB.
+
+ Copyright (C) 2014 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* This file is derived from c-exp.y, jv-exp.y. */
+
+/* Parse a D expression from text in a string,
+ and return the result as a struct expression pointer.
+ That structure contains arithmetic operations in reverse polish,
+ with constants represented by operations that are followed by special data.
+ See expression.h for the details of the format.
+ What is important here is that it can be built up sequentially
+ during the process of parsing; the lower levels of the tree always
+ come first in the result.
+
+ Note that malloc's and realloc's in this file are transformed to
+ xmalloc and xrealloc respectively by the same sed command in the
+ makefile that remaps any other malloc/realloc inserted by the parser
+ generator. Doing this with #defines and trying to control the interaction
+ with include files (<malloc.h> and <stdlib.h> for example) just became
+ too messy, particularly when such includes can be inserted at random
+ times by the parser generator. */
+
+%{
+
+#include "defs.h"
+#include <string.h>
+#include <ctype.h>
+#include "expression.h"
+#include "value.h"
+#include "parser-defs.h"
+#include "language.h"
+#include "c-lang.h"
+#include "d-lang.h"
+#include "bfd.h" /* Required by objfiles.h. */
+#include "symfile.h" /* Required by objfiles.h. */
+#include "objfiles.h" /* For have_full_symbols and have_partial_symbols */
+#include "charset.h"
+#include "block.h"
+
+#define parse_type(ps) builtin_type (parse_gdbarch (ps))
+#define parse_d_type(ps) builtin_d_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
+ 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 d_maxdepth
+#define yyparse d_parse_internal
+#define yylex d_lex
+#define yyerror d_error
+#define yylval d_lval
+#define yychar d_char
+#define yydebug d_debug
+#define yypact d_pact
+#define yyr1 d_r1
+#define yyr2 d_r2
+#define yydef d_def
+#define yychk d_chk
+#define yypgo d_pgo
+#define yyact d_act
+#define yyexca d_exca
+#define yyerrflag d_errflag
+#define yynerrs d_nerrs
+#define yyps d_ps
+#define yypv d_pv
+#define yys d_s
+#define yy_yys d_yys
+#define yystate d_state
+#define yytmp d_tmp
+#define yyv d_v
+#define yy_yyv d_yyv
+#define yyval d_val
+#define yylloc d_lloc
+#define yyreds d_reds /* With YYDEBUG defined */
+#define yytoks d_toks /* With YYDEBUG defined */
+#define yyname d_name /* With YYDEBUG defined */
+#define yyrule d_rule /* With YYDEBUG defined */
+#define yylhs d_yylhs
+#define yylen d_yylen
+#define yydefre d_yydefred
+#define yydgoto d_yydgoto
+#define yysindex d_yysindex
+#define yyrindex d_yyrindex
+#define yygindex d_yygindex
+#define yytable d_yytable
+#define yycheck d_yycheck
+#define yyss d_yyss
+#define yysslim d_yysslim
+#define yyssp d_yyssp
+#define yystacksize d_yystacksize
+#define yyvs d_yyvs
+#define yyvsp d_yyvsp
+
+#ifndef YYDEBUG
+#define YYDEBUG 1 /* Default to yydebug support */
+#endif
+
+#define YYFPRINTF parser_fprintf
+
+/* The state of the parser, used internally when we are parsing the
+ expression. */
+
+static struct parser_state *pstate = NULL;
+
+int yyparse (void);
+
+static int yylex (void);
+
+void yyerror (char *);
+
+%}
+
+/* Although the yacc "value" of an expression is not used,
+ since the result is stored in the structure being created,
+ other node types do have values. */
+
+%union
+ {
+ struct {
+ LONGEST val;
+ struct type *type;
+ } typed_val_int;
+ struct {
+ DOUBLEST dval;
+ struct type *type;
+ } typed_val_float;
+ struct symbol *sym;
+ struct type *tval;
+ struct typed_stoken tsval;
+ struct stoken sval;
+ struct ttype tsym;
+ struct symtoken ssym;
+ int ival;
+ struct block *bval;
+ enum exp_opcode opcode;
+ struct stoken_vector svec;
+ }
+
+%{
+/* YYSTYPE gets defined by %union */
+static int parse_number (struct parser_state *, const char *,
+ int, int, YYSTYPE *);
+
+static void push_expression_name (struct parser_state *, struct stoken);
+%}
+
+%token <sval> IDENTIFIER
+%token <tsym> TYPENAME
+%token <voidval> COMPLETE
+
+/* A NAME_OR_INT is a symbol which is not known in the symbol table,
+ but which would parse as a valid number in the current input radix.
+ E.g. "c" when input_radix==16. Depending on the parse, it will be
+ turned into a name or into a number. */
+
+%token <sval> NAME_OR_INT
+
+%token <typed_val_int> INTEGER_LITERAL
+%token <typed_val_float> FLOAT_LITERAL
+%token <tsval> CHARACTER_LITERAL
+%token <tsval> STRING_LITERAL
+
+%type <svec> StringExp
+%type <tval> BasicType TypeExp
+%type <sval> IdentifierExp
+%type <ival> ArrayLiteral
+
+%token ENTRY
+%token ERROR
+
+/* Keywords that have a constant value. */
+%token TRUE_KEYWORD FALSE_KEYWORD NULL_KEYWORD
+/* Class 'super' accessor. */
+%token SUPER_KEYWORD
+/* Properties. */
+%token CAST_KEYWORD SIZEOF_KEYWORD
+%token TYPEOF_KEYWORD TYPEID_KEYWORD
+%token INIT_KEYWORD
+/* Comparison keywords. */
+/* Type storage classes. */
+%token IMMUTABLE_KEYWORD CONST_KEYWORD SHARED_KEYWORD
+/* Non-scalar type keywords. */
+%token STRUCT_KEYWORD UNION_KEYWORD
+%token CLASS_KEYWORD INTERFACE_KEYWORD
+%token ENUM_KEYWORD TEMPLATE_KEYWORD
+%token DELEGATE_KEYWORD FUNCTION_KEYWORD
+
+%token <sval> DOLLAR_VARIABLE
+
+%token <opcode> ASSIGN_MODIFY
+
+%left ','
+%right '=' ASSIGN_MODIFY
+%right '?'
+%left OROR
+%left ANDAND
+%left '|'
+%left '^'
+%left '&'
+%left EQUAL NOTEQUAL '<' '>' LEQ GEQ
+%right LSH RSH
+%left '+' '-'
+%left '*' '/' '%'
+%right HATHAT
+%left IDENTITY NOTIDENTITY
+%right INCREMENT DECREMENT
+%right '.' '[' '('
+%token DOTDOT
+
+\f
+%%
+
+start :
+ Expression
+| TypeExp
+;
+
+/* Expressions, including the comma operator. */
+
+Expression:
+ CommaExpression
+;
+
+CommaExpression:
+ AssignExpression
+| AssignExpression ',' CommaExpression
+ { write_exp_elt_opcode (pstate, BINOP_COMMA); }
+;
+
+AssignExpression:
+ ConditionalExpression
+| ConditionalExpression '=' AssignExpression
+ { write_exp_elt_opcode (pstate, BINOP_ASSIGN); }
+| ConditionalExpression ASSIGN_MODIFY AssignExpression
+ { write_exp_elt_opcode (pstate, BINOP_ASSIGN_MODIFY);
+ write_exp_elt_opcode (pstate, $2);
+ write_exp_elt_opcode (pstate, BINOP_ASSIGN_MODIFY); }
+;
+
+ConditionalExpression:
+ OrOrExpression
+| OrOrExpression '?' Expression ':' ConditionalExpression
+ { write_exp_elt_opcode (pstate, TERNOP_COND); }
+;
+
+OrOrExpression:
+ AndAndExpression
+| OrOrExpression OROR AndAndExpression
+ { write_exp_elt_opcode (pstate, BINOP_LOGICAL_OR); }
+;
+
+AndAndExpression:
+ OrExpression
+| AndAndExpression ANDAND OrExpression
+ { write_exp_elt_opcode (pstate, BINOP_LOGICAL_AND); }
+;
+
+OrExpression:
+ XorExpression
+| OrExpression '|' XorExpression
+ { write_exp_elt_opcode (pstate, BINOP_BITWISE_IOR); }
+;
+
+XorExpression:
+ AndExpression
+| XorExpression '^' AndExpression
+ { write_exp_elt_opcode (pstate, BINOP_BITWISE_XOR); }
+;
+
+AndExpression:
+ CmpExpression
+| AndExpression '&' CmpExpression
+ { write_exp_elt_opcode (pstate, BINOP_BITWISE_AND); }
+;
+
+CmpExpression:
+ ShiftExpression
+| EqualExpression
+| IdentityExpression
+| RelExpression
+;
+
+EqualExpression:
+ ShiftExpression EQUAL ShiftExpression
+ { write_exp_elt_opcode (pstate, BINOP_EQUAL); }
+| ShiftExpression NOTEQUAL ShiftExpression
+ { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); }
+;
+
+IdentityExpression:
+ ShiftExpression IDENTITY ShiftExpression
+ { write_exp_elt_opcode (pstate, BINOP_EQUAL); }
+| ShiftExpression NOTIDENTITY ShiftExpression
+ { write_exp_elt_opcode (pstate, BINOP_NOTEQUAL); }
+;
+
+RelExpression:
+ ShiftExpression '<' ShiftExpression
+ { write_exp_elt_opcode (pstate, BINOP_LESS); }
+| ShiftExpression LEQ ShiftExpression
+ { write_exp_elt_opcode (pstate, BINOP_LEQ); }
+| ShiftExpression '>' ShiftExpression
+ { write_exp_elt_opcode (pstate, BINOP_GTR); }
+| ShiftExpression GEQ ShiftExpression
+ { write_exp_elt_opcode (pstate, BINOP_GEQ); }
+;
+
+ShiftExpression:
+ AddExpression
+| ShiftExpression LSH AddExpression
+ { write_exp_elt_opcode (pstate, BINOP_LSH); }
+| ShiftExpression RSH AddExpression
+ { write_exp_elt_opcode (pstate, BINOP_RSH); }
+;
+
+AddExpression:
+ MulExpression
+| AddExpression '+' MulExpression
+ { write_exp_elt_opcode (pstate, BINOP_ADD); }
+| AddExpression '-' MulExpression
+ { write_exp_elt_opcode (pstate, BINOP_SUB); }
+| AddExpression '~' MulExpression
+ { write_exp_elt_opcode (pstate, BINOP_CONCAT); }
+;
+
+MulExpression:
+ UnaryExpression
+| MulExpression '*' UnaryExpression
+ { write_exp_elt_opcode (pstate, BINOP_MUL); }
+| MulExpression '/' UnaryExpression
+ { write_exp_elt_opcode (pstate, BINOP_DIV); }
+| MulExpression '%' UnaryExpression
+ { write_exp_elt_opcode (pstate, BINOP_REM); }
+
+UnaryExpression:
+ '&' UnaryExpression
+ { write_exp_elt_opcode (pstate, UNOP_ADDR); }
+| INCREMENT UnaryExpression
+ { write_exp_elt_opcode (pstate, UNOP_PREINCREMENT); }
+| DECREMENT UnaryExpression
+ { write_exp_elt_opcode (pstate, UNOP_PREDECREMENT); }
+| '*' UnaryExpression
+ { write_exp_elt_opcode (pstate, UNOP_IND); }
+| '-' UnaryExpression
+ { write_exp_elt_opcode (pstate, UNOP_NEG); }
+| '+' UnaryExpression
+ { write_exp_elt_opcode (pstate, UNOP_PLUS); }
+| '!' UnaryExpression
+ { write_exp_elt_opcode (pstate, UNOP_LOGICAL_NOT); }
+| '~' UnaryExpression
+ { write_exp_elt_opcode (pstate, UNOP_COMPLEMENT); }
+| CastExpression
+| PowExpression
+;
+
+CastExpression:
+ CAST_KEYWORD '(' TypeExp ')' UnaryExpression
+ { write_exp_elt_opcode (pstate, UNOP_CAST);
+ write_exp_elt_type (pstate, $3);
+ write_exp_elt_opcode (pstate, UNOP_CAST); }
+ /* C style cast is illegal D, but is still recognised in
+ the grammar, so we keep this around for convenience. */
+| '(' TypeExp ')' UnaryExpression
+ { write_exp_elt_opcode (pstate, UNOP_CAST);
+ write_exp_elt_type (pstate, $2);
+ write_exp_elt_opcode (pstate, UNOP_CAST); }
+;
+
+PowExpression:
+ PostfixExpression
+| PostfixExpression HATHAT UnaryExpression
+ { write_exp_elt_opcode (pstate, BINOP_EXP); }
+;
+
+PostfixExpression:
+ PrimaryExpression
+| PostfixExpression INCREMENT
+ { write_exp_elt_opcode (pstate, UNOP_POSTINCREMENT); }
+| PostfixExpression DECREMENT
+ { write_exp_elt_opcode (pstate, UNOP_POSTDECREMENT); }
+| CallExpression
+| IndexExpression
+| SliceExpression
+;
+
+ArgumentList:
+ AssignExpression
+ { arglist_len = 1; }
+| ArgumentList ',' AssignExpression
+ { arglist_len++; }
+;
+
+ArgumentList_opt:
+ /* EMPTY */
+ { arglist_len = 0; }
+| ArgumentList
+;
+
+CallExpression:
+ PostfixExpression '('
+ { start_arglist (); }
+ ArgumentList_opt ')'
+ { write_exp_elt_opcode (pstate, OP_FUNCALL);
+ write_exp_elt_longcst (pstate, (LONGEST) end_arglist ());
+ write_exp_elt_opcode (pstate, OP_FUNCALL); }
+;
+
+IndexExpression:
+ PostfixExpression '[' ArgumentList ']'
+ { if (arglist_len > 0)
+ {
+ write_exp_elt_opcode (pstate, MULTI_SUBSCRIPT);
+ write_exp_elt_longcst (pstate, (LONGEST) arglist_len);
+ write_exp_elt_opcode (pstate, MULTI_SUBSCRIPT);
+ }
+ else
+ write_exp_elt_opcode (pstate, BINOP_SUBSCRIPT);
+ }
+;
+
+SliceExpression:
+ PostfixExpression '[' ']'
+ { /* Do nothing. */ }
+| PostfixExpression '[' AssignExpression DOTDOT AssignExpression ']'
+ { write_exp_elt_opcode (pstate, TERNOP_SLICE); }
+;
+
+PrimaryExpression:
+ '(' Expression ')'
+ { /* Do nothing. */ }
+| IdentifierExp
+ { push_expression_name (pstate, $1); }
+| IdentifierExp '.' COMPLETE
+ { struct stoken s;
+ s.ptr = "";
+ s.length = 0;
+ push_expression_name (pstate, $1);
+ mark_struct_expression (pstate);
+ write_exp_elt_opcode (pstate, STRUCTOP_STRUCT);
+ write_exp_string (pstate, s);
+ write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); }
+| IdentifierExp '.' IDENTIFIER COMPLETE
+ { push_expression_name (pstate, $1);
+ mark_struct_expression (pstate);
+ write_exp_elt_opcode (pstate, STRUCTOP_STRUCT);
+ write_exp_string (pstate, $3);
+ write_exp_elt_opcode (pstate, STRUCTOP_STRUCT); }
+| DOLLAR_VARIABLE
+ { write_dollar_variable (pstate, $1); }
+| NAME_OR_INT
+ { YYSTYPE val;
+ parse_number (pstate, $1.ptr, $1.length, 0, &val);
+ write_exp_elt_opcode (pstate, OP_LONG);
+ write_exp_elt_type (pstate, val.typed_val_int.type);
+ write_exp_elt_longcst (pstate,
+ (LONGEST) val.typed_val_int.val);
+ write_exp_elt_opcode (pstate, OP_LONG); }
+| NULL_KEYWORD
+ { struct type *type = parse_d_type (pstate)->builtin_void;
+ type = lookup_pointer_type (type);
+ write_exp_elt_opcode (pstate, OP_LONG);
+ write_exp_elt_type (pstate, type);
+ write_exp_elt_longcst (pstate, (LONGEST) 0);
+ write_exp_elt_opcode (pstate, OP_LONG); }
+| TRUE_KEYWORD
+ { write_exp_elt_opcode (pstate, OP_BOOL);
+ write_exp_elt_longcst (pstate, (LONGEST) 1);
+ write_exp_elt_opcode (pstate, OP_BOOL); }
+| FALSE_KEYWORD
+ { write_exp_elt_opcode (pstate, OP_BOOL);
+ write_exp_elt_longcst (pstate, (LONGEST) 0);
+ write_exp_elt_opcode (pstate, OP_BOOL); }
+| INTEGER_LITERAL
+ { write_exp_elt_opcode (pstate, OP_LONG);
+ write_exp_elt_type (pstate, $1.type);
+ write_exp_elt_longcst (pstate, (LONGEST)($1.val));
+ write_exp_elt_opcode (pstate, OP_LONG); }
+| FLOAT_LITERAL
+ { write_exp_elt_opcode (pstate, OP_DOUBLE);
+ write_exp_elt_type (pstate, $1.type);
+ write_exp_elt_dblcst (pstate, $1.dval);
+ write_exp_elt_opcode (pstate, OP_DOUBLE); }
+| CHARACTER_LITERAL
+ { struct stoken_vector vec;
+ vec.len = 1;
+ vec.tokens = &$1;
+ write_exp_string_vector (pstate, $1.type, &vec); }
+| StringExp
+ { int i;
+ write_exp_string_vector (pstate, 0, &$1);
+ for (i = 0; i < $1.len; ++i)
+ free ($1.tokens[i].ptr);
+ free ($1.tokens); }
+| ArrayLiteral
+ { write_exp_elt_opcode (pstate, OP_ARRAY);
+ write_exp_elt_longcst (pstate, (LONGEST) 0);
+ write_exp_elt_longcst (pstate, (LONGEST) $1 - 1);
+ write_exp_elt_opcode (pstate, OP_ARRAY); }
+;
+
+ArrayLiteral:
+ '[' ArgumentList_opt ']'
+ { $$ = arglist_len; }
+;
+
+IdentifierExp:
+ IDENTIFIER
+| IdentifierExp '.' IDENTIFIER
+ { $$.length = $1.length + $3.length + 1;
+ if ($1.ptr + $1.length + 1 == $3.ptr
+ && $1.ptr[$1.length] == '.')
+ $$.ptr = $1.ptr; /* Optimization. */
+ else
+ {
+ char *buf = malloc ($$.length + 1);
+ make_cleanup (free, buf);
+ sprintf (buf, "%.*s.%.*s",
+ $1.length, $1.ptr, $3.length, $3.ptr);
+ $$.ptr = buf;
+ }
+ }
+;
+
+StringExp:
+ STRING_LITERAL
+ { /* We copy the string here, and not in the
+ lexer, to guarantee that we do not leak a
+ string. Note that we follow the
+ NUL-termination convention of the
+ lexer. */
+ struct typed_stoken *vec = XNEW (struct typed_stoken);
+ $$.len = 1;
+ $$.tokens = vec;
+
+ vec->type = $1.type;
+ vec->length = $1.length;
+ vec->ptr = malloc ($1.length + 1);
+ memcpy (vec->ptr, $1.ptr, $1.length + 1);
+ }
+| StringExp STRING_LITERAL
+ { /* Note that we NUL-terminate here, but just
+ for convenience. */
+ char *p;
+ ++$$.len;
+ $$.tokens = realloc ($$.tokens,
+ $$.len * sizeof (struct typed_stoken));
+
+ p = malloc ($2.length + 1);
+ memcpy (p, $2.ptr, $2.length + 1);
+
+ $$.tokens[$$.len - 1].type = $2.type;
+ $$.tokens[$$.len - 1].length = $2.length;
+ $$.tokens[$$.len - 1].ptr = p;
+ }
+;
+
+TypeExp:
+ BasicType
+ { write_exp_elt_opcode (pstate, OP_TYPE);
+ write_exp_elt_type (pstate, $1);
+ write_exp_elt_opcode (pstate, OP_TYPE); }
+| BasicType BasicType2
+ { $$ = follow_types ($1);
+ write_exp_elt_opcode (pstate, OP_TYPE);
+ write_exp_elt_type (pstate, $$);
+ write_exp_elt_opcode (pstate, OP_TYPE);
+ }
+;
+
+BasicType2:
+ '*'
+ { push_type (tp_pointer); }
+| '*' BasicType2
+ { push_type (tp_pointer); }
+| '[' INTEGER_LITERAL ']'
+ { push_type_int ($2.val);
+ push_type (tp_array); }
+| '[' INTEGER_LITERAL ']' BasicType2
+ { push_type_int ($2.val);
+ push_type (tp_array); }
+;
+
+BasicType:
+ TYPENAME
+ { $$ = $1.type; }
+| CLASS_KEYWORD IdentifierExp
+ { $$ = lookup_struct (copy_name ($2),
+ expression_context_block); }
+| CLASS_KEYWORD COMPLETE
+ { mark_completion_tag (TYPE_CODE_CLASS, "", 0);
+ $$ = NULL; }
+| CLASS_KEYWORD IdentifierExp COMPLETE
+ { mark_completion_tag (TYPE_CODE_CLASS, $2.ptr, $2.length);
+ $$ = NULL; }
+| STRUCT_KEYWORD IdentifierExp
+ { $$ = lookup_struct (copy_name ($2),
+ expression_context_block); }
+| STRUCT_KEYWORD COMPLETE
+ { mark_completion_tag (TYPE_CODE_STRUCT, "", 0);
+ $$ = NULL; }
+| STRUCT_KEYWORD IdentifierExp COMPLETE
+ { mark_completion_tag (TYPE_CODE_STRUCT, $2.ptr, $2.length);
+ $$ = NULL; }
+| UNION_KEYWORD IdentifierExp
+ { $$ = lookup_union (copy_name ($2),
+ expression_context_block); }
+| UNION_KEYWORD COMPLETE
+ { mark_completion_tag (TYPE_CODE_UNION, "", 0);
+ $$ = NULL; }
+| UNION_KEYWORD IdentifierExp COMPLETE
+ { mark_completion_tag (TYPE_CODE_UNION, $2.ptr, $2.length);
+ $$ = NULL; }
+| ENUM_KEYWORD IdentifierExp
+ { $$ = lookup_enum (copy_name ($2),
+ expression_context_block); }
+| ENUM_KEYWORD COMPLETE
+ { mark_completion_tag (TYPE_CODE_ENUM, "", 0);
+ $$ = NULL; }
+| ENUM_KEYWORD IdentifierExp COMPLETE
+ { mark_completion_tag (TYPE_CODE_ENUM, $2.ptr, $2.length);
+ $$ = NULL; }
+;
+
+%%
+
+/* Take care of parsing a number (anything that starts with a digit).
+ Set yylval and return the token type; update lexptr.
+ LEN is the number of characters in it. */
+
+/*** Needs some error checking for the float case ***/
+
+static int
+parse_number (struct parser_state *ps, const char *p,
+ int len, int parsed_float, YYSTYPE *putithere)
+{
+ ULONGEST n = 0;
+ ULONGEST prevn = 0;
+ ULONGEST un;
+
+ int i = 0;
+ int c;
+ int base = input_radix;
+ int unsigned_p = 0;
+ int long_p = 0;
+
+ /* We have found a "L" or "U" suffix. */
+ int found_suffix = 0;
+
+ ULONGEST high_bit;
+ struct type *signed_type;
+ struct type *unsigned_type;
+
+ if (parsed_float)
+ {
+ const struct builtin_d_type *builtin_d_types;
+ const char *suffix;
+ int suffix_len;
+ char *s, *sp;
+
+ /* Strip out all embedded '_' before passing to parse_float. */
+ s = (char *) alloca (len + 1);
+ sp = s;
+ while (len-- > 0)
+ {
+ if (*p != '_')
+ *sp++ = *p;
+ p++;
+ }
+ *sp = '\0';
+ len = strlen (s);
+
+ if (! parse_float (s, len, &putithere->typed_val_float.dval, &suffix))
+ return ERROR;
+
+ suffix_len = s + len - suffix;
+
+ if (suffix_len == 0)
+ {
+ putithere->typed_val_float.type
+ = parse_d_type (ps)->builtin_double;
+ }
+ else if (suffix_len == 1)
+ {
+ /* Check suffix for `f', `l', or `i' (float, real, or idouble). */
+ if (tolower (*suffix) == 'f')
+ {
+ putithere->typed_val_float.type
+ = parse_d_type (ps)->builtin_float;
+ }
+ else if (tolower (*suffix) == 'l')
+ {
+ putithere->typed_val_float.type
+ = parse_d_type (ps)->builtin_real;
+ }
+ else if (tolower (*suffix) == 'i')
+ {
+ putithere->typed_val_float.type
+ = parse_d_type (ps)->builtin_idouble;
+ }
+ else
+ return ERROR;
+ }
+ else if (suffix_len == 2)
+ {
+ /* Check suffix for `fi' or `li' (ifloat or ireal). */
+ if (tolower (suffix[0]) == 'f' && tolower (suffix[1] == 'i'))
+ {
+ putithere->typed_val_float.type
+ = parse_d_type (ps)->builtin_ifloat;
+ }
+ else if (tolower (suffix[0]) == 'l' && tolower (suffix[1] == 'i'))
+ {
+ putithere->typed_val_float.type
+ = parse_d_type (ps)->builtin_ireal;
+ }
+ else
+ return ERROR;
+ }
+ else
+ return ERROR;
+
+ return FLOAT_LITERAL;
+ }
+
+ /* Handle base-switching prefixes 0x, 0b, 0 */
+ if (p[0] == '0')
+ switch (p[1])
+ {
+ case 'x':
+ case 'X':
+ if (len >= 3)
+ {
+ p += 2;
+ base = 16;
+ len -= 2;
+ }
+ break;
+
+ case 'b':
+ case 'B':
+ if (len >= 3)
+ {
+ p += 2;
+ base = 2;
+ len -= 2;
+ }
+ break;
+
+ default:
+ base = 8;
+ break;
+ }
+
+ while (len-- > 0)
+ {
+ c = *p++;
+ if (c == '_')
+ continue; /* Ignore embedded '_'. */
+ if (c >= 'A' && c <= 'Z')
+ c += 'a' - 'A';
+ if (c != 'l' && c != 'u')
+ n *= base;
+ if (c >= '0' && c <= '9')
+ {
+ if (found_suffix)
+ return ERROR;
+ n += i = c - '0';
+ }
+ else
+ {
+ if (base > 10 && c >= 'a' && c <= 'f')
+ {
+ if (found_suffix)
+ return ERROR;
+ n += i = c - 'a' + 10;
+ }
+ else if (c == 'l' && long_p == 0)
+ {
+ long_p = 1;
+ found_suffix = 1;
+ }
+ else if (c == 'u' && unsigned_p == 0)
+ {
+ unsigned_p = 1;
+ found_suffix = 1;
+ }
+ else
+ return ERROR; /* Char not a digit */
+ }
+ if (i >= base)
+ return ERROR; /* Invalid digit in this base. */
+ /* Portably test for integer overflow. */
+ if (c != 'l' && c != 'u')
+ {
+ ULONGEST n2 = prevn * base;
+ if ((n2 / base != prevn) || (n2 + i < prevn))
+ error (_("Numeric constant too large."));
+ }
+ prevn = n;
+ }
+
+ /* An integer constant is an int or a long. An L suffix forces it to
+ be long, and a U suffix forces it to be unsigned. To figure out
+ whether it fits, we shift it right and see whether anything remains.
+ Note that we can't shift sizeof (LONGEST) * HOST_CHAR_BIT bits or
+ more in one operation, because many compilers will warn about such a
+ shift (which always produces a zero result). To deal with the case
+ where it is we just always shift the value more than once, with fewer
+ bits each time. */
+ un = (ULONGEST) n >> 2;
+ if (long_p == 0 && (un >> 30) == 0)
+ {
+ high_bit = ((ULONGEST) 1) << 31;
+ signed_type = parse_d_type (ps)->builtin_int;
+ /* For decimal notation, keep the sign of the worked out type. */
+ if (base == 10 && !unsigned_p)
+ unsigned_type = parse_d_type (ps)->builtin_long;
+ else
+ unsigned_type = parse_d_type (ps)->builtin_uint;
+ }
+ else
+ {
+ int shift;
+ if (sizeof (ULONGEST) * HOST_CHAR_BIT < 64)
+ /* A long long does not fit in a LONGEST. */
+ shift = (sizeof (ULONGEST) * HOST_CHAR_BIT - 1);
+ else
+ shift = 63;
+ high_bit = (ULONGEST) 1 << shift;
+ signed_type = parse_d_type (ps)->builtin_long;
+ unsigned_type = parse_d_type (ps)->builtin_ulong;
+ }
+
+ putithere->typed_val_int.val = n;
+
+ /* If the high bit of the worked out type is set then this number
+ has to be unsigned_type. */
+ if (unsigned_p || (n & high_bit))
+ putithere->typed_val_int.type = unsigned_type;
+ else
+ putithere->typed_val_int.type = signed_type;
+
+ return INTEGER_LITERAL;
+}
+
+/* Temporary obstack used for holding strings. */
+static struct obstack tempbuf;
+static int tempbuf_init;
+
+/* Parse a string or character literal from TOKPTR. The string or
+ character may be wide or unicode. *OUTPTR is set to just after the
+ end of the literal in the input string. The resulting token is
+ stored in VALUE. This returns a token value, either STRING or
+ CHAR, depending on what was parsed. *HOST_CHARS is set to the
+ number of host characters in the literal. */
+
+static int
+parse_string_or_char (const char *tokptr, const char **outptr,
+ struct typed_stoken *value, int *host_chars)
+{
+ int quote;
+
+ /* Build the gdb internal form of the input string in tempbuf. Note
+ that the buffer is null byte terminated *only* for the
+ convenience of debugging gdb itself and printing the buffer
+ contents when the buffer contains no embedded nulls. Gdb does
+ not depend upon the buffer being null byte terminated, it uses
+ the length string instead. This allows gdb to handle C strings
+ (as well as strings in other languages) with embedded null
+ bytes */
+
+ if (!tempbuf_init)
+ tempbuf_init = 1;
+ else
+ obstack_free (&tempbuf, NULL);
+ obstack_init (&tempbuf);
+
+ /* Skip the quote. */
+ quote = *tokptr;
+ ++tokptr;
+
+ *host_chars = 0;
+
+ while (*tokptr)
+ {
+ char c = *tokptr;
+ if (c == '\\')
+ {
+ ++tokptr;
+ *host_chars += c_parse_escape (&tokptr, &tempbuf);
+ }
+ else if (c == quote)
+ break;
+ else
+ {
+ obstack_1grow (&tempbuf, c);
+ ++tokptr;
+ /* FIXME: this does the wrong thing with multi-byte host
+ characters. We could use mbrlen here, but that would
+ make "set host-charset" a bit less useful. */
+ ++*host_chars;
+ }
+ }
+
+ if (*tokptr != quote)
+ {
+ if (quote == '"' || quote == '`')
+ error (_("Unterminated string in expression."));
+ else
+ error (_("Unmatched single quote."));
+ }
+ ++tokptr;
+
+ /* FIXME: should instead use own language string_type enum
+ and handle D-specific string suffixes here. */
+ if (quote == '\'')
+ value->type = C_CHAR;
+ else
+ value->type = C_STRING;
+
+ value->ptr = obstack_base (&tempbuf);
+ value->length = obstack_object_size (&tempbuf);
+
+ *outptr = tokptr;
+
+ return quote == '\'' ? CHARACTER_LITERAL : STRING_LITERAL;
+}
+
+struct token
+{
+ char *operator;
+ int token;
+ enum exp_opcode opcode;
+};
+
+static const struct token tokentab3[] =
+ {
+ {"^^=", ASSIGN_MODIFY, BINOP_EXP},
+ {"<<=", ASSIGN_MODIFY, BINOP_LSH},
+ {">>=", ASSIGN_MODIFY, BINOP_RSH},
+ };
+
+static const struct token tokentab2[] =
+ {
+ {"+=", ASSIGN_MODIFY, BINOP_ADD},
+ {"-=", ASSIGN_MODIFY, BINOP_SUB},
+ {"*=", ASSIGN_MODIFY, BINOP_MUL},
+ {"/=", ASSIGN_MODIFY, BINOP_DIV},
+ {"%=", ASSIGN_MODIFY, BINOP_REM},
+ {"|=", ASSIGN_MODIFY, BINOP_BITWISE_IOR},
+ {"&=", ASSIGN_MODIFY, BINOP_BITWISE_AND},
+ {"^=", ASSIGN_MODIFY, BINOP_BITWISE_XOR},
+ {"++", INCREMENT, BINOP_END},
+ {"--", DECREMENT, BINOP_END},
+ {"&&", ANDAND, BINOP_END},
+ {"||", OROR, BINOP_END},
+ {"^^", HATHAT, BINOP_END},
+ {"<<", LSH, BINOP_END},
+ {">>", RSH, BINOP_END},
+ {"==", EQUAL, BINOP_END},
+ {"!=", NOTEQUAL, BINOP_END},
+ {"<=", LEQ, BINOP_END},
+ {">=", GEQ, BINOP_END},
+ {"..", DOTDOT, BINOP_END},
+ };
+
+/* Identifier-like tokens. */
+static const struct token ident_tokens[] =
+ {
+ {"is", IDENTITY, BINOP_END},
+ {"!is", NOTIDENTITY, BINOP_END},
+
+ {"cast", CAST_KEYWORD, OP_NULL},
+ {"const", CONST_KEYWORD, OP_NULL},
+ {"immutable", IMMUTABLE_KEYWORD, OP_NULL},
+ {"shared", SHARED_KEYWORD, OP_NULL},
+ {"super", SUPER_KEYWORD, OP_NULL},
+
+ {"null", NULL_KEYWORD, OP_NULL},
+ {"true", TRUE_KEYWORD, OP_NULL},
+ {"false", FALSE_KEYWORD, OP_NULL},
+
+ {"init", INIT_KEYWORD, OP_NULL},
+ {"sizeof", SIZEOF_KEYWORD, OP_NULL},
+ {"typeof", TYPEOF_KEYWORD, OP_NULL},
+ {"typeid", TYPEID_KEYWORD, OP_NULL},
+
+ {"delegate", DELEGATE_KEYWORD, OP_NULL},
+ {"function", FUNCTION_KEYWORD, OP_NULL},
+ {"struct", STRUCT_KEYWORD, OP_NULL},
+ {"union", UNION_KEYWORD, OP_NULL},
+ {"class", CLASS_KEYWORD, OP_NULL},
+ {"interface", INTERFACE_KEYWORD, OP_NULL},
+ {"enum", ENUM_KEYWORD, OP_NULL},
+ {"template", TEMPLATE_KEYWORD, OP_NULL},
+ };
+
+/* If NAME is a type name in this scope, return it. */
+
+static struct type *
+d_type_from_name (struct stoken name)
+{
+ struct symbol *sym;
+ char *copy = copy_name (name);
+
+ sym = lookup_symbol (copy, expression_context_block,
+ STRUCT_DOMAIN, NULL);
+ if (sym != NULL)
+ return SYMBOL_TYPE (sym);
+
+ return NULL;
+}
+
+/* If NAME is a module name in this scope, return it. */
+
+static struct type *
+d_module_from_name (struct stoken name)
+{
+ struct symbol *sym;
+ char *copy = copy_name (name);
+
+ sym = lookup_symbol (copy, expression_context_block,
+ MODULE_DOMAIN, NULL);
+ if (sym != NULL)
+ return SYMBOL_TYPE (sym);
+
+ return NULL;
+}
+
+/* If NAME is a valid variable name in this scope, push it and return 1.
+ Otherwise, return 0. */
+
+static int
+push_variable (struct parser_state *ps, struct stoken name)
+{
+ char *copy = copy_name (name);
+ struct field_of_this_result is_a_field_of_this;
+ struct symbol *sym;
+ sym = lookup_symbol (copy, expression_context_block, VAR_DOMAIN,
+ &is_a_field_of_this);
+ if (sym && SYMBOL_CLASS (sym) != LOC_TYPEDEF)
+ {
+ if (symbol_read_needs_frame (sym))
+ {
+ if (innermost_block == 0 ||
+ contained_in (block_found, innermost_block))
+ innermost_block = block_found;
+ }
+
+ 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 (ps, NULL);
+ write_exp_elt_sym (ps, sym);
+ write_exp_elt_opcode (ps, OP_VAR_VALUE);
+ return 1;
+ }
+ if (is_a_field_of_this.type != NULL)
+ {
+ /* It hangs off of `this'. Must not inadvertently convert from a
+ method call to data ref. */
+ if (innermost_block == 0 ||
+ contained_in (block_found, innermost_block))
+ innermost_block = block_found;
+ write_exp_elt_opcode (ps, OP_THIS);
+ write_exp_elt_opcode (ps, OP_THIS);
+ write_exp_elt_opcode (ps, STRUCTOP_PTR);
+ write_exp_string (ps, name);
+ write_exp_elt_opcode (ps, STRUCTOP_PTR);
+ return 1;
+ }
+ return 0;
+}
+
+/* Assuming a reference expression has been pushed, emit the
+ STRUCTOP_PTR ops to access the field named NAME. If NAME is a
+ qualified name (has '.'), generate a field access for each part. */
+
+static void
+push_fieldnames (struct parser_state *ps, struct stoken name)
+{
+ int i;
+ struct stoken token;
+ token.ptr = name.ptr;
+ for (i = 0; ; i++)
+ {
+ if (i == name.length || name.ptr[i] == '.')
+ {
+ /* token.ptr is start of current field name. */
+ token.length = &name.ptr[i] - token.ptr;
+ write_exp_elt_opcode (ps, STRUCTOP_PTR);
+ write_exp_string (ps, token);
+ write_exp_elt_opcode (ps, STRUCTOP_PTR);
+ token.ptr += token.length + 1;
+ }
+ if (i >= name.length)
+ break;
+ }
+}
+
+/* Helper routine for push_expression_name. Handle a TYPE symbol,
+ where DOT_INDEX is the index of the first '.' if NAME is part of
+ a qualified type. */
+
+static void
+push_type_name (struct parser_state *ps, struct type *type,
+ struct stoken name, int dot_index)
+{
+ if (dot_index == name.length)
+ {
+ write_exp_elt_opcode (ps, OP_TYPE);
+ write_exp_elt_type (ps, type);
+ write_exp_elt_opcode (ps, OP_TYPE);
+ }
+ else
+ {
+ struct stoken token;
+
+ token.ptr = name.ptr;
+ token.length = dot_index;
+
+ dot_index = 0;
+
+ while (dot_index < name.length && name.ptr[dot_index] != '.')
+ dot_index++;
+ token.ptr = name.ptr;
+ token.length = dot_index;
+
+ write_exp_elt_opcode (ps, OP_SCOPE);
+ write_exp_elt_type (ps, type);
+ write_exp_string (ps, token);
+ write_exp_elt_opcode (ps, OP_SCOPE);
+
+ if (dot_index < name.length)
+ {
+ dot_index++;
+ name.ptr += dot_index;
+ name.length -= dot_index;
+ push_fieldnames (ps, name);
+ }
+ }
+}
+
+/* Helper routine for push_expression_name. Like push_type_name,
+ but used when TYPE is a module. Returns 1 on pushing the symbol. */
+
+static int
+push_module_name (struct parser_state *ps, struct type *module,
+ struct stoken name, int dot_index)
+{
+ if (dot_index == name.length)
+ {
+ write_exp_elt_opcode (ps, OP_TYPE);
+ write_exp_elt_type (ps, module);
+ write_exp_elt_opcode (ps, OP_TYPE);
+ return 1;
+ }
+ else
+ {
+ struct symbol *sym;
+ char *copy;
+
+ copy = copy_name (name);
+ sym = lookup_symbol_static (copy, expression_context_block,
+ VAR_DOMAIN);
+ if (sym != NULL)
+ sym = lookup_symbol_global (copy, expression_context_block,
+ VAR_DOMAIN);
+
+ if (sym != NULL)
+ {
+ if (SYMBOL_CLASS (sym) != LOC_TYPEDEF)
+ {
+ 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);
+ }
+ else
+ {
+ write_exp_elt_opcode (ps, OP_TYPE);
+ write_exp_elt_type (ps, SYMBOL_TYPE (sym));
+ write_exp_elt_opcode (ps, OP_TYPE);
+ }
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+/* Handle NAME in an expression (or LHS), which could be a
+ variable, type, or module. */
+
+static void
+push_expression_name (struct parser_state *ps, struct stoken name)
+{
+ struct stoken token;
+ struct type *typ;
+ struct bound_minimal_symbol msymbol;
+ char *copy;
+ int doti;
+
+ /* Handle VAR, which could be local or global. */
+ if (push_variable (ps, name) != 0)
+ return;
+
+ /* Handle MODULE. */
+ typ = d_module_from_name (name);
+ if (typ != NULL)
+ {
+ if (push_module_name (ps, typ, name, name.length) != 0)
+ return;
+ }
+
+ /* Handle TYPE. */
+ typ = d_type_from_name (name);
+ if (typ != NULL)
+ {
+ push_type_name (ps, typ, name, name.length);
+ return;
+ }
+
+ /* Handle VAR.FIELD1..FIELDN. */
+ for (doti = 0; doti < name.length; doti++)
+ {
+ if (name.ptr[doti] == '.')
+ {
+ token.ptr = name.ptr;
+ token.length = doti;
+
+ if (push_variable (ps, token) != 0)
+ {
+ token.ptr = name.ptr + doti + 1;
+ token.length = name.length - doti - 1;
+ push_fieldnames (ps, token);
+ return;
+ }
+ break;
+ }
+ }
+
+ /* Continue looking if we found a '.' in the name. */
+ if (doti < name.length)
+ {
+ token.ptr = name.ptr;
+ for (;;)
+ {
+ token.length = doti;
+
+ /* Handle PACKAGE.MODULE. */
+ typ = d_module_from_name (token);
+ if (typ != NULL)
+ {
+ if (push_module_name (ps, typ, name, doti) != 0)
+ return;
+ }
+ /* Handle TYPE.FIELD1..FIELDN. */
+ typ = d_type_from_name (token);
+ if (typ != NULL)
+ {
+ push_type_name (ps, typ, name, doti);
+ return;
+ }
+
+ if (doti >= name.length)
+ break;
+ doti++; /* Skip '.' */
+ while (doti < name.length && name.ptr[doti] != '.')
+ doti++;
+ }
+ }
+
+ /* Lookup foreign name in global static symbols. */
+ copy = copy_name (name);
+ msymbol = lookup_bound_minimal_symbol (copy);
+ if (msymbol.minsym != NULL)
+ write_exp_msymbol (ps, msymbol);
+ else if (!have_full_symbols () && !have_partial_symbols ())
+ error (_("No symbol table is loaded. Use the \"file\" command"));
+ else
+ error (_("No symbol \"%s\" in current context."), copy);
+}
+
+/* This is set if a NAME token appeared at the very end of the input
+ string, with no whitespace separating the name from the EOF. This
+ is used only when parsing to do field name completion. */
+static int saw_name_at_eof;
+
+/* 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 (void)
+{
+ int c;
+ int namelen;
+ unsigned int i;
+ const char *tokstart;
+ int saw_structop = last_was_structop;
+ char *copy;
+
+ last_was_structop = 0;
+
+ retry:
+
+ prev_lexptr = lexptr;
+
+ tokstart = lexptr;
+ /* See if it is a special token of length 3. */
+ for (i = 0; i < sizeof tokentab3 / sizeof tokentab3[0]; i++)
+ if (strncmp (tokstart, tokentab3[i].operator, 3) == 0)
+ {
+ lexptr += 3;
+ yylval.opcode = tokentab3[i].opcode;
+ return tokentab3[i].token;
+ }
+
+ /* See if it is a special token of length 2. */
+ for (i = 0; i < sizeof tokentab2 / sizeof tokentab2[0]; i++)
+ if (strncmp (tokstart, tokentab2[i].operator, 2) == 0)
+ {
+ lexptr += 2;
+ yylval.opcode = tokentab2[i].opcode;
+ return tokentab2[i].token;
+ }
+
+ switch (c = *tokstart)
+ {
+ case 0:
+ /* If we're parsing for field name completion, and the previous
+ token allows such completion, return a COMPLETE token.
+ Otherwise, we were already scanning the original text, and
+ we're really done. */
+ if (saw_name_at_eof)
+ {
+ saw_name_at_eof = 0;
+ return COMPLETE;
+ }
+ else if (saw_structop)
+ return COMPLETE;
+ else
+ return 0;
+
+ case ' ':
+ case '\t':
+ case '\n':
+ lexptr++;
+ goto retry;
+
+ case '[':
+ case '(':
+ paren_depth++;
+ lexptr++;
+ return c;
+
+ case ']':
+ case ')':
+ if (paren_depth == 0)
+ return 0;
+ paren_depth--;
+ lexptr++;
+ return c;
+
+ case ',':
+ if (comma_terminates && paren_depth == 0)
+ return 0;
+ lexptr++;
+ return c;
+
+ case '.':
+ /* Might be a floating point number. */
+ if (lexptr[1] < '0' || lexptr[1] > '9')
+ {
+ if (parse_completion)
+ last_was_structop = 1;
+ goto symbol; /* Nope, must be a symbol. */
+ }
+ /* FALL THRU into number case. */
+
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ {
+ /* It's a number. */
+ int got_dot = 0, got_e = 0, toktype;
+ const char *p = tokstart;
+ int hex = input_radix > 10;
+
+ if (c == '0' && (p[1] == 'x' || p[1] == 'X'))
+ {
+ p += 2;
+ hex = 1;
+ }
+
+ for (;; ++p)
+ {
+ /* Hex exponents start with 'p', because 'e' is a valid hex
+ digit and thus does not indicate a floating point number
+ when the radix is hex. */
+ if ((!hex && !got_e && tolower (p[0]) == 'e')
+ || (hex && !got_e && tolower (p[0] == 'p')))
+ got_dot = got_e = 1;
+ /* A '.' always indicates a decimal floating point number
+ regardless of the radix. If we have a '..' then its the
+ end of the number and the beginning of a slice. */
+ else if (!got_dot && (p[0] == '.' && p[1] != '.'))
+ got_dot = 1;
+ /* This is the sign of the exponent, not the end of the number. */
+ else if (got_e && (tolower (p[-1]) == 'e' || tolower (p[-1]) == 'p')
+ && (*p == '-' || *p == '+'))
+ continue;
+ /* We will take any letters or digits, ignoring any embedded '_'.
+ parse_number will complain if past the radix, or if L or U are
+ not final. */
+ else if ((*p < '0' || *p > '9') && (*p != '_') &&
+ ((*p < 'a' || *p > 'z') && (*p < 'A' || *p > 'Z')))
+ break;
+ }
+
+ toktype = parse_number (pstate, tokstart, p - tokstart,
+ got_dot|got_e, &yylval);
+ if (toktype == ERROR)
+ {
+ char *err_copy = (char *) alloca (p - tokstart + 1);
+
+ memcpy (err_copy, tokstart, p - tokstart);
+ err_copy[p - tokstart] = 0;
+ error (_("Invalid number \"%s\"."), err_copy);
+ }
+ lexptr = p;
+ return toktype;
+ }
+
+ case '@':
+ {
+ const char *p = &tokstart[1];
+ size_t len = strlen ("entry");
+
+ while (isspace (*p))
+ p++;
+ if (strncmp (p, "entry", len) == 0 && !isalnum (p[len])
+ && p[len] != '_')
+ {
+ lexptr = &p[len];
+ return ENTRY;
+ }
+ }
+ /* FALLTHRU */
+ case '+':
+ case '-':
+ case '*':
+ case '/':
+ case '%':
+ case '|':
+ case '&':
+ case '^':
+ case '~':
+ case '!':
+ case '<':
+ case '>':
+ case '?':
+ case ':':
+ case '=':
+ case '{':
+ case '}':
+ symbol:
+ lexptr++;
+ return c;
+
+ case '\'':
+ case '"':
+ case '`':
+ {
+ int host_len;
+ int result = parse_string_or_char (tokstart, &lexptr, &yylval.tsval,
+ &host_len);
+ if (result == CHARACTER_LITERAL)
+ {
+ if (host_len == 0)
+ error (_("Empty character constant."));
+ else if (host_len > 2 && c == '\'')
+ {
+ ++tokstart;
+ namelen = lexptr - tokstart - 1;
+ goto tryname;
+ }
+ else if (host_len > 1)
+ error (_("Invalid character constant."));
+ }
+ return result;
+ }
+ }
+
+ if (!(c == '_' || c == '$'
+ || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')))
+ /* We must have come across a bad character (e.g. ';'). */
+ error (_("Invalid character '%c' in expression"), c);
+
+ /* It's a name. See how long it is. */
+ namelen = 0;
+ for (c = tokstart[namelen];
+ (c == '_' || c == '$' || (c >= '0' && c <= '9')
+ || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));)
+ c = tokstart[++namelen];
+
+ /* The token "if" terminates the expression and is NOT
+ removed from the input stream. */
+ if (namelen == 2 && tokstart[0] == 'i' && tokstart[1] == 'f')
+ return 0;
+
+ /* For the same reason (breakpoint conditions), "thread N"
+ terminates the expression. "thread" could be an identifier, but
+ an identifier is never followed by a number without intervening
+ punctuation. "task" is similar. Handle abbreviations of these,
+ similarly to breakpoint.c:find_condition_and_thread. */
+ if (namelen >= 1
+ && (strncmp (tokstart, "thread", namelen) == 0
+ || strncmp (tokstart, "task", namelen) == 0)
+ && (tokstart[namelen] == ' ' || tokstart[namelen] == '\t'))
+ {
+ const char *p = tokstart + namelen + 1;
+
+ while (*p == ' ' || *p == '\t')
+ p++;
+ if (*p >= '0' && *p <= '9')
+ return 0;
+ }
+
+ lexptr += namelen;
+
+ tryname:
+
+ yylval.sval.ptr = tokstart;
+ yylval.sval.length = namelen;
+
+ /* Catch specific keywords. */
+ copy = copy_name (yylval.sval);
+ for (i = 0; i < sizeof ident_tokens / sizeof ident_tokens[0]; i++)
+ if (strcmp (copy, ident_tokens[i].operator) == 0)
+ {
+ /* It is ok to always set this, even though we don't always
+ strictly need to. */
+ yylval.opcode = ident_tokens[i].opcode;
+ return ident_tokens[i].token;
+ }
+
+ if (*tokstart == '$')
+ return DOLLAR_VARIABLE;
+
+ yylval.tsym.type
+ = language_lookup_primitive_type_by_name (parse_language (pstate),
+ parse_gdbarch (pstate), copy);
+ if (yylval.tsym.type != NULL)
+ return TYPENAME;
+
+ /* Input names that aren't symbols but ARE valid hex numbers,
+ when the input radix permits them, can be names or numbers
+ depending on the parse. Note we support radixes > 16 here. */
+ if ((tokstart[0] >= 'a' && tokstart[0] < 'a' + input_radix - 10)
+ || (tokstart[0] >= 'A' && tokstart[0] < 'A' + input_radix - 10))
+ {
+ YYSTYPE newlval; /* Its value is ignored. */
+ int hextype = parse_number (pstate, tokstart, namelen, 0, &newlval);
+ if (hextype == INTEGER_LITERAL)
+ return NAME_OR_INT;
+ }
+
+ if (parse_completion && *lexptr == '\0')
+ saw_name_at_eof = 1;
+
+ return IDENTIFIER;
+}
+
+int
+d_parse (struct parser_state *par_state)
+{
+ int result;
+ struct cleanup *back_to;
+
+ /* Setting up the parser state. */
+ gdb_assert (par_state != NULL);
+ pstate = par_state;
+
+ back_to = make_cleanup (null_cleanup, NULL);
+
+ make_cleanup_restore_integer (&yydebug);
+ make_cleanup_clear_parser_state (&pstate);
+ yydebug = parser_debug;
+
+ /* Initialize some state used by the lexer. */
+ last_was_structop = 0;
+ saw_name_at_eof = 0;
+
+ result = yyparse ();
+ do_cleanups (back_to);
+ return result;
+}
+
+void
+yyerror (char *msg)
+{
+ if (prev_lexptr)
+ lexptr = prev_lexptr;
+
+ error (_("A %s in expression, near `%s'."), (msg ? msg : "error"), lexptr);
+}
+
projects / deliverable / binutils-gdb.git / commitdiff
