Make cp-name-parser.y a pure parser
This changes cp-name-parser.y to be a pure parser. Originally I had thought that doing this would mean that gdb would always require Bison. However, I've learned that Byacc supports some of the Bison extensions in this area. So, the new code ought to work reasonably well with both. Note that the Byacc documentations says: %pure-parser Most variables (other than yydebug and yynerrs) are allocated on the stack within yyparse, making the parser reasonably reentrant. In our case this is ok, first because gdb does not yet actualy require reentrancy, and second because gdb does not use yynerrs. gdb/ChangeLog 2018-06-01 Tom Tromey <tom@tromey.com> * cp-name-parser.y: Use %pure-parser, %lex-param, and %parse-param. (lexptr, prev_lexptr, error_lexptr, global_errmsg, demangle_info) (global_result): Remove globals. (struct cpname_state): New. (yyparse): Don't declare. (yylex, yyerror): Move declarations after %union. (d_grab, fill_comp, make_operator, make_dtor, make_builtin_type) (make_name): Add state parameter. Update all callers. (d_qualify, d_int_type, d_unary, d_binary, parse_number) Add state parameter. (HANDLE_QUAL, HANDLE_SPECIAL, HANDLE_TOKEN2, HANDLE_TOKEN3): Update. (yylex): Add lvalp, state parameters. (yyerror): Add state parameter. (cp_demangled_name_to_comp): Update.
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2018-06-01 Tom Tromey <tom@tromey.com>
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* cp-name-parser.y: Use %pure-parser, %lex-param, and
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%parse-param.
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(lexptr, prev_lexptr, error_lexptr, global_errmsg, demangle_info)
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(global_result): Remove globals.
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(struct cpname_state): New.
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(yyparse): Don't declare.
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(yylex, yyerror): Move declarations after %union.
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(d_grab, fill_comp, make_operator, make_dtor, make_builtin_type)
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(make_name): Add state parameter.
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Update all callers.
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(d_qualify, d_int_type, d_unary, d_binary, parse_number) Add state
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parameter.
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(HANDLE_QUAL, HANDLE_SPECIAL, HANDLE_TOKEN2, HANDLE_TOKEN3):
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Update.
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(yylex): Add lvalp, state parameters.
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(yyerror): Add state parameter.
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(cp_demangled_name_to_comp): Update.
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2018-06-01 Tom Tromey <tom@tromey.com>
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* cp-name-parser.y (parser_fprintf): Declare.
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