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270 lines
6.9 KiB
C
270 lines
6.9 KiB
C
/**\file parse_constants.h
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Constants used in the programmatic representation of fish code.
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*/
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#ifndef fish_parse_constants_h
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#define fish_parse_constants_h
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#define PARSE_ASSERT(a) assert(a)
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#define PARSER_DIE() do { fprintf(stderr, "Parser dying!\n"); exit_without_destructors(-1); } while (0)
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enum parse_token_type_t
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{
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token_type_invalid,
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// Non-terminal tokens
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symbol_job_list,
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symbol_job,
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symbol_job_continuation,
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symbol_statement,
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symbol_block_statement,
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symbol_block_header,
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symbol_for_header,
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symbol_while_header,
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symbol_begin_header,
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symbol_function_header,
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symbol_if_statement,
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symbol_if_clause,
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symbol_else_clause,
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symbol_else_continuation,
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symbol_switch_statement,
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symbol_case_item_list,
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symbol_case_item,
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symbol_boolean_statement,
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symbol_decorated_statement,
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symbol_plain_statement,
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symbol_arguments_or_redirections_list,
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symbol_argument_or_redirection,
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symbol_argument_list,
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symbol_argument,
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symbol_redirection,
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symbol_optional_background,
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symbol_end_command,
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// Terminal types
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parse_token_type_string,
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parse_token_type_pipe,
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parse_token_type_redirection,
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parse_token_type_background,
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parse_token_type_end,
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// Special terminal type that means no more tokens forthcoming
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parse_token_type_terminate,
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// Very special terminal types that don't appear in the production list
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parse_special_type_parse_error,
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parse_special_type_tokenizer_error,
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parse_special_type_comment,
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FIRST_TERMINAL_TYPE = parse_token_type_string,
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LAST_TERMINAL_TYPE = parse_token_type_terminate,
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LAST_TOKEN_OR_SYMBOL = parse_token_type_terminate,
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FIRST_PARSE_TOKEN_TYPE = parse_token_type_string
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};
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enum parse_keyword_t
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{
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parse_keyword_none,
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parse_keyword_if,
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parse_keyword_else,
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parse_keyword_for,
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parse_keyword_in,
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parse_keyword_while,
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parse_keyword_begin,
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parse_keyword_function,
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parse_keyword_switch,
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parse_keyword_case,
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parse_keyword_end,
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parse_keyword_and,
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parse_keyword_or,
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parse_keyword_not,
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parse_keyword_command,
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parse_keyword_builtin,
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parse_keyword_exec,
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LAST_KEYWORD = parse_keyword_builtin
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};
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/* Statement decorations. This matches the order of productions in decorated_statement */
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enum parse_statement_decoration_t
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{
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parse_statement_decoration_none,
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parse_statement_decoration_command,
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parse_statement_decoration_builtin,
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parse_statement_decoration_exec
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};
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/* Parse error code list */
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enum parse_error_code_t
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{
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parse_error_none,
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/* Matching values from enum parser_error */
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parse_error_syntax,
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parse_error_eval,
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parse_error_cmdsubst,
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parse_error_generic, // unclassified error types
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//tokenizer errors
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parse_error_tokenizer_unterminated_quote,
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parse_error_tokenizer_unterminated_subshell,
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parse_error_tokenizer_unterminated_escape,
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parse_error_tokenizer_other,
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parse_error_unbalancing_end, //end outside of block
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parse_error_unbalancing_else, //else outside of if
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parse_error_unbalancing_case, //case outside of switch
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parse_error_double_pipe, // foo || bar, has special error message
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parse_error_double_background // foo && bar, has special error message
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};
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enum
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{
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PARSER_TEST_ERROR = 1,
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PARSER_TEST_INCOMPLETE = 2
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};
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typedef unsigned int parser_test_error_bits_t;
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/** Maximum number of function calls. */
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#define FISH_MAX_STACK_DEPTH 128
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/** Error message on a function that calls itself immediately */
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#define INFINITE_FUNC_RECURSION_ERR_MSG _( L"The function '%ls' calls itself immediately, which would result in an infinite loop.")
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/** Error message on reaching maximum call stack depth */
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#define CALL_STACK_LIMIT_EXCEEDED_ERR_MSG _( L"The function call stack limit has been exceeded. Do you have an accidental infinite loop?")
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/** Error message when a non-string token is found when expecting a command name */
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#define CMD_OR_ERR_MSG _( L"Expected a command, but instead found a pipe. Did you mean 'COMMAND; or COMMAND'? See the help section for the 'or' builtin command by typing 'help or'.")
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/** Error message when a non-string token is found when expecting a command name */
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#define CMD_AND_ERR_MSG _( L"Expected a command, but instead found a '&'. Did you mean 'COMMAND; and COMMAND'? See the help section for the 'and' builtin command by typing 'help and'.")
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/** Error message when encountering an illegal command name */
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#define ILLEGAL_CMD_ERR_MSG _( L"Illegal command name '%ls'")
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/** Error message when encountering a failed expansion, e.g. for the variable name in for loops */
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#define FAILED_EXPANSION_VARIABLE_NAME_ERR_MSG _( L"Unable to expand variable name '%ls'")
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/** Error message when encountering an illegal file descriptor */
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#define ILLEGAL_FD_ERR_MSG _( L"Illegal file descriptor in redirection '%ls'")
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/** Error message for wildcards with no matches */
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#define WILDCARD_ERR_MSG _( L"No matches for wildcard '%ls'.")
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/** Error when using break outside of loop */
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#define INVALID_BREAK_ERR_MSG _( L"break command while not inside of loop" )
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/** Error when using continue outside of loop */
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#define INVALID_CONTINUE_ERR_MSG _( L"continue command while not inside of loop" )
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/** Error when using return builtin outside of function definition */
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#define INVALID_RETURN_ERR_MSG _( L"'return' builtin command outside of function definition" )
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/** Error message for Posix-style assignment: foo=bar */
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#define COMMAND_ASSIGN_ERR_MSG _( L"Unknown command '%ls'. Did you mean 'set %ls %ls'? See the help section on the set command by typing 'help set'.")
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/**
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While block description
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*/
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#define WHILE_BLOCK N_( L"'while' block" )
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/**
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For block description
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*/
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#define FOR_BLOCK N_( L"'for' block" )
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/**
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Breakpoint block
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*/
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#define BREAKPOINT_BLOCK N_( L"Block created by breakpoint" )
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/**
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If block description
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*/
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#define IF_BLOCK N_( L"'if' conditional block" )
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/**
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Function definition block description
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*/
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#define FUNCTION_DEF_BLOCK N_( L"function definition block" )
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/**
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Function invocation block description
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*/
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#define FUNCTION_CALL_BLOCK N_( L"function invocation block" )
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/**
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Function invocation block description
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*/
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#define FUNCTION_CALL_NO_SHADOW_BLOCK N_( L"function invocation block with no variable shadowing" )
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/**
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Switch block description
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*/
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#define SWITCH_BLOCK N_( L"'switch' block" )
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/**
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Fake block description
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*/
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#define FAKE_BLOCK N_( L"unexecutable block" )
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/**
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Top block description
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*/
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#define TOP_BLOCK N_( L"global root block" )
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/**
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Command substitution block description
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*/
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#define SUBST_BLOCK N_( L"command substitution block" )
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/**
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Begin block description
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*/
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#define BEGIN_BLOCK N_( L"'begin' unconditional block" )
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/**
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Source block description
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*/
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#define SOURCE_BLOCK N_( L"Block created by the . builtin" )
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/**
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Source block description
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*/
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#define EVENT_BLOCK N_( L"event handler block" )
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/**
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Unknown block description
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*/
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#define UNKNOWN_BLOCK N_( L"unknown/invalid block" )
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#endif
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