Migrate source files into src/ directory

This change moves source files into a src/ directory,
and puts object files into an obj/ directory. The Makefile
and xcode project are updated accordingly.

Fixes #1866

1 files changed, 352 insertions, 0 deletions

diff --git a/src/parse_constants.h b/src/parse_constants.h
new file mode 100644
index 00000000..552085f8
--- /dev/null
+++ b/src/parse_constants.h
@@ -0,0 +1,352 @@
+/**\file parse_constants.h
+
+    Constants used in the programmatic representation of fish code.
+*/
+
+#ifndef fish_parse_constants_h
+#define fish_parse_constants_h
+
+#include "config.h"
+
+#define PARSE_ASSERT(a) assert(a)
+#define PARSER_DIE() do { fprintf(stderr, "Parser dying!\n"); exit_without_destructors(-1); } while (0)
+
+enum parse_token_type_t
+{
+    token_type_invalid,
+
+    // Non-terminal tokens
+    symbol_job_list,
+    symbol_job,
+    symbol_job_continuation,
+    symbol_statement,
+    symbol_block_statement,
+    symbol_block_header,
+    symbol_for_header,
+    symbol_while_header,
+    symbol_begin_header,
+    symbol_function_header,
+
+    symbol_if_statement,
+    symbol_if_clause,
+    symbol_else_clause,
+    symbol_else_continuation,
+
+    symbol_switch_statement,
+    symbol_case_item_list,
+    symbol_case_item,
+
+    symbol_boolean_statement,
+    symbol_decorated_statement,
+    symbol_plain_statement,
+    symbol_arguments_or_redirections_list,
+    symbol_argument_or_redirection,
+
+    symbol_argument_list,
+
+    // "freestanding" argument lists are parsed from the argument list supplied to 'complete -a'
+    // They are not generated by parse trees rooted in symbol_job_list
+    symbol_freestanding_argument_list,
+
+    symbol_argument,
+    symbol_redirection,
+
+    symbol_optional_background,
+
+    symbol_end_command,
+
+    // Terminal types
+    parse_token_type_string,
+    parse_token_type_pipe,
+    parse_token_type_redirection,
+    parse_token_type_background,
+    parse_token_type_end,
+
+    // Special terminal type that means no more tokens forthcoming
+    parse_token_type_terminate,
+
+    // Very special terminal types that don't appear in the production list
+    parse_special_type_parse_error,
+    parse_special_type_tokenizer_error,
+    parse_special_type_comment,
+
+    FIRST_TERMINAL_TYPE = parse_token_type_string,
+    LAST_TERMINAL_TYPE = parse_token_type_terminate,
+
+    LAST_TOKEN_OR_SYMBOL = parse_token_type_terminate,
+
+    FIRST_PARSE_TOKEN_TYPE = parse_token_type_string,
+    LAST_PARSE_TOKEN_TYPE = parse_token_type_end
+} __packed;
+
+/* These must be maintained in sorted order (except for none, which isn't a keyword). This enables us to do binary search. */
+enum parse_keyword_t
+{
+    parse_keyword_none,
+    parse_keyword_and,
+    parse_keyword_begin,
+    parse_keyword_builtin,
+    parse_keyword_case,
+    parse_keyword_command,
+    parse_keyword_else,
+    parse_keyword_end,
+    parse_keyword_exec,
+    parse_keyword_for,
+    parse_keyword_function,
+    parse_keyword_if,
+    parse_keyword_in,
+    parse_keyword_not,
+    parse_keyword_or,
+    parse_keyword_switch,
+    parse_keyword_while,
+    LAST_KEYWORD = parse_keyword_while
+} __packed;
+
+/* Statement decorations. This matches the order of productions in decorated_statement */
+enum parse_statement_decoration_t
+{
+    parse_statement_decoration_none,
+    parse_statement_decoration_command,
+    parse_statement_decoration_builtin,
+    parse_statement_decoration_exec
+};
+
+/* Boolean statement types */
+enum parse_bool_statement_type_t
+{
+    parse_bool_and,
+    parse_bool_or,
+    parse_bool_not
+};
+
+/* Parse error code list */
+enum parse_error_code_t
+{
+    parse_error_none,
+
+    /* Matching values from enum parser_error */
+    parse_error_syntax,
+    parse_error_eval,
+    parse_error_cmdsubst,
+
+    parse_error_generic, // unclassified error types
+
+    //tokenizer errors
+    parse_error_tokenizer_unterminated_quote,
+    parse_error_tokenizer_unterminated_subshell,
+    parse_error_tokenizer_unterminated_escape,
+    parse_error_tokenizer_other,
+
+    parse_error_unbalancing_end, //end outside of block
+    parse_error_unbalancing_else, //else outside of if
+    parse_error_unbalancing_case, //case outside of switch
+
+    parse_error_double_pipe, // foo || bar, has special error message
+    parse_error_double_background // foo && bar, has special error message
+};
+
+enum
+{
+    PARSER_TEST_ERROR = 1,
+    PARSER_TEST_INCOMPLETE = 2
+};
+typedef unsigned int parser_test_error_bits_t;
+
+struct parse_error_t
+{
+    /** Text of the error */
+    wcstring text;
+
+    /** Code for the error */
+    enum parse_error_code_t code;
+
+    /** Offset and length of the token in the source code that triggered this error */
+    size_t source_start;
+    size_t source_length;
+
+    /** Return a string describing the error, suitable for presentation to the user. If skip_caret is false, the offending line with a caret is printed as well */
+    wcstring describe(const wcstring &src) const;
+
+    /** Return a string describing the error, suitable for presentation to the user, with the given prefix. If skip_caret is false, the offending line with a caret is printed as well */
+    wcstring describe_with_prefix(const wcstring &src, const wcstring &prefix, bool is_interactive, bool skip_caret) const;
+};
+typedef std::vector<parse_error_t> parse_error_list_t;
+
+/* Special source_start value that means unknown */
+#define SOURCE_LOCATION_UNKNOWN (static_cast<size_t>(-1))
+
+/* Helper function to offset error positions by the given amount. This is used when determining errors in a substring of a larger source buffer. */
+void parse_error_offset_source_start(parse_error_list_t *errors, size_t amt);
+
+/** Maximum number of function calls. */
+#define FISH_MAX_STACK_DEPTH 128
+
+/** Error message on a function that calls itself immediately */
+#define INFINITE_FUNC_RECURSION_ERR_MSG _( L"The function '%ls' calls itself immediately, which would result in an infinite loop.")
+
+/** Error message on reaching maximum call stack depth */
+#define CALL_STACK_LIMIT_EXCEEDED_ERR_MSG _( L"The function call stack limit has been exceeded. Do you have an accidental infinite loop?")
+
+/** Error message when encountering an illegal command name */
+#define ILLEGAL_CMD_ERR_MSG _( L"Illegal command name '%ls'")
+
+/** Error message when encountering an unknown builtin name */
+#define UNKNOWN_BUILTIN_ERR_MSG _( L"Unknown builtin '%ls'")
+
+/** Error message when encountering a failed expansion, e.g. for the variable name in for loops */
+#define FAILED_EXPANSION_VARIABLE_NAME_ERR_MSG _( L"Unable to expand variable name '%ls'")
+
+/** Error message when encountering a failed process expansion, e.g. %notaprocess */
+#define FAILED_EXPANSION_PROCESS_ERR_MSG _( L"Unable to find a process '%ls'")
+
+/** Error message when encountering an illegal file descriptor */
+#define ILLEGAL_FD_ERR_MSG _( L"Illegal file descriptor in redirection '%ls'")
+
+/** Error message for wildcards with no matches */
+#define WILDCARD_ERR_MSG _( L"No matches for wildcard '%ls'.")
+
+/** Error when using break outside of loop */
+#define INVALID_BREAK_ERR_MSG _( L"'break' while not inside of loop" )
+
+/** Error when using continue outside of loop */
+#define INVALID_CONTINUE_ERR_MSG _( L"'continue' while not inside of loop" )
+
+/** Error when using return builtin outside of function definition */
+#define INVALID_RETURN_ERR_MSG _( L"'return' outside of function definition" )
+
+
+/*** Error messages. The number is a reminder of how many format specifiers are contained. */
+
+/** Error for (e.g.) $^ */
+#define ERROR_BAD_VAR_CHAR1 _( L"$%lc is not a valid variable in fish." )
+
+/** Error for ${a} */
+#define ERROR_BRACKETED_VARIABLE1 _( L"Variables cannot be bracketed. In fish, please use {$%ls}." )
+
+/** Error for "${a}" */
+#define ERROR_BRACKETED_VARIABLE_QUOTED1 _( L"Variables cannot be bracketed. In fish, please use \"$%ls\"." )
+
+/** Error issued on $? */
+#define ERROR_NOT_STATUS _( L"$? is not the exit status. In fish, please use $status.")
+
+/** Error issued on $$ */
+#define ERROR_NOT_PID _( L"$$ is not the pid. In fish, please use %%self.")
+
+/** Error issued on $# */
+#define ERROR_NOT_ARGV_COUNT _( L"$# is not supported. In fish, please use 'count $argv'.")
+
+/** Error issued on $@ */
+#define ERROR_NOT_ARGV_AT _( L"$@ is not supported. In fish, please use $argv.")
+
+/** Error issued on $(...) */
+#define ERROR_BAD_VAR_SUBCOMMAND1 _( L"$(...) is not supported. In fish, please use '(%ls)'." )
+
+/** Error issued on $* */
+#define ERROR_NOT_ARGV_STAR _( L"$* is not supported. In fish, please use $argv." )
+
+/** Error issued on $ */
+#define ERROR_NO_VAR_NAME _( L"Expected a variable name after this $.")
+
+/** Error on || */
+#define ERROR_BAD_OR _( L"Unsupported use of '||'. In fish, please use 'COMMAND; or COMMAND'.")
+
+/** Error on && */
+#define ERROR_BAD_AND _( L"Unsupported use of '&&'. In fish, please use 'COMMAND; and COMMAND'.")
+
+/** Error on foo=bar */
+#define ERROR_BAD_EQUALS_IN_COMMAND5 _( L"Unsupported use of '='. To run '%ls' with a modified environment, please use 'env %ls=%ls %ls%ls'")
+
+/** Error message for Posix-style assignment: foo=bar */
+#define ERROR_BAD_COMMAND_ASSIGN_ERR_MSG _( L"Unsupported use of '='. In fish, please use 'set %ls %ls'.")
+
+
+
+/**
+   While block description
+*/
+#define WHILE_BLOCK N_( L"'while' block" )
+
+/**
+   For block description
+*/
+#define FOR_BLOCK N_( L"'for' block" )
+
+/**
+   Breakpoint block
+*/
+#define BREAKPOINT_BLOCK N_( L"Block created by breakpoint" )
+
+
+
+/**
+   If block description
+*/
+#define IF_BLOCK N_( L"'if' conditional block" )
+
+
+/**
+   Function definition block description
+*/
+#define FUNCTION_DEF_BLOCK N_( L"function definition block" )
+
+
+/**
+   Function invocation block description
+*/
+#define FUNCTION_CALL_BLOCK N_( L"function invocation block" )
+
+/**
+   Function invocation block description
+*/
+#define FUNCTION_CALL_NO_SHADOW_BLOCK N_( L"function invocation block with no variable shadowing" )
+
+
+/**
+   Switch block description
+*/
+#define SWITCH_BLOCK N_( L"'switch' block" )
+
+
+/**
+   Fake block description
+*/
+#define FAKE_BLOCK N_( L"unexecutable block" )
+
+
+/**
+   Top block description
+*/
+#define TOP_BLOCK N_( L"global root block" )
+
+
+/**
+   Command substitution block description
+*/
+#define SUBST_BLOCK N_( L"command substitution block" )
+
+
+/**
+   Begin block description
+*/
+#define BEGIN_BLOCK N_( L"'begin' unconditional block" )
+
+
+/**
+   Source block description
+*/
+#define SOURCE_BLOCK N_( L"Block created by the . builtin" )
+
+/**
+   Source block description
+*/
+#define EVENT_BLOCK N_( L"event handler block" )
+
+
+/**
+   Unknown block description
+*/
+#define UNKNOWN_BLOCK N_( L"unknown/invalid block" )
+
+
+
+#endif