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+/*
+ * $Date: 2007/12/10 21:59:20 $
+ * $Source: /cvsroot/videoteco/videoteco/tecparse.h,v $
+ * $Revision: 1.1 $
+ * $Locker: $
+ */
+
+/* tecparse.h
+ * Definitions for TECO parser
+ * %W% (PC) %G%
+ *
+ * COPYRIGHT (c) 1985-2003 BY
+ * PAUL CANTRELL & J. M. NISHINAGA
+ * SUDBURY, MA 01776
+ * ALL RIGHTS RESERVED
+ *
+ * This software is furnished in it's current state free of charge.
+ * The authors reserve all rights to the software. Further
+ * distribution of the software is not authorized. Modifications to
+ * the software may be made locally, but shall not be distributed
+ * without the consent of the authors. This software or any other
+ * copies thereof, may not be provided or otherwise made available
+ * to anyone without express permission of the authors. Title to and
+ * ownership of this software remains with the authors.
+ *
+ */
+
+/*
+ * This structure holds the context which must be passed forward as the
+ * parse progresses. We split it out of the cmd_token structure so that
+ * it can be easily duplicated.
+ */
+struct cmd_context {
+ char state;
+ char flags;
+ char go_flag;
+ char pnest;
+ char inest;
+ char cnest;
+ char iarg1_flag;
+ char iarg2_flag;
+ char delimeter;
+ int iarg1;
+ int iarg2;
+ char *carg;
+ int tmpval;
+ int return_state;
+ struct cmd_token *caller_token;
+};
+
+/*
+ * Define the structure which we use to describe commands
+ */
+struct cmd_token {
+ char opcode;
+ char input_byte;
+ char q_register;
+ char flags;
+ int execute_state;
+ struct cmd_token *next_token;
+ struct cmd_token *prev_token;
+ struct undo_token *undo_list;
+ struct cmd_context ctx;
+};
+
+struct undo_token {
+ char opcode;
+ int iarg1;
+ int iarg2;
+ char *carg1;
+ struct undo_token *next_token;
+};
+
+#define TRACE_C_PARSE 1
+#define TRACE_C_EXEC 2
+#define TRACE_C_MACRO 3
+
+#define TOK_M_EAT_TOKEN (1 << 0)
+#define TOK_M_WORDBOUNDARY (1 << 1)
+#define TOK_M_PARSELOAD_IARG1 (1 << 2)
+#define TOK_M_PARSELOAD_IARG2 (1 << 3)
+#define TOK_M_PARSELOAD_TMPVAL (1 << 4)
+
+#define CTOK_M_COLON_SEEN (1 << 0)
+#define CTOK_M_ATSIGN_SEEN (1 << 1)
+#define CTOK_M_STATUS_PASSED (1 << 2)
+
+#define TOK_C_UNUSED 0 /* Value before it gets set */
+#define TOK_C_FIRSTTOKEN 1 /* The begining of it all */
+#define TOK_C_INPUTCHAR 2 /* An input character was recieved here */
+#define TOK_C_COPYTOKEN 3 /* A copy of a previous command token */
+#define TOK_C_ITERATION_BEGIN 4 /* Marks the begining of an iteration */
+#define TOK_C_ITERATION_END 5 /* Marks the end of an iteration */
+#define TOK_C_CONDITIONAL_END 6 /* Marks end of a conditional cmd */
+#define TOK_C_LABEL_BEGIN 7 /* Begining of a label tag !like this! */
+#define TOK_C_LABEL_END 8 /* End of a label tag */
+#define TOK_C_GOTO_BEGIN 9 /* Begining of an Omumble$ string */
+#define TOK_C_GOTO_END 10 /* End of an Omumble$ string */
+#define TOK_C_FINALTOKEN 11 /* Like FINALSTATE */
+#define TOK_C_INITIALSTATE 12 /* Used by ^W to find begining of cmds */
+#define TOK_C_CONDITIONAL_ELSE 13/* Marks begining of an ELSE clause */
+
+#define STATE_C_INITIALSTATE 0
+#define STATE_C_MAINCOMMANDS 1
+#define STATE_C_ESCAPESEEN 2
+#define STATE_C_ECOMMAND 3
+#define STATE_C_ARG1 4
+#define STATE_C_ARG2 5
+#define STATE_C_EXPRESSION 6
+#define STATE_C_OPERATOR 7
+#define STATE_C_PLUS 8
+#define STATE_C_MINUS 9
+#define STATE_C_TIMES 10
+#define STATE_C_DIVIDE 11
+#define STATE_C_MINUSSEEN 14
+#define STATE_C_SUBEXPRESSION 15
+#define STATE_C_OPERAND 16
+#define STATE_C_NUMBER_SUBSTATE 17
+#define STATE_C_QOPERAND 18
+#define STATE_C_INSERT 19
+#define STATE_C_QUOTED_INSERT 20
+#define STATE_C_UMINUS 21
+#define STATE_C_LABEL 22
+#define STATE_C_UQREGISTER 23
+#define STATE_C_WRITEFILE 24
+#define STATE_C_STRING 25
+#define STATE_C_STRING1 26
+#define STATE_C_SEARCH 27
+#define STATE_C_FCOMMAND 28
+#define STATE_C_FSPART1 29
+#define STATE_C_FSPART2 30
+#define STATE_C_EDITBUF 31
+#define STATE_C_READFILE 32
+#define STATE_C_XQREGISTER 33
+#define STATE_C_GQREGISTER 34
+#define STATE_C_MQREGISTER 35
+#define STATE_C_VIEWBUF 36
+#define STATE_C_FDCOMMAND 37
+#define STATE_C_CONDITIONALS 38
+#define STATE_C_GOTO 39
+#define STATE_C_FRPART1 40
+#define STATE_C_FRPART2 41
+#define STATE_C_MESSAGE 42
+#define STATE_C_FKCOMMAND 43
+#define STATE_C_ECCOMMAND 44
+#define STATE_C_SAVECOMMAND 45
+#define STATE_C_PERCENT_OPERAND 46
+#define STATE_C_ATINSERT 47
+#define STATE_C_ATINSERT_PART2 48
+#define STATE_C_ONE_EQUALS 49
+#define STATE_C_TWO_EQUALS 50
+#define STATE_C_SKIP_ELSE 51
+#define STATE_C_PUSH_QREGISTER 52
+#define STATE_C_POP_QREGISTER 53
+#define STATE_C_NSEARCH 54
+#define STATE_C_ACCEPT_ARGS 55
+#define STATE_C_EQQREGISTER1 56
+#define STATE_C_EQQREGISTER2 57
+#define STATE_C_RADIX 58
+#define STATE_C_HEX_NUMBER 59
+#define STATE_C_OCTAL_NUMBER 60
+#define STATE_C_HEX_NUMBER_SUBSTATE 61
+#define STATE_C_OCTAL_NUMBER_SUBSTATE 62
+#define STATE_C_BACKSLASH 63
+#define STATE_C_DELAYED_MINUS 64
+#define STATE_C_DELAYED_PLUS 65
+#define STATE_C_FSPART3 66
+#define STATE_C_FTAGS 67
+
+
+#define STATE_C_RETURN 97
+#define STATE_C_FINALSTATE 98
+#define STATE_C_ERRORSTATE 99
+
+/*
+ * Here we define the execution time states
+ */
+#define EXEC_C_NULLSTATE 0
+#define EXEC_C_DOTARG1 1
+#define EXEC_C_ZEEARG1 2
+#define EXEC_C_HARGUMENT 3
+#define EXEC_C_EXITCOMMAND 4
+#define EXEC_C_UQREGISTER 5
+#define EXEC_C_JUMP 8
+#define EXEC_C_INSERT 9
+#define EXEC_C_LINE 10
+#define EXEC_C_CHAR 11
+#define EXEC_C_RCHAR 12
+#define EXEC_C_DELETE 13
+#define EXEC_C_HVALUE 14
+#define EXEC_C_DOTVALUE 15
+#define EXEC_C_ZEEVALUE 16
+#define EXEC_C_QVALUE 17
+#define EXEC_C_EQUALS 18
+#define EXEC_C_REDRAW_SCREEN 19
+#define EXEC_C_STOREVAL 20
+#define EXEC_C_STORE1 21
+#define EXEC_C_STORE2 22
+#define EXEC_C_UMINUS 23
+#define EXEC_C_PLUS 24
+#define EXEC_C_MINUS 25
+#define EXEC_C_TIMES 26
+#define EXEC_C_DIVIDE 27
+#define EXEC_C_KILL 28
+#define EXEC_C_WRITEFILE 29
+#define EXEC_C_SEARCH 30
+#define EXEC_C_SETSEARCH 31
+#define EXEC_C_FSREPLACE1 32
+#define EXEC_C_ITERATION_BEGIN 33
+#define EXEC_C_ITERATION_END 34
+#define EXEC_C_READFILE 35
+#define EXEC_C_EDITBUF 36
+#define EXEC_C_XQREGISTER 37
+#define EXEC_C_GQREGISTER 38
+#define EXEC_C_SEMICOLON 39
+#define EXEC_C_MQREGISTER 40
+#define EXEC_C_CLOSEBUF 41
+#define EXEC_C_VIEWBUF 42
+#define EXEC_C_FDCOMMAND 43
+#define EXEC_C_ACOMMAND 44
+#define EXEC_C_BACKSLASH 45
+#define EXEC_C_BACKSLASHARG 46
+#define EXEC_C_COND_GT 47
+#define EXEC_C_COND_LT 48
+#define EXEC_C_COND_EQ 49
+#define EXEC_C_COND_NE 50
+#define EXEC_C_COND_DIGIT 51
+#define EXEC_C_COND_ALPHA 52
+#define EXEC_C_COND_LOWER 53
+#define EXEC_C_COND_UPPER 54
+#define EXEC_C_COND_SYMBOL 55
+#define EXEC_C_GOTO 56
+#define EXEC_C_FRREPLACE 57
+#define EXEC_C_MESSAGE 58
+#define EXEC_C_RESET_MESSAGE 59
+#define EXEC_C_OUTPUT_MESSAGE 60
+#define EXEC_C_FKCOMMAND 61
+#define EXEC_C_REMEMBER_DOT 62
+#define EXEC_C_ECCOMMAND 63
+#define EXEC_C_SAVECOMMAND 64
+#define EXEC_C_SCROLL 65
+#define EXEC_C_UPDATE_SCREEN 66
+#define EXEC_C_SET_IMMEDIATE_MODE 67
+#define EXEC_C_PERCENT_VALUE 68
+#define EXEC_C_WORD 69
+#define EXEC_C_TWO_EQUALS 70
+#define EXEC_C_THREE_EQUALS 71
+#define EXEC_C_SKIP_ELSE 72
+#define EXEC_C_PUSH_QREGISTER 73
+#define EXEC_C_POP_QREGISTER 74
+#define EXEC_C_NSEARCH 75
+#define EXEC_C_EQQREGISTER 76
+#define EXEC_C_WINDOW_CONTROL 77
+#define EXEC_C_NEXT_WINDOW 78
+#define EXEC_C_RLINE 79
+#define EXEC_C_DELWORD 80
+#define EXEC_C_RDELWORD 81
+#define EXEC_C_OPENBRACE 82
+#define EXEC_C_CLOSEBRACE 83
+#define EXEC_C_SKIPLABEL 84
+#define EXEC_C_SETOPTIONS 85
+#define EXEC_C_FSREPLACE2 86
+#define EXEC_C_FSREPLACE3 87
+#define EXEC_C_FTAGS 88
+
+/*
+ * Define the UNDO symbols
+ */
+#define UNDO_C_UNUSED 0
+#define UNDO_C_CHANGEDOT 1
+#define UNDO_C_DELETE 2
+#define UNDO_C_INSERT 3
+#define UNDO_C_UQREGISTER 4
+#define UNDO_C_MEMFREE 5
+#define UNDO_C_SHORTEN_STRING 6
+#define UNDO_C_SET_SEARCH_STRING 7
+#define UNDO_C_CHANGEBUFF 8
+#define UNDO_C_MACRO 9
+#define UNDO_C_SHORTEN_MESSAGE 10
+#define UNDO_C_BULK_INSERT 11
+#define UNDO_C_SET_IMMEDIATE_MODE 12
+#define UNDO_C_PUSH 13
+#define UNDO_C_POP 14
+#define UNDO_C_MODIFIED 15
+#define UNDO_C_CLOSEBUFF 16
+#define UNDO_C_WINDOW_SWITCH 17
+#define UNDO_C_WINDOW_SPLIT 18
+#define UNDO_C_REOPENBUFF 19
+#define UNDO_C_RENAME_BUFFER 20
+#define UNDO_C_PRESERVEARGS 21
+#define UNDO_C_SETOPTIONS 22
+#define UNDO_C_SET_SEARCH_GLOBALS 23
+#define UNDO_C_LOAD_TAGS 24
+#define UNDO_C_SELECT_TAGS 25
+#define UNDO_C_SET_EXIT_FLAG 26
+
+int cmd_oscmd(struct cmd_token *ct);
+int buff_insert_from_buffer_with_undo( struct cmd_token *,
+ struct buff_header *,int,struct buff_header *,int,int);
+int buff_delete_with_undo( struct cmd_token *,struct buff_header *,int,int);
+int buff_insert_with_undo( struct cmd_token *,
+ struct buff_header *,int,char *,int);
+int rename_edit_buffer(struct buff_header *,char *,struct cmd_token *);
+int cmd_setoptions(int,int,struct undo_token *);
+void tag_dump_database(struct tags *tp,struct cmd_token *uct);
+int buff_insert_char_with_undo(struct cmd_token *,
+ struct buff_header *,int,char);
+int set_search_string_with_undo(char *,struct cmd_token *uct);
+int cmd_tags(struct cmd_token *uct,int,int,int,char *);
+int tecmacro(struct buff_header *,struct cmd_token *,struct cmd_token **);
+void parser_cleanup_ctlist(struct cmd_token *);
+void free_cmd_token(struct cmd_token *);
+int parser_undo(struct undo_token *);
+void free_undo_token(struct undo_token *);
+void screen_reset_echo(struct cmd_token *);
+int parse_special_character(struct cmd_token *,int);
+void parse_input_character(struct cmd_token *,struct cmd_token *);
+void trace_mode(int, struct cmd_token *, struct cmd_token *);
+int execute_a_state(struct cmd_token *, struct cmd_token *);
+void tecundo_cleanup(struct undo_token *);
+int parse_any_arguments(struct cmd_token *,char *);
+int parse_more_than_one_arg(struct cmd_token *,char *);
+int parse_check_qname(struct cmd_token *,char);
+struct cmd_token *allocate_cmd_token(struct cmd_token *old_token);
+struct undo_token *allocate_undo_token(struct cmd_token *ct);
+void buff_free_line_buffer(struct buff_line *);
+
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