EXPR =
- '<expr>' [ DEFUN | DEFVAR | TERM ] * '</expr>'
+ '<expr>' [ DEFUN | DEFMACRO | DEFVAR | TERM ] * '</expr>'
TERM = [ INT | STRING | SYMBOL | LIST | VAR | FUNCALL ]
TERM *
'</defun>'
+DEFMACRO =
+ '<defmacro fname="' FNAME ? ">'
+ ARGS ?
+ TERM *
+ '</defmacro>'
+
ARGS =
'<args>' FIXED ? OPTIONAL ? REST ? '</args>'
- | '<args-unevalled>' FIXED ? OPTIONAL ? REST ? '</args-unevalled>'
FIXED =
'<fixed> VAR + '</fixed>'
REST =
'<rest>' VAR '</rest>'
-DEFVAR = DEFVAR-INT DEFVAR-STR
+DEFVAR = DEFVAR-INT DEFVAR-STR DEFVAR-SYM
DEFVAR-INT =
'<defvar vname="' VNAME '">'
DESCRIPTION ?
- INT ?
- <possible-value> [ INT | '<range>' INT INT '</range>' ] *</possible-value>
+ [ INT POSSIBLE-INT-VALUE ? ] ?
'</defvar>'
+POSSIBLE-INT-VALUE =
+ <possible-value> [ INT | '<range>' INT INT '</range>' ] + </possible-value>
+
DEFVAR-STR =
'<defvar vname"' VNAME '">'
DESCRIPTION ?
- STR ?
- <possible-value> STR * </possible-value>
+ [ STR DEFVAR-STR_VALUE ? ] ?
+ '</defvar>'
+
+DEFVAR-STR_VALUE =
+ <possible-value> STR + </possible-value>
+
+DEFVAR-SYM =
+ '<defvar vname"' VNAME '">'
+ DESCRIPTION ?
+ [ SYMBOL POSSIBLE-SYM-VALUE ? ] ?
'</defvar>'
+POSSIBLE-SYM-VALUE =
+ <possible-value> SYMBOL + </possible-value>
+
DESCRIPTION =
'<description>' [ TEXT | GETTEXT ] '</description>'
FUNCALL =
'<funcall fname="' FNAME '">' TERM * '</funcall>'
- | '<' PREDEFINED '>' TERM * '</' PREDEFINED '>'
- | '<' PREDEFINED 'vname="' VNAME '">' TERM * '</' PREDEFINED '>'
+ | PREDEFINED
PREDEFINED =
- 'set'
- | 'and' | 'or' | 'not'
- | 'lt' | 'le' | 'eq' | 'ge' | 'gt' | 'noteq'
- | 'add' | 'sub' | 'mul' | 'div' | 'mod'
- | 'logand' | 'logior' | 'logxor' | 'lsh'
- | 'append' | 'concat' | 'nth' | 'copy' | 'ins' | 'del'
- | 'progn' | 'if' | 'when' | 'cond'
- | 'loop' | 'break' | 'while' | 'foreach'
- | 'quote' | 'eval' | 'type'
+ SET
+ | AND | OR | NOT
+ | LT | LE | EQ | GE | GT | NOTEQ
+ | ADD | SUB | MUL | DIV | MOD
+ | LOGAND | LOGIOR | LOGXOR | LSH
+ | APPEND | CONCAT | LENGTH | NTH | COPY | INS | DEL
+ | PROGN | IF | WHEN | COND
+ | LOOP | WHILE | FOREACH | BREAK | RETURN
+ | QUOTE | EVAL | TYPE
;; TERM has a value, and is evaluated to a TERM as below.
;; INT has an integer value, and is evaluated to itself .
INTTERM = INT | VAR (value is INT) | FUNCALL (return INT)
STRTERM = STR | VAR (value is STR) | FUNCALL (return STR)
+SYMTERM = SYMBOL | VAR (value is SYMBOL) | FUNCALL (return SYMBOL)
LISTTERM = LIST | VAR (value is LIST) | FUNCALL (return LIST)
-ANYTERM = TERM
;; Here after, when an argument is TERM, it is given to a function
;; without being evaluted. Otherwise, an evaluated term is given.
-'<set vname="' VNAME '">' ANYTERM '</set>'
-'<add>' INTTERM + '</add>'
-'<add vname="' VNAME '">' INTTERM + '</add>'
-'<sub>' INTTERM + '</sub>'
-'<sub vname="' VNAME '">' INTTERM + '</sub>'
-'<mul>' INTTERM + '</mul>'
-'<mul vname="' VNAME '">' INTTERM + '</mul>'
-'<div>' INTTERM + '</div>'
-'<div vname="' VNAME '">' INTTERM + '</div>'
-'<mod>' INTTERM INTTERM '</mod>'
-'<mod vname="' VNAME '">' INTTERM '</div>'
-'<logand> INTTERM + '</logand>'
-'<logand vname="' VNAME '">' INTTERM + '</logand>'
-'<logior> INTTERM + '</logior>'
-'<logior> vname="' VNAME '">' INTTERM + '</logior>'
-'<logxor> INTTERM + '</logxor>'
-'<logxor> vname="' VNAME '">' INTTERM + '</logxor>'
-'<lsh>' INTTERM INTTERM '</lsh>'
-'<lsh vname="' VNAME '">' INTTERM '</mul>'
-'<lt>' INTTERM INTTERM '</lt>'
-'<le>' INTTERM INTTERM '</le>'
-'<eq>' INTTERM INTTERM '</eq>'
-'<noteq>' INTTERM INTTERM '</noteq>'
-'<ge>' INTTERM INTTERM '</ge>'
-'<gt>' INTTERM INTTERM '</gt>'
-'<append>' ANYTERM + '</append>'
-'<concat>' [ INTTERM | STRTERM | LISTTERM ] + '</concat>'
-'<nth>' INTTERM [ STRTERM | LISTTERM ] '</nth>'
-'<copy>' LISTTERM '</nth>'
-'<ins vname="' VNAME '">' INTTERM [ STRTERM | LISTTERM ] '</ins>'
-'<del vname="' VNAME '">' INTTERM INTTERM '</ins>'
-'<and>' TERM + '</and>'
-'<or>' TERM + '</or>'
-'<not>' TERM '</not>'
-'<progn>' TERM * '</progn>'
-'<if>' TERM TERM TERM ? '</if>'
-'<when>' TERM TERM * '</when>'
-'<cond>' LIST + '</cond>'
-'<loop>' TERM + '</loop>'
-'<while>' TERM + '</while>'
-'<foreach vname="' VNAME '">' TERM + '</foreach>'
-'<quote>' TERM '</quote>'
-'<eval>' TERM '</eval>'
-'<type>' ANYTERM '</type>'
+SET = '<set vname="' VNAME '">' TERM '</set>'
+ADD = '<add>' INTTERM + '</add>'
+ | '<add vname="' VNAME '">' INTTERM + '</add>'
+SUB = '<sub>' INTTERM + '</sub>'
+ | '<sub vname="' VNAME '">' INTTERM + '</sub>'
+MUL = '<mul>' INTTERM + '</mul>'
+ | '<mul vname="' VNAME '">' INTTERM + '</mul>'
+DIB = '<div>' INTTERM + '</div>'
+ | '<div vname="' VNAME '">' INTTERM + '</div>'
+MOD = '<mod>' INTTERM INTTERM '</mod>'
+ | '<mod vname="' VNAME '">' INTTERM '</div>'
+LOGAND = '<logand> INTTERM + '</logand>'
+ | '<logand vname="' VNAME '">' INTTERM + '</logand>'
+LOGIOR = '<logior> INTTERM + '</logior>'
+ | '<logior vname="' VNAME '">' INTTERM + '</logior>'
+LOGXOR = '<logxor> INTTERM + '</logxor>'
+ | '<logxor vname="' VNAME '">' INTTERM + '</logxor>'
+LSH = '<lsh>' INTTERM INTTERM '</lsh>'
+ | '<lsh vname="' VNAME '">' INTTERM '</mul>'
+LT = '<lt>' INTTERM INTTERM '</lt>'
+LE = '<le>' INTTERM INTTERM '</le>'
+EQ = '<eq>' INTTERM INTTERM '</eq>'
+NOTEQ = '<noteq>' INTTERM INTTERM '</noteq>'
+GE = '<ge>' INTTERM INTTERM '</ge>'
+GT ='<gt>' INTTERM INTTERM '</gt>'
+APPEND = '<append>' TERM + '</append>'
+ | '<append vname=" VNAME '">' TERM + '</append>'
+CONCAT = '<concat>' [ INTTERM | STRTERM | LISTTERM ] + '</concat>'
+ | '<concat vname=" VNAME '">' [ INTTERM | STRTERM | LISTTERM ] + '</concat>'
+LENGTH = '<length>' [ STRTERM | LISTTERM ] '</length>'
+NTH = '<nth>' INTTERM [ STRTERM | LISTTERM ] '</nth>'
+COPY = '<copy>' LISTTERM '</nth>'
+INS = '<ins vname="' VNAME '">' INTTERM [ STRTERM | LISTTERM ] '</ins>'
+DEL = '<del vname="' VNAME '">' INTTERM INTTERM '</ins>'
+AND = '<and>' TERM + '</and>'
+OR = '<or>' TERM + '</or>'
+NOT = '<not>' TERM '</not>'
+PROGN = '<progn>' TERM * '</progn>'
+IF = '<if>' TERM TERM TERM ? '</if>'
+WHEN = '<when>' TERM TERM * '</when>'
+COND = '<cond>' LIST + '</cond>'
+LOOP = '<loop>' TERM + '</loop>'
+WHILE = '<while>' TERM + '</while>'
+FOREACH = '<foreach vname="' VNAME '">' TERM + '</foreach>'
+BREAK = '<break>' TERM ? '</break>'
+RETURN = '<return>' TERM ? '</return>'
+QUOTE = '<quote>' TERM '</quote>'
+EVAL = '<eval>' TERM '</eval>'
+TYPE = '<type>' TERM '</type>'