2 '<expr>' [ DEFUN | DEFMACRO | DEFVAR | TERM ] * '</expr>'
4 TERM = [ INT | STRING | SYMBOL | LIST | VAR | FUNCALL ]
7 '<defun fname="' FNAME ? ">'
13 '<defmacro fname="' FNAME ? ">'
19 '<args>' FIXED ? OPTIONAL ? REST ? '</args>'
22 '<fixed> VAR + '</fixed>'
25 '<optional>' VAR + '<optional>'
28 '<rest>' VAR '</rest>'
30 DEFVAR = DEFVAR-INT DEFVAR-STR DEFVAR-SYM
33 '<defvar vname="' VNAME '">'
35 [ INT POSSIBLE-INT-VALUE ? ] ?
39 <possible-value> [ INT | '<range>' INT INT '</range>' ] + </possible-value>
42 '<defvar vname"' VNAME '">'
44 [ STR DEFVAR-STR_VALUE ? ] ?
48 <possible-value> STR + </possible-value>
51 '<defvar vname"' VNAME '">'
53 [ SYMBOL POSSIBLE-SYM-VALUE ? ] ?
57 <possible-value> SYMBOL + </possible-value>
60 '<description>' [ TEXT | GETTEXT ] '</description>'
63 '<gettext>' TEXT '</gettext>'
66 '<integer>' INTEGER '</integer>'
68 '<string>' STRING '</string>'
70 '<symbol>' NAME '</symbol>'
72 '<list>' TERM * '</list>' | <list/>
75 '<varref vname="' VNAME '"/>'
78 '<funcall fname="' FNAME '">' TERM * '</funcall>'
84 | LT | LE | EQ | GE | GT | NOTEQ
85 | ADD | SUB | MUL | DIV | MOD
86 | LOGAND | LOGIOR | LOGXOR | LSH
87 | APPEND | CONCAT | LENGTH | NTH | COPY | INS | DEL
88 | PROGN | IF | WHEN | COND
89 | LOOP | WHILE | FOREACH | BREAK | RETURN
92 ;; TERM has a value, and is evaluated to a TERM as below.
93 ;; INT has an integer value, and is evaluated to itself .
94 ;; STRING has a string value, and is evaluated to itself.
95 ;; SYMBOL has a symbol value, and is evaluated to itself.
96 ;; LIST has a list value and, is evaluated to itself.
97 ;; VAR has a value of TERM that is assigned to the variable,
98 ;; and is evalued to that TERM.
99 ;; FUNCALL has a value of TERM that is returned by that function,
100 ;; and is evalued to that TERM.
102 INTTERM = INT | VAR (value is INT) | FUNCALL (return INT)
103 STRTERM = STR | VAR (value is STR) | FUNCALL (return STR)
104 SYMTERM = SYMBOL | VAR (value is SYMBOL) | FUNCALL (return SYMBOL)
105 LISTTERM = LIST | VAR (value is LIST) | FUNCALL (return LIST)
107 ;; Here after, when an argument is TERM, it is given to a function
108 ;; without being evaluted. Otherwise, an evaluated term is given.
110 SET = '<set vname="' VNAME '">' TERM '</set>'
111 ADD = '<add>' INTTERM + '</add>'
112 | '<add vname="' VNAME '">' INTTERM + '</add>'
113 SUB = '<sub>' INTTERM + '</sub>'
114 | '<sub vname="' VNAME '">' INTTERM + '</sub>'
115 MUL = '<mul>' INTTERM + '</mul>'
116 | '<mul vname="' VNAME '">' INTTERM + '</mul>'
117 DIB = '<div>' INTTERM + '</div>'
118 | '<div vname="' VNAME '">' INTTERM + '</div>'
119 MOD = '<mod>' INTTERM INTTERM '</mod>'
120 | '<mod vname="' VNAME '">' INTTERM '</div>'
121 LOGAND = '<logand> INTTERM + '</logand>'
122 | '<logand vname="' VNAME '">' INTTERM + '</logand>'
123 LOGIOR = '<logior> INTTERM + '</logior>'
124 | '<logior vname="' VNAME '">' INTTERM + '</logior>'
125 LOGXOR = '<logxor> INTTERM + '</logxor>'
126 | '<logxor vname="' VNAME '">' INTTERM + '</logxor>'
127 LSH = '<lsh>' INTTERM INTTERM '</lsh>'
128 | '<lsh vname="' VNAME '">' INTTERM '</mul>'
129 LT = '<lt>' INTTERM INTTERM '</lt>'
130 LE = '<le>' INTTERM INTTERM '</le>'
131 EQ = '<eq>' INTTERM INTTERM '</eq>'
132 NOTEQ = '<noteq>' INTTERM INTTERM '</noteq>'
133 GE = '<ge>' INTTERM INTTERM '</ge>'
134 GT ='<gt>' INTTERM INTTERM '</gt>'
135 APPEND = '<append>' TERM + '</append>'
136 | '<append vname=" VNAME '">' TERM + '</append>'
137 CONCAT = '<concat>' [ INTTERM | STRTERM | LISTTERM ] + '</concat>'
138 | '<concat vname=" VNAME '">' [ INTTERM | STRTERM | LISTTERM ] + '</concat>'
139 LENGTH = '<length>' [ STRTERM | LISTTERM ] '</length>'
140 NTH = '<nth>' INTTERM [ STRTERM | LISTTERM ] '</nth>'
141 COPY = '<copy>' LISTTERM '</nth>'
142 INS = '<ins vname="' VNAME '">' INTTERM [ STRTERM | LISTTERM ] '</ins>'
143 DEL = '<del vname="' VNAME '">' INTTERM INTTERM '</ins>'
144 AND = '<and>' TERM + '</and>'
145 OR = '<or>' TERM + '</or>'
146 NOT = '<not>' TERM '</not>'
147 PROGN = '<progn>' TERM * '</progn>'
148 IF = '<if>' TERM TERM TERM ? '</if>'
149 WHEN = '<when>' TERM TERM * '</when>'
150 COND = '<cond>' LIST + '</cond>'
151 LOOP = '<loop>' TERM + '</loop>'
152 WHILE = '<while>' TERM + '</while>'
153 FOREACH = '<foreach vname="' VNAME '">' TERM + '</foreach>'
154 BREAK = '<break>' TERM ? '</break>'
155 RETURN = '<return>' TERM ? '</return>'
156 QUOTE = '<quote>' TERM '</quote>'
157 EVAL = '<eval>' TERM '</eval>'
158 TYPE = '<type>' TERM '</type>'