X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=xex.txt;h=7069f4b46a5534658b86ebf80767e74d4e7384e1;hb=8e50033918bee037d940226406c87b9bc97779da;hp=5e58f74122e7544fbab25b15f53bae3da3d17494;hpb=c6e7c78626156216ba804f51fe818edbc63d4955;p=m17n%2Fm17n-lib-cs.git
diff --git a/xex.txt b/xex.txt
index 5e58f74..7069f4b 100644
--- a/xex.txt
+++ b/xex.txt
@@ -1,51 +1,56 @@
EXPR =
- '' [ DEFUN | DEFMACRO | DEFVAR | TERM ] * ''
+ '' [ DEFUN | DEFVAR | TERM ] * ''
-TERM = [ VAR | INT | STRING | SYMBOL | LIST | FUNCALL ]
+TERM = [ INT | STRING | SYMBOL | LIST | VAR | FUNCALL ]
DEFUN =
- ''
+ ''
ARGS ?
- BODY ?
+ TERM *
''
ARGS =
- '' VAR * OPTIONAL ? REST ? ''
- | '' VAR * OPTIONAL ? REST ? ''
+ '' FIXED ? OPTIONAL ? REST ? ''
+ | '' FIXED ? OPTIONAL ? REST ? ''
+
+FIXED =
+ ' VAR + ''
OPTIONAL =
- '' VAR *
+ '' VAR + ''
REST =
- '' VAR
-
-BODY =
- '' TERM * ''
+ '' VAR ''
-DEFVAR = DEFVAR-INT DEFVAR-STR
+DEFVAR = DEFVAR-INT DEFVAR-STR DEFVAR-SYM
DEFVAR-INT =
- ''
+ ''
DESCRIPTION ?
INT ?
- [ INT | '' INT INT '' ] *
+ [ INT | '' INT INT '' ] *
''
DEFVAR-STR =
- ''
+ ''
DESCRIPTION ?
STR ?
STR *
''
+DEFVAR-SYM =
+ ''
+ DESCRIPTION ?
+ SYMBOL ?
+ SYMBOL *
+ ''
+
DESCRIPTION =
'' [ TEXT | GETTEXT ] ''
GETTEXT =
'' TEXT ''
-VAR =
- ''
INT =
'' INTEGER ''
STR =
@@ -55,43 +60,87 @@ SYMBOL =
LIST =
'' TERM * '
' |
+VAR =
+ ''
+
FUNCALL =
- '' TERM * ''
- | '<' PREDEFINED-FUNC-SYMBOL '>' TERM * ''
-
-PREDEFINED-FUNC-SYMBOL =
- 'set'
- | 'and' | 'or' | 'not'
- | 'lt' | 'le' | 'eq' | 'ge' | 'gt'
- | 'noteq'
- | 'add' | 'sub' | 'mul' | 'div' | 'mod'
- | 'add-set' | 'sub-set' | 'mul-set' | 'div-set' | 'mod-set'
- | 'logand' | 'logior' | 'logxor' | 'lsh'
- | 'logand-set' | 'logior-set' | 'logxor-set' | 'lsh-set'
- | 'append' | 'concat' | 'nth' | 'copy' | 'ins' | 'del'
- | 'progn' | 'if' | 'when' | 'cond'
- | 'while' | 'for' | 'foreach'
- | 'eval' | 'type'
-
-PREDEFINED-FUNC-NAME =
- PREDEFINED-FUNC-SYMBOL
- | '='
- | '&&' | '||' | '!'
- | '<' | '<=' | '==' | '>=' | '>'
- | '!='
- | '+' | '-' | '*' | '/' | '%'
- | '+=' | '-=' | '*=' | '/=' | '%='
- | '&=' | '|=' | '~=' | '<<=' | '>>='
-
-TRUE =
- '0'
-FALSE =
- '1'
-
-;; TERM is evaluated to a TERM.
-;; INT is evaluated to itself.
-;; STRING is evaluated to itself.
-;; SYMBOL is evaluated to itself.
-;; LIST is evaluated to itself.
-;; VAR is evaluated to TERM that is set to that variable.
-;; FUNCALL is evaluated to TERM returned by that function.
+ '' TERM * ''
+ | PREDEFINED
+
+PREDEFINED =
+ 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 .
+;; STRING has a string value, and is evaluated to itself.
+;; SYMBOL has a symbol value, and is evaluated to itself.
+;; LIST has a list value and, is evaluated to itself.
+;; VAR has a value of TERM that is assigned to the variable,
+;; and is evalued to that TERM.
+;; FUNCALL has a value of TERM that is returned by that function,
+;; and is evalued to that TERM.
+
+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 = '' ANYTERM ''
+ADD = '' INTTERM + ''
+ | '' INTTERM + ''
+SUB = '' INTTERM + ''
+ | '' INTTERM + ''
+MUL = '' INTTERM + ''
+ | '' INTTERM + ''
+DIB = '' INTTERM + '
'
+ | '' INTTERM + '
'
+MOD = '' INTTERM INTTERM ''
+ | '' INTTERM ''
+LOGAND = ' INTTERM + ''
+ | '' INTTERM + ''
+LOGIOR = ' INTTERM + ''
+ | ' vname="' VNAME '">' INTTERM + ''
+LOGXOR = ' INTTERM + ''
+ | ' vname="' VNAME '">' INTTERM + ''
+LSH = '' INTTERM INTTERM ''
+ | '' INTTERM ''
+LT = '' INTTERM INTTERM ''
+LE = '' INTTERM INTTERM ''
+EQ = '' INTTERM INTTERM ''
+NOTEQ = '' INTTERM INTTERM ''
+GE = '' INTTERM INTTERM ''
+GT ='' INTTERM INTTERM ''
+APPEND = '' ANYTERM + ''
+CONCAT = '' [ INTTERM | STRTERM | LISTTERM ] + ''
+LENGTH = '' [ STRTERM | LISTTERM ] ''
+NTH = '' INTTERM [ STRTERM | LISTTERM ] ''
+COPY = '' LISTTERM ''
+INS = '' INTTERM [ STRTERM | LISTTERM ] ''
+DEL = '' INTTERM INTTERM ''
+AND = '' TERM + ''
+OR = '' TERM + ''
+NOT = '' TERM ''
+PROGN = '' TERM * ''
+IF = '' TERM TERM TERM ? ''
+WHEN = '' TERM TERM * ''
+COND = '' LIST + ''
+LOOP = '' TERM + ''
+WHILE = '' TERM + ''
+FOREACH = '' TERM + ''
+BREAK = '' ANYTERM ? ''
+RETURN = '' ANYTERM ? ''
+QUOTE = '' TERM '
'
+EVAL = '' TERM ''
+TYPE = '' ANYTERM ''