digits))))))
-(defun js!selfcall (&rest args)
- (concat "(function(){" *newline* (apply #'indent args) "})()"))
+;;; Wrap X with a Javascript code to convert the result from
+;;; Javascript generalized booleans to T or NIL.
+(defun js!bool (x)
+ (concat "(" x "?" (ls-compile t) ": " (ls-compile nil) ")"))
+
+;;; Concatenate the arguments and wrap them with a self-calling
+;;; Javascript anonymous function. It is used to make some Javascript
+;;; statements valid expressions and provide a private scope as well.
+;;; It could be defined as function, but we could do some
+;;; preprocessing in the future.
+(defmacro js!selfcall (&body body)
+ `(concat "(function(){" *newline* (indent ,@body) "})()"))
;;; Printer
(literal sexp))
(define-compilation %while (pred &rest body)
- (concat "(function(){" *newline*
- (indent "while(" (ls-compile pred env) " !== " (ls-compile nil) "){" *newline*
- (indent (ls-compile-block body env))
- "}"
- "return " (ls-compile nil) ";" *newline*)
- "})()"))
+ (js!selfcall
+ "while(" (ls-compile pred env) " !== " (ls-compile nil) "){" *newline*
+ (indent (ls-compile-block body env))
+ "}"
+ "return " (ls-compile nil) ";" *newline*))
(define-compilation function (x)
(cond
(ls-compile ,form env)))
(define-compilation progn (&rest body)
- (concat "(function(){" *newline*
- (indent (ls-compile-block (butlast body) env)
- "return " (ls-compile (car (last body)) env) ";" *newline*)
- "})()"))
+ (js!selfcall
+ (ls-compile-block (butlast body) env)
+ "return " (ls-compile (car (last body)) env) ";" *newline*))
(define-compilation let (bindings &rest body)
(let ((bindings (mapcar #'ensure-list bindings)))
(define-compilation block (name &rest body)
(let ((tr (integer-to-string (incf *block-counter*))))
(let ((b (make-binding name 'block tr t)))
- (concat "(function(){" *newline*
- (indent "try {" *newline*
- (indent "return " (ls-compile `(progn ,@body)
- (extend-lexenv (list b) env 'block))
- ";" *newline*)
- "}" *newline*
- "catch (cf){" *newline*
- " if (cf.type == 'block' && cf.id == " tr ")" *newline*
- " return cf.value;" *newline*
- " else" *newline*
- " throw cf;" *newline*
- "}" *newline*)
- "})()"))))
+ (js!selfcall
+ "try {" *newline*
+ (indent "return " (ls-compile `(progn ,@body)
+ (extend-lexenv (list b) env 'block))
+ ";" *newline*)
+ "}" *newline*
+ "catch (cf){" *newline*
+ " if (cf.type == 'block' && cf.id == " tr ")" *newline*
+ " return cf.value;" *newline*
+ " else" *newline*
+ " throw cf;" *newline*
+ "}" *newline*))))
(define-compilation return-from (name &optional value)
(let ((b (lookup-in-lexenv name env 'block)))
(if b
- (concat "(function(){ throw ({"
- "type: 'block', "
- "id: " (binding-translation b) ", "
- "value: " (ls-compile value env) ", "
- "message: 'Return from unknown block " (symbol-name name) ".'"
- "})})()")
+ (js!selfcall
+ "throw ({"
+ "type: 'block', "
+ "id: " (binding-translation b) ", "
+ "value: " (ls-compile value env) ", "
+ "message: 'Return from unknown block " (symbol-name name) ".'"
+ "})")
(error (concat "Unknown block `" (symbol-name name) "'.")))))
(define-compilation catch (id &rest body)
- (concat "(function(){" *newline*
- (indent "var id = " (ls-compile id env) ";" *newline*
- "try {" *newline*
- (indent "return " (ls-compile `(progn ,@body))
- ";" *newline*)
- "}" *newline*
- "catch (cf){" *newline*
- " if (cf.type == 'catch' && cf.id == id)" *newline*
- " return cf.value;" *newline*
- " else" *newline*
- " throw cf;" *newline*
- "}" *newline*)
- "})()"))
+ (js!selfcall
+ "var id = " (ls-compile id env) ";" *newline*
+ "try {" *newline*
+ (indent "return " (ls-compile `(progn ,@body))
+ ";" *newline*)
+ "}" *newline*
+ "catch (cf){" *newline*
+ " if (cf.type == 'catch' && cf.id == id)" *newline*
+ " return cf.value;" *newline*
+ " else" *newline*
+ " throw cf;" *newline*
+ "}" *newline*))
(define-compilation throw (id &optional value)
- (concat "(function(){ throw ({"
- "type: 'catch', "
- "id: " (ls-compile id env) ", "
- "value: " (ls-compile value env) ", "
- "message: 'Throw uncatched.'"
- "})})()"))
+ (js!selfcall
+ "throw ({"
+ "type: 'catch', "
+ "id: " (ls-compile id env) ", "
+ "value: " (ls-compile value env) ", "
+ "message: 'Throw uncatched.'"
+ "})"))
(defvar *tagbody-counter* 0)
((integerp label) (integer-to-string label)))))
(if b
(js!selfcall
- (concat "throw ({"
- "type: 'tagbody', "
- "id: " (first (binding-translation b)) ", "
- "label: " (second (binding-translation b)) ", "
- "message: 'Attempt to GO to non-existing tag " n "'"
- "})" *newline*))
+ "throw ({"
+ "type: 'tagbody', "
+ "id: " (first (binding-translation b)) ", "
+ "label: " (second (binding-translation b)) ", "
+ "message: 'Attempt to GO to non-existing tag " n "'"
+ "})" *newline*)
(error (concat "Unknown tag `" n "'.")))))
(define-compilation unwind-protect (form &rest clean-up)
- (concat "(function(){" *newline*
- (indent "var ret = " (ls-compile nil) ";" *newline*
- "try {" *newline*
- (indent "ret = " (ls-compile form env) ";" *newline*)
- "} finally {" *newline*
- (indent (ls-compile-block clean-up env))
- "}" *newline*
- "return ret;" *newline*)
- "})()"))
+ (js!selfcall
+ "var ret = " (ls-compile nil) ";" *newline*
+ "try {" *newline*
+ (indent "ret = " (ls-compile form env) ";" *newline*)
+ "} finally {" *newline*
+ (indent (ls-compile-block clean-up env))
+ "}" *newline*
+ "return ret;" *newline*))
;;; A little backquote implementation without optimizations of any
(let ,(mapcar (lambda (arg) `(,arg (ls-compile ,arg env))) args)
,@body)))
-(defun compile-bool (x)
- (concat "(" x "?" (ls-compile t) ": " (ls-compile nil) ")"))
-
;;; DECLS is a list of (JSVARNAME TYPE LISPFORM) declarations.
(defmacro type-check (decls &body body)
- `(concat "(function(){" *newline*
- (indent ,@(mapcar (lambda (decl)
- `(concat "var " ,(first decl) " = " ,(third decl) ";" *newline*))
- decls)
-
- ,@(mapcar (lambda (decl)
- `(concat "if (typeof " ,(first decl) " != '" ,(second decl) "')" *newline*
- (indent "throw 'The value ' + "
- ,(first decl)
- " + ' is not a type "
- ,(second decl)
- ".';"
- *newline*)))
- decls)
- (concat "return " (progn ,@body) ";" *newline*))
- "})()"))
+ `(js!selfcall
+ ,@(mapcar (lambda (decl)
+ `(concat "var " ,(first decl) " = " ,(third decl) ";" *newline*))
+ decls)
+ ,@(mapcar (lambda (decl)
+ `(concat "if (typeof " ,(first decl) " != '" ,(second decl) "')" *newline*
+ (indent "throw 'The value ' + "
+ ,(first decl)
+ " + ' is not a type "
+ ,(second decl)
+ ".';"
+ *newline*)))
+ decls)
+ (concat "return " (progn ,@body) ";" *newline*)))
(defun num-op-num (x op y)
(type-check (("x" "number" x) ("y" "number" y))
(define-builtin mod (x y) (num-op-num x "%" y))
-(define-builtin < (x y) (compile-bool (num-op-num x "<" y)))
-(define-builtin > (x y) (compile-bool (num-op-num x ">" y)))
-(define-builtin = (x y) (compile-bool (num-op-num x "==" y)))
-(define-builtin <= (x y) (compile-bool (num-op-num x "<=" y)))
-(define-builtin >= (x y) (compile-bool (num-op-num x ">=" y)))
+(define-builtin < (x y) (js!bool (num-op-num x "<" y)))
+(define-builtin > (x y) (js!bool (num-op-num x ">" y)))
+(define-builtin = (x y) (js!bool (num-op-num x "==" y)))
+(define-builtin <= (x y) (js!bool (num-op-num x "<=" y)))
+(define-builtin >= (x y) (js!bool (num-op-num x ">=" y)))
(define-builtin numberp (x)
- (compile-bool (concat "(typeof (" x ") == \"number\")")))
+ (js!bool (concat "(typeof (" x ") == \"number\")")))
(define-builtin floor (x)
(type-check (("x" "number" x))
(define-builtin cons (x y) (concat "({car: " x ", cdr: " y "})"))
(define-builtin consp (x)
- (compile-bool
- (concat "(function(){" *newline*
- (indent "var tmp = " x ";" *newline*
- "return (typeof tmp == 'object' && 'car' in tmp);" *newline*)
- "})()")))
+ (js!bool
+ (js!selfcall
+ "var tmp = " x ";" *newline*
+ "return (typeof tmp == 'object' && 'car' in tmp);" *newline*)))
(define-builtin car (x)
- (concat "(function(){" *newline*
- (indent "var tmp = " x ";" *newline*
- "return tmp === " (ls-compile nil)
- "? " (ls-compile nil)
- ": tmp.car;" *newline*)
- "})()"))
+ (js!selfcall
+ "var tmp = " x ";" *newline*
+ "return tmp === " (ls-compile nil)
+ "? " (ls-compile nil)
+ ": tmp.car;" *newline*))
(define-builtin cdr (x)
- (concat "(function(){" *newline*
- (indent "var tmp = " x ";" *newline*
- "return tmp === " (ls-compile nil) "? "
- (ls-compile nil)
- ": tmp.cdr;" *newline*)
- "})()"))
+ (js!selfcall
+ "var tmp = " x ";" *newline*
+ "return tmp === " (ls-compile nil) "? "
+ (ls-compile nil)
+ ": tmp.cdr;" *newline*))
(define-builtin setcar (x new)
(type-check (("x" "object" x))
(concat "(x.cdr = " new ")")))
(define-builtin symbolp (x)
- (compile-bool
- (concat "(function(){" *newline*
- (indent "var tmp = " x ";" *newline*
- "return (typeof tmp == 'object' && 'name' in tmp);" *newline*)
- "})()")))
+ (js!bool
+ (js!selfcall
+ "var tmp = " x ";" *newline*
+ "return (typeof tmp == 'object' && 'name' in tmp);" *newline*)))
(define-builtin make-symbol (name)
(type-check (("name" "string" name))
(define-builtin symbol-name (x)
(concat "(" x ").name"))
-(define-builtin eq (x y) (compile-bool (concat "(" x " === " y ")")))
-(define-builtin equal (x y) (compile-bool (concat "(" x " == " y ")")))
+(define-builtin eq (x y) (js!bool (concat "(" x " === " y ")")))
+(define-builtin equal (x y) (js!bool (concat "(" x " == " y ")")))
(define-builtin string (x)
(type-check (("x" "number" x))
"String.fromCharCode(x)"))
(define-builtin stringp (x)
- (compile-bool (concat "(typeof(" x ") == \"string\")")))
+ (js!bool (concat "(typeof(" x ") == \"string\")")))
(define-builtin string-upcase (x)
(type-check (("x" "string" x))
"x.length"))
(define-compilation slice (string a &optional b)
- (concat "(function(){" *newline*
- (indent "var str = " (ls-compile string env) ";" *newline*
- "var a = " (ls-compile a env) ";" *newline*
- "var b;" *newline*
- (if b
- (concat "b = " (ls-compile b env) ";" *newline*)
- "")
- "return str.slice(a,b);" *newline*)
- "})()"))
+ (js!selfcall
+ "var str = " (ls-compile string env) ";" *newline*
+ "var a = " (ls-compile a env) ";" *newline*
+ "var b;" *newline*
+ (if b
+ (concat "b = " (ls-compile b env) ";" *newline*)
+ "")
+ "return str.slice(a,b);" *newline*))
(define-builtin char (string index)
(type-check (("string" "string" string)
(concat "(" (ls-compile func env) ")()")
(let ((args (butlast args))
(last (car (last args))))
- (concat "(function(){" *newline*
- (indent "var f = " (ls-compile func env) ";" *newline*
- "var args = [" (join (mapcar (lambda (x)
- (ls-compile x env))
- args)
- ", ")
- "];" *newline*
- "var tail = (" (ls-compile last env) ");" *newline*
- (indent "while (tail != " (ls-compile nil) "){" *newline*
- " args.push(tail.car);" *newline*
- " tail = tail.cdr;" *newline*
- "}" *newline*
- "return f.apply(this, args);" *newline*)
- "})()")))))
+ (js!selfcall
+ "var f = " (ls-compile func env) ";" *newline*
+ "var args = [" (join (mapcar (lambda (x)
+ (ls-compile x env))
+ args)
+ ", ")
+ "];" *newline*
+ "var tail = (" (ls-compile last env) ");" *newline*
+ "while (tail != " (ls-compile nil) "){" *newline*
+ " args.push(tail.car);" *newline*
+ " tail = tail.cdr;" *newline*
+ "}" *newline*
+ "return f.apply(this, args);" *newline*))))
(define-builtin js-eval (string)
(type-check (("string" "string" string))
"eval.apply(window, [string])"))
(define-builtin error (string)
- (concat "(function (){ throw " string "; })()"))
+ (js!selfcall "throw " string ";" *newline*))
(define-builtin new () "{}")
(define-builtin get (object key)
- (concat "(function(){" *newline*
- (indent "var tmp = " "(" object ")[" key "];" *newline*
- "return tmp == undefined? " (ls-compile nil) ": tmp ;" *newline*)
- "})()"))
+ (js!selfcall
+ "var tmp = " "(" object ")[" key "];" *newline*
+ "return tmp == undefined? " (ls-compile nil) ": tmp ;" *newline*))
(define-builtin set (object key value)
(concat "((" object ")[" key "] = " value ")"))
(define-builtin in (key object)
- (compile-bool (concat "((" key ") in (" object "))")))
+ (js!bool (concat "((" key ") in (" object "))")))
(define-builtin functionp (x)
- (compile-bool (concat "(typeof " x " == 'function')")))
+ (js!bool (concat "(typeof " x " == 'function')")))
(define-builtin write-string (x)
(type-check (("x" "string" x))
projects / jscl.git / blobdiff