JoBoEVD/UglifyJS
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104 Commits

Author SHA1 Message Date
Mihai Bazon
30faaf13ed more sequence optimizations (lift some sequences above binary/unary expressions so that we can avoid parens) 2012-10-22 11:58:06 +03:00
Mihai Bazon
afb7faa6fa more optimizations for some break/continue cases 2012-10-18 15:14:57 +03:00
Mihai Bazon
1b6f8d463f remove the $self hack 
operations are destructive anyway, so there's no point to clone the nodes in
the transformer.  speed++
 2012-10-12 11:07:35 +03:00
Mihai Bazon
72cb5328ee fix in_boolean_context() (two tests were broken) 2012-10-12 10:49:41 +03:00
Mihai Bazon
172aa7a93c cleanup 
- use prototype-less objects where feasible (minor speed improvement)
- get rid of HOP
 2012-10-11 11:07:42 +03:00
Mihai Bazon
9cdaed9860 fix node name 2012-10-10 23:16:40 +03:00
Mihai Bazon
dacce1b1fa seems cleaner if AST_Label doesn't inherit from AST_SymbolDeclaration 2012-10-10 11:37:51 +03:00
Mihai Bazon
f26f3b44bc small improvements in wrap_commonjs: 
- use MAP.splice instead of a BlockStatement to inject code (avoids some
  warnings in the linter)
- use the original symbol in exports, so that we get the proper source mapping
 2012-10-10 11:28:05 +03:00
Mihai Bazon
a84d07e312 add AST_Infinity node 2012-10-09 18:35:53 +03:00
Mihai Bazon
1b0aab2ce9 added $propdoc to AST nodes and some cleanups 
hopefully we can make the AST documentation self-generating
 2012-10-09 18:20:39 +03:00
Mihai Bazon
9ead49641d minor AST cleanup (AST_BlockStatement may inherit from AST_Block) 2012-10-09 13:59:17 +03:00
Mihai Bazon
e1862cd36f add --ast-help 
displays a rather cruel description of the AST classes, derived
directly from the node definitions.
 2012-10-09 13:21:21 +03:00
Mihai Bazon
dd8286bce1 added --self to easily get a browser-runnable version of UglifyJS 2012-10-08 12:55:18 +03:00
Mihai Bazon
11863d6f9a more cleanup (dropped AST_SwitchBlock) 2012-10-03 15:52:31 +03:00
Mihai Bazon
3412498795 AST cleanup (dropped AST_StatementBase) 2012-10-03 15:41:11 +03:00
Mihai Bazon
e1098b04a7 "use strict"; 2012-10-02 12:45:58 +03:00
Mihai Bazon
347160c631 add AST_SymbolConst for names defined with const 2012-10-02 12:22:39 +03:00
Mihai Bazon
896444482a minor 2012-09-28 11:12:47 +03:00
Mihai Bazon
a24e7ee976 checkpoint (refactoring, WIP) 2012-09-26 12:16:16 +03:00
Mihai Bazon
a83b28503f properly drop mutually-referring declarations that are not otherwise 
referenced and have no side effects
 2012-09-23 12:47:34 +03:00
Mihai Bazon
5491e1d7b1 better support for multiple input files: 
- use a single AST_Toplevel node for all files
- keep original source filename in the tokens
 2012-09-21 14:19:05 +03:00
Mihai Bazon
a4d2340c73 fixed label scope/mangling 2012-09-18 19:26:46 +03:00
Mihai Bazon
3da0ac4897 support for directives 2012-09-18 13:21:09 +03:00
Mihai Bazon
21968285e8 added AST_NaN (output as 0/0) 2012-09-18 10:53:46 +03:00
Mihai Bazon
4e0262bdfb figure out label targets 2012-09-15 16:05:17 +03:00
Mihai Bazon
924aa58060 more optimizations that v1 does and some cleanups 
- a = a + x ==> a+=x
- joining consecutive var statements (hoisting is not always desirable)
- x == false ==> x == 0, x != true ==> x != 1
- x, x ==> x; x = exp(), x ==> x = exp()
- discarding useless break-s
 2012-09-14 15:36:38 +03:00
Mihai Bazon
8e82d8d94c fixed some mess with symbols/scope 
- all symbols now have a `thedef` property which is a SymbolDef object,
  instead of the `uniq` that we had before (pointing to the first occurrence
  of the name as declaration).

- for undeclared symbols we still create a SymbolDef object in the toplevel
  scope but mark it "undeclared"

- we can now call figure_out_scope after squeezing, which is useful in order
  not to mangle names that were dropped by the squeezer
 2012-09-11 15:42:28 +03:00
Mihai Bazon
43c75c9248 checkpoint 2012-09-07 18:55:13 +03:00
Mihai Bazon
b77574ea1c fixed tests (need to drop the toplevel block in "expected" if it's a single statement) 2012-09-07 11:22:01 +03:00
Mihai Bazon
8633b0073f cleaned up usage of AST_BlockStatement 
The following nodes were instances of AST_BlockStatement: AST_Scope,
AST_SwitchBlock, AST_SwitchBranch.  Also, AST_Try, AST_Catch, AST_Finally
were having a body instanceof AST_BlockStatement.

Overloading the meaning of AST_BlockStatement this way turned out to be a
mess; we now have an AST_Block class that is the base class for things
having a block of statements (might or might not be bracketed).  The
`this.body` of AST_Scope, AST_Try, AST_Catch, AST_Finally is now an array of
statements (as they inherit from AST_Block).

Avoiding calling superclass's _walk function in walkers (turns out we walked
a node multiple times).
 2012-09-05 11:39:43 +03:00
Mihai Bazon
f702264617 jumps, try and definitions are statements too 2012-09-03 12:39:02 +03:00
Mihai Bazon
6d0db4ce14 an AST_If is too a StatementWithBody 2012-09-03 12:11:44 +03:00
Mihai Bazon
d7c1dc6c05 a LabeledStatement should be in fact a StatementWithBody 
This fixes output for:

    if (foo) {
        moo: if (bar) {
            break moo;
        }
    } else {
        baz();
    }

(the labeled statement must be outputted inside brackets)
 2012-09-03 12:05:10 +03:00
Mihai Bazon
66c869c8f6 switch branches must be declared required so that the compressor doesn't 
replace nodes with a single statement.

looks stable for now, though mess begins to sink in.  need to review the AST
hierarchy.
 2012-09-03 11:05:59 +03:00
Mihai Bazon
86cff2029f docstring for AST_StatementWithBody 2012-08-28 15:39:53 +03:00
Mihai Bazon
7fcb6bcb12 fix code generator for this case: 
if (foo) {
  with (bar)
    if (baz)
      x();
} else y();

(the compressor removes the brackets since the consequent consists of a
single statement, but the codegen must include the brackets because
otherwise the `else` would refer to the inner `if`)
 2012-08-28 15:29:58 +03:00
Mihai Bazon
58a3b5e93f update (c) years 2012-08-27 11:01:41 +03:00
Mihai Bazon
95b18e54a4 added license 2012-08-22 21:28:59 +03:00
Mihai Bazon
159a6f048c wrote more of the compressor and added some tests 2012-08-22 15:21:58 +03:00
Mihai Bazon
fb8c9e3a48 declare some properties in the node constructor so that they're copied in clone 2012-08-22 00:01:55 +03:00
Mihai Bazon
1b839eb35b hint that brackets may be required in AST_BlockStatement 2012-08-21 19:16:05 +03:00
Mihai Bazon
ffe58a9961 cleaned up some mess and started the actual compressor 2012-08-21 16:14:43 +03:00
Mihai Bazon
7ae1c600a2 some reorganization 
(moved pretty much everything that relates to scope in scope.js, added a
module for NodeJS that can be used with require() and exports everything.)
 2012-08-21 13:53:16 +03:00
Mihai Bazon
92bd53b513 handle labels properly 
(they can't be handled the same way as variables in a scope)
 2012-08-21 12:45:06 +03:00
Mihai Bazon
99456c6156 more fixes: 
- added walker for AST_ObjectProperty
- handle redefinitions properly (only mangle one symbol, make them all point
  to a single definition)

DynarchLIB seems to run fine after mangling + compressed output.
 2012-08-21 11:38:49 +03:00
Mihai Bazon
458e251d7e added mangler and other stuff 2012-08-20 17:32:35 +03:00
Mihai Bazon
1fe0ff9fff doc (WIP) 2012-08-20 00:35:54 +03:00
Mihai Bazon
6c35135ace simple visitor API and code to figure out scope and references 2012-08-19 15:57:50 +03:00
Mihai Bazon
13f7b119bb code generator finally seems to work properly 2012-08-17 15:59:42 +03:00
Mihai Bazon
c7c163b82e lots'o'fixes in the output routines; still a looong way to go. 2012-08-16 21:36:16 +03:00
Mihai Bazon
7f273c3b89 codegen and dropped the useless walker 2012-08-16 18:11:04 +03:00
Mihai Bazon
c0ba9e2986 WIP 2012-08-15 14:50:27 +03:00
Mihai Bazon
861e26a666 WIP 2012-06-03 23:10:31 +03:00
Mihai Bazon
562b12f021 init repo 2012-05-27 14:13:26 +03:00