Alex Lam S.L
484e484571
fix corner case in inline ( #2720 )
2018-01-04 23:38:37 +08:00
Alex Lam S.L
a6873a3859
forbid block-scoped AST_Defun in strict mode ( #2718 )
2018-01-04 18:45:51 +08:00
Alex Lam S.L
7a6d452b54
preserve constant modification under strict mode ( #2717 )
2018-01-04 15:53:53 +08:00
Alex Lam S.L
9b58b54e2d
extend inline ( #2714 )
...
- compress `function` with variables within loops
- restrict to `AST_Var` for better compatibility with ES6+
2018-01-04 12:58:40 +08:00
Alex Lam S.L
c598a12af9
apply collapse_vars to loop conditions ( #2712 )
2018-01-04 03:18:28 +08:00
Alex Lam S.L
cfe3a98ce5
drop unused assignment based on reduce_vars ( #2709 )
2018-01-04 01:03:33 +08:00
Alex Lam S.L
14778e049b
fix reduce_vars on AST_Defun ( #2708 )
2018-01-03 17:18:38 +08:00
Alex Lam S.L
7d3cddf9d6
inline functions with AST_Var ( #2688 )
2018-01-03 01:54:44 +08:00
Alex Lam S.L
6dead95eb3
enhance collapse_vars ( #2704 )
2018-01-02 18:42:15 +08:00
Alex Lam S.L
cc931b3ad8
enhance if_return ( #2703 )
2018-01-02 15:09:51 +08:00
Alex Lam S.L
d838b4b52e
reset argument value within loop after inline ( #2699 )
2018-01-02 01:24:53 +08:00
Alex Lam S.L
2f3bddbaca
scan within IIFEs of assigned values ( #2702 )
...
fixes #2701
2018-01-02 01:24:23 +08:00
Alex Lam S.L
673b071637
enhance join_vars & sequences ( #2697 )
...
- nudge declarations without assignments
- within `AST_BlockStatement`
- across `AST_If`
2018-01-01 00:09:26 +08:00
Alex Lam S.L
da82fa59a7
fix inline on duplicate argument names ( #2698 )
2017-12-31 20:59:58 +08:00
Alex Lam S.L
333792352e
reduce hoisting declarations ( #2687 )
2017-12-31 16:15:00 +08:00
Alex Lam S.L
ed7a0a454e
fix dead_code on escaped return assignment ( #2693 )
...
fixes #2692
2017-12-30 15:20:25 +08:00
Alex Lam S.L
d819559a01
minor clean-ups ( #2686 )
2017-12-29 14:04:52 +08:00
Alex Lam S.L
b95e3338d9
fix pure_getters on AST_Binary ( #2681 )
...
fixes #2678
2017-12-28 17:01:01 +08:00
Alex Lam S.L
cb62bd98d3
fix function inlining within loops ( #2675 )
...
fixes #2663
2017-12-28 02:53:14 +08:00
Alex Lam S.L
f30790b11b
fix dead_code on return assignments ( #2668 )
...
fixes #2666
2017-12-27 07:40:34 +08:00
Alex Lam S.L
5205dbcbf4
retain recursive function names ( #2667 )
...
fixes #2665
2017-12-27 07:00:12 +08:00
Alex Lam S.L
3ff625de7e
fix bugs on substituted AST_Defun ( #2661 )
...
fixes #2660
2017-12-27 05:31:37 +08:00
Alex Lam S.L
4832bc5d88
replace single-use recursive functions ( #2659 )
...
fixes #2628
2017-12-26 21:25:35 +08:00
Alex Lam S.L
7f342cb3e3
suppress inline within substituted AST_Scope ( #2658 )
...
fixes #2657
2017-12-26 18:56:59 +08:00
Alex Lam S.L
05e7d34ed4
improve unused over duplicate variable names ( #2656 )
2017-12-26 18:29:28 +08:00
Alex Lam S.L
1476c78b53
add html-minifier to benchmarks ( #2646 )
2017-12-25 03:07:46 +08:00
Alex Lam S.L
cb6a92892f
fix infinite loop during inline ( #2645 )
...
fixes #2644
2017-12-25 01:57:11 +08:00
Alex Lam S.L
efffb81735
fix comments output & improve /*@__PURE__*/
...
- fix whitespace around comments
- fix comment parsing around parentheses
- consider parentheses when parsing `/*@__PURE__*/`
- remove all `/*@__PURE__*/` on output
fixes #2638
2017-12-24 12:38:45 +08:00
Alex Lam S.L
202f90ef8f
fix corner cases with collapse_vars, inline & reduce_vars ( #2637 )
...
fixes #2630
2017-12-24 01:24:12 +08:00
Alex Lam S.L
c07ea17c01
fix escape analysis on AST_PropAccess ( #2636 )
2017-12-24 00:36:46 +08:00
Alex Lam S.L
7ac7b0872f
remove AST hack from inline ( #2627 )
2017-12-20 17:05:53 +08:00
Alex Lam S.L
86ae5881b7
disable hoist_funs by default ( #2626 )
2017-12-20 17:05:40 +08:00
Alex Lam S.L
fac003c64f
avoid inline of function with special argument names ( #2625 )
2017-12-20 02:48:04 +08:00
Alex Lam S.L
2273655c17
fix inline after single-use reduce_vars ( #2623 )
2017-12-19 22:19:33 +08:00
Alex Lam S.L
4b334edf49
handle global constant collision with local variable after inline ( #2617 )
...
fixes #2616
2017-12-19 03:05:30 +08:00
Alex Lam S.L
8ddcbc39e6
compress apply() & call() of function ( #2613 )
...
- `fn.apply(a, [ ... ])` => `fn.call(a, ...)`
- `fn.call(a, ... )` => `a, fn(...)`
where `fn` can be `function` literal or symbol reference linked through `reduce_vars`
2017-12-18 16:23:39 +08:00
Alex Lam S.L
0b0eac1d5d
drop property assignment to constants ( #2612 )
2017-12-18 12:07:53 +08:00
Alex Lam S.L
b29fc8b27c
improve transversal efficiency in collapse_vars ( #2611 )
...
fixes #2603
2017-12-18 03:00:05 +08:00
Alex Lam S.L
7918a50d52
improve reset_opt_flags() ( #2610 )
2017-12-17 23:01:08 +08:00
Alex Lam S.L
21794c9b8d
account for catch variable when inline ( #2605 )
...
fixes #2604
2017-12-16 15:21:09 +08:00
Alex Lam S.L
6c686ce593
fix nested inline ( #2602 )
...
fixes #2601
2017-12-16 02:16:35 +08:00
Alex Lam S.L
db902af4c6
fix escape analysis on || and && ( #2600 )
...
fixes #2598
2017-12-15 19:48:14 +08:00
Alex Lam S.L
7d6907cb99
fix dead_code on nested try ( #2599 )
...
fixes #2597
2017-12-15 19:41:28 +08:00
Alex Lam S.L
092d9affb8
fix reduce_vars on do...while ( #2596 )
2017-12-15 16:33:19 +08:00
Alex Lam S.L
8f681b1d17
handle inline of function arguments ( #2590 )
...
fixes #2476
2017-12-15 13:28:30 +08:00
Alex Lam S.L
90313875f7
inline single-use function across loop ( #2594 )
2017-12-14 19:24:54 +08:00
Alex Lam S.L
3f18a61532
fix reduce_vars on single AST_Defun reference across loop ( #2593 )
2017-12-14 18:47:05 +08:00
Alex Lam S.L
02a6ce07eb
improve reduce_vars ( #2592 )
...
- account for hoisting nature of `var`
2017-12-14 15:32:13 +08:00
Alex Lam S.L
738fd52bc4
improve collapse_vars ( #2591 )
...
- handle single-use assignments other than `AST_VarDef`
- scan `AST_Call` for candidates
2017-12-14 15:31:35 +08:00
Alex Lam S.L
8266993c6e
fix dead_code on return/throw within try ( #2588 )
2017-12-14 04:38:21 +08:00
Alex Lam S.L
9a137e8613
drop local assign-only variable in return ( #2587 )
2017-12-14 02:59:59 +08:00
Alex Lam S.L
ef618332ea
fold cascade functionality into collapse_vars ( #2586 )
2017-12-14 01:20:36 +08:00
Alex Lam S.L
7f418978c9
recover lost opportunities from #2574 ( #2584 )
2017-12-13 18:20:53 +08:00
Alex Lam S.L
04cc395c35
improve collapse_vars on side-effect-free replacements ( #2583 )
2017-12-13 04:52:54 +08:00
Alex Lam S.L
e008dc1bde
minor clean-up for IIFE ( #2582 )
...
- faster exact type match
- aggressively convert to `!`
2017-12-13 01:27:26 +08:00
Alex Lam S.L
ebfd5c5c74
fix AST_VarDef.may_throw() ( #2580 )
2017-12-12 03:30:25 +08:00
Alex Lam S.L
f2ad542679
fix collapse_vars on switch ( #2578 )
2017-12-11 18:11:09 +08:00
Alex Lam S.L
0e16d92786
handle exceptional flow correctly in collapse_vars ( #2574 )
...
fixes #2571
2017-12-11 00:16:02 +08:00
Alex Lam S.L
0aff037a35
improve unused on assign-only symbols ( #2568 )
2017-12-09 06:19:29 +08:00
Alex Lam S.L
74a2f53683
fix escape analysis for AST_Throw ( #2564 )
2017-12-08 02:54:37 +08:00
Alex Lam S.L
e20935c3f2
fix escape analysis for AST_Conditional & AST_Sequence ( #2563 )
...
fixes #2560
2017-12-08 01:50:38 +08:00
Alex Lam S.L
3e34f62a1c
account for side-effects in conditional call inversion ( #2562 )
...
fixes #2560
2017-12-08 01:15:31 +08:00
Alex Lam S.L
d21cb84696
eliminate noop calls more aggressively ( #2559 )
2017-12-07 01:22:08 +08:00
Alex Lam S.L
3dd495ecdd
improve if_return ( #2558 )
...
`return void x()` => `x()`
2017-12-07 01:01:52 +08:00
Alex Lam S.L
77332a0315
fix dead_code on for ( #2552 )
2017-12-02 15:46:05 +08:00
Alex Lam S.L
8da3754e51
improve evaluate on typeof ( #2550 )
...
- gated through `typeofs`
2017-12-02 02:18:33 +08:00
Alex Lam S.L
9a6b11f8e6
improve boolean compression ( #2548 )
...
fixes #2535
2017-12-01 22:41:35 +08:00
Alex Lam S.L
7ac6fdcc99
improve switch case compression ( #2547 )
2017-12-01 14:32:00 +08:00
Alex Lam S.L
f6610baaa8
improve AST_For.init & AST_Switch.expression compression ( #2546 )
2017-12-01 12:53:59 +08:00
Alex Lam S.L
09b320e8a5
convert to number under boolean context ( #2545 )
2017-12-01 12:52:36 +08:00
Alex Lam S.L
5a1e99d713
improve compression of if conditions ( #2544 )
2017-12-01 06:18:31 +08:00
Alex Lam S.L
b762f2d6f4
improve compression of loop conditions ( #2543 )
2017-12-01 05:52:33 +08:00
Alex Lam S.L
172079a47f
improve code reuse ( #2542 )
2017-12-01 03:40:46 +08:00
Alex Lam S.L
c58d3936a3
fix corner case in call binding ( #2541 )
2017-12-01 03:18:20 +08:00
Alex Lam S.L
bc5047c1e7
fix inline on nested substitutions ( #2533 )
...
fixes #2531
2017-11-29 13:31:41 +08:00
Alex Lam S.L
206a54a746
fix nested hoist_props substitution ( #2523 )
...
fixes #2519
2017-11-28 14:39:00 +08:00
Alex Lam S.L
32def5ebf5
improve synergy between collapse_vars & unused ( #2521 )
2017-11-28 14:02:39 +08:00
Alex Lam S.L
ecc9f6b770
drop assignment in AST_VarDef.value ( #2522 )
...
fixes #2516
2017-11-28 13:08:40 +08:00
Alex Lam S.L
c141ae6f8d
fix argument/atom collision by properties ( #2514 )
...
fixes #2513
2017-11-25 22:52:46 +08:00
Alex Lam S.L
3b28b915eb
extend escape analysis on constant expression properties ( #2509 )
...
fixes #2508
2017-11-24 14:07:39 +08:00
Alex Lam S.L
eb001dc1d9
fix argument/atom collision by collapse_vars ( #2507 )
...
fixes #2506
2017-11-24 07:26:22 +08:00
Alex Lam S.L
aa9bdf416e
make AST_Lambda.contains_this() less magical ( #2505 )
2017-11-24 07:03:37 +08:00
Alex Lam S.L
8987780db6
eliminate invalid state caching in collapse_vars ( #2502 )
...
fixes #2497
2017-11-24 04:12:37 +08:00
Alex Lam S.L
b80062c490
enable hoist_props by default ( #2492 )
2017-11-19 14:56:23 +08:00
Alex Lam S.L
ae28a24c7f
fix cross-scope inlining of AST_Functions ( #2486 )
...
fixes #2485
2017-11-16 10:04:30 +08:00
Alex Lam S.L
ebe761cad0
minor consolidations ( #2484 )
...
- unique symbol generation
- `unsafe` on `AST_Call`
2017-11-16 04:37:37 +08:00
Alex Lam S.L
49fbe9c5ac
fix replacement logic in collapse_vars ( #2475 )
2017-11-13 07:37:42 +08:00
Alex Lam S.L
2ac5086831
fix top_retain on hoist_props ( #2474 )
...
fixes #2473
2017-11-13 00:59:41 +08:00
Alex Lam S.L
c6cfa04d10
allow symbol replacement on multiple occurrences ( #2472 )
...
- all-or-nothing replacement
- avoid unmangleable names
fixes #2436
2017-11-12 22:31:47 +08:00
Alex Lam S.L
cda27b0970
extend reduce_funcs to cover cross-scope substitutions ( #2469 )
...
fixes #2468
2017-11-11 15:30:17 +08:00
Alex Lam S.L
3c74047368
implement compress option reduce_funcs ( #2466 )
...
- inline single-use function declarations as expressions when permissible
- depend on `reduce_vars`
- enabled by default
- disable for speed critical code
fixes #2464
2017-11-11 05:59:35 +08:00
Alex Lam S.L
94525d859f
fix object literal tracing in reduce_vars ( #2461 )
2017-11-10 05:47:10 +08:00
Alex Lam S.L
1127a2caf3
fix multiple nested function substitutions ( #2458 )
...
fixes #2449
2017-11-09 23:30:00 +08:00
Alex Lam S.L
246d9d4e83
remove hack in collapse_vars ( #2457 )
...
fixes #2456
2017-11-09 20:00:58 +08:00
Alex Lam S.L
4c0b0177b6
preserve function identity in reduce_vars ( #2451 )
...
fixes #2450
2017-11-08 03:28:46 +08:00
Alex Lam S.L
bbedbf4ea0
handle circular function reference gracefully ( #2446 )
...
fixes #2442
2017-11-07 02:37:23 +08:00
Alex Lam S.L
2cfb5aa7da
account for eval & with in reduce_vars ( #2441 )
...
fixes #2440
2017-11-06 16:10:57 +08:00
Alex Lam S.L
6c45101870
consolidate & enhance unused ( #2439 )
...
- defer declaration removal in `collapse_vars`
- account for `AST_SymbolFunarg` in deduplication
- private accounting for `collapse_vars`
- avoid issues with identity reference due to deep cloning
fixes #2437
2017-11-06 14:25:10 +08:00
Alex Lam S.L
2c2fd89e34
inline single-use functions that are not constant expressions ( #2434 )
...
fixes #2428
2017-11-05 22:14:11 +08:00
Alex Lam S.L
5b4b07e9a7
extend function inlining safety checks ( #2430 )
2017-11-05 06:18:45 +08:00
Alex Lam S.L
a8aa28a7a6
consolidate single-use function reduction ( #2427 )
...
fixes #2423
2017-11-05 04:27:01 +08:00
Alex Lam S.L
fe5a68f9d5
maintain call argument order in collapse_vars ( #2426 )
...
fixes #2425
2017-11-05 00:00:18 +08:00
Alex Lam S.L
c8b6f4733d
reduce this within functions ( #2421 )
...
- only replace same-scope usages
- augment `test/ufuzz.js` to test for `this`
fixes #2420
2017-11-04 00:31:37 +08:00
Alex Lam S.L
a48f87abf2
compress new function containing this ( #2417 )
2017-10-30 23:19:27 +08:00
Alex Lam S.L
8428326ea1
enhance properties ( #2412 )
...
- trim array items only if `side_effects`
- extend to non-identifier properties
2017-10-29 04:11:26 +08:00
Alex Lam S.L
31f8209193
remove dead code ( #2405 )
2017-10-27 14:28:09 +08:00
Alex Lam S.L
9b0f86f5a1
fix reduce_vars on AST_Array.length ( #2404 )
2017-10-27 02:33:37 +08:00
Alex Lam S.L
ee082ace1b
compress self comparisons ( #2398 )
2017-10-26 01:16:12 +08:00
Alex Lam S.L
4178289c38
implement hoist_props ( #2396 )
...
fixes #2377
2017-10-25 03:38:11 +08:00
Alex Lam S.L
74ae16f9f8
fix unsafe reduce_vars on arrays & objects ( #2397 )
2017-10-24 22:10:36 +08:00
Alex Lam S.L
86ea38a259
enhance unsafe evaluate of arrays & objects ( #2394 )
2017-10-24 02:58:30 +08:00
Alex Lam S.L
8a713e449f
deduplicate declarations regardless of toplevel ( #2393 )
2017-10-23 01:00:50 +08:00
Alex Lam S.L
24aa07855b
safer properties transform ( #2391 )
...
`{ a: x, b: y }.a` => `[ x, y ][0]`
- `x` cannot be function containing `this`
`[ x, y, z ][1]` => `(x, z, y)`
- only if `z` is side-effect-free
2017-10-22 20:10:13 +08:00
Alex Lam S.L
5fd723f143
fix unsafe expansion of object literals ( #2390 )
2017-10-22 15:00:36 +08:00
Alex Lam S.L
516eaef50c
fix unsafe evaluation of AST_Sub ( #2389 )
2017-10-22 13:14:15 +08:00
Alex Lam S.L
4ae1fb3ed8
fix unsafe evaluation of objects ( #2388 )
2017-10-22 04:19:40 +08:00
Alex Lam S.L
011123223b
fix unsafe escape analysis in reduce_vars ( #2387 )
2017-10-22 03:23:31 +08:00
Alex Lam S.L
c927cea632
unsafe fix-ups for #2351 ( #2379 )
2017-10-21 04:08:26 +08:00
Alex Lam S.L
0f2ef3367c
enhance collapse_vars around lazy operations ( #2369 )
2017-10-19 04:52:00 +08:00
Alex Lam S.L
7e5b5cac97
fix AST_PropAccess in collapse_vars (take 3) ( #2375 )
...
Suppress scanning beyond assignment to `a.b`
2017-10-18 02:54:51 +08:00
Alex Lam S.L
c1346e06b7
clean up lazy operator detection ( #2373 )
2017-10-17 23:25:45 +08:00
Alex Lam S.L
0d2fe8e3ef
fix AST_PropAccess in collapse_vars (take 2) ( #2372 )
...
fixes #2364
2017-10-17 22:59:15 +08:00
Alex Lam S.L
f2b9c11e2a
fix AST_PropAccess in collapse_vars ( #2370 )
...
fixes #2364
2017-10-17 18:33:03 +08:00
Alex Lam S.L
fe647b083e
account for side-effects from AST_This in collapse_vars ( #2365 )
2017-10-17 01:18:55 +08:00
Alex Lam S.L
b810e2f8da
perform reduce_vars on safe literals ( #2351 )
...
- constant expression
- single reference
- same scope
- not across loop body
2017-10-09 12:25:06 +08:00
Alex Lam S.L
1abe14296e
collapse a.b whenever safe ( #2350 )
2017-10-08 13:17:48 +08:00
Alex Lam S.L
dd71639264
enhance reduce_vars for AST_Accessor ( #2339 )
...
fixes #2336
2017-10-01 03:01:50 +08:00
Alex Lam S.L
00f509405b
suppress collapse_vars of this into "use strict" ( #2326 )
...
fixes #2319
2017-09-20 05:23:20 +08:00
Alex Lam S.L
4f0953f7e9
handle LHS side-effects on cascade & collapse_vars ( #2314 )
...
fixes #2313
2017-09-16 11:45:19 +08:00
Mateusz Burzyński
8158b1bdcf
Testing all leading comments against being PURE comments ( #2305 )
2017-09-10 02:08:15 +08:00
Alex Lam S.L
aacf3edc68
extend unsafe on pure global functions ( #2303 )
2017-09-07 22:08:34 +08:00
kzc
8b89072190
add Date and other known globals to unsafe compress option ( #2302 )
2017-09-07 02:44:26 +08:00
Alex Lam S.L
395a17ccda
fix collapse_vars on default function argument ( #2299 )
...
Avoid collision with local variable `undefined` under certain corner cases.
fixes #2298
2017-09-04 02:32:33 +08:00
Alex Lam S.L
3f355866cf
correctly count declarations after hoist_vars ( #2297 )
...
fixes #2295
2017-09-03 17:23:31 +08:00
Alex Lam S.L
e5cf7972ea
fix unused patching of AST_For.init blocks ( #2289 )
...
fixes #2288
2017-08-29 01:10:04 +08:00
Alex Lam S.L
9e1da9235e
ensure ie8 works with mangled properties ( #2238 )
...
fixes #2234
2017-07-15 22:50:59 +08:00
Alex Lam S.L
a5ffe2c23f
drop unused builtin globals under unsafe ( #2236 )
...
fixes #2233
2017-07-15 15:16:11 +08:00
Alex Lam S.L
9282e7b0c6
fix unsafe evaluate of Object static methods ( #2232 )
...
fixes #2231
2017-07-14 19:52:01 +08:00
Alex Lam S.L
5229cb2b1b
drop unused compound assignments ( #2230 )
...
fixes #2226
2017-07-14 00:39:34 +08:00
Alex Lam S.L
458e3e15f0
enhance passes ( #2229 )
...
- remove hardcoded upper limit
- continue based on node count reduction
- emit verbose statistics
fixes #2226
2017-07-13 02:18:59 +08:00
Alex Lam S.L
71ee91e716
handle duplicate argument names in collapse_vars ( #2215 )
2017-07-08 04:42:35 +08:00
Alex Lam S.L
4f70d2e28c
inlining of static methods & constants ( #2211 )
...
- guard by `unsafe`
- support `Array`, `Math`, `Number`, `Object` & `String`
fixes #2207
2017-07-07 05:35:32 +08:00
Alex Lam S.L
4b6ca5e742
inline property access of object literal ( #2209 )
...
- only if property value is side-effect-free
- guard by `unsafe`
fixes #2208
2017-07-06 21:51:58 +08:00
Alex Lam S.L
9306da3c58
suppress collapse_vars of this as call argument ( #2204 )
...
fixes #2203
2017-07-06 01:03:52 +08:00
Alex Lam S.L
1ac25fc032
improve compress granularity through typeofs ( #2201 )
...
fixes #2198
2017-07-05 19:20:33 +08:00
Alex Lam S.L
5f046c724b
minor clean-ups to evaluate ( #2197 )
2017-07-03 18:52:39 +08:00
Alex Lam S.L
af0262b7e5
improve parenthesis emission ( #2196 )
...
- eliminate `throw` usages
- suppress extraneous parenthesis
- `new function() {foo.bar()}.baz`
- `for (function() { "foo" in bar; };;);`
2017-07-03 04:17:37 +08:00
Alex Lam S.L
20e4f8277f
refactor throw usage within compress ( #2193 )
...
Eliminate exceptional constructs from normal control flow.
2017-07-03 02:10:56 +08:00
Alex Lam S.L
8b69a3d18e
drop argument value after collapse_vars ( #2190 )
2017-07-02 04:28:11 +08:00
Alex Lam S.L
d40950b741
improve inline efficiency ( #2188 )
...
... by teaching `collapse_vars` some new tricks.
fixes #2187
2017-07-02 01:05:14 +08:00
Alex Lam S.L
f0a99125ee
improve unsafe_Func ( #2171 )
...
- minimise disturbance to `compute_char_frequency()`
- remove extraneous quotation marks
2017-06-27 23:53:42 +08:00
Alex Lam S.L
1e4de2e6d3
parse @global_defs as expressions ( #2169 )
...
- let parser rejects non-conformant input
- eliminate need for extraneous parenthesis
2017-06-27 10:31:19 +08:00
Alex Lam S.L
9db4c42380
fix cascade & collapse on property access of constants ( #2158 )
2017-06-24 21:30:06 +08:00
Alex Lam S.L
dc6bcaa18e
synchronise mangle.properties for minify() & test/compress ( #2151 )
2017-06-23 15:53:13 +08:00
Alex Lam S.L
d58b184835
refactor Compressor.toplevel ( #2149 )
2017-06-23 13:11:40 +08:00
Alex Lam S.L
b3a57ff019
minimise reduce_vars cloning overhead ( #2148 )
2017-06-23 06:59:53 +08:00
Alex Lam S.L
3d5bc08185
fix reduce_vars on this ( #2145 )
...
fixes #2140
2017-06-23 04:44:57 +08:00
Alex Lam S.L
0a0f4f5591
make defensive copies when inline ( #2116 )
...
fixes #2114
2017-06-17 14:32:37 +08:00
Alex Lam S.L
931daa85bf
fix loss of context in collapse_vars & cascade ( #2112 )
...
fixes #2110
2017-06-16 21:18:43 +08:00
Alex Lam S.L
00e4f7b3c1
in-place tigten_body() ( #2111 )
...
By reducing copies of `AST_Node` arrays, we should be able to reduce:
- memory pressure
- potential bugs caused by multiple references in AST
- duplicated executions of `OPT()`
2017-06-16 19:19:54 +08:00
Alex Lam S.L
11e63bc335
correctly determine scope of AST_This ( #2109 )
...
fixes #2107
2017-06-16 14:54:46 +08:00
Alex Lam S.L
33405bb24b
enforce inline scope restriction ( #2106 )
...
fixes #2105
2017-06-16 03:21:38 +08:00
Alex Lam S.L
b85a358deb
suppress inline of this ( #2103 )
...
fixes #2101
2017-06-15 12:14:16 +08:00
Alex Lam S.L
2bdc8802dd
fix variable accounting in inline ( #2085 )
...
fixes #2084
2017-06-13 01:40:14 +08:00
Alex Lam S.L
9c306406f1
fix iteration over object with inherited properties ( #2068 )
...
fixes #2055
2017-06-08 03:27:03 +08:00
Alex Lam S.L
9db0695b10
fix cascade on multi-branch evaluations ( #2067 )
...
Partially reverts #2059 as this has better coverage and performance.
fixes #2062
2017-06-07 19:52:01 +08:00
Alex Lam S.L
b9ad53d1ab
fix inline handling of AST_Call.args ( #2059 )
2017-06-06 22:55:25 +08:00
Alex Lam S.L
3493a182b2
implement function inlining ( #2053 )
...
- empty body
- single `AST_Return`
- single `AST_SimpleStatement`
- avoid `/*#__PURE__*/`
Miscellaneous
- enhance single-use function substitution
fixes #281
2017-06-06 05:49:53 +08:00
Alex Lam S.L
540220b91b
fix AST_Function scope invariance ( #2052 )
...
improve function name hack in `run_code()`
2017-06-04 19:27:43 +08:00
Alex Lam S.L
ec095ed647
whitelist unsafe evaluate candidates ( #2039 )
...
- all arguments may accept constant values
- return constant value
- free of side effects
- available & identical across locales and runtime environments
2017-06-01 04:33:05 +08:00
Alex Lam S.L
17e73121fa
enhance unsafe evaluate ( #2037 )
2017-06-01 00:56:28 +08:00
Alex Lam S.L
e9645e017f
introduce unsafe_Func ( #2033 )
...
Separate flag for #203 functionality.
2017-05-31 03:38:00 +08:00
Alex Lam S.L
1aa38051fb
better fix for #512 & #2010 ( #2019 )
...
- remove duplicated functionalities
- fix similar issue with `else`
2017-05-29 10:51:41 +08:00
Alex Lam S.L
7b13159cda
fix hoist_funs on block-scoped function under "use strict" ( #2013 )
...
Technically not part of ES5, but commonly used code exists in the wild.
2017-05-27 17:44:59 +08:00
Alex Lam S.L
95094b9c22
fix if_return on AST_Defun ( #2010 )
...
Previous fiix for #1052 perturbs declaration order of functions which leads to incorrect behaviour under "use strict".
2017-05-27 13:41:49 +08:00
Alex Lam S.L
dc33facfcb
fix dead_code on block-scoped function under "use strict" ( #2006 )
...
Technically not part of ES5, but commonly used code exists in the wild.
2017-05-26 16:08:51 +08:00
Alex Lam S.L
efdb65913b
improve usability of global_defs in minify() ( #1987 )
...
Use `@key` to `parse()` string value as `AST_Node`.
fixes #1986
2017-05-22 01:38:43 +08:00
Alex Lam S.L
58fae7dc07
enhance if_return to handle return void... ( #1977 )
...
fixes #512
2017-05-20 15:58:46 +08:00
Alex Lam S.L
eae26756f1
introduce unsafe_regexp ( #1970 )
...
fixes #1964
2017-05-19 09:06:29 +08:00
Alex Lam S.L
3ca902258c
fix bugs with getter/setter ( #1926 )
...
- `reduce_vars`
- `side_effects`
- property access for object
- `AST_SymbolAccessor` as key names
enhance `test/ufuzz.js`
- add object getter & setter
- property assignment to setter
- avoid infinite recursion in setter
- fix & adjust assignment operators
- 50% `=`
- 25% `+=`
- 2.5% each for the rest
- avoid "Invalid array length"
- fix `console.log()`
- bypass getter
- curb recursive reference
- deprecate `-E`, always report runtime errors
2017-05-14 02:10:34 +08:00
Alex Lam S.L
c391576d52
remove support for const ( #1910 )
...
As this is not part of ES5.
2017-05-12 14:57:41 +08:00
Alex Lam S.L
ac73c5d421
avoid arguments and eval in reduce_vars ( #1924 )
...
fixes #1922
2017-05-12 12:34:55 +08:00
Alex Lam S.L
1d407e761e
fix invalid transform on const ( #1919 )
...
- preserve (re)assignment to `const` for runtime error
- suppress `cascade` on `const`, as runtime behaviour is ill-defined
2017-05-12 04:51:44 +08:00
Alex Lam S.L
2c7ee956fd
fix unsafe on evaluate of reduce_vars ( #1870 )
...
Determine if variables with non-constant values can escape and be modified.
fixes #1865
2017-05-06 23:18:55 +08:00
Alex Lam S.L
ecf3563c45
kill opera ( #1869 )
2017-05-06 17:42:07 +08:00
Alex Lam S.L
dee5a27516
enhance collapse_vars ( #1862 )
...
- extend expression types
- `a++`
- `a=x;`
- extend scan range
- `for(init;;);`
- `switch(expr){case expr:}`
- `a = x; a = a || y;`
- terminate upon `debugger;`
closes #1821
fixes #27
fixes #315
fixes #1858
2017-05-06 16:15:43 +08:00
Alex Lam S.L
5a25d24b56
rename variables for better readability ( #1863 )
2017-05-02 20:47:10 +08:00
kzc
ea9289771b
improve literal return optimization ( #1860 )
2017-05-02 00:10:11 +08:00
Alex Lam S.L
2cb55b2ad0
enforce toplevel on other compress options ( #1855 )
...
Respect "funcs" and "vars" properly.
fixes #1850
2017-04-30 22:52:36 +08:00
Alex Lam S.L
9e62628171
fix unused on for-in statements ( #1843 )
...
Only need to avoid `var` within the initialisation block.
fixes #1841
2017-04-24 03:14:01 +08:00
Alex Lam S.L
45ce369480
fix AST_For.init patch-up in drop_unused() ( #1839 )
...
fixes #1838
2017-04-23 01:51:56 +08:00
Alex Lam S.L
ca32a09032
fix label-related bugs ( #1835 )
...
- deep cloning of `AST_LabeledStatement`
- `L:do{...}while(false)`
- empty statement with label within block
extend `test/ufuzz.js`
- generate labels for blocks & loops
- generate for-in statements
- skip suspicious option search if `minify()` errs
fixes #1833
2017-04-22 22:15:04 +08:00
Alex Lam S.L
f05d4f7af3
improve unused ( #1832 )
...
- extract leading value with side-effects out of `var` statement
- reduce scanning of `AST_Definitions` from 3 passes to just once
2017-04-20 13:06:14 +08:00
Alex Lam S.L
88e7a542cd
fix unused on labeled for-loop ( #1831 )
...
fixes #1830
2017-04-20 04:18:38 +08:00
Alex Lam S.L
4dcff038cb
improve collapse_vars on AST_Var ( #1828 )
...
Perform the same cascaded scanning within `var` statement as we do on array of statements.
2017-04-19 04:49:09 +08:00
Alex Lam S.L
28cfb65c47
extend cascade into a.b ( #1829 )
...
fixes #27
2017-04-19 04:17:15 +08:00
Alex Lam S.L
0f4f01b66c
clean up collapse_vars ( #1826 )
...
- remove overlap in functionality of singular, consecutive reference of constant value
- remove workarounds for previous bugs in `lib/scope.js`
- distribute recursive `collapse_single_use_vars()` calls to their respective `OPT(AST_Node)`
- enable collapsing of variables within a single `AST_Definitions`
2017-04-18 21:45:34 +08:00
Alex Lam S.L
5d9f1da3ab
support safe reassignments in reduce_vars ( #1823 )
...
`var a=1;a=2;x(a)` => `x(2)`
fix pre-existing issues
- reference counting on assignment
- walking of anonymous functions
- chained assignment
2017-04-18 13:38:42 +08:00
Alex Lam S.L
d1aa09c5c7
fix reduce_vars on conditionals ( #1822 )
2017-04-18 01:44:23 +08:00
Alex Lam S.L
6d5f341999
fix reduce_vars on boolean binary expressions ( #1819 )
...
Side effects of `&&` and `||` have not mattered until #1814 , which takes assignment expressions into account.
2017-04-17 17:24:29 +08:00
Alex Lam S.L
4ffb6fce76
compress duplicated variable definitions ( #1817 )
...
These are surprisingly common, as people reuse the same variable name within loops or switch branches.
2017-04-17 17:11:29 +08:00
Alex Lam S.L
71a8d0d236
fix reduce_vars within try-block ( #1818 )
...
Possible partial execution due to exceptions.
2017-04-17 14:03:29 +08:00
Alex Lam S.L
1a498db2d3
enhance reduce_vars ( #1814 )
...
- allow immediate assignment after declaration of variable
- relax modification rule for immutable value
- fix order of visit for TreeWalker
- remove extraneous code
2017-04-17 01:36:50 +08:00
Alex Lam S.L
44dfa5a318
fix variable substitution ( #1816 )
...
- let `collapse_vars` take care of value containing any symbols
- improve overhead accounting
2017-04-16 17:25:39 +08:00
Alex Lam S.L
ec443e422c
unify CLI & API under minify() ( #1811 )
...
- rename `screw_ie8` to `ie8`
- rename `mangle.except` to `mangle.reserved`
- rename `mangle.properties.ignore_quoted` to `mangle.properties.keep_quoted`
- compact `sourceMap` options
- more stringent verification on input `options`
- toplevel shorthands
- `ie8`
- `keep_fnames`
- `toplevel`
- `warnings`
- support arrays and unquoted string values on CLI
- drop `fromString` from `minify()`
- `minify()` no longer handles any `fs` operations
- unify order of operations for `mangle_properties()` on CLI & API
- `bin/uglifyjs` used to `mangle_properties()` before even `Compressor`
- `minify()` used to `mangle_properties()` after `Compressor` but before `mangle_names()`
- both will now do `Compressor`, `mangle_names()` then `mangle_properties()`
- `options.parse` / `--parse` for parser options beyond `bare_returns`
- add `mangle.properties.builtins` to disable built-in reserved list
- disable with `--mangle-props builtins` on CLI
- `warnings` now off by default
- add `--warn` and `--verbose` on CLI
- drop `--enclose`
- drop `--export-all`
- drop `--reserved-file`
- use `--mangle reserved` instead
- drop `--reserve-domprops`
- enabled by default, disable with `--mangle-props domprops`
- drop `--prefix`
- use `--source-map base` instead
- drop `--lint`
- remove `bin/extract-props.js`
- limit exposure of internal APIs
- update documentations
closes #96
closes #102
closes #136
closes #166
closes #243
closes #254
closes #261
closes #311
closes #700
closes #748
closes #912
closes #1072
closes #1366
fixes #101
fixes #123
fixes #124
fixes #263
fixes #379
fixes #419
fixes #423
fixes #461
fixes #465
fixes #576
fixes #737
fixes #772
fixes #958
fixes #1036
fixes #1142
fixes #1175
fixes #1220
fixes #1223
fixes #1280
fixes #1359
fixes #1368
2017-04-15 23:50:50 +08:00
Alex Lam S.L
32deb365d5
drop angular ( #1812 )
...
Remove support for `@ngInject` as there are proper alternatives anyway.
2017-04-15 05:52:29 +08:00
Alex Lam S.L
2244743545
convert AST_Seq from binary tree to array ( #1460 )
...
- rename `AST_Seq` to `AST_Sequence`
- raise default sequences_limit from 200 to 800
2017-04-12 21:56:27 +08:00
Alex Lam S.L
d6fbc365e2
fix LHS cases for NaN & friends ( #1804 )
...
`Infinity = beyond` should not become `1/0 = beyond`
2017-04-09 03:18:14 +08:00
Alex Lam S.L
0479ff0c54
fix a couple of bugs in global_defs ( #1802 )
...
- `optimize()` substituted expression
- compute nested property string correctly
fixes #1801
Miscellaneous
- reset optimisation flags on all node types
2017-04-08 16:46:25 +08:00
Alex Lam S.L
cf72fe552f
fix delete corner cases ( #1799 )
...
- assignment
- boolean
- conditional
- sequence
2017-04-08 14:25:28 +08:00
Alex Lam S.L
c2a1bceb77
fix pure_getters for chained property access ( #1798 )
2017-04-07 17:06:01 +08:00
Alex Lam S.L
e3c9c22c75
fix corner cases with delete ( #1796 )
...
`delete Infinity` returns `false` where as `delete (1/0)` returns `true`
2017-04-07 15:39:59 +08:00
Alex Lam S.L
0f4cd73dcc
introduce "strict" to pure_getters ( #1795 )
2017-04-07 13:31:58 +08:00
Alex Lam S.L
281e882d27
fix reduce_vars on catch variable ( #1794 )
...
Improved catch handling in `figure_out_scope()` means special case treatment of IE8 is no longer valid in `reset_opt_flags()`.
Also fixed recursive assignment in variable definition.
2017-04-07 12:32:56 +08:00
Alex Lam S.L
cc6aa3e5ac
fix incorrect context in variable substitution ( #1791 )
...
`AST_Node.optimize()` is context-aware, so don't cache its results to be used elsewhere.
Also fixed a few cases of AST corruption and beef up safety of `pure_getters`.
2017-04-07 03:42:17 +08:00
Alex Lam S.L
06cdb74279
improve pure_getters ( #1786 )
...
- property access to `null` & `undefined` always has side effects
- utilise `reduce_vars` to determine safe property access
- may-be cases treated as side effects unless `unsafe`
2017-04-06 11:18:59 +08:00
Alex Lam S.L
ff289b90a9
implement delayed resolution for reduce_vars ( #1788 )
...
Although it would be nice to enforce `AST_Node` cloning during transformation, that ship has sailed a long time ago.
We now get the assigned value when resolving `AST_SymbolRef` instead of `reset_opt_flags()`, which has the added advantage of improved compressor efficiency.
fixes #1787
2017-04-05 21:06:42 +08:00
Alex Lam S.L
9b6bc67c33
optimise do{...}while(false) ( #1785 )
...
- better heuristics to avoid issues like #1532
- fix `TreeWalker.loopcontrol_target()`
- `continue` cannot refer to `switch` blocks
2017-04-04 23:48:22 +08:00
Alex Lam S.L
9469c03ac9
fix corner case in switch ( #1765 )
2017-04-02 17:07:20 +08:00
Alex Lam S.L
d57527697f
avoid confusion of NaN & Infinity with catch symbol of the same name ( #1763 )
...
fixes #1760
fixes #1761
2017-04-02 16:14:09 +08:00
Alex Lam S.L
f7ca4f2297
fix corner cases in switch and undefined ( #1762 )
...
- fix side effects in switch condition for singular blocks
- fix `undefined` confusion with local variable
- gate `OPT(AST_Switch)` with `switches`
fixes #1758
fixes #1759
2017-04-02 14:52:25 +08:00
Alex Lam S.L
ee3fe0f4cd
fix switch branch elimination ( #1752 )
...
Merge unreachable case body with previous fallthrough case
fixes #1750
2017-04-01 17:19:57 +08:00
Alex Lam S.L
257ddc3bdb
improve compression of undefined, NaN & Infinitiy ( #1748 )
...
- migrate transformation logic from `OutputStream` to `Compressor`
- always turn `undefined` into `void 0` (unless `unsafe`)
- always keep `NaN` except when avoiding local variable redefinition
- introduce `keep_infinity` to suppress `1/0` transform, except when avoiding local variable redefinition
supersedes #1723
fixes #1730
2017-04-01 03:02:14 +08:00
Alex Lam S.L
1ddc05725d
combine rules for binary boolean operations ( #1744 )
2017-03-31 18:47:44 +08:00
Alex Lam S.L
a0c3836ba0
sort options in alphabetical order ( #1743 )
...
They started off as functional groups I guess, but given the sheer number of options this is becoming too difficult to read.
2017-03-31 16:41:04 +08:00
Alex Lam S.L
7cb1adf455
remove paranthesis for -(x*y) ( #1732 )
2017-03-30 16:09:00 +08:00
Alex Lam S.L
7bea38a05d
optimize try-catch-finally ( #1731 )
...
- eliminate empty blocks
- flatten out if try-block does not throw
2017-03-30 12:16:58 +08:00
Alex Lam S.L
beb9659778
speed up IIFE elimination ( #1728 )
...
- `side_effects` will clean up inner statements, so checking for an empty function body should suffice
- drop side effects when dropping `return` from statement
2017-03-29 23:27:35 +08:00
Alex Lam S.L
f1a833a7aa
speed up equivalent_to() and AST_Switch ( #1727 )
2017-03-29 22:08:26 +08:00
Alex Lam S.L
09f77c7d4d
output optimal representations of NaN & Infinity ( #1723 )
...
- move these optimisations out from `Compressor` to `OutputStream`
- fixes behaviour inconsistency when running uglified code from global or module levels due to redefinition
2017-03-29 18:31:55 +08:00
Alex Lam S.L
eb48a035e7
fix corner case in unused ( #1718 )
...
When fixing catch-related issue in #1715 , it tries to optimise for duplicate definitions but did not take anonymous functions into account.
Remove such optimisation for now and we can cover this as a more general rule later.
2017-03-29 01:00:21 +08:00
Alex Lam S.L
c909ffb715
fix unused on var of the same name within catch ( #1716 )
...
fixes #1715
2017-03-28 21:25:49 +08:00
Alex Lam S.L
f71f4905b0
fix is_number() on += ( #1714 )
...
fixes #1710
2017-03-28 17:08:16 +08:00
Alex Lam S.L
fb177a6312
drop anonymous function name when overshadowed by other declarations ( #1712 )
...
fixes #1709
2017-03-28 17:02:20 +08:00
Alex Lam S.L
67d0237f73
fix tail trimming of switch blocks ( #1707 )
...
now guarded under `dead_code`
fixes #1705
2017-03-28 03:59:13 +08:00
Alex Lam S.L
c526da59a1
has_side_effects() should take AST_Switch.expression into account (#1699 )
...
fixes #1698
2017-03-27 18:09:35 +08:00
Alex Lam S.L
581630e0a7
fix typeof side effects ( #1696 )
...
`statement_to_expression()` drops `typeof` even if it operates on undeclared variables.
Since we now have `drop_side_effect_free()`, replace and remove this deprecated functionality.
2017-03-27 04:37:42 +08:00
Alex Lam S.L
f5952933a0
preserve side effects in switch expression ( #1694 )
...
fixes #1690
2017-03-27 02:32:46 +08:00
Alex Lam S.L
f001e4cb9d
fix cascade on anonymous function reference ( #1693 )
...
Unlike normal variables and even function definitions, these cannot be reassigned, even though assignment expressions would "leak" the assigned value as normal.
2017-03-27 01:58:21 +08:00
Alex Lam S.L
57ce5bd9e0
handle overlapped variable definitions ( #1691 )
...
Process variable definitions with or without assigned values against:
- `arguments`
- named function arguments
- multiple definitions within same scope
Essentially demote variable declarations with no value assignments.
Also fixed invalid use of `AST_VarDef` over `arguments` - should use a member of `AST_SymbolDeclaration` instead.
2017-03-27 01:30:21 +08:00
Alex Lam S.L
861a79ac9f
fix delete related issues in collapse_vars and reduce_vars ( #1689 )
2017-03-26 19:14:30 +08:00
Alex Lam S.L
e76fb354eb
fix cascade on delete operator ( #1687 )
...
Conditions including strict mode would make `delete` return `true` or `false`, and are too complex to be evaluated by the compressor.
Suppress assignment folding into said operator.
fixes #1685
2017-03-26 18:08:44 +08:00
Alex Lam S.L
3276740779
fallthrough should not execute case expression ( #1683 )
...
- de-duplicate trailing cases only, avoid all potential side-effects
- enable switch statement fuzzing
fixes #1680
2017-03-26 16:52:38 +08:00
kzc
5509e51098
optimize conditional when condition symbol matches consequent ( #1684 )
2017-03-26 16:36:33 +08:00
Alex Lam S.L
94f84727ce
suppress switch branch de-duplication upon side effects ( #1682 )
...
fixes #1679
2017-03-26 13:32:43 +08:00
Alex Lam S.L
8a4f86528f
fix side-effects detection on switch statements ( #1678 )
...
extension of #1675
2017-03-26 12:05:44 +08:00
Alex Lam S.L
f83d370f57
improve switch optimisations ( #1677 )
...
- correctly determine reachability of (default) branches
- gracefully handle multiple default branches
- optimise branches with duplicate bodies
fixes #376
fixes #441
fixes #1674
2017-03-26 05:15:46 +08:00
Alex Lam S.L
b19aa58cff
fix has_side_effects() ( #1675 )
...
`AST_Try` is an `AST_Block`, so besides try block we also need to inspect catch and finally blocks for possible side effects.
Also extend this functionality to handle `AST_If` and `AST_LabeledStatement` while we are at it.
fixes #1673
2017-03-25 23:03:26 +08:00
Alex Lam S.L
0a65de89b9
fix reduce_vars on AST_Switch ( #1671 )
...
Take conditional nature of switch branches into account.
fixes #1670
2017-03-25 21:17:30 +08:00
Alex Lam S.L
6e86ee950d
fix typeof side-effects ( #1669 )
...
`has_side_effects()` does not take `typeof`'s magical power of not tripping over undeclared variable into account.
fixes #1668
2017-03-25 17:40:18 +08:00
Alex Lam S.L
8ca2401ebe
fix dead_code on AST_Switch ( #1667 )
...
Need to call `extract_declarations_from_unreachable_code()`.
fixes #1663
2017-03-25 16:21:42 +08:00
Alex Lam S.L
a30092e20f
fix invalid AST_For.init ( #1657 )
...
Turns out the only place in `Compressor` which can generate invalid `AST_For.init` is within `drop_unused()`, so focus the fix-up efforts.
supercedes #1652
fixes #1656
2017-03-25 03:18:36 +08:00
Alex Lam S.L
32283a0def
fix cascade of evaluate optimisation ( #1654 )
...
Operator has changed, so break out from rest of the rules.
fixes #1649
2017-03-24 22:09:19 +08:00
Alex Lam S.L
ac51d4c5a0
fix corner case in AST_For.init ( #1652 )
...
Enforce `null` as value for empty initialisation blocks.
fixes #1648
2017-03-24 19:31:17 +08:00
Alex Lam S.L
0432a7abb9
fix assignment extraction from conditional ( #1651 )
...
fixes #1645
fixes #1646
2017-03-24 18:52:48 +08:00
Alex Lam S.L
f3a1694a41
fix assignment substitution in sequences ( #1643 )
...
take side effects of binary boolean operations into account
fixes #1639
2017-03-24 14:30:31 +08:00
Alex Lam S.L
e918748d88
improve collapsible value detection ( #1638 )
...
- #1634 bars variables with cross-scope references in between to collapse
- but if assigned value is side-effect-free, no states can be modified, so it is safe to move
2017-03-24 02:55:32 +08:00
Alex Lam S.L
48ffbef51d
account for cross-scope modifications in collapse_vars ( #1634 )
...
mostly done by @kzc
fixes #1631
2017-03-23 07:17:34 +08:00
Alex Lam S.L
c0f3feae9f
introduce compressor.info() ( #1633 )
...
report the following only when `options.warnings = "verbose"`
- unused elements due to inlining
- collpased variables
2017-03-23 06:49:49 +08:00
Alex Lam S.L
96f8befdd7
fix commit 88fb83a ( #1622 )
...
The following is wrong:
`a == (b ? a : c)` => `b`
Because:
- `b` may not be boolean
- `a` might have side effects
- `a == a` is not always `true` (think `NaN`)
- `a == c` is not always `false`
2017-03-19 11:59:42 +08:00
Alex Lam S.L
cd58635dcc
fix AST_Binary.lift_sequences() ( #1621 )
...
Commit eab99a1c
2017-03-19 03:04:22 +08:00
Alex Lam S.L
274331d0ea
transform String.charAt() to index access ( #1620 )
...
Guarded by `unsafe` as `charAt()` can be overridden.
2017-03-19 02:17:15 +08:00
Alex Lam S.L
ac40301813
fix chained evaluation ( #1610 )
...
`reduce_vars` enables substitution of variables but did not clone the value's `AST_Node`.
This confuses `collapse_vars` and result in invalid AST and subsequent crash.
fixes #1609
2017-03-17 00:26:48 +08:00
Alex Lam S.L
5ae04b3545
make collapse_vars consistent with toplevel ( #1608 )
...
fixes #1605
2017-03-16 13:22:26 +08:00
Alex Lam S.L
a80b228d8b
fix hoist_vars on reduce_vars ( #1607 )
...
`hoist_vars` converts variable declarations into plain assignments, which then confuses `reduce_vars`
fixes #1606
2017-03-16 12:03:30 +08:00
Alex Lam S.L
cf4bf4ceb1
fix stack issues with AST_Node.evaluate() ( #1603 )
...
As patched in #1597 , `make_node_from_constant()` makes inconsistent and sometimes incorrect calls to `optimize()` and `transform()`.
Fix those issues properly by changing the semantics of `evaluate()` and `make_node_from_constant()`, with the side effect that `evaluate()` no longer eagerly converts constant to `AST_Node`.
2017-03-16 01:02:59 +08:00
Alex Lam S.L
8223b2e0db
fix AST_Node.optimize() ( #1602 )
...
Liberal use of `Compressor.transform()` and `AST_Node.optimize()` presents an issue for look-up operations like `TreeWalker.in_boolean_context()` and `TreeWalker.parent()`.
This is an incremental fix such that `AST_Node.optimize()` would now contain the correct stack information when called correctly.
2017-03-15 18:44:13 +08:00
Alex Lam S.L
381bd3836e
minor clean-ups ( #1600 )
...
- remove obsolete optimisation in `AST_Binary` after #1477
- improve `TreeWalker.has_directive()` readability and resilience against multiple visits
2017-03-14 13:19:05 +08:00
Alex Lam S.L
e3a3db73ae
temporary fix for boolean bug ( #1597 )
...
fixes #1592
2017-03-11 04:59:55 +08:00
Alex Lam S.L
d9344f30b8
disallow parameter substitution for named IIFEs ( #1596 )
...
Self-referenced function has non-fixed values assigned to its parameters.
Let `unused` & `!keep_fnames` do the scanning, then apply `reduce_vars` only to unnamed functions.
fixes #1595
2017-03-11 03:34:55 +08:00
Alex Lam S.L
b633706ce4
fix & improve function argument compression ( #1584 )
...
- one-use function call => IIFE should take `eval()` & `arguments` into account
- if unused parameter cannot be eliminated, replace it with `0`
fixes #1583
2017-03-09 19:11:05 +08:00
Alex Lam S.L
7e465d4a01
scan RHS of dropped assignments ( #1581 )
...
- similar case as #1578 but against #1450 instead
- fix `this` binding in #1450 as well
closes #1580
2017-03-09 05:22:27 +08:00
Alex Lam S.L
711f88dcb4
scan assignment value in drop_unused() ( #1578 )
...
those were not optimised for `unused` before, which made it necessary for `reduce_vars` to have separate steps for `keep_fnames`
docs update by @kzc
closes #1577
2017-03-08 18:37:32 +08:00
Alex Lam S.L
c7cdcf06a6
fix function name eliminiation ( #1576 )
...
Function expression can be assigned to a variable and be given a name. Ensure function name is the reduced variable before clearing it out.
fixes #1573
fixes #1575
2017-03-08 12:39:57 +08:00
Alex Lam S.L
bd6dee52ab
fix return from recursive IIFE ( #1570 )
...
`side-effects` did not account for IIFEs being able to reference itself thus making its return value potentially significant
2017-03-08 03:31:51 +08:00
Alex Lam S.L
8153b7bd8a
transform function calls to IIFEs ( #1560 )
...
- expose function body to call sites for potential optimisations
- suppress substitution of variable used within `AST_Defun`
2017-03-07 15:37:52 +08:00
Alex Lam S.L
d787d70127
avoid substitution of global variables ( #1557 )
...
- unless `toplevel` is enabled
- global `const` works as before
2017-03-07 03:11:03 +08:00
kzc
3ac2421932
collapse_vars: do not replace a constant in loop condition or init ( #1562 )
2017-03-07 01:42:33 +08:00
Alex Lam S.L
067e5a5762
fixup for #1553 ( #1555 )
...
- `++a` is the one that is foldable
- transform `a++` into `++a` for better optimisation
2017-03-05 17:15:37 +08:00
Alex Lam S.L
35a849dc48
collapse assignment with adjacent subsequent usage ( #1553 )
...
- consolidate `cascade` optimisations
- support ++/-- postfixes
- remove redundant optimisation identified in #1460
fixes #368
2017-03-05 14:56:14 +08:00
Alex Lam S.L
b70591be1a
handle variable declaration within catch blocks ( #1546 )
...
accounts for IE8- scoping
2017-03-05 13:13:44 +08:00
Alex Lam S.L
b33e7f88e6
improve unsafe on undefined ( #1548 )
...
`unsafe` turns undefined keyword into a variable of the same name if found, but that interferes with other related optimisations.
Keep track of such transformations to ensure zero information loss in the process.
2017-03-05 13:09:27 +08:00
Alex Lam S.L
1f0333e9f1
stay safe with constants in IE8- ( #1547 )
...
- `undefined` etc. can be redefined at top-level for IE8-, so disable related optimisations
- fixed `--support-ie8` catch mangle bug
2017-03-05 12:51:11 +08:00
Alex Lam S.L
78d1bb92d4
fix a corner case in #1530 ( #1552 )
2017-03-05 12:12:59 +08:00
kzc
ce54c9ccee
disallow collapse_vars constant replacement in for-in statements ( #1543 )
2017-03-04 02:39:54 +08:00
Alex Lam S.L
07accd2fbb
process code with implicit return statement ( #1522 )
...
Bookmarklet for instance implicitedly assumes a "completion value" without using `return`.
The `expression` option now supports such use cases.
Optimisations on IIFEs also enhanced.
fixes #354
fixes #543
fixes #625
fixes #628
fixes #640
closes #1293
2017-03-03 18:13:07 +08:00
Alex Lam S.L
18059cc94f
compress numerical expressions ( #1513 )
...
safe operations
- `a === b` => `a == b`
- `a + -b` => `a - b`
- `-a + b` => `b - a`
- `a+ +b` => `+b+a`
associative operations
(bit-wise operations are safe, otherwise `unsafe_math`)
- `a + (b + c)` => `(a + b) + c`
- `(n + 2) + 3` => `5 + n`
- `(2 * n) * 3` => `6 * n`
- `(a | 1) | (2 | d)` => `(3 | a) | b`
fixes #412
2017-03-03 18:04:32 +08:00
Alex Lam S.L
b5e0e8c203
facilitate fix for #1531 ( #1542 )
2017-03-03 07:12:24 +08:00
Alex Lam S.L
17b81350d4
fix chained assignment with unused ( #1540 )
...
When #1450 optimises `a=b=42`, it stops after the first variable even if both are unused.
fixes #1539
2017-03-03 04:45:20 +08:00
kzc
4d63d4f5b3
collapse_vars should not replace constant in for-in init section ( #1538 )
...
fixes #1537
2017-03-03 03:51:15 +08:00
Alex Lam S.L
70d72ad806
properly cover all cases of for-in loop variables ( #1536 )
2017-03-03 02:39:57 +08:00
Alex Lam S.L
fe9227a41b
fix reference marking in for-in loops ( #1535 )
...
fixes #1533
2017-03-03 00:56:06 +08:00
Alex Lam S.L
b49e142a26
disable do{...}while(false) optimisation ( #1534 )
...
- fails to handle `break` in body
fixes #1532
2017-03-03 00:54:41 +08:00
kzc
ee3b39b909
optimize trivial IIFEs returning constants ( #1530 )
2017-03-02 15:11:40 +08:00
Alex Lam S.L
9699ffb1af
trim unused invocation parameters ( #1526 )
2017-03-02 11:33:59 +08:00
Alex Lam S.L
fdc9b9413b
minor improvement to string optimisation ( #1514 )
...
- "" + "a" => "a"
- "" + a + "b" => a + "b"
- "a" + "" => "a" (improving on #45 )
2017-03-02 11:31:39 +08:00
Alex Lam S.L
7aa69117e1
fix corner cases in reduce_vars ( #1524 )
...
Avoid variable substitution in the following cases:
- use of variable before declaration
- declaration within conditional code blocks
- declaration within loop body
fixes #1518
fixes #1525
2017-03-02 00:20:53 +08:00
Alex Lam S.L
c2334baa48
fix crash on missing props to string_template() ( #1523 )
...
Patched up `make_node()` without `orig`.
There may be other cases where `start` could be missing, so make it print "undefined" instead of crashing.
fixes #1518
2017-03-01 15:25:26 +08:00
Alex Lam S.L
f5cbe19b75
invert reduce_vars tracking flag ( #1519 )
...
Modules like webpack and grunt-contrib-uglify still uses `ast.transform(compressor)` before `Compressor.compress(ast)` was introduced.
Workaround this compatibility issue by deactivating `reduce_vars` in such case.
Also fix use case with omitted `options` when calling `Compressor()`.
fixes #1516
2017-03-01 04:12:10 +08:00
Alex Lam S.L
b34fa11a13
fix evaluate on object getter & setter ( #1515 )
2017-03-01 02:03:47 +08:00
Alex Lam S.L
4365a51237
temporarily disables reduce_vars ( #1517 )
...
... as we investigate #1516
2017-03-01 00:25:43 +08:00
Alex Lam S.L
858e6c78a4
warn & drop #__PURE__ iff IIFE is dropped ( #1511 )
...
- consolidate `side-effects` optimisations
- improve string `+` optimisation
- enhance literal & `conditionals` optimisations
2017-02-28 02:25:44 +08:00
Alex Lam S.L
13be50a4a9
faster tree transversal ( #1462 )
...
- convert `[].forEach()` to for-loops
2017-02-26 05:58:26 +08:00
Alex Lam S.L
16cd5d57a5
consolidate evaluate & reduce_vars ( #1505 )
...
- improve marking efficiency
- apply smarter `const` replacement to `var`
fixes #1501
2017-02-26 00:40:33 +08:00
alexlamsl
4e49302916
enable collapse_vars & reduce_vars by default
...
- fix corner cases in `const` optimisation
- deprecate `/*@const*/`
fixes #1497
closes #1498
2017-02-24 01:46:57 +08:00
kzc
1e51586996
Support marking a call as pure
...
A function call or IIFE with an immediately preceding comment
containing `@__PURE__` or `#__PURE__` is deemed to be a
side-effect-free pure function call and can potentially be
dropped.
Depends on `side_effects` option.
`[#@]__PURE__` hint will be removed from comment when pure
call is dropped.
fixes #1261
closes #1448
2017-02-21 14:24:18 +08:00
alexlamsl
26fbeece1c
fix pure_funcs & improve side_effects
...
- only drops side-effect-free arguments
- drop side-effect-free parts with discarded value from `AST_Seq` & `AST_SimpleStatement`
closes #1494
2017-02-21 13:31:59 +08:00
alexlamsl
ec64acd2c8
introduce unsafe_proto
...
- `Array.prototype.slice` => `[].slice`
closes #1491
2017-02-21 13:29:58 +08:00
alexlamsl
e275148998
enhance global_defs
...
- support arrays, objects & AST_Node
- support `"a.b":1` on both cli & API
- emit warning if variable is modified
- override top-level variables
fixes #1416
closes #1198
closes #1469
2017-02-21 13:29:58 +08:00
alexlamsl
974247c8c0
evaluate AST_SymbolRef as parameter
...
fix invalid boolean conversion now exposed in `make_node_from_constant()`
closes #1477
2017-02-21 13:29:58 +08:00
alexlamsl
a0f4fd390a
improve reduce_vars and fix a bug
...
- update modified flag between compress() passes
- support IIFE arguments
- fix corner case with multiple definitions
closes #1473
2017-02-21 13:29:58 +08:00
alexlamsl
b8b133d91a
improve keep_fargs & keep_fnames
...
- utilise in_use_ids instead of unreferenced()
- drop_unused now up-to-date for subsequent passes
closes #1476
2017-02-21 13:29:58 +08:00
kzc
6ffbecb72b
smarter const replacement taking name length into account
...
closes #1459
2017-02-21 13:29:58 +08:00
alexlamsl
f0ff6189be
clean up negate_iife
...
- remove extra tree scanning phase for `negate_iife`
- `negate_iife` now only deals with the narrowest form, i.e. IIFE sitting directly under `AST_SimpleStatement`
- `booleans`, `conditionals` etc. will now take care the rest via more accurate accounting
- `a(); void b();` => `a(); b();`
fixes #1288
closes #1451
2017-02-21 13:29:58 +08:00
alexlamsl
6b3c49e458
improve string concatenation
...
shuffle associative operations to minimise parentheses and aid other uglification efforts
closes #1454
2017-02-21 13:29:57 +08:00
alexlamsl
f584ca8d07
-c sequences=N suboptimal at N expression cutoff
...
N = 2:
a;
b;
c;
d;
was:
a, b;
c;
d;
now:
a, b;
c, d;
fixes #1455
closes #1457
2017-02-21 13:29:57 +08:00
alexlamsl
ae4db00991
tweak do-while loops
...
- `do{...}while(false)` => `{...}`
- clean up `AST_While` logic
closes #1452
2017-02-21 13:29:57 +08:00
alexlamsl
100307ab31
fixes & improvements to [].join()
...
fixes
- [a].join() => "" + a
- ["a", , "b"].join() => "a,,b"
- ["a", null, "b"].join() => "a,,b"
- ["a", undefined, "b"].join() => "a,,b"
improvements
- ["a", "b"].join(null) => "anullb"
- ["a", "b"].join(undefined) => "a,b"
- [a + "b", c].join("") => a + "b" + c
closes #1453
2017-02-21 13:29:57 +08:00
alexlamsl
148047fbbf
drop unused: toplevel, assign-only
...
- assign statement does not count towards variable usage by default
- only works with assignments on the same scope level as declaration
- can be disabled with `unused` set to "keep_assign"
- `toplevel` to drop unused top-level variables and/or functions
- `top_retain` to whitelist top-level exceptions
closes #1450
2017-02-21 13:29:57 +08:00
kzc
d11dca3cf9
fix stray else in compress with conditionals=false
...
closes #1449
2017-02-21 13:29:57 +08:00
alexlamsl
e5badb9541
enable typeof "undefined" for general use
...
move out of unsafe, guard corner case with screw_id8 instead
closes #1446
2017-02-18 19:01:42 +08:00
alexlamsl
11676f9d72
fix crash in unsafe replacement of undefined
...
remove extraneous call to AST_SymbolRef.reference()
closes #1443
2017-02-18 18:58:23 +08:00
Anthony Van de Gejuchte
dd31d12a91
Improve optimizing function() { if(c){return foo} bar();}
...
closes #1437
2017-02-18 18:56:18 +08:00
Alex Lam S.L
0610c020b1
optimise binary operands with evaluate() ( #1427 )
...
- remove call to evaluate() in is_constant() and let nested optimize() does its job instead
- reject RegExp in is_constant() and remove special case logic under collapse_vars
- operands to conditionals optimisation are now always evaluate()-ed
- throw error in constant_value() instead of returning undefined to catch possible bugs, similar to make_node_from_constant()
- optimise binary boolean operators under `evaluate` instead of `conditionals`
2017-01-26 12:16:50 +01:00
Alex Lam S.L
0d7d4918eb
augment evaluate to extract within objects ( #1425 )
...
- gated by `unsafe`
- replaces previous optimisation specific to String.length
- "123"[0] => 1
- [1, 2, 3][0] => 1
- [1, 2, 3].length => 3
- does not apply to objects with overridden prototype functions
2017-01-26 12:14:18 +01:00
alexlamsl
48284844a4
add missing LHS cases which global_defs should avoid
2017-01-19 21:06:28 +01:00
Anthony Van de Gejuchte
79b98a9fe8
Do not overwrite options.comments + cleanup
2016-11-29 20:24:08 +01:00
kzc
fc9804b909
Fix (typeof side_effect()) in boolean context
...
Fixes #1289 with suggestion by @rvanvelzen
2016-10-06 13:50:11 +02:00
alexlamsl
4761d07e0b
Optimize unmodified variables
2016-10-01 11:36:11 +02:00
kzc
25fc02743a
Account for side effects in string + expr optimization
2016-09-01 09:24:56 -04:00
kzc
0bd8053524
implement optimization: (x = 2 * x) ---> (x *= 2)
2016-08-30 08:43:02 -04:00
Richard van Velzen
8430123e9d
Fix negate_iife transform to return a correct tree for nested IIFEs
...
Fix for #1256 , partially reverts d854523783
2016-08-17 11:55:59 +02:00
Anthony Van de Gejuchte
7eb52d2837
Keep const in own scope while compressing
...
- Fixes #1205
- Fix provided by @kzc
2016-07-15 13:20:52 +02:00
kzc
b40d5de69c
Change the default sequences limit to 200 to speed up compress.
...
Has little or no impact on minification size in the majority of
cases but can speed up rollup builds significantly.
This sequences change also has the beneficial side effect of avoiding
"stack size exceeded" errors on very large input files.
The user is free to alter the sequences limit if they are so inclined.
The previous sequences limit was 2000. 20 is often sufficient.
2016-07-01 09:41:31 +02:00
kzc
b7ef7840f3
Allow sequences maximum length to be user configurable.
2016-07-01 09:41:31 +02:00
kzc
02c638209e
Enable --screw-ie8 by default.
...
catch identifier is mangled correctly for ES5 standards-compliant JS engines by default.
Unconditionally use the ie8 if/do-while workaround whether or not --screw-ie8 is enabled.
To support non-standard ie8 javascript use: uglifyjs --support-ie8
2016-06-30 21:49:48 +02:00
kzc
335b72df03
Fix spidermonkey AST (ESTree) export and import, Array holes
...
Fixes : #1156 #1161
Also add test to exercise Uglify after spidermonkey export/import of itself.
2016-06-30 21:44:12 +02:00
kzc
ace8aaa0f4
Fix conditional expressions of form (x ? -1 : -1)
...
Fixes #1154 , #1153
2016-06-21 14:52:13 -04:00
kzc
0c003c92a8
Don't replace undefined, NaN and Infinity within with scope
2016-06-21 10:53:29 +02:00
Anthony Van de Gejuchte
d7971ba0e4
Fix test262 failures related to <, <=, in and instanceof
...
Fixed-by: @kzc
2016-06-15 23:11:08 +02:00
Anthony Van de Gejuchte
ea31da2455
Don't drop unused if scope uses with statement
...
Fix provided by @kzc
2016-06-12 14:30:28 +02:00
kzc
09d5707a8a
collapse_vars: Do not consider RegExp literals to be constants
...
Fixes #1100
2016-05-27 00:03:51 -04:00
kzc
1e390269d4
Optimize if_return for single if/return cases.
...
Fixes #1089
2016-05-24 17:54:08 +02:00
Richard van Velzen
bc49dfd27a
Completely allow evaluating -0
2016-05-24 17:50:29 +02:00
Richard van Velzen
27eedbc302
Never produce -0 when evaluating expressions (like -"")
...
Fix for #1085 . The major case was already there, but more expressions can result in -0.
2016-05-17 22:34:38 +02:00
kzc
5f464b41e2
Simplify iife new fix
...
as suggested by @rvanvelzen.
Added a test for IIFEs in nested contexts.
2016-05-15 19:12:17 -04:00
kzc
bcc1318d4b
Do not apply negate_iife optimization to new expression
2016-05-09 03:19:28 -04:00
Richard van Velzen
4fe630431c
Hoist functions when reversing if (x) return; ... vs. if (!x) ...
...
Fixes #1052
2016-04-23 23:48:33 +02:00
kzc
c55dd5ed74
Add passes compress option. Fix duplicate compress warnings.
2016-04-19 20:05:33 +02:00
Richard van Velzen
4b4528ee05
Prevent endless recursion when evaluating self-referencing consts
...
Fix #1041
2016-04-13 15:03:31 +02:00
Mihai Bazon
b5a7a231f7
Actually limit sequence length.
...
Fix #1038
2016-04-12 14:17:24 +03:00
kzc
3907a5e3b2
Fix warnings for referenced non-hoisted functions.
...
Fixes #1034
Also added `expect_warnings` functionality to test framework.
2016-04-11 18:15:20 +02:00
Mihai Bazon
9317237372
Avoid using inherited hasOwnProperty
...
Fix #1031
2016-04-07 13:16:22 +03:00
kzc
98434258d0
Optimize ternaries with boolean consequent or alternative.
...
Fixes #511
2016-04-02 17:22:12 +02:00
kzc
45ddb9caeb
Speedup unused compress option for already minified code
...
Fixes : #321 #917 #1022
2016-03-28 17:58:50 -04:00
kzc
11b0efdf84
boolean_expression ? true : false --> boolean_expression
2016-02-22 17:59:36 +01:00
kzc
5486b68850
Take operator || precendence into account for AST_If optimization.
...
Fixes #979 .
2016-02-21 12:05:02 -05:00
alexlamsl
6547437725
preserve ThisBinding for side_effects
2016-02-17 19:34:01 +01:00
Richard van Velzen
9662228f6a
Don't compress (0, eval)() to eval()
2016-02-16 19:00:48 +01:00
alexlamsl
31a9b05c96
Preserve ThisBinding in conditionals & collapse_vars
...
Fixes #973
2016-02-16 18:47:49 +01:00
kzc
7c3fee9e31
collapse_vars: avoid replacement across AST_Case nodes to be on safe side even though no issues seen.
2016-01-29 10:35:07 -05:00
kzc
929de2b0de
collapse_vars: fix if/else and ternary operator side effects
2016-01-28 12:17:06 -05:00
kzc
af2472d85e
collapse_vars: fix bug in repeated var defs of same name
2016-01-28 16:48:50 +01:00
kzc
0a38a688f9
fix bug in collapse_vars for right side of "||" and "&&"
2016-01-27 14:18:46 -05:00
kzc
f4c2ea37bf
Collapse single use var definitions
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Fix #721
2016-01-27 11:48:15 +02:00
Mihai Bazon
fe4e9f9d97
Fix hoisting the var in ForIn
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Close #913
2016-01-05 13:56:52 +02:00
kzc
774bda13cd
#873 Fix conditionals optimizations with default compress options
2015-11-24 13:27:50 -05:00
Mihai Bazon
7f48d5b33c
Fix endless loop
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Close #866
2015-11-16 12:08:24 +02:00
Mihai Bazon
b6968b6bd2
Limit max iterations for tighten_body
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Ref #866
2015-11-16 12:08:24 +02:00
Mihai Bazon
7691bebea5
Rework has_directive
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It's now available during tree walking, i.e. walker.has_directive("use
asm"), rather than as part of the scope. It's thus no longer necessary
to call `figure_out_scope` before codegen. Added special bits in the
code generator to overcome the fact that it doesn't inherit from
TreeWalker.
Fix #861
2015-11-11 22:15:25 +02:00
kzc
bd0ae6569f
return undefined optimization no longer uses return_void_0 option
2015-10-29 08:19:12 +01:00
kzc
7491d07666
optimize return undefined and return void 0
2015-10-29 08:19:12 +01:00
kzc
593677d2ff
Add proper support for "use asm"; blocks. Disable -c optimization within "use asm"; sections and preserve floating point literals in their original form. Non-asm.js sections are optimized as before. Asm.js sections can still be mangled and minified of whitespace. No special command line flags are required.
2015-10-07 10:00:28 +02:00
Ville Lautanala
5fd12451f9
Control keeping function arguments with a single option
2015-09-14 19:38:45 +02:00
Richard van Velzen
e3bd223dac
Don't change sequences that influence lexical binding in calls
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Fixes #782
2015-08-25 10:53:35 +02:00
Christopher Chedeau
3ff0b9e0c9
[Fix] --define replaces SymbolRefs in LHS of assignments
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See #208 for context
2015-08-10 11:22:36 -07:00
thorn0
252fc65558
Advanced way to specify if a function call might have side effects. #400
2015-07-29 14:36:42 +02:00
Mihai Bazon
905b601178
Don't attempt to negate non-boolean AST_Binary
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Fix #751
2015-07-22 16:55:55 +03:00
Mihai Bazon
63fb2d5a44
Merge pull request #735 from kzc/master
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optimizations for && and || where left side is constant expression
2015-07-20 09:58:01 +03:00
Mihai Bazon
85a5fc0aeb
Don't drop parens in a * (b * c). Close #744
2015-06-30 10:10:29 +03:00
kzc
f47b2b52a5
operator && and || optimization: add "else" before "if" as intended
2015-06-14 17:44:26 -04:00
kzc
fedb6191a1
optimizations for && and || where left side is constant expression
2015-06-11 23:22:38 -04:00
Mihai Bazon
a5b60217ce
Fix compressing conditionals
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Only transform foo() ? EXP(x) : EXP(y) into EXP(foo() ? x : y) if EXP has no
side effects.
Fix #710
2015-05-18 13:56:04 +03:00
Mihai Bazon
c3a10c135e
Avoid spurious brackets when dropping unused vars
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Fix #702
2015-05-04 14:49:17 +03:00
Mihai Bazon
274e1b3dc7
Drop NaN -> 0/0 transformation.
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Fix #687
2015-04-17 11:26:36 +03:00
Mihai Bazon
18c63ff3d8
Fix compression of conditionals
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Don't move the condition on the right side of an assignment when
the left side may have side effects.
Fix #677
2015-04-13 17:29:48 +03:00
Mihai Bazon
276b9a31cd
Fix compressing ![foo()]; as a statement
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need to check whether the literal has any side effects before replacing that
with `false`.
2015-03-23 23:27:00 +02:00
Mihai Bazon
5801fa39e9
[sequencesize] Actually even better:
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do create the sequence even if the stat list is bigger than 2000 statements,
but limit the sequence itself to 2000 expressions.
Ref #414
2015-03-22 13:02:45 +02:00
Mihai Bazon
f0ab1b02e6
Avoid sequencesize for more than 2000 statements.
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It hardly saves any bytes for a sequence so long, and it risks blowing the
stack with the recursive Seq functions.
Ref #414
2015-03-22 12:51:15 +02:00
Mihai Bazon
36c28e02fd
Add start/end nodes for NaN/Infinity transformations
2015-03-22 12:50:36 +02:00
Mihai Bazon
ecfd881ac6
Keep unused function arguments by default
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Discarding unused function arguments affects function.length, which can lead
to some hard to debug issues. This optimization is now done only in "unsafe
mode".
Fix #121
2015-03-20 10:28:51 +02:00
Richard van Velzen
992b6b9fcc
Fix invalid removal of left side in && and || compression
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See #637 . This does not produce the optimal result, but it does prevent the removal of non-side-effect-free code.
2015-02-11 21:08:41 +01:00
Richard van Velzen
605362f89d
Drop all console statements properly
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Because the base reference can be an member expression as well, we have to dig a bit deeper to find the leftmost base reference.
Fixes #451
2015-01-31 13:24:44 +01:00
Tal Ater
a1a4c2ada7
Optimize conditionals where the consequent and alternative are both booleans and not equivalent
2015-01-13 18:27:21 +01:00
Richard van Velzen
42ecd42ac0
Replace the correct node when replacing in void sequences
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Close #611 .
2015-01-12 17:09:34 +01:00
Mihai Bazon
a10f6a96d7
Merge pull request #482 from arty-name/inline-ng-inject
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added @ngInject support for inline functions
2015-01-11 12:10:42 +02:00
Mihai Bazon
61c233a08e
Fix make_node_from_constant for Regexp-s
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Close #588
2015-01-07 11:20:04 +02:00
Mihai Bazon
d2d716483a
aborts(AST_If) returns the if node
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Previously it returned the abort node from the alternative branch. This is
not much use as it can be different from the one in the body
branch (i.e. return vs. throw) and can trick us into issues like #591 .
Fix #591
2015-01-06 14:01:35 +02:00
Mihai Bazon
e1f0747e4c
Support keep_fnames in compressor, and --keep-fnames. #552
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Passing `--keep-fnames` will enable it both for compressor/mangler, so that
function names will not be dropped (when unused) nor mangled.
2015-01-05 11:03:13 +02:00
Richard van Velzen
f4d36a58c2
Fix #569
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When no arguments are given to `new Function()`, it should be treated as
a regular anonymous function (http://es5.github.io/#x15.3.2.1 )
2015-01-04 13:37:59 +01:00
