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- use a single AST_Toplevel node for all files
- keep original source filename in the tokens
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- 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
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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).
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This fixes output for:
if (foo) {
moo: if (bar) {
break moo;
}
} else {
baz();
}
(the labeled statement must be outputted inside brackets)
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Revert "minor perf. improvements"
This reverts commit 24bfd55a22afd791d4a97694641831cfbd27fb14.
broke the parser somehow; too early to optimize, let's get the other stuff running.
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DynarchLIB (660K) now passes parsing in 440ms (about 30% slower than the
parser in UglifyJS v1).
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