The `console.log` statement in evaluator_spec.js is obviously not needed. In obj.js it could have been replaced by `info`, but that seemed unnecessary given the already existing `error`.
I have a large PDF where this function is called 1.6 million times
during loading. Minimizing the string concatenations reduces the
cumulative allocations done by Firefox within this function from 113 MB
to 48 MB.
In src/core/obj.js, we convert a Ref to a string to index into a table like
this: 'R1.0'. This conversion is repeated numerous times.
This patch factors out the conversion into a new function.
Ref.prototype.toString().
The function `assertWllFormed` was doing nothing different than `assert` which is
available in the same namespace. Removing it will lighten the filesize - albeit
very slightly - and reduce complexity.
Different fonts can point to the same font descriptor
(see https://github.com/mozilla/pdf.js/issues/4339 for details). With this
commit such fonts are treated as aliases if they have also the same encoding
and the same toUnicode map. The according info is stored on the font descriptor.
This change must also ensure that aliases use always the same font name
because translated fonts can get cleared depending on the CLEANUP_TIMEOUT setting.
- remove unused "if (e instanceof Stream)" in XRef_fetch
- split XRef_fetch into XRef_fetchUncompressed and XRef_fetchCompressed
This explains the actual code flow better
- add line breaks after functions
- change the document to conform to current StyleGuide
