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This CL converts the CXFA_FMToken usages into an object instead of a
pointer. A copy constructor has been added. The line number was removed
from the token and is retrieved from the lexer where needed.
Change-Id: I94c632653e9bf1439d2ddf374a816ae0d10b5b67
Reviewed-on: https://pdfium-review.googlesource.com/27192
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
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This CL rewrites how FMLexer returns errors, instead of having a flag
that gets flipped and needs to be checked, it now returns nullptr for
NextToken() when an error occurs. The Lexer's behaviour has also been
changed to only return nullptr once an error has occurred, instead of
advancing the lexing on further calls.
FMParse now checks the returned value from the lexer instead of
testing the error flag on the parser object. For any operation that
might cause the error state of the parser to change, i.e. consuming a
token, an error check has been added. In the event this check fails
the related function returns nullptr. This will cause the parse to
short circuit and exit.
BUG=pdfium:814
Change-Id: I669012c4732c18d13009be7cd7bf1ae682950904
Reviewed-on: https://pdfium-review.googlesource.com/8950
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: (OOO Jul 28 - Aug 8) dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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This CL removes the pattern used in the lexer of passing the lexing
member variables around as args to methods. Instead it uses the fact
that they are member variables in the methods.
This CL also includes renaming of variable and function names to
remove unneeded details or make them more precise.
BUG=pdfium:814
Change-Id: Id4c592338db9ff462835314252d39ab3b4b2b2ab
Reviewed-on: https://pdfium-review.googlesource.com/8850
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
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This makes the lexer stricter on valid characters for identifiers, and
conform to the grammar in the FormCalc spec. This should remove a
class of inputs that ClusterFuzz is attempting that are breaking later
stages of the transpile.
BUG: chromium:736234, pdfium:783, pdfium:784
Change-Id: I3987d6778a82b71d768fa751035993c0af2577ee
Reviewed-on: https://pdfium-review.googlesource.com/8010
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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This Cl removes the CXFA_FMErrorInfo class. The message was never output, just
used as a flag to determine if there was an error. The class has been replaced
with a boolean.
Change-Id: I1cde99ce6957f5f8c6be0755a198d80ec8378b3a
Reviewed-on: https://pdfium-review.googlesource.com/5653
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
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Most files match the contents. The expression files are named to match
their base type even though they contain all the expression
subclasses.
Change-Id: I3b7705c7b206a9fa1afae8b677f765e8b788e84d
Reviewed-on: https://pdfium-review.googlesource.com/5492
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
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