v2: Use AM_V_GEN to silence generated code rules. Add BUILT_SOURCES to CLEANFILES
v3:
- Fix an accidental // in a path
- Use automake make rules for lex/yacc rather than writing our own
- Update .gitignore appropriately
- Build a libglcpp convenience library rather than awkwardly including
the files in libglsl and delegating the generation
- Remove libglsl.a compatibility link on clean
v4:
- Automake's rules for lex/yacc make .cc if source is .ll or .yy, and apparently we
must use those extensions "because of scons", so update everywhere glsl_parser.cpp
-> glsl_parser.cc and glsl_lexer.cpp -> glsl_lexer.cc. This fixes 'make tarballs'
and building with dricore enabled.
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Eric Anholt <eric@anholt.net>
Tested-by: Matt Turner <mattst88@gmail.com>
The most recent commit adds support for comments and macro expansion
on #line directives. Add testing to verify the new features.
Signed-off-by: Carl Worth <cworth@cworth.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The GLSL specification requires that #line directives be interpreted
after macro expansion. Our existing implementation of #line macros in
the lexer prevents conformance on this point.
Moving the handling of #line from the lexer to the parser gives us the
macro expansion we need. An additional benefit is that the
preprocessor also now supports comments on the same line as #line
directives.
Finally, the preprocessor now emits the (fully-macro-expanded) #line
directives into the output. This allows the full GLSL compiler to also
see and interpret these directives so it can also generate correct
line numbers in error messages.
Signed-off-by: Carl Worth <cworth@cworth.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This function is currently used only in the expansion of #if lines,
but we will soon be using it more generally (for the expansion of
(_glcpp_parser_expand_and_lex_from) and some more documentation.
Signed-off-by: Carl Worth <cworth@cworth.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Commit b823b99ec0 switched from using
functions such as ralloc_asprintf and ralloc_strcat to
ralloc_asprintf_rewrite_tail. This change maintains the string's
length as a aparamter that is updated by the ralloc functions (rather
than recomputing it with strlen over and over).
However, the change failed to updated two locations (glcpp_error and
glcpp_warning), with the result that the string's length wasn't
updated by these calls. Then, subsequent calls to other
ralloc_asprintf_rewrite_tail would overwrite the text appended by
glcpp_error.
This commit fixes the two missing updates, and restores line numbers
to the output of glcpp error messages, (as noticed by a glcpp unit
test case that has been failing since the above-mentioned commit).
Signed-off-by: Carl Worth <cworth@cworth.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
A strict reading of the GLSL specification would have this be an
error, but we've received reports from users who expect the
preprocessor to interepret undefined macros as 0. This is the standard
behavior of the rpeprocessor for C, and according to these user
reports is also the behavior of other OpenGL implementations.
So here's one of those cases where we can make our users happier by
ignoring the specification. And it's hard to imagine users who really,
really want to see an error for this case.
The two affected tests cases are updated to reflect the new behavior.
Signed-off-by: Carl Worth <cworth@cworth.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
That adds support for activating the extension. It doesn't actually
*do* anything yet, of course.
Signed-off-by: Olivier Galibert <galibert@pobox.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
To avoid redundancies, this patch also removes .deps, .libs, and *.la
from .gitignore files in subdirectories.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The ralloc string appending functions were originally intended for
simple, non-hot-path uses like printing to an info log.
Cuts Unigine Tropics load time by around 20% (6 seconds).
v2: Avoid strlen() on every newline, too.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> [v1]
Acked-by: José Fonseca <jfonseca@vmware.com> [v1]
In commit 6ecee54a9a a call to
talloc_reference was replaced with a call to talloc_steal. This was in
preparation for moving to ralloc which doesn't support reference
counting.
The justification for talloc_steal within token_list_append in that
commit is that the tokens are being copied already. But the copies are
shallow, so this does not work.
Fortunately, the lifetime of these tokens is easy to understand. A
token list for "replacements" is created and stored in a hash table
when a function-like macro is defined. This list will live until the
macro is #undefed (if ever).
Meanwhile, a shallow copy of the list is created when the macro is
used and the list expanded. This copy is short-lived, so is unsuitable
as a new parent.
So we can just let the original, longer-lived owner continue to own
the underlying objects and things will work.
This fixes bug #45082:
"ralloc.c:78: get_header: Assertion `info->canary == 0x5A1106'
failed." when using a macro in GLSL
https://bugs.freedesktop.org/show_bug.cgi?id=45082
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
NOTE: This is a candidate for stable release branches.
This test cases exposes a bug as described in this bug report:
"ralloc.c:78: get_header: Assertion `info->canary == 0x5A1106'
failed." when using a macro in GLSL
https://bugs.freedesktop.org/show_bug.cgi?id=45082
Clearly, some memory is getting (incorrectly) freed on the first macro
invocation, leading to problems with the second macro invocation.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The trick here is that flex always chooses the rule that matches the most
text. So with a input text of "two:" which we want to be lexed as an
IDENTIFIER token "two" followed by an OTHER token ":" the previous OTHER
rule would match longer as a single token of "two:" which we don't want.
We prevent this by forcing the OTHER pattern to never match any
characters that appear in other constructs, (no letters, numbers, #,
_, whitespace, nor any punctuation that appear in CPP operators).
Fixes bug #44764:
GLSL preprocessor doesn't replace defines ending with ":"
https://bugs.freedesktop.org/show_bug.cgi?id=44764
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
NOTE: This is a candidate for stable release branches.
Success was (tests-passed AND valgrind-tests-passed) but this meant that
if the valgrind tests weren't run it would be considered a failure.
The logic is now (tests-passed AND (!valgrind OR valgrind-tests-passed))
which lets us return success if the valgrind tests aren't run.
Reviewed-by: Eric Anholt <eric@anholt.net>
Tested-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Matt Turner <mattst88@gmail.com>
This extension introduces a new sampler type: samplerExternalOES.
texture2D (and texture2DProj) can be used to do a texture look up in an
external texture.
Reviewed-by: Brian Paul <brianp@vmware.com>
Acked-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
As written, this test correctly raises an error for #elif being used
with an undefined macro (and not as an argument to "defined"). If the
preceding #if were '#if 1' then this diagnositc would correctly be
hidden. That allows code such as the following to not raise an error:
#ifndef MAYBE_UNDEFINED
#elif MAYBE_UNDEFINED < 5
...
#endif
So this test case is working as expected already. We add it here just
to improve test coverage.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Carl Worth <cworth@cworth.org>
The specification reserves any macro name containing two consecutive
underscores, (anywhere within the name). Previously, we only raised
this error for macro names that started with two underscores.
Fix the implementation to check for two underscores anywhere, and also
update the corresponding 086-reserved-macro-names test.
This also fixes the following two piglit tests:
spec/glsl-1.30/preprocessor/reserved/double-underscore-02.frag
spec/glsl-1.30/preprocessor/reserved/double-underscore-03.frag
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Carl Worth <cworth@cworth.org>
This is as simple as abstracting one existing block of code into a
function call and then adding a single call to that function for the
case of a non-function-like macro.
This fixes the recently-added 097-paste-with-non-function-macro test
as well as the following piglit tests:
spec/glsl-1.30/preprocessor/concat/concat-01.frag
spec/glsl-1.30/preprocessor/concat/concat-02.frag
Also, the concat-04.frag test now passes for the right reason. The
test is intended to fail the compilation, but before this commit it
was failing compilation (and hence passing the test) for the wrong
reason.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Carl Worth <cworth@cworth.org>
Apparently we never implemented this, (but we've got a GLSL 1.30 test
in piglit that is exercising this case).
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Carl Worth <cworth@cworth.org>
There was already a loop here to look for multiple token pastes, but
it was mistakenly incrementing the iterator counter after performing
one paste.
Instead, leave the loop iterator in place to coalesce as many tokens
as necessary into one.
This fixes the recently add 096-paste-twice test as well as the
following piglit test:
spec/glsl-1.30/preprocessor/concat/concat-03.frag
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Carl Worth <cworth@cworth.org>
This is something that piglit is exercising that currently fails.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Carl Worth <cworth@cworth.org>
The 095-recursive-define test case was triggering infinite recursion
with the following test case:
#define A(a, b) B(a, b)
#define C A(0, C)
C
Here's what was happening:
1. "C" was pushed onto the active list to expand the C node
2. While expanding the "0" argument, the active list would be
emptied by the code at the end of _glcpp_parser_expand_token_list
3. When expanding the "C" argument, the active list was now empty,
so lather, rinse, repeat.
We fix this by adjusting the final popping at the end of
_glcpp_parser_expand_token_list to never pop more nodes then this
particular invocation had pushed itself. This is as simple as saving
the original state of the active list, and then interrupting the
popping when we reach this same state.
With this fix, all of the glcpp-test tests now pass.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32835
Signed-off-by: Carl Worth <cworth@cworth.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-and-tested-by: Kenneth Graunke <kenneth@whitecape.org>
It's clear enough that the current segmentation fault isn't what we
want. And it's also very easy to know what we do want here, (just
check with any functional C preprocessor such as "gcc -E").
Add the desired output as an expected file so that the test suite
gives useful output, (showing the omitted output and the segfault),
rather than just reporting "No such file" for the expected file.
These were all written as generic list functions, (accepting and returning
a list to act upon). But they were only ever used with parser->active as
the list. By simply accepting the parser itself, these functions can update
parser->active and now return nothing at all. This makes the code a bit
more compact.
And hopefully the code is no less readable since the functions are also
now renamed to have "_parser_active" in the name for better correlation
with nearby tests of the parser->active field.
The common case for this test suite is to quickly test that everything
returns the correct results. In this case, the second run of the test
suite under valgrind was just annoying, (and the user would often
interrupt it).
Now, do what is wanted in the common case by default (just run the
test suite), and require a run with "glcpp-test --valgrind" in order
to test with valgrind.
The expected file here captures the current behavior of glcpp (which
is to generate an obscure "syntax error, unexpected $end" diagnostic
for this case).
It would certainly be better for glcpp to generate a nicer diagnostic,
(such as "missing closing parenthesis in function-like macro
definition" or so), but the current behavior is at least correct, and
expected. So we can make the test suite more useful by marking the
current behavior as expected.
The expected file here captures the current behavior of glcpp (which
is to generate a division-by-zero error) for this case.
It's easy to argue that it should be short-circuiting the evaluation
and not generating the diagnostic (which happens to be what gcc does).
But it doesn't seem like we should force this behavior on our
pre-processor, (and, as always, the GLSL specification of the
pre-processor is too vague on this point).
This test is behaving just fine already---it's generating an informative
diagnostic, ("error: division by 0 in preprocessor directive"), so adding
this in the expected file makes things pass.
Previously, the rule deleted by this commit was matched every single
time (being the longest match). If not skipping, it used REJECT to
continue on to the actual correct rule.
The flex manual advises against using REJECT where possible, as it is
one of the most expensive lexer features. So using it on every match
seems undesirable. Perhaps more importantly, it made it necessary for
the #if directive rules to contain a look-ahead pattern to make them
as long as the (now deleted) "skip the whole line" rule.
This patch introduces an exclusive start state, SKIP, to avoid REJECTs.
Each time the lexer is called, the code at the top of the rules section
will run, implicitly switching the state to the correct one.
Fixes piglit tests 16384-consecutive-chars.frag and
16385-consecutive-chars.frag.
The expected result has been out of sync with what glcpp produces for
some time; glcpp's actual result seems to be correct and is very close to
GCC's cpp. Updating this will make it easier to catch regressions in
upcoming commits.
For example, this now raises an error:
#define XXX 1 / 0
Fixes bug: https://bugs.freedesktop.org//show_bug.cgi?id=33507
Fixes Piglit test: spec/glsl-1.10/preprocessor/modulus-by-zero.vert
NOTE: This is a candidate for the 7.9 and 7.10 branches.
