Commit graph

209 commits

Author SHA1 Message Date
George Marques
c7459e3855
GDScript: Use analyzer data to decide assignment conversion
Since there might be tricky cases in the analyzer (in the case of unsafe
lines) which would need to be properly checked again. Instead, this
splits the code generator in two functions and use information set by
the analyzer to tell which function to use, without a need to re-check.
2021-05-26 14:09:00 -03:00
jfons
f8e34209af Fix some warnings raised by GCC-11.1 2021-05-25 17:23:53 +02:00
George Marques
cdb3726fe6
Merge pull request #48347 from Blackiris/fix-temporary-key-not-released
GDScript: Fix temporary value not released when used as a dictionary key
2021-05-17 18:50:25 -03:00
George Marques
ec783dd885
GDScript: Add support for builtin static method calls 2021-05-16 11:54:33 -03:00
Julien Nguyen
82522662f8 Fix temporary value not released when used as a dictionary key 2021-05-06 22:13:05 +02:00
George Marques
c201b212c7
GDScript: Implement lambdas compilation and runtime 2021-04-28 11:09:38 -03:00
George Marques
1e4ff2ede6
GDScript: Make sure Lua-style dicts use StringName as keys 2021-04-23 16:00:23 -03:00
George Marques
c7511de02e
GDScript: Fix resolution of dictionary keys
There was a mixup between String and StringName keys. Now they're
clearly separated. This also means you have to consider which type
you're using for the dictionary keys and how you are accessing them.
2021-04-23 15:42:33 -03:00
George Marques
40502a1689
GDScript: Pool temporary values by type on the stack
So the stack slots perform less type changes, which is useful for
future optimizations.
2021-04-14 14:35:51 -03:00
George Marques
cf4079cb5f
Reduce number of addressing modes in GDScript VM
There's now only 3 addressing modes: stack, constant, and member.

Self, class, and nil are now present respectively in the first 3 stack
slots. Global and class constants are moved to local constants when
compiling. Named globals is only present on editor to use on tool
singletons, so its use now emits a new instruction to copy the global to
the stack.

This allow us to further optimize the VM later by embedding the
addressing modes in the instructions themselves, which is better done
with less permutations.
2021-04-08 14:29:55 -03:00
Julien Nguyen
43c1c680f0 Fix stack overflow in setter 2021-04-06 19:00:08 +02:00
Julien Nguyen
3168c2a513 Fix GDScript variables addresses getting mixed 2021-04-04 19:03:15 +02:00
George Marques
160c260495
GDScript: Allow export of enum variables
Also fix the enum type in variables to be integer.
2021-03-30 08:29:38 -03:00
George Marques
85e316a5d5
Add typed arrays to GDScript
- Use `Array[type]` for type-hints. e.g.:
  `var array: Array[int] = [1, 2, 3]`
- Array literals are typed if their storage is typed (variable
  asssignment of as argument in function all). Otherwise they are
  untyped.
2021-03-29 10:45:48 -03:00
Rémi Verschelde
6edb0a75ab
Merge pull request #46936 from DavidSichma/match_temp_header
Fixed match test expression for temporaries
2021-03-14 15:46:53 +01:00
David Sichma
762bb5843b
Fixed match test expression for temporaries
Fixed that a potentially popped temporary was used for the value in
match statements.
2021-03-12 15:04:45 +01:00
Anshul7sp1
91181c2086 Fixes small typos and grammar correction 2021-03-12 19:05:16 +05:30
David Sichma
66a5002750
Fixed match for expression pattern
equality comparison now writes to right target address
2021-03-02 19:18:29 +01:00
Thakee Nathees
9869522e6a false positive "Identifier not found" error or signals fixed 2021-02-24 19:34:01 +05:30
Rémi Verschelde
c17413f159
Merge pull request #44104 from nekomatata/coroutine-await-fix
Fix error when calling coroutine with await in _ready
2021-01-11 13:54:04 +01:00
Rémi Verschelde
b5334d14f7
Update copyright statements to 2021
Happy new year to the wonderful Godot community!

2020 has been a tough year for most of us personally, but a good year for
Godot development nonetheless with a huge amount of work done towards Godot
4.0 and great improvements backported to the long-lived 3.2 branch.

We've had close to 400 contributors to engine code this year, authoring near
7,000 commit! (And that's only for the `master` branch and for the engine code,
there's a lot more when counting docs, demos and other first-party repos.)

Here's to a great year 2021 for all Godot users 🎆
2021-01-01 20:19:21 +01:00
Marcel Admiraal
5b937d493f Rename empty() to is_empty() 2020-12-28 10:39:56 +00:00
PouleyKetchoupp
2e4ee06b7a Fix error when calling coroutine with await in _ready
The code paths for calling async functions seemed to be missing in some
cases, causing a debug break and false positive error.
2020-12-17 09:01:39 -07:00
Rémi Verschelde
abfc528439
Merge pull request #43890 from vnen/gdscript-builtin-functions-refactor
GDScript: Refactor builtin functions
2020-12-15 20:51:38 +01:00
PouleyKetchoupp
87d73faa66 Fix base script not initialized properly in some cases
Storing script references to pointer only in result.script_type could
lead to losing the last reference, causing further conversions from
Script* to Ref<Script> to fail.

Now result.script_type_ref is always set first, and then cleared in the
specific case of the script being the owner, to avoid cyclic reference
issues.
2020-12-06 08:20:33 -07:00
Rémi Verschelde
d1231be1c8
Merge pull request #41095 from ThakeeNathees/GDScript-Documentation
GDScript(2.0) Documentation generation system
2020-12-02 14:15:38 +01:00
George Marques
0019aa940e
Merge pull request #41773 from ThakeeNathees/default-argument-override-buf-fix
GDScript default argument override bug fix
2020-12-02 09:54:47 -03:00
Thakee Nathees
42bfa16996 Refactor DocData into core and editor (DocTools) parts 2020-12-02 00:48:39 +05:30
Thakee Nathees
d0e7d9b62f Documentation generation for GDScript
- ClassDoc added to GDScript and property reflection data were extracted
from parse tree

- GDScript comments are collected from tokenizer for documentation and
applied to the ClassDoc by the GDScript compiler

- private docs were excluded (name with underscore prefix and doesn't
have any doc comments)

- default values (of non exported vars), arguments are extraced from the
parser

- Integrated with GDScript 2.0 and new enums were added.

- merge conflicts fixed
2020-11-29 19:45:36 +05:30
Thakee Nathees
d42b305377 GDScript default argument override bug fix
Fix: #41766
2020-11-28 20:42:57 +05:30
George Marques
0cb185927c
GDScript: Improve handling of operators
- Use the new functions in Variant to determine the validity and resulting
  type of operators.
- Split the operator function in codegen between binary and unary, since
  the unary ones have now a special requirement of having the second
  argument to be the NIL type when requesting info.
2020-11-26 14:41:55 -03:00
George Marques
c7b6a7adcc
GDScript: Refactor builtin functions
They are now called "utility functions" to avoid confusion with methods
of builtin types, and be consistent with the naming in Variant.

Core utility functions are now available in GDScript. The ones missing
in core are added specifically to GDScript as helpers for convenience.

Some functions were remove when there are better ways to do, reducing
redundancy and cleaning up the global scope.
2020-11-26 12:05:42 -03:00
Rémi Verschelde
fc28de64c4
Merge pull request #43856 from vnen/gdscript-some-fixes
A couple of GDScript fixes
2020-11-25 17:13:41 +01:00
George Marques
ed3d8f31df
GDScript: Fix return of cast expression on compilation
It was mistakenly returning the source instead of the result.
2020-11-25 11:37:51 -03:00
George Marques
2e528ef382
GDScript: Fix mishandling of stack pointers
- Replace the for loop temporaries by locals. They cause conflicts with
  the stack when being popped, while locals are properly handled in the
  scope.
- Change the interface for the codegen so the for loop list doesn't live
  through the whole block if it's a temporary.
- Keep track of the actual amount of local variables in the stack. Using
  the size of the map is misleading in cases where multiple locals have
  the same name (which is allowed when there's no shadowing).
- Added a few debug checks for temporaries, to avoid them being wrongly
  manipulated in the future. They should not live more than a line of
  code.
- Rearrange some of compiler code to make sure the temporaries don't
  live across blocks.
2020-11-25 11:24:13 -03:00
George Marques
52ab64db69
GDScript: Add faster call instructions for builtin methods
Methods from builtin types can be called by using the function pointer
when the argument and base types are known at compile time.
2020-11-21 13:24:50 -03:00
George Marques
d8b22097f2
GDScript: Add faster call instructions for native methods 2020-11-21 13:24:50 -03:00
George Marques
8bcd345782
GDScript: Fix native class not set with inheritance 2020-11-13 10:35:24 -03:00
Pedro J. Estébanez
95828161d4 Prevent cyclic reference between script and its members 2020-09-10 01:26:07 +02:00
bruvzg
d73609c774
Fix GDScript codegen leak. 2020-09-02 22:42:49 +03:00
George Marques
745ca3059d
Change GDScript compiler to use codegen abstraction 2020-09-01 14:36:22 -03:00
George Marques
8ccf88a206
GDScript: Fix issues when deriving from other scripts 2020-08-26 14:50:27 -03:00
George Marques
722be9aaef
GDScript: Don't fail to load constants if they're not a literal
It's still okay as long as it's a constant value. This should already
been validated by the analyzer.
2020-08-24 09:15:33 -03:00
George Marques
e6b44b93c3
GDScript: Allow "new()" to be called in non-static functions 2020-07-24 13:45:23 -03:00
George Marques
a0f54cb95e
Wrap up GDScript 2.0 base implementation 2020-07-22 11:07:51 -03:00
George Marques
aa09b4f85d
Reintroduce code completion 2020-07-20 11:38:40 -03:00
George Marques
9a76ab8b6a
Add new GDScript type checker 2020-07-20 11:38:40 -03:00
George Marques
886732ac2b
Add support for properties 2020-07-20 11:38:39 -03:00
George Marques
5d6e853806
New GDScript tokenizer and parser
Sometimes to fix something you have to break it first.

This get GDScript mostly working with the new tokenizer and parser but
a lot of things isn't working yet. It compiles and it's usable, and that
should be enough for now.

Don't worry: other huge commits will come after this.
2020-07-20 11:38:39 -03:00
Rémi Verschelde
d341181f30
Merge pull request #38067 from ThakeeNathees/elif-error-line-fixed
GDScript debugger incorrect error line fixed
2020-06-17 19:17:44 +02:00
Thakee Nathees
9325671faa GDScript debugger incorrect error line fixed
if the first line of an else or an elif throws a runtime error the
debugger shows incorrect line number.
2020-06-17 21:24:01 +05:30
Rémi Verschelde
0ee0fa42e6 Style: Enforce braces around if blocks and loops
Using clang-tidy's `readability-braces-around-statements`.
https://clang.llvm.org/extra/clang-tidy/checks/readability-braces-around-statements.html
2020-05-14 21:57:34 +02:00
Rémi Verschelde
07bc4e2f96 Style: Enforce separation line between function definitions
I couldn't find a tool that enforces it, so I went the manual route:
```
find -name "thirdparty" -prune \
  -o -name "*.cpp" -o -name "*.h" -o -name "*.m" -o -name "*.mm" \
  -o -name "*.glsl" > files
perl -0777 -pi -e 's/\n}\n([^#])/\n}\n\n\1/g' $(cat files)
misc/scripts/fix_style.sh -c
```

This adds a newline after all `}` on the first column, unless they
are followed by `#` (typically `#endif`). This leads to having lots
of places with two lines between function/class definitions, but
clang-format then fixes it as we enforce max one line of separation.

This doesn't fix potential occurrences of function definitions which
are indented (e.g. for a helper class defined in a .cpp), but it's
better than nothing. Also can't be made to run easily on CI/hooks so
we'll have to be careful with new code.

Part of #33027.
2020-05-14 16:54:55 +02:00
Rémi Verschelde
0be6d925dc Style: clang-format: Disable KeepEmptyLinesAtTheStartOfBlocks
Which means that reduz' beloved style which we all became used to
will now be changed automatically to remove the first empty line.

This makes us lean closer to 1TBS (the one true brace style) instead
of hybridating it with some Allman-inspired spacing.

There's still the case of braces around single-statement blocks that
needs to be addressed (but clang-format can't help with that, but
clang-tidy may if we agree about it).

Part of #33027.
2020-05-14 16:54:55 +02:00
Rémi Verschelde
69de7ce38c Style: clang-format: Disable AllowShortCaseLabelsOnASingleLine
Part of #33027.
2020-05-10 13:13:54 +02:00
Rémi Verschelde
e956e80c1f Style: clang-format: Disable AllowShortIfStatementsOnASingleLine
Part of #33027, also discussed in #29848.

Enforcing the use of brackets even on single line statements would be
preferred, but `clang-format` doesn't have this functionality yet.
2020-05-10 13:12:16 +02:00
lupoDharkael
95a1400a2a Replace NULL with nullptr 2020-04-02 13:38:00 +02:00
Rémi Verschelde
cb282c6ef0 Style: Set clang-format Standard to Cpp11
For us, it practically only changes the fact that `A<A<int>>` is now
used instead of the C++03 compatible `A<A<int> >`.

Note: clang-format 10+ changed the `Standard` arguments to fully
specified `c++11`, `c++14`, etc. versions, but we can't use `c++17`
now if we want to preserve compatibility with clang-format 8 and 9.
`Cpp11` is still supported as deprecated alias for `Latest`.
2020-03-17 07:36:24 +01:00
Fabio Alessandrelli
b8ddaf9c33 Refactor ScriptDebugger.
EngineDebugger is the new interface to access the debugger.
It tries to be as agnostic as possible on the data that various
subsystems can expose.

It allows 2 types of interactions:

- Profilers:
  A subsystem can register a profiler, assigning it a unique name.
  That name can be used to activate the profiler or add data to it.
  The registered profiler can be composed of up to 3 functions:
    - Toggle: called when the profiler is activated/deactivated.
    - Add: called whenever data is added to the debugger
      (via `EngineDebugger::profiler_add_frame_data`)
    - Tick: called every frame (during idle), receives frame times.

- Captures: (Only relevant in remote debugger for now)
  A subsystem can register a capture, assigning it a unique name.
  When receiving a message, the remote debugger will check if it starts
  with `[prefix]:` and call the associated capture with name `prefix`.

Port MultiplayerAPI, Servers, Scripts, Visual, Performance to the new
profiler system.

Port SceneDebugger and RemoteDebugger to the new capture system.
The LocalDebugger also uses the new profiler system for scripts
profiling.
2020-03-08 12:36:39 +01:00
Juan Linietsky
69c95f4b4c Reworked signal connection system, added support for Callable and Signal objects and made them default. 2020-02-20 08:24:50 +01:00
ChibiDenDen
86aa12e806 Keep a weak reference to orphan subclasses to reuse on class reload 2020-01-15 22:54:01 +02:00
Dani Frank
d6f10cd08e Add fully_qualified_name for GDScript class 2020-01-14 17:33:33 +02:00
George Marques
cc9ca9eb34
GDScript: Don't re-evaluate index on assigment with operation
Pass the calculated index from the stack and use the same to get and set
the value. This avoids a function with side effects being evaluated
twice when using indexing in an assignment with operation statement
(e.g. a[function()] += 1).
2020-01-09 10:43:29 -03:00
Rémi Verschelde
a7f49ac9a1 Update copyright statements to 2020
Happy new year to the wonderful Godot community!

We're starting a new decade with a well-established, non-profit, free
and open source game engine, and tons of further improvements in the
pipeline from hundreds of contributors.

Godot will keep getting better, and we're looking forward to all the
games that the community will keep developing and releasing with it.
2020-01-01 11:16:22 +01:00
George Marques
475d7f0e52
GDScript: Fix type conversion in assignment with operation 2019-12-13 12:51:08 -03:00
Rémi Verschelde
fdc2463a1b
Merge pull request #32150 from luzpaz/typos
Fix misc. source comment typos
2019-09-20 17:09:05 +02:00
luz.paz
91ecd7b6a6 Fix misc. source comment typos
Found using `codespell -q 3 -S ./thirdparty,*.po -L ang,ba,cas,dof,doubleclick,fave,hist,leapyear,lod,nd,numer,ois,paket,seeked,sinc,switchs,te,uint -D ~/Projects/codespell/codespell_lib/data/dictionary.txt `
2019-09-19 14:36:52 -04:00
Mitch Curtis
aa8e3e7b0f GDScript: add an optional message parameter to assert()
Before this patch, assert() only took the condition to assert on:

    assert(item_data)

Now, it can optionally take a string that will be printed upon failure:

    assert(item_data, item_name + " has no item data in ItemDatabase")

This makes it easier to immediately see what the issue is by being
able to write informative failure messages.

Thanks to @wiped1 for sharing their patch, upon which this is based.

Closes #17082
2019-09-11 15:37:11 +02:00
Robin Hübner
6ab118c464 Replace 'ERR_EXPLAIN' with 'ERR_FAIL_*_MSG' in "platform", "modules/gdnative", "modules/gdscript" directories. 2019-08-09 11:13:24 +02:00
qarmin
3c154eb93b Remove unnecessary code and add some error explanations 2019-07-01 12:59:42 +02:00
qarmin
4e5310cc60 Some code changed with Clang-Tidy 2019-06-26 15:08:25 +02:00
geequlim
eed5967c02 Fix GDSCript inner classes be freed after compile 2019-06-02 19:57:33 +08:00
Bojidar Marinov
f04f127680
Fix as operator generating opcode 38 errors
Closes #27489
Fixup of 466a76ac2c

Additionally, update `GDScriptCompiler` test to use Ref and to include `as` expressions.
2019-04-10 13:18:50 +03:00
Rémi Verschelde
492153878f
Merge pull request #27128 from bojidar-bg/27111-gdscript-confounding-class
Fix GDScriptCompiler bugging out with identically-named inner class
2019-03-27 16:57:04 +01:00
Bojidar Marinov
466a76ac2c
Fix GDScriptCompiler bugging out with identically-named inner class
Fixes #27111
2019-03-16 20:41:16 +02:00
Bojidar Marinov
b64f9f03f8
Fix duplicated lines in GDScript bytecode
Fixes #26789
2019-03-14 18:38:07 +02:00
marxin
8d51618949 Add -Wshadow=local to warnings and fix reported issues.
Fixes #25316.
2019-02-20 19:44:12 +01:00
Rémi Verschelde
d35003d92a GDScript: Remove unused switch, case and do CF keywords
They had been reserved for future implementation, but we now have the
`match` CF keyword which does the same and more.

According to @reduz `do` was even added by mistake when copying from
the shader language parser, it was never intended to add support for
`do`... `while` loops, as the syntax would be awkward in GDScript,
and the added sugar is not worth it.

Fixes #25787.
2019-02-20 14:05:08 +01:00
George Marques
30f02dd421 GDScript compiler: check if subclass exists before comparison
Otherwise these checks might trigger the insertion of an empty value,
leading to crashes.
2019-01-17 14:38:28 -02:00
Rémi Verschelde
b16c309f82 Update copyright statements to 2019
Happy new year to the wonderful Godot community!
2019-01-01 12:58:10 +01:00
Aaron Franke
cb01268562 Fix many errors found by PVS-Studio
Fix errors 2, 3, 4, 6, 8, 9, 11, 12, 13, 14, and 15.
2018-11-28 05:03:24 -05:00
Pedro J. Estébanez
b499537e68 Revert "Fix crash on signal/resume to dangling target"
This reverts commit 54bdc1e1f6.
2018-11-24 23:46:13 +01:00
Pedro J. Estébanez
54bdc1e1f6 Fix crash on signal/resume to dangling target
Fixes #22443.
2018-10-17 20:44:47 +02:00
George Marques
4907a1cd28
GDScript: Fix stack address test in compiler 2018-09-19 11:17:45 -03:00
luz.paz
08bde5b2de Misc. typos
Found via `codespell -q 3 -I ../godot-word-whitelist.txt --skip="./thirdparty,*.po"`
2018-09-12 21:39:17 -04:00
Rémi Verschelde
f06b7d40c8
Merge pull request #21449 from vnen/gdscript-builtin-is
Allow `is` operator to test built-in types
2018-08-27 17:48:11 +02:00
George Marques
4b974a36b7
GDScript: Allow is operator to test built-in types 2018-08-26 13:31:23 -03:00
Crazy-P
e4af39cbc0 Fixes several resource leaks in ...
- gdscript
- gdscript_compiler
- regex
- android/export
- gles3/rasterizer (scene and storage)
2018-08-26 09:19:02 +08:00
Rémi Verschelde
52466d57e9 Make some debug prints verbose-only, remove others 2018-08-24 14:59:01 +02:00
George Marques
d97624e295
GDSCript: Fix cyclic class dependency detection 2018-08-21 13:14:11 -03:00
George Marques
65c069c8d9
GDScript: Fix main script detection 2018-07-25 20:50:11 -03:00
Hein-Pieter van Braam
0e29f7974b Reduce unnecessary COW on Vector by make writing explicit
This commit makes operator[] on Vector const and adds a write proxy to it.  From
now on writes to Vectors need to happen through the .write proxy. So for
instance:

Vector<int> vec;
vec.push_back(10);
std::cout << vec[0] << std::endl;
vec.write[0] = 20;

Failing to use the .write proxy will cause a compilation error.

In addition COWable datatypes can now embed a CowData pointer to their data.
This means that String, CharString, and VMap no longer use or derive from
Vector.

_ALWAYS_INLINE_ and _FORCE_INLINE_ are now equivalent for debug and non-debug
builds. This is a lot faster for Vector in the editor and while running tests.
The reason why this difference used to exist is because force-inlined methods
used to give a bad debugging experience. After extensive testing with modern
compilers this is no longer the case.
2018-07-26 00:54:16 +02:00
George Marques
e3d72d14ff
Use type information to enable GDScript introspection
This makes the Script API provide accurate information when requesting
property or method info.
2018-07-20 21:55:17 -03:00
George Marques
4b18c4e448
Add typed instructions to GDScript
- Typed assignment (built-in, native, and script).
- Cast (built-in conversion; native and script checks).
- Check type of functions arguments on call.
- Check type of members on set.
2018-07-20 21:55:17 -03:00
George Marques
743053734f
Add static type checks in the parser
- Resolve types for all identifiers.
- Error when identifier is not found.
- Match return type and error when not returning a value when it should.
- Check unreachable code (code after sure return).
- Match argument count and types for function calls.
- Determine if return type of function call matches the assignment.
- Do static type check with match statement when possible.
- Use type hints to determine export type.
- Check compatibility between type hint and explicit export type.
2018-07-20 21:55:16 -03:00
George Marques
b7a00aead0
Move inheritance resolution to the parser 2018-07-20 21:55:16 -03:00
George Marques
8aab9a06d4
Add typing syntax 2018-07-20 21:55:16 -03:00
Rémi Verschelde
7c9f7452f4 Style: Format code with clang-format 6.0.1 2018-07-18 16:27:03 +02:00
Juan Linietsky
a3f1ee5c57 Global class names (and GDScript support for it) 2018-07-15 19:29:00 -03:00
Marcin Zawiejski
317dcb084b Fix onready vars / vars accessing class members if _ready / _init not present 2018-06-18 23:31:48 +02:00
George Marques
3cec24baa8
Fix positive operator in GDScript compiler 2018-05-23 17:43:56 -03:00
George Marques
decf178033
Enable autoload in editor
- Tool scripts will be executed and can be accessed by plugins.
- Other script languages can implement add/remove_named_global_constant
to make use of this functionality.
2018-05-01 11:44:08 -03:00
luz.paz
612ab4bbc6 Fix typos with codespell
Found via `codespell -q 3 --skip="./thirdparty,./editor/translations" -I ../godot-word-whitelist.txt`
Whitelist consists of:
```
ang
doubleclick
lod
nd
que
te
unselect
```
2018-02-21 19:46:06 +01:00
Juan Linietsky
c58891ff4c Allow shadowing class members with local variables in GDScript, closes #15896 2018-01-20 17:45:19 -03:00
Rémi Verschelde
e4213e66b2 Add missing copyright headers and fix formatting
Using `misc/scripts/fix_headers.py` on all Godot files.
Some missing header guards were added, and the header inclusion order
was fixed in the Bullet module.
2018-01-05 01:22:23 +01:00
Rémi Verschelde
b50a9114b1 Update copyright statements to 2018
Happy new year to the wonderful Godot community!
2018-01-01 14:40:47 +01:00
Rémi Verschelde
13c2ff9320 Style: Apply new clang-format 5.0 style to all files 2017-12-07 08:02:00 +01:00
sanikoyes
fb801d4964 Allow to extends constant variable 2017-11-20 23:24:52 +01:00
Rémi Verschelde
4cfc29611e GDScript: Refactor "GD" class prefix to "GDScript" 2017-11-16 18:54:56 +01:00
Renamed from modules/gdscript/gd_compiler.cpp (Browse further)