Commit graph

41 commits

Author SHA1 Message Date
Christoph Oelckers
2e5bc3e962 - moved compiler frontend to 'common'. 2020-04-11 20:20:56 +02:00
Christoph Oelckers
466ed4e8f2 - separated the Doom specific parts of the ZScript parser from the core into a subclass. 2020-04-11 20:20:56 +02:00
Chronos Ouroboros
d22a4c835c Mixins now perform a deep copy of the AST. (Fixes default blocks in mixins) 2020-02-08 16:48:15 -03:00
Chronos Ouroboros
e63b6d494a Added mixins for classes. 2019-11-01 18:34:52 -03:00
alexey.lysiuk
98128d9fa3 - added ability to specify deprecation messages in ZScript
It's an optional extension of deprecated keyword:
    deprecated("2.4", "use ModernFunction instead") int OldFunction();
    deprecated("3.5", "use ModernVariable instead") int OldVariable;

Usage of such members will produce the following report:
    Script warning, ":zscript.txt" line 123:
    Accessing deprecated function OldFunction - deprecated since 2.4.0, use ModernFunction instead
    Script warning, ":zscript.txt" line 456:
    Accessing deprecated member variable OldVariable - deprecated since 3.5.0, use ModernVariable instead
2019-08-28 13:37:48 +02:00
Christoph Oelckers
70d3c31551 - allow defining flags in the script declaration of a class and do that for Weapon. 2018-11-25 09:29:12 +01:00
Christoph Oelckers
cf8447d19c -protected critical portal data from getting written to by user code.
This data is game critical and may only be altered by code that knows what is allowed and what not. It must never be altered by any user code ever.
However, since the SkyViewpoint actors need to set up some relations between themselves and the default sky portals the previously purely internal 'internal' flag has been exported as a new keyword.
2018-04-15 12:13:02 +02:00
alexey.lysiuk
74357ced0c Fixed read of potentially junk values in ZScript parser
The following ill-formed ZScript code might crash targets with sizeof(int) != sizeof(void*) like 64-bit Intel
class test { void func() { if (true) ( return; ) } }
2018-02-21 16:26:04 +02:00
Christoph Oelckers
6599e2c425 - moved the VM types into their own file and only include it where really needed. 2017-04-13 01:12:04 +02:00
Christoph Oelckers
fc9e304189 - separated class descriptors from VM types.
Combining these two groups of data has been the cause of many hard to detect errors because it allowed liberal casting between types that are used for completely different things.
2017-04-12 22:46:49 +02:00
Christoph Oelckers
96631e8808 - make PClass not inherit from PStruct.
Having these two types related can cause problems with detection in the compiler because for some parts they need quite different handling.
Common handling for the fields has been moved into PSymbolTable but overall redundancy was quite minor as both types share surprisingly little functionality.
2017-04-12 17:21:13 +02:00
Christoph Oelckers
5fd86cf98c - added some syntactic help to the ZScript parser to allow defining the arrays with native structs on the script side instead of having to define them internally. 2017-03-13 12:51:09 +01:00
Christoph Oelckers
456ac64723 - implemented version checks for compile-time type determination and for class inheritance.
Note that in this system, DECORATE counts as version 2.0, so any data that should be available to DECORATE should not use version restriction.
2017-03-05 17:58:55 +01:00
Christoph Oelckers
7df698dad8 - implemented the parser basics of a ZScript versioning system.
Note that this completely disables the newly added keywords 'play' and 'ui' for unversioned code to allow using them as identifiers as I have found at least one mod that uses a variable named 'play' that would have been rendered broken otherwise.
This also disables many ZScript only keywords for other parsing jobs.
2017-03-05 14:13:00 +01:00
ZZYZX
3a57a9809f Removed nonew class modifier 2017-03-03 22:42:12 +02:00
ZZYZX
b5ab011bb9 Static virtualscope checking. This is possible, because virtualscope can't produce false positives (data readable for everyone), only false negatives (which are handled at runtime later) 2017-02-18 04:07:12 +02:00
ZZYZX
0f031c5f22 Renamed 'allowui' to 'clearscope'. 'allowui' doesn't reflect the real meaning of the keyword which clears implicit 'play' or 'ui' inherited from parent class (for classes) or owning type (for methods/fields) 2017-02-17 18:24:01 +02:00
ZZYZX
4fe9c7d8c8 Added parsing of ui, play, allowui and const qualifiers 2017-02-17 17:58:16 +02:00
ZZYZX
5e5d0d3e57 Using separate keyword 'nonew' as reverse abstract; nonew is inherited, and nonew class can only be created from the first nonew class in the hierarchy 2017-02-16 12:40:09 +02:00
Christoph Oelckers
f720073b31 - removed all code that was only there to implement the broken Simplifier that just got removed. 2017-01-23 01:37:43 +01:00
ZZYZX
6f5fff00a0 Implemented static methods in String struct. Implemented String.Format and String.AppendFormat. Implemented native vararg methods for the future. 2017-01-21 10:32:26 +01:00
Christoph Oelckers
179b6e1a39 - added property definitions to the ZScript parser. This will allow defining custom properties for the default block in custom base classes. See 'Health' for an example.
- support transient object member variables for information that does not need to be put in a savegame.
- fixed: special initialization of objects needs to pass the proper defaults along, otherwise the parent classes will use their own, inappropriate one.
2017-01-15 16:55:30 +01:00
Christoph Oelckers
f722967abe - added automatic type deduction capabilities for local variables. If you type 'let variable = value;' the type of 'variable' will be deduced from the given value. This is mostly of interest for type casting pointers, because 'let p = Classtype(objectvar);' does not require writing the class type name twice. 2016-12-05 13:24:42 +01:00
Edoardo Prezioso
cd919e72e1 - Don't null-check the ZCC_TreeNode 'this' pointer.
Compilers are allowed to simplify the 'this == nullptr' code block because it makes no sense in 'well-defined C++ code'.
2016-11-23 23:30:54 +01:00
Christoph Oelckers
099b9970ef - added proper definitions for all exported native fields.
- synthesize native fields for all declared flags, not just for AActor.
2016-11-22 23:43:32 +01:00
Christoph Oelckers
7d99552903 - added two new integral types SpriteID and TextureID, both are needed to allow proper serialization as they require something different to be written out than a regular integer. 2016-11-21 13:45:33 +01:00
Christoph Oelckers
5951a9449c - added static constant arrays. At the moment they can only be defined inside functions due to lack of dedicated storage inside classes for static data.
- added new VM instructions to access the constant tables with a variable index.
- refactored VMFunctionBuilder's constant tables so that they are not limited to one entry per value. While this works fine for single values, it makes it impossible to store constant arrays in here.
2016-11-20 18:00:37 +01:00
Christoph Oelckers
f11f020b6c - allow functions in structs. This is needed for several internal data types like players, sectors, lines, etc.
- added a new type 'NativeStruct'. This will be used for types that cannot be instantiated, and is also needed to cleanly handle many internal types that only can exist as reference.
2016-11-19 12:12:29 +01:00
Christoph Oelckers
3bcd85eb8a added class pointer casts. Due to grammar problems the type has to be put into parentheses to get the class token out of the global parsing namespace:
class<Actor> myclass = (class<Actor>)(GetClass());
2016-11-17 20:31:53 +01:00
Christoph Oelckers
a2e17c0ab5 - implemented usage restrictions for action functions. 2016-11-15 21:38:12 +01:00
Christoph Oelckers
7bcd83f0c1 - parser for states flags. 2016-11-14 19:35:29 +01:00
Christoph Oelckers
72e77a6c65 - implemented handling for virtual function.
Syntax-wise I chose to make it as strict as possible to reduce the chance of errors: Virtual base functions must be declared with the 'virtual' keyword, and overrides in child classes with the 'override' keyword. This way any mismatch in parameters that otherwise would cause silent failure will outright produce a compile error.
2016-11-11 20:05:07 +01:00
Christoph Oelckers
24925c88a8 - added readonly pointers. They need to be defined with 'readonly<classtype>'. These are significantly different from declaring a field readonly in that they do not disallow modification of the variable itself but what it points to. For the actor defaults this is necessary to prevent accidental modification. A readonly pointer is actually a different type than a regular pointer.
- fixed code generation for dynamic cast. It was missing the jump instruction after the compare.
2016-11-05 13:51:46 +01:00
Leonard2
94410accf4 Renamed "VectorInitializer" to "VectorValue"
This was really confusing for me as this is an actual vector "value" rather than an "initializer"
2016-10-30 07:34:14 +01:00
Christoph Oelckers
9400f97189 - implemented local vector variables. Currently only the definition plus initial assignment works.
- removed all vector4 handling that had already been added, now that this type can no longer be defined.
2016-10-28 15:15:30 +02:00
Christoph Oelckers
3fa315aaea - replaced 'vector<2>' and 'vector<3>' with 'vector2' and 'vector3'.
- added initializer syntax for vectors. A vector can be set with vectorvar = (x,y,z); for a 3-dimensional vector and vectorvar = (x, y); for a 2-dimensional one.
2016-10-28 01:14:21 +02:00
Christoph Oelckers
9f8a5dae21 - scriptified A_BruisAttack.
- removed 'self' as a dedicated token. Internally this gets handled as a normal but implicitly named variable so the token just gets in the way of proper processing.
- removed P_ prefix from SpawnMissile export.
- fixed a crash with misnamed function exports.
2016-10-23 17:15:24 +02:00
Christoph Oelckers
a2116fc7bf - created an export for P_SpawnMissile so that I can do some tests with functions.
- allow class extensions.

These are separate blocks in different files that get concatenated to one class body for processing. The reason is to allow spreading the many functions in Actor over multiple files, so that they remain manageable. For example, all the Doom action functions should be in their respective files, but their symbols need to be in Actor. To extend a class, both files need to be in the same translation unit, so it won't allow user-side extension of internal classes.
2016-10-23 12:57:21 +02:00
Christoph Oelckers
cfbcfc440d - 'fixed' local variable declrations to work like C, not like some Lua-inspired nightmare. Also added proper initialization syntax for arrays. 2016-10-19 13:07:44 +02:00
Christoph Oelckers
433bf46010 - removed token 'mode' because it isn't used anywhere and clashed with some actor properties.
- fixed uninitialized counter variable in DECORATE parser.
- allow dottable_id of xxx.color so that the property parser can parse 'powerup.color'.
- fixed crash with actor replacement in script compiler.
- add the lump number to tree nodes because parts of the property parser need that to make decisions.
- removed test stuff.
- converted inventory.txt, player.txt and specialspot.txt to ZSCRIPT. These were the minimal files required to allow actor.txt to parse successfully.
- removed the converted files from the DECORATE include list so that these are entirely handled by ZSCRIPT now.
2016-10-13 20:45:52 +02:00
Christoph Oelckers
b1a83bfd26 - started with cleanup and separation of DECORATE code.
* everything related to scripting is now placed in a subdirectory 'scripting', which itself is separated into DECORATE, ZSCRIPT, the VM and code generation.
 * a few items have been moved to different headers so that the DECORATE parser definitions can mostly be kept local. The only exception at the moment is the flags interface on which 3 source files depend.
2016-10-12 19:22:33 +02:00
Renamed from src/zscript/zcc_parser.h (Browse further)