Commit graph

56 commits

Author SHA1 Message Date
Randy Heit
57bb9c2f7a Better disassembly of FLOP instructions.
- Annotate FLOP instructions with the name of the floating point operation
  indicated by the C field.
2013-07-25 22:29:59 -05:00
Randy Heit
f6bbd5abf7 Simplify AST dumps.
- More forced line breaks.
- Don't use extra parentheses in places where it can still be unambiguous
  without them.
- Don't print the UserType for basic-types that aren't ZCC_UserType.
2013-07-24 21:35:02 -05:00
Randy Heit
7d304a4cb6 Partially revert commit 46c0127
- Being able to omit optional function arguments is not such a nonsensical
  thing after all. However, the previous grammar was still inadequate for
  representing this in a useful way.
2013-07-24 20:59:29 -05:00
Randy Heit
a136ca65ea Allow functions without parameters
- Fixed: Trying to define a function without any parameters would silently
  discard the function, because the declarator tested FuncParams instead
  of FuncName to decide if it was a function.
2013-07-23 20:43:15 -05:00
Randy Heit
67caf3303b Add the array size to ZCC_VarName 2013-07-23 19:59:47 -05:00
Randy Heit
0d25ed8289 state_call needs parenthesis around func_expr_list
- Fixed: state_call needs to enclose func_expr_list in LPAREN/RPAREN
  itself, because func_expr_list doesn't include them. This means it also
  needs a separate production to accept calls without a parameter list.
2013-07-23 19:34:21 -05:00
Randy Heit
46c0127ebb Don't accept function params starting with a comma
- Fixed: func_expr_list would accept nonsense like this:
    Myfunction(, 1, 2);
2013-07-23 19:28:58 -05:00
Randy Heit
aadd4e4de6 ZCCParseNode needs to initialize TopNode
- If the parsing is a complete failure, then TopNode won't ever be set to
  anything during the parsing process.
2013-07-23 18:38:57 -05:00
Randy Heit
733e5fa2e1 Recognize C-style array declarations
- The variable_name production now accepts an optional array size
  argument. (Not yet passed to the AST.)
- The notation for using dotted ID lists as types has been changed from
  [id1.id2] to .id1.id2, beacuse the former conflicts with the notation
  for arrays.
2013-07-19 23:25:01 -05:00
Randy Heit
9cf9226e86 Don't leave open parentheses hanging at line breaks 2013-07-17 23:47:06 -05:00
Randy Heit
c733e4229a Added more linebreaks to AST dumps 2013-07-17 23:47:06 -05:00
Randy Heit
726ecaf01b Added basic pretty printing for AST dumps 2013-07-17 23:47:05 -05:00
Randy Heit
a7bbe299e3 Assignment for expr ::= unary_expr was backwards 2013-07-13 23:25:53 -05:00
Randy Heit
ec32248f31 Set value of assign_op explicitly. 2013-07-13 22:34:33 -05:00
Randy Heit
62fb43d67a Properly pass statements around in the parser. 2013-07-13 22:26:29 -05:00
Randy Heit
6088acd4c0 Add function body to ZCC_FuncDeclarator 2013-07-10 23:26:56 -05:00
Randy Heit
572823046c Add newlines for better readability in AST dump. 2013-07-10 23:26:01 -05:00
Randy Heit
c2e700f116 - Move the RET and RETI final flag into the high bit of the destination selector.
SVN r3922 (scripting)
2012-10-29 01:11:24 +00:00
Randy Heit
6e88529324 - Added a RETI instruction for returning 15-bit signed immediate values.
- Changed Actor's Damage property into an actual function. All access to the damage property
  must now be done through GetMissileDamage. actor->GetMissileDamage(0, 1) is equivalent
  to the former actor->Damage, for the case where actor->Damage was not an expression. (I
  suppose I will probably need to make a thunk for DECORATE expressions that want to read it.)
- Cleaned up some decorate expression evaluation functions that are no longer used.

SVN r3919 (scripting)
2012-10-28 04:36:52 +00:00
Randy Heit
29bc9cbf35 - Change the formatting for floating immediates in the dissasembly to %g.
SVN r3917 (scripting)
2012-10-28 01:16:01 +00:00
Randy Heit
110c253854 - Silence GCC warning stuffs.
SVN r3911 (scripting)
2012-10-26 22:56:50 +00:00
Randy Heit
1a02d16356 - Added DecoFindSingleNameState for the extremely common case of finding a state with only
one name in its label. This avoids the alloca and security cookie calls.
- Consolidated lots of copy-pasted code in thingdef_expression.cpp to install helper functions
  into FindDecorateBuiltinFunction().

SVN r3907 (scripting)
2012-10-26 04:04:06 +00:00
Randy Heit
79228e4331 - Fixed: The disassembly for jmp opcodes displayed the wrong address.
SVN r3904 (scripting)
2012-10-23 04:05:45 +00:00
Randy Heit
38d7b7d203 - Fixed errors and warnings when compiling with GCC. (Unfortunately, the VC++ debug builds
become ungodly slow when using mods with complex DECORATE. The GCC debug builds run just
  fine, however. Hopefully this is something that can be fixed later with an assembly-optimized
  version of the main VM loop, because I don't relish the thought of being stuck with GDB
  for debugging.)
- Fixed: The ACS_Named* action specials were erroneously defined as taking strings instead of
  names.
- Fixed: Copy-paste error caused FxMultiNameState::Emit to generate code that called
  DecoNameToClass instead of DecoFindMultiNameState.
- Updated FxActionSpecialCall::Emit for named script specials.
- Fixed inverted asserts for FxMinusSign::Emit and FxUnaryNotBitwise::Emit.


SVN r3893 (scripting)
2012-10-18 03:19:27 +00:00
Randy Heit
2d139f3846 - DoParse() now writes out the parsed AST for the input file to <file>.ast.
Maybe TODO: Find a simple LISP pretty printer that isn't written in LISP so that the output
  isn't all on one big long line.
- zcc-parse.lemon now returns the complete AST through the parse state.
- Fixed crash in PrintEnumNode().

SVN r3773 (scripting)
2012-07-20 02:54:51 +00:00
Randy Heit
a5c938445a - Oh look! It's a comment that didn't get saved before the last commit!
SVN r3772 (scripting)
2012-07-20 01:07:04 +00:00
Randy Heit
fcceeb814a - Changed state calls to use the VM's standard return value mechanism. StateCallData has been
removed as a result, so now action functions take a minimum of three parameters rather than four.

SVN r3770 (scripting)
2012-07-17 05:31:41 +00:00
Randy Heit
e1a2f3b546 - Added the TAIL instruction to perform a CALL and a RET in the same instruction. The called
function will pass its results directly to this function's caller. Eventually, this should
  be changed to do a proper tail call for scripted functions.

SVN r3769 (scripting)
2012-07-17 04:06:28 +00:00
Randy Heit
644f0c0e05 - Add a name to VMFunction so that the disassembly can be more informative.
SVN r3768 (scripting)
2012-07-17 03:35:03 +00:00
Randy Heit
bee4c3e760 - Added functions for converting the AST to text. This is not hooked in anywhere yet, since
the parser currently just throws the AST away.

SVN r2969 (scripting)
2010-10-31 04:36:00 +00:00
Randy Heit
4b8900816b - Make the ZCC parser compilable again. Does every rule in the grammar that needs to appear in
the AST do so now? That would sure be nice.

SVN r2715 (scripting)
2010-09-08 04:32:31 +00:00
Randy Heit
12c6ddfbfb - So, progress...
SVN r2707 (scripting)
2010-09-07 04:11:32 +00:00
Randy Heit
081ebbb64b - I have decided to opt for simplicity over C-like-ness and group array sizes with the rest
of the type declaration rather than split it up after the variable name.
- More AST work. At this rate, maybe I'll finally be building a complete AST by the end of the
  month!

SVN r2499 (scripting)
2010-08-10 04:25:52 +00:00
Randy Heit
9d931ed10c - Make AST nodes for states.
SVN r2425 (scripting)
2010-07-11 18:53:41 +00:00
Randy Heit
85d869315b - More AST'ing about.
SVN r2359 (scripting)
2010-06-06 21:04:55 +00:00
Randy Heit
c043627cc1 - Some abstract syntax tree creation stuff. (Plus some tentative type creation stuff that made
me realize I would be better off creating a type-agnostic AST for the entire input instead
  of trying to tentatively create types before they're seen.)

SVN r2354 (scripting)
2010-06-06 04:15:28 +00:00
Randy Heit
d87d2c731f - Use a map for symbol tables instead of an array.
SVN r2258 (scripting)
2010-03-30 04:11:16 +00:00
Randy Heit
f88f601230 - Removed the third parameter from dumpclasses when it was restricted it to Actors, because
I have no idea what that was all about.
- Got rid of FActorInfo and merged it into a new PClassActor.

SVN r2240 (scripting)
2010-03-24 02:49:37 +00:00
Randy Heit
7aa402b2a5 - Add a preliminary grammar and a test driver for it.
SVN r2233 (scripting)
2010-03-19 04:04:13 +00:00
Randy Heit
873ece3d55 - Added a vmengine console command to switch the VM engine at runtime.
SVN r2164 (scripting)
2010-02-14 20:16:05 +00:00
Randy Heit
6f1bf257e9 - State code now properly calls action functions and has a RET instruction. As expected,
running with the checked VM can be quite slow, since it has asserts everywhere. Some other
  fixes were needed before the code actually worked:
  - A_CallSpecial needs to have its arguments cast to ints.
  - Some functions that set pnum/paramnum directly did not decrement it by 1. This also applies
    to A_Jump, though it just uses the value of paramnum instead of changing it.
  - Renamed pnum in the PARAM macros to paramnum, since pnum is already used in a few other
    places for something different, so this makes searching for it easier.
  This has not been tested especially thoroughly, but a first glance seems to indicate success.

SVN r2163 (scripting)
2010-02-14 19:59:21 +00:00
Randy Heit
739e684549 - Converted all action functions be directly callable by the VM (though they are not yet
usable).

SVN r2154 (scripting)
2010-02-12 06:04:57 +00:00
Randy Heit
7ea11cd169 - Allocate VM script code and constants in a single block for better locality of
reference.

SVN r1924 (scripting)
2009-10-17 02:09:29 +00:00
Randy Heit
e209a2f208 - Stop aliasing strings onto names for function parameters.
SVN r1923 (scripting)
2009-10-17 01:38:54 +00:00
Randy Heit
e5ef25591d - Use a union, rather than pointer aliasing, to access the parts of a VM instruction.
SVN r1922 (scripting)
2009-10-17 00:33:23 +00:00
Randy Heit
c424c61ffc - Added fixed registers that won't be freed automatically, so that parameters
can actually be used. In the end, all temporaries should be assigned to
  unique virtual registers, and a register allocator can alias them to real
  registers, but as long as we don't do any CSE, this is good enough for now.


SVN r1920 (scripting)
2009-10-15 23:11:54 +00:00
Randy Heit
3cbac657d6 - Added type coercion for action function parameters.
- I add PARAMI, and then I don't even do it right...

SVN r1919 (scripting)
2009-10-15 22:15:55 +00:00
Randy Heit
126c738116 - Added PARAMI for the common case of passing an integer constant to a function.
- Made FxParameter::Emit free its operand's register.

SVN r1918 (scripting)
2009-10-15 21:59:37 +00:00
Randy Heit
caa5f6dbdc - Send disassembly to a file, since it gets way too slow when sending a disassembly
of every single thing to the rich edit control.

SVN r1917 (scripting)
2009-10-15 21:23:59 +00:00
Randy Heit
85cc335725 - Added dummy code generation for states that pass parameters to action functions.
Currently, they're only good for disassembly and pasting into a proper text editor
  for viewing.
- Fixed some problems with the FxExpression emitters that were revealed by actually
  using them on the standard actors.

SVN r1911 (scripting)
2009-10-15 03:58:23 +00:00