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1884 commits

Author SHA1 Message Date
Bill Currie
0d01930056 Link a bool to its block rather than the block's head. 
This makes the flow make a little more sense.
 2011-01-21 18:50:17 +09:00
Bill Currie
977c48d728 Make operator type overrides clear. 2011-01-21 15:57:53 +09:00
Bill Currie
aec9f256a7 Get calls mostly working. 
Bind seems to be broken, but parameters seem to be being set correctly.
 2011-01-21 15:54:53 +09:00
Bill Currie
5c5fa67e43 Minor tweaks of the expression tree output. 2011-01-21 15:34:42 +09:00
Bill Currie
96fae582e3 Implement bind expressions. 2011-01-21 11:27:40 +09:00
Bill Currie
4a24393d8d Temp expressions now use operands instead of defs. 2011-01-21 11:26:43 +09:00
Bill Currie
2998e578fb Get very basic deref assignments working. 
More complicated expressions will not work yet.
 2011-01-21 10:59:16 +09:00
Bill Currie
ff6e2584da Handle block sub-expressions that produce results. 2011-01-21 10:57:47 +09:00
Bill Currie
16e013ff5d Allow the operand to override the symbol's type. 2011-01-21 10:56:32 +09:00
Bill Currie
3f2793ef72 Get a lot of statements being generated. 2011-01-20 23:26:13 +09:00
Bill Currie
e45ea4b2ae Move the statement printing near the top of the file. 2011-01-20 18:07:24 +09:00
Bill Currie
35b7278967 Re-disable the next-edge constraints. 
This gives a flatter layout.
 2011-01-20 15:36:10 +09:00
Bill Currie
08e387ebac Slight improvement to branch instruction nodes/labels. 2011-01-20 15:33:13 +09:00
Bill Currie
f8cc347dce Print expressions as dot files. 
While the resulting images can be a little confusing, they're much easier
to read than my cryptic postfix notation.
 2011-01-20 15:23:19 +09:00
Bill Currie
0594609b3a Get the label from the right expression. 2011-01-19 22:25:43 +09:00
Bill Currie
5deda9c9b9 Clean out ex_def as ex_symbol replaces it. 2011-01-19 22:25:04 +09:00
Bill Currie
b5424bca7d Start work on getting expressions converted to internal statements. 2011-01-19 15:47:45 +09:00
Bill Currie
cac2e04b18 Avoid namespace issues with dstatements. 2011-01-19 11:35:34 +09:00
Bill Currie
f2ef24d0cc Make symbols use the new value struct for constants. 2011-01-19 11:09:54 +09:00
Bill Currie
e08efe036b Move the constant expression values into their own struct. 2011-01-19 08:43:24 +09:00
Bill Currie
ff6e1b4d6c Get functions attempting to generate code. 
However, the statements are only printed as expressions.
 2011-01-19 08:38:09 +09:00
Bill Currie
87ce9f5333 Get basic function creation working. 
Even more FIXMEs, but the pascal parser can now create functions. The
function records even get emitted.
 2011-01-18 12:47:13 +09:00
Bill Currie
8fb1b49a9d Add support for function symbols. 2011-01-18 10:46:42 +09:00
Bill Currie
b186173d18 Fix a segfault in structure finalization. 2011-01-18 08:59:44 +09:00
Bill Currie
21c0c960ae Initialize data before types. 
This is needed for string data. It might be better to init saved strings
separately, but this works for now.
 2011-01-18 08:58:43 +09:00
Bill Currie
3fe7a7250a Handle unnamed structures in make_structure. 
Symbols may not have null names.
 2011-01-18 08:56:47 +09:00
Bill Currie
b76a5c5284 Add my QuakePascal test program. 
Trivial as it is...
 2011-01-17 22:44:58 +09:00
Bill Currie
ea3895805b Rewrite much to use symbols and symtabs. Gut emit.c. Massive breakage. 
That which isn't rewritten is horribly broken. However, this does include a
nice mechanism for building QC structs for emitting data.

emit.c has been gutted in the spirit of "throw one away".

There is much work to be done to get even variables emitted, let alone
code. Things should be a little more fun from here on.
 2011-01-17 22:34:41 +09:00
Bill Currie
85de101aa3 Break out the defspace code. 
This also makes some improvements to the free block handling code.
 2011-01-17 22:34:41 +09:00
Bill Currie
d3a98af783 Make internal_error globally available. 2011-01-17 22:34:41 +09:00
Bill Currie
537b930ba6 Add new_symbol_type to ease creation of typed symbols. 
This is inteded for code generation functions that need to create
variables and structures.
 2011-01-17 12:04:41 +09:00
Bill Currie
ffea505678 Cleanup QC's constant handling based on QP. 2011-01-14 12:10:28 +09:00
Bill Currie
c38ea0b1bc Correct the spelling of "nil". 2011-01-14 12:07:40 +09:00
Bill Currie
fb8b3d1211 Rework the lexer and parser to use symbols instead of defs. 
Currently parses the test program just fine, but code generation is very
very broken.
 2011-01-13 14:58:16 +09:00
Bill Currie
8f71986306 Add symbol expressions (like def expressions). 
They will eventually replace def expressions. Currently quite broken.
 2011-01-13 14:54:24 +09:00
Bill Currie
008f4e1929 Don't return .return in advanced mode. 2011-01-13 14:50:25 +09:00
Bill Currie
5b8725ca66 Rewrite the symbol (table) management in light of actual usage. 2011-01-13 14:48:38 +09:00
Bill Currie
ac14db7b1b Create a function to ease param list building. 
This is especially useful for QuakePascal, but it will mean I'll be able to
get rid of the parameter reversals in Ruamoko later on.
 2011-01-13 14:45:53 +09:00
Bill Currie
258c896e4d Create a function to build if/else blocks. 2011-01-13 14:33:16 +09:00
Bill Currie
638f4445cc More return code cleanup. 
Don't use the true void return in traditional mode.
Prefer the true void return over "done" at the end of functions.
Don't emit the above if the last emitted statement is a return and there is
no label at the end of the function.
 2011-01-13 00:46:46 +09:00
Bill Currie
3c9991364b Add a "void return" instruction. 
I got fed up with always having to explicty return something.
 2011-01-13 00:29:56 +09:00
Bill Currie
9ce9b70484 Add variadic functions. 
Already extending QuakePascal, and many basics aren't there yet :P
 2011-01-12 23:39:59 +09:00
Bill Currie
02b3dde83b Make QuakePascal programs runnable. 
Generate a mini-main function (".main", to avoid namespace pollution) that
calls the function named by "program", and make qwaq check for ".main" as
well as "main". If both are present, ".main" will take priority.
 2011-01-12 23:39:22 +09:00
Bill Currie
332b7da127 Minor header cleanup. 2011-01-12 23:34:15 +09:00
Bill Currie
96ba4605fa Fix the micro-optimization that avoided emitting x = x 
The check was broken by alias defs. If a def is aliased, the alias must be
checked.
 2011-01-12 23:33:51 +09:00
Bill Currie
c787923c99 Forgot to remove that print_expr. 2011-01-11 12:11:54 +09:00
Bill Currie
08bf7e24de Produce nicer code for post-op. 
The temp notice is still there for arrays (that's caused by issues in
constfold.c, not easily fixilbe), but it's harmless and correct (and nice)
code is much more important.
 2011-01-11 12:07:48 +09:00
Bill Currie
ad787ae98a Set the expression type to the correct value for addresses. 2011-01-11 12:06:40 +09:00
Bill Currie
21d7c78eb7 Allow deep copying of expression trees. 
Certain expression types (eg labels) are created fresh.
 2011-01-11 12:05:29 +09:00
Bill Currie
c73ac30e3f Turns out decrementing the users was very very bad. 2011-01-11 10:56:36 +09:00