After I get the paw up and running I plan to deal with the next inconvenience of development, the inconsistent preprocessor command support (and the lack of #for etc). I'd like to start a debate here on what options would be desirable vs what is possible implementation wise, so far these are the notes for what I plan to implement (and how on some of them)
Code:/* prepaw (paw preprocessor) planned features * > Case sensitive for faster preprocessing * > No escape characters for macros, just slows down preprocessing & makes * code unneccessarily confusing, commands are used for multi-line defines * instead * > All commands search for macros with matching name in scope * > #trigger prepaw looks for a new trigger before treating as a command, * for example to switch to @command then back you would use: * #trigger @ * @trigger # * > #undef Behaves as usual, triggers an error & aborts when attempting to * undefine anything defined with #predef * > #global Behaves as #define would've but ends with #end, * escape characters are unneeded * > #static Behaves as #global but it's define shows up only in the file * scope * #line N ID, used for declaring what line and file id is relavent from * here on, for example if an include was on the first line of a file that * happened to have the id 3 (that's where paw's GC starts assigning new * IDs, 0, 1 & 2 are reserved for pawin, pawout, & pawerr) then prepaw * will insert the contents of the file before the #include command then * replace the #include with #line 1 3 * > #scoped Behaves as #static but in macro scope (if there is one) * > #predef Behaves as #scoped, but cannot be undefined * > #include Behaves as usual * > #import Behaves as usual * > #source No commands are processed between this, #end, #import & #include * > #warnof Expects a string, emits it as a message, increases warning count * > #fixerr Expects a string, emits it as a message, increases error count * > #abort Behaves as #fixerr but aborts preprocessing * > #pragma once behaves as usual * > #if, #ifdef, #elif & #endif behave as usual * > #for([i = macro/constant, ...]; exit_condition; [modify var,...]) * where [...] is optional, scope ends with #end, variables behave as if * declared with #predef * > #while(exit_condition) * > #do ends with #while, done at least once * > #modify(name,operator) expression, needed for #for, #while & #do loops * to modify their scoped variables, names that are not flat literals like * 0xC0FFEEUL, 0.01f, 'x', "string" or `multi-line string` get treated as * a `multi-line string` * > #end Ends scope, triggers an error & aborts if in global scope */
.
Originally Posted by Salem
