52 lines
1.5 KiB
Markdown
52 lines
1.5 KiB
Markdown
# isbpl
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Improved Stack-Based Programming Language
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Incomplete, not currently compilable, only interpretable.
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ISBPL is now obsolete. Try [SPL](https://github.com/tudbut/spl) instead.
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Stuff: [TudbuT/isbpl-random-stuff](https://github.com/TudbuT/isbpl-random-stuff)
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---
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## ISBPL is similar to Lisp:
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```lisp
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(print (+ 1 (* 1 2)))
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```
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is the same as
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```isbpl
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2 1 * 1 + print
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```
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or
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```isbpl
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(((2 1 *) 1 +) print)
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```
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in both languages, this will print 3.
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These examples used the print function, which does not exist by default, instead, puts should be used in combination with \_string.
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---
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## Objects, Functions, and Variables in ISBPL
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OOP works like this:
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- There are three separate function resolvers:
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- Object
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- Local
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- (Multiple more levels determined by the frame height)
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- Global
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- They are executed in the order shown above
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- The object resolver peeks onto the stack, gets the type of the object, and checks for methods on the type, if it finds one, it executes it
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- The local resolver checks for functions defined in the current function, but not in any other function or area
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- The global resolver checks for top-level functions, meaning ones that arent in any other function.
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- Because variables are native functions under the hood, they are also called by the function resolvers
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- Object-local variables are in a Table: `Type?->Instance?->ID?->Value`
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### To call a method of an object:
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```isbpl
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parameter1 parameter2 etc object method
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```
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As explained above, methods are resolved separately, and it is therefore not required to define them in any other way.
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