chromatopelma - Partial r7rs implementation with a focus on ease of implementation and a reusable library. Work in progress.

Age	Commit message (Collapse)	Author	Files	Lines
2023-07-16	Rewrite the macro expander to use set of scopes.HEAD main	Rose Hogenson	2	-158/+327
	I no longer have confidence that the timestamp approach will work for all of the different cases that aren't discussed in the original paper. The original paper was only about expanding a fixed set of syntax transformers, and didn't consider defining new transformers. Set of scopes is an extremely intuitive system, and hopefully that will mean it's easier to implement without bugs. I think I finally understand how it works after watching this video: https://youtu.be/Or_yKiI3Ha4
2023-05-01	Fix an encoding issue for negative numbers.	Rose Hogenson	1	-2/+2

2023-05-01	Rewrite most of the compiler.	Rose Hogenson	44	-6440/+1724
	This represents a major step back in terms of functionality, and amount of code. The latter I think constitutes a major win. Next steps are to reimplement syntax-rules, call/cc, and call-with-values.
2022-09-02	Fix bugs with recursive macros and empty template.	Rose Hogenson	2	-38/+91

2022-09-02	Undo the hacky list constant changes.	Rose Hogenson	2	-41/+4
	We will eventually implement list constants using some kind of rodata.
2022-09-01	Fix some bugs in macros, and add list constants.	Rose Hogenson	2	-94/+236

2022-08-27	Use reg 255 for swapping.	Rose Hogenson	2	-3/+3
	I wanted to use the top reg, for some reason I thought at the time that 127 was the biggest 8-bit number. Obviously it's 255.
2022-08-27	Enable nil constants.	Rose Hogenson	1	-2/+3

2022-08-27	Implement multiple return values.	Rose Hogenson	5	-82/+120

2022-08-23	Change argument passing to use lists.	Rose Hogenson	5	-329/+87
	Using vectors is just horribly complicated combined with builtins like apply, or procedures that take a rest parameter. Now we pass all arguments in a list. Hopefully optimization can undo this for known functions in the future.
2022-08-23	Insert references, not values into the map.	Rose Hogenson	1	-7/+4
	This fixes a bug in compiler.csc.
2022-08-22	Add a few primitive list operations.	Rose Hogenson	1	-4/+14

2022-08-12	Fix bugs in the macro expander.	Rose Hogenson	2	-84/+125
	Now I'm following the rule that you should ignore marks that were added after the binding was defined. I also introduced a lexical environment to handle lambdas.
2022-08-09	Fix a few small bugs.	Rose Hogenson	2	-3/+3
	N lines of code will have about 2N bugs.
2022-08-07	Misc test fixup in the compiler.	Rose Hogenson	5	-21/+28

2022-08-07	Add include-library-declarations.	Rose Hogenson	1	-13/+50

2022-08-07	Fix hoist.	Rose Hogenson	1	-2/+4
	Hoist needs to hoist the function bodies as well.
2022-08-07	Add int<? and eq?.	Rose Hogenson	1	-0/+5

2022-08-07	Fix a bug in expand-body for an empty body.	Rose Hogenson	1	-1/+2

2022-08-07	Define last-index.	Rose Hogenson	2	-0/+26

2022-08-07	Fix a typo in codegen.	Rose Hogenson	1	-3/+1

2022-08-05	Add more of the standard library.	Rose Hogenson	4	-382/+385

2022-08-05	Add call-with-values.	Rose Hogenson	2	-1/+21

2022-08-05	Add call-with-current-continuation.	Rose Hogenson	2	-0/+15

2022-08-04	Add if, and, or, when and friends.	Rose Hogenson	1	-1/+12

2022-08-04	Add if and set!.	Rose Hogenson	2	-5/+66

2022-08-01	Remove mutable globals.	Rose Hogenson	2	-7/+12
	Per a closer reading of R7RS, it's an error to mutate an imported binding with set!. My apologies to Guile when I said they had a bug.
2022-08-01	Modify the project structure.	Rose Hogenson	37	-0/+6441
	Now the lib directory contains what will eventually end up on the user's /usr/lib/csc. When I write make install, it will copy all of the .csc files from lib into the destination lib directory. This means I can start working on the standard library in lib/scheme.