How to Map R Primitives to Function Calls?

[EagleoutIce]

Collect mapping rules of all R structures:

• if(p) x → `if`(p, x, NULL)
• if(p) x else y → `if`(p, x, y)
• for(i in v) b → `for`(i, v, b)
• while(p) b → `while`(p, b)
• repeat b → `repeat`(b)
• break → `break`()
• next → `next`()
• return → `return`()
• function(args) b → `function`(alist(args), b)
• x <- y → `<-`(x, y) (similar with <<-, ->, ->>, =, and the others)
• x * y → `*`(x, y) (similar with all other bin ops, now, assignments and binops are indifferent)
• -x → `-`(x) (?)
• 3 → 3 (same for other literals)
• { b } → `{`(b) (same for parenthesis, but we have to check if this accounts for arguments as well)

[EagleoutIce]

https://adv-r.hadley.nz/functions.html#special-forms

[EagleoutIce]

basis on: https://svn.r-project.org/R/branches/R/src/main/gram.y