Skip to content

Clarify grammar #111

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 3 commits into
base: master
Choose a base branch
from
Open

Clarify grammar #111

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
dc10a34
Clarify grammar
mgree Mar 14, 2021
91ddf55
add switch, clarify infix functions
mgree Mar 15, 2021
e89f9f8
correct switch syntax
mgree Mar 15, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 4 additions & 2 deletions README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -55,12 +55,13 @@ Variables, X ::= X
Formals, F ::= X | [X : Type]
TopLevel, TE ::= (define X E) | (define (X F ...) [: T] E ...) | E | TE ...
Expression, E ::= X
Ascription | (ann E T [Blame Label])
Ascription | (: E T [Blame Label])
Binding | (let ((X [: T] E) ...) [: T] E ...)
| (letrec ((X [: T] E) ...) E ...)
Functions | (lambda (F ...) [: T] E ...)
Application | (E_rator E_rand ...)
Conditionals | (if E_cond E_conseq E_alt)
| (switch E [((E_opt ...) E) ...] (else E ...))
Iteration | (repeat (x_i E_start E_end) [(x_acc [: T] E_init)] E)
Sequencing | (begin E_eff ... E_value)
Unit | ()
Expand All @@ -73,8 +74,9 @@ ops ::= + | - | * | binary-and | binary-or | ...
| fl+ | fl- | fl* | ...
| < | <= | = | >= | > | ...
| fl< | fl<= | fl= | fl>= | fl> | ...
Blame Label ::= "..."
Type, T ::= Dyn | Unit | Bool | Int | Float
| (-> T ...) | (Ref T) | (Vect T) | (Tuple T ...)
| (T ... -> T) | (Ref T) | (Vect T) | (Tuple T ...)
| X | (Rec X T)
```

Expand Down