https://github.com/asmlover/sage
The sage programming language.
https://github.com/asmlover/sage
cpp1z interpreter language
Last synced: 2 months ago
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The sage programming language.
- Host: GitHub
- URL: https://github.com/asmlover/sage
- Owner: ASMlover
- Created: 2019-03-10T09:52:36.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2019-05-28T03:12:35.000Z (almost 6 years ago)
- Last Synced: 2025-03-13T23:13:42.012Z (2 months ago)
- Topics: cpp1z, interpreter, language
- Language: C++
- Size: 66.4 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# **SAGE**
***
## **GRAMMER**
```
program -> declaration* EOF ;
declaration -> class_decl | func_decl | let_decl | statement ;
class_decl -> "class" IDENTIFIER ( "(" IDENTIFIER ")" )? "{" NL func_decl* "}" NL ;
func_decl -> "fn" IDENTIFIER "(" parameters? ")" block_stmt ;
parameters -> IDENTIFIER ( "," IDENTIFIER )* ;
let_decl -> "let" IDENTIFIER ( "=" expression )? NL ;
statement -> if_stmt | while_stmt | for_stmt | return_stmt | break_stmt
| print_stmt | block_stmt | expr_stmt ;
if_stmt -> "if" expression block_stmt ( "else" block_stmt )? ;
while_stmt -> "while" expression block_stmt ;
for_stmt -> "for" init_clause expression? ";" expression? block_stmt ;
init_clause -> loop_let | loop_expr | ";" ;
loop_let -> "let" IDENTIFIER ( "=" expression )? ";" ;
loop_expr -> expression ";" ;
return_stmt -> "return" expression? NL ;
break_stmt -> "break" NL ;
print_stmt -> "print" ( expression ( "," expression )* )? NL ;
block_stmt -> "{" NL declaration* "}" NL ;
expr_stmt -> expression NL ;
expression -> assignment ;
assignment -> ( call "." )? IDENTIFIER ( assign_oper ) assignment
| logic_or ;
assign_oper -> "=" | "+=" | "-=" | "*=" | "/=" | "%=" ;
logic_or -> logic_and ( "or" logic_and )* ;
logic_and -> equality ( "and" equality )* ;
equality -> comparison ( ( "is" | "!=" | "==" ) comparison )* ;
comparison -> addition ( ( ">" | ">=" | "<" | "<=" ) addition )* ;
addition -> multiplication ( ( "+" | "-" ) multiplication )* ;
multiplication -> unary ( ( "*" | "/" | "%" ) unary )* ;
unary -> ( "not" | "!" | "-" ) unary | call ;
call -> primary ( "(" arguments? ")" | "." IDENTIFIER )* ;
arguments -> expression ( "," expression )* ;
primary -> INTEGER | DECIMAL | STRING
| "true" | "false" | "nil" | "self"
| "(" expression ")" | "super" "." IDENTIFIER ;
```