diff options
Diffstat (limited to 'grammar.ebnf')
| -rw-r--r-- | grammar.ebnf | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/grammar.ebnf b/grammar.ebnf index 5340ba4..65cd74e 100644 --- a/grammar.ebnf +++ b/grammar.ebnf @@ -1,11 +1,19 @@ -Program ::= Statement+ +Program ::= Statement+ -Statement ::= (VariableStatement | PrintStatement | ReturnStatement) SEMICOLON +Statement ::= (AssignmentStatement | PrintStatement | FunctionCallStatement) SEMICOLON -VariableStatement ::= ("let" IDENTIFIER | IDENTIFIER) EQUALS Expression +AssignmentStatement ::= "let" IDENTIFIER EQUALS Expression -PrintStatement :== PRINT LPAREN Expression RPAREN +PrintStatement ::= PRINT LPAREN Expression RPAREN -- TODO: this won't be needed once functions support arguments -ReturnStatement :== RETURN Expression +FunctionCallStatement ::= IDENTIFIER LPAREN RPAREN -Expression :== NUMBER | IDENTIFIER | Expression + Expression +Expression ::= AdditiveExpression | FunctionDefinition + +AdditiveExpression ::= PrimaryExpression ("+" AdditiveExpression) + +PrimaryExpression ::= NUMBER | IDENTIFIER | FunctionCallStatement + +FunctionDefinition ::= ARROW LBRACE Statement* ReturnStatement RBRACE + +ReturnStatement ::= RETURN Expression SEMICOLON --TODO: I dont like this |