diff options
Diffstat (limited to 'grammar.ebnf')
| -rw-r--r-- | grammar.ebnf | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/grammar.ebnf b/grammar.ebnf index d99f268..c4c6914 100644 --- a/grammar.ebnf +++ b/grammar.ebnf @@ -18,14 +18,16 @@ Expression = AssignmentExpression; (* Expressions affected by precedence*) (* NOTE: Only allow IDENTIFIERs and their fields as the LValue for now. *) -AssignmentExpression = IDENTIFIER {"." IDENTIFIER} ("=" | ":=") AssignmentExpression | TermExpression; +AssignmentExpression = IDENTIFIER {"." IDENTIFIER} ("=" | ":=") AssignmentExpression | EqualityExpression; +EqualityExpression = ComparisonExpression { ("==" | "!=") ComparisonExpression }; +ComparisonExpression = TermExpression { ("<" | "<=" | ">" | ">=") TermExpression }; TermExpression = FactorExpression { ("+" | "-") FactorExpression }; FactorExpression = UnaryExpression { ("*" | "/") UnaryExpression }; UnaryExpression = ( "-" | "!" ) UnaryExpression | UnitExpression ; (* Unaffected Expressions *) -UnitExpression = FLOAT | INT | STR | GroupExpression | BlockExpression | FnExpression | TypeExpression | FormExpression | IfExpression; +UnitExpression = FLOAT | INT | STR | TRUE | FALSE |GroupExpression | BlockExpression | FnExpression | TypeExpression | FormExpression | IfExpression; GroupExpression = "(" Expression ")"; BlockExpression = Block; |