diff options
Diffstat (limited to 'src/elixir_math_parser.yrl')
| -rw-r--r-- | src/elixir_math_parser.yrl | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/src/elixir_math_parser.yrl b/src/elixir_math_parser.yrl index 635ebd3..a48b57b 100644 --- a/src/elixir_math_parser.yrl +++ b/src/elixir_math_parser.yrl @@ -4,15 +4,21 @@ Nonterminals statements expr exprs + % function specific + vars params . Terminals int float var break + % eval '+' '-' '*' '/' '!' '^' - '=' '(' ')' + % assign + '=' + % function specific + ':' ',' . Rootsymbol @@ -37,13 +43,22 @@ statements -> break : []. statement -> var '=' exprs : {assign, '$1', '$3'}. statement -> exprs : {eval, '$1'}. +statement -> var ':' vars '=' exprs : {assign_func, '$1', '$3', '$5'}. + +vars -> var : ['$1']. +vars -> var ',' vars : ['$1' | '$3']. -exprs -> expr : '$1'. +exprs -> expr : '$1'. exprs -> expr exprs : {mul_op, '$1', '$2'}. +params -> expr : ['$1']. +params -> expr ',' : ['$1']. +params -> expr ',' params : ['$1' | '$3']. + expr -> int : unwrap('$1'). expr -> float : unwrap('$1'). expr -> var : '$1'. + expr -> exprs '+' exprs : {add_op, '$1', '$3'}. expr -> exprs '-' exprs : {sub_op, '$1', '$3'}. expr -> exprs '*' exprs : {mul_op, '$1', '$3'}. @@ -53,6 +68,8 @@ expr -> exprs '^' exprs : {exp_op, '$1', '$3'}. expr -> '(' exprs ')' : '$2'. expr -> '-' exprs : {sub_op, {int, 0, 0}, '$2'}. +expr -> var '(' params ')' : {eval_func, '$1', '$3'}. + Erlang code. % 95 is the unicode of "_" |