diff --git a/Wyst.g4 b/Wyst.g4
index 9fa5ccc..fc4f022 100644
--- a/Wyst.g4
+++ b/Wyst.g4
@@ -3,18 +3,23 @@ grammar Wyst;
 WS: [ \t\r\n]+ -> skip;
 NUMBER: [1-9][0-9]* | '0';
 HEX: '0x' [a-fA-F0-9]*;
-IDENTIFIER: [a-zA-Z_] ([a-zA-Z0-9] | '::')*;
+IDENTIFIER: [a-zA-Z_] ([a-zA-Z0-9_] | '::')*;
 MATH: '+' | '-' | '*' | '/';
 fragment ESC: '\\' ['"\\] ;
 STRING: '"' (ESC | ~["\\])* '"';
 round_def: '(' (var_def (',' var_def)* ','?)? ')';
+round_call: '(' (expr (',' expr)* ','?)? ')';
+fn_call: IDENTIFIER round_call;
 func_def: IDENTIFIER IDENTIFIER round_def code_block;
 var_def: IDENTIFIER IDENTIFIER;
 var_def_set: var_def '=' expr;
+call_tree: (fn_call|IDENTIFIER) ('.' (fn_call|IDENTIFIER))*;
 asm: '%' IDENTIFIER expr (',' expr)* ';';
 
 expr:
-    (   NUMBER |
+    (
+        call_tree |
+        NUMBER |
         HEX |
         IDENTIFIER |
         STRING
diff --git a/parser/Wyst.interp b/parser/Wyst.interp
index 72adc43..111c50c 100644
--- a/parser/Wyst.interp
+++ b/parser/Wyst.interp
@@ -4,6 +4,7 @@ null
 ','
 ')'
 '='
+'.'
 '%'
 ';'
 '{'
@@ -25,6 +26,7 @@ null
 null
 null
 null
+null
 WS
 NUMBER
 HEX
@@ -34,9 +36,12 @@ STRING
 
 rule names:
 round_def
+round_call
+fn_call
 func_def
 var_def
 var_def_set
+call_tree
 asm
 expr
 code_block
@@ -44,4 +49,4 @@ top
 
 
 atn:
-[4, 1, 14, 87, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 1, 0, 1, 0, 1, 0, 1, 0, 5, 0, 21, 8, 0, 10, 0, 12, 0, 24, 9, 0, 1, 0, 3, 0, 27, 8, 0, 3, 0, 29, 8, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 3, 1, 3, 1, 3, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 5, 4, 50, 8, 4, 10, 4, 12, 4, 53, 9, 4, 1, 4, 1, 4, 1, 5, 1, 5, 1, 5, 5, 5, 60, 8, 5, 10, 5, 12, 5, 63, 9, 5, 1, 6, 1, 6, 1, 6, 1, 6, 3, 6, 69, 8, 6, 1, 6, 1, 6, 5, 6, 73, 8, 6, 10, 6, 12, 6, 76, 9, 6, 1, 6, 1, 6, 1, 7, 1, 7, 5, 7, 82, 8, 7, 10, 7, 12, 7, 85, 9, 7, 1, 7, 0, 0, 8, 0, 2, 4, 6, 8, 10, 12, 14, 0, 1, 2, 0, 10, 12, 14, 14, 88, 0, 16, 1, 0, 0, 0, 2, 32, 1, 0, 0, 0, 4, 37, 1, 0, 0, 0, 6, 40, 1, 0, 0, 0, 8, 44, 1, 0, 0, 0, 10, 56, 1, 0, 0, 0, 12, 64, 1, 0, 0, 0, 14, 83, 1, 0, 0, 0, 16, 28, 5, 1, 0, 0, 17, 22, 3, 4, 2, 0, 18, 19, 5, 2, 0, 0, 19, 21, 3, 4, 2, 0, 20, 18, 1, 0, 0, 0, 21, 24, 1, 0, 0, 0, 22, 20, 1, 0, 0, 0, 22, 23, 1, 0, 0, 0, 23, 26, 1, 0, 0, 0, 24, 22, 1, 0, 0, 0, 25, 27, 5, 2, 0, 0, 26, 25, 1, 0, 0, 0, 26, 27, 1, 0, 0, 0, 27, 29, 1, 0, 0, 0, 28, 17, 1, 0, 0, 0, 28, 29, 1, 0, 0, 0, 29, 30, 1, 0, 0, 0, 30, 31, 5, 3, 0, 0, 31, 1, 1, 0, 0, 0, 32, 33, 5, 12, 0, 0, 33, 34, 5, 12, 0, 0, 34, 35, 3, 0, 0, 0, 35, 36, 3, 12, 6, 0, 36, 3, 1, 0, 0, 0, 37, 38, 5, 12, 0, 0, 38, 39, 5, 12, 0, 0, 39, 5, 1, 0, 0, 0, 40, 41, 3, 4, 2, 0, 41, 42, 5, 4, 0, 0, 42, 43, 3, 10, 5, 0, 43, 7, 1, 0, 0, 0, 44, 45, 5, 5, 0, 0, 45, 46, 5, 12, 0, 0, 46, 51, 3, 10, 5, 0, 47, 48, 5, 2, 0, 0, 48, 50, 3, 10, 5, 0, 49, 47, 1, 0, 0, 0, 50, 53, 1, 0, 0, 0, 51, 49, 1, 0, 0, 0, 51, 52, 1, 0, 0, 0, 52, 54, 1, 0, 0, 0, 53, 51, 1, 0, 0, 0, 54, 55, 5, 6, 0, 0, 55, 9, 1, 0, 0, 0, 56, 61, 7, 0, 0, 0, 57, 58, 5, 13, 0, 0, 58, 60, 3, 10, 5, 0, 59, 57, 1, 0, 0, 0, 60, 63, 1, 0, 0, 0, 61, 59, 1, 0, 0, 0, 61, 62, 1, 0, 0, 0, 62, 11, 1, 0, 0, 0, 63, 61, 1, 0, 0, 0, 64, 74, 5, 7, 0, 0, 65, 69, 3, 10, 5, 0, 66, 69, 3, 4, 2, 0, 67, 69, 3, 6, 3, 0, 68, 65, 1, 0, 0, 0, 68, 66, 1, 0, 0, 0, 68, 67, 1, 0, 0, 0, 69, 70, 1, 0, 0, 0, 70, 71, 5, 6, 0, 0, 71, 73, 1, 0, 0, 0, 72, 68, 1, 0, 0, 0, 73, 76, 1, 0, 0, 0, 74, 72, 1, 0, 0, 0, 74, 75, 1, 0, 0, 0, 75, 77, 1, 0, 0, 0, 76, 74, 1, 0, 0, 0, 77, 78, 5, 8, 0, 0, 78, 13, 1, 0, 0, 0, 79, 82, 3, 8, 4, 0, 80, 82, 3, 2, 1, 0, 81, 79, 1, 0, 0, 0, 81, 80, 1, 0, 0, 0, 82, 85, 1, 0, 0, 0, 83, 81, 1, 0, 0, 0, 83, 84, 1, 0, 0, 0, 84, 15, 1, 0, 0, 0, 85, 83, 1, 0, 0, 0, 9, 22, 26, 28, 51, 61, 68, 74, 81, 83]
\ No newline at end of file
+[4, 1, 15, 132, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, 10, 7, 10, 1, 0, 1, 0, 1, 0, 1, 0, 5, 0, 27, 8, 0, 10, 0, 12, 0, 30, 9, 0, 1, 0, 3, 0, 33, 8, 0, 3, 0, 35, 8, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 5, 1, 43, 8, 1, 10, 1, 12, 1, 46, 9, 1, 1, 1, 3, 1, 49, 8, 1, 3, 1, 51, 8, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 4, 1, 4, 1, 4, 1, 5, 1, 5, 1, 5, 1, 5, 1, 6, 1, 6, 3, 6, 72, 8, 6, 1, 6, 1, 6, 1, 6, 3, 6, 77, 8, 6, 5, 6, 79, 8, 6, 10, 6, 12, 6, 82, 9, 6, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 5, 7, 89, 8, 7, 10, 7, 12, 7, 92, 9, 7, 1, 7, 1, 7, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 3, 8, 101, 8, 8, 1, 8, 1, 8, 5, 8, 105, 8, 8, 10, 8, 12, 8, 108, 9, 8, 1, 9, 1, 9, 1, 9, 1, 9, 3, 9, 114, 8, 9, 1, 9, 1, 9, 5, 9, 118, 8, 9, 10, 9, 12, 9, 121, 9, 9, 1, 9, 1, 9, 1, 10, 1, 10, 5, 10, 127, 8, 10, 10, 10, 12, 10, 130, 9, 10, 1, 10, 0, 0, 11, 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 0, 0, 140, 0, 22, 1, 0, 0, 0, 2, 38, 1, 0, 0, 0, 4, 54, 1, 0, 0, 0, 6, 57, 1, 0, 0, 0, 8, 62, 1, 0, 0, 0, 10, 65, 1, 0, 0, 0, 12, 71, 1, 0, 0, 0, 14, 83, 1, 0, 0, 0, 16, 100, 1, 0, 0, 0, 18, 109, 1, 0, 0, 0, 20, 128, 1, 0, 0, 0, 22, 34, 5, 1, 0, 0, 23, 28, 3, 8, 4, 0, 24, 25, 5, 2, 0, 0, 25, 27, 3, 8, 4, 0, 26, 24, 1, 0, 0, 0, 27, 30, 1, 0, 0, 0, 28, 26, 1, 0, 0, 0, 28, 29, 1, 0, 0, 0, 29, 32, 1, 0, 0, 0, 30, 28, 1, 0, 0, 0, 31, 33, 5, 2, 0, 0, 32, 31, 1, 0, 0, 0, 32, 33, 1, 0, 0, 0, 33, 35, 1, 0, 0, 0, 34, 23, 1, 0, 0, 0, 34, 35, 1, 0, 0, 0, 35, 36, 1, 0, 0, 0, 36, 37, 5, 3, 0, 0, 37, 1, 1, 0, 0, 0, 38, 50, 5, 1, 0, 0, 39, 44, 3, 16, 8, 0, 40, 41, 5, 2, 0, 0, 41, 43, 3, 16, 8, 0, 42, 40, 1, 0, 0, 0, 43, 46, 1, 0, 0, 0, 44, 42, 1, 0, 0, 0, 44, 45, 1, 0, 0, 0, 45, 48, 1, 0, 0, 0, 46, 44, 1, 0, 0, 0, 47, 49, 5, 2, 0, 0, 48, 47, 1, 0, 0, 0, 48, 49, 1, 0, 0, 0, 49, 51, 1, 0, 0, 0, 50, 39, 1, 0, 0, 0, 50, 51, 1, 0, 0, 0, 51, 52, 1, 0, 0, 0, 52, 53, 5, 3, 0, 0, 53, 3, 1, 0, 0, 0, 54, 55, 5, 13, 0, 0, 55, 56, 3, 2, 1, 0, 56, 5, 1, 0, 0, 0, 57, 58, 5, 13, 0, 0, 58, 59, 5, 13, 0, 0, 59, 60, 3, 0, 0, 0, 60, 61, 3, 18, 9, 0, 61, 7, 1, 0, 0, 0, 62, 63, 5, 13, 0, 0, 63, 64, 5, 13, 0, 0, 64, 9, 1, 0, 0, 0, 65, 66, 3, 8, 4, 0, 66, 67, 5, 4, 0, 0, 67, 68, 3, 16, 8, 0, 68, 11, 1, 0, 0, 0, 69, 72, 3, 4, 2, 0, 70, 72, 5, 13, 0, 0, 71, 69, 1, 0, 0, 0, 71, 70, 1, 0, 0, 0, 72, 80, 1, 0, 0, 0, 73, 76, 5, 5, 0, 0, 74, 77, 3, 4, 2, 0, 75, 77, 5, 13, 0, 0, 76, 74, 1, 0, 0, 0, 76, 75, 1, 0, 0, 0, 77, 79, 1, 0, 0, 0, 78, 73, 1, 0, 0, 0, 79, 82, 1, 0, 0, 0, 80, 78, 1, 0, 0, 0, 80, 81, 1, 0, 0, 0, 81, 13, 1, 0, 0, 0, 82, 80, 1, 0, 0, 0, 83, 84, 5, 6, 0, 0, 84, 85, 5, 13, 0, 0, 85, 90, 3, 16, 8, 0, 86, 87, 5, 2, 0, 0, 87, 89, 3, 16, 8, 0, 88, 86, 1, 0, 0, 0, 89, 92, 1, 0, 0, 0, 90, 88, 1, 0, 0, 0, 90, 91, 1, 0, 0, 0, 91, 93, 1, 0, 0, 0, 92, 90, 1, 0, 0, 0, 93, 94, 5, 7, 0, 0, 94, 15, 1, 0, 0, 0, 95, 101, 3, 12, 6, 0, 96, 101, 5, 11, 0, 0, 97, 101, 5, 12, 0, 0, 98, 101, 5, 13, 0, 0, 99, 101, 5, 15, 0, 0, 100, 95, 1, 0, 0, 0, 100, 96, 1, 0, 0, 0, 100, 97, 1, 0, 0, 0, 100, 98, 1, 0, 0, 0, 100, 99, 1, 0, 0, 0, 101, 106, 1, 0, 0, 0, 102, 103, 5, 14, 0, 0, 103, 105, 3, 16, 8, 0, 104, 102, 1, 0, 0, 0, 105, 108, 1, 0, 0, 0, 106, 104, 1, 0, 0, 0, 106, 107, 1, 0, 0, 0, 107, 17, 1, 0, 0, 0, 108, 106, 1, 0, 0, 0, 109, 119, 5, 8, 0, 0, 110, 114, 3, 16, 8, 0, 111, 114, 3, 8, 4, 0, 112, 114, 3, 10, 5, 0, 113, 110, 1, 0, 0, 0, 113, 111, 1, 0, 0, 0, 113, 112, 1, 0, 0, 0, 114, 115, 1, 0, 0, 0, 115, 116, 5, 7, 0, 0, 116, 118, 1, 0, 0, 0, 117, 113, 1, 0, 0, 0, 118, 121, 1, 0, 0, 0, 119, 117, 1, 0, 0, 0, 119, 120, 1, 0, 0, 0, 120, 122, 1, 0, 0, 0, 121, 119, 1, 0, 0, 0, 122, 123, 5, 9, 0, 0, 123, 19, 1, 0, 0, 0, 124, 127, 3, 14, 7, 0, 125, 127, 3, 6, 3, 0, 126, 124, 1, 0, 0, 0, 126, 125, 1, 0, 0, 0, 127, 130, 1, 0, 0, 0, 128, 126, 1, 0, 0, 0, 128, 129, 1, 0, 0, 0, 129, 21, 1, 0, 0, 0, 130, 128, 1, 0, 0, 0, 16, 28, 32, 34, 44, 48, 50, 71, 76, 80, 90, 100, 106, 113, 119, 126, 128]
\ No newline at end of file
diff --git a/parser/Wyst.tokens b/parser/Wyst.tokens
index 3dc2b72..f26bf47 100644
--- a/parser/Wyst.tokens
+++ b/parser/Wyst.tokens
@@ -6,17 +6,19 @@ T__4=5
 T__5=6
 T__6=7
 T__7=8
-WS=9
-NUMBER=10
-HEX=11
-IDENTIFIER=12
-MATH=13
-STRING=14
+T__8=9
+WS=10
+NUMBER=11
+HEX=12
+IDENTIFIER=13
+MATH=14
+STRING=15
 '('=1
 ','=2
 ')'=3
 '='=4
-'%'=5
-';'=6
-'{'=7
-'}'=8
+'.'=5
+'%'=6
+';'=7
+'{'=8
+'}'=9
diff --git a/parser/WystLexer.interp b/parser/WystLexer.interp
index bec247b..43a845f 100644
--- a/parser/WystLexer.interp
+++ b/parser/WystLexer.interp
@@ -4,6 +4,7 @@ null
 ','
 ')'
 '='
+'.'
 '%'
 ';'
 '{'
@@ -25,6 +26,7 @@ null
 null
 null
 null
+null
 WS
 NUMBER
 HEX
@@ -41,6 +43,7 @@ T__4
 T__5
 T__6
 T__7
+T__8
 WS
 NUMBER
 HEX
@@ -57,4 +60,4 @@ mode names:
 DEFAULT_MODE
 
 atn:
-[4, 0, 14, 97, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, 10, 7, 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 1, 0, 1, 0, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 1, 3, 1, 4, 1, 4, 1, 5, 1, 5, 1, 6, 1, 6, 1, 7, 1, 7, 1, 8, 4, 8, 49, 8, 8, 11, 8, 12, 8, 50, 1, 8, 1, 8, 1, 9, 1, 9, 5, 9, 57, 8, 9, 10, 9, 12, 9, 60, 9, 9, 1, 9, 3, 9, 63, 8, 9, 1, 10, 1, 10, 1, 10, 1, 10, 5, 10, 69, 8, 10, 10, 10, 12, 10, 72, 9, 10, 1, 11, 1, 11, 1, 11, 1, 11, 5, 11, 78, 8, 11, 10, 11, 12, 11, 81, 9, 11, 1, 12, 1, 12, 1, 13, 1, 13, 1, 13, 1, 14, 1, 14, 1, 14, 5, 14, 91, 8, 14, 10, 14, 12, 14, 94, 9, 14, 1, 14, 1, 14, 0, 0, 15, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, 13, 7, 15, 8, 17, 9, 19, 10, 21, 11, 23, 12, 25, 13, 27, 0, 29, 14, 1, 0, 9, 3, 0, 9, 10, 13, 13, 32, 32, 1, 0, 49, 57, 1, 0, 48, 57, 3, 0, 48, 57, 65, 70, 97, 102, 3, 0, 65, 90, 95, 95, 97, 122, 3, 0, 48, 57, 65, 90, 97, 122, 3, 0, 42, 43, 45, 45, 47, 47, 3, 0, 34, 34, 39, 39, 92, 92, 2, 0, 34, 34, 92, 92, 103, 0, 1, 1, 0, 0, 0, 0, 3, 1, 0, 0, 0, 0, 5, 1, 0, 0, 0, 0, 7, 1, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 11, 1, 0, 0, 0, 0, 13, 1, 0, 0, 0, 0, 15, 1, 0, 0, 0, 0, 17, 1, 0, 0, 0, 0, 19, 1, 0, 0, 0, 0, 21, 1, 0, 0, 0, 0, 23, 1, 0, 0, 0, 0, 25, 1, 0, 0, 0, 0, 29, 1, 0, 0, 0, 1, 31, 1, 0, 0, 0, 3, 33, 1, 0, 0, 0, 5, 35, 1, 0, 0, 0, 7, 37, 1, 0, 0, 0, 9, 39, 1, 0, 0, 0, 11, 41, 1, 0, 0, 0, 13, 43, 1, 0, 0, 0, 15, 45, 1, 0, 0, 0, 17, 48, 1, 0, 0, 0, 19, 62, 1, 0, 0, 0, 21, 64, 1, 0, 0, 0, 23, 73, 1, 0, 0, 0, 25, 82, 1, 0, 0, 0, 27, 84, 1, 0, 0, 0, 29, 87, 1, 0, 0, 0, 31, 32, 5, 40, 0, 0, 32, 2, 1, 0, 0, 0, 33, 34, 5, 44, 0, 0, 34, 4, 1, 0, 0, 0, 35, 36, 5, 41, 0, 0, 36, 6, 1, 0, 0, 0, 37, 38, 5, 61, 0, 0, 38, 8, 1, 0, 0, 0, 39, 40, 5, 37, 0, 0, 40, 10, 1, 0, 0, 0, 41, 42, 5, 59, 0, 0, 42, 12, 1, 0, 0, 0, 43, 44, 5, 123, 0, 0, 44, 14, 1, 0, 0, 0, 45, 46, 5, 125, 0, 0, 46, 16, 1, 0, 0, 0, 47, 49, 7, 0, 0, 0, 48, 47, 1, 0, 0, 0, 49, 50, 1, 0, 0, 0, 50, 48, 1, 0, 0, 0, 50, 51, 1, 0, 0, 0, 51, 52, 1, 0, 0, 0, 52, 53, 6, 8, 0, 0, 53, 18, 1, 0, 0, 0, 54, 58, 7, 1, 0, 0, 55, 57, 7, 2, 0, 0, 56, 55, 1, 0, 0, 0, 57, 60, 1, 0, 0, 0, 58, 56, 1, 0, 0, 0, 58, 59, 1, 0, 0, 0, 59, 63, 1, 0, 0, 0, 60, 58, 1, 0, 0, 0, 61, 63, 5, 48, 0, 0, 62, 54, 1, 0, 0, 0, 62, 61, 1, 0, 0, 0, 63, 20, 1, 0, 0, 0, 64, 65, 5, 48, 0, 0, 65, 66, 5, 120, 0, 0, 66, 70, 1, 0, 0, 0, 67, 69, 7, 3, 0, 0, 68, 67, 1, 0, 0, 0, 69, 72, 1, 0, 0, 0, 70, 68, 1, 0, 0, 0, 70, 71, 1, 0, 0, 0, 71, 22, 1, 0, 0, 0, 72, 70, 1, 0, 0, 0, 73, 79, 7, 4, 0, 0, 74, 78, 7, 5, 0, 0, 75, 76, 5, 58, 0, 0, 76, 78, 5, 58, 0, 0, 77, 74, 1, 0, 0, 0, 77, 75, 1, 0, 0, 0, 78, 81, 1, 0, 0, 0, 79, 77, 1, 0, 0, 0, 79, 80, 1, 0, 0, 0, 80, 24, 1, 0, 0, 0, 81, 79, 1, 0, 0, 0, 82, 83, 7, 6, 0, 0, 83, 26, 1, 0, 0, 0, 84, 85, 5, 92, 0, 0, 85, 86, 7, 7, 0, 0, 86, 28, 1, 0, 0, 0, 87, 92, 5, 34, 0, 0, 88, 91, 3, 27, 13, 0, 89, 91, 8, 8, 0, 0, 90, 88, 1, 0, 0, 0, 90, 89, 1, 0, 0, 0, 91, 94, 1, 0, 0, 0, 92, 90, 1, 0, 0, 0, 92, 93, 1, 0, 0, 0, 93, 95, 1, 0, 0, 0, 94, 92, 1, 0, 0, 0, 95, 96, 5, 34, 0, 0, 96, 30, 1, 0, 0, 0, 9, 0, 50, 58, 62, 70, 77, 79, 90, 92, 1, 6, 0, 0]
\ No newline at end of file
+[4, 0, 15, 101, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, 10, 7, 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 2, 15, 7, 15, 1, 0, 1, 0, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 1, 3, 1, 4, 1, 4, 1, 5, 1, 5, 1, 6, 1, 6, 1, 7, 1, 7, 1, 8, 1, 8, 1, 9, 4, 9, 53, 8, 9, 11, 9, 12, 9, 54, 1, 9, 1, 9, 1, 10, 1, 10, 5, 10, 61, 8, 10, 10, 10, 12, 10, 64, 9, 10, 1, 10, 3, 10, 67, 8, 10, 1, 11, 1, 11, 1, 11, 1, 11, 5, 11, 73, 8, 11, 10, 11, 12, 11, 76, 9, 11, 1, 12, 1, 12, 1, 12, 1, 12, 5, 12, 82, 8, 12, 10, 12, 12, 12, 85, 9, 12, 1, 13, 1, 13, 1, 14, 1, 14, 1, 14, 1, 15, 1, 15, 1, 15, 5, 15, 95, 8, 15, 10, 15, 12, 15, 98, 9, 15, 1, 15, 1, 15, 0, 0, 16, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, 13, 7, 15, 8, 17, 9, 19, 10, 21, 11, 23, 12, 25, 13, 27, 14, 29, 0, 31, 15, 1, 0, 9, 3, 0, 9, 10, 13, 13, 32, 32, 1, 0, 49, 57, 1, 0, 48, 57, 3, 0, 48, 57, 65, 70, 97, 102, 3, 0, 65, 90, 95, 95, 97, 122, 4, 0, 48, 57, 65, 90, 95, 95, 97, 122, 3, 0, 42, 43, 45, 45, 47, 47, 3, 0, 34, 34, 39, 39, 92, 92, 2, 0, 34, 34, 92, 92, 107, 0, 1, 1, 0, 0, 0, 0, 3, 1, 0, 0, 0, 0, 5, 1, 0, 0, 0, 0, 7, 1, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 11, 1, 0, 0, 0, 0, 13, 1, 0, 0, 0, 0, 15, 1, 0, 0, 0, 0, 17, 1, 0, 0, 0, 0, 19, 1, 0, 0, 0, 0, 21, 1, 0, 0, 0, 0, 23, 1, 0, 0, 0, 0, 25, 1, 0, 0, 0, 0, 27, 1, 0, 0, 0, 0, 31, 1, 0, 0, 0, 1, 33, 1, 0, 0, 0, 3, 35, 1, 0, 0, 0, 5, 37, 1, 0, 0, 0, 7, 39, 1, 0, 0, 0, 9, 41, 1, 0, 0, 0, 11, 43, 1, 0, 0, 0, 13, 45, 1, 0, 0, 0, 15, 47, 1, 0, 0, 0, 17, 49, 1, 0, 0, 0, 19, 52, 1, 0, 0, 0, 21, 66, 1, 0, 0, 0, 23, 68, 1, 0, 0, 0, 25, 77, 1, 0, 0, 0, 27, 86, 1, 0, 0, 0, 29, 88, 1, 0, 0, 0, 31, 91, 1, 0, 0, 0, 33, 34, 5, 40, 0, 0, 34, 2, 1, 0, 0, 0, 35, 36, 5, 44, 0, 0, 36, 4, 1, 0, 0, 0, 37, 38, 5, 41, 0, 0, 38, 6, 1, 0, 0, 0, 39, 40, 5, 61, 0, 0, 40, 8, 1, 0, 0, 0, 41, 42, 5, 46, 0, 0, 42, 10, 1, 0, 0, 0, 43, 44, 5, 37, 0, 0, 44, 12, 1, 0, 0, 0, 45, 46, 5, 59, 0, 0, 46, 14, 1, 0, 0, 0, 47, 48, 5, 123, 0, 0, 48, 16, 1, 0, 0, 0, 49, 50, 5, 125, 0, 0, 50, 18, 1, 0, 0, 0, 51, 53, 7, 0, 0, 0, 52, 51, 1, 0, 0, 0, 53, 54, 1, 0, 0, 0, 54, 52, 1, 0, 0, 0, 54, 55, 1, 0, 0, 0, 55, 56, 1, 0, 0, 0, 56, 57, 6, 9, 0, 0, 57, 20, 1, 0, 0, 0, 58, 62, 7, 1, 0, 0, 59, 61, 7, 2, 0, 0, 60, 59, 1, 0, 0, 0, 61, 64, 1, 0, 0, 0, 62, 60, 1, 0, 0, 0, 62, 63, 1, 0, 0, 0, 63, 67, 1, 0, 0, 0, 64, 62, 1, 0, 0, 0, 65, 67, 5, 48, 0, 0, 66, 58, 1, 0, 0, 0, 66, 65, 1, 0, 0, 0, 67, 22, 1, 0, 0, 0, 68, 69, 5, 48, 0, 0, 69, 70, 5, 120, 0, 0, 70, 74, 1, 0, 0, 0, 71, 73, 7, 3, 0, 0, 72, 71, 1, 0, 0, 0, 73, 76, 1, 0, 0, 0, 74, 72, 1, 0, 0, 0, 74, 75, 1, 0, 0, 0, 75, 24, 1, 0, 0, 0, 76, 74, 1, 0, 0, 0, 77, 83, 7, 4, 0, 0, 78, 82, 7, 5, 0, 0, 79, 80, 5, 58, 0, 0, 80, 82, 5, 58, 0, 0, 81, 78, 1, 0, 0, 0, 81, 79, 1, 0, 0, 0, 82, 85, 1, 0, 0, 0, 83, 81, 1, 0, 0, 0, 83, 84, 1, 0, 0, 0, 84, 26, 1, 0, 0, 0, 85, 83, 1, 0, 0, 0, 86, 87, 7, 6, 0, 0, 87, 28, 1, 0, 0, 0, 88, 89, 5, 92, 0, 0, 89, 90, 7, 7, 0, 0, 90, 30, 1, 0, 0, 0, 91, 96, 5, 34, 0, 0, 92, 95, 3, 29, 14, 0, 93, 95, 8, 8, 0, 0, 94, 92, 1, 0, 0, 0, 94, 93, 1, 0, 0, 0, 95, 98, 1, 0, 0, 0, 96, 94, 1, 0, 0, 0, 96, 97, 1, 0, 0, 0, 97, 99, 1, 0, 0, 0, 98, 96, 1, 0, 0, 0, 99, 100, 5, 34, 0, 0, 100, 32, 1, 0, 0, 0, 9, 0, 54, 62, 66, 74, 81, 83, 94, 96, 1, 6, 0, 0]
\ No newline at end of file
diff --git a/parser/WystLexer.tokens b/parser/WystLexer.tokens
index 3dc2b72..f26bf47 100644
--- a/parser/WystLexer.tokens
+++ b/parser/WystLexer.tokens
@@ -6,17 +6,19 @@ T__4=5
 T__5=6
 T__6=7
 T__7=8
-WS=9
-NUMBER=10
-HEX=11
-IDENTIFIER=12
-MATH=13
-STRING=14
+T__8=9
+WS=10
+NUMBER=11
+HEX=12
+IDENTIFIER=13
+MATH=14
+STRING=15
 '('=1
 ','=2
 ')'=3
 '='=4
-'%'=5
-';'=6
-'{'=7
-'}'=8
+'.'=5
+'%'=6
+';'=7
+'{'=8
+'}'=9
diff --git a/parser/wyst_base_listener.go b/parser/wyst_base_listener.go
index 12111de..48a555b 100644
--- a/parser/wyst_base_listener.go
+++ b/parser/wyst_base_listener.go
@@ -27,6 +27,18 @@ func (s *BaseWystListener) EnterRound_def(ctx *Round_defContext) {}
 // ExitRound_def is called when production round_def is exited.
 func (s *BaseWystListener) ExitRound_def(ctx *Round_defContext) {}
 
+// EnterRound_call is called when production round_call is entered.
+func (s *BaseWystListener) EnterRound_call(ctx *Round_callContext) {}
+
+// ExitRound_call is called when production round_call is exited.
+func (s *BaseWystListener) ExitRound_call(ctx *Round_callContext) {}
+
+// EnterFn_call is called when production fn_call is entered.
+func (s *BaseWystListener) EnterFn_call(ctx *Fn_callContext) {}
+
+// ExitFn_call is called when production fn_call is exited.
+func (s *BaseWystListener) ExitFn_call(ctx *Fn_callContext) {}
+
 // EnterFunc_def is called when production func_def is entered.
 func (s *BaseWystListener) EnterFunc_def(ctx *Func_defContext) {}
 
@@ -45,6 +57,12 @@ func (s *BaseWystListener) EnterVar_def_set(ctx *Var_def_setContext) {}
 // ExitVar_def_set is called when production var_def_set is exited.
 func (s *BaseWystListener) ExitVar_def_set(ctx *Var_def_setContext) {}
 
+// EnterCall_tree is called when production call_tree is entered.
+func (s *BaseWystListener) EnterCall_tree(ctx *Call_treeContext) {}
+
+// ExitCall_tree is called when production call_tree is exited.
+func (s *BaseWystListener) ExitCall_tree(ctx *Call_treeContext) {}
+
 // EnterAsm is called when production asm is entered.
 func (s *BaseWystListener) EnterAsm(ctx *AsmContext) {}
 
diff --git a/parser/wyst_lexer.go b/parser/wyst_lexer.go
index 7396b9e..832fe49 100644
--- a/parser/wyst_lexer.go
+++ b/parser/wyst_lexer.go
@@ -43,62 +43,64 @@ func wystlexerLexerInit() {
 		"DEFAULT_MODE",
 	}
 	staticData.LiteralNames = []string{
-		"", "'('", "','", "')'", "'='", "'%'", "';'", "'{'", "'}'",
+		"", "'('", "','", "')'", "'='", "'.'", "'%'", "';'", "'{'", "'}'",
 	}
 	staticData.SymbolicNames = []string{
-		"", "", "", "", "", "", "", "", "", "WS", "NUMBER", "HEX", "IDENTIFIER",
+		"", "", "", "", "", "", "", "", "", "", "WS", "NUMBER", "HEX", "IDENTIFIER",
 		"MATH", "STRING",
 	}
 	staticData.RuleNames = []string{
-		"T__0", "T__1", "T__2", "T__3", "T__4", "T__5", "T__6", "T__7", "WS",
-		"NUMBER", "HEX", "IDENTIFIER", "MATH", "ESC", "STRING",
+		"T__0", "T__1", "T__2", "T__3", "T__4", "T__5", "T__6", "T__7", "T__8",
+		"WS", "NUMBER", "HEX", "IDENTIFIER", "MATH", "ESC", "STRING",
 	}
 	staticData.PredictionContextCache = antlr.NewPredictionContextCache()
 	staticData.serializedATN = []int32{
-		4, 0, 14, 97, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2,
+		4, 0, 15, 101, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2,
 		4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2,
-		10, 7, 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 1, 0,
-		1, 0, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 1, 3, 1, 4, 1, 4, 1, 5, 1, 5, 1, 6,
-		1, 6, 1, 7, 1, 7, 1, 8, 4, 8, 49, 8, 8, 11, 8, 12, 8, 50, 1, 8, 1, 8, 1,
-		9, 1, 9, 5, 9, 57, 8, 9, 10, 9, 12, 9, 60, 9, 9, 1, 9, 3, 9, 63, 8, 9,
-		1, 10, 1, 10, 1, 10, 1, 10, 5, 10, 69, 8, 10, 10, 10, 12, 10, 72, 9, 10,
-		1, 11, 1, 11, 1, 11, 1, 11, 5, 11, 78, 8, 11, 10, 11, 12, 11, 81, 9, 11,
-		1, 12, 1, 12, 1, 13, 1, 13, 1, 13, 1, 14, 1, 14, 1, 14, 5, 14, 91, 8, 14,
-		10, 14, 12, 14, 94, 9, 14, 1, 14, 1, 14, 0, 0, 15, 1, 1, 3, 2, 5, 3, 7,
-		4, 9, 5, 11, 6, 13, 7, 15, 8, 17, 9, 19, 10, 21, 11, 23, 12, 25, 13, 27,
-		0, 29, 14, 1, 0, 9, 3, 0, 9, 10, 13, 13, 32, 32, 1, 0, 49, 57, 1, 0, 48,
-		57, 3, 0, 48, 57, 65, 70, 97, 102, 3, 0, 65, 90, 95, 95, 97, 122, 3, 0,
-		48, 57, 65, 90, 97, 122, 3, 0, 42, 43, 45, 45, 47, 47, 3, 0, 34, 34, 39,
-		39, 92, 92, 2, 0, 34, 34, 92, 92, 103, 0, 1, 1, 0, 0, 0, 0, 3, 1, 0, 0,
-		0, 0, 5, 1, 0, 0, 0, 0, 7, 1, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 11, 1, 0, 0,
-		0, 0, 13, 1, 0, 0, 0, 0, 15, 1, 0, 0, 0, 0, 17, 1, 0, 0, 0, 0, 19, 1, 0,
-		0, 0, 0, 21, 1, 0, 0, 0, 0, 23, 1, 0, 0, 0, 0, 25, 1, 0, 0, 0, 0, 29, 1,
-		0, 0, 0, 1, 31, 1, 0, 0, 0, 3, 33, 1, 0, 0, 0, 5, 35, 1, 0, 0, 0, 7, 37,
-		1, 0, 0, 0, 9, 39, 1, 0, 0, 0, 11, 41, 1, 0, 0, 0, 13, 43, 1, 0, 0, 0,
-		15, 45, 1, 0, 0, 0, 17, 48, 1, 0, 0, 0, 19, 62, 1, 0, 0, 0, 21, 64, 1,
-		0, 0, 0, 23, 73, 1, 0, 0, 0, 25, 82, 1, 0, 0, 0, 27, 84, 1, 0, 0, 0, 29,
-		87, 1, 0, 0, 0, 31, 32, 5, 40, 0, 0, 32, 2, 1, 0, 0, 0, 33, 34, 5, 44,
-		0, 0, 34, 4, 1, 0, 0, 0, 35, 36, 5, 41, 0, 0, 36, 6, 1, 0, 0, 0, 37, 38,
-		5, 61, 0, 0, 38, 8, 1, 0, 0, 0, 39, 40, 5, 37, 0, 0, 40, 10, 1, 0, 0, 0,
-		41, 42, 5, 59, 0, 0, 42, 12, 1, 0, 0, 0, 43, 44, 5, 123, 0, 0, 44, 14,
-		1, 0, 0, 0, 45, 46, 5, 125, 0, 0, 46, 16, 1, 0, 0, 0, 47, 49, 7, 0, 0,
-		0, 48, 47, 1, 0, 0, 0, 49, 50, 1, 0, 0, 0, 50, 48, 1, 0, 0, 0, 50, 51,
-		1, 0, 0, 0, 51, 52, 1, 0, 0, 0, 52, 53, 6, 8, 0, 0, 53, 18, 1, 0, 0, 0,
-		54, 58, 7, 1, 0, 0, 55, 57, 7, 2, 0, 0, 56, 55, 1, 0, 0, 0, 57, 60, 1,
-		0, 0, 0, 58, 56, 1, 0, 0, 0, 58, 59, 1, 0, 0, 0, 59, 63, 1, 0, 0, 0, 60,
-		58, 1, 0, 0, 0, 61, 63, 5, 48, 0, 0, 62, 54, 1, 0, 0, 0, 62, 61, 1, 0,
-		0, 0, 63, 20, 1, 0, 0, 0, 64, 65, 5, 48, 0, 0, 65, 66, 5, 120, 0, 0, 66,
-		70, 1, 0, 0, 0, 67, 69, 7, 3, 0, 0, 68, 67, 1, 0, 0, 0, 69, 72, 1, 0, 0,
-		0, 70, 68, 1, 0, 0, 0, 70, 71, 1, 0, 0, 0, 71, 22, 1, 0, 0, 0, 72, 70,
-		1, 0, 0, 0, 73, 79, 7, 4, 0, 0, 74, 78, 7, 5, 0, 0, 75, 76, 5, 58, 0, 0,
-		76, 78, 5, 58, 0, 0, 77, 74, 1, 0, 0, 0, 77, 75, 1, 0, 0, 0, 78, 81, 1,
-		0, 0, 0, 79, 77, 1, 0, 0, 0, 79, 80, 1, 0, 0, 0, 80, 24, 1, 0, 0, 0, 81,
-		79, 1, 0, 0, 0, 82, 83, 7, 6, 0, 0, 83, 26, 1, 0, 0, 0, 84, 85, 5, 92,
-		0, 0, 85, 86, 7, 7, 0, 0, 86, 28, 1, 0, 0, 0, 87, 92, 5, 34, 0, 0, 88,
-		91, 3, 27, 13, 0, 89, 91, 8, 8, 0, 0, 90, 88, 1, 0, 0, 0, 90, 89, 1, 0,
-		0, 0, 91, 94, 1, 0, 0, 0, 92, 90, 1, 0, 0, 0, 92, 93, 1, 0, 0, 0, 93, 95,
-		1, 0, 0, 0, 94, 92, 1, 0, 0, 0, 95, 96, 5, 34, 0, 0, 96, 30, 1, 0, 0, 0,
-		9, 0, 50, 58, 62, 70, 77, 79, 90, 92, 1, 6, 0, 0,
+		10, 7, 10, 2, 11, 7, 11, 2, 12, 7, 12, 2, 13, 7, 13, 2, 14, 7, 14, 2, 15,
+		7, 15, 1, 0, 1, 0, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 1, 3, 1, 4, 1, 4, 1, 5,
+		1, 5, 1, 6, 1, 6, 1, 7, 1, 7, 1, 8, 1, 8, 1, 9, 4, 9, 53, 8, 9, 11, 9,
+		12, 9, 54, 1, 9, 1, 9, 1, 10, 1, 10, 5, 10, 61, 8, 10, 10, 10, 12, 10,
+		64, 9, 10, 1, 10, 3, 10, 67, 8, 10, 1, 11, 1, 11, 1, 11, 1, 11, 5, 11,
+		73, 8, 11, 10, 11, 12, 11, 76, 9, 11, 1, 12, 1, 12, 1, 12, 1, 12, 5, 12,
+		82, 8, 12, 10, 12, 12, 12, 85, 9, 12, 1, 13, 1, 13, 1, 14, 1, 14, 1, 14,
+		1, 15, 1, 15, 1, 15, 5, 15, 95, 8, 15, 10, 15, 12, 15, 98, 9, 15, 1, 15,
+		1, 15, 0, 0, 16, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, 13, 7, 15, 8, 17,
+		9, 19, 10, 21, 11, 23, 12, 25, 13, 27, 14, 29, 0, 31, 15, 1, 0, 9, 3, 0,
+		9, 10, 13, 13, 32, 32, 1, 0, 49, 57, 1, 0, 48, 57, 3, 0, 48, 57, 65, 70,
+		97, 102, 3, 0, 65, 90, 95, 95, 97, 122, 4, 0, 48, 57, 65, 90, 95, 95, 97,
+		122, 3, 0, 42, 43, 45, 45, 47, 47, 3, 0, 34, 34, 39, 39, 92, 92, 2, 0,
+		34, 34, 92, 92, 107, 0, 1, 1, 0, 0, 0, 0, 3, 1, 0, 0, 0, 0, 5, 1, 0, 0,
+		0, 0, 7, 1, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 11, 1, 0, 0, 0, 0, 13, 1, 0,
+		0, 0, 0, 15, 1, 0, 0, 0, 0, 17, 1, 0, 0, 0, 0, 19, 1, 0, 0, 0, 0, 21, 1,
+		0, 0, 0, 0, 23, 1, 0, 0, 0, 0, 25, 1, 0, 0, 0, 0, 27, 1, 0, 0, 0, 0, 31,
+		1, 0, 0, 0, 1, 33, 1, 0, 0, 0, 3, 35, 1, 0, 0, 0, 5, 37, 1, 0, 0, 0, 7,
+		39, 1, 0, 0, 0, 9, 41, 1, 0, 0, 0, 11, 43, 1, 0, 0, 0, 13, 45, 1, 0, 0,
+		0, 15, 47, 1, 0, 0, 0, 17, 49, 1, 0, 0, 0, 19, 52, 1, 0, 0, 0, 21, 66,
+		1, 0, 0, 0, 23, 68, 1, 0, 0, 0, 25, 77, 1, 0, 0, 0, 27, 86, 1, 0, 0, 0,
+		29, 88, 1, 0, 0, 0, 31, 91, 1, 0, 0, 0, 33, 34, 5, 40, 0, 0, 34, 2, 1,
+		0, 0, 0, 35, 36, 5, 44, 0, 0, 36, 4, 1, 0, 0, 0, 37, 38, 5, 41, 0, 0, 38,
+		6, 1, 0, 0, 0, 39, 40, 5, 61, 0, 0, 40, 8, 1, 0, 0, 0, 41, 42, 5, 46, 0,
+		0, 42, 10, 1, 0, 0, 0, 43, 44, 5, 37, 0, 0, 44, 12, 1, 0, 0, 0, 45, 46,
+		5, 59, 0, 0, 46, 14, 1, 0, 0, 0, 47, 48, 5, 123, 0, 0, 48, 16, 1, 0, 0,
+		0, 49, 50, 5, 125, 0, 0, 50, 18, 1, 0, 0, 0, 51, 53, 7, 0, 0, 0, 52, 51,
+		1, 0, 0, 0, 53, 54, 1, 0, 0, 0, 54, 52, 1, 0, 0, 0, 54, 55, 1, 0, 0, 0,
+		55, 56, 1, 0, 0, 0, 56, 57, 6, 9, 0, 0, 57, 20, 1, 0, 0, 0, 58, 62, 7,
+		1, 0, 0, 59, 61, 7, 2, 0, 0, 60, 59, 1, 0, 0, 0, 61, 64, 1, 0, 0, 0, 62,
+		60, 1, 0, 0, 0, 62, 63, 1, 0, 0, 0, 63, 67, 1, 0, 0, 0, 64, 62, 1, 0, 0,
+		0, 65, 67, 5, 48, 0, 0, 66, 58, 1, 0, 0, 0, 66, 65, 1, 0, 0, 0, 67, 22,
+		1, 0, 0, 0, 68, 69, 5, 48, 0, 0, 69, 70, 5, 120, 0, 0, 70, 74, 1, 0, 0,
+		0, 71, 73, 7, 3, 0, 0, 72, 71, 1, 0, 0, 0, 73, 76, 1, 0, 0, 0, 74, 72,
+		1, 0, 0, 0, 74, 75, 1, 0, 0, 0, 75, 24, 1, 0, 0, 0, 76, 74, 1, 0, 0, 0,
+		77, 83, 7, 4, 0, 0, 78, 82, 7, 5, 0, 0, 79, 80, 5, 58, 0, 0, 80, 82, 5,
+		58, 0, 0, 81, 78, 1, 0, 0, 0, 81, 79, 1, 0, 0, 0, 82, 85, 1, 0, 0, 0, 83,
+		81, 1, 0, 0, 0, 83, 84, 1, 0, 0, 0, 84, 26, 1, 0, 0, 0, 85, 83, 1, 0, 0,
+		0, 86, 87, 7, 6, 0, 0, 87, 28, 1, 0, 0, 0, 88, 89, 5, 92, 0, 0, 89, 90,
+		7, 7, 0, 0, 90, 30, 1, 0, 0, 0, 91, 96, 5, 34, 0, 0, 92, 95, 3, 29, 14,
+		0, 93, 95, 8, 8, 0, 0, 94, 92, 1, 0, 0, 0, 94, 93, 1, 0, 0, 0, 95, 98,
+		1, 0, 0, 0, 96, 94, 1, 0, 0, 0, 96, 97, 1, 0, 0, 0, 97, 99, 1, 0, 0, 0,
+		98, 96, 1, 0, 0, 0, 99, 100, 5, 34, 0, 0, 100, 32, 1, 0, 0, 0, 9, 0, 54,
+		62, 66, 74, 81, 83, 94, 96, 1, 6, 0, 0,
 	}
 	deserializer := antlr.NewATNDeserializer(nil)
 	staticData.atn = deserializer.Deserialize(staticData.serializedATN)
@@ -147,10 +149,11 @@ const (
 	WystLexerT__5       = 6
 	WystLexerT__6       = 7
 	WystLexerT__7       = 8
-	WystLexerWS         = 9
-	WystLexerNUMBER     = 10
-	WystLexerHEX        = 11
-	WystLexerIDENTIFIER = 12
-	WystLexerMATH       = 13
-	WystLexerSTRING     = 14
+	WystLexerT__8       = 9
+	WystLexerWS         = 10
+	WystLexerNUMBER     = 11
+	WystLexerHEX        = 12
+	WystLexerIDENTIFIER = 13
+	WystLexerMATH       = 14
+	WystLexerSTRING     = 15
 )
diff --git a/parser/wyst_listener.go b/parser/wyst_listener.go
index e05a5d9..e0e6e3f 100644
--- a/parser/wyst_listener.go
+++ b/parser/wyst_listener.go
@@ -11,6 +11,12 @@ type WystListener interface {
 	// EnterRound_def is called when entering the round_def production.
 	EnterRound_def(c *Round_defContext)
 
+	// EnterRound_call is called when entering the round_call production.
+	EnterRound_call(c *Round_callContext)
+
+	// EnterFn_call is called when entering the fn_call production.
+	EnterFn_call(c *Fn_callContext)
+
 	// EnterFunc_def is called when entering the func_def production.
 	EnterFunc_def(c *Func_defContext)
 
@@ -20,6 +26,9 @@ type WystListener interface {
 	// EnterVar_def_set is called when entering the var_def_set production.
 	EnterVar_def_set(c *Var_def_setContext)
 
+	// EnterCall_tree is called when entering the call_tree production.
+	EnterCall_tree(c *Call_treeContext)
+
 	// EnterAsm is called when entering the asm production.
 	EnterAsm(c *AsmContext)
 
@@ -35,6 +44,12 @@ type WystListener interface {
 	// ExitRound_def is called when exiting the round_def production.
 	ExitRound_def(c *Round_defContext)
 
+	// ExitRound_call is called when exiting the round_call production.
+	ExitRound_call(c *Round_callContext)
+
+	// ExitFn_call is called when exiting the fn_call production.
+	ExitFn_call(c *Fn_callContext)
+
 	// ExitFunc_def is called when exiting the func_def production.
 	ExitFunc_def(c *Func_defContext)
 
@@ -44,6 +59,9 @@ type WystListener interface {
 	// ExitVar_def_set is called when exiting the var_def_set production.
 	ExitVar_def_set(c *Var_def_setContext)
 
+	// ExitCall_tree is called when exiting the call_tree production.
+	ExitCall_tree(c *Call_treeContext)
+
 	// ExitAsm is called when exiting the asm production.
 	ExitAsm(c *AsmContext)
 
diff --git a/parser/wyst_parser.go b/parser/wyst_parser.go
index 60c32ea..76c5fe0 100644
--- a/parser/wyst_parser.go
+++ b/parser/wyst_parser.go
@@ -33,53 +33,73 @@ var WystParserStaticData struct {
 func wystParserInit() {
 	staticData := &WystParserStaticData
 	staticData.LiteralNames = []string{
-		"", "'('", "','", "')'", "'='", "'%'", "';'", "'{'", "'}'",
+		"", "'('", "','", "')'", "'='", "'.'", "'%'", "';'", "'{'", "'}'",
 	}
 	staticData.SymbolicNames = []string{
-		"", "", "", "", "", "", "", "", "", "WS", "NUMBER", "HEX", "IDENTIFIER",
+		"", "", "", "", "", "", "", "", "", "", "WS", "NUMBER", "HEX", "IDENTIFIER",
 		"MATH", "STRING",
 	}
 	staticData.RuleNames = []string{
-		"round_def", "func_def", "var_def", "var_def_set", "asm", "expr", "code_block",
-		"top",
+		"round_def", "round_call", "fn_call", "func_def", "var_def", "var_def_set",
+		"call_tree", "asm", "expr", "code_block", "top",
 	}
 	staticData.PredictionContextCache = antlr.NewPredictionContextCache()
 	staticData.serializedATN = []int32{
-		4, 1, 14, 87, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7,
-		4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 1, 0, 1, 0, 1, 0, 1, 0, 5, 0, 21,
-		8, 0, 10, 0, 12, 0, 24, 9, 0, 1, 0, 3, 0, 27, 8, 0, 3, 0, 29, 8, 0, 1,
-		0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 3, 1,
-		3, 1, 3, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 5, 4, 50, 8, 4, 10, 4, 12, 4, 53,
-		9, 4, 1, 4, 1, 4, 1, 5, 1, 5, 1, 5, 5, 5, 60, 8, 5, 10, 5, 12, 5, 63, 9,
-		5, 1, 6, 1, 6, 1, 6, 1, 6, 3, 6, 69, 8, 6, 1, 6, 1, 6, 5, 6, 73, 8, 6,
-		10, 6, 12, 6, 76, 9, 6, 1, 6, 1, 6, 1, 7, 1, 7, 5, 7, 82, 8, 7, 10, 7,
-		12, 7, 85, 9, 7, 1, 7, 0, 0, 8, 0, 2, 4, 6, 8, 10, 12, 14, 0, 1, 2, 0,
-		10, 12, 14, 14, 88, 0, 16, 1, 0, 0, 0, 2, 32, 1, 0, 0, 0, 4, 37, 1, 0,
-		0, 0, 6, 40, 1, 0, 0, 0, 8, 44, 1, 0, 0, 0, 10, 56, 1, 0, 0, 0, 12, 64,
-		1, 0, 0, 0, 14, 83, 1, 0, 0, 0, 16, 28, 5, 1, 0, 0, 17, 22, 3, 4, 2, 0,
-		18, 19, 5, 2, 0, 0, 19, 21, 3, 4, 2, 0, 20, 18, 1, 0, 0, 0, 21, 24, 1,
-		0, 0, 0, 22, 20, 1, 0, 0, 0, 22, 23, 1, 0, 0, 0, 23, 26, 1, 0, 0, 0, 24,
-		22, 1, 0, 0, 0, 25, 27, 5, 2, 0, 0, 26, 25, 1, 0, 0, 0, 26, 27, 1, 0, 0,
-		0, 27, 29, 1, 0, 0, 0, 28, 17, 1, 0, 0, 0, 28, 29, 1, 0, 0, 0, 29, 30,
-		1, 0, 0, 0, 30, 31, 5, 3, 0, 0, 31, 1, 1, 0, 0, 0, 32, 33, 5, 12, 0, 0,
-		33, 34, 5, 12, 0, 0, 34, 35, 3, 0, 0, 0, 35, 36, 3, 12, 6, 0, 36, 3, 1,
-		0, 0, 0, 37, 38, 5, 12, 0, 0, 38, 39, 5, 12, 0, 0, 39, 5, 1, 0, 0, 0, 40,
-		41, 3, 4, 2, 0, 41, 42, 5, 4, 0, 0, 42, 43, 3, 10, 5, 0, 43, 7, 1, 0, 0,
-		0, 44, 45, 5, 5, 0, 0, 45, 46, 5, 12, 0, 0, 46, 51, 3, 10, 5, 0, 47, 48,
-		5, 2, 0, 0, 48, 50, 3, 10, 5, 0, 49, 47, 1, 0, 0, 0, 50, 53, 1, 0, 0, 0,
-		51, 49, 1, 0, 0, 0, 51, 52, 1, 0, 0, 0, 52, 54, 1, 0, 0, 0, 53, 51, 1,
-		0, 0, 0, 54, 55, 5, 6, 0, 0, 55, 9, 1, 0, 0, 0, 56, 61, 7, 0, 0, 0, 57,
-		58, 5, 13, 0, 0, 58, 60, 3, 10, 5, 0, 59, 57, 1, 0, 0, 0, 60, 63, 1, 0,
-		0, 0, 61, 59, 1, 0, 0, 0, 61, 62, 1, 0, 0, 0, 62, 11, 1, 0, 0, 0, 63, 61,
-		1, 0, 0, 0, 64, 74, 5, 7, 0, 0, 65, 69, 3, 10, 5, 0, 66, 69, 3, 4, 2, 0,
-		67, 69, 3, 6, 3, 0, 68, 65, 1, 0, 0, 0, 68, 66, 1, 0, 0, 0, 68, 67, 1,
-		0, 0, 0, 69, 70, 1, 0, 0, 0, 70, 71, 5, 6, 0, 0, 71, 73, 1, 0, 0, 0, 72,
-		68, 1, 0, 0, 0, 73, 76, 1, 0, 0, 0, 74, 72, 1, 0, 0, 0, 74, 75, 1, 0, 0,
-		0, 75, 77, 1, 0, 0, 0, 76, 74, 1, 0, 0, 0, 77, 78, 5, 8, 0, 0, 78, 13,
-		1, 0, 0, 0, 79, 82, 3, 8, 4, 0, 80, 82, 3, 2, 1, 0, 81, 79, 1, 0, 0, 0,
-		81, 80, 1, 0, 0, 0, 82, 85, 1, 0, 0, 0, 83, 81, 1, 0, 0, 0, 83, 84, 1,
-		0, 0, 0, 84, 15, 1, 0, 0, 0, 85, 83, 1, 0, 0, 0, 9, 22, 26, 28, 51, 61,
-		68, 74, 81, 83,
+		4, 1, 15, 132, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7,
+		4, 2, 5, 7, 5, 2, 6, 7, 6, 2, 7, 7, 7, 2, 8, 7, 8, 2, 9, 7, 9, 2, 10, 7,
+		10, 1, 0, 1, 0, 1, 0, 1, 0, 5, 0, 27, 8, 0, 10, 0, 12, 0, 30, 9, 0, 1,
+		0, 3, 0, 33, 8, 0, 3, 0, 35, 8, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1,
+		5, 1, 43, 8, 1, 10, 1, 12, 1, 46, 9, 1, 1, 1, 3, 1, 49, 8, 1, 3, 1, 51,
+		8, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 4,
+		1, 4, 1, 4, 1, 5, 1, 5, 1, 5, 1, 5, 1, 6, 1, 6, 3, 6, 72, 8, 6, 1, 6, 1,
+		6, 1, 6, 3, 6, 77, 8, 6, 5, 6, 79, 8, 6, 10, 6, 12, 6, 82, 9, 6, 1, 7,
+		1, 7, 1, 7, 1, 7, 1, 7, 5, 7, 89, 8, 7, 10, 7, 12, 7, 92, 9, 7, 1, 7, 1,
+		7, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 3, 8, 101, 8, 8, 1, 8, 1, 8, 5, 8, 105,
+		8, 8, 10, 8, 12, 8, 108, 9, 8, 1, 9, 1, 9, 1, 9, 1, 9, 3, 9, 114, 8, 9,
+		1, 9, 1, 9, 5, 9, 118, 8, 9, 10, 9, 12, 9, 121, 9, 9, 1, 9, 1, 9, 1, 10,
+		1, 10, 5, 10, 127, 8, 10, 10, 10, 12, 10, 130, 9, 10, 1, 10, 0, 0, 11,
+		0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 0, 0, 140, 0, 22, 1, 0, 0, 0, 2,
+		38, 1, 0, 0, 0, 4, 54, 1, 0, 0, 0, 6, 57, 1, 0, 0, 0, 8, 62, 1, 0, 0, 0,
+		10, 65, 1, 0, 0, 0, 12, 71, 1, 0, 0, 0, 14, 83, 1, 0, 0, 0, 16, 100, 1,
+		0, 0, 0, 18, 109, 1, 0, 0, 0, 20, 128, 1, 0, 0, 0, 22, 34, 5, 1, 0, 0,
+		23, 28, 3, 8, 4, 0, 24, 25, 5, 2, 0, 0, 25, 27, 3, 8, 4, 0, 26, 24, 1,
+		0, 0, 0, 27, 30, 1, 0, 0, 0, 28, 26, 1, 0, 0, 0, 28, 29, 1, 0, 0, 0, 29,
+		32, 1, 0, 0, 0, 30, 28, 1, 0, 0, 0, 31, 33, 5, 2, 0, 0, 32, 31, 1, 0, 0,
+		0, 32, 33, 1, 0, 0, 0, 33, 35, 1, 0, 0, 0, 34, 23, 1, 0, 0, 0, 34, 35,
+		1, 0, 0, 0, 35, 36, 1, 0, 0, 0, 36, 37, 5, 3, 0, 0, 37, 1, 1, 0, 0, 0,
+		38, 50, 5, 1, 0, 0, 39, 44, 3, 16, 8, 0, 40, 41, 5, 2, 0, 0, 41, 43, 3,
+		16, 8, 0, 42, 40, 1, 0, 0, 0, 43, 46, 1, 0, 0, 0, 44, 42, 1, 0, 0, 0, 44,
+		45, 1, 0, 0, 0, 45, 48, 1, 0, 0, 0, 46, 44, 1, 0, 0, 0, 47, 49, 5, 2, 0,
+		0, 48, 47, 1, 0, 0, 0, 48, 49, 1, 0, 0, 0, 49, 51, 1, 0, 0, 0, 50, 39,
+		1, 0, 0, 0, 50, 51, 1, 0, 0, 0, 51, 52, 1, 0, 0, 0, 52, 53, 5, 3, 0, 0,
+		53, 3, 1, 0, 0, 0, 54, 55, 5, 13, 0, 0, 55, 56, 3, 2, 1, 0, 56, 5, 1, 0,
+		0, 0, 57, 58, 5, 13, 0, 0, 58, 59, 5, 13, 0, 0, 59, 60, 3, 0, 0, 0, 60,
+		61, 3, 18, 9, 0, 61, 7, 1, 0, 0, 0, 62, 63, 5, 13, 0, 0, 63, 64, 5, 13,
+		0, 0, 64, 9, 1, 0, 0, 0, 65, 66, 3, 8, 4, 0, 66, 67, 5, 4, 0, 0, 67, 68,
+		3, 16, 8, 0, 68, 11, 1, 0, 0, 0, 69, 72, 3, 4, 2, 0, 70, 72, 5, 13, 0,
+		0, 71, 69, 1, 0, 0, 0, 71, 70, 1, 0, 0, 0, 72, 80, 1, 0, 0, 0, 73, 76,
+		5, 5, 0, 0, 74, 77, 3, 4, 2, 0, 75, 77, 5, 13, 0, 0, 76, 74, 1, 0, 0, 0,
+		76, 75, 1, 0, 0, 0, 77, 79, 1, 0, 0, 0, 78, 73, 1, 0, 0, 0, 79, 82, 1,
+		0, 0, 0, 80, 78, 1, 0, 0, 0, 80, 81, 1, 0, 0, 0, 81, 13, 1, 0, 0, 0, 82,
+		80, 1, 0, 0, 0, 83, 84, 5, 6, 0, 0, 84, 85, 5, 13, 0, 0, 85, 90, 3, 16,
+		8, 0, 86, 87, 5, 2, 0, 0, 87, 89, 3, 16, 8, 0, 88, 86, 1, 0, 0, 0, 89,
+		92, 1, 0, 0, 0, 90, 88, 1, 0, 0, 0, 90, 91, 1, 0, 0, 0, 91, 93, 1, 0, 0,
+		0, 92, 90, 1, 0, 0, 0, 93, 94, 5, 7, 0, 0, 94, 15, 1, 0, 0, 0, 95, 101,
+		3, 12, 6, 0, 96, 101, 5, 11, 0, 0, 97, 101, 5, 12, 0, 0, 98, 101, 5, 13,
+		0, 0, 99, 101, 5, 15, 0, 0, 100, 95, 1, 0, 0, 0, 100, 96, 1, 0, 0, 0, 100,
+		97, 1, 0, 0, 0, 100, 98, 1, 0, 0, 0, 100, 99, 1, 0, 0, 0, 101, 106, 1,
+		0, 0, 0, 102, 103, 5, 14, 0, 0, 103, 105, 3, 16, 8, 0, 104, 102, 1, 0,
+		0, 0, 105, 108, 1, 0, 0, 0, 106, 104, 1, 0, 0, 0, 106, 107, 1, 0, 0, 0,
+		107, 17, 1, 0, 0, 0, 108, 106, 1, 0, 0, 0, 109, 119, 5, 8, 0, 0, 110, 114,
+		3, 16, 8, 0, 111, 114, 3, 8, 4, 0, 112, 114, 3, 10, 5, 0, 113, 110, 1,
+		0, 0, 0, 113, 111, 1, 0, 0, 0, 113, 112, 1, 0, 0, 0, 114, 115, 1, 0, 0,
+		0, 115, 116, 5, 7, 0, 0, 116, 118, 1, 0, 0, 0, 117, 113, 1, 0, 0, 0, 118,
+		121, 1, 0, 0, 0, 119, 117, 1, 0, 0, 0, 119, 120, 1, 0, 0, 0, 120, 122,
+		1, 0, 0, 0, 121, 119, 1, 0, 0, 0, 122, 123, 5, 9, 0, 0, 123, 19, 1, 0,
+		0, 0, 124, 127, 3, 14, 7, 0, 125, 127, 3, 6, 3, 0, 126, 124, 1, 0, 0, 0,
+		126, 125, 1, 0, 0, 0, 127, 130, 1, 0, 0, 0, 128, 126, 1, 0, 0, 0, 128,
+		129, 1, 0, 0, 0, 129, 21, 1, 0, 0, 0, 130, 128, 1, 0, 0, 0, 16, 28, 32,
+		34, 44, 48, 50, 71, 76, 80, 90, 100, 106, 113, 119, 126, 128,
 	}
 	deserializer := antlr.NewATNDeserializer(nil)
 	staticData.atn = deserializer.Deserialize(staticData.serializedATN)
@@ -126,24 +146,28 @@ const (
 	WystParserT__5       = 6
 	WystParserT__6       = 7
 	WystParserT__7       = 8
-	WystParserWS         = 9
-	WystParserNUMBER     = 10
-	WystParserHEX        = 11
-	WystParserIDENTIFIER = 12
-	WystParserMATH       = 13
-	WystParserSTRING     = 14
+	WystParserT__8       = 9
+	WystParserWS         = 10
+	WystParserNUMBER     = 11
+	WystParserHEX        = 12
+	WystParserIDENTIFIER = 13
+	WystParserMATH       = 14
+	WystParserSTRING     = 15
 )
 
 // WystParser rules.
 const (
 	WystParserRULE_round_def   = 0
-	WystParserRULE_func_def    = 1
-	WystParserRULE_var_def     = 2
-	WystParserRULE_var_def_set = 3
-	WystParserRULE_asm         = 4
-	WystParserRULE_expr        = 5
-	WystParserRULE_code_block  = 6
-	WystParserRULE_top         = 7
+	WystParserRULE_round_call  = 1
+	WystParserRULE_fn_call     = 2
+	WystParserRULE_func_def    = 3
+	WystParserRULE_var_def     = 4
+	WystParserRULE_var_def_set = 5
+	WystParserRULE_call_tree   = 6
+	WystParserRULE_asm         = 7
+	WystParserRULE_expr        = 8
+	WystParserRULE_code_block  = 9
+	WystParserRULE_top         = 10
 )
 
 // IRound_defContext is an interface to support dynamic dispatch.
@@ -263,14 +287,14 @@ func (p *WystParser) Round_def() (localctx IRound_defContext) {
 
 	p.EnterOuterAlt(localctx, 1)
 	{
-		p.SetState(16)
+		p.SetState(22)
 		p.Match(WystParserT__0)
 		if p.HasError() {
 			// Recognition error - abort rule
 			goto errorExit
 		}
 	}
-	p.SetState(28)
+	p.SetState(34)
 	p.GetErrorHandler().Sync(p)
 	if p.HasError() {
 		goto errorExit
@@ -279,10 +303,10 @@ func (p *WystParser) Round_def() (localctx IRound_defContext) {
 
 	if _la == WystParserIDENTIFIER {
 		{
-			p.SetState(17)
+			p.SetState(23)
 			p.Var_def()
 		}
-		p.SetState(22)
+		p.SetState(28)
 		p.GetErrorHandler().Sync(p)
 		if p.HasError() {
 			goto errorExit
@@ -294,7 +318,7 @@ func (p *WystParser) Round_def() (localctx IRound_defContext) {
 		for _alt != 2 && _alt != antlr.ATNInvalidAltNumber {
 			if _alt == 1 {
 				{
-					p.SetState(18)
+					p.SetState(24)
 					p.Match(WystParserT__1)
 					if p.HasError() {
 						// Recognition error - abort rule
@@ -302,12 +326,12 @@ func (p *WystParser) Round_def() (localctx IRound_defContext) {
 					}
 				}
 				{
-					p.SetState(19)
+					p.SetState(25)
 					p.Var_def()
 				}
 
 			}
-			p.SetState(24)
+			p.SetState(30)
 			p.GetErrorHandler().Sync(p)
 			if p.HasError() {
 				goto errorExit
@@ -317,7 +341,7 @@ func (p *WystParser) Round_def() (localctx IRound_defContext) {
 				goto errorExit
 			}
 		}
-		p.SetState(26)
+		p.SetState(32)
 		p.GetErrorHandler().Sync(p)
 		if p.HasError() {
 			goto errorExit
@@ -326,7 +350,7 @@ func (p *WystParser) Round_def() (localctx IRound_defContext) {
 
 		if _la == WystParserT__1 {
 			{
-				p.SetState(25)
+				p.SetState(31)
 				p.Match(WystParserT__1)
 				if p.HasError() {
 					// Recognition error - abort rule
@@ -338,7 +362,7 @@ func (p *WystParser) Round_def() (localctx IRound_defContext) {
 
 	}
 	{
-		p.SetState(30)
+		p.SetState(36)
 		p.Match(WystParserT__2)
 		if p.HasError() {
 			// Recognition error - abort rule
@@ -359,6 +383,336 @@ errorExit:
 	goto errorExit // Trick to prevent compiler error if the label is not used
 }
 
+// IRound_callContext is an interface to support dynamic dispatch.
+type IRound_callContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// Getter signatures
+	AllExpr() []IExprContext
+	Expr(i int) IExprContext
+
+	// IsRound_callContext differentiates from other interfaces.
+	IsRound_callContext()
+}
+
+type Round_callContext struct {
+	antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyRound_callContext() *Round_callContext {
+	var p = new(Round_callContext)
+	antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1)
+	p.RuleIndex = WystParserRULE_round_call
+	return p
+}
+
+func InitEmptyRound_callContext(p *Round_callContext) {
+	antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1)
+	p.RuleIndex = WystParserRULE_round_call
+}
+
+func (*Round_callContext) IsRound_callContext() {}
+
+func NewRound_callContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *Round_callContext {
+	var p = new(Round_callContext)
+
+	antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = WystParserRULE_round_call
+
+	return p
+}
+
+func (s *Round_callContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *Round_callContext) AllExpr() []IExprContext {
+	children := s.GetChildren()
+	len := 0
+	for _, ctx := range children {
+		if _, ok := ctx.(IExprContext); ok {
+			len++
+		}
+	}
+
+	tst := make([]IExprContext, len)
+	i := 0
+	for _, ctx := range children {
+		if t, ok := ctx.(IExprContext); ok {
+			tst[i] = t.(IExprContext)
+			i++
+		}
+	}
+
+	return tst
+}
+
+func (s *Round_callContext) Expr(i int) IExprContext {
+	var t antlr.RuleContext
+	j := 0
+	for _, ctx := range s.GetChildren() {
+		if _, ok := ctx.(IExprContext); ok {
+			if j == i {
+				t = ctx.(antlr.RuleContext)
+				break
+			}
+			j++
+		}
+	}
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IExprContext)
+}
+
+func (s *Round_callContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *Round_callContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *Round_callContext) EnterRule(listener antlr.ParseTreeListener) {
+	if listenerT, ok := listener.(WystListener); ok {
+		listenerT.EnterRound_call(s)
+	}
+}
+
+func (s *Round_callContext) ExitRule(listener antlr.ParseTreeListener) {
+	if listenerT, ok := listener.(WystListener); ok {
+		listenerT.ExitRound_call(s)
+	}
+}
+
+func (p *WystParser) Round_call() (localctx IRound_callContext) {
+	localctx = NewRound_callContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 2, WystParserRULE_round_call)
+	var _la int
+
+	var _alt int
+
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(38)
+		p.Match(WystParserT__0)
+		if p.HasError() {
+			// Recognition error - abort rule
+			goto errorExit
+		}
+	}
+	p.SetState(50)
+	p.GetErrorHandler().Sync(p)
+	if p.HasError() {
+		goto errorExit
+	}
+	_la = p.GetTokenStream().LA(1)
+
+	if (int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&47104) != 0 {
+		{
+			p.SetState(39)
+			p.Expr()
+		}
+		p.SetState(44)
+		p.GetErrorHandler().Sync(p)
+		if p.HasError() {
+			goto errorExit
+		}
+		_alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 3, p.GetParserRuleContext())
+		if p.HasError() {
+			goto errorExit
+		}
+		for _alt != 2 && _alt != antlr.ATNInvalidAltNumber {
+			if _alt == 1 {
+				{
+					p.SetState(40)
+					p.Match(WystParserT__1)
+					if p.HasError() {
+						// Recognition error - abort rule
+						goto errorExit
+					}
+				}
+				{
+					p.SetState(41)
+					p.Expr()
+				}
+
+			}
+			p.SetState(46)
+			p.GetErrorHandler().Sync(p)
+			if p.HasError() {
+				goto errorExit
+			}
+			_alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 3, p.GetParserRuleContext())
+			if p.HasError() {
+				goto errorExit
+			}
+		}
+		p.SetState(48)
+		p.GetErrorHandler().Sync(p)
+		if p.HasError() {
+			goto errorExit
+		}
+		_la = p.GetTokenStream().LA(1)
+
+		if _la == WystParserT__1 {
+			{
+				p.SetState(47)
+				p.Match(WystParserT__1)
+				if p.HasError() {
+					// Recognition error - abort rule
+					goto errorExit
+				}
+			}
+
+		}
+
+	}
+	{
+		p.SetState(52)
+		p.Match(WystParserT__2)
+		if p.HasError() {
+			// Recognition error - abort rule
+			goto errorExit
+		}
+	}
+
+errorExit:
+	if p.HasError() {
+		v := p.GetError()
+		localctx.SetException(v)
+		p.GetErrorHandler().ReportError(p, v)
+		p.GetErrorHandler().Recover(p, v)
+		p.SetError(nil)
+	}
+	p.ExitRule()
+	return localctx
+	goto errorExit // Trick to prevent compiler error if the label is not used
+}
+
+// IFn_callContext is an interface to support dynamic dispatch.
+type IFn_callContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// Getter signatures
+	IDENTIFIER() antlr.TerminalNode
+	Round_call() IRound_callContext
+
+	// IsFn_callContext differentiates from other interfaces.
+	IsFn_callContext()
+}
+
+type Fn_callContext struct {
+	antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyFn_callContext() *Fn_callContext {
+	var p = new(Fn_callContext)
+	antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1)
+	p.RuleIndex = WystParserRULE_fn_call
+	return p
+}
+
+func InitEmptyFn_callContext(p *Fn_callContext) {
+	antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1)
+	p.RuleIndex = WystParserRULE_fn_call
+}
+
+func (*Fn_callContext) IsFn_callContext() {}
+
+func NewFn_callContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *Fn_callContext {
+	var p = new(Fn_callContext)
+
+	antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = WystParserRULE_fn_call
+
+	return p
+}
+
+func (s *Fn_callContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *Fn_callContext) IDENTIFIER() antlr.TerminalNode {
+	return s.GetToken(WystParserIDENTIFIER, 0)
+}
+
+func (s *Fn_callContext) Round_call() IRound_callContext {
+	var t antlr.RuleContext
+	for _, ctx := range s.GetChildren() {
+		if _, ok := ctx.(IRound_callContext); ok {
+			t = ctx.(antlr.RuleContext)
+			break
+		}
+	}
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IRound_callContext)
+}
+
+func (s *Fn_callContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *Fn_callContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *Fn_callContext) EnterRule(listener antlr.ParseTreeListener) {
+	if listenerT, ok := listener.(WystListener); ok {
+		listenerT.EnterFn_call(s)
+	}
+}
+
+func (s *Fn_callContext) ExitRule(listener antlr.ParseTreeListener) {
+	if listenerT, ok := listener.(WystListener); ok {
+		listenerT.ExitFn_call(s)
+	}
+}
+
+func (p *WystParser) Fn_call() (localctx IFn_callContext) {
+	localctx = NewFn_callContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 4, WystParserRULE_fn_call)
+	p.EnterOuterAlt(localctx, 1)
+	{
+		p.SetState(54)
+		p.Match(WystParserIDENTIFIER)
+		if p.HasError() {
+			// Recognition error - abort rule
+			goto errorExit
+		}
+	}
+	{
+		p.SetState(55)
+		p.Round_call()
+	}
+
+errorExit:
+	if p.HasError() {
+		v := p.GetError()
+		localctx.SetException(v)
+		p.GetErrorHandler().ReportError(p, v)
+		p.GetErrorHandler().Recover(p, v)
+		p.SetError(nil)
+	}
+	p.ExitRule()
+	return localctx
+	goto errorExit // Trick to prevent compiler error if the label is not used
+}
+
 // IFunc_defContext is an interface to support dynamic dispatch.
 type IFunc_defContext interface {
 	antlr.ParserRuleContext
@@ -470,10 +824,10 @@ func (s *Func_defContext) ExitRule(listener antlr.ParseTreeListener) {
 
 func (p *WystParser) Func_def() (localctx IFunc_defContext) {
 	localctx = NewFunc_defContext(p, p.GetParserRuleContext(), p.GetState())
-	p.EnterRule(localctx, 2, WystParserRULE_func_def)
+	p.EnterRule(localctx, 6, WystParserRULE_func_def)
 	p.EnterOuterAlt(localctx, 1)
 	{
-		p.SetState(32)
+		p.SetState(57)
 		p.Match(WystParserIDENTIFIER)
 		if p.HasError() {
 			// Recognition error - abort rule
@@ -481,7 +835,7 @@ func (p *WystParser) Func_def() (localctx IFunc_defContext) {
 		}
 	}
 	{
-		p.SetState(33)
+		p.SetState(58)
 		p.Match(WystParserIDENTIFIER)
 		if p.HasError() {
 			// Recognition error - abort rule
@@ -489,11 +843,11 @@ func (p *WystParser) Func_def() (localctx IFunc_defContext) {
 		}
 	}
 	{
-		p.SetState(34)
+		p.SetState(59)
 		p.Round_def()
 	}
 	{
-		p.SetState(35)
+		p.SetState(60)
 		p.Code_block()
 	}
 
@@ -587,10 +941,10 @@ func (s *Var_defContext) ExitRule(listener antlr.ParseTreeListener) {
 
 func (p *WystParser) Var_def() (localctx IVar_defContext) {
 	localctx = NewVar_defContext(p, p.GetParserRuleContext(), p.GetState())
-	p.EnterRule(localctx, 4, WystParserRULE_var_def)
+	p.EnterRule(localctx, 8, WystParserRULE_var_def)
 	p.EnterOuterAlt(localctx, 1)
 	{
-		p.SetState(37)
+		p.SetState(62)
 		p.Match(WystParserIDENTIFIER)
 		if p.HasError() {
 			// Recognition error - abort rule
@@ -598,7 +952,7 @@ func (p *WystParser) Var_def() (localctx IVar_defContext) {
 		}
 	}
 	{
-		p.SetState(38)
+		p.SetState(63)
 		p.Match(WystParserIDENTIFIER)
 		if p.HasError() {
 			// Recognition error - abort rule
@@ -720,14 +1074,14 @@ func (s *Var_def_setContext) ExitRule(listener antlr.ParseTreeListener) {
 
 func (p *WystParser) Var_def_set() (localctx IVar_def_setContext) {
 	localctx = NewVar_def_setContext(p, p.GetParserRuleContext(), p.GetState())
-	p.EnterRule(localctx, 6, WystParserRULE_var_def_set)
+	p.EnterRule(localctx, 10, WystParserRULE_var_def_set)
 	p.EnterOuterAlt(localctx, 1)
 	{
-		p.SetState(40)
+		p.SetState(65)
 		p.Var_def()
 	}
 	{
-		p.SetState(41)
+		p.SetState(66)
 		p.Match(WystParserT__3)
 		if p.HasError() {
 			// Recognition error - abort rule
@@ -735,7 +1089,7 @@ func (p *WystParser) Var_def_set() (localctx IVar_def_setContext) {
 		}
 	}
 	{
-		p.SetState(42)
+		p.SetState(67)
 		p.Expr()
 	}
 
@@ -752,6 +1106,220 @@ errorExit:
 	goto errorExit // Trick to prevent compiler error if the label is not used
 }
 
+// ICall_treeContext is an interface to support dynamic dispatch.
+type ICall_treeContext interface {
+	antlr.ParserRuleContext
+
+	// GetParser returns the parser.
+	GetParser() antlr.Parser
+
+	// Getter signatures
+	AllFn_call() []IFn_callContext
+	Fn_call(i int) IFn_callContext
+	AllIDENTIFIER() []antlr.TerminalNode
+	IDENTIFIER(i int) antlr.TerminalNode
+
+	// IsCall_treeContext differentiates from other interfaces.
+	IsCall_treeContext()
+}
+
+type Call_treeContext struct {
+	antlr.BaseParserRuleContext
+	parser antlr.Parser
+}
+
+func NewEmptyCall_treeContext() *Call_treeContext {
+	var p = new(Call_treeContext)
+	antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1)
+	p.RuleIndex = WystParserRULE_call_tree
+	return p
+}
+
+func InitEmptyCall_treeContext(p *Call_treeContext) {
+	antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, nil, -1)
+	p.RuleIndex = WystParserRULE_call_tree
+}
+
+func (*Call_treeContext) IsCall_treeContext() {}
+
+func NewCall_treeContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokingState int) *Call_treeContext {
+	var p = new(Call_treeContext)
+
+	antlr.InitBaseParserRuleContext(&p.BaseParserRuleContext, parent, invokingState)
+
+	p.parser = parser
+	p.RuleIndex = WystParserRULE_call_tree
+
+	return p
+}
+
+func (s *Call_treeContext) GetParser() antlr.Parser { return s.parser }
+
+func (s *Call_treeContext) AllFn_call() []IFn_callContext {
+	children := s.GetChildren()
+	len := 0
+	for _, ctx := range children {
+		if _, ok := ctx.(IFn_callContext); ok {
+			len++
+		}
+	}
+
+	tst := make([]IFn_callContext, len)
+	i := 0
+	for _, ctx := range children {
+		if t, ok := ctx.(IFn_callContext); ok {
+			tst[i] = t.(IFn_callContext)
+			i++
+		}
+	}
+
+	return tst
+}
+
+func (s *Call_treeContext) Fn_call(i int) IFn_callContext {
+	var t antlr.RuleContext
+	j := 0
+	for _, ctx := range s.GetChildren() {
+		if _, ok := ctx.(IFn_callContext); ok {
+			if j == i {
+				t = ctx.(antlr.RuleContext)
+				break
+			}
+			j++
+		}
+	}
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(IFn_callContext)
+}
+
+func (s *Call_treeContext) AllIDENTIFIER() []antlr.TerminalNode {
+	return s.GetTokens(WystParserIDENTIFIER)
+}
+
+func (s *Call_treeContext) IDENTIFIER(i int) antlr.TerminalNode {
+	return s.GetToken(WystParserIDENTIFIER, i)
+}
+
+func (s *Call_treeContext) GetRuleContext() antlr.RuleContext {
+	return s
+}
+
+func (s *Call_treeContext) ToStringTree(ruleNames []string, recog antlr.Recognizer) string {
+	return antlr.TreesStringTree(s, ruleNames, recog)
+}
+
+func (s *Call_treeContext) EnterRule(listener antlr.ParseTreeListener) {
+	if listenerT, ok := listener.(WystListener); ok {
+		listenerT.EnterCall_tree(s)
+	}
+}
+
+func (s *Call_treeContext) ExitRule(listener antlr.ParseTreeListener) {
+	if listenerT, ok := listener.(WystListener); ok {
+		listenerT.ExitCall_tree(s)
+	}
+}
+
+func (p *WystParser) Call_tree() (localctx ICall_treeContext) {
+	localctx = NewCall_treeContext(p, p.GetParserRuleContext(), p.GetState())
+	p.EnterRule(localctx, 12, WystParserRULE_call_tree)
+	var _la int
+
+	p.EnterOuterAlt(localctx, 1)
+	p.SetState(71)
+	p.GetErrorHandler().Sync(p)
+	if p.HasError() {
+		goto errorExit
+	}
+
+	switch p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 6, p.GetParserRuleContext()) {
+	case 1:
+		{
+			p.SetState(69)
+			p.Fn_call()
+		}
+
+	case 2:
+		{
+			p.SetState(70)
+			p.Match(WystParserIDENTIFIER)
+			if p.HasError() {
+				// Recognition error - abort rule
+				goto errorExit
+			}
+		}
+
+	case antlr.ATNInvalidAltNumber:
+		goto errorExit
+	}
+	p.SetState(80)
+	p.GetErrorHandler().Sync(p)
+	if p.HasError() {
+		goto errorExit
+	}
+	_la = p.GetTokenStream().LA(1)
+
+	for _la == WystParserT__4 {
+		{
+			p.SetState(73)
+			p.Match(WystParserT__4)
+			if p.HasError() {
+				// Recognition error - abort rule
+				goto errorExit
+			}
+		}
+		p.SetState(76)
+		p.GetErrorHandler().Sync(p)
+		if p.HasError() {
+			goto errorExit
+		}
+
+		switch p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 7, p.GetParserRuleContext()) {
+		case 1:
+			{
+				p.SetState(74)
+				p.Fn_call()
+			}
+
+		case 2:
+			{
+				p.SetState(75)
+				p.Match(WystParserIDENTIFIER)
+				if p.HasError() {
+					// Recognition error - abort rule
+					goto errorExit
+				}
+			}
+
+		case antlr.ATNInvalidAltNumber:
+			goto errorExit
+		}
+
+		p.SetState(82)
+		p.GetErrorHandler().Sync(p)
+		if p.HasError() {
+			goto errorExit
+		}
+		_la = p.GetTokenStream().LA(1)
+	}
+
+errorExit:
+	if p.HasError() {
+		v := p.GetError()
+		localctx.SetException(v)
+		p.GetErrorHandler().ReportError(p, v)
+		p.GetErrorHandler().Recover(p, v)
+		p.SetError(nil)
+	}
+	p.ExitRule()
+	return localctx
+	goto errorExit // Trick to prevent compiler error if the label is not used
+}
+
 // IAsmContext is an interface to support dynamic dispatch.
 type IAsmContext interface {
 	antlr.ParserRuleContext
@@ -867,20 +1435,20 @@ func (s *AsmContext) ExitRule(listener antlr.ParseTreeListener) {
 
 func (p *WystParser) Asm() (localctx IAsmContext) {
 	localctx = NewAsmContext(p, p.GetParserRuleContext(), p.GetState())
-	p.EnterRule(localctx, 8, WystParserRULE_asm)
+	p.EnterRule(localctx, 14, WystParserRULE_asm)
 	var _la int
 
 	p.EnterOuterAlt(localctx, 1)
 	{
-		p.SetState(44)
-		p.Match(WystParserT__4)
+		p.SetState(83)
+		p.Match(WystParserT__5)
 		if p.HasError() {
 			// Recognition error - abort rule
 			goto errorExit
 		}
 	}
 	{
-		p.SetState(45)
+		p.SetState(84)
 		p.Match(WystParserIDENTIFIER)
 		if p.HasError() {
 			// Recognition error - abort rule
@@ -888,10 +1456,10 @@ func (p *WystParser) Asm() (localctx IAsmContext) {
 		}
 	}
 	{
-		p.SetState(46)
+		p.SetState(85)
 		p.Expr()
 	}
-	p.SetState(51)
+	p.SetState(90)
 	p.GetErrorHandler().Sync(p)
 	if p.HasError() {
 		goto errorExit
@@ -900,7 +1468,7 @@ func (p *WystParser) Asm() (localctx IAsmContext) {
 
 	for _la == WystParserT__1 {
 		{
-			p.SetState(47)
+			p.SetState(86)
 			p.Match(WystParserT__1)
 			if p.HasError() {
 				// Recognition error - abort rule
@@ -908,11 +1476,11 @@ func (p *WystParser) Asm() (localctx IAsmContext) {
 			}
 		}
 		{
-			p.SetState(48)
+			p.SetState(87)
 			p.Expr()
 		}
 
-		p.SetState(53)
+		p.SetState(92)
 		p.GetErrorHandler().Sync(p)
 		if p.HasError() {
 			goto errorExit
@@ -920,8 +1488,8 @@ func (p *WystParser) Asm() (localctx IAsmContext) {
 		_la = p.GetTokenStream().LA(1)
 	}
 	{
-		p.SetState(54)
-		p.Match(WystParserT__5)
+		p.SetState(93)
+		p.Match(WystParserT__6)
 		if p.HasError() {
 			// Recognition error - abort rule
 			goto errorExit
@@ -949,6 +1517,7 @@ type IExprContext interface {
 	GetParser() antlr.Parser
 
 	// Getter signatures
+	Call_tree() ICall_treeContext
 	NUMBER() antlr.TerminalNode
 	HEX() antlr.TerminalNode
 	IDENTIFIER() antlr.TerminalNode
@@ -994,6 +1563,22 @@ func NewExprContext(parser antlr.Parser, parent antlr.ParserRuleContext, invokin
 
 func (s *ExprContext) GetParser() antlr.Parser { return s.parser }
 
+func (s *ExprContext) Call_tree() ICall_treeContext {
+	var t antlr.RuleContext
+	for _, ctx := range s.GetChildren() {
+		if _, ok := ctx.(ICall_treeContext); ok {
+			t = ctx.(antlr.RuleContext)
+			break
+		}
+	}
+
+	if t == nil {
+		return nil
+	}
+
+	return t.(ICall_treeContext)
+}
+
 func (s *ExprContext) NUMBER() antlr.TerminalNode {
 	return s.GetToken(WystParserNUMBER, 0)
 }
@@ -1081,36 +1666,79 @@ func (s *ExprContext) ExitRule(listener antlr.ParseTreeListener) {
 
 func (p *WystParser) Expr() (localctx IExprContext) {
 	localctx = NewExprContext(p, p.GetParserRuleContext(), p.GetState())
-	p.EnterRule(localctx, 10, WystParserRULE_expr)
-	var _la int
-
+	p.EnterRule(localctx, 16, WystParserRULE_expr)
 	var _alt int
 
 	p.EnterOuterAlt(localctx, 1)
-	{
-		p.SetState(56)
-		_la = p.GetTokenStream().LA(1)
-
-		if !((int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&23552) != 0) {
-			p.GetErrorHandler().RecoverInline(p)
-		} else {
-			p.GetErrorHandler().ReportMatch(p)
-			p.Consume()
-		}
-	}
-	p.SetState(61)
+	p.SetState(100)
 	p.GetErrorHandler().Sync(p)
 	if p.HasError() {
 		goto errorExit
 	}
-	_alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 4, p.GetParserRuleContext())
+
+	switch p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 10, p.GetParserRuleContext()) {
+	case 1:
+		{
+			p.SetState(95)
+			p.Call_tree()
+		}
+
+	case 2:
+		{
+			p.SetState(96)
+			p.Match(WystParserNUMBER)
+			if p.HasError() {
+				// Recognition error - abort rule
+				goto errorExit
+			}
+		}
+
+	case 3:
+		{
+			p.SetState(97)
+			p.Match(WystParserHEX)
+			if p.HasError() {
+				// Recognition error - abort rule
+				goto errorExit
+			}
+		}
+
+	case 4:
+		{
+			p.SetState(98)
+			p.Match(WystParserIDENTIFIER)
+			if p.HasError() {
+				// Recognition error - abort rule
+				goto errorExit
+			}
+		}
+
+	case 5:
+		{
+			p.SetState(99)
+			p.Match(WystParserSTRING)
+			if p.HasError() {
+				// Recognition error - abort rule
+				goto errorExit
+			}
+		}
+
+	case antlr.ATNInvalidAltNumber:
+		goto errorExit
+	}
+	p.SetState(106)
+	p.GetErrorHandler().Sync(p)
+	if p.HasError() {
+		goto errorExit
+	}
+	_alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 11, p.GetParserRuleContext())
 	if p.HasError() {
 		goto errorExit
 	}
 	for _alt != 2 && _alt != antlr.ATNInvalidAltNumber {
 		if _alt == 1 {
 			{
-				p.SetState(57)
+				p.SetState(102)
 				p.Match(WystParserMATH)
 				if p.HasError() {
 					// Recognition error - abort rule
@@ -1118,17 +1746,17 @@ func (p *WystParser) Expr() (localctx IExprContext) {
 				}
 			}
 			{
-				p.SetState(58)
+				p.SetState(103)
 				p.Expr()
 			}
 
 		}
-		p.SetState(63)
+		p.SetState(108)
 		p.GetErrorHandler().Sync(p)
 		if p.HasError() {
 			goto errorExit
 		}
-		_alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 4, p.GetParserRuleContext())
+		_alt = p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 11, p.GetParserRuleContext())
 		if p.HasError() {
 			goto errorExit
 		}
@@ -1343,48 +1971,48 @@ func (s *Code_blockContext) ExitRule(listener antlr.ParseTreeListener) {
 
 func (p *WystParser) Code_block() (localctx ICode_blockContext) {
 	localctx = NewCode_blockContext(p, p.GetParserRuleContext(), p.GetState())
-	p.EnterRule(localctx, 12, WystParserRULE_code_block)
+	p.EnterRule(localctx, 18, WystParserRULE_code_block)
 	var _la int
 
 	p.EnterOuterAlt(localctx, 1)
 	{
-		p.SetState(64)
-		p.Match(WystParserT__6)
+		p.SetState(109)
+		p.Match(WystParserT__7)
 		if p.HasError() {
 			// Recognition error - abort rule
 			goto errorExit
 		}
 	}
-	p.SetState(74)
+	p.SetState(119)
 	p.GetErrorHandler().Sync(p)
 	if p.HasError() {
 		goto errorExit
 	}
 	_la = p.GetTokenStream().LA(1)
 
-	for (int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&23552) != 0 {
-		p.SetState(68)
+	for (int64(_la) & ^0x3f) == 0 && ((int64(1)<<_la)&47104) != 0 {
+		p.SetState(113)
 		p.GetErrorHandler().Sync(p)
 		if p.HasError() {
 			goto errorExit
 		}
 
-		switch p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 5, p.GetParserRuleContext()) {
+		switch p.GetInterpreter().AdaptivePredict(p.BaseParser, p.GetTokenStream(), 12, p.GetParserRuleContext()) {
 		case 1:
 			{
-				p.SetState(65)
+				p.SetState(110)
 				p.Expr()
 			}
 
 		case 2:
 			{
-				p.SetState(66)
+				p.SetState(111)
 				p.Var_def()
 			}
 
 		case 3:
 			{
-				p.SetState(67)
+				p.SetState(112)
 				p.Var_def_set()
 			}
 
@@ -1392,15 +2020,15 @@ func (p *WystParser) Code_block() (localctx ICode_blockContext) {
 			goto errorExit
 		}
 		{
-			p.SetState(70)
-			p.Match(WystParserT__5)
+			p.SetState(115)
+			p.Match(WystParserT__6)
 			if p.HasError() {
 				// Recognition error - abort rule
 				goto errorExit
 			}
 		}
 
-		p.SetState(76)
+		p.SetState(121)
 		p.GetErrorHandler().Sync(p)
 		if p.HasError() {
 			goto errorExit
@@ -1408,8 +2036,8 @@ func (p *WystParser) Code_block() (localctx ICode_blockContext) {
 		_la = p.GetTokenStream().LA(1)
 	}
 	{
-		p.SetState(77)
-		p.Match(WystParserT__7)
+		p.SetState(122)
+		p.Match(WystParserT__8)
 		if p.HasError() {
 			// Recognition error - abort rule
 			goto errorExit
@@ -1582,34 +2210,34 @@ func (s *TopContext) ExitRule(listener antlr.ParseTreeListener) {
 
 func (p *WystParser) Top() (localctx ITopContext) {
 	localctx = NewTopContext(p, p.GetParserRuleContext(), p.GetState())
-	p.EnterRule(localctx, 14, WystParserRULE_top)
+	p.EnterRule(localctx, 20, WystParserRULE_top)
 	var _la int
 
 	p.EnterOuterAlt(localctx, 1)
-	p.SetState(83)
+	p.SetState(128)
 	p.GetErrorHandler().Sync(p)
 	if p.HasError() {
 		goto errorExit
 	}
 	_la = p.GetTokenStream().LA(1)
 
-	for _la == WystParserT__4 || _la == WystParserIDENTIFIER {
-		p.SetState(81)
+	for _la == WystParserT__5 || _la == WystParserIDENTIFIER {
+		p.SetState(126)
 		p.GetErrorHandler().Sync(p)
 		if p.HasError() {
 			goto errorExit
 		}
 
 		switch p.GetTokenStream().LA(1) {
-		case WystParserT__4:
+		case WystParserT__5:
 			{
-				p.SetState(79)
+				p.SetState(124)
 				p.Asm()
 			}
 
 		case WystParserIDENTIFIER:
 			{
-				p.SetState(80)
+				p.SetState(125)
 				p.Func_def()
 			}
 
@@ -1618,7 +2246,7 @@ func (p *WystParser) Top() (localctx ITopContext) {
 			goto errorExit
 		}
 
-		p.SetState(85)
+		p.SetState(130)
 		p.GetErrorHandler().Sync(p)
 		if p.HasError() {
 			goto errorExit
diff --git a/src/parser.go b/src/parser.go
index 872a92a..6617795 100644
--- a/src/parser.go
+++ b/src/parser.go
@@ -37,7 +37,7 @@ func ConvertAST(node antlr.Tree, wparser *parser.WystParser, lexer *parser.WystL
 		}
 		for i := 0; i < node.GetChildCount(); i++ {
 			l := ConvertAST(node.GetChild(i), wparser, lexer)
-			if l.Rule != ("'"+l.Text+"'") || l.Text == ";" {
+			if l.Rule != ("'"+l.Text+"'") || l.Text == ";" || l.Text == "," {
 				ast.Inner = append(ast.Inner, l)
 			}
 		}
diff --git a/src/transpiler.go b/src/transpiler.go
index 6256ca5..fe532c9 100644
--- a/src/transpiler.go
+++ b/src/transpiler.go
@@ -29,6 +29,7 @@ func TranspileToken(node ASTNode) string {
 				res += fmt.Sprintf("%x", c)
 			}
 		}
+		res = strings.ReplaceAll(res, "::", "::_0x")
 	case "HEX":
 		res += node.Text
 	case "MATH":
@@ -37,6 +38,8 @@ func TranspileToken(node ASTNode) string {
 		res += node.Text
 	case "';'":
 		res += "\n  "
+	case "','":
+		res += ", "
 	default:
 		fmt.Printf("\x1b[33mDEV NOTICE:\x1b[0m Missing token case for '%s'\n", node.Rule)
 
@@ -57,19 +60,29 @@ func TranspileNode(node ASTNode) string {
 	case "expr":
 		res += TranspileNodes(node.Inner)
 	case "code_block":
-		res += "{\n  "
-		res += strings.TrimSuffix(TranspileNodes(node.Inner), " ")
-		res += "}\n"
+		res += fmt.Sprintf("{\n  %s}", strings.TrimSuffix(TranspileNodes(node.Inner), " "))
 	case "var_def":
 		res += fmt.Sprintf("var %s %s", TranspileNode(node.Inner[1]), TranspileNode(node.Inner[0]))
 	case "round_def":
-		res += "("
-		res += strings.TrimSuffix(strings.ReplaceAll(TranspileNodes(node.Inner), "var ", ""), " ")
-		res += ")"
+		fmt.Sprintf("(%s)", strings.TrimSuffix(strings.ReplaceAll(TranspileNodes(node.Inner), "var ", ""), " "))
 	case "asm":
 		if node.Inner[0].Text == "map" && len(node.Inner) == 4 {
 			wyst_map = append(wyst_map, wmap{node.Inner[1].Text, node.Inner[2].Text})
 		}
+	case "call_tree":
+		for i, c := range node.Inner {
+			res += TranspileNode(c)
+			if i+1 < len(node.Inner) {
+				res += "."
+			}
+		}
+
+	case "fn_call":
+		res += TranspileNode(node.Inner[0])
+		res += TranspileNode(node.Inner[1])
+
+	case "round_call":
+		res += fmt.Sprintf("(%s)", TranspileNodes(node.Inner))
 
 	default:
 		fmt.Printf("\x1b[33mDEV NOTICE:\x1b[0m Missing case for '%s'\n", node.Rule)
diff --git a/test/main.wst b/test/main.wst
index 632016f..79a589f 100644
--- a/test/main.wst
+++ b/test/main.wst
@@ -1,2 +1,5 @@
-%map test, hi;
-int main(test x) {}
\ No newline at end of file
+%map _, _;
+
+int main(test x) {
+    x::h.y.z(0, "test");
+}
\ No newline at end of file