execute语法

Author: Alumopper

src/main/antlr/mcfppLexer.g4

@@ -74,6 +74,7 @@ TRY:'try';
 STORE:'store';
 AS:'as';
 FROM:'from';
+EXECUTE:'execute';
 
 BREAK:'break';
 CONTINUE:'continue';
@@ -191,6 +192,11 @@ FloatConstant
     | FractionalConstant ExponentPart? NBTFloatSuffix?
     ;
 
+RelativeValue
+    :   '~' IntegerConstant
+    |   '~' FloatConstant
+    ;
+
 BooleanConstant
     :   'true'
     |   'false'

src/main/antlr/mcfppParser.g4

@@ -407,6 +407,15 @@ statement
     |   controlStatement ';'
     |   orgCommand
     |   returnStatement ';'
+    |   executeStatement
+    ;
+
+executeStatement
+    :   EXECUTE '(' executeContext (',' executeContext)* ')' block
+    ;
+
+executeContext
+    :   varWithSelector '=' expression
     ;
 
 orgCommand
@@ -526,6 +535,7 @@ functionReturnType
 value
     :   intValue
     |   floatValue
+    |   RelativeValue
     |   LineString
     |   boolValue
     |   multiLineStringLiteral