antlr4: Implement annotations

Author: hexaredecimal

src/main/antlr4/PiccodeScript.g4

@@ -28,7 +28,7 @@ symbol_lift
 symbol_entry
 : ID (symbol_lift)? ;
 
-declaration: ID CC (module | func | import_module);
+declaration: (annotations)? ID CC (module | func | import_module);
 
 module: 
 	MODULE LBRACE module_stmts RBRACE;
@@ -40,6 +40,8 @@ module_stmt:
 	declaration
 	| var_decl;
 
+annotations: HASH LBRACKET ID (',' ID)* RBRACKET;
+
 func: func_args ASSIGN expr ;
 
 func_args: '(' arg_list? ')' ;
@@ -166,7 +168,7 @@ COMMA: ',';
 SEMI: ';';
 ARROW: '->';
 TILDE: '~';
-
+HASH: '#';
 
 ASSIGN: '=';
 DASSIGN: ':=';

src/main/java/org/piccode/antlr4/PiccodeScript.interp

@@ -29,27 +29,28 @@ COMMA=28
 SEMI=29
 ARROW=30
 TILDE=31
-ASSIGN=32
-DASSIGN=33
-WHEN=34
-IMPORT=35
-IS=36
-IF=37
-ELSE=38
-MODULE=39
-DO=40
-USE=41
-RETURN_TOK=42
-CATCH_TOK=43
-LET=44
-IN=45
-NUMBER=46
-STRING=47
-DOT=48
-LINE_COMMENT=49
-BLOCK_COMMENT=50
-ID=51
-WS=52
+HASH=32
+ASSIGN=33
+DASSIGN=34
+WHEN=35
+IMPORT=36
+IS=37
+IF=38
+ELSE=39
+MODULE=40
+DO=41
+USE=42
+RETURN_TOK=43
+CATCH_TOK=44
+LET=45
+IN=46
+NUMBER=47
+STRING=48
+DOT=49
+LINE_COMMENT=50
+BLOCK_COMMENT=51
+ID=52
+WS=53
 '+'=1
 '-'=2
 '*'=3
@@ -81,18 +82,19 @@ WS=52
 ';'=29
 '->'=30
 '~'=31
-'='=32
-':='=33
-'when'=34
-'import'=35
-'is'=36
-'if'=37
-'else'=38
-'module'=39
-'do'=40
-'use'=41
-'return'=42
-'catch'=43
-'let'=44
-'in'=45
-'.'=48
+'#'=32
+'='=33
+':='=34
+'when'=35
+'import'=36
+'is'=37
+'if'=38
+'else'=39
+'module'=40
+'do'=41
+'use'=42
+'return'=43
+'catch'=44
+'let'=45
+'in'=46
+'.'=49

src/main/java/org/piccode/antlr4/PiccodeScript.tokens

@@ -133,6 +133,18 @@ public class PiccodeScriptBaseListener implements PiccodeScriptListener {
 	 * <p>The default implementation does nothing.</p>
 	 */
 	@Override public void exitModule_stmt(PiccodeScriptParser.Module_stmtContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void enterAnnotations(PiccodeScriptParser.AnnotationsContext ctx) { }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation does nothing.</p>
+	 */
+	@Override public void exitAnnotations(PiccodeScriptParser.AnnotationsContext ctx) { }
 	/**
 	 * {@inheritDoc}
 	 *

src/main/java/org/piccode/antlr4/PiccodeScriptBaseListener.java

@@ -83,6 +83,13 @@ public class PiccodeScriptBaseVisitor<T> extends AbstractParseTreeVisitor<T> imp
 	 * {@link #visitChildren} on {@code ctx}.</p>
 	 */
 	@Override public T visitModule_stmt(PiccodeScriptParser.Module_stmtContext ctx) { return visitChildren(ctx); }
+	/**
+	 * {@inheritDoc}
+	 *
+	 * <p>The default implementation returns the result of calling
+	 * {@link #visitChildren} on {@code ctx}.</p>
+	 */
+	@Override public T visitAnnotations(PiccodeScriptParser.AnnotationsContext ctx) { return visitChildren(ctx); }
 	/**
 	 * {@inheritDoc}
 	 *

src/main/java/org/piccode/antlr4/PiccodeScriptBaseVisitor.java

@@ -29,27 +29,28 @@ COMMA=28
 SEMI=29
 ARROW=30
 TILDE=31
-ASSIGN=32
-DASSIGN=33
-WHEN=34
-IMPORT=35
-IS=36
-IF=37
-ELSE=38
-MODULE=39
-DO=40
-USE=41
-RETURN_TOK=42
-CATCH_TOK=43
-LET=44
-IN=45
-NUMBER=46
-STRING=47
-DOT=48
-LINE_COMMENT=49
-BLOCK_COMMENT=50
-ID=51
-WS=52
+HASH=32
+ASSIGN=33
+DASSIGN=34
+WHEN=35
+IMPORT=36
+IS=37
+IF=38
+ELSE=39
+MODULE=40
+DO=41
+USE=42
+RETURN_TOK=43
+CATCH_TOK=44
+LET=45
+IN=46
+NUMBER=47
+STRING=48
+DOT=49
+LINE_COMMENT=50
+BLOCK_COMMENT=51
+ID=52
+WS=53
 '+'=1
 '-'=2
 '*'=3
@@ -81,18 +82,19 @@ WS=52
 ';'=29
 '->'=30
 '~'=31
-'='=32
-':='=33
-'when'=34
-'import'=35
-'is'=36
-'if'=37
-'else'=38
-'module'=39
-'do'=40
-'use'=41
-'return'=42
-'catch'=43
-'let'=44
-'in'=45
-'.'=48
+'#'=32
+'='=33
+':='=34
+'when'=35
+'import'=36
+'is'=37
+'if'=38
+'else'=39
+'module'=40
+'do'=41
+'use'=42
+'return'=43
+'catch'=44
+'let'=45
+'in'=46
+'.'=49

src/main/java/org/piccode/antlr4/PiccodeScriptLexer.interp

@@ -109,6 +109,16 @@ public interface PiccodeScriptListener extends ParseTreeListener {
 	 * @param ctx the parse tree
 	 */
 	void exitModule_stmt(PiccodeScriptParser.Module_stmtContext ctx);
+	/**
+	 * Enter a parse tree produced by {@link PiccodeScriptParser#annotations}.
+	 * @param ctx the parse tree
+	 */
+	void enterAnnotations(PiccodeScriptParser.AnnotationsContext ctx);
+	/**
+	 * Exit a parse tree produced by {@link PiccodeScriptParser#annotations}.
+	 * @param ctx the parse tree
+	 */
+	void exitAnnotations(PiccodeScriptParser.AnnotationsContext ctx);
 	/**
 	 * Enter a parse tree produced by {@link PiccodeScriptParser#func}.
 	 * @param ctx the parse tree