diff --git a/src/main/java/Compiler.java b/src/main/java/Compiler.java index 28e65da..2f9f210 100644 --- a/src/main/java/Compiler.java +++ b/src/main/java/Compiler.java @@ -1,5 +1,6 @@ import abstractSyntaxTree.Class.RefType; import abstractSyntaxTree.Program; +import astGenerator.ASTGenerator; import gen.DecafLexer; import gen.DecafParser; import org.antlr.v4.runtime.CharStream; diff --git a/src/main/java/ASTGenerator.java b/src/main/java/astGenerator/ASTGenerator.java similarity index 73% rename from src/main/java/ASTGenerator.java rename to src/main/java/astGenerator/ASTGenerator.java index 0d9570f..24e582f 100644 --- a/src/main/java/ASTGenerator.java +++ b/src/main/java/astGenerator/ASTGenerator.java @@ -1,5 +1,6 @@ +package astGenerator; + import abstractSyntaxTree.Class.FieldDecl; -import abstractSyntaxTree.Class.IClass; import abstractSyntaxTree.Class.MethodDecl; import abstractSyntaxTree.Class.RefType; import abstractSyntaxTree.Expression.BinaryExpression; @@ -8,10 +9,10 @@ import abstractSyntaxTree.Parameter.Parameter; import abstractSyntaxTree.Parameter.ParameterList; import abstractSyntaxTree.Program; import abstractSyntaxTree.Statement.*; +import abstractSyntaxTree.StatementExpression.AssignStatementExpression; import gen.DecafBaseVisitor; import gen.DecafParser; -import java.beans.Expression; import java.util.ArrayList; import java.util.List; @@ -33,6 +34,7 @@ public class ASTGenerator extends DecafBaseVisitor { boolean hasMain; if(ctx.MainMethodDecl() != null) { hasMain = true; + MethodDecl mainMethod = new MethodDecl(name, "void", "main", new ParameterList(new ArrayList<>()), new BlockStatement(new ArrayList<>(), "void")); } else { hasMain = false; } @@ -68,13 +70,14 @@ public class ASTGenerator extends DecafBaseVisitor { public Node visitMethodDecl(DecafParser.MethodDeclContext ctx) { String type; String name = ctx.Identifier().getText(); + BlockStatement block = (BlockStatement) visitBlock(ctx.block()); ParameterList parameterList = (ParameterList) visit(ctx.parameterList()); if (ctx.Void() != null) { type = "void"; } else { type = ctx.type().getText(); } - return new MethodDecl("", type , name, parameterList, new BlockStatement(new ArrayList<>(), "void")); + return new MethodDecl("", type , name, parameterList, block); } @Override @@ -103,6 +106,8 @@ public class ASTGenerator extends DecafBaseVisitor { return visitBlock(ctx.block()); } else if (ctx.stmtExpr() != null) { return visitStmtExpr(ctx.stmtExpr()); + } else if (ctx.emptyStatement() != null) { + return visitEmptyStatement(ctx.emptyStatement()); } return null; } @@ -112,6 +117,16 @@ public class ASTGenerator extends DecafBaseVisitor { return new ReturnStatement(new BinaryExpression()); } + @Override + public Node visitBlock(DecafParser.BlockContext ctx) { + List stmts = new ArrayList<>(); + for (DecafParser.StatementContext stmt: ctx.statement()) { + Node statement = visitStatement(stmt); + stmts.add((IStatement) statement); + } + return new BlockStatement(stmts, "void"); + } + @Override public Node visitIfElseStmt(DecafParser.IfElseStmtContext ctx) { if (ctx.elseStmt() != null) { @@ -134,4 +149,37 @@ public class ASTGenerator extends DecafBaseVisitor { Node statement = visitStatement(ctx.statement()); return new WhileStatement(new BinaryExpression(), (IStatement) statement); } + + @Override + public Node visitEmptyStatement(DecafParser.EmptyStatementContext ctx) { + return new EmptyStatement(); + } + + @Override + public Node visitStmtExpr(DecafParser.StmtExprContext ctx) { + if (ctx.assign() != null) { + return visitAssign(ctx.assign()); + } else if (ctx.methodCall() != null) { + return visitMethodCall(ctx.methodCall()); + } else if (ctx.newDecl() != null) { + return visitNewDecl(ctx.newDecl()); + } + return null; + } + + + @Override + public Node visitAssign(DecafParser.AssignContext ctx) { + return new AssignStatementExpression(); + } + + @Override + public Node visitMethodCall(DecafParser.MethodCallContext ctx) { + return super.visitMethodCall(ctx); + } + + @Override + public Node visitNewDecl(DecafParser.NewDeclContext ctx) { + return super.visitNewDecl(ctx); + } } diff --git a/src/main/java/gen/Decaf.interp b/src/main/java/gen/Decaf.interp index 216c5a2..7e784ba 100644 --- a/src/main/java/gen/Decaf.interp +++ b/src/main/java/gen/Decaf.interp @@ -127,9 +127,10 @@ assign newDecl receiver receivingMethod +emptyStatement type value atn: -[4, 1, 45, 327, 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, 2, 16, 7, 16, 2, 17, 7, 17, 2, 18, 7, 18, 2, 19, 7, 19, 2, 20, 7, 20, 2, 21, 7, 21, 2, 22, 7, 22, 2, 23, 7, 23, 2, 24, 7, 24, 2, 25, 7, 25, 2, 26, 7, 26, 2, 27, 7, 27, 2, 28, 7, 28, 2, 29, 7, 29, 2, 30, 7, 30, 2, 31, 7, 31, 2, 32, 7, 32, 2, 33, 7, 33, 1, 0, 4, 0, 70, 8, 0, 11, 0, 12, 0, 71, 1, 1, 3, 1, 75, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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326, 65, 1, 0, 0, 0, 327, 328, 7, 1, 0, 0, 328, 67, 1, 0, 0, 0, 329, 330, 7, 2, 0, 0, 330, 69, 1, 0, 0, 0, 34, 73, 76, 84, 86, 91, 96, 101, 107, 111, 116, 126, 133, 140, 142, 146, 155, 158, 163, 182, 187, 191, 196, 203, 208, 218, 228, 239, 250, 260, 263, 269, 277, 290, 315] \ No newline at end of file diff --git a/src/main/java/gen/DecafBaseListener.java b/src/main/java/gen/DecafBaseListener.java index 8fe7173..b7e94df 100644 --- a/src/main/java/gen/DecafBaseListener.java +++ b/src/main/java/gen/DecafBaseListener.java @@ -396,6 +396,18 @@ public class DecafBaseListener implements DecafListener { *

The default implementation does nothing.

*/ @Override public void exitReceivingMethod(DecafParser.ReceivingMethodContext ctx) { } + /** + * {@inheritDoc} + * + *

The default implementation does nothing.

+ */ + @Override public void enterEmptyStatement(DecafParser.EmptyStatementContext ctx) { } + /** + * {@inheritDoc} + * + *

The default implementation does nothing.

+ */ + @Override public void exitEmptyStatement(DecafParser.EmptyStatementContext ctx) { } /** * {@inheritDoc} * diff --git a/src/main/java/gen/DecafBaseVisitor.java b/src/main/java/gen/DecafBaseVisitor.java index 7af57fe..938151d 100644 --- a/src/main/java/gen/DecafBaseVisitor.java +++ b/src/main/java/gen/DecafBaseVisitor.java @@ -236,6 +236,13 @@ public class DecafBaseVisitor extends AbstractParseTreeVisitor implements * {@link #visitChildren} on {@code ctx}.

*/ @Override public T visitReceivingMethod(DecafParser.ReceivingMethodContext ctx) { return visitChildren(ctx); } + /** + * {@inheritDoc} + * + *

The default implementation returns the result of calling + * {@link #visitChildren} on {@code ctx}.

+ */ + @Override public T visitEmptyStatement(DecafParser.EmptyStatementContext ctx) { return visitChildren(ctx); } /** * {@inheritDoc} * diff --git a/src/main/java/gen/DecafListener.java b/src/main/java/gen/DecafListener.java index 5e24f01..1009cd4 100644 --- a/src/main/java/gen/DecafListener.java +++ b/src/main/java/gen/DecafListener.java @@ -327,6 +327,16 @@ public interface DecafListener extends ParseTreeListener { * @param ctx the parse tree */ void exitReceivingMethod(DecafParser.ReceivingMethodContext ctx); + /** + * Enter a parse tree produced by {@link DecafParser#emptyStatement}. + * @param ctx the parse tree + */ + void enterEmptyStatement(DecafParser.EmptyStatementContext ctx); + /** + * Exit a parse tree produced by {@link DecafParser#emptyStatement}. + * @param ctx the parse tree + */ + void exitEmptyStatement(DecafParser.EmptyStatementContext ctx); /** * Enter a parse tree produced by {@link DecafParser#type}. * @param ctx the parse tree diff --git a/src/main/java/gen/DecafParser.java b/src/main/java/gen/DecafParser.java index 240e011..e95bd8f 100644 --- a/src/main/java/gen/DecafParser.java +++ b/src/main/java/gen/DecafParser.java @@ -34,7 +34,7 @@ public class DecafParser extends Parser { RULE_nonCalcOperator = 20, RULE_returnStmt = 21, RULE_localVarDecl = 22, RULE_block = 23, RULE_whileStmt = 24, RULE_ifElseStmt = 25, RULE_ifStmt = 26, RULE_elseStmt = 27, RULE_assign = 28, RULE_newDecl = 29, RULE_receiver = 30, - RULE_receivingMethod = 31, RULE_type = 32, RULE_value = 33; + RULE_receivingMethod = 31, RULE_emptyStatement = 32, RULE_type = 33, RULE_value = 34; private static String[] makeRuleNames() { return new String[] { "program", "classdecl", "constuctorDecl", "methodDecl", "parameterList", @@ -42,8 +42,8 @@ public class DecafParser extends Parser { "statement", "stmtExpr", "assignableExpr", "subReceiver", "instVar", "binaryExpr", "calcExpr", "dotExpr", "dotSubExpr", "nonCalcExpr", "nonCalcOperator", "returnStmt", "localVarDecl", "block", "whileStmt", "ifElseStmt", "ifStmt", - "elseStmt", "assign", "newDecl", "receiver", "receivingMethod", "type", - "value" + "elseStmt", "assign", "newDecl", "receiver", "receivingMethod", "emptyStatement", + "type", "value" }; } public static final String[] ruleNames = makeRuleNames(); @@ -156,17 +156,17 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(69); + setState(71); _errHandler.sync(this); _la = _input.LA(1); do { { { - setState(68); + setState(70); classdecl(); } } - setState(71); + setState(73); _errHandler.sync(this); _la = _input.LA(1); } while ( _la==AccessModifierPublic || _la==Class ); @@ -238,67 +238,67 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(74); + setState(76); _errHandler.sync(this); _la = _input.LA(1); if (_la==AccessModifierPublic) { { - setState(73); + setState(75); match(AccessModifierPublic); } } - setState(76); - match(Class); - setState(77); - match(Identifier); setState(78); + match(Class); + setState(79); + match(Identifier); + setState(80); match(OpenCurlyBracket); - setState(84); + setState(86); _errHandler.sync(this); _la = _input.LA(1); while ((((_la) & ~0x3f) == 0 && ((1L << _la) & 17592186044904L) != 0)) { { - setState(82); + setState(84); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,2,_ctx) ) { case 1: { - setState(79); + setState(81); constuctorDecl(); } break; case 2: { - setState(80); + setState(82); localVarDecl(); } break; case 3: { - setState(81); + setState(83); methodDecl(); } break; } } - setState(86); + setState(88); _errHandler.sync(this); _la = _input.LA(1); } - setState(89); + setState(91); _errHandler.sync(this); _la = _input.LA(1); if (_la==MainMethodDecl) { { - setState(87); + setState(89); match(MainMethodDecl); - setState(88); + setState(90); block(); } } - setState(91); + setState(93); match(ClosedCurlyBracket); } } @@ -351,33 +351,33 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(94); + setState(96); _errHandler.sync(this); _la = _input.LA(1); if (_la==AccessModifierPublic) { { - setState(93); + setState(95); match(AccessModifierPublic); } } - setState(96); + setState(98); match(Identifier); - setState(97); - match(OpenRoundBracket); setState(99); + match(OpenRoundBracket); + setState(101); _errHandler.sync(this); _la = _input.LA(1); if ((((_la) & ~0x3f) == 0 && ((1L << _la) & 17592186044864L) != 0)) { { - setState(98); + setState(100); parameterList(); } } - setState(101); + setState(103); match(ClosedRoundBracket); - setState(102); + setState(104); block(); } } @@ -434,17 +434,17 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(105); + setState(107); _errHandler.sync(this); _la = _input.LA(1); if (_la==AccessModifierPublic) { { - setState(104); + setState(106); match(AccessModifierPublic); } } - setState(109); + setState(111); _errHandler.sync(this); switch (_input.LA(1)) { case Int: @@ -452,36 +452,36 @@ public class DecafParser extends Parser { case Char: case Identifier: { - setState(107); + setState(109); type(); } break; case Void: { - setState(108); + setState(110); match(Void); } break; default: throw new NoViableAltException(this); } - setState(111); + setState(113); match(Identifier); - setState(112); - match(OpenRoundBracket); setState(114); + match(OpenRoundBracket); + setState(116); _errHandler.sync(this); _la = _input.LA(1); if ((((_la) & ~0x3f) == 0 && ((1L << _la) & 17592186044864L) != 0)) { { - setState(113); + setState(115); parameterList(); } } - setState(116); + setState(118); match(ClosedRoundBracket); - setState(117); + setState(119); block(); } } @@ -534,21 +534,21 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(119); + setState(121); parameter(); - setState(124); + setState(126); _errHandler.sync(this); _la = _input.LA(1); while (_la==Comma) { { { - setState(120); + setState(122); match(Comma); - setState(121); + setState(123); parameter(); } } - setState(126); + setState(128); _errHandler.sync(this); _la = _input.LA(1); } @@ -596,9 +596,9 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(127); + setState(129); type(); - setState(128); + setState(130); match(Identifier); } } @@ -649,18 +649,18 @@ public class DecafParser extends Parser { enterRule(_localctx, 12, RULE_argumentList); int _la; try { - setState(140); + setState(142); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,13,_ctx) ) { case 1: enterOuterAlt(_localctx, 1); { - setState(131); + setState(133); _errHandler.sync(this); _la = _input.LA(1); if ((((_la) & ~0x3f) == 0 && ((1L << _la) & 33054638735366L) != 0)) { { - setState(130); + setState(132); expression(); } } @@ -670,21 +670,21 @@ public class DecafParser extends Parser { case 2: enterOuterAlt(_localctx, 2); { - setState(133); + setState(135); expression(); - setState(136); + setState(138); _errHandler.sync(this); _la = _input.LA(1); do { { { - setState(134); + setState(136); match(Comma); - setState(135); + setState(137); expression(); } } - setState(138); + setState(140); _errHandler.sync(this); _la = _input.LA(1); } while ( _la==Comma ); @@ -734,20 +734,20 @@ public class DecafParser extends Parser { ExpressionContext _localctx = new ExpressionContext(_ctx, getState()); enterRule(_localctx, 14, RULE_expression); try { - setState(144); + setState(146); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,14,_ctx) ) { case 1: enterOuterAlt(_localctx, 1); { - setState(142); + setState(144); subExpression(); } break; case 2: enterOuterAlt(_localctx, 2); { - setState(143); + setState(145); binaryExpr(); } break; @@ -801,38 +801,38 @@ public class DecafParser extends Parser { SubExpressionContext _localctx = new SubExpressionContext(_ctx, getState()); enterRule(_localctx, 16, RULE_subExpression); try { - setState(153); + setState(155); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,15,_ctx) ) { case 1: enterOuterAlt(_localctx, 1); { - setState(146); + setState(148); match(This); } break; case 2: enterOuterAlt(_localctx, 2); { - setState(147); + setState(149); assignableExpr(); } break; case 3: enterOuterAlt(_localctx, 3); { - setState(148); + setState(150); stmtExpr(); } break; case 4: enterOuterAlt(_localctx, 4); { - setState(149); - match(OpenRoundBracket); - setState(150); - subExpression(); setState(151); + match(OpenRoundBracket); + setState(152); + subExpression(); + setState(153); match(ClosedRoundBracket); } break; @@ -892,39 +892,39 @@ public class DecafParser extends Parser { int _alt; enterOuterAlt(_localctx, 1); { - setState(156); + setState(158); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,16,_ctx) ) { case 1: { - setState(155); + setState(157); receiver(); } break; } - setState(161); + setState(163); _errHandler.sync(this); _alt = getInterpreter().adaptivePredict(_input,17,_ctx); while ( _alt!=2 && _alt!=org.antlr.v4.runtime.atn.ATN.INVALID_ALT_NUMBER ) { if ( _alt==1 ) { { { - setState(158); + setState(160); receivingMethod(); } } } - setState(163); + setState(165); _errHandler.sync(this); _alt = getInterpreter().adaptivePredict(_input,17,_ctx); } - setState(164); - match(Identifier); - setState(165); - match(OpenRoundBracket); setState(166); - argumentList(); + match(Identifier); setState(167); + match(OpenRoundBracket); + setState(168); + argumentList(); + setState(169); match(ClosedRoundBracket); } } @@ -960,6 +960,9 @@ public class DecafParser extends Parser { public StmtExprContext stmtExpr() { return getRuleContext(StmtExprContext.class,0); } + public EmptyStatementContext emptyStatement() { + return getRuleContext(EmptyStatementContext.class,0); + } public StatementContext(ParserRuleContext parent, int invokingState) { super(parent, invokingState); } @@ -983,25 +986,23 @@ public class DecafParser extends Parser { StatementContext _localctx = new StatementContext(_ctx, getState()); enterRule(_localctx, 20, RULE_statement); try { - setState(181); + setState(182); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,18,_ctx) ) { case 1: enterOuterAlt(_localctx, 1); { - setState(169); + setState(171); returnStmt(); - setState(170); + setState(172); match(Semicolon); } break; case 2: enterOuterAlt(_localctx, 2); { - setState(172); + setState(174); localVarDecl(); - setState(173); - match(Semicolon); } break; case 3: @@ -1034,6 +1035,13 @@ public class DecafParser extends Parser { match(Semicolon); } break; + case 7: + enterOuterAlt(_localctx, 7); + { + setState(181); + emptyStatement(); + } + break; } } catch (RecognitionException re) { @@ -1081,27 +1089,27 @@ public class DecafParser extends Parser { StmtExprContext _localctx = new StmtExprContext(_ctx, getState()); enterRule(_localctx, 22, RULE_stmtExpr); try { - setState(186); + setState(187); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,19,_ctx) ) { case 1: enterOuterAlt(_localctx, 1); { - setState(183); + setState(184); assign(); } break; case 2: enterOuterAlt(_localctx, 2); { - setState(184); + setState(185); newDecl(); } break; case 3: enterOuterAlt(_localctx, 3); { - setState(185); + setState(186); methodCall(); } break; @@ -1147,20 +1155,20 @@ public class DecafParser extends Parser { AssignableExprContext _localctx = new AssignableExprContext(_ctx, getState()); enterRule(_localctx, 24, RULE_assignableExpr); try { - setState(190); + setState(191); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,20,_ctx) ) { case 1: enterOuterAlt(_localctx, 1); { - setState(188); + setState(189); match(Identifier); } break; case 2: enterOuterAlt(_localctx, 2); { - setState(189); + setState(190); instVar(); } break; @@ -1211,31 +1219,31 @@ public class DecafParser extends Parser { enterOuterAlt(_localctx, 1); { { - setState(195); + setState(196); _errHandler.sync(this); switch (_input.LA(1)) { case This: { - setState(192); + setState(193); match(This); } break; case New: { - setState(193); + setState(194); newDecl(); } break; case Identifier: { - setState(194); + setState(195); match(Identifier); } break; default: throw new NoViableAltException(this); } - setState(197); + setState(198); match(Dot); } } @@ -1254,8 +1262,11 @@ public class DecafParser extends Parser { @SuppressWarnings("CheckReturnValue") public static class InstVarContext extends ParserRuleContext { public TerminalNode Identifier() { return getToken(DecafParser.Identifier, 0); } - public SubReceiverContext subReceiver() { - return getRuleContext(SubReceiverContext.class,0); + public List subReceiver() { + return getRuleContexts(SubReceiverContext.class); + } + public SubReceiverContext subReceiver(int i) { + return getRuleContext(SubReceiverContext.class,i); } public List receivingMethod() { return getRuleContexts(ReceivingMethodContext.class); @@ -1289,33 +1300,43 @@ public class DecafParser extends Parser { int _alt; enterOuterAlt(_localctx, 1); { - setState(200); + setState(201); _errHandler.sync(this); - switch ( getInterpreter().adaptivePredict(_input,22,_ctx) ) { - case 1: - { - setState(199); - subReceiver(); + _alt = 1; + do { + switch (_alt) { + case 1: + { + { + setState(200); + subReceiver(); + } + } + break; + default: + throw new NoViableAltException(this); } - break; - } - setState(205); + setState(203); + _errHandler.sync(this); + _alt = getInterpreter().adaptivePredict(_input,22,_ctx); + } while ( _alt!=2 && _alt!=org.antlr.v4.runtime.atn.ATN.INVALID_ALT_NUMBER ); + setState(208); _errHandler.sync(this); _alt = getInterpreter().adaptivePredict(_input,23,_ctx); while ( _alt!=2 && _alt!=org.antlr.v4.runtime.atn.ATN.INVALID_ALT_NUMBER ) { if ( _alt==1 ) { { { - setState(202); + setState(205); receivingMethod(); } } } - setState(207); + setState(210); _errHandler.sync(this); _alt = getInterpreter().adaptivePredict(_input,23,_ctx); } - setState(208); + setState(211); match(Identifier); } } @@ -1368,36 +1389,36 @@ public class DecafParser extends Parser { BinaryExprContext _localctx = new BinaryExprContext(_ctx, getState()); enterRule(_localctx, 30, RULE_binaryExpr); try { - setState(215); + setState(218); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,24,_ctx) ) { case 1: enterOuterAlt(_localctx, 1); { - setState(210); + setState(213); calcExpr(0); } break; case 2: enterOuterAlt(_localctx, 2); { - setState(211); + setState(214); nonCalcExpr(); } break; case 3: enterOuterAlt(_localctx, 3); { - setState(212); + setState(215); value(); } break; case 4: enterOuterAlt(_localctx, 4); { - setState(213); + setState(216); match(Not); - setState(214); + setState(217); binaryExpr(); } break; @@ -1458,11 +1479,11 @@ public class DecafParser extends Parser { enterOuterAlt(_localctx, 1); { { - setState(218); + setState(221); dotExpr(0); } _ctx.stop = _input.LT(-1); - setState(225); + setState(228); _errHandler.sync(this); _alt = getInterpreter().adaptivePredict(_input,25,_ctx); while ( _alt!=2 && _alt!=org.antlr.v4.runtime.atn.ATN.INVALID_ALT_NUMBER ) { @@ -1473,16 +1494,16 @@ public class DecafParser extends Parser { { _localctx = new CalcExprContext(_parentctx, _parentState); pushNewRecursionContext(_localctx, _startState, RULE_calcExpr); - setState(220); + setState(223); if (!(precpred(_ctx, 2))) throw new FailedPredicateException(this, "precpred(_ctx, 2)"); - setState(221); + setState(224); match(LineOperator); - setState(222); + setState(225); dotExpr(0); } } } - setState(227); + setState(230); _errHandler.sync(this); _alt = getInterpreter().adaptivePredict(_input,25,_ctx); } @@ -1543,11 +1564,11 @@ public class DecafParser extends Parser { enterOuterAlt(_localctx, 1); { { - setState(229); + setState(232); dotSubExpr(); } _ctx.stop = _input.LT(-1); - setState(236); + setState(239); _errHandler.sync(this); _alt = getInterpreter().adaptivePredict(_input,26,_ctx); while ( _alt!=2 && _alt!=org.antlr.v4.runtime.atn.ATN.INVALID_ALT_NUMBER ) { @@ -1558,16 +1579,16 @@ public class DecafParser extends Parser { { _localctx = new DotExprContext(_parentctx, _parentState); pushNewRecursionContext(_localctx, _startState, RULE_dotExpr); - setState(231); + setState(234); if (!(precpred(_ctx, 2))) throw new FailedPredicateException(this, "precpred(_ctx, 2)"); - setState(232); + setState(235); match(DotOperator); - setState(233); + setState(236); dotSubExpr(); } } } - setState(238); + setState(241); _errHandler.sync(this); _alt = getInterpreter().adaptivePredict(_input,26,_ctx); } @@ -1622,45 +1643,45 @@ public class DecafParser extends Parser { DotSubExprContext _localctx = new DotSubExprContext(_ctx, getState()); enterRule(_localctx, 36, RULE_dotSubExpr); try { - setState(247); + setState(250); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,27,_ctx) ) { case 1: enterOuterAlt(_localctx, 1); { - setState(239); + setState(242); match(IntValue); } break; case 2: enterOuterAlt(_localctx, 2); { - setState(240); + setState(243); match(Identifier); } break; case 3: enterOuterAlt(_localctx, 3); { - setState(241); + setState(244); instVar(); } break; case 4: enterOuterAlt(_localctx, 4); { - setState(242); + setState(245); methodCall(); } break; case 5: enterOuterAlt(_localctx, 5); { - setState(243); + setState(246); match(OpenRoundBracket); - setState(244); + setState(247); calcExpr(0); - setState(245); + setState(248); match(ClosedRoundBracket); } break; @@ -1713,11 +1734,11 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(249); + setState(252); subExpression(); - setState(250); + setState(253); nonCalcOperator(); - setState(251); + setState(254); expression(); } } @@ -1762,7 +1783,7 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(253); + setState(256); _la = _input.LA(1); if ( !(_la==ComparisonOperator || _la==LogicalOpertor) ) { _errHandler.recoverInline(this); @@ -1817,14 +1838,14 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(255); + setState(258); match(Return); - setState(257); + setState(260); _errHandler.sync(this); _la = _input.LA(1); if ((((_la) & ~0x3f) == 0 && ((1L << _la) & 33054638735366L) != 0)) { { - setState(256); + setState(259); expression(); } } @@ -1880,33 +1901,33 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(260); + setState(263); _errHandler.sync(this); _la = _input.LA(1); if (_la==AccessModifierPublic) { { - setState(259); + setState(262); match(AccessModifierPublic); } } - setState(262); + setState(265); type(); - setState(263); - match(Identifier); setState(266); + match(Identifier); + setState(269); _errHandler.sync(this); _la = _input.LA(1); if (_la==Assign) { { - setState(264); + setState(267); match(Assign); - setState(265); + setState(268); expression(); } } - setState(268); + setState(271); match(Semicolon); } } @@ -1957,23 +1978,23 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(270); + setState(273); match(OpenCurlyBracket); - setState(274); + setState(277); _errHandler.sync(this); _la = _input.LA(1); - while ((((_la) & ~0x3f) == 0 && ((1L << _la) & 21373904749000L) != 0)) { + while ((((_la) & ~0x3f) == 0 && ((1L << _la) & 21382494683592L) != 0)) { { { - setState(271); + setState(274); statement(); } } - setState(276); + setState(279); _errHandler.sync(this); _la = _input.LA(1); } - setState(277); + setState(280); match(ClosedCurlyBracket); } } @@ -2024,15 +2045,15 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(279); - match(While); - setState(280); - match(OpenRoundBracket); - setState(281); - expression(); setState(282); - match(ClosedRoundBracket); + match(While); setState(283); + match(OpenRoundBracket); + setState(284); + expression(); + setState(285); + match(ClosedRoundBracket); + setState(286); statement(); } } @@ -2080,14 +2101,14 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(285); + setState(288); ifStmt(); - setState(287); + setState(290); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,32,_ctx) ) { case 1: { - setState(286); + setState(289); elseStmt(); } break; @@ -2141,15 +2162,15 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(289); - match(If); - setState(290); - match(OpenRoundBracket); - setState(291); - expression(); setState(292); - match(ClosedRoundBracket); + match(If); setState(293); + match(OpenRoundBracket); + setState(294); + expression(); + setState(295); + match(ClosedRoundBracket); + setState(296); statement(); } } @@ -2195,9 +2216,9 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(295); + setState(298); match(Else); - setState(296); + setState(299); statement(); } } @@ -2246,11 +2267,11 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(298); + setState(301); assignableExpr(); - setState(299); + setState(302); match(Assign); - setState(300); + setState(303); expression(); } } @@ -2299,15 +2320,15 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(302); - match(New); - setState(303); - match(Identifier); - setState(304); - match(OpenRoundBracket); setState(305); - argumentList(); + match(New); setState(306); + match(Identifier); + setState(307); + match(OpenRoundBracket); + setState(308); + argumentList(); + setState(309); match(ClosedRoundBracket); } } @@ -2359,35 +2380,35 @@ public class DecafParser extends Parser { enterOuterAlt(_localctx, 1); { { - setState(312); + setState(315); _errHandler.sync(this); switch ( getInterpreter().adaptivePredict(_input,33,_ctx) ) { case 1: { - setState(308); + setState(311); match(This); } break; case 2: { - setState(309); + setState(312); instVar(); } break; case 3: { - setState(310); + setState(313); newDecl(); } break; case 4: { - setState(311); + setState(314); match(Identifier); } break; } - setState(314); + setState(317); match(Dot); } } @@ -2437,15 +2458,15 @@ public class DecafParser extends Parser { try { enterOuterAlt(_localctx, 1); { - setState(316); - match(Identifier); - setState(317); - match(OpenRoundBracket); - setState(318); - argumentList(); setState(319); - match(ClosedRoundBracket); + match(Identifier); setState(320); + match(OpenRoundBracket); + setState(321); + argumentList(); + setState(322); + match(ClosedRoundBracket); + setState(323); match(Dot); } } @@ -2460,6 +2481,49 @@ public class DecafParser extends Parser { return _localctx; } + @SuppressWarnings("CheckReturnValue") + public static class EmptyStatementContext extends ParserRuleContext { + public TerminalNode Semicolon() { return getToken(DecafParser.Semicolon, 0); } + public EmptyStatementContext(ParserRuleContext parent, int invokingState) { + super(parent, invokingState); + } + @Override public int getRuleIndex() { return RULE_emptyStatement; } + @Override + public void enterRule(ParseTreeListener listener) { + if ( listener instanceof DecafListener ) ((DecafListener)listener).enterEmptyStatement(this); + } + @Override + public void exitRule(ParseTreeListener listener) { + if ( listener instanceof DecafListener ) ((DecafListener)listener).exitEmptyStatement(this); + } + @Override + public T accept(ParseTreeVisitor visitor) { + if ( visitor instanceof DecafVisitor ) return ((DecafVisitor)visitor).visitEmptyStatement(this); + else return visitor.visitChildren(this); + } + } + + public final EmptyStatementContext emptyStatement() throws RecognitionException { + EmptyStatementContext _localctx = new EmptyStatementContext(_ctx, getState()); + enterRule(_localctx, 64, RULE_emptyStatement); + try { + enterOuterAlt(_localctx, 1); + { + setState(325); + match(Semicolon); + } + } + catch (RecognitionException re) { + _localctx.exception = re; + _errHandler.reportError(this, re); + _errHandler.recover(this, re); + } + finally { + exitRule(); + } + return _localctx; + } + @SuppressWarnings("CheckReturnValue") public static class TypeContext extends ParserRuleContext { public TerminalNode Int() { return getToken(DecafParser.Int, 0); } @@ -2487,12 +2551,12 @@ public class DecafParser extends Parser { public final TypeContext type() throws RecognitionException { TypeContext _localctx = new TypeContext(_ctx, getState()); - enterRule(_localctx, 64, RULE_type); + enterRule(_localctx, 66, RULE_type); int _la; try { enterOuterAlt(_localctx, 1); { - setState(322); + setState(327); _la = _input.LA(1); if ( !((((_la) & ~0x3f) == 0 && ((1L << _la) & 17592186044864L) != 0)) ) { _errHandler.recoverInline(this); @@ -2542,12 +2606,12 @@ public class DecafParser extends Parser { public final ValueContext value() throws RecognitionException { ValueContext _localctx = new ValueContext(_ctx, getState()); - enterRule(_localctx, 66, RULE_value); + enterRule(_localctx, 68, RULE_value); int _la; try { enterOuterAlt(_localctx, 1); { - setState(324); + setState(329); _la = _input.LA(1); if ( !((((_la) & ~0x3f) == 0 && ((1L << _la) & 13194139533318L) != 0)) ) { _errHandler.recoverInline(this); @@ -2595,7 +2659,7 @@ public class DecafParser extends Parser { } public static final String _serializedATN = - "\u0004\u0001-\u0147\u0002\u0000\u0007\u0000\u0002\u0001\u0007\u0001\u0002"+ + "\u0004\u0001-\u014c\u0002\u0000\u0007\u0000\u0002\u0001\u0007\u0001\u0002"+ "\u0002\u0007\u0002\u0002\u0003\u0007\u0003\u0002\u0004\u0007\u0004\u0002"+ "\u0005\u0007\u0005\u0002\u0006\u0007\u0006\u0002\u0007\u0007\u0007\u0002"+ "\b\u0007\b\u0002\t\u0007\t\u0002\n\u0007\n\u0002\u000b\u0007\u000b\u0002"+ @@ -2605,204 +2669,207 @@ public class DecafParser extends Parser { "\u0002\u0016\u0007\u0016\u0002\u0017\u0007\u0017\u0002\u0018\u0007\u0018"+ "\u0002\u0019\u0007\u0019\u0002\u001a\u0007\u001a\u0002\u001b\u0007\u001b"+ "\u0002\u001c\u0007\u001c\u0002\u001d\u0007\u001d\u0002\u001e\u0007\u001e"+ - "\u0002\u001f\u0007\u001f\u0002 \u0007 \u0002!\u0007!\u0001\u0000\u0004"+ - "\u0000F\b\u0000\u000b\u0000\f\u0000G\u0001\u0001\u0003\u0001K\b\u0001"+ - "\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001"+ - "\u0005\u0001S\b\u0001\n\u0001\f\u0001V\t\u0001\u0001\u0001\u0001\u0001"+ - "\u0003\u0001Z\b\u0001\u0001\u0001\u0001\u0001\u0001\u0002\u0003\u0002"+ - "_\b\u0002\u0001\u0002\u0001\u0002\u0001\u0002\u0003\u0002d\b\u0002\u0001"+ - "\u0002\u0001\u0002\u0001\u0002\u0001\u0003\u0003\u0003j\b\u0003\u0001"+ - "\u0003\u0001\u0003\u0003\u0003n\b\u0003\u0001\u0003\u0001\u0003\u0001"+ - "\u0003\u0003\u0003s\b\u0003\u0001\u0003\u0001\u0003\u0001\u0003\u0001"+ - "\u0004\u0001\u0004\u0001\u0004\u0005\u0004{\b\u0004\n\u0004\f\u0004~\t"+ - 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"\u0000\f\u008c\u0001\u0000\u0000\u0000\u000e\u0090\u0001\u0000\u0000\u0000"+ - "\u0010\u0099\u0001\u0000\u0000\u0000\u0012\u009c\u0001\u0000\u0000\u0000"+ - "\u0014\u00b5\u0001\u0000\u0000\u0000\u0016\u00ba\u0001\u0000\u0000\u0000"+ - "\u0018\u00be\u0001\u0000\u0000\u0000\u001a\u00c3\u0001\u0000\u0000\u0000"+ - "\u001c\u00c8\u0001\u0000\u0000\u0000\u001e\u00d7\u0001\u0000\u0000\u0000"+ - " \u00d9\u0001\u0000\u0000\u0000\"\u00e4\u0001\u0000\u0000\u0000$\u00f7"+ - "\u0001\u0000\u0000\u0000&\u00f9\u0001\u0000\u0000\u0000(\u00fd\u0001\u0000"+ - "\u0000\u0000*\u00ff\u0001\u0000\u0000\u0000,\u0104\u0001\u0000\u0000\u0000"+ - ".\u010e\u0001\u0000\u0000\u00000\u0117\u0001\u0000\u0000\u00002\u011d"+ - "\u0001\u0000\u0000\u00004\u0121\u0001\u0000\u0000\u00006\u0127\u0001\u0000"+ - "\u0000\u00008\u012a\u0001\u0000\u0000\u0000:\u012e\u0001\u0000\u0000\u0000"+ - "<\u0138\u0001\u0000\u0000\u0000>\u013c\u0001\u0000\u0000\u0000@\u0142"+ - 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"\u0003\f\u0006\u0000\u0135\u0136\u0005\u001e\u0000\u0000\u0136;\u0001"+ + "\u0000\u0000\u0000\u0137\u013c\u0005$\u0000\u0000\u0138\u013c\u0003\u001c"+ + "\u000e\u0000\u0139\u013c\u0003:\u001d\u0000\u013a\u013c\u0005,\u0000\u0000"+ + "\u013b\u0137\u0001\u0000\u0000\u0000\u013b\u0138\u0001\u0000\u0000\u0000"+ + "\u013b\u0139\u0001\u0000\u0000\u0000\u013b\u013a\u0001\u0000\u0000\u0000"+ + "\u013c\u013d\u0001\u0000\u0000\u0000\u013d\u013e\u0005\u001c\u0000\u0000"+ + "\u013e=\u0001\u0000\u0000\u0000\u013f\u0140\u0005,\u0000\u0000\u0140\u0141"+ + "\u0005\u001d\u0000\u0000\u0141\u0142\u0003\f\u0006\u0000\u0142\u0143\u0005"+ + "\u001e\u0000\u0000\u0143\u0144\u0005\u001c\u0000\u0000\u0144?\u0001\u0000"+ + "\u0000\u0000\u0145\u0146\u0005!\u0000\u0000\u0146A\u0001\u0000\u0000\u0000"+ + "\u0147\u0148\u0007\u0001\u0000\u0000\u0148C\u0001\u0000\u0000\u0000\u0149"+ + "\u014a\u0007\u0002\u0000\u0000\u014aE\u0001\u0000\u0000\u0000\"ILTV[`"+ + "ekot~\u0085\u008c\u008e\u0092\u009b\u009e\u00a3\u00b6\u00bb\u00bf\u00c4"+ + "\u00cb\u00d0\u00da\u00e4\u00ef\u00fa\u0104\u0107\u010d\u0115\u0122\u013b"; public static final ATN _ATN = new ATNDeserializer().deserialize(_serializedATN.toCharArray()); static { diff --git a/src/main/java/gen/DecafVisitor.java b/src/main/java/gen/DecafVisitor.java index cfe0332..7d5bd62 100644 --- a/src/main/java/gen/DecafVisitor.java +++ b/src/main/java/gen/DecafVisitor.java @@ -202,6 +202,12 @@ public interface DecafVisitor extends ParseTreeVisitor { * @return the visitor result */ T visitReceivingMethod(DecafParser.ReceivingMethodContext ctx); + /** + * Visit a parse tree produced by {@link DecafParser#emptyStatement}. + * @param ctx the parse tree + * @return the visitor result + */ + T visitEmptyStatement(DecafParser.EmptyStatementContext ctx); /** * Visit a parse tree produced by {@link DecafParser#type}. * @param ctx the parse tree