sw/AntlrAssignment3Template
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refactor

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404Simon 2024-03-20 14:50:24 +01:00
parent d6b4b41d3c
commit 968189a100
4 changed files with 16 additions and 26 deletions
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16
pom.xml
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@ -32,22 +32,6 @@
<build> <build>
<plugins> <plugins>
<plugin> <!-- ANTLR parser generation -->
<groupId>org.antlr</groupId>
<artifactId>antlr4-maven-plugin</artifactId>
<version>4.11.1</version>
<configuration>
<visitor>true</visitor>
</configuration>
<executions>
<execution>
<id>antlr</id>
<goals>
<goal>antlr4</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle --> <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
<plugin> <plugin>
<artifactId>maven-clean-plugin</artifactId> <artifactId>maven-clean-plugin</artifactId>

1
src/main/java/de/dhbw/horb/ASTGenerator.java
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@ -1,5 +1,6 @@
package de.dhbw.horb; package de.dhbw.horb;
import de.dhbw.horb.antlr.DecafParser; import de.dhbw.horb.antlr.DecafParser;
import de.dhbw.horb.ast.*; import de.dhbw.horb.ast.*;

22
src/main/java/de/dhbw/horb/ExpressionGenerator.java
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@ -6,6 +6,7 @@ import de.dhbw.horb.ast.*;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.List; import java.util.List;
import java.util.Optional;
public class ExpressionGenerator extends DecafBaseVisitor<Expression> { public class ExpressionGenerator extends DecafBaseVisitor<Expression> {
@Override @Override
@ -15,7 +16,7 @@ public class ExpressionGenerator extends DecafBaseVisitor<Expression> {
@Override @Override
public Expression visitFunCallExpression(DecafParser.FunCallExpressionContext ctx) { public Expression visitFunCallExpression(DecafParser.FunCallExpressionContext ctx) {
return new FunctionCall(ctx.funcCall().id().getText(), ctx.funcCall().args().expr().stream().map(arg -> arg.accept(this)).toList()); return new FunctionCall(ctx.funcCall().id().getText(), Optional.of(ctx.funcCall().args()).map(arg -> arg.expr().stream().map(this::visit).toList()).orElseGet(ArrayList::new));
} }
@Override @Override
@ -35,25 +36,28 @@ public class ExpressionGenerator extends DecafBaseVisitor<Expression> {
return generateLocation(ctx.loc()); return generateLocation(ctx.loc());
} }
public static Expression generateConstant(DecafParser.LiteralContext ctx){ public static Expression generateConstant(DecafParser.LiteralContext ctx) {
if(ctx.number() != null) if (ctx.number() != null)
return new IntConstant(Integer.valueOf(ctx.number().getText())); return new IntConstant(Integer.valueOf(ctx.number().getText()));
if(ctx.boolean_() != null) if (ctx.boolean_() != null)
return new BoolConstant(Boolean.valueOf(ctx.boolean_().getText())); return new BoolConstant(Boolean.valueOf(ctx.boolean_().getText()));
throw new RuntimeException(); throw new RuntimeException();
} }
public static Operator generateOperator(DecafParser.BinaryOpContext ctx){
if(ctx.ADD() != null)return Operator.ADD; public static Operator generateOperator(DecafParser.BinaryOpContext ctx) {
if(ctx.SUB() != null)return Operator.SUB; if (ctx.ADD() != null) return Operator.ADD;
if(ctx.MUL() != null)return Operator.MUL; if (ctx.SUB() != null) return Operator.SUB;
if (ctx.MUL() != null) return Operator.MUL;
throw new RuntimeException(); throw new RuntimeException();
} }
public static Binary generateBinary(DecafParser.BinaryOperationContext ctx){
public static Binary generateBinary(DecafParser.BinaryOperationContext ctx) {
ExpressionGenerator eGen = new ExpressionGenerator(); ExpressionGenerator eGen = new ExpressionGenerator();
return new Binary(eGen.visit(ctx.expr().get(0)) // left side return new Binary(eGen.visit(ctx.expr().get(0)) // left side
, generateOperator(ctx.binaryOp()) //operator , generateOperator(ctx.binaryOp()) //operator
, eGen.visit(ctx.expr().get(1))); //right side , eGen.visit(ctx.expr().get(1))); //right side
} }
public static Location generateLocation(DecafParser.LocContext loc) { public static Location generateLocation(DecafParser.LocContext loc) {
return new Location(loc.id().getText()); return new Location(loc.id().getText());
} }

3
src/main/java/de/dhbw/horb/StatementGenerator.java
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@ -5,6 +5,7 @@ import de.dhbw.horb.antlr.DecafParser;
import de.dhbw.horb.ast.*; import de.dhbw.horb.ast.*;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Collections;
public class StatementGenerator extends DecafBaseVisitor<Statement> { public class StatementGenerator extends DecafBaseVisitor<Statement> {
@Override @Override
@ -14,7 +15,7 @@ public class StatementGenerator extends DecafBaseVisitor<Statement> {
@Override @Override
public Statement visitIf(DecafParser.IfContext ctx) { public Statement visitIf(DecafParser.IfContext ctx) {
Block elseBlock = new Block(new ArrayList<>(), new ArrayList<>()); Block elseBlock = new Block(Collections.emptyList(), Collections.emptyList());
if (ctx.block().size() > 1) if (ctx.block().size() > 1)
elseBlock = new BlockGenerator().visit(ctx.block(1)); elseBlock = new BlockGenerator().visit(ctx.block(1));
return new IfElse(new ExpressionGenerator().visit(ctx.expr()), new BlockGenerator().visit(ctx.block(0)), elseBlock); return new IfElse(new ExpressionGenerator().visit(ctx.expr()), new BlockGenerator().visit(ctx.block(0)), elseBlock);