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QueenParseTreeVisitor.java
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/**
* Copyright (c) 2022-2023, Extremely Distributed Technologies S.R.L. Romania
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
package org.queenlang.transpiler;
import org.antlr.v4.runtime.ParserRuleContext;
import org.antlr.v4.runtime.misc.Interval;
import org.antlr.v4.runtime.tree.ParseTree;
import org.antlr.v4.runtime.tree.TerminalNode;
import org.queenlang.generated.antlr4.QueenParser;
import org.queenlang.generated.antlr4.QueenParserBaseVisitor;
import org.queenlang.transpiler.nodes.*;
import java.util.*;
import java.util.stream.Collectors;
/**
* Queen visitor which traverses the ParseTree and generates the
* Abstract Syntax Tree.
*
* In order to understand the APIs and logic used in this visitor, you
* need to study the QueenParser.g4 ANTLR file, as this visitor is based on
* the ParseTree genertated by ANTLR.
*
* @author Mihai Andronache ([email protected])
* @version $Id$
* @since 0.0.1
*/
public final class QueenParseTreeVisitor extends QueenParserBaseVisitor<QueenNode> {
@Override
public QueenCompilationUnitNode visitCompilationUnit(QueenParser.CompilationUnitContext ctx) {
return new QueenCompilationUnitNode(
getPosition(ctx),
new QueenPackageDeclarationNode(
getPosition(ctx.packageDeclaration()),
() -> {
if(ctx.packageDeclaration() != null) {
QueenParser.PackageNameContext packageNameContext = ctx.packageDeclaration().packageName();
return asString(packageNameContext);
}
return null;
}
),
ctx.importDeclaration().stream().map(
this::visitImportDeclaration
).collect(Collectors.toList()),
List.of(this.visitTypeDeclaration(ctx.typeDeclaration()))
);
}
@Override
public QueenImportDeclarationNode visitImportDeclaration(QueenParser.ImportDeclarationContext ctx) {
String importedType = "";
boolean isStaticImport = false;
boolean isAsteriskImport = false;
final ParseTree importDeclaration = ctx.getChild(0);
if(importDeclaration instanceof QueenParser.SingleTypeImportDeclarationContext) {
importedType = asString(ctx.singleTypeImportDeclaration().typeName());
} else if(importDeclaration instanceof QueenParser.StaticImportOnDemandDeclarationContext) {
importedType = asString(ctx.staticImportOnDemandDeclaration().typeName());
isAsteriskImport = true;
isStaticImport = true;
} else if(importDeclaration instanceof QueenParser.SingleStaticImportDeclarationContext) {
final QueenParser.SingleStaticImportDeclarationContext staticImport = ctx.singleStaticImportDeclaration();
importedType = asString(staticImport.typeName()) + "." + staticImport.Identifier().getText();
isStaticImport = true;
} else if(importDeclaration instanceof QueenParser.TypeImportOnDemandDeclarationContext) {
importedType = asString(ctx.typeImportOnDemandDeclaration().packageOrTypeName());
isAsteriskImport = true;
}
return new QueenImportDeclarationNode(
getPosition(ctx), importedType, isStaticImport, isAsteriskImport
);
}
@Override
public QueenTypeDeclarationNode visitTypeDeclaration(QueenParser.TypeDeclarationContext ctx) {
if(ctx.classDeclaration() != null) {
return this.visitClassDeclaration(ctx.classDeclaration());
} else if(ctx.interfaceDeclaration() != null) {
return this.visitInterfaceDeclaration(ctx.interfaceDeclaration());
}
return null;
}
@Override
public QueenClassDeclarationNode visitClassDeclaration(QueenParser.ClassDeclarationContext ctx) {
final List<QueenAnnotationNode> annotations = new ArrayList<>();
final List<QueenModifierNode> accessModifiers = new ArrayList<>();
final List<QueenTypeParameterNode> typeParameters = new ArrayList<>();
final String name = ctx.Identifier().getText();
if(ctx.typeParameters() != null && ctx.typeParameters().typeParameterList() != null) {
ctx.typeParameters().typeParameterList().typeParameter().forEach(
tp -> typeParameters.add(this.visitTypeParameter(tp))
);
}
final List<QueenClassOrInterfaceTypeNode> ofTypes = new ArrayList<>();
if(ctx.superinterfaces() != null && ctx.superinterfaces().interfaceTypeList() != null) {
ctx.superinterfaces().interfaceTypeList().interfaceType().forEach(
inter -> ofTypes.add(this.visitInterfaceType(inter))
);
}
QueenClassOrInterfaceTypeNode extendsType = null;
if(ctx.superclass() != null) {
extendsType = this.visitSuperclass(ctx.superclass());
}
ctx.annotation().forEach(
a -> annotations.add(this.visitAnnotation(a))
);
ctx.classModifier().forEach(
m -> accessModifiers.add(this.visitClassModifier(m))
);
return new QueenClassDeclarationNode(
this.getPosition(ctx),
annotations,
accessModifiers,
this.visitClassAbstractOrFinal(ctx.classAbstractOrFinal()),
name,
typeParameters,
extendsType,
ofTypes,
new QueenClassBodyNode(
getPosition(ctx),
ctx.classBody().classBodyDeclaration().stream().map(
this::visitClassBodyDeclaration
).collect(Collectors.toList())
)
);
}
@Override
public QueenInterfaceDeclarationNode visitInterfaceDeclaration(QueenParser.InterfaceDeclarationContext ctx) {
if(ctx.normalInterfaceDeclaration() != null) {
return this.visitNormalInterfaceDeclaration(ctx.normalInterfaceDeclaration());
} else {
return this.visitAnnotationTypeDeclaration(ctx.annotationTypeDeclaration());
}
}
@Override
public QueenNormalInterfaceDeclarationNode visitNormalInterfaceDeclaration(QueenParser.NormalInterfaceDeclarationContext ctx) {
final List<QueenAnnotationNode> annotations = new ArrayList<>();
final List<QueenModifierNode> modifiers = new ArrayList<>();
final List<QueenTypeParameterNode> typeParams = new ArrayList<>();
if(ctx.typeParameters() != null && ctx.typeParameters().typeParameterList() != null) {
ctx.typeParameters().typeParameterList().typeParameter().forEach(
tp -> typeParams.add(this.visitTypeParameter(tp))
);
}
final List<QueenClassOrInterfaceTypeNode> extendsTypes = new ArrayList<>();
final String name = ctx.Identifier().getText();
final QueenParser.ExtendsInterfacesContext extendsInterfacesContext = ctx
.extendsInterfaces();
if(extendsInterfacesContext != null) {
extendsInterfacesContext.interfaceTypeList().interfaceType().forEach(
interfaceType -> extendsTypes.add(
this.visitInterfaceType(interfaceType)
)
);
}
ctx.annotation().forEach(
a -> annotations.add(this.visitAnnotation(a))
);
ctx.interfaceModifier().forEach(
m -> modifiers.add(this.visitInterfaceModifier(m))
);
return new QueenNormalInterfaceDeclarationNode(
getPosition(ctx),
annotations,
modifiers,
name,
typeParams,
extendsTypes,
this.visitInterfaceBody(ctx.interfaceBody())
);
}
@Override
public QueenAnnotationTypeDeclarationNode visitAnnotationTypeDeclaration(QueenParser.AnnotationTypeDeclarationContext ctx) {
final List<QueenAnnotationNode> annotations = new ArrayList<>();
final List<QueenModifierNode> modifiers = new ArrayList<>();
final String name = ctx.Identifier().getText();
ctx.annotation().forEach(
a -> annotations.add(this.visitAnnotation(a))
);
ctx.interfaceModifier().forEach(
m -> modifiers.add(this.visitInterfaceModifier(m))
);
return new QueenAnnotationTypeDeclarationNode(
getPosition(ctx), annotations, modifiers, name, this.visitAnnotationTypeBody(ctx.annotationTypeBody())
);
}
@Override
public QueenModifierNode visitClassModifier(QueenParser.ClassModifierContext ctx) {
return new QueenModifierNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenModifierNode visitMethodModifier(QueenParser.MethodModifierContext ctx) {
return new QueenModifierNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenModifierNode visitInterfaceMethodModifier(QueenParser.InterfaceMethodModifierContext ctx) {
return new QueenModifierNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenModifierNode visitAnnotationTypeElementModifier(QueenParser.AnnotationTypeElementModifierContext ctx) {
return new QueenModifierNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenModifierNode visitClassAbstractOrFinal(QueenParser.ClassAbstractOrFinalContext ctx) {
return new QueenModifierNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenModifierNode visitInterfaceModifier(QueenParser.InterfaceModifierContext ctx) {
return new QueenModifierNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenModifierNode visitFieldModifier(QueenParser.FieldModifierContext ctx) {
return new QueenModifierNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenModifierNode visitConstantModifier(QueenParser.ConstantModifierContext ctx) {
return new QueenModifierNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenModifierNode visitConstructorModifier(QueenParser.ConstructorModifierContext ctx) {
if(ctx != null) {
return new QueenModifierNode(getPosition(ctx), asString(ctx));
}
return null;
}
@Override
public QueenAnnotationNode visitAnnotation(QueenParser.AnnotationContext ctx) {
if(ctx.markerAnnotation() != null) {
return new QueenMarkerAnnotationNode(getPosition(ctx), asString(ctx.markerAnnotation().typeName()));
} else if(ctx.normalAnnotation() != null) {
final Map<String, String> pairs = new HashMap<>();
ctx.normalAnnotation()
.elementValuePairList()
.elementValuePair()
.forEach(
pair -> pairs.put(
pair.Identifier().getText(),
asString(pair.elementValue())
)
);
return new QueenNormalAnnotationNode(
getPosition(ctx),
asString(ctx.normalAnnotation().typeName()),
pairs
);
} else if(ctx.singleElementAnnotation() != null) {
return new QueenSingleMemberAnnotationNode(
getPosition(ctx),
asString(ctx.singleElementAnnotation().typeName()),
asString(ctx.singleElementAnnotation().elementValue())
);
}
return null;
}
@Override
public QueenClassBodyDeclarationNode visitClassBodyDeclaration(QueenParser.ClassBodyDeclarationContext ctx) {
if(ctx.classMemberDeclaration() != null) {
if(ctx.classMemberDeclaration().fieldDeclaration() != null) {
return this.visitFieldDeclaration(ctx.classMemberDeclaration().fieldDeclaration());
} else if(ctx.classMemberDeclaration().methodDeclaration() != null) {
return this.visitMethodDeclaration(ctx.classMemberDeclaration().methodDeclaration());
} else if(ctx.classMemberDeclaration().classDeclaration() != null) {
return this.visitClassDeclaration(ctx.classMemberDeclaration().classDeclaration());
} else if(ctx.classMemberDeclaration().interfaceDeclaration() != null) {
return this.visitInterfaceDeclaration(ctx.classMemberDeclaration().interfaceDeclaration());
}
} else if(ctx.instanceInitializer() != null) {
return this.visitInstanceInitializer(ctx.instanceInitializer());
} else if(ctx.staticInitializer() != null) {
return this.visitStaticInitializer(ctx.staticInitializer());
} else if(ctx.constructorDeclaration() != null) {
return this.visitConstructorDeclaration(ctx.constructorDeclaration());
}
return null;
}
@Override
public QueenLocalVariableDeclarationNode visitLocalVariableDeclaration(QueenParser.LocalVariableDeclarationContext ctx) {
final List<QueenAnnotationNode> annotations = new ArrayList<>();
final List<QueenModifierNode> modifiers = new ArrayList<>();
if(ctx.variableModifier() != null) {
ctx.variableModifier().forEach(
vm -> {
if(vm.annotation() != null) {
annotations.add(this.visitAnnotation(vm.annotation()));
}
if(vm.FINAL() != null) {
modifiers.add(
new QueenModifierNode(
this.getPosition(vm),
vm.FINAL().getText()
)
);
}
}
);
}
final Map<String, QueenExpressionNode> variables = new LinkedHashMap<>();
ctx.variableDeclaratorList().variableDeclarator().forEach(
vd -> {
variables.put(asString(vd.variableDeclaratorId()), null);
if(vd.variableInitializer() != null) {
variables.put(
asString(vd.variableDeclaratorId()),
this.visitVariableInitializer(vd.variableInitializer())
);
}
}
);
return new QueenLocalVariableDeclarationNode(
getPosition(ctx),
annotations,
modifiers,
this.visitUnannType(ctx.unannType()),
variables
);
}
@Override
public QueenFieldDeclarationNode visitFieldDeclaration(QueenParser.FieldDeclarationContext ctx) {
final List<QueenAnnotationNode> annotations = new ArrayList<>();
ctx.annotation().forEach(
a -> annotations.add(this.visitAnnotation(a))
);
final List<QueenModifierNode> modifiers = new ArrayList<>();
ctx.fieldModifier().forEach(
m -> modifiers.add(this.visitFieldModifier(m))
);
final Map<String, QueenExpressionNode> variables = new HashMap<>();
ctx.variableDeclaratorList().variableDeclarator().forEach(
vd -> {
variables.put(asString(vd.variableDeclaratorId()), null);
if(vd.variableInitializer() != null) {
variables.put(
asString(vd.variableDeclaratorId()),
this.visitVariableInitializer(vd.variableInitializer())
);
}
}
);
return new QueenFieldDeclarationNode(
getPosition(ctx),
annotations,
modifiers,
this.visitUnannType(ctx.unannType()),
variables
);
}
@Override
public QueenConstantDeclarationNode visitConstantDeclaration(QueenParser.ConstantDeclarationContext ctx) {
final List<QueenAnnotationNode> annotations = new ArrayList<>();
ctx.annotation().forEach(
a -> annotations.add(this.visitAnnotation(a))
);
final List<QueenModifierNode> modifiers = new ArrayList<>();
ctx.constantModifier().forEach(
m -> modifiers.add(this.visitConstantModifier(m))
);
final Map<String, QueenExpressionNode> variables = new HashMap<>();
ctx.variableDeclaratorList().variableDeclarator().forEach(
vd -> {
variables.put(asString(vd.variableDeclaratorId()), null);
if(vd.variableInitializer() != null) {
variables.put(
asString(vd.variableDeclaratorId()),
this.visitVariableInitializer(vd.variableInitializer())
);
}
}
);
return new QueenConstantDeclarationNode(
getPosition(ctx),
annotations,
modifiers,
this.visitUnannType(ctx.unannType()),
variables
);
}
@Override
public QueenConstructorDeclarationNode visitConstructorDeclaration(QueenParser.ConstructorDeclarationContext ctx) {
final List<QueenNode> annotations = new ArrayList<>();
ctx.annotation().forEach(
a -> annotations.add(this.visitAnnotation(a))
);
final List<QueenTypeParameterNode> typeParams = new ArrayList<>();
final QueenParser.TypeParametersContext typeParameters = ctx.constructorDeclarator().typeParameters();
if(typeParameters != null && typeParameters.typeParameterList() != null) {
typeParameters.typeParameterList().typeParameter().forEach(
tp -> typeParams.add(this.visitTypeParameter(tp))
);
}
final List<QueenParameterNode> parameters = new ArrayList<>();
if(ctx.constructorDeclarator().formalParameterList() != null) {
final QueenParser.FormalParameterListContext formalParameterList = ctx.constructorDeclarator().formalParameterList();
if(formalParameterList.formalParameters() != null) {
formalParameterList.formalParameters().formalParameter()
.forEach(fp -> parameters.add(this.visitFormalParameter(fp)));
}
if(formalParameterList.lastFormalParameter() != null) {
parameters.add(this.visitLastFormalParameter(formalParameterList.lastFormalParameter()));
}
}
final List<QueenExceptionTypeNode> throwsList = new ArrayList<>();
if(ctx.throws_() != null && ctx.throws_().exceptionTypeList() != null) {
ctx.throws_().exceptionTypeList().exceptionType().forEach(
et -> throwsList.add(this.visitExceptionType(et))
);
}
final QueenParser.ConstructorBodyContext constructorBodyContext = ctx.constructorBody();
final QueenExplicitConstructorInvocationNode explicitConstructorInvocationNode;
if(constructorBodyContext.explicitConstructorInvocation() != null) {
explicitConstructorInvocationNode = this.visitExplicitConstructorInvocation(constructorBodyContext.explicitConstructorInvocation());
} else {
explicitConstructorInvocationNode = null;
}
final QueenBlockStatements queenBlockStatements;
if(constructorBodyContext.blockStatements() != null) {
queenBlockStatements = this.visitBlockStatements(constructorBodyContext.blockStatements());
} else {
queenBlockStatements = null;
}
return new QueenConstructorDeclarationNode(
getPosition(ctx),
annotations,
this.visitConstructorModifier(ctx.constructorModifier()),
typeParams,
asString(ctx.constructorDeclarator().simpleTypeName()),
parameters,
throwsList,
explicitConstructorInvocationNode,
queenBlockStatements
);
}
@Override
public QueenMethodDeclarationNode visitMethodDeclaration(QueenParser.MethodDeclarationContext ctx) {
final List<QueenAnnotationNode> annotations = new ArrayList<>();
ctx.annotation().forEach(
a -> annotations.add(this.visitAnnotation(a))
);
final List<QueenModifierNode> modifiers = new ArrayList<>();
ctx.methodModifier().forEach(
m -> modifiers.add(this.visitMethodModifier(m))
);
final List<QueenParameterNode> parameters = new ArrayList<>();
final QueenParser.MethodDeclaratorContext methodDeclarator = ctx.methodHeader().methodDeclarator();
if(methodDeclarator.formalParameterList() != null) {
final QueenParser.FormalParameterListContext formalParameterList = methodDeclarator.formalParameterList();
if(formalParameterList.formalParameters() != null) {
formalParameterList.formalParameters().formalParameter()
.forEach(fp -> parameters.add(this.visitFormalParameter(fp)));
}
if(formalParameterList.lastFormalParameter() != null) {
parameters.add(this.visitLastFormalParameter(formalParameterList.lastFormalParameter()));
}
}
final List<QueenExceptionTypeNode> throwsList = new ArrayList<>();
if(ctx.methodHeader().throws_() != null && ctx.methodHeader().throws_().exceptionTypeList() != null) {
ctx.methodHeader().throws_().exceptionTypeList().exceptionType().forEach(
et -> throwsList.add(this.visitExceptionType(et))
);
}
final QueenParser.MethodBodyContext methodBodyContext = ctx.methodBody();
final QueenBlockStatements queenBlockStatements;
if(methodBodyContext.block() != null && methodBodyContext.block().blockStatements() != null) {
queenBlockStatements = this.visitBlockStatements(methodBodyContext.block().blockStatements());
} else {
queenBlockStatements = new QueenBlockStatements(getPosition(methodBodyContext));
}
final List<QueenTypeParameterNode> typeParams = new ArrayList<>();
if(ctx.methodHeader().typeParameters() != null && ctx.methodHeader().typeParameters().typeParameterList() != null) {
ctx.methodHeader().typeParameters().typeParameterList().typeParameter().forEach(
tp -> typeParams.add(this.visitTypeParameter(tp))
);
}
return new QueenMethodDeclarationNode(
getPosition(ctx),
annotations,
modifiers,
this.visitResult(ctx.methodHeader().result()),
typeParams,
methodDeclarator.Identifier().getText(),
parameters,
throwsList,
queenBlockStatements
);
}
@Override
public QueenTypeNode visitResult(QueenParser.ResultContext ctx) {
if(ctx.unannType() != null) {
return this.visitUnannType(ctx.unannType());
} else {
return new QueenVoidNode(this.getPosition(ctx));
}
}
@Override
public QueenInterfaceMethodDeclarationNode visitInterfaceMethodDeclaration(QueenParser.InterfaceMethodDeclarationContext ctx) {
final List<QueenAnnotationNode> annotations = new ArrayList<>();
ctx.annotation().forEach(
a -> annotations.add(this.visitAnnotation(a))
);
final List<QueenModifierNode> modifiers = new ArrayList<>();
ctx.interfaceMethodModifier().forEach(
m -> modifiers.add(this.visitInterfaceMethodModifier(m))
);
final List<QueenParameterNode> parameters = new ArrayList<>();
final QueenParser.MethodDeclaratorContext methodDeclarator = ctx.methodHeader().methodDeclarator();
if(methodDeclarator.formalParameterList() != null) {
final QueenParser.FormalParameterListContext formalParameterList = methodDeclarator.formalParameterList();
if(formalParameterList.formalParameters() != null) {
formalParameterList.formalParameters().formalParameter()
.forEach(fp -> parameters.add(this.visitFormalParameter(fp)));
}
if(formalParameterList.lastFormalParameter() != null) {
parameters.add(this.visitLastFormalParameter(formalParameterList.lastFormalParameter()));
}
}
final List<QueenExceptionTypeNode> throwsList = new ArrayList<>();
if(ctx.methodHeader().throws_() != null && ctx.methodHeader().throws_().exceptionTypeList() != null) {
ctx.methodHeader().throws_().exceptionTypeList().exceptionType().forEach(
et -> throwsList.add(this.visitExceptionType(et))
);
}
final QueenParser.MethodBodyContext methodBodyContext = ctx.methodBody();
final QueenBlockStatements queenBlockStatements;
if(methodBodyContext.block() != null && methodBodyContext.block().blockStatements() != null) {
queenBlockStatements = this.visitBlockStatements(methodBodyContext.block().blockStatements());
} else {
queenBlockStatements = null;
}
final List<QueenTypeParameterNode> typeParams = new ArrayList<>();
if(ctx.methodHeader().typeParameters() != null && ctx.methodHeader().typeParameters().typeParameterList() != null) {
ctx.methodHeader().typeParameters().typeParameterList().typeParameter().forEach(
tp -> typeParams.add(this.visitTypeParameter(tp))
);
}
return new QueenInterfaceMethodDeclarationNode(
getPosition(ctx),
annotations,
modifiers,
this.visitResult(ctx.methodHeader().result()),
typeParams,
methodDeclarator.Identifier().getText(),
parameters,
throwsList,
queenBlockStatements
);
}
@Override
public QueenExpressionNode visitExpression(QueenParser.ExpressionContext ctx) {
if(ctx == null) {
return null;
}
if(ctx.lambdaExpression() != null) {
return this.visitLambdaExpression(ctx.lambdaExpression());
} else {
return this.visitAssignmentExpression((ctx.assignmentExpression()));
}
}
@Override
public QueenExpressionNode visitAssignmentExpression(QueenParser.AssignmentExpressionContext ctx) {
if(ctx.assignment() != null) {
return this.visitAssignment(ctx.assignment());
} else {
return this.visitConditionalExpression(ctx.conditionalExpression());
// return new QueenTextExpressionNode(getPosition(ctx), asString(ctx));
}
}
@Override
public QueenExpressionNode visitPrimary(QueenParser.PrimaryContext ctx) {
QueenExpressionNode primary;
if(ctx.arrayCreationExpression() != null) {
primary = this.visitArrayCreationExpression(ctx.arrayCreationExpression());
} else if(ctx.primaryNoNewArray_lfno_primary() != null) {
primary = this.visitPrimaryNoNewArray_lfno_primary(
ctx.primaryNoNewArray_lfno_primary()
);
}
//@todo #63:60min finish visitParymary.
return new QueenTextExpressionNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenExpressionNode visitPrimaryNoNewArray_lfno_primary(QueenParser.PrimaryNoNewArray_lfno_primaryContext ctx) {
if(ctx.literal() != null) {
return this.visitLiteral(ctx.literal());
} else if(ctx.typeName() != null && ctx.IMPLEMENTATION() != null) {
final QueenNameNode typeName = this.visitTypeName(ctx.typeName());
final List<QueenArrayDimensionNode> dims = new ArrayList<>();
if(ctx.unannDim() != null) {
ctx.unannDim().forEach(
dim -> dims.add(
new QueenArrayDimensionNode(getPosition(dim))
)
);
}
return new QueenTypeImplementationExpressionNode(
getPosition(ctx.typeName()),
typeName,
dims
);
} else if(ctx.unannPrimitiveType() != null && ctx.IMPLEMENTATION() != null) {
final QueenPrimitiveTypeNode primitiveType = this.visitUnannPrimitiveType(ctx.unannPrimitiveType());
final List<QueenArrayDimensionNode> dims = new ArrayList<>();
if(ctx.unannDim() != null) {
ctx.unannDim().forEach(
dim -> dims.add(
new QueenArrayDimensionNode(getPosition(dim))
)
);
}
return new QueenTypeImplementationExpressionNode(
getPosition(ctx.unannPrimitiveType()),
primitiveType,
dims
);
} else if(ctx.VOID() != null && ctx.IMPLEMENTATION() != null) {
return new QueenTypeImplementationExpressionNode(
getPosition(ctx),
new QueenVoidNode(getPosition(ctx)),
new ArrayList<>()
);
} else if(ctx.THIS() != null) {
if(ctx.typeName() != null) {
return new QueenThisExpressionNode(
getPosition(ctx),
this.visitTypeName(ctx.typeName())
);
} else {
return new QueenThisExpressionNode(
getPosition(ctx)
);
}
} else if(ctx.LPAREN() != null && ctx.expression() != null && ctx.RPAREN() != null) {
return new QueenBracketedExpressionNode(
getPosition(ctx.expression()),
this.visitExpression(ctx.expression())
);
}
return null;
}
@Override
public QueenNameNode visitTypeName(QueenParser.TypeNameContext ctx) {
if(ctx.packageOrTypeName() == null) {
return new QueenNameNode(
getPosition(ctx),
ctx.Identifier().getText()
);
} else {
final QueenNameNode packageOrTypeName = this.visitPackageOrTypeName(ctx.packageOrTypeName());
return new QueenNameNode(
getPosition(ctx),
packageOrTypeName,
ctx.Identifier().getText()
);
}
}
@Override
public QueenNameNode visitPackageOrTypeName(QueenParser.PackageOrTypeNameContext ctx) {
if(ctx.packageOrTypeName() == null) {
return new QueenNameNode(
getPosition(ctx),
ctx.Identifier().getText()
);
} else {
final QueenNameNode packageOrTypeName = this.visitPackageOrTypeName(ctx.packageOrTypeName());
return new QueenNameNode(
getPosition(ctx),
packageOrTypeName,
ctx.Identifier().getText()
);
}
}
@Override
public QueenNameNode visitPackageName(QueenParser.PackageNameContext ctx) {
if(ctx.packageName() == null) {
return new QueenNameNode(
getPosition(ctx),
ctx.Identifier().getText()
);
} else {
final QueenNameNode packageName = this.visitPackageName(ctx.packageName());
return new QueenNameNode(
getPosition(ctx),
packageName,
ctx.Identifier().getText()
);
}
}
@Override
public QueenNameNode visitExpressionName(QueenParser.ExpressionNameContext ctx) {
if(ctx.ambiguousName() == null) {
return new QueenNameNode(
getPosition(ctx),
ctx.Identifier().getText()
);
} else {
final QueenNameNode ambiguousName = this.visitAmbiguousName(ctx.ambiguousName());
return new QueenNameNode(
getPosition(ctx),
ambiguousName,
ctx.Identifier().getText()
);
}
}
@Override
public QueenNameNode visitMethodName(QueenParser.MethodNameContext ctx) {
return new QueenNameNode(
getPosition(ctx),
ctx.Identifier().getText()
);
}
@Override
public QueenNameNode visitAmbiguousName(QueenParser.AmbiguousNameContext ctx) {
if(ctx.ambiguousName() == null) {
return new QueenNameNode(
getPosition(ctx),
ctx.Identifier().getText()
);
} else {
final QueenNameNode ambiguousName = this.visitAmbiguousName(ctx.ambiguousName());
return new QueenNameNode(
getPosition(ctx),
ambiguousName,
ctx.Identifier().getText()
);
}
}
@Override
public QueenExpressionNode visitArrayCreationExpression(QueenParser.ArrayCreationExpressionContext ctx) {
final Position position = getPosition(ctx);
final QueenTypeNode type;
if(ctx.primitiveType() != null) {
type = this.visitPrimitiveType(ctx.primitiveType());
} else {
type = this.visitClassOrInterfaceType(ctx.classOrInterfaceType());
}
final List<QueenArrayDimensionNode> dims = new ArrayList<>();
if(ctx.dimExprs() != null) {
ctx.dimExprs().dimExpr().forEach(
de -> dims.add(this.visitDimExpr(de))
);
}
if(ctx.dims() != null) {
ctx.dims().dim().forEach(
d -> dims.add(this.visitDim(d))
);
}
final String arrayInitExpr;
if(ctx.arrayInitializer() != null) {
arrayInitExpr = asString(ctx.arrayInitializer());
} else {
arrayInitExpr = null;
}
return new QueenArrayCreationExpressionNode(
position,
type,
dims,
arrayInitExpr
);
}
@Override
public QueenArrayDimensionNode visitDimExpr(QueenParser.DimExprContext ctx) {
final Position position = getPosition(ctx);
final List<QueenAnnotationNode> annotations = new ArrayList<>();
if(ctx.annotation() != null) {
ctx.annotation().forEach(
a -> annotations.add(this.visitAnnotation(a))
);
}
final QueenExpressionNode expression = this.visitExpression(ctx.expression());
return new QueenArrayDimensionNode(
position,
annotations,
expression
);
}
@Override
public QueenArrayDimensionNode visitDim(QueenParser.DimContext ctx) {
final Position position = getPosition(ctx);
final List<QueenAnnotationNode> annotations = new ArrayList<>();
if(ctx.annotation() != null) {
ctx.annotation().forEach(
a -> annotations.add(this.visitAnnotation(a))
);
}
return new QueenArrayDimensionNode(
position,
annotations
);
}
//@todo #63:60min Continue expression implementation with primary expressions.
@Override
public QueenExpressionNode visitLiteral(QueenParser.LiteralContext ctx) {
if(ctx.BooleanLiteral() != null) {
return new QueenBooleanLiteralExpressionNode(
getPosition(ctx),
Boolean.parseBoolean(ctx.BooleanLiteral().getText())
);
} else if(ctx.CharacterLiteral() != null) {
return new QueenCharLiteralExpressionNode(
getPosition(ctx),
ctx.CharacterLiteral().getText()
);
} else if(ctx.StringLiteral() != null) {
return new QueenStringLiteralExpressionNode(
getPosition(ctx),
ctx.StringLiteral().getText()
);
} else if(ctx.FloatingPointLiteral() != null) {
return new QueenDoubleLiteralExpressionNode(
getPosition(ctx),
ctx.FloatingPointLiteral().getText()
);
} else if(ctx.IntegerLiteral() != null) {
final String literal = ctx.IntegerLiteral().getText();
if(literal.endsWith("l") || literal.endsWith("L")) {
return new QueenLongLiteralExpressionNode(
getPosition(ctx),
literal
);
} else {
return new QueenIntegerLiteralExpressionNode(
getPosition(ctx),
literal
);
}
} else if(ctx.NullLiteral() != null) {
return new QueenNullLiteralExpressionNode(getPosition(ctx));
}
return null;
//@todo #49:60min Decide what to do here, return null or throw exception.
}
@Override
public QueenExpressionNode visitVariableInitializer(QueenParser.VariableInitializerContext ctx) {
return new QueenTextExpressionNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenParameterNode visitFormalParameter(QueenParser.FormalParameterContext ctx) {
final List<QueenAnnotationNode> annotations = new ArrayList<>();
final List<QueenModifierNode> modifiers = new ArrayList<>();
if(ctx.formalParameterModifier() != null) {
ctx.formalParameterModifier().forEach(
v -> {
if(v.annotation() != null) {
annotations.add(this.visitAnnotation(v.annotation()));
}
if(v.MUTABLE() != null) {
modifiers.add(new QueenModifierNode(getPosition(v), v.MUTABLE().getText()));
}
}
);
}
if(modifiers.isEmpty()) {
modifiers.add(new QueenModifierNode(getPosition(ctx),"final"));
}
final String name = asString(ctx.variableDeclaratorId());
return new QueenParameterNode(
getPosition(ctx),
annotations,
modifiers,
this.visitUnannType(ctx.unannType()),
name
);
}
@Override
public QueenParameterNode visitLastFormalParameter(QueenParser.LastFormalParameterContext ctx) {
if(ctx.formalParameter() != null) {
return this.visitFormalParameter(ctx.formalParameter());
}
final List<String> varArgAnnotations = new ArrayList<>();
final List<QueenAnnotationNode> annotations = new ArrayList<>();
final List<QueenModifierNode> modifiers = new ArrayList<>();
if(ctx.formalParameterModifier() != null) {
ctx.formalParameterModifier().forEach(
v -> {
if(v.annotation() != null) {
annotations.add(this.visitAnnotation(v.annotation()));
}
if(v.MUTABLE() != null) {
modifiers.add(new QueenModifierNode(getPosition(v), v.MUTABLE().getText()));
}
}
);
}
if(modifiers.isEmpty()) {
modifiers.add(new QueenModifierNode(getPosition(ctx),"final"));
}
final String name = asString(ctx.variableDeclaratorId());
if(ctx.annotation() != null) {
ctx.annotation().forEach(
va -> varArgAnnotations.add(asString(va))
);
}
return new QueenParameterNode(
getPosition(ctx),
annotations,
modifiers,
this.visitUnannType(ctx.unannType()),
name,
varArgAnnotations,
true
);
}
@Override
public QueenExplicitConstructorInvocationNode visitExplicitConstructorInvocation(QueenParser.ExplicitConstructorInvocationContext ctx) {
return new QueenExplicitConstructorInvocationNode(getPosition(ctx), asString(ctx));
}
@Override
public QueenBlockStatements visitBlockStatements(QueenParser.BlockStatementsContext ctx) {
final List<QueenStatementNode> blockStatements = new ArrayList<>();
ctx.blockStatement().forEach(
bs -> {
if(bs.classDeclaration() != null) {
blockStatements.add(this.visitClassDeclaration(bs.classDeclaration()));
}
if(bs.localVariableDeclarationStatement() != null) {
blockStatements.add(
this.visitLocalVariableDeclaration(