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Antlr Java Parser aims to create a Java parser using Antlr 4 grammar rules.
/*
* This file is part of antlr-java-parser.
*
* antlr-java-parser is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* antlr-java-parser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with antlr-java-parser. If not, see terminalNodeList) {
String identifier = "";
for (int i = 0; i < terminalNodeList.size(); i++) {
identifier += (i > 0 ? "." : "") + terminalNodeList.get(i).getText();
}
return identifier;
}
public static NameExpr qualifiedName(List terminalNodeList) {
String qualifiedName = dottedIdentifier(terminalNodeList);
return ASTHelper.createNameExpr(qualifiedName);
}
public static void setVariableModifiers(Java7Parser.VariableModifiersContext context, Resource resource, AdapterParameters adapterParameters) {
List annotations = getAnnotations(context, adapterParameters);
int modifiers = 0;
if (hasModifier(context.FINAL())) {
modifiers |= ModifierSet.FINAL;
}
resource.setAnnotations(annotations);
resource.setModifiers(modifiers);
}
public static void setVariableModifiers(Java7Parser.VariableModifiersContext context, Parameter parameter, AdapterParameters adapterParameters) {
List annotations = getAnnotations(context, adapterParameters);
int modifiers = 0;
if (hasModifier(context.FINAL())) {
modifiers |= ModifierSet.FINAL;
}
parameter.setAnnotations(annotations);
parameter.setModifiers(modifiers);
}
public static void setVariableModifiers(Java7Parser.VariableModifiersContext context, CatchParameter parameter, AdapterParameters adapterParameters) {
/*
variableModifiers
: annotation* FINAL? annotation*
;
*/
int modifiers = 0;
List annotations = getAnnotations(context, adapterParameters);
if (hasModifier(context.FINAL())) {
modifiers |= ModifierSet.FINAL;
}
parameter.setAnnotations(annotations);
parameter.setModifiers(modifiers);
}
private static List getAnnotations(Java7Parser.VariableModifiersContext context, AdapterParameters adapterParameters) {
List annotations = new LinkedList();
for (Java7Parser.AnnotationContext annotationContext : context.annotation()) {
AnnotationExpr annotationExpr = Adapters.getAnnotationContextAdapter().adapt(annotationContext, adapterParameters);
annotations.add(annotationExpr);
}
return annotations;
}
private static void setModifiersByType(BodyDeclaration bodyDeclaration, int modifiers) {
if (bodyDeclaration instanceof TypeDeclaration) {
((TypeDeclaration)bodyDeclaration).setModifiers(modifiers);
} else if (bodyDeclaration instanceof MethodDeclaration) {
((MethodDeclaration)bodyDeclaration).setModifiers(modifiers);
} else if (bodyDeclaration instanceof ConstructorDeclaration) {
((ConstructorDeclaration)bodyDeclaration).setModifiers(modifiers);
} else if (bodyDeclaration instanceof FieldDeclaration) {
((FieldDeclaration)bodyDeclaration).setModifiers(modifiers);
} else if (bodyDeclaration instanceof AnnotationMemberDeclaration) {
((AnnotationMemberDeclaration)bodyDeclaration).setModifiers(modifiers);
} else {
throw new RuntimeException("Unknown type to set modifiers: " + bodyDeclaration.getClass().getName());
}
}
public static void setModifiers(Java7Parser.ModifiersContext modifiersContext, BodyDeclaration typeDeclaration, AdapterParameters adapterParameters) {
if (modifiersContext != null && modifiersContext.modifier() != null) {
setModifiers(modifiersContext.modifier(), typeDeclaration, adapterParameters);
}
}
public static void setModifiers(List modifierList, BodyDeclaration typeDeclaration, AdapterParameters adapterParameters) {
int modifiers = 0;
List annotations = new LinkedList();
for (Java7Parser.ModifierContext modifierContext : modifierList) {
if (hasModifier(modifierContext.PUBLIC())) {
modifiers |= ModifierSet.PUBLIC;
}
if (hasModifier(modifierContext.PROTECTED())) {
modifiers |= ModifierSet.PROTECTED;
}
if (hasModifier(modifierContext.PRIVATE())) {
modifiers |= ModifierSet.PRIVATE;
}
if (hasModifier(modifierContext.ABSTRACT())) {
modifiers |= ModifierSet.ABSTRACT;
}
if (hasModifier(modifierContext.STATIC())) {
modifiers |= ModifierSet.STATIC;
}
if (hasModifier(modifierContext.FINAL())) {
modifiers |= ModifierSet.FINAL;
}
if (hasModifier(modifierContext.STRICTFP())) {
modifiers |= ModifierSet.STRICTFP;
}
if (hasModifier(modifierContext.TRANSIENT())) {
modifiers |= ModifierSet.TRANSIENT;
}
if (modifierContext.annotation() != null) {
AnnotationExpr annotationExpr = Adapters.getAnnotationContextAdapter().adapt(modifierContext.annotation(), adapterParameters);
annotations.add(annotationExpr);
}
// Any comments that were not trapped by an annotation should be captured here
AdapterUtil.setComments(typeDeclaration, modifierContext, adapterParameters);
}
typeDeclaration.setAnnotations(annotations);
setModifiersByType(typeDeclaration, modifiers);
}
private static boolean hasModifier(TerminalNode modifier) {
return modifier != null;
}
public static List convertTypeList(List typeList) {
if (typeList == null) {
return null;
//throw new RuntimeException("typeList cannot be null");
}
List classOrInterfaceTypeList = new LinkedList();
for (Type type : typeList) {
if (type instanceof ReferenceType) {
ReferenceType referenceType = (ReferenceType)type;
classOrInterfaceTypeList.add((ClassOrInterfaceType)referenceType.getType());
} else {
classOrInterfaceTypeList.add((ClassOrInterfaceType)type);
}
}
return classOrInterfaceTypeList;
}
/**
*
* @param adapter
* @param contextList
* @param operator
* @param Context Type
* @return Expression
*/
public static Expression handleExpression(Adapter adapter, List contextList, BinaryExpr.Operator operator, AdapterParameters adapterParameters) {
Expression expression = adapter.adapt(contextList.get(0), adapterParameters);
AdapterUtil.setComments(expression, (ParserRuleContext)contextList.get(0), adapterParameters);
// This expression represents more than one consecutive OR expression
if (contextList.size() > 1) {
BinaryExpr root = new BinaryExpr();
root.setLeft(expression);
root.setOperator(operator);
BinaryExpr currentExpression = root;
for (int i = 1; i < contextList.size(); i++) {
Expression rightExpression = adapter.adapt(contextList.get(i), adapterParameters);
AdapterUtil.setComments(rightExpression, (ParserRuleContext)contextList.get(i), adapterParameters);
currentExpression.setRight(rightExpression);
// On the last one, do not create a tail.
if (i < contextList.size() - 1) {
BinaryExpr binaryExpr = new BinaryExpr();
binaryExpr.setLeft(currentExpression);
binaryExpr.setOperator(operator);
currentExpression = binaryExpr;
}
}
return currentExpression;
}
return expression;
}
public static List singleElementList(T element) {
List newElementList = new LinkedList();
newElementList.add(element);
return newElementList;
}
/**
* If there are no statements within a block, we need a special method to grab any comments that
* might exist between braces.
*
* @param node
* @param parserRuleContext
* @param adapterParameters
*/
public static void setInternalComments(Node node, ParserRuleContext parserRuleContext, AdapterParameters adapterParameters) {
BufferedTokenStream tokens = adapterParameters.getTokens();
if (node == null || parserRuleContext == null || tokens == null) {
throw new IllegalArgumentException("Parameters must not be null");
}
Token startToken = parserRuleContext.getStart();
Token stopToken = parserRuleContext.getStop();
List commentTokens;
List internalCommentList = new LinkedList();
// Checking to the right of the start token will check inside the statement
commentTokens = tokens.getHiddenTokensToRight(startToken.getTokenIndex(), Java7Lexer.COMMENTS);
if (commentTokens != null) {
for (Token commentToken : commentTokens) {
// Skip already claimed comments (prevents comment repeats)
if (adapterParameters.isCommentTokenClaimed(commentToken.getTokenIndex())) {
continue;
} else {
// Claim it
adapterParameters.claimCommentToken(commentToken.getTokenIndex());
}
if (commentToken.getText().startsWith("/**")) {
JavadocComment javadocComment = new JavadocComment(commentToken.getText());
internalCommentList.add(javadocComment);
} else if (commentToken.getText().startsWith("/*")) {
BlockComment blockComment = new BlockComment(commentToken.getText());
internalCommentList.add(blockComment);
} else if (commentToken.getText().startsWith("//")) {
LineComment lineComment = new LineComment(commentToken.getText());
internalCommentList.add(lineComment);
}
}
}
if (internalCommentList.size() > 0) {
if (node.getInternalComments() != null) {
node.getInternalComments().addAll(internalCommentList);
} else {
node.setInternalComments(internalCommentList);
}
}
}
public static void setPosition(Node node, ParserRuleContext ctx) {
int beginLine = ctx.getStart().getLine();
int beginColumn = ctx.getStart().getCharPositionInLine();
int endLine = ctx.getStop().getLine();
int endTokenLength = ctx.getStop().getStopIndex() - ctx.getStop().getStartIndex();
int endColumn = ctx.getStop().getCharPositionInLine() + endTokenLength;
node.setBeginLine(beginLine);
node.setBeginColumn(beginColumn);
node.setEndLine(endLine);
node.setEndColumn(endColumn);
node.setBeginIndex(ctx.getStart().getStartIndex());
node.setEndIndex(ctx.getStop().getStopIndex());
}
public static void setComments(Node node, ParserRuleContext parserRuleContext, AdapterParameters adapterParameters) {
BufferedTokenStream tokens = adapterParameters.getTokens();
if (node == null || parserRuleContext == null || tokens == null) {
// Just return
return;
}
Token startToken = parserRuleContext.getStart();
Token stopToken = parserRuleContext.getStop();
List commentTokens;
List beginCommentList = new LinkedList();
List endCommentList = new LinkedList();
commentTokens = tokens.getHiddenTokensToLeft(startToken.getTokenIndex(), Java7Lexer.COMMENTS);
if (commentTokens != null) {
for (Token commentToken : commentTokens) {
// Skip already claimed comments (prevents comment repeats)
if (adapterParameters.isCommentTokenClaimed(commentToken.getTokenIndex())) {
continue;
} else {
// Claim it
adapterParameters.claimCommentToken(commentToken.getTokenIndex());
}
if (commentToken.getText().trim().startsWith("/**")) {
JavadocComment javadocComment = new JavadocComment(commentToken.getText());
beginCommentList.add(javadocComment);
} else if (commentToken.getText().trim().startsWith("/*")) {
BlockComment blockComment = new BlockComment(commentToken.getText());
beginCommentList.add(blockComment);
} else if (commentToken.getText().trim().startsWith("//")) {
LineComment lineComment = new LineComment(commentToken.getText());
beginCommentList.add(lineComment);
}
}
}
commentTokens = tokens.getHiddenTokensToRight(stopToken.getTokenIndex(), Java7Lexer.COMMENTS);
if (commentTokens != null) {
for (Token commentToken : commentTokens) {
if (commentToken.getLine() == stopToken.getLine()) {
// Skip already claimed comments (prevents comment repeats)
if (adapterParameters.isCommentTokenClaimed(commentToken.getTokenIndex())) {
continue;
} else {
// Claim it
adapterParameters.claimCommentToken(commentToken.getTokenIndex());
}
if (commentToken.getText().trim().startsWith("/**")) {
JavadocComment javadocComment = new JavadocComment(commentToken.getText());
endCommentList.add(javadocComment);
} else if (commentToken.getText().trim().startsWith("/*")) {
BlockComment blockComment = new BlockComment(commentToken.getText());
endCommentList.add(blockComment);
} else if (commentToken.getText().trim().startsWith("//")) {
LineComment lineComment = new LineComment(commentToken.getText());
endCommentList.add(lineComment);
}
}
}
}
if (beginCommentList.size() > 0) {
if (node.getBeginComments() != null) {
node.getBeginComments().addAll(beginCommentList);
} else {
node.setBeginComments(beginCommentList);
}
}
if (endCommentList.size() > 0) {
if (node.getEndComments() != null) {
node.getEndComments().addAll(endCommentList);
} else {
node.setEndComments(endCommentList);
}
}
}
}
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