| /******************************************************************************* |
| * Copyright (c) 2009 xored software, Inc. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * xored software, Inc. - initial API and Implementation (Vladimir Belov) |
| *******************************************************************************/ |
| |
| package org.eclipse.dltk.javascript.ast; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.dltk.ast.ASTNode; |
| import org.eclipse.dltk.ast.ASTVisitor; |
| import org.eclipse.dltk.javascript.internal.parser.JSLiterals; |
| |
| public class FunctionStatement extends Expression implements ISourceableBlock, |
| Documentable, JSDeclaration, JSScope { |
| |
| private Keyword functionKeyword; |
| private Identifier name; |
| private List<Argument> arguments = null; |
| private StatementBlock body; |
| private int LP = -1; |
| private int RP = -1; |
| // TODO (alex) remove unused field in DLTK 6.0 |
| @Deprecated |
| private int colonPosition = -1; |
| private Comment documentation; |
| private final boolean declaration; |
| private List<JSDeclaration> declarations; |
| |
| public FunctionStatement(JSNode parent, boolean declaration) { |
| super(parent); |
| this.declaration = declaration; |
| } |
| |
| /** |
| * @see org.eclipse.dltk.ast.ASTNode#traverse(org.eclipse.dltk.ast.ASTVisitor) |
| */ |
| @Override |
| public void traverse(ASTVisitor visitor) throws Exception { |
| if (visitor.visit(this)) { |
| if (functionKeyword != null) |
| functionKeyword.traverse(visitor); |
| if (name != null) |
| name.traverse(visitor); |
| |
| if (arguments != null) { |
| for (ASTNode node : arguments) { |
| node.traverse(visitor); |
| } |
| } |
| if (body != null) |
| body.traverse(visitor); |
| visitor.endvisit(this); |
| } |
| } |
| |
| public Keyword getFunctionKeyword() { |
| return this.functionKeyword; |
| } |
| |
| public void setFunctionKeyword(Keyword keyword) { |
| this.functionKeyword = keyword; |
| } |
| |
| public Identifier getName() { |
| return this.name; |
| } |
| |
| public void setName(Identifier name) { |
| this.name = name; |
| } |
| |
| public Identifier getIdentifier() { |
| return name; |
| } |
| |
| public String getFunctionName() { |
| return name != null ? name.getName() : "<anonymous>"; |
| } |
| |
| public List<Argument> getArguments() { |
| return arguments != null ? arguments : Collections |
| .<Argument> emptyList(); |
| } |
| |
| public void addArgument(Argument argument) { |
| if (arguments == null) { |
| arguments = new ArrayList<Argument>(4); |
| } |
| arguments.add(argument); |
| } |
| |
| /** |
| * Returns the {@link Argument} with the specified name or <code>null</code> |
| * if not found |
| * |
| * @param argumentName |
| * @return |
| */ |
| public Argument getArgument(String argumentName) { |
| if (arguments != null && argumentName != null) { |
| for (Argument argument : arguments) { |
| if (argumentName.equals(argument.getArgumentName())) { |
| return argument; |
| } |
| } |
| } |
| return null; |
| } |
| |
| public StatementBlock getBody() { |
| return this.body; |
| } |
| |
| public void setBody(StatementBlock body) { |
| this.body = body; |
| } |
| |
| public boolean isEmptyBody() { |
| return body == null || body.getStatements().isEmpty(); |
| } |
| |
| public int getLP() { |
| return this.LP; |
| } |
| |
| public void setLP(int LP) { |
| this.LP = LP; |
| } |
| |
| public int getRP() { |
| return this.RP; |
| } |
| |
| public void setRP(int RP) { |
| this.RP = RP; |
| } |
| |
| @Deprecated |
| public int getColonPosition() { |
| return colonPosition; |
| } |
| |
| @Deprecated |
| public void setColonPosition(int colonPosition) { |
| this.colonPosition = colonPosition; |
| } |
| |
| @Override |
| public Comment getDocumentation() { |
| return documentation; |
| } |
| |
| public void setDocumentation(Comment documentation) { |
| this.documentation = documentation; |
| } |
| |
| @Override |
| public String toSourceString(String indentationString) { |
| |
| Assert.isTrue(sourceStart() >= 0); |
| Assert.isTrue(sourceEnd() > 0); |
| Assert.isTrue(LP > 0); |
| Assert.isTrue(RP > 0); |
| |
| StringBuffer buffer = new StringBuffer(); |
| |
| buffer.append(indentationString); |
| buffer.append(Keywords.FUNCTION); |
| |
| if (name != null) { |
| buffer.append(" "); |
| buffer.append(name.toSourceString(indentationString)); |
| } |
| |
| buffer.append(" ("); |
| |
| for (int i = 0; i < getArguments().size(); i++) { |
| if (i > 0) |
| buffer.append(", "); |
| |
| buffer.append(getArguments().get(i).toSourceString( |
| indentationString)); |
| } |
| |
| buffer.append(")"); |
| buffer.append(JSLiterals.EOL); |
| buffer.append(getBody().toSourceString(indentationString)); |
| |
| return buffer.toString(); |
| } |
| |
| public boolean isBlock() { |
| return true; |
| } |
| |
| public boolean isDeclaration() { |
| return declaration; |
| } |
| |
| /** |
| * Tests if this function is just a block: |
| * |
| * <pre> |
| * (function(){})(); |
| * </pre> |
| */ |
| public boolean isInlineBlock() { |
| if (!declaration) { |
| if (getParent() instanceof CallExpression) { |
| return true; |
| } else if (getParent() instanceof ParenthesizedExpression) { |
| if (((ParenthesizedExpression) getParent()).getParent() instanceof CallExpression) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| public void addDeclaration(JSDeclaration declaration) { |
| if (declarations == null) { |
| declarations = new ArrayList<JSDeclaration>(); |
| } |
| declarations.add(declaration); |
| } |
| |
| public List<JSDeclaration> getDeclarations() { |
| return declarations != null ? declarations : Collections |
| .<JSDeclaration> emptyList(); |
| } |
| } |