Java AstNode.getAbsolutePosition方法代码示例

import org.mozilla.javascript.ast.AstNode; //导入方法依赖的package包/类
/**
 * for each child of parent AstNode add a new code block and add completions
 * for each block of code
 * 
 * @param parent AstNode to iterate children
 * @param set completions set to add to
 * @param entered Text entered
 * @param codeBlock parent CodeBlock
 * @param offset codeblock offset
 */
private void addCodeBlock(Node parent, Set<Completion> set,
		String entered, CodeBlock codeBlock, int offset) {
	
	if(parent == null)
		return;
	
	Node child = parent.getFirstChild();

	while (child != null) {
		CodeBlock childBlock = codeBlock;
		if (child instanceof AstNode) {
			AstNode node = (AstNode) child;
			int start = node.getAbsolutePosition();
			childBlock = codeBlock.addChildCodeBlock(start);
			childBlock.setEndOffset(offset);
		}
		iterateNode((AstNode) child, set, entered, childBlock, offset);

		child = child.getNext();

	}
}
 

import org.mozilla.javascript.ast.AstNode; //导入方法依赖的package包/类
/**
 * Extract variables from if/else node(s)
 */
private void processIfThenElse(Node child, CodeBlock block,
		Set<Completion> set, String entered, int offset) {
	IfStatement ifStatement = (IfStatement) child;
	if (canProcessNode(ifStatement)) {
		offset = ifStatement.getAbsolutePosition()
				+ ifStatement.getLength();
		addCodeBlock(ifStatement.getThenPart(), set, entered, block, offset);
		AstNode elseNode = ifStatement.getElsePart();
		if (elseNode != null) {
			int start = elseNode.getAbsolutePosition();
			CodeBlock childBlock = block.addChildCodeBlock(start);
			offset = start + elseNode.getLength();
			iterateNode(elseNode, set, entered, childBlock, offset);
			childBlock.setEndOffset(offset);
		}
	}

}
 

import org.mozilla.javascript.ast.AstNode; //导入方法依赖的package包/类
/**
 * Creates and returns a node for the outline tree that corresponds to
 * a specific AST node.
 *
 * @param node The AST node.
 * @return The outline tree node.
 */
private final JavaScriptTreeNode createTreeNode(AstNode node) {
	JavaScriptTreeNode tn = new JavaScriptTreeNode(node);
	try {
		int offs = node.getAbsolutePosition();
		tn.setOffset(textArea.getDocument().createPosition(offs));
	} catch (BadLocationException ble) { // Never happens
		ble.printStackTrace();
	}
	return tn;
}
 

import org.mozilla.javascript.ast.AstNode; //导入方法依赖的package包/类
@Override
public void actionPerformed(ActionEvent e) {

	JavaScriptParser parser = getParser(textArea);
	if (parser==null) {
		return; // Shouldn't happen
	}
	AstRoot astRoot = parser.getAstRoot();

	if (astRoot!=null) {
		int dot = textArea.getCaretPosition();
		visitor.reset(dot);
		astRoot.visit(visitor);
		AstNode scope = visitor.getDeepestScope();
		if (scope!=null && scope!=astRoot) {
			int start = scope.getAbsolutePosition();
			int end = Math.min(start + scope.getLength() - 1,
								textArea.getDocument().getLength());
			try {
				int startLine = textArea.getLineOfOffset(start);
				int endLine = end<0 ? textArea.getLineCount() :
								textArea.getLineOfOffset(end);
				textArea.setActiveLineRange(startLine, endLine);
			} catch (BadLocationException ble) {
				ble.printStackTrace(); // Never happens
			}
		}
		else {
			textArea.setActiveLineRange(-1, -1);
		}
	}

}
 

import org.mozilla.javascript.ast.AstNode; //导入方法依赖的package包/类
/**
 * Extract variables from try/catch node(s)
 */
private void processTryCatchNode(Node child, CodeBlock block,
		Set<Completion> set, String entered, int offset) {
	TryStatement tryStatement = (TryStatement) child;
	if (canProcessNode(tryStatement)) {
		offset = tryStatement.getTryBlock().getAbsolutePosition()
				+ tryStatement.getTryBlock().getLength();
		addCodeBlock(tryStatement.getTryBlock(), set, entered, block,
				offset);
		// iterate catch
		for (int i = 0; i < tryStatement.getCatchClauses().size(); i++) {

			CatchClause clause = tryStatement.getCatchClauses().get(i);
			if (canProcessNode(clause)) {
				offset = clause.getAbsolutePosition() + clause.getLength();
				CodeBlock catchBlock = block.getParent().addChildCodeBlock(
						clause.getAbsolutePosition());
				catchBlock.setEndOffset(offset);
				AstNode target = clause.getVarName();

				JavaScriptVariableDeclaration dec = extractVariableFromNode(
						target, catchBlock, offset);
				if (dec != null) {
					dec.setTypeDeclaration(clause);
				}

				addCodeBlock(clause.getBody(), set, entered, catchBlock,
						offset);
			}
		}
		// now sort out finally block
		if (tryStatement.getFinallyBlock() != null) {
			AstNode finallyNode = tryStatement.getFinallyBlock();
			if (canProcessNode(finallyNode)) {
				offset = finallyNode.getAbsolutePosition()
						+ finallyNode.getLength();
				CodeBlock finallyBlock = block.getParent()
						.addChildCodeBlock(
								tryStatement.getFinallyBlock()
										.getAbsolutePosition());
				addCodeBlock(finallyNode, set, entered, finallyBlock,
						offset);
				finallyBlock.setEndOffset(offset);
			}
		}
	}
}
 

import org.mozilla.javascript.ast.AstNode; //导入方法依赖的package包/类
private boolean canProcessNode(AstNode node) {
	int start = node.getAbsolutePosition();
	int offset = start + node.getLength();
	return dot >= start && dot < offset;
}
 

import org.mozilla.javascript.ast.AstNode; //导入方法依赖的package包/类
private boolean containsOffs(AstNode node) {
	int start = node.getAbsolutePosition();
	return start<=offs && start+node.getLength()>offs;
}