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added experiment to parse java source code using JDTs parser

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This commit is contained in:
Martin Lippert
2017-01-19 14:51:10 +01:00
parent c217dec738
commit 929f5de954
2 changed files with 45 additions and 43 deletions
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75
vscode-extensions/vscode-boot-java/src/main/java/org/springframework/ide/vscode/boot/java/completions/BootJavaCompletionEngine.java
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@@ -14,13 +14,16 @@ package org.springframework.ide.vscode.boot.java.completions;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import org.eclipse.lsp4j.CompletionItemKind;
import org.springframework.ide.vscode.commons.languageserver.completion.DocumentEdits;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.dom.AST;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.ASTParser;
import org.eclipse.jdt.core.dom.CompilationUnit;
import org.eclipse.jdt.core.dom.NodeFinder;
import org.springframework.ide.vscode.commons.languageserver.completion.ICompletionEngine;
import org.springframework.ide.vscode.commons.languageserver.completion.ICompletionProposal;
import org.springframework.ide.vscode.commons.util.Renderable;
import org.springframework.ide.vscode.commons.util.Renderables;
import org.springframework.ide.vscode.commons.util.text.IDocument;
public class BootJavaCompletionEngine implements ICompletionEngine {
@@ -28,45 +31,31 @@ public class BootJavaCompletionEngine implements ICompletionEngine {
@Override
public Collection<ICompletionProposal> getCompletions(IDocument document, int offset) throws Exception {
List<ICompletionProposal> completions = new ArrayList<>();
ICompletionProposal proposal = new ICompletionProposal() {
@Override
public DocumentEdits getTextEdit() {
DocumentEdits edits = new DocumentEdits(document);
edits.insert(0, "my noew java code from spring boot completions!!!");
return edits;
}
@Override
public String getLabel() {
return "Do a great Spring Boot Java Code completion";
}
@Override
public CompletionItemKind getKind() {
return CompletionItemKind.Text;
}
@Override
public Renderable getDocumentation() {
return Renderables.text("this describes the Boot Java completion in more detail");
}
@Override
public String getDetail() {
return "and here are the details";
}
@Override
public ICompletionProposal deemphasize() {
return null;
}
};
completions.add(proposal);
System.out.println("create parser");
ASTParser parser = ASTParser.newParser(AST.JLS8);
Map<String, String> options = JavaCore.getOptions();
JavaCore.setComplianceOptions(JavaCore.VERSION_1_8, options);
parser.setCompilerOptions(options);
parser.setKind(ASTParser.K_COMPILATION_UNIT);
parser.setStatementsRecovery(true);
parser.setBindingsRecovery(true);
System.out.println("set source");
parser.setSource(document.get(0, document.getLength()).toCharArray());
System.out.println("start parse");
CompilationUnit cu = (CompilationUnit) parser.createAST(null);
System.out.println("end parse");
ASTNode node = NodeFinder.perform(cu, offset, 0);
System.out.println("AST node found: " + node.getClass().getName());
return completions;
}