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Use proper snippet syntax so placeholders work in vscode

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This commit is contained in:
Kris De Volder
2017-09-20 17:41:27 -07:00
parent cdd390f048
commit 830f2e9879
3 changed files with 90 additions and 16 deletions
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37
headless-services/boot-java-language-server/src/main/java/org/springframework/ide/vscode/boot/java/snippets/JavaSnippetBuilder.java
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@@ -10,25 +10,58 @@
*******************************************************************************/
package org.springframework.ide.vscode.boot.java.snippets;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.springframework.ide.vscode.commons.languageserver.completion.DocumentEdits;
import org.springframework.ide.vscode.commons.languageserver.util.DocumentRegion;
import org.springframework.ide.vscode.commons.languageserver.util.SnippetBuilder;
import com.google.common.base.Supplier;
/**
* Respobsible for converting eclipse-like template string into lsp snippet text.
* @author Kris De Volder
*/
public class JavaSnippetBuilder{
private Supplier<SnippetBuilder> snippetBuilderFactory;
private static final Pattern PLACE_HOLDER = Pattern.compile("\\$\\{(.+?)\\}");
public JavaSnippetBuilder(Supplier<SnippetBuilder> snippetBuilderFactory) {
this.snippetBuilderFactory = snippetBuilderFactory;
}
public DocumentEdits createEdit(DocumentRegion query, String template) {
DocumentEdits edit = new DocumentEdits(query.getDocument());
edit.replace(query.getStart(), query.getEnd(), template);
edit.replace(query.getStart(), query.getEnd(), createSnippet(template));
return edit;
}
private String createSnippet(String template) {
Matcher matcher = PLACE_HOLDER.matcher(template);
int start = 0;
SnippetBuilder snippet = snippetBuilderFactory.get();
while (matcher.find(start)) {
int matchStart = matcher.start();
snippet.text(template.substring(start, matchStart));
int matchEnd = matcher.end();
String placeHolderImage = template.substring(matcher.start(1), matcher.end(1));
int colon = placeHolderImage.indexOf(':');
String id, value;
if (colon>=0) {
id = placeHolderImage.substring(0, colon);
value = placeHolderImage.substring(colon+1);
} else {
id = placeHolderImage;
value = id;
}
snippet.placeHolder(id, value);
start = matchEnd;
}
snippet.text(template.substring(start));
return snippet.build().toString();
}
}