diff --git a/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/commands/SemanticTokensCommand.java b/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/commands/SemanticTokensCommand.java
index bb8549e90b..faf3316e62 100644
--- a/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/commands/SemanticTokensCommand.java
+++ b/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/commands/SemanticTokensCommand.java
@@ -17,19 +17,15 @@
 
 import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.jdt.core.ITypeRoot;
-import org.eclipse.jdt.core.JavaModelException;
 import org.eclipse.jdt.core.dom.CompilationUnit;
 import org.eclipse.jdt.core.manipulation.CoreASTProvider;
 import org.eclipse.jdt.ls.core.internal.JDTUtils;
-import org.eclipse.jdt.ls.core.internal.JavaLanguageServerPlugin;
 import org.eclipse.jdt.ls.core.internal.JobHelpers;
 import org.eclipse.jdt.ls.core.internal.handlers.DocumentLifeCycleHandler;
-import org.eclipse.jdt.ls.core.internal.handlers.JsonRpcHelpers;
 import org.eclipse.jdt.ls.core.internal.semantictokens.SemanticTokenManager;
 import org.eclipse.jdt.ls.core.internal.semantictokens.SemanticTokens;
 import org.eclipse.jdt.ls.core.internal.semantictokens.SemanticTokensLegend;
 import org.eclipse.jdt.ls.core.internal.semantictokens.SemanticTokensVisitor;
-import org.eclipse.jface.text.IDocument;
 
 public class SemanticTokensCommand {
 	public static SemanticTokens provide(String uri) {
@@ -38,22 +34,17 @@ public static SemanticTokens provide(String uri) {
 	}
 
 	private static SemanticTokens doProvide(String uri) {
-		IDocument document = null;
-
 		ITypeRoot typeRoot = JDTUtils.resolveTypeRoot(uri);
-		if (typeRoot != null) {
-			try {
-				document = JsonRpcHelpers.toDocument(typeRoot.getBuffer());
-			} catch (JavaModelException e) {
-				JavaLanguageServerPlugin.logException("Failed to provide semantic tokens for " + uri, e);
-			}
-		}
-		if (document == null) {
+		if (typeRoot == null) {
 			return new SemanticTokens(Collections.emptyList());
 		}
 
-		SemanticTokensVisitor collector = new SemanticTokensVisitor(document, SemanticTokenManager.getInstance());
 		CompilationUnit root = CoreASTProvider.getInstance().getAST(typeRoot, CoreASTProvider.WAIT_YES, new NullProgressMonitor());
+		if (root == null) {
+			return new SemanticTokens(Collections.emptyList());
+		}
+
+		SemanticTokensVisitor collector = new SemanticTokensVisitor(root, SemanticTokenManager.getInstance());
 		root.accept(collector);
 		return collector.getSemanticTokens();
 	}
diff --git a/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/semantictokens/SemanticTokensVisitor.java b/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/semantictokens/SemanticTokensVisitor.java
index e7a2d891e8..591df8ecdf 100644
--- a/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/semantictokens/SemanticTokensVisitor.java
+++ b/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/semantictokens/SemanticTokensVisitor.java
@@ -19,6 +19,7 @@
 import org.eclipse.jdt.core.dom.ASTNode;
 import org.eclipse.jdt.core.dom.ASTVisitor;
 import org.eclipse.jdt.core.dom.ClassInstanceCreation;
+import org.eclipse.jdt.core.dom.CompilationUnit;
 import org.eclipse.jdt.core.dom.IBinding;
 import org.eclipse.jdt.core.dom.IPackageBinding;
 import org.eclipse.jdt.core.dom.ITypeBinding;
@@ -31,17 +32,15 @@
 import org.eclipse.jdt.core.dom.SimpleName;
 import org.eclipse.jdt.core.dom.SimpleType;
 import org.eclipse.jdt.core.dom.Type;
-import org.eclipse.jdt.ls.core.internal.handlers.JsonRpcHelpers;
-import org.eclipse.jface.text.IDocument;
 
 public class SemanticTokensVisitor extends ASTVisitor {
-	private IDocument document;
+	private CompilationUnit cu;
 	private SemanticTokenManager manager;
 	private List<SemanticToken> tokens;
 
-	public SemanticTokensVisitor(IDocument document, SemanticTokenManager manager) {
+	public SemanticTokensVisitor(CompilationUnit cu, SemanticTokenManager manager) {
 		this.manager = manager;
-		this.document = document;
+		this.cu = cu;
 		this.tokens = new ArrayList<>();
 	}
 
@@ -85,9 +84,8 @@ private List<Integer> encodedTokens() {
 		int currentLine = 0;
 		int currentColumn = 0;
 		for (SemanticToken token : this.tokens) {
-			int[] lineAndColumn = JsonRpcHelpers.toLine(this.document, token.getOffset());
-			int line = lineAndColumn[0];
-			int column = lineAndColumn[1];
+			int line = cu.getLineNumber(token.getOffset()) - 1;
+			int column = cu.getColumnNumber(token.getOffset());
 			int deltaLine = line - currentLine;
 			if (deltaLine != 0) {
 				currentLine = line;