diff --git a/langserver/java/body-parser3.js b/langserver/java/body-parser3.js
index b7721b7..c845fc4 100644
--- a/langserver/java/body-parser3.js
+++ b/langserver/java/body-parser3.js
@@ -193,50 +193,59 @@ function extractSourceTypes(tokens, typemap) {
 }
 
 /**
- * @param {string} source
+ * @param {{uri:string, content:string, version:number}[]} docs
+ * @param {SourceUnit[]} cached_units
  * @param {Map<string,CEIType>} typemap 
+ * @returns {SourceUnit[]}
  */
-function parse(source, typemap) {
-    const unit = new SourceUnit();
-    /** @type {ParseProblem[]} */
-    let problems = [];
-    let tokens, timers = new Set();
+function parse(docs, cached_units, typemap) {
+
+    const timers = new Set();
     const time = name => (timers.add(name), console.time(name));
     const timeEnd = name => (timers.delete(name), console.timeEnd(name));
-    try {
-        time('tokenize');
-        tokens = new TokenList(unit.tokens = tokenize(source));
-        problems = tokens.problems;
-        timeEnd('tokenize');
 
-        // in order to resolve types as we parse, we must extract the set of source types first
-        const source_types = extractSourceTypes(tokens, typemap);
+    time('tokenize');
+    const sources = docs.reduce((arr, doc) => {
+        try {
+            const unit = new SourceUnit();
+            unit.uri = doc.uri;
+            const tokens = new TokenList(unit.tokens = tokenize(doc.content));
+            arr.push({ unit, tokens });
+        } catch(err) {
+        }
+        return arr;
+    }, [])
+    timeEnd('tokenize');
+
+    // add the cached types to the type map
+    cached_units.forEach(unit => {
+        unit.types.forEach(t => typemap.set(t.shortSignature, t));
+    })
+
+    // in order to resolve types as we parse, we must extract the set of source types first
+    sources.forEach(source => {
+        const source_types = extractSourceTypes(source.tokens, typemap);
         // add them to the type map
         source_types.forEach(t => typemap.set(t.shortSignature, t));
+    })
 
-        time('parse');
-        parseUnit(tokens, unit, typemap);
-        timeEnd('parse');
-
-        // once all the types have been parsed, resolve any field initialisers
-        const ri = new ResolveInfo(typemap, tokens.problems);
-        unit.types.forEach(t => {
-            t.fields.filter(f => f.init).forEach(f => checkAssignment(ri, f.type, f.init));
-        });
-
-    } catch(err) {
-        timers.forEach(timeEnd);
-        if (tokens && tokens.current) {
-            addproblem(tokens, ParseProblem.Error(tokens.current, `Parse failed: ${err.message}`));
-        } else {
-            console.log(`Parse failed: ${err.message}`);
+    // parse all the tokenized sources
+    time('parse');
+    sources.forEach(source => {
+        try {
+            parseUnit(source.tokens, source.unit, typemap);
+            // once all the types have been parsed, resolve any field initialisers
+            // const ri = new ResolveInfo(typemap, tokens.problems);
+            // unit.types.forEach(t => {
+            //     t.fields.filter(f => f.init).forEach(f => checkAssignment(ri, f.type, f.init));
+            // });
+        } catch (err) {
+            addproblem(source.tokens, ParseProblem.Error(source.tokens.current, `Parse failed: ${err.message}`));
         }
-    }
+    });
+    timeEnd('parse');
 
-    return {
-        unit,
-        problems,
-    }
+    return sources.map(s => s.unit);
 }
 
 /**
diff --git a/langserver/java/source-types.js b/langserver/java/source-types.js
index bc3d609..7d4720d 100644
--- a/langserver/java/source-types.js
+++ b/langserver/java/source-types.js
@@ -555,6 +555,8 @@ class SourceImport {
 }
 
 class SourceUnit {
+    /** @type {string} */
+    uri = '';
     /** @type {Token[]} */
     tokens = [];
     /** @type {SourcePackage} */
@@ -614,6 +616,13 @@ class SourceUnit {
             method,
         };
     }
+
+    /**
+     * Return the name of the package this unit belongs to
+     */
+    get packageName() {
+        return (this.package_ && this.package_.name) || '';
+    }
 }
 
 class SourceArrayType extends ArrayType {
diff --git a/langserver/java/validater.js b/langserver/java/validater.js
index 636df08..dc70294 100644
--- a/langserver/java/validater.js
+++ b/langserver/java/validater.js
@@ -5,22 +5,22 @@ const { parseBody } = require('./body-parser3');
 
 /**
  * @param {SourceUnit} unit 
- * @param {Map<string, CEIType>} androidLibrary
+ * @param {Map<string, CEIType>} typemap
  */
-function parseMethodBodies(unit, androidLibrary) {
+function parseMethodBodies(unit, typemap) {
     const resolved_types = [
-        ...resolveImports(androidLibrary, [], [], null).resolved,
+        ...resolveImports(typemap, [], [], unit.packageName).resolved,
         ...unit.imports.filter(i => i.resolved).map(i => i.resolved),
     ]
     unit.types.forEach(t => {
         t.initers.forEach(i => {
-            i.parsed = parseBody(i, resolved_types, androidLibrary);
+            i.parsed = parseBody(i, resolved_types, typemap);
         })
         t.constructors.forEach(c => {
-            c.parsed = parseBody(c, resolved_types, androidLibrary);
+            c.parsed = parseBody(c, resolved_types, typemap);
         })
         t.sourceMethods.forEach(m => {
-            m.parsed = parseBody(m, resolved_types, androidLibrary);
+            m.parsed = parseBody(m, resolved_types, typemap);
         })
     })
 }
diff --git a/langserver/server.js b/langserver/server.js
index 7557dfe..c86147b 100644
--- a/langserver/server.js
+++ b/langserver/server.js
@@ -111,23 +111,34 @@ const liveParsers = new Map();
 
 /**
  * 
- * @param {string} uri 
+ * @param {string[]} uris
  */
-function reparse(uri) {
+function reparse(uris) {
     if (androidLibrary instanceof Promise) {
         return;
     }
-    const doc = liveParsers.get(uri);
-    if (!doc) {
+    const cached_units = [], parsers = [];
+    for (let docinfo of liveParsers.values()) {
+        if (uris.includes(docinfo.uri)) {
+            // make a copy of the content in case doc changes while we're parsing
+            parsers.push({uri: docinfo.uri, content: docinfo.content, version: docinfo.version});
+        } else if (docinfo.parsed) {
+            cached_units.push(docinfo.parsed.unit);
+        }
+    }
+    if (!parsers.length) {
         return;
     }
-    const { content, version } = doc;
     const typemap = new Map(androidLibrary);
-    const result = parse(content, typemap);
-    if (result) {
-        parseMethodBodies(result.unit, typemap);
-    }
-    doc.parsed = new ParsedInfo(uri, content, version, typemap, result.unit, result.problems);
+    const units = parse(parsers, cached_units, typemap);
+    units.forEach(unit => {
+        const parser = parsers.find(p => p.uri === unit.uri);
+        if (!parser) return;
+        const doc = liveParsers.get(unit.uri);
+        if (!doc) return;
+        doc.parsed = new ParsedInfo(doc.uri, parser.content, parser.version, typemap, unit, []);
+        parseMethodBodies(unit, typemap);
+    });
 }
 
 // Create a simple text document manager. The text document manager
@@ -144,7 +155,7 @@ let documents = new TextDocuments({
         // tokenize the file content and build the initial parse state
         connection.console.log(`create parse ${version}`);
         liveParsers.set(uri, new JavaDocInfo(uri, content, version));
-        reparse(uri);
+        reparse([uri]);
         return { uri };
     },
     /**
@@ -173,7 +184,7 @@ let documents = new TextDocuments({
                 docinfo.content = `${docinfo.content.slice(0, start_index)}${change.text}${docinfo.content.slice(end_index)}`;
             }
         });
-        reparse(document.uri);
+        reparse([document.uri]);
         return document;
     },
 });
@@ -650,7 +661,7 @@ connection.onCompletion(
             return [];
         }
         const parsed = docinfo.parsed;
-        const lib = lastCompletionTypeMap = (parsed && parsed.typemap) || androidLibrary;
+        lastCompletionTypeMap = (parsed && parsed.typemap) || androidLibrary;
         let locals = [], sourceTypes = [], show_instances = false;
         if (parsed.unit) {
             const index = indexAt(_textDocumentPosition.position, parsed.content);
@@ -680,17 +691,26 @@ connection.onCompletion(
                     sortText: p.name,
                 }))
             }
-            sourceTypes = parsed.unit.types.map(t => ({
-                label: t.dottedTypeName,
-                kind: typeKindMap[t.typeKind],
-                data: { type:t.shortSignature },
-                sortText: t.dottedTypeName,
-            }))
         }
 
         if (!defaultCompletionTypes) {
             initDefaultCompletionTypes(androidLibrary);
         }
+
+        liveParsers.forEach(doc => {
+            if (!doc.parsed) {
+                return;
+            }
+            doc.parsed.unit.types.forEach(
+                t => sourceTypes.push({
+                    label: t.dottedTypeName,
+                    kind: typeKindMap[t.typeKind],
+                    data: { type:t.shortSignature },
+                    sortText: t.dottedTypeName,
+                })
+            )
+        });
+    
         return [
             ...locals,
             ...(show_instances ? defaultCompletionTypes.instances : []),