Stub support for varargs

compiler/frontend/src/org/jetbrains/jet/lang/diagnostics/Errors.java

@@ -353,7 +353,7 @@ public interface Errors {
 
     ParameterizedDiagnosticFactory1<Collection<? extends CallableDescriptor>> OVERLOAD_RESOLUTION_AMBIGUITY = new AmbiguousDescriptorDiagnosticFactory("Overload resolution ambiguity: {0}");
     ParameterizedDiagnosticFactory1<Collection<? extends CallableDescriptor>> NONE_APPLICABLE = new AmbiguousDescriptorDiagnosticFactory("None of the following functions can be called with the arguments supplied: {0}");
-    ParameterizedDiagnosticFactory1<ValueParameterDescriptor> NO_VALUE_FOR_PARAMETER = ParameterizedDiagnosticFactory1.create(ERROR, "No value passed for parameter {0}");
+    ParameterizedDiagnosticFactory1<ValueParameterDescriptor> NO_VALUE_FOR_PARAMETER = ParameterizedDiagnosticFactory1.create(ERROR, "No value passed for parameter {0}", DescriptorRenderer.TEXT);
     ParameterizedDiagnosticFactory1<JetType> MISSING_RECEIVER = ParameterizedDiagnosticFactory1.create(ERROR, "A receiver of type {0} is required");
     SimpleDiagnosticFactory NO_RECEIVER_ADMITTED = SimpleDiagnosticFactory.create(ERROR, "No receiver can be passed to this function or property");
 

compiler/frontend/src/org/jetbrains/jet/lang/resolve/ClassDescriptorResolver.java

@@ -258,9 +258,8 @@ public class ClassDescriptorResolver {
             valueParameter.isMutable() ? type : null,
             type,
             valueParameter.getDefaultValue() != null,
-            false // TODO : varargs
-    );
-        // TODO : Default values???
+            valueParameter.hasModifier(JetTokens.VARARG_KEYWORD)
+        );
 
         trace.record(BindingContext.VALUE_PARAMETER, valueParameter, valueParameterDescriptor);
         return valueParameterDescriptor;

compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/ValueArgumentsToParametersMapper.java

@@ -148,7 +148,7 @@ import static org.jetbrains.jet.lang.resolve.BindingContext.REFERENCE_TARGET;
 
         for (ValueParameterDescriptor valueParameter : valueParameters) {
             if (!usedParameters.contains(valueParameter)) {
-                if (!valueParameter.hasDefaultValue()) {
+                if (!valueParameter.hasDefaultValue() && !valueParameter.isVararg()) {
 //                    tracing.reportWrongValueArguments(temporaryTrace, "No value passed for parameter " + valueParameter.getName());
                     tracing.noValueForParameter(temporaryTrace, valueParameter);
                     error = true;

compiler/frontend/src/org/jetbrains/jet/lexer/JetTokens.java

@@ -135,6 +135,7 @@ public interface JetTokens {
     JetKeywordToken PROTECTED_KEYWORD = JetKeywordToken.softKeyword("protected");
     JetKeywordToken CATCH_KEYWORD     = JetKeywordToken.softKeyword("catch");
     JetKeywordToken OUT_KEYWORD       = JetKeywordToken.softKeyword("out");
+    JetKeywordToken VARARG_KEYWORD       = JetKeywordToken.softKeyword("vararg");
 
     JetKeywordToken FINALLY_KEYWORD   = JetKeywordToken.softKeyword("finally");
     JetKeywordToken FINAL_KEYWORD   = JetKeywordToken.softKeyword("final");
@@ -154,12 +155,12 @@ public interface JetTokens {
     TokenSet SOFT_KEYWORDS = TokenSet.create(IMPORT_KEYWORD, WHERE_KEYWORD, BY_KEYWORD, GET_KEYWORD,
             SET_KEYWORD, ABSTRACT_KEYWORD, ENUM_KEYWORD, OPEN_KEYWORD, ANNOTATION_KEYWORD,
             OVERRIDE_KEYWORD, PRIVATE_KEYWORD, PUBLIC_KEYWORD, INTERNAL_KEYWORD, PROTECTED_KEYWORD,
-            CATCH_KEYWORD, FINALLY_KEYWORD, REF_KEYWORD, OUT_KEYWORD, FINAL_KEYWORD
+            CATCH_KEYWORD, FINALLY_KEYWORD, REF_KEYWORD, OUT_KEYWORD, FINAL_KEYWORD, VARARG_KEYWORD
     );
 
     TokenSet MODIFIER_KEYWORDS = TokenSet.create(ABSTRACT_KEYWORD, ENUM_KEYWORD,
             OPEN_KEYWORD, ANNOTATION_KEYWORD, OVERRIDE_KEYWORD, PRIVATE_KEYWORD, PUBLIC_KEYWORD, INTERNAL_KEYWORD,
-            PROTECTED_KEYWORD, REF_KEYWORD, OUT_KEYWORD, IN_KEYWORD, FINAL_KEYWORD
+            PROTECTED_KEYWORD, REF_KEYWORD, OUT_KEYWORD, IN_KEYWORD, FINAL_KEYWORD, VARARG_KEYWORD
     );
     TokenSet WHITE_SPACE_OR_COMMENT_BIT_SET = TokenSet.create(WHITE_SPACE, BLOCK_COMMENT, EOL_COMMENT, DOC_COMMENT);
     TokenSet WHITESPACES = TokenSet.create(TokenType.WHITE_SPACE);

compiler/frontend/src/org/jetbrains/jet/resolve/DescriptorRenderer.java

@@ -133,6 +133,9 @@ public class DescriptorRenderer implements Renderer {
         @Override
         public Void visitValueParameterDescriptor(ValueParameterDescriptor descriptor, StringBuilder builder) {
             builder.append(renderKeyword("value-parameter")).append(" ");
+            if (descriptor.isVararg()) {
+                builder.append(renderKeyword("vararg")).append(" ");
+            }
             return super.visitValueParameterDescriptor(descriptor, builder);
         }
 

idea/testData/checkerWithErrorTypes/quick/NamedArgumentsAndDefaultValues.jet

@@ -1,6 +1,9 @@
 fun foo(a : Int = 1, b : String = "abc") {
 }
 
+fun bar(x : Int = "", y : Int = 1, z : String) {
+}
+
 fun test() {
     foo()
     foo(2)

idea/testData/checkerWithErrorTypes/quick/Varargs.jet

@@ -0,0 +1,17 @@
+fun v(x : Int, y : String, vararg f : Long) {}
+fun v1(vararg f : fun (Int) : Unit) {}
+
+fun test() {
+    v(1, "")
+    v(1, "", 1)
+    v(1, "", 1, 1, 1)
+    v(1, "", 1, 1, 1)
+
+    v1()
+    v1({})
+    v1({}, {})
+    v1({}, <!ERROR_COMPILE_TIME_VALUE!>1<!>, {})
+    v1({}, {}, {it})
+    v1({}) <!VARARG_OUTSIDE_PARENTHESES!>{}<!>
+    v1 <!VARARG_OUTSIDE_PARENTHESES!>{}<!>
+}