Record argument count requirements #37

Signed-off-by: Mārtiņš Avots <martins.avots@splitcells.net>

Author: martins-avots

projects/net.splitcells.gel.editor/src/main/java/net/splitcells/gel/editor/geal/FunctionCallRecord.java

@@ -82,6 +82,8 @@ public static FunctionCallRecord functionCallRecord(Optional<Object> argSubject,
     @Getter Map<Integer, List<Class<?>>> argumentTypeArguments = map();
     @Getter Boolean onlyAttributesAsArgument = false;
     @Getter int onlyAttributesAsArgumentsFrom = -1;
+    @Getter int requiredArgumentCount = -1;
+    @Getter int requiredMinimalArgumentCount = -1;
 
     private FunctionCallRecord(Optional<Object> argSubject, FunctionCallDesc argFunctionCall, Editor argContext, String argName, int argVariation, boolean argIsRecording) {
         name = argName;
@@ -99,6 +101,7 @@ public FunctionCallRecord addDescription(String addition) {
 
     public void requireArgumentCount(int requiredArgumentCount) {
         if (isRecording) {
+            this.requiredArgumentCount = requiredArgumentCount;
             return;
         }
         if (functionCall.getArguments().size() != requiredArgumentCount) {
@@ -115,6 +118,7 @@ public void requireArgumentCount(int requiredArgumentCount) {
 
     public void requireArgumentMinimalCount(int requiredMinimum) {
         if (isRecording) {
+            requiredMinimalArgumentCount = requiredMinimum;
             return;
         }
         if (functionCall.getArguments().size() < requiredMinimum) {

projects/net.splitcells.gel.editor/src/main/java/net/splitcells/gel/editor/geal/runners/FunctionCallRunnerParser.java

@@ -72,6 +72,12 @@ public Tree document(Editor context) {
                         .orElseThrow();
                 list.withChild(tree("item", SEW).withText("The subject has to be one of the following types: " + typesDescription));
             }
+            if (fcr.getRequiredArgumentCount() != -1) {
+                list.withChild(tree("item", SEW).withText("Exactly " + fcr.getRequiredArgumentCount() + " arguments have to be present."));
+            }
+            if (fcr.getRequiredMinimalArgumentCount() != -1) {
+                list.withChild(tree("item", SEW).withText("At least " + fcr.getRequiredMinimalArgumentCount() + " arguments have to be present."));
+            }
             if (fcr.getOnlyAttributesAsArgument()) {
                 tree("list", SEW).withParent(functionCallDoc).withText("Only attribute references are allowed as arguments.");
             } else {