Merged branch 'master' into 'feature/fields'.

src/intermediateLowerer/intermediateLowerer.ts

@@ -228,6 +228,12 @@ export class IntermediateLowerer
 
         this.lowerFields(file.fields);
 
+        // Pre-lowering of the function symbols for them to be available in every other function regardless of their order:
+        for (const functionNode of file.functions)
+        {
+            this.lowerFunctionSymbol(functionNode.symbol, file.module);
+        }
+
         for (const functionNode of file.functions)
         {
             this.lowerFunction(functionNode);
@@ -346,7 +352,14 @@ export class IntermediateLowerer
             throw new Error(`Intermediate Lowerer error: Current module is null while lowering a function.`);
         }
 
-        const functionSymbol = this.lowerFunctionSymbol(functionDeclaration.symbol, this.currentModule);
+        const functionSymbol = this.functionSymbolMap.get(functionDeclaration.symbol.namespace.qualifiedName);
+
+        if (functionSymbol === undefined)
+        {
+            throw new Error(
+                `Intermediate Lowerer error: No pre-lowered symbol found for function "${functionDeclaration.symbol.namespace.qualifiedName}".`
+            );
+        }
 
         if (functionDeclaration.symbol.isHeader)
         {

tests/endToEnd/runWithOutput/inputs/functionCall/main.ph

@@ -0,0 +1,14 @@
+module FunctionCall;
+
+import Standard.Io;
+
+function main ()
+{
+    print();
+}
+
+// This includes testing that the order of the functions does not matter ("main" can call "print" even if it is defined later):
+function print ()
+{
+    Io.writeLine('Print called.');
+}

tests/endToEnd/runWithOutput/outputs/functionCall.txt

@@ -0,0 +1 @@
+Print called.