start on generic codegen

src/codegen.c

@@ -56,6 +56,12 @@ typedef struct StructTypeFunction
     uint8_t isStatic;
 } StructTypeFunction;
 
+typedef struct GenericStructFunction
+{
+    char *name;
+    Node *functionDeclaration;
+} GenericStructFunction;
+
 typedef struct StructTypeDeclaration
 {
     char *name;
@@ -66,6 +72,9 @@ typedef struct StructTypeDeclaration
 
     StructTypeFunction *functions;
     uint32_t functionCount;
+
+    GenericStructFunction *genericFunctions;
+    uint32_t genericFunctionCount;
 } StructTypeDeclaration;
 
 StructTypeDeclaration *structTypeDeclarations;
@@ -299,6 +308,27 @@ static void DeclareStructFunction(
     fprintf(stderr, "Could not find struct type for function!\n");
 }
 
+static void DeclareGenericFunction(
+    LLVMTypeRef structPointerType,
+    Node *functionDeclaration
+) {
+    uint32_t i, index;
+
+    for (i = 0; i < structTypeDeclarationCount; i += 1)
+    {
+        if (structTypeDeclarations[i].structPointerType == structPointerType)
+        {
+            index = structTypeDeclarations[i].genericFunctionCount;
+            structTypeDeclarations[i].genericFunctions = realloc(structTypeDeclarations[i].genericFunctions, sizeof(GenericStructFunction) * (structTypeDeclarations[i].genericFunctionCount + 1));
+            structTypeDeclarations[i].genericFunctions[i].name = strdup(functionDeclaration->children[0]->children[0]->value.string);
+            structTypeDeclarations[i].genericFunctions[i].functionDeclaration = functionDeclaration;
+            structTypeDeclarations[i].genericFunctionCount += 1;
+
+            return;
+        }
+    }
+}
+
 static LLVMTypeRef LookupCustomType(char *name)
 {
     uint32_t i;
@@ -337,6 +367,12 @@ static LLVMTypeRef ResolveType(Node* typeNode)
     }
 }
 
+static LLVMValueRef LookupGenericFunction(
+
+) {
+
+}
+
 static LLVMValueRef LookupFunctionByType(
     LLVMTypeRef structType,
     char *name,
@@ -386,6 +422,14 @@ static LLVMValueRef LookupFunctionByPointerType(
                     return structTypeDeclarations[i].functions[j].function;
                 }
             }
+
+            for (j = 0; j < structTypeDeclarations[i].genericFunctionCount; j += 1)
+            {
+                if (strcmp(structTypeDeclarations[i].genericFunctions[j].name, name) == 0)
+                {
+                    return LookupGenericFunction()
+                }
+            }
         }
     }
 
@@ -872,6 +916,12 @@ static void CompileFunction(
         paramIndex += 1;
     }
 
+    if (functionSignature->children[4]->childCount > 0)
+    {
+        DeclareGenericFunction(wStructPointerType, functionDeclaration);
+        return;
+    }
+
     PushScopeFrame(scope);
 
     /* FIXME: should work for non-primitive types */