From 100944cc1ecf28785e5007644f7a24e49267ba4e Mon Sep 17 00:00:00 2001
From: Maxwell Jeffress <maxwelljeffress@proton.me>
Date: Sat, 17 Jan 2026 19:58:21 +1100
Subject: [PATCH] init instruction, mroe struct stuff

---
 src/interpreter.c | 105 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 103 insertions(+), 2 deletions(-)

diff --git a/src/interpreter.c b/src/interpreter.c
index e904467..be2b232 100644
--- a/src/interpreter.c
+++ b/src/interpreter.c
@@ -251,6 +251,19 @@ GroundStruct parseStruct(GroundProgram* in, size_t errorOffset) {
     for (size_t i = 0; i < in->size; i++) {
         switch (in->instructions[i].type) {
             case SET: {
+                if (in->instructions[i].args.length < 2) {
+                    runtimeError(TOO_FEW_ARGS, "Expecting 2 args", &in->instructions[i], i + errorOffset);
+                }
+                if (in->instructions[i].args.length > 2) {
+                    runtimeError(TOO_MANY_ARGS, "Expecting 2 args", &in->instructions[i], i + errorOffset);
+                }
+                if (in->instructions[i].args.args[0].type != DIRREF) {
+                    runtimeError(ARG_TYPE_MISMATCH, "Expecting a DirectRef for arg 1", &in->instructions[i], i + errorOffset);
+                }
+                if (in->instructions[i].args.args[1].type != VALUE) {
+                    runtimeError(ARG_TYPE_MISMATCH, "Expecting a Value for arg 2", &in->instructions[i], i + errorOffset);
+                }
+                addFieldToStruct(&gstruct, in->instructions[i].args.args[0].value.refName, in->instructions[i].args.args[1].value.value);
                 break;
             }
             case INIT: {
@@ -259,6 +272,9 @@ GroundStruct parseStruct(GroundProgram* in, size_t errorOffset) {
             case FUN: {
                 break;
             }
+            case ENDSTRUCT: {
+                break;
+            }
             default: {
                 runtimeError(INVALID_INSTRUCTION, "Unsupported instruction while inside struct", &in->instructions[i], errorOffset + i);
             }
@@ -334,7 +350,8 @@ GroundValue interpretGroundProgram(GroundProgram* in, GroundScope* inScope) {
             if (in->instructions[i].args.args[0].type != TYPEREF) {
                 runtimeError(ARG_TYPE_MISMATCH, "Expected arg 1 to be a typeref", &in->instructions[i], i);
             }
-            char* name = in->instructions[i].args.args[0].value.refName;
+            char* name = malloc(strlen(in->instructions[i].args.args[0].value.refName) + 1);
+            strcpy(name, in->instructions[i].args.args[0].value.refName);
             i++;
 
             size_t counter = 1;
@@ -354,7 +371,13 @@ GroundValue interpretGroundProgram(GroundProgram* in, GroundScope* inScope) {
                 i++;
             }
 
-            GroundStruct gs = parseStruct(&gp, errorOffset);
+            GroundValue gv = {
+                .type = STRUCTVAL,
+                .data.structVal = malloc(sizeof(GroundStruct))
+            };
+            *gv.data.structVal = parseStruct(&gp, errorOffset);
+
+            addVariable(scope.variables, name, gv);
         }
     }
     for (size_t i = 0; i < in->size; i++) {
@@ -1702,6 +1725,84 @@ GroundValue interpretGroundInstruction(GroundInstruction inst, GroundScope* scop
             break;
         }
 
+        case INIT: {
+            if (in->args.length < 2) {
+                runtimeError(TOO_FEW_ARGS, "Expecting 2 args", in, currentInstruction);
+            }
+            if (in->args.length > 2) {
+                runtimeError(TOO_MANY_ARGS, "Expecting 2 args", in, currentInstruction);
+            }
+            if (in->args.args[0].type != DIRREF) {
+                runtimeError(ARG_TYPE_MISMATCH, "Expecting a DirectRef for arg 1", in, currentInstruction);
+            }
+            if (in->args.args[1].type != TYPEREF) {
+                runtimeError(ARG_TYPE_MISMATCH, "Expecting a TypeRef for arg 2", in, currentInstruction);
+            }
+
+            GroundValue gv;
+
+            switch (stringToValueType(in->args.args[0].value.refName)) {
+                case INT: {
+                    gv = createIntGroundValue(0);
+                    break;
+                }
+                case DOUBLE: {
+                    gv = createDoubleGroundValue(0);
+                    break;
+                }
+                case STRING: {
+                    gv = createStringGroundValue("");
+                    break;
+                }
+                case CHAR: {
+                    gv = createCharGroundValue('\0');
+                    break;
+                }
+                case BOOL: {
+                    gv = createBoolGroundValue(false);
+                    break;
+                }
+                case LIST: {
+                    gv = createListGroundValue(createList());
+                    break;
+                }
+                case FUNCTION: {
+                    gv = createFunctionGroundValue(createGroundFunction());
+                    break;
+                }
+                case STRUCTVAL: {
+                    gv.type = STRUCTVAL;
+                    gv.data.structVal = malloc(sizeof(GroundStruct));
+                    *gv.data.structVal = createStruct();
+                    break;
+                }
+                case CUSTOM: {
+                    GroundVariable* var = findVariable(*scope->variables, in->args.args[1].value.refName);
+                    if (var == NULL) {
+                        runtimeError(UNKNOWN_VARIABLE, "Couldn't find the specified type", in, currentInstruction);
+                    }
+                    if (var->value.type != STRUCTVAL) {
+                        runtimeError(ARG_TYPE_MISMATCH, "TypeRef does not reference a struct", in, currentInstruction);
+                    }
+                    GroundStruct* gstruct = var->value.data.structVal;
+                    gv.type = CUSTOM;
+                    gv.data.customVal = malloc(sizeof(GroundObject));
+                    *gv.data.customVal = createObject(*gstruct);
+                    break;
+                }
+                case NONE: {
+                    gv.type = NONE;
+                    break;
+                }
+                default: {
+                    runtimeError(FIXME, "Reached should-be-impossible state", in, currentInstruction);
+                    break;
+                }
+            }
+
+            break;
+        }
+
         case DROP: {
             if (in->args.length < 1) {
                 runtimeError(TOO_FEW_ARGS, "Expecting 1 arg", in, currentInstruction);