From b743e03fc6042e3e2d55cfa0387c092824de64c5 Mon Sep 17 00:00:00 2001
From: Bad Diode <bd@badd10de.dev>
Date: Sun, 24 Oct 2021 09:52:09 +0200
Subject: Add print/display/newline ops

---
 src/bytecode/vm.h | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

(limited to 'src/bytecode/vm.h')

diff --git a/src/bytecode/vm.h b/src/bytecode/vm.h
index b3dd8c3..f1886ec 100755
--- a/src/bytecode/vm.h
+++ b/src/bytecode/vm.h
@@ -159,8 +159,37 @@ vm_interpret(VM *vm, Chunk *chunk) {
             case OP_GREATER: { FIXNUM_COMPARE_OP(>); } break;
             case OP_LESS_EQUAL: { FIXNUM_COMPARE_OP(<=); } break;
             case OP_GREATER_EQUAL: { FIXNUM_COMPARE_OP(>=); } break;
-            case OP_RETURN: {
+            case OP_DISPLAY: {
                 display(array_pop(vm->stack));
+            } break;
+            case OP_PRINT: {
+                Object obj = array_pop(vm->stack);
+                if (!IS_STRING(obj)) {
+                    WRONG_ARG_ERR();
+                }
+                StringView scanner = (StringView) {
+                    .start = obj.text,
+                    .n = array_size(obj.text),
+                };
+                while (scanner.n != 0) {
+                    char c = sv_next(&scanner);
+                    if (c == '\\' && sv_peek(&scanner) == 'n') {
+                        putchar('\n');
+                        sv_next(&scanner);
+                        continue;
+                    }
+                    if (c == '\\' && sv_peek(&scanner) == '"') {
+                        putchar('"');
+                        sv_next(&scanner);
+                        continue;
+                    }
+                    putchar(c);
+                }
+            } break;
+            case OP_NEWLINE: {
+                printf("\n");
+            } break;
+            case OP_RETURN: {
                 printf("\n");
                 return;
             } break;
-- 
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