[PRISM] Fix __LINE__ to be 1-indexed by default

prism_compile.c

@@ -280,8 +280,13 @@ pm_static_literal_value(const pm_node_t *node, pm_scope_node_t *scope_node, pm_p
         pm_source_file_node_t *cast = (pm_source_file_node_t *)node;
         return cast->filepath.length ? parse_string(&cast->filepath, parser) : rb_fstring_lit("<compiled>");
       }
-      case PM_SOURCE_LINE_NODE:
-        return INT2FIX((int) pm_newline_list_line_column(&scope_node->parser->newline_list, node->location.start).line);
+      case PM_SOURCE_LINE_NODE: {
+        int source_line = (int) pm_newline_list_line_column(&scope_node->parser->newline_list, node->location.start).line;
+        // Ruby treats file lines as 1-indexed
+        // TODO: Incorporate options which allow for passing a line number
+        source_line += 1;
+        return INT2FIX(source_line);
+      }
       case PM_STRING_NODE:
         return parse_string(&((pm_string_node_t *) node)->unescaped, parser);
       case PM_SYMBOL_NODE:

test/ruby/test_compile_prism.rb

@@ -56,7 +56,7 @@ module Prism
     end
 
     def test_SourceLineNode
-      ruby_eval = RubyVM::InstructionSequence.compile_prism("__LINE__").eval
+      ruby_eval = RubyVM::InstructionSequence.compile("__LINE__").eval
       prism_eval = RubyVM::InstructionSequence.compile_prism("__LINE__").eval
 
       assert_equal ruby_eval, prism_eval