Improve line directive mapping

core_codegen_c_language.cpp

@@ -13,10 +13,12 @@ gen_indent(){
 }
 
 global Intern_String last_filename;
+global int last_line;
 function void
 gen_line(Ast *node){
   if(emit_line_directives){
-    genln("#line %d", node->pos->line+1);
+    last_line = node->pos->line+1;
+    genln("#line %d", last_line);
     if(node->pos->file != last_filename){
       last_filename = node->pos->file;
       gen(" \"%Q\"", last_filename);
@@ -24,6 +26,13 @@ gen_line(Ast *node){
   }
 }
 
+function void
+gen_last_line(){
+  if(emit_line_directives){
+    genln("#line %d", last_line);
+  }
+}
+
 function String
 string_scope_name(Allocator *a, Ast_Scope *scope){
   String string = {};
@@ -217,6 +226,7 @@ gen_stmt_scope(Ast_Scope *scope, B32 switch_case_gen_break = 0){
   }
   if(switch_case_gen_break == 1) genln("break;");
   global_indent--;
+  gen_last_line();
   genln("}");
 }
 
@@ -560,6 +570,7 @@ gen_ast(Ast *ast){
           gen_ast(it);
         }
         global_indent--;
+        gen_last_line();
         genln("}");
       }
 
@@ -679,6 +690,7 @@ gen_ast(Ast *ast){
       }
 
       global_indent--;
+      gen_last_line();
       genln("}");
 
       BREAK();