Для обычных процедур всегда генерируется return

[dsw-obn.git] / src / backends / jvm / generator-jvm.c

diff --git a/src/backends/jvm/generator-jvm.c b/src/backends/jvm/generator-jvm.c
index c063e2fc7fcc03ddd8c2150e03cca24c2220a96a..cb8eeef564ba2925b7eb5701002253f79cdd47d4 100644 (file)
--- a/src/backends/jvm/generator-jvm.c
+++ b/src/backends/jvm/generator-jvm.c
@@ -8,8 +8,8 @@
 
 #include <gc.h>
 
-#include "../../../include/oberon.h"
 #include "../../oberon-internals.h"
+#include "../../generator.h"
 #include "generator-jvm.h"
 #include "generator-jvm-abi.h"
 #include "generator-jvm-asm.h"
@@ -632,6 +632,13 @@ oberon_generator_init_var(oberon_context_t * ctx, oberon_object_t * var)
        struct gen_class * c;
        char * name = var -> name;
        gen_type_t * t = var -> type -> gen_type;
+
+       assert(name);
+       if(t == NULL)
+       {
+               gen_error("uninitialized type class %i", var -> type -> class);
+       }
+
        switch(var -> class)
        {
                case OBERON_CLASS_VAR_PARAM:
@@ -865,10 +872,12 @@ jvm_generate_local_object(gen_proc_t * p, oberon_object_t * x)
                case OBERON_CLASS_VAR:
                        jvm_generate_var(v);
                        break;
+               case OBERON_CLASS_CONST:
+               case OBERON_CLASS_TYPE:
                case OBERON_CLASS_PROC:
                        break;
                default:
-                       gen_error("jvm_generate_local_initialization: wat");
+                       gen_error("jvm_generate_local_initialization: wat class %i", x -> class);
                        break;
        }
 }
@@ -893,10 +902,12 @@ jvm_generate_local_initialization(gen_proc_t * p, oberon_object_t * x)
                case OBERON_CLASS_VAR:
                        jvm_generate_var_initialization(p, v);
                        break;
+               case OBERON_CLASS_CONST:
+               case OBERON_CLASS_TYPE:
                case OBERON_CLASS_PROC:
                        break;
                default:
-                       gen_error("jvm_generate_local_initialization: wat");
+                       gen_error("jvm_generate_local_initialization: wat class %i", x -> class);
                        break;
        }
 
@@ -971,6 +982,7 @@ oberon_generate_end_proc(oberon_context_t * ctx)
        m = ctx -> mod -> gen_mod;
        p = m -> class -> p;
 
+       oberon_generate_trap(ctx, -4);
        jvm_generate_function_end(p);
 }
 
@@ -1207,6 +1219,45 @@ jvm_generate_cast_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to)
        }
 }
 
+static void
+jvm_generate_hard_cast_type(gen_proc_t * p, oberon_type_t * from, oberon_type_t * to)
+{
+       if(from -> class == OBERON_TYPE_REAL
+               && (to -> class == OBERON_TYPE_INTEGER || to -> class == OBERON_TYPE_SYSTEM_BYTE))
+       {
+               char postfix = jvm_get_postfix(to);
+               if(from -> size <= 4)
+               {
+                       jvm_generate(p, 1, 1, "invokestatic java/lang/Float/floatToIntBits(F)I");
+                       jvm_generate_cast_prefix(p, 'i', postfix);
+               }
+               else
+               {
+                       jvm_generate(p, 2, 2, "invokestatic java/lang/Double/doubleToIntBits(D)J");
+                       jvm_generate_cast_prefix(p, 'l', postfix);
+               }
+       }
+       else if((from -> class == OBERON_TYPE_INTEGER || from -> class == OBERON_TYPE_SYSTEM_BYTE)
+               && to -> class == OBERON_TYPE_REAL)
+       {
+               char prefix = jvm_get_prefix(from);
+               if(to -> size <= 4)
+               {
+                       jvm_generate_cast_prefix(p, prefix, 'i');
+                       jvm_generate(p, 1, 1, "invokestatic java/lang/Float/intBitsToFloat(I)F");
+               }
+               else
+               {
+                       jvm_generate_cast_prefix(p, prefix, 'l');
+                       jvm_generate(p, 2, 2, "invokestatic java/lang/Double/longBitsToDouble(J)D");
+               }
+       }
+       else
+       {
+               jvm_generate_cast_type(p, from, to);
+       }
+}
+
 static void
 push_item(gen_proc_t * p, oberon_item_t * item)
 {
@@ -1624,6 +1675,10 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper)
                        push_expr(p, oper -> left);
                        jvm_generate_cast_type(p, oper -> left -> result, oper -> result);
                        break;
+               case OP_HARDCAST:
+                       push_expr(p, oper -> left);
+                       jvm_generate_hard_cast_type(p, oper -> left -> result, oper -> result);
+                       break;
                case OP_COMPLEMENTATION:
                case OP_UNARY_MINUS:
                case OP_LOGIC_NOT: