Добавлена конструкция IF-THEN-ELSE-END

[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 f111fd16eff755440676a4b6a6e433713cc43b4b..b17711bd5627d68a54b5dd06c4a475023a1a204a 100644 (file)
--- a/src/backends/jvm/generator-jvm.c
+++ b/src/backends/jvm/generator-jvm.c
@@ -1247,6 +1247,70 @@ oberon_generate_end_proc(oberon_context_t * ctx)
        jvm_generate_function_end(p);
 }
 
+gen_label_t *
+oberon_generator_reserve_label(oberon_context_t * ctx)
+{
+       gen_module_t * m;
+       gen_proc_t * p;
+       gen_label_t * l;
+
+       m = ctx -> mod -> gen_mod;
+       p = m -> class -> p;
+
+       l = GC_MALLOC(sizeof *l);
+       memset(l, 0, sizeof *l);
+
+       l -> id = jvm_new_label_id(p);
+       return l;
+}
+
+void
+oberon_generate_label(oberon_context_t * ctx, gen_label_t * l)
+{
+       gen_module_t * m;
+       gen_proc_t * p;
+
+       m = ctx -> mod -> gen_mod;
+       p = m -> class -> p;
+
+       jvm_generate_label(p, l -> id);
+}
+
+void
+oberon_generate_goto(oberon_context_t * ctx, gen_label_t * l)
+{
+       gen_module_t * m;
+       gen_proc_t * p;
+
+       m = ctx -> mod -> gen_mod;
+       p = m -> class -> p;
+
+       jvm_generate(p, 0, 0, "goto L%i", l -> id);
+}
+
+void
+oberon_generate_branch(oberon_context_t * ctx, oberon_expr_t * cond, bool gotoif, gen_label_t * l)
+{
+       gen_module_t * m;
+       gen_proc_t * p;
+
+       m = ctx -> mod -> gen_mod;
+       p = m -> class -> p;
+
+       push_expr(p, cond);
+
+       if(gotoif == false)
+       {
+               /* переход если false */
+               jvm_generate(p, 1, 0, "ifeq L%i", l -> id);
+       }
+       else
+       {
+               /* переход если true */
+               jvm_generate(p, 1, 0, "ifne L%i", l -> id);
+       }
+}
+
 static void
 jvm_generate_call_proc(gen_proc_t * p, oberon_item_t * desig)
 {
@@ -1458,7 +1522,7 @@ jvm_generate_abs(gen_proc_t * p, char prefix)
 }
 
 static void
-jvm_generate_compare_op(gen_proc_t * p, char prefix, int op)
+jvm_generate_compare_op(gen_proc_t * p, oberon_type_t * t, char prefix, int op)
 {
        int label_true = jvm_new_label_id(p);
        int label_done = jvm_new_label_id(p);
@@ -1503,7 +1567,7 @@ jvm_generate_compare_op(gen_proc_t * p, char prefix, int op)
 }
 
 static void
-jvm_generate_operator(gen_proc_t * p, char prefix, int op)
+jvm_generate_operator(gen_proc_t * p, oberon_type_t * t, char prefix, int op)
 {
        int cell_size = jvm_cell_size_for_postfix(prefix);
        switch(op)
@@ -1553,7 +1617,7 @@ jvm_generate_operator(gen_proc_t * p, char prefix, int op)
                case OP_LEQ:
                case OP_GRT:
                case OP_GEQ:
-                       jvm_generate_compare_op(p, prefix, op);
+                       jvm_generate_compare_op(p, t, prefix, op);
                        break;
                default:
                        gen_error("jvm_generate_operator: unk op %i", op);
@@ -1602,6 +1666,7 @@ jvm_generate_logical_and(gen_proc_t * p, oberon_expr_t * a, oberon_expr_t * b)
 static void
 push_operator(gen_proc_t * p, oberon_oper_t * oper)
 {
+       oberon_type_t * preq = oper -> left -> result;
        char prefix = jvm_get_prefix(oper -> result);
        int op = oper -> op;
        switch(op)
@@ -1615,7 +1680,7 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper)
                case OP_LOGIC_NOT:
                case OP_ABS:
                        push_expr(p, oper -> left);
-                       jvm_generate_operator(p, prefix, op);
+                       jvm_generate_operator(p, preq, prefix, op);
                        break;
 
                case OP_ADD:
@@ -1635,7 +1700,7 @@ push_operator(gen_proc_t * p, oberon_oper_t * oper)
                case OP_GEQ:
                        push_expr(p, oper -> left);
                        push_expr(p, oper -> right);
-                       jvm_generate_operator(p, prefix, op);
+                       jvm_generate_operator(p, preq, prefix, op);
                        break;
 
                case OP_LOGIC_OR: