--- a/stage3/constant_folding.hh Thu Jul 19 13:42:05 2012 +0100
+++ b/stage3/constant_folding.hh Fri Jul 20 15:50:49 2012 +0100
@@ -45,18 +45,23 @@
class constant_folding_c : public iterator_visitor_c {
+ private:
search_varfb_instance_type_c *search_varfb_instance_type;
search_base_type_c search_base_type;
int error_count;
bool warning_found;
int current_display_error_level;
+ /* Pointer to the previous IL instruction, which contains the current cvalue of the data stored in the IL stack, i.e. the default variable, a.k.a. accumulator */
+ symbol_c *prev_il_instruction;
+ /* the current IL operand being analyzed */
+ symbol_c *il_operand;
-public:
+ public:
constant_folding_c(symbol_c *symbol = NULL);
virtual ~constant_folding_c(void);
int get_error_count();
-private:
+ private:
/*********************/
/* B 1.2 - Constants */
/*********************/
@@ -77,28 +82,98 @@
void *visit(boolean_true_c *symbol);
void *visit(boolean_false_c *symbol);
+ /****************************************/
+ /* B.2 - Language IL (Instruction List) */
+ /****************************************/
+ /***********************************/
+ /* B 2.1 Instructions and Operands */
+ /***********************************/
+ // void *visit(instruction_list_c *symbol); /* Not needed, since we inherit from iterator_visitor_c */
+ void *visit(il_instruction_c *symbol);
+ void *visit(il_simple_operation_c *symbol);
+ //void *visit(il_function_call_c *symbol); /* TODO */
+ void *visit(il_expression_c *symbol);
+ void *visit(il_jump_operation_c *symbol);
+ void *visit(il_fb_call_c *symbol);
+ //void *visit(il_formal_funct_call_c *symbol); /* TODO */
+ //void *visit(il_operand_list_c *symbol); /* Not needed, since we inherit from iterator_visitor_c */
+ void *visit(simple_instr_list_c *symbol);
+ void *visit(il_simple_instruction_c *symbol);
+
+
+ /*******************/
+ /* B 2.2 Operators */
+ /*******************/
+ void *visit( LD_operator_c *symbol);
+ void *visit( LDN_operator_c *symbol);
+ void *visit( ST_operator_c *symbol);
+ void *visit( STN_operator_c *symbol);
+ void *visit( NOT_operator_c *symbol);
+ void *visit( S_operator_c *symbol);
+ void *visit( R_operator_c *symbol);
+ void *visit( S1_operator_c *symbol);
+ void *visit( R1_operator_c *symbol);
+ void *visit( CLK_operator_c *symbol);
+ void *visit( CU_operator_c *symbol);
+ void *visit( CD_operator_c *symbol);
+ void *visit( PV_operator_c *symbol);
+ void *visit( IN_operator_c *symbol);
+ void *visit( PT_operator_c *symbol);
+ void *visit( AND_operator_c *symbol);
+ void *visit( OR_operator_c *symbol);
+ void *visit( XOR_operator_c *symbol);
+ void *visit( ANDN_operator_c *symbol);
+ void *visit( ORN_operator_c *symbol);
+ void *visit( XORN_operator_c *symbol);
+ void *visit( ADD_operator_c *symbol);
+ void *visit( SUB_operator_c *symbol);
+ void *visit( MUL_operator_c *symbol);
+ void *visit( DIV_operator_c *symbol);
+ void *visit( MOD_operator_c *symbol);
+ void *visit( GT_operator_c *symbol);
+ void *visit( GE_operator_c *symbol);
+ void *visit( EQ_operator_c *symbol);
+ void *visit( LT_operator_c *symbol);
+ void *visit( LE_operator_c *symbol);
+ void *visit( NE_operator_c *symbol);
+ void *visit( CAL_operator_c *symbol);
+ void *visit( CALC_operator_c *symbol);
+ void *visit(CALCN_operator_c *symbol);
+ void *visit( RET_operator_c *symbol);
+ void *visit( RETC_operator_c *symbol);
+ void *visit(RETCN_operator_c *symbol);
+ void *visit( JMP_operator_c *symbol);
+ void *visit( JMPC_operator_c *symbol);
+ void *visit(JMPCN_operator_c *symbol);
+ /* Symbol class handled together with function call checks */
+ // void *visit(il_assign_operator_c *symbol, variable_name);
+ /* Symbol class handled together with function call checks */
+ // void *visit(il_assign_operator_c *symbol, option, variable_name);
+
/***************************************/
/* B.3 - Language ST (Structured Text) */
/***************************************/
/***********************/
/* B 3.1 - Expressions */
/***********************/
- void *visit(or_expression_c *symbol);
- void *visit(xor_expression_c *symbol);
- void *visit(and_expression_c *symbol);
- void *visit(equ_expression_c *symbol);
+ void *visit( or_expression_c *symbol);
+ void *visit( xor_expression_c *symbol);
+ void *visit( and_expression_c *symbol);
+ void *visit( equ_expression_c *symbol);
void *visit(notequ_expression_c *symbol);
- void *visit(lt_expression_c *symbol);
- void *visit(gt_expression_c *symbol);
- void *visit(le_expression_c *symbol);
- void *visit(ge_expression_c *symbol);
- void *visit(add_expression_c *symbol);
- void *visit(sub_expression_c *symbol);
- void *visit(mul_expression_c *symbol);
- void *visit(div_expression_c *symbol);
- void *visit(mod_expression_c *symbol);
- void *visit(power_expression_c *symbol);
- void *visit(neg_expression_c *symbol);
- void *visit(not_expression_c *symbol);
+ void *visit( lt_expression_c *symbol);
+ void *visit( gt_expression_c *symbol);
+ void *visit( le_expression_c *symbol);
+ void *visit( ge_expression_c *symbol);
+ void *visit( add_expression_c *symbol);
+ void *visit( sub_expression_c *symbol);
+ void *visit( mul_expression_c *symbol);
+ void *visit( div_expression_c *symbol);
+ void *visit( mod_expression_c *symbol);
+ void *visit( power_expression_c *symbol);
+ void *visit( neg_expression_c *symbol);
+ void *visit( not_expression_c *symbol);
+ //void *visit(function_invocation_c *symbol); /* TODO */
+
};