private void IncreaseNumUseVar(local_variable_reference lvr)
{
VarInfo vi = helper.GetVariable(lvr.var);
vi.num_use++;
vi.act_num_use++;
vi.cur_use++;
//if (vi.cur_ass == 0 && !lvr.var.name.Contains("$")) helper.AddTempWarning(lvr.var,new UseWithoutAssign(lvr.var.name, lvr.location));
}
public void AddVariable(var_definition_node vdn)
{
VarInfo vi = new VarInfo();
if (ht[vdn] == null)
{
ht[vdn] = vi;
}
}
private void IncreaseNumAssVar(local_block_variable_reference lvr)
{
VarInfo vi = helper.GetVariable(lvr.var);
vi.num_use++;
vi.cur_ass++;
vi.num_ass++;
vi.last_ass_loc = lvr.location;
if (vi.last_ass_loc == null)
{
vi.num_ass--;
}
if (vi.cur_use > 0)
{
vi.cur_use--;
}
}
private void CollectInfoNamespaces(common_namespace_node cnn)
{
if (!cnn.from_pcu)
{
if (cnn.is_main)
{
foreach (var_definition_node vdn2 in cnn.variables)
{
if (vdn2 is namespace_variable)
{
namespace_variable vdn = vdn2 as namespace_variable;
VarInfo vi = helper.GetVariable(vdn);
if (vi.num_use == 0 && !vdn.is_special_name)
{
warns.Add(new UnusedVariable(vdn.name, vdn.loc));
}
if (vi.num_ass > 0 && vi.act_num_use == 0)
{
warns.Add(new AssignWithoutUsing(vdn.name, vi.last_ass_loc));
}
//if (vi.num_ass == 0 && vi.act_num_use > 0) helper.AddRealWarning(vdn, warns);
}
else if (vdn2 is local_block_variable)
{
local_block_variable vdn = vdn2 as local_block_variable;
VarInfo vi = helper.GetVariable(vdn);
if (vi.num_use == 0 && !vdn.is_special_name)
{
warns.Add(new UnusedVariable(vdn.name, vdn.loc));
}
if (vi.num_ass > 0 && vi.act_num_use == 0)
{
warns.Add(new AssignWithoutUsing(vdn.name, vi.last_ass_loc));
}
}
}
}
foreach (common_type_node ctn in cnn.types)
{
CollectInfoFields(ctn);
}
}
}
private void VisitStatementList(statements_list stmt)
{
statement_node sn = null;
foreach (local_block_variable lbv in stmt.local_variables)
{
helper.AddVariable(lbv);
if (lbv.inital_value != null)
{
VisitExpression(lbv.inital_value);
}
CheckType(lbv.type, lbv.inital_value, lbv.loc);
}
for (int i = 0; i < stmt.statements.Count; i++)
{
if (is_break_stmt && stmt.statements[i].semantic_node_type != semantic_node_type.empty_statement)
{
warns.Add(new UnreachableCodeDetected(stmt.statements[i].location));
}
is_break_stmt = false;
sn = stmt.statements[i];
VisitStatement(sn);
if (is_break_stmt && i < stmt.statements.Count - 1 && stmt.statements[i + 1].semantic_node_type != semantic_node_type.empty_statement)
{
warns.Add(new UnreachableCodeDetected(stmt.statements[i + 1].location));
}
is_break_stmt = false;
}
foreach (local_block_variable vdn in stmt.local_variables)
{
VarInfo vi = helper.GetVariable(vdn);
if (vi.num_use == 0 && !vdn.is_special_name)
{
warns.Add(new UnusedVariable(vdn.name, vdn.loc));
}
if (vi.num_ass > 0 && vi.act_num_use == 0 && !vdn.is_special_name)
{
warns.Add(new AssignWithoutUsing(vdn.name, vi.last_ass_loc));
}
}
}
public void AddVariable(var_definition_node vdn)
{
VarInfo vi = new VarInfo();
ht[vdn] = vi;
}
private void VisitNestedFunction(common_in_function_function_node cnfn)
{
if (extended_mode)
{
VisitVariables(cnfn.var_definition_nodes_list);
}
foreach (var_definition_node vdn in cnfn.var_definition_nodes_list)
{
helper.AddVariable(vdn);
}
foreach (common_parameter prm in cnfn.parameters)
{
helper.AddParameter(prm);
}
foreach (common_in_function_function_node nested in cnfn.functions_nodes_list)
{
VisitNestedFunction(nested);
}
cur_func = cnfn;
VisitStatement(cnfn.function_code);
foreach (var_definition_node vdn2 in cnfn.var_definition_nodes_list)
{
if (vdn2 is local_variable)
{
local_variable vdn = vdn2 as local_variable;
VarInfo vi = helper.GetVariable(vdn);
if (vi.num_use == 0 && !vdn.is_special_name)
{
warns.Add(new UnusedVariable(vdn.name, vdn.loc));
}
else if (vi.num_ass == 0 &&
vdn.is_ret_value &&
!cnfn.name.StartsWith("<") &&
cnfn.return_value_type.type_special_kind != SemanticTree.type_special_kind.record &&
!cnfn.return_value_type.IsPointer &&
cnfn.return_value_type.type_special_kind != SemanticTree.type_special_kind.array_wrapper &&
!helper.IsExternal(cnfn))
{
warns.Add(new UndefinedReturnValue(cnfn.name, cnfn.function_code.location));
}
if (vi.num_ass > 0 && vi.act_num_use == 0 && !vdn.is_special_name)
{
warns.Add(new AssignWithoutUsing(vdn.name, vi.last_ass_loc));
}
}
else if (vdn2 is local_block_variable)
{
local_block_variable vdn = vdn2 as local_block_variable;
VarInfo vi = helper.GetVariable(vdn);
if (vi.num_use == 0 && !vdn.is_special_name)
{
warns.Add(new UnusedVariable(vdn.name, vdn.loc));
}
else if (vi.num_ass == 0 &&
vdn.is_ret_value &&
!cnfn.name.StartsWith("<") &&
cnfn.return_value_type.type_special_kind != SemanticTree.type_special_kind.record &&
!cnfn.return_value_type.IsPointer &&
cnfn.return_value_type.type_special_kind != SemanticTree.type_special_kind.array_wrapper &&
!helper.IsExternal(cnfn))
{
warns.Add(new UndefinedReturnValue(cnfn.name, cnfn.function_code.location));
}
if (vi.num_ass > 0 && vi.act_num_use == 0 && !vdn.is_special_name)
{
warns.Add(new AssignWithoutUsing(vdn.name, vi.last_ass_loc));
}
}
if (vdn2.inital_value != null)
{
VisitExpression(vdn2.inital_value);
}
}
foreach (common_parameter prm in cnfn.parameters)
{
ParamInfo vi = helper.GetParameter(prm);
if (prm.inital_value != null)
{
VisitExpression(prm.inital_value);
}
//if (vi.num_use == 0 && !prm.name.Contains("$")) warns.Add(new UnusedParameter(prm.name, prm.loc));
}
foreach (var_definition_node vdn in cnfn.var_definition_nodes_list)
{
VarInfo vi = helper.GetVariable(vdn);
if (vdn.inital_value != null)
{
VisitExpression(vdn.inital_value);
}
}
}
private void VisitMethod(common_method_node cmn)
{
if (extended_mode)
{
VisitVariables(cmn.var_definition_nodes_list);
}
foreach (var_definition_node vdn in cmn.var_definition_nodes_list)
{
helper.AddVariable(vdn);
}
foreach (common_parameter prm in cmn.parameters)
{
helper.AddParameter(prm);
}
foreach (common_in_function_function_node nested in cmn.functions_nodes_list)
{
VisitNestedFunction(nested);
}
cur_func = cmn;
VisitStatement(cmn.function_code);
foreach (var_definition_node vdn2 in cmn.var_definition_nodes_list)
{
if (vdn2 is local_variable)
{
local_variable vdn = vdn2 as local_variable;
VarInfo vi = helper.GetVariable(vdn);
if (vi.num_use == 0 && !vdn.is_special_name)
{
warns.Add(new UnusedVariable(vdn.name, vdn.loc));
}
else if (vi.num_ass == 0 &&
vdn.is_ret_value &&
!cmn.name.StartsWith("<") &&
!cmn.cont_type.IsInterface &&
cmn.polymorphic_state != SemanticTree.polymorphic_state.ps_virtual_abstract &&
cmn.return_value_type != null &&
!cmn.return_value_type.IsPointer &&
!cmn.is_constructor &&
cmn.return_value_type.type_special_kind != SemanticTree.type_special_kind.record &&
cmn.return_value_type.type_special_kind != SemanticTree.type_special_kind.array_wrapper &&
!helper.IsExternal(cmn))
{
warns.Add(new UndefinedReturnValue(cmn.name, cmn.function_code.location));
}
}
else if (vdn2 is local_block_variable)
{
local_block_variable vdn = vdn2 as local_block_variable;
VarInfo vi = helper.GetVariable(vdn);
if (vi.num_use == 0 && !vdn.is_special_name)
{
warns.Add(new UnusedVariable(vdn.name, vdn.loc));
}
else if (vi.num_ass == 0 &&
vdn.is_ret_value &&
!cmn.name.StartsWith("<") &&
!cmn.cont_type.IsInterface &&
cmn.polymorphic_state != SemanticTree.polymorphic_state.ps_virtual_abstract &&
cmn.return_value_type != null &&
!cmn.return_value_type.IsPointer &&
!cmn.is_constructor &&
cmn.return_value_type.type_special_kind != SemanticTree.type_special_kind.record &&
cmn.return_value_type.type_special_kind != SemanticTree.type_special_kind.array_wrapper &&
!helper.IsExternal(cmn))
{
warns.Add(new UndefinedReturnValue(cmn.name, cmn.function_code.location));
}
}
if (vdn2.inital_value != null)
{
VisitExpression(vdn2.inital_value);
}
}
foreach (common_parameter prm in cmn.parameters)
{
ParamInfo vi = helper.GetParameter(prm);
if (prm.inital_value != null)
{
VisitExpression(prm.inital_value);
}
//if (vi.num_use == 0 && !prm.name.Contains("$")) warns.Add(new UnusedParameter(prm.name, prm.loc));
}
foreach (var_definition_node vdn in cmn.var_definition_nodes_list)
{
VarInfo vi = helper.GetVariable(vdn);
if (vdn.inital_value != null)
{
VisitExpression(vdn.inital_value);
}
}
}