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translate-c: Pointer to/from integral conversion

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This commit is contained in:
LemonBoy 2019-04-16 23:23:31 +02:00
parent d3dd49c403
commit 69bc5fd04d
1 changed files with 38 additions and 8 deletions
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46
src/translate_c.cpp
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@ -1928,12 +1928,6 @@ static AstNode *trans_implicit_cast_expr(Context *c, ResultUsed result_used, Tra
case ZigClangCK_ConstructorConversion:
emit_warning(c, bitcast(stmt->getBeginLoc()), "TODO handle C CK_ConstructorConversion");
return nullptr;
case ZigClangCK_IntegralToPointer:
emit_warning(c, bitcast(stmt->getBeginLoc()), "TODO handle C CK_IntegralToPointer");
return nullptr;
case ZigClangCK_PointerToIntegral:
emit_warning(c, bitcast(stmt->getBeginLoc()), "TODO handle C CK_PointerToIntegral");
return nullptr;
case ZigClangCK_PointerToBoolean:
emit_warning(c, bitcast(stmt->getBeginLoc()), "TODO handle C CK_PointerToBoolean");
return nullptr;
@ -1961,6 +1955,41 @@ static AstNode *trans_implicit_cast_expr(Context *c, ResultUsed result_used, Tra
// Translate as val != 0
return trans_create_node_bin_op(c, val, BinOpTypeCmpNotEq, zero);
}
case ZigClangCK_PointerToIntegral:
{
AstNode *target_node = trans_expr(c, ResultUsedYes, scope, bitcast(stmt->getSubExpr()), TransRValue);
if (target_node == nullptr)
return nullptr;
AstNode *dest_type_node = get_expr_type(c, (const ZigClangExpr *)stmt);
if (dest_type_node == nullptr)
return nullptr;
AstNode *val_node = trans_create_node_builtin_fn_call_str(c, "ptrToInt");
val_node->data.fn_call_expr.params.append(target_node);
// @ptrToInt always returns a usize
AstNode *node = trans_create_node_builtin_fn_call_str(c, "intCast");
node->data.fn_call_expr.params.append(dest_type_node);
node->data.fn_call_expr.params.append(val_node);
return maybe_suppress_result(c, result_used, node);
}
case ZigClangCK_IntegralToPointer:
{
AstNode *target_node = trans_expr(c, ResultUsedYes, scope, bitcast(stmt->getSubExpr()), TransRValue);
if (target_node == nullptr)
return nullptr;
AstNode *dest_type_node = get_expr_type(c, (const ZigClangExpr *)stmt);
if (dest_type_node == nullptr)
return nullptr;
AstNode *node = trans_create_node_builtin_fn_call_str(c, "intToPtr");
node->data.fn_call_expr.params.append(dest_type_node);
node->data.fn_call_expr.params.append(target_node);
return maybe_suppress_result(c, result_used, node);
}
case ZigClangCK_IntegralToFloating:
case ZigClangCK_FloatingToIntegral:
{
@ -1972,11 +2001,12 @@ static AstNode *trans_implicit_cast_expr(Context *c, ResultUsed result_used, Tra
if (dest_type_node == nullptr)
return nullptr;
const bool int_to_float = (ZigClangCK)stmt->getCastKind() == ZigClangCK_IntegralToFloating;
const char *fn = int_to_float ? "intToFloat" : "floatToInt";
char const *fn = (ZigClangCK)stmt->getCastKind() == ZigClangCK_IntegralToFloating ?
"intToFloat" : "floatToInt";
AstNode *node = trans_create_node_builtin_fn_call_str(c, fn);
node->data.fn_call_expr.params.append(dest_type_node);
node->data.fn_call_expr.params.append(target_node);
return maybe_suppress_result(c, result_used, node);
}
case ZigClangCK_FixedPointCast: