Warning: This file is not a C or C++ file. It does not have highlighting.

1//===-- Format specifier converter for scanf -------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_LIBC_SRC_STDIO_SCANF_CORE_CONVERTER_UTILS_H
10#define LLVM_LIBC_SRC_STDIO_SCANF_CORE_CONVERTER_UTILS_H
11
12#include "src/__support/ctype_utils.h"
13#include "src/__support/macros/config.h"
14#include "src/__support/str_to_float.h"
15#include "src/stdio/scanf_core/core_structs.h"
16
17#include <stddef.h>
18
19namespace LIBC_NAMESPACE_DECL {
20namespace scanf_core {
21
22LIBC_INLINE void write_int_with_length(uintmax_t output_val,
23 const FormatSection &to_conv) {
24 if ((to_conv.flags & NO_WRITE) != 0) {
25 return;
26 }
27 void *output_ptr = to_conv.output_ptr;
28 // The %p conversion uses this function, and is always void*.
29 if (to_conv.conv_name == 'p') {
30 *reinterpret_cast<void **>(output_ptr) =
31 reinterpret_cast<void *>(output_val);
32 return;
33 }
34 LengthModifier lm = to_conv.length_modifier;
35 switch (lm) {
36 case (LengthModifier::hh):
37 *reinterpret_cast<unsigned char *>(output_ptr) =
38 static_cast<unsigned char>(output_val);
39 break;
40 case (LengthModifier::h):
41 *reinterpret_cast<unsigned short *>(output_ptr) =
42 static_cast<unsigned short>(output_val);
43 break;
44 case (LengthModifier::NONE):
45 *reinterpret_cast<unsigned int *>(output_ptr) =
46 static_cast<unsigned int>(output_val);
47 break;
48 case (LengthModifier::l):
49 *reinterpret_cast<unsigned long *>(output_ptr) =
50 static_cast<unsigned long>(output_val);
51 break;
52 case (LengthModifier::ll):
53 case (LengthModifier::L):
54 *reinterpret_cast<unsigned long long *>(output_ptr) =
55 static_cast<unsigned long long>(output_val);
56 break;
57 case (LengthModifier::j):
58 *reinterpret_cast<uintmax_t *>(output_ptr) =
59 static_cast<uintmax_t>(output_val);
60 break;
61 case (LengthModifier::z):
62 *reinterpret_cast<size_t *>(output_ptr) = static_cast<size_t>(output_val);
63 break;
64 case (LengthModifier::t):
65 *reinterpret_cast<ptrdiff_t *>(output_ptr) =
66 static_cast<ptrdiff_t>(output_val);
67 break;
68 }
69}
70
71LIBC_INLINE void write_float_with_length(char *str,
72 const FormatSection &to_conv) {
73 if ((to_conv.flags & NO_WRITE) != 0) {
74 return;
75 }
76
77 void *output_ptr = to_conv.output_ptr;
78
79 LengthModifier lm = to_conv.length_modifier;
80 switch (lm) {
81 case (LengthModifier::l): {
82 auto value = internal::strtofloatingpoint<double>(str);
83 *reinterpret_cast<double *>(output_ptr) = value;
84 break;
85 }
86 case (LengthModifier::L): {
87 auto value = internal::strtofloatingpoint<long double>(str);
88 *reinterpret_cast<long double *>(output_ptr) = value;
89 break;
90 }
91 default: {
92 auto value = internal::strtofloatingpoint<float>(str);
93 *reinterpret_cast<float *>(output_ptr) = value;
94 break;
95 }
96 }
97}
98
99} // namespace scanf_core
100} // namespace LIBC_NAMESPACE_DECL
101
102#endif // LLVM_LIBC_SRC_STDIO_SCANF_CORE_CONVERTER_UTILS_H
103

Warning: This file is not a C or C++ file. It does not have highlighting.

source code of libc/src/stdio/scanf_core/converter_utils.h