1#pragma once
 2
 3/*
 4 * StringIO provides LineReader interface.
 5 * It's a singleton iterator for self.
 6 */
 7
 8#include <pw.h>
 9
10#ifdef __cplusplus
11extern "C" {
12#endif
13
14extern uint16_t PwTypeId_StringIO;
15
16#define pw_is_stringio(value)      pw_is_subtype((value), PwTypeId_StringIO)
17#define pw_assert_stringio(value)  pw_assert(pw_is_stringio(value))
18
19
20/****************************************************************
21 * Constructors
22 */
23
24typedef struct {
25    PwCtorArgs* next;
26    uint16_t type_id;
27
28    PwValuePtr string;
29
30} PwStringIOCtorArgs;
31
32#define pw_create_string_io(result, str) _Generic((str), \
33             char*: _pw_create_string_io_ascii,  \
34          char8_t*: _pw_create_string_io_utf8,   \
35         char32_t*: _pw_create_string_io_utf32,  \
36        PwValuePtr: _pw_create_string_io         \
37    )((result), (str))
38
39[[nodiscard]] static inline bool _pw_create_string_io(PwValuePtr result, PwValuePtr str)
40{
41    PwStringIOCtorArgs args = {
42        .type_id = PwTypeId_StringIO,
43        .string = str
44    };
45    return pw_create2(PwTypeId_StringIO, &args, result);
46}
47
48[[nodiscard]] static inline bool _pw_create_string_io_ascii(PwValuePtr result, char* str)
49{
50    _PwValue s = PwStaticString(str);
51    PwStringIOCtorArgs args = {
52        .type_id = PwTypeId_StringIO,
53        .string = &s
54    };
55    return pw_create2(PwTypeId_StringIO, &args, result);
56}
57
58[[nodiscard]] static inline bool _pw_create_string_io_utf8 (PwValuePtr result, char8_t* str)
59{
60    PwValue s = PW_NULL;
61    if (!pw_create_string(&s, str)) {
62        return false;
63    }
64    PwStringIOCtorArgs args = {
65        .type_id = PwTypeId_StringIO,
66        .string = &s
67    };
68    return pw_create2(PwTypeId_StringIO, &args, result);
69}
70
71[[nodiscard]] static inline bool _pw_create_string_io_utf32(PwValuePtr result, char32_t* str)
72{
73    _PwValue s = PwStaticStringUtf32(str);
74    PwStringIOCtorArgs args = {
75        .type_id = PwTypeId_StringIO,
76        .string = &s
77    };
78    return pw_create2(PwTypeId_StringIO, &args, result);
79}
80
81
82#ifdef __cplusplus
83}
84#endif