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string list sub range helper

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This commit is contained in:
Nikita Smith
2026-04-06 12:04:32 -07:00
parent d7cfd5f55a
commit acce76aa4c
5 changed files with 126 additions and 15 deletions
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src/base/base_strings.c
+36
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@@ -1143,6 +1143,42 @@ str8_list_copy(Arena *arena, String8List *list)
return result;
}
internal String8List
str8_list_substr(Arena *arena, String8List list, Rng1U64 range)
{
String8List result = {0};
String8Node *n = list.first;
U64 front_min = 0;
{
U64 cursor = 0;
for (; n != 0; cursor += n->string.size, n = n->next) {
if (cursor + n->string.size > range.min) {
front_min = range.min - cursor;
break;
}
}
}
if (front_min > 0) {
U64 front_max = front_min + Min(dim_1u64(range), n->string.size);
str8_list_push(arena, &result, str8_substr(n->string, r1u64(front_max, front_max)));
n = n->next;
}
for (; n != 0; n = n->next) {
if (result.total_size >= dim_1u64(range)) {
break;
}
U64 copy_max = dim_1u64(range) - result.total_size;
U64 copy_size = Min(copy_max, n->string.size);
str8_list_push(arena, &result, str8_substr(n->string, r1u64(0, copy_size)));
}
return result;
}
////////////////////////////////
//~ rjf: String Splitting & Joining
src/base/base_strings.h
+1
View File
@@ -269,6 +269,7 @@ internal String8Node* str8_list_pushf(Arena *arena, String8List *list, char *fmt
internal String8Node* str8_list_push_frontf(Arena *arena, String8List *list, char *fmt, ...);
internal String8Node* str8_list_pop_front(String8List *list);
internal String8List str8_list_copy(Arena *arena, String8List *list);
internal String8List str8_list_substr(Arena *arena, String8List list, Rng1U64 range);
#define str8_list_first(list) ((list)->first ? (list)->first->string : str8_zero())
////////////////////////////////
src/torture/torture.h
+15 -15
View File
@@ -39,10 +39,10 @@ typedef struct
extern U64 g_torture_test_count;
extern T_Test g_torture_tests[0xffffff];
#define T_AddTest(name, l, ...) \
T_RunResult t_##name(void); \
__VA_ARGS__ void t_add_test_##name(void) \
{ \
#define T_AddTest(name, l, ...) \
T_RunResult t_##name(void); \
__VA_ARGS__ void t_add_test_##name(void) \
{ \
g_torture_tests[g_torture_test_count].group = T_Group; \
g_torture_tests[g_torture_test_count].label = Stringify(name); \
g_torture_tests[g_torture_test_count].r = &t_##name; \
@@ -52,7 +52,7 @@ g_torture_test_count += 1; \
#if COMPILER_MSVC
#pragma section(".CRT$XCU", read)
# define T_BeginTest_(name) \
# define T_BeginTest_(name) \
T_AddTest(name, __LINE__) \
__declspec(allocate(".CRT$XCU")) void(*r_##name)(void) = t_add_test_##name; \
__pragma(comment(linker, "/include:" Stringify(r_##name)))
@@ -61,20 +61,20 @@ __pragma(comment(linker, "/include:" Stringify(r_##name)))
T_AddTest(name, __LINE__, __attribute__((constructor)))
#endif
#define T_BeginTest(name) \
T_BeginTest_(name) \
T_RunResult t_##name(void) { \
#define T_BeginTest(name) \
T_BeginTest_(name) \
T_RunResult t_##name(void) { \
Temp scratch = scratch_begin(0,0); \
T_RunResult result = { .status = T_RunStatus_Fail };
T_RunResult result_ = { .status = T_RunStatus_Fail };
#define T_EndTest \
result.status = T_RunStatus_Pass; \
exit__:; \
scratch_end(scratch); \
return result; \
#define T_EndTest \
result_.status = T_RunStatus_Pass; \
exit__:; \
scratch_end(scratch); \
return result_; \
}
#define T_Ok(c) do { if (!(c)) { result.fail_file = __FILE__; result.fail_line = __LINE__; result.fail_cond = Stringify(c); goto exit__; } } while(0)
#define T_Ok(c) do { if (!(c)) { result_.fail_file = __FILE__; result_.fail_line = __LINE__; result_.fail_cond = Stringify(c); goto exit__; } } while(0)
#define T_MatchLinef(out, ...) T_Ok(t_match_linef(out, __VA_ARGS__))
////////////////////////////////
src/torture/torture_base.c
+73
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@@ -0,0 +1,73 @@
// Copyright (c) Epic Games Tools
// Licensed under the MIT license (https://opensource.org/license/mit/)
#define T_Group "Base"
T_BeginTest(str8_list_substr)
{
String8List zero_list = {0};
{
String8List list = {0};
str8_list_pushf(scratch.arena, &list, "a");
str8_list_pushf(scratch.arena, &list, "b");
str8_list_pushf(scratch.arena, &list, "c");
String8List sub = str8_list_substr(scratch.arena, list, r1u64(0, 3));
String8 result = str8_list_join(scratch.arena, &list, 0);
T_Ok(str8_match(result, str8_lit("abc"), 0));
}
{
String8List list = {0};
str8_list_pushf(scratch.arena, &list, "a");
str8_list_pushf(scratch.arena, &list, "b");
str8_list_pushf(scratch.arena, &list, "c");
String8List sub = str8_list_substr(scratch.arena, list, r1u64(0, max_U64));
String8 result = str8_list_join(scratch.arena, &list, 0);
T_Ok(str8_match(result, str8_lit("abc"), 0));
}
{
String8List list = {0};
str8_list_pushf(scratch.arena, &list, "a");
str8_list_pushf(scratch.arena, &list, "bcd");
String8List sub = str8_list_substr(scratch.arena, list, r1u64(2, 3));
String8 result = str8_list_join(scratch.arena, &sub, 0);
T_Ok(str8_match(result, str8_lit("c"), 0));
}
{
String8List list = {0};
str8_list_pushf(scratch.arena, &list, "a");
str8_list_pushf(scratch.arena, &list, "bcd");
String8List sub = str8_list_substr(scratch.arena, list, r1u64(1, 2));
String8 result = str8_list_join(scratch.arena, &sub, 0);
T_Ok(str8_match(result, str8_lit("b"), 0));
}
{
String8List list = {0};
str8_list_pushf(scratch.arena, &list, "ab");
str8_list_pushf(scratch.arena, &list, "cd");
str8_list_pushf(scratch.arena, &list, "ef");
String8List sub = str8_list_substr(scratch.arena, list, r1u64(1, 5));
String8 result = str8_list_join(scratch.arena, &sub, 0);
T_Ok(str8_match(result, str8_lit("bcde"), 0));
}
{
String8List list = {0};
str8_list_pushf(scratch.arena, &list, "abc");
String8List zero = str8_list_substr(scratch.arena, list, r1u64(0, 0));
T_Ok(MemoryMatchStruct(&zero, &zero_list));
String8List out_of_bounds_range = str8_list_substr(scratch.arena, list, r1u64(max_U64/2, max_U64));
T_Ok(MemoryMatchStruct(&out_of_bounds_range, &zero_list));
}
}
T_EndTest;
#undef T_Group
src/torture/torture_main.c
+1
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@@ -72,6 +72,7 @@
#include "linker/thread_pool/thread_pool.c"
#include "linker/codeview_ext/codeview.c"
#include "torture.c"
#include "torture_base.c"
#include "torture_radlink.c"
#include "torture_dwarf.c"
#include "torture_d2r.c"