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string/char literal escaping in eval

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This commit is contained in:
Ryan Fleury
2024-08-20 14:57:23 -07:00
parent b5b6f61811
commit 156a94b286
4 changed files with 58 additions and 3 deletions
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src/eval/eval_core.c
+51
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@@ -20,6 +20,57 @@ e_hash_from_string(U64 seed, String8 string)
return result;
}
internal String8
e_raw_from_escaped_string(Arena *arena, String8 string)
{
Temp scratch = scratch_begin(&arena, 1);
String8List strs = {0};
U64 start = 0;
for(U64 idx = 0; idx <= string.size; idx += 1)
{
if(idx == string.size || string.str[idx] == '\\' || string.str[idx] == '\r')
{
String8 str = str8_substr(string, r1u64(start, idx));
if(str.size != 0)
{
str8_list_push(scratch.arena, &strs, str);
}
start = idx+1;
}
if(idx < string.size && string.str[idx] == '\\')
{
U8 next_char = string.str[idx+1];
U8 replace_byte = 0;
switch(next_char)
{
default:{}break;
case 'a': replace_byte = 0x07; break;
case 'b': replace_byte = 0x08; break;
case 'e': replace_byte = 0x1b; break;
case 'f': replace_byte = 0x0c; break;
case 'n': replace_byte = 0x0a; break;
case 'r': replace_byte = 0x0d; break;
case 't': replace_byte = 0x09; break;
case 'v': replace_byte = 0x0b; break;
case '\\':replace_byte = '\\'; break;
case '\'':replace_byte = '\''; break;
case '"': replace_byte = '"'; break;
case '?': replace_byte = '?'; break;
}
String8 replace_string = push_str8_copy(scratch.arena, str8(&replace_byte, 1));
str8_list_push(scratch.arena, &strs, replace_string);
if(replace_byte == '\\' || replace_byte == '"' || replace_byte == '\'')
{
idx += 1;
start += 1;
}
}
}
String8 result = str8_list_join(arena, &strs, 0);
scratch_end(scratch);
return result;
}
////////////////////////////////
//~ rjf: Message Functions