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Fix and document

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This commit is contained in:
xackus 2019-11-10 22:26:42 +01:00
parent 6d0cdf7cd7
commit f6d124418f
1 changed files with 4 additions and 2 deletions
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6
lib/std/json.zig
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@ -1270,6 +1270,8 @@ pub const Parser = struct {
} }
}; };
/// Unescape a JSON string
/// Optimized for arena allocators, uses Allocator.shrink
pub fn unescapeStringAlloc(alloc: *Allocator, input: []const u8) ![]u8 { pub fn unescapeStringAlloc(alloc: *Allocator, input: []const u8) ![]u8 {
var output = try alloc.alloc(u8, input.len); var output = try alloc.alloc(u8, input.len);
errdefer alloc.free(output); errdefer alloc.free(output);
@ -1293,7 +1295,7 @@ pub fn unescapeStringAlloc(alloc: *Allocator, input: []const u8) ![]u8 {
'f' => 12, 'f' => 12,
'b' => 8, 'b' => 8,
'"' => '"', '"' => '"',
else => return error.InvalidEscapeCharacter; else => return error.InvalidEscapeCharacter
} }
); );
inIndex += 2; inIndex += 2;
@ -1306,7 +1308,7 @@ pub fn unescapeStringAlloc(alloc: *Allocator, input: []const u8) ![]u8 {
} }
} }
return try alloc.realloc(unescaped, outIndex); return alloc.shrink(output, outIndex);
} }
test "json.parser.dynamic" { test "json.parser.dynamic" {