language-servers/roc
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Merge remote-tracking branch 'origin/trunk' into wasm-cli-option

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Folkert 2021-08-24 17:02:05 +02:00
commit 13df4ee656
6 changed files with 38 additions and 61 deletions
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35
compiler/builtins/bitcode/src/str.zig
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@ -1,5 +1,4 @@
const utils = @import("utils.zig");
const roc_mem = @import("mem.zig");
const RocList = @import("list.zig").RocList;
const std = @import("std");
const mem = std.mem;
@ -10,7 +9,7 @@ const expectEqual = testing.expectEqual;
const expectError = testing.expectError;
const expect = testing.expect;
const InPlace = packed enum(u8) {
const InPlace = enum(u8) {
InPlace,
Clone,
};
@ -52,7 +51,7 @@ pub const RocStr = extern struct {
return result;
}
pub fn initBig(in_place: InPlace, number_of_chars: usize) RocStr {
pub fn initBig(_: InPlace, number_of_chars: usize) RocStr {
const first_element = utils.allocateWithRefcount(number_of_chars, @sizeOf(usize));
return RocStr{
@ -222,7 +221,7 @@ pub const RocStr = extern struct {
// null-terminated strings. Otherwise, we need to allocate and copy a new
// null-terminated string, which has a much higher performance cost!
fn isNullTerminated(self: RocStr) bool {
const len = self.len();
const length = self.len();
const longest_small_str = @sizeOf(RocStr) - 1;
// NOTE: We want to compare length here, *NOT* check for is_small_str!
@ -231,7 +230,7 @@ pub const RocStr = extern struct {
//
// (The other branch dereferences the bytes pointer, which is not safe
// to do for the empty string.)
if (len <= longest_small_str) {
if (length <= longest_small_str) {
// If we're a small string, then usually the next byte after the
// end of the string will be zero. (Small strings set all their
// unused bytes to 0, so that comparison for equality can be fast.)
@ -242,7 +241,7 @@ pub const RocStr = extern struct {
// Also, if we are exactly a maximum-length small string,
// then the next byte is off the end of the struct;
// in that case, we are also not null-terminated!
return len != 0 and len != longest_small_str;
return length != 0 and length != longest_small_str;
} else {
// This is a big string, and it's not empty, so we can safely
// dereference the pointer.
@ -253,8 +252,8 @@ pub const RocStr = extern struct {
//
// If we have excess capacity, then we can safely read the next
// byte after the end of the string. Maybe it happens to be zero!
if (capacity_or_refcount > @intCast(isize, len)) {
return self.str_bytes[len] == 0;
if (capacity_or_refcount > @intCast(isize, length)) {
return self.str_bytes[length] == 0;
} else {
// This string was refcounted or immortal; we can't safely read
// the next byte, so assume the string is not null-terminated.
@ -267,10 +266,10 @@ pub const RocStr = extern struct {
// Returns 0 for refcounted stirngs and immortal strings.
// Returns the stored capacity value for all other strings.
pub fn capacity(self: RocStr) usize {
const len = self.len();
const length = self.len();
const longest_small_str = @sizeOf(RocStr) - 1;
if (len <= longest_small_str) {
if (length <= longest_small_str) {
// Note that although empty strings technically have the full
// capacity of a small string available, they aren't marked as small
// strings, so if you want to make use of that capacity, you need
@ -316,7 +315,14 @@ pub const RocStr = extern struct {
pub fn asU8ptr(self: RocStr) [*]u8 {
// Since this conditional would be prone to branch misprediction,
// make sure it will compile to a cmov.
return if (self.isSmallStr() or self.isEmpty()) (&@bitCast([@sizeOf(RocStr)]u8, self)) else (@ptrCast([*]u8, self.str_bytes));
// return if (self.isSmallStr() or self.isEmpty()) (&@bitCast([@sizeOf(RocStr)]u8, self)) else (@ptrCast([*]u8, self.str_bytes));
if (self.isSmallStr() or self.isEmpty()) {
const as_int = @ptrToInt(&self);
const as_ptr = @intToPtr([*]u8, as_int);
return as_ptr;
} else {
return @ptrCast([*]u8, self.str_bytes);
}
}
// Given a pointer to some bytes, write the first (len) bytes of this
@ -408,7 +414,7 @@ pub fn strFromIntC(int: i64) callconv(.C) RocStr {
fn strFromIntHelp(comptime T: type, int: T) RocStr {
// determine maximum size for this T
comptime const size = comptime blk: {
const size = comptime blk: {
// the string representation of the minimum i128 value uses at most 40 characters
var buf: [40]u8 = undefined;
var result = std.fmt.bufPrint(&buf, "{}", .{std.math.minInt(T)}) catch unreachable;
@ -787,8 +793,6 @@ pub fn countGraphemeClusters(string: RocStr) callconv(.C) usize {
return count;
}
fn rocStrFromLiteral(bytes_arr: *const []u8) RocStr {}
test "countGraphemeClusters: empty string" {
const count = countGraphemeClusters(RocStr.empty());
try expectEqual(count, 0);
@ -869,7 +873,6 @@ pub fn startsWith(string: RocStr, prefix: RocStr) callconv(.C) bool {
// Str.startsWithCodePt
pub fn startsWithCodePt(string: RocStr, prefix: u32) callconv(.C) bool {
const bytes_len = string.len();
const bytes_ptr = string.asU8ptr();
var buffer: [4]u8 = undefined;
@ -1268,7 +1271,7 @@ pub fn numberOfNextCodepointBytes(ptr: [*]u8, len: usize, index: usize) Utf8Deco
// Return types for validateUtf8Bytes
// Values must be in alphabetical order. That is, lowest values are the first alphabetically.
pub const Utf8ByteProblem = packed enum(u8) {
pub const Utf8ByteProblem = enum(u8) {
CodepointTooLarge = 0,
EncodesSurrogateHalf = 1,
ExpectedContinuation = 2,