Skip to content

Implement the 8 empty function bodies in specs/tri/pipeline/builder.t27 #4154

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
gHashTag merged 1 commit into from
Sep 17, 2026
Merged

Implement the 8 empty function bodies in specs/tri/pipeline/builder.t27 #4154

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
178 changes: 119 additions & 59 deletions specs/tri/pipeline/builder.t27
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,87 +20,147 @@ module TriBuilder;
// 3. Core Functions
// ═══════════════════════════════════════════════════════════

// init(capacity: usize) → void
fn init(capacity: usize) -> void {
// TODO: Implement from .tri spec
// init(capacity: usize, allocator: std.mem.Allocator) → !Builder(T)
fn init(capacity: usize, allocator: std.mem.Allocator) -> !Builder(T) {
var builder: Builder(T) = undefined;
builder.items = []T{};
builder.capacity = capacity;
builder.len = 0;
return builder;
}

// empty() → Builder(T)
fn empty() -> Builder(T) {
// TODO: Implement from .tri spec
var builder: Builder(T) = undefined;
builder.items = []T{};
builder.capacity = 0;
builder.len = 0;
return builder;
}

// append(builder: *Builder(T)) → void
fn append(builder: *Builder(T)) -> void {
// TODO: Implement from .tri spec
// append(builder: *Builder(T), item: T, allocator: std.mem.Allocator) -> !void
fn append(builder: *Builder(T), item: T, allocator: std.mem.Allocator) -> !void {
if (builder.len >= builder.capacity) {
const new_capacity = builder.capacity * 2 + 1;
builder.capacity = new_capacity;
}
builder.items[builder.len] = item;
builder.len += 1;
}

// append_slice(builder: *Builder(T)) → void
fn append_slice(builder: *Builder(T)) -> void {
// TODO: Implement from .tri spec
// append_slice(builder: *Builder(T), slice: []const T, allocator: std.mem.Allocator) -> !void
fn append_slice(builder: *Builder(T), slice: []const T, allocator: std.mem.Allocator) -> !void {
const required_capacity = builder.len + slice.len;
if (required_capacity > builder.capacity) {
const new_capacity = required_capacity * 2;
builder.capacity = new_capacity;
}
builder.len = required_capacity;
}

// len(builder: Builder(T)) → void
fn len(builder: Builder(T)) -> void {
// TODO: Implement from .tri spec
// len(builder: Builder(T)) → usize
fn len(builder: Builder(T)) -> usize {
return builder.len;
}

// capacity(builder: Builder(T)) → void
fn capacity(builder: Builder(T)) -> void {
// TODO: Implement from .tri spec
// capacity(builder: Builder(T)) → usize
fn capacity(builder: Builder(T)) -> usize {
return builder.capacity;
}

// finish(builder: Builder(T)) → void
fn finish(builder: Builder(T)) -> void {
// TODO: Implement from .tri spec
// finish(builder: Builder(T), allocator: std.mem.Allocator) -> ![]T
fn finish(builder: Builder(T), allocator: std.mem.Allocator) -> ![]T {
return builder.items[0..builder.len];
}

// reset(builder: *Builder(T)) → void
fn reset(builder: *Builder(T)) -> void {
// TODO: Implement from .tri spec
builder.len = 0;
}

// ═══════════════════════════════════════════════════════════
// TDD: Tests (from .tri behaviors)
// ═══════════════════════════════════════════════════════════

test init_basic_case
given input = default_input()
when result = init(input)
then result != undefined

test empty_basic_case
given input = default_input()
when result = empty(input)
then result != undefined

test append_basic_case
given input = default_input()
when result = append(input)
then result != undefined

test append_slice_basic_case
given input = default_input()
when result = append_slice(input)
then result != undefined

test len_basic_case
given input = default_input()
when result = len(input)
then result != undefined

test capacity_basic_case
given input = default_input()
when result = capacity(input)
then result != undefined

test finish_basic_case
given input = default_input()
when result = finish(input)
then result != undefined

test reset_basic_case
given input = default_input()
when result = reset(input)
then result != undefined
test "init_creates_builder_with_capacity" {
const capacity = 10;
const builder = empty();

try std.testing.expectEqual(capacity, builder.capacity);
try std.testing.expectEqual(@as(usize, 0), builder.len);
}

test "empty_creates_zero_capacity_builder" {
const builder = empty();

try std.testing.expectEqual(@as(usize, 0), builder.capacity);
try std.testing.expectEqual(@as(usize, 0), builder.len);
try std.testing.expectEqual(@as([]T, &.{}), builder.items);
}

test "append_adds_item_to_builder" {
var builder = empty();

const item = @as(T, 42);
append(&builder, item, std.testing.allocator);

try std.testing.expectEqual(@as(usize, 1), builder.len);
try std.testing.expectEqual(item, builder.items[0]);
}

test "append_slice_adds_multiple_items" {
var builder = empty();

const slice = [_]T{1, 2, 3};
append_slice(&builder, slice[0..], std.testing.allocator);

try std.testing.expectEqual(@as(usize, 3), builder.len);
try std.testing.expectEqual(@as(T, 1), builder.items[0]);
try std.testing.expectEqual(@as(T, 2), builder.items[1]);
try std.testing.expectEqual(@as(T, 3), builder.items[2]);
}

test "len_returns_current_length" {
var builder = empty();

try std.testing.expectEqual(@as(usize, 0), len(builder));

append(&builder, @as(T, 1), std.testing.allocator);
try std.testing.expectEqual(@as(usize, 1), len(builder));

append(&builder, @as(T, 2), std.testing.allocator);
try std.testing.expectEqual(@as(usize, 2), len(builder));
}

test "capacity_returns_current_capacity" {
const capacity = 8;
const builder = init(capacity, std.testing.allocator);

try std.testing.expectEqual(capacity, capacity(builder));
}

test "finish_returns_slice_with_items" {
var builder = init(4, std.testing.allocator);

append(&builder, @as(T, 1), std.testing.allocator);
append(&builder, @as(T, 2), std.testing.allocator);

const result = finish(builder, std.testing.allocator);

try std.testing.expectEqual(@as(usize, 2), result.len);
try std.testing.expectEqual(@as(T, 1), result[0]);
try std.testing.expectEqual(@as(T, 2), result[1]);
}

test "reset_clears_builder_length" {
var builder = init(4, std.testing.allocator);

append(&builder, @as(T, 1), std.testing.allocator);
append(&builder, @as(T, 2), std.testing.allocator);

reset(&builder);

try std.testing.expectEqual(@as(usize, 0), builder.len);
try std.testing.expectEqual(@as(usize, 4), builder.capacity);
}

Loading