zls/tests/language_features/comptime_interpreter.zig
2023-01-04 11:12:29 +01:00

99 lines
3.2 KiB
Zig

const std = @import("std");
const zls = @import("zls");
const Ast = std.zig.Ast;
const ComptimeInterpreter = zls.ComptimeInterpreter;
const allocator: std.mem.Allocator = std.testing.allocator;
test "ComptimeInterpreter - basic test" {
var config = zls.Config{};
var doc_store = zls.DocumentStore{
.allocator = allocator,
.config = &config,
};
defer doc_store.deinit();
_ = try doc_store.openDocument("file:///file.zig",
\\pub fn ReturnMyType(comptime my_arg: bool) type {
\\ var abc = z: {break :z if (!my_arg) 123 else 0;};
\\ if (abc == 123) return u69;
\\ return u8;
\\}
);
var interpreter = ComptimeInterpreter{
.allocator = allocator,
.arena = std.heap.ArenaAllocator.init(allocator),
.document_store = &doc_store,
.uri = "file:///file.zig",
};
defer interpreter.deinit();
_ = try interpreter.interpret(0, 0, .{});
var bool_type = try interpreter.ip.get(allocator, .{ .simple = .bool });
var bool_true = try interpreter.ip.get(allocator, .{ .simple = .bool_true });
var bool_false = try interpreter.ip.get(allocator, .{ .simple = .bool_false });
var arg_false = ComptimeInterpreter.Value{
.interpreter = &interpreter,
.node_idx = std.math.maxInt(Ast.Node.Index),
.ty = bool_type,
.val = bool_false,
};
var arg_true = ComptimeInterpreter.Value{
.interpreter = &interpreter,
.node_idx = std.math.maxInt(Ast.Node.Index),
.ty = bool_type,
.val = bool_true,
};
const function_node: Ast.Node.Index = 4;
const call_with_false = try interpreter.call(0, function_node, &.{arg_false}, .{});
const call_with_true = try interpreter.call(0, function_node, &.{arg_true}, .{});
try std.testing.expectFmt("u69", "{any}", .{call_with_false.result.value.val.fmtValue(call_with_false.result.value.ty, &interpreter.ip)});
try std.testing.expectFmt("u8", "{any}", .{call_with_true.result.value.val.fmtValue(call_with_true.result.value.ty, &interpreter.ip)});
}
test "ComptimeInterpreter - struct" {
var config = zls.Config{};
var doc_store = zls.DocumentStore{
.allocator = allocator,
.config = &config,
};
defer doc_store.deinit();
_ = try doc_store.openDocument("file:///file.zig",
\\pub fn ReturnMyType() type {
\\ return struct {
\\ slay: bool,
\\ var abc = 123;
\\ };
\\}
);
var interpreter = ComptimeInterpreter{
.allocator = allocator,
.arena = std.heap.ArenaAllocator.init(allocator),
.document_store = &doc_store,
.uri = "file:///file.zig",
};
defer interpreter.deinit();
_ = try interpreter.interpret(0, 0, .{});
const function_node: Ast.Node.Index = 3;
const call_result = try interpreter.call(0, function_node, &.{}, .{});
const result_struct = interpreter.ip.indexToKey(call_result.result.value.val).struct_type;
try std.testing.expectEqual(@intCast(usize, 1), result_struct.fields.count());
try std.testing.expect(result_struct.fields.contains("slay"));
try std.testing.expectFmt("bool", "{}", .{result_struct.fields.get("slay").?.ty.fmtType(&interpreter.ip)});
}