369 lines
12 KiB
Zig
369 lines
12 KiB
Zig
const std = @import("std");
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const zls = @import("zls");
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const builtin = @import("builtin");
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const Ast = std.zig.Ast;
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const ComptimeInterpreter = zls.ComptimeInterpreter;
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const InternPool = zls.InternPool;
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const Index = InternPool.Index;
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const Key = InternPool.Key;
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const ast = zls.ast;
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const offsets = zls.offsets;
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const allocator: std.mem.Allocator = std.testing.allocator;
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test "ComptimeInterpreter - primitive types" {
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try testExprCheck("true", .{ .simple = .bool }, .{ .simple = .bool_true });
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try testExprCheck("false", .{ .simple = .bool }, .{ .simple = .bool_false });
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try testExprCheck("5", .{ .simple = .comptime_int }, .{ .int_u64_value = 5 });
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// TODO try testExprCheck("-2", .{ .simple = .comptime_int }, .{ .int_i64_value = -2 });
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try testExprCheck("3.0", .{ .simple = .comptime_float }, null);
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try testExprCheck("null", .{ .simple = .null_type }, .{ .simple = .null_value });
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try testExprCheck("void", .{ .simple = .type }, .{ .simple = .void });
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try testExprCheck("undefined", .{ .simple = .undefined_type }, .{ .simple = .undefined_value });
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try testExprCheck("noreturn", .{ .simple = .type }, .{ .simple = .noreturn });
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}
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test "ComptimeInterpreter - expressions" {
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if (true) return error.SkipZigTest; // TODO
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try testExprCheck("5 + 3", .{ .simple = .comptime_int }, .{ .int_u64_value = 8 });
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try testExprCheck("5.2 + 4.2", .{ .simple = .comptime_float }, null);
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try testExprCheck("3 == 3", .{ .simple = .bool }, .{ .simple = .bool_true });
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try testExprCheck("5.2 == 2.1", .{ .simple = .bool }, .{ .simple = .bool_false });
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try testExprCheck("@as(?bool, null) orelse true", .{ .simple = .bool }, .{ .simple = .bool_true });
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}
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test "ComptimeInterpreter - builtins" {
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if (true) return error.SkipZigTest; // TODO
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try testExprCheck("@as(bool, true)", .{ .simple = .bool }, .{ .simple = .bool_true });
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try testExprCheck("@as(u32, 3)", .{ .int_type = .{
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.signedness = .unsigned,
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.bits = 32,
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} }, .{ .int_u64_value = 3 });
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}
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test "ComptimeInterpreter - string literal" {
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if (true) return error.SkipZigTest; // TODO
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const source =
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\\const foobarbaz = "hello world!";
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\\
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;
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var result = try testInterpret(source, 1);
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defer result.deinit();
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try std.testing.expect(result.ty == .pointer_type);
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try std.testing.expect(result.val == .bytes);
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try std.testing.expectEqualStrings("hello world!", result.val.bytes);
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}
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test "ComptimeInterpreter - labeled block" {
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try testExprCheck(
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\\blk: {
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\\ break :blk true;
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\\}
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, .{ .simple = .bool }, .{ .simple = .bool_true });
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}
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test "ComptimeInterpreter - if" {
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try testExprCheck(
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\\blk: {
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\\ break :blk if (true) true else false;
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\\}
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, .{ .simple = .bool }, .{ .simple = .bool_true });
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try testExprCheck(
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\\blk: {
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\\ break :blk if (false) true else false;
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\\}
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, .{ .simple = .bool }, .{ .simple = .bool_false });
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}
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test "ComptimeInterpreter - field access" {
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if (true) return error.SkipZigTest; // TODO
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try testExprCheck(
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\\blk: {
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\\ const foo = struct {alpha: u32, beta: bool} = undefined;
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\\ break :blk foo.beta;
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\\}
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, .{ .simple = .bool }, null);
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}
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test "ComptimeInterpreter - pointer operations" {
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if (true) return error.SkipZigTest; // TODO
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try testExprCheck(
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\\blk: {
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\\ const foo: []const u8 = "";
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\\ break :blk foo.len;
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\\}
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, .{ .simple = .usize }, .{ .bytes = "" });
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try testExprCheck(
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\\blk: {
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\\ const foo = true;
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\\ break :blk &foo;
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\\}
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, @panic("TODO"), .{ .simple = .bool_true });
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try testExprCheck(
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\\blk: {
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\\ const foo = true;
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\\ const bar = &foo;
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\\ break :blk bar.*;
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\\}
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, @panic("TODO"), .{ .simple = .bool_true });
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}
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test "ComptimeInterpreter - call return primitive type" {
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try testCallCheck(
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\\pub fn Foo() type {
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\\ return bool;
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\\}
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, &.{}, .{ .simple = .bool });
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try testCallCheck(
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\\pub fn Foo() type {
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\\ return u32;
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\\}
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, &.{}, .{ .int_type = .{ .signedness = .unsigned, .bits = 32 } });
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try testCallCheck(
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\\pub fn Foo() type {
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\\ return i128;
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\\}
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, &.{}, .{ .int_type = .{ .signedness = .signed, .bits = 128 } });
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try testCallCheck(
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\\pub fn Foo() type {
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\\ const alpha = i128;
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\\ return alpha;
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\\}
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, &.{}, .{ .int_type = .{ .signedness = .signed, .bits = 128 } });
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}
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test "ComptimeInterpreter - call return struct" {
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var result = try testCall(
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\\pub fn Foo() type {
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\\ return struct {
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\\ slay: bool,
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\\ var abc = 123;
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\\ };
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\\}
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, &.{});
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defer result.deinit();
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try std.testing.expect(result.ty == .simple);
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try std.testing.expect(result.ty.simple == .type);
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const struct_info = result.val.struct_type;
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try std.testing.expectEqual(Index.none, struct_info.backing_int_ty);
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try std.testing.expectEqual(std.builtin.Type.ContainerLayout.Auto, struct_info.layout);
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try std.testing.expectEqual(@as(usize, 1), struct_info.fields.len);
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// try std.testing.expectEqualStrings("slay", struct_info.fields[0].name);
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// try std.testing.expect(struct_info.fields[0].ty != .none); // TODO check for bool
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}
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test "ComptimeInterpreter - call comptime argument" {
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const source =
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\\pub fn Foo(comptime my_arg: bool) type {
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\\ var abc = z: {break :z if (!my_arg) 123 else 0;};
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\\ if (abc == 123) return u69;
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\\ return u8;
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\\}
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;
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var result1 = try testCall(source, &.{
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Value{
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.ty = .{ .simple = .bool },
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.val = .{ .simple = .bool_true },
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},
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});
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defer result1.deinit();
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try std.testing.expect(result1.ty == .simple);
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try std.testing.expect(result1.ty.simple == .type);
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try std.testing.expectEqual(Key{ .int_type = .{ .signedness = .unsigned, .bits = 8 } }, result1.val);
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var result2 = try testCall(source, &.{
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Value{
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.ty = .{ .simple = .bool },
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.val = .{ .simple = .bool_false },
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},
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});
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defer result2.deinit();
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try std.testing.expect(result2.ty == .simple);
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try std.testing.expect(result2.ty.simple == .type);
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try std.testing.expectEqual(Key{ .int_type = .{ .signedness = .unsigned, .bits = 69 } }, result2.val);
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}
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//
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// Helper functions
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//
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const Result = struct {
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interpreter: ComptimeInterpreter,
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ty: Key,
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val: Key,
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pub fn deinit(self: *Result) void {
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self.interpreter.deinit();
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}
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};
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const Value = struct {
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ty: Key,
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val: Key,
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};
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fn testCall(source: []const u8, arguments: []const Value) !Result {
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var config = zls.Config{};
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var doc_store = zls.DocumentStore{
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.allocator = allocator,
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.config = &config,
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};
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defer doc_store.deinit();
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const test_uri: []const u8 = switch (builtin.os.tag) {
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.windows => "file:///C:\\test.zig",
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else => "file:///test.zig",
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};
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const handle = try doc_store.openDocument(test_uri, source);
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var interpreter = ComptimeInterpreter{
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.allocator = allocator,
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.document_store = &doc_store,
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.uri = handle.uri,
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};
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errdefer interpreter.deinit();
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_ = try interpretReportErrors(&interpreter, 0, .none);
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var args = try allocator.alloc(ComptimeInterpreter.Value, arguments.len);
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defer allocator.free(args);
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for (arguments) |argument, i| {
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args[i] = .{
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.interpreter = &interpreter,
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.node_idx = 0,
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.ty = try interpreter.ip.get(interpreter.allocator, argument.ty),
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.val = try interpreter.ip.get(interpreter.allocator, argument.val),
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};
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}
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const func_node = for (handle.tree.nodes.items(.tag)) |tag, i| {
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if (tag == .fn_decl) break @intCast(Ast.Node.Index, i);
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} else unreachable;
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const call_result = try interpreter.call(.none, func_node, args, .{});
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return Result{
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.interpreter = interpreter,
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.ty = interpreter.ip.indexToKey(call_result.result.value.ty),
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.val = interpreter.ip.indexToKey(call_result.result.value.val),
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};
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}
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fn testCallCheck(
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source: []const u8,
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arguments: []const Value,
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expected_ty: Key,
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) !void {
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var result = try testCall(source, arguments);
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defer result.deinit();
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try std.testing.expect(result.ty == .simple);
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try std.testing.expect(result.ty.simple == .type);
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if (!expected_ty.eql(result.val)) {
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std.debug.print("expected type `{}`, found `{}`\n", .{ expected_ty.fmtType(result.interpreter.ip), result.val.fmtType(result.interpreter.ip) });
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return error.TestExpectedEqual;
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}
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}
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fn testInterpret(source: []const u8, node_idx: Ast.Node.Index) !Result {
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var config = zls.Config{};
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var doc_store = zls.DocumentStore{
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.allocator = allocator,
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.config = &config,
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};
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defer doc_store.deinit();
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const test_uri: []const u8 = switch (builtin.os.tag) {
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.windows => "file:///C:\\test.zig",
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else => "file:///test.zig",
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};
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const handle = try doc_store.openDocument(test_uri, source);
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var interpreter = ComptimeInterpreter{
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.allocator = allocator,
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.document_store = &doc_store,
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.uri = handle.uri,
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};
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errdefer interpreter.deinit();
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_ = try interpretReportErrors(&interpreter, 0, .none);
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const result = try interpreter.interpret(node_idx, .none, .{});
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try std.testing.expect(result.value.ty != .none);
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try std.testing.expect(result.value.val != .none);
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return Result{
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.interpreter = interpreter,
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.ty = interpreter.ip.indexToKey(result.value.ty),
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.val = interpreter.ip.indexToKey(result.value.val),
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};
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}
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fn testExprCheck(
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expr: []const u8,
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expected_ty: Key,
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expected_val: ?Key,
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) !void {
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const source = try std.fmt.allocPrint(allocator,
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\\const foobarbaz = {s};
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, .{expr});
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defer allocator.free(source);
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var result = try testInterpret(source, 1);
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defer result.deinit();
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var ip: *InternPool = &result.interpreter.ip;
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if (!expected_ty.eql(result.ty)) {
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std.debug.print("expected type `{}`, found `{}`\n", .{ expected_ty.fmtType(ip.*), result.ty.fmtType(ip.*) });
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return error.TestExpectedEqual;
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}
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if (expected_val) |expected_value| {
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if (!expected_value.eql(result.val)) {
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const expected_ty_index = try ip.get(allocator, expected_ty);
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const actual_ty_index = try ip.get(allocator, result.ty);
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std.debug.print("expected value `{}`, found `{}`\n", .{
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expected_value.fmtValue(expected_ty_index, ip.*),
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result.val.fmtValue(actual_ty_index, ip.*),
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});
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return error.TestExpectedEqual;
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}
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}
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}
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fn interpretReportErrors(
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interpreter: *ComptimeInterpreter,
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node_idx: Ast.Node.Index,
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namespace: InternPool.NamespaceIndex,
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) !ComptimeInterpreter.InterpretResult {
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const result = interpreter.interpret(node_idx, namespace, .{});
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// TODO use ErrorBuilder
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var err_it = interpreter.errors.iterator();
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if (interpreter.errors.count() != 0) {
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const handle = interpreter.getHandle();
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std.debug.print("\n{s}\n", .{handle.text});
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while (err_it.next()) |entry| {
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const token = handle.tree.firstToken(entry.key_ptr.*);
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const position = offsets.tokenToPosition(handle.tree, token, .@"utf-8");
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std.debug.print("{d}:{d}: {s}\n", .{ position.line, position.character, entry.value_ptr.message });
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}
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}
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return result;
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}
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