zls/tests/utility/position_context.zig
Techatrix e28549fa7d
Completely overhaul offsets.zig (#643)
* completely overhaul offsets.zig
2022-09-16 00:33:49 +00:00

292 lines
6.7 KiB
Zig

const std = @import("std");
const zls = @import("zls");
const analysis = zls.analysis;
const types = zls.types;
const offsets = zls.offsets;
const allocator = std.testing.allocator;
test "position context - var access" {
try testContext(
\\const this_var = id<cursor>entifier;
,
.var_access,
"id",
);
try testContext(
\\const this_var = identifier<cursor>;
,
.var_access,
"identifier",
);
try testContext(
\\ fn foo() !Str<cursor> {
,
.var_access,
"Str",
);
// TODO fix failing test!
// try testContext(
// \\ fn foo() Err<cursor>!void {
// ,
// .var_access,
// "Err",
// );
}
test "position context - field access" {
try testContext(
\\if (foo.<cursor>field == foo) {
,
.field_access,
"foo.",
);
try testContext(
\\if (foo.member.<cursor>field == foo) {
,
.field_access,
"foo.member.",
);
try testContext(
\\if (foo.*.?.<cursor>field == foo) {
,
.field_access,
"foo.*.?.",
);
try testContext(
\\if (foo[0].<cursor>field == foo) {
,
.field_access,
"foo[0].",
);
try testContext(
\\if (foo.<cursor>@"field" == foo) {
,
.field_access,
"foo.",
);
try testContext(
\\const arr = std.ArrayList(SomeStruct(a, b, c, d)).in<cursor>it(allocator);
,
.field_access,
"std.ArrayList(SomeStruct(a, b, c, d)).in",
);
try testContext(
\\fn foo() !Foo.b<cursor> {
,
.field_access,
"Foo.b",
);
// TODO fix failing test!
// try testContext(
// \\fn foo() Foo.b<cursor>!void {
// ,
// .field_access,
// "Foo.b",
// );
}
test "position context - builtin" {
try testContext(
\\var foo = @intC<cursor>(u32, 5);
,
.builtin,
"@intC",
);
try testContext(
\\fn foo() void { @setRuntime<cursor>(false); };
,
.builtin,
"@setRuntime",
);
}
test "position context - comment" {
// TODO fix failing test!
// try testContext(
// \\// i am<cursor> a test
// ,
// .comment,
// "// i am",
// );
// try testContext(
// \\/// i am<cursor> a test
// ,
// .comment,
// "/// i am",
// );
}
test "position context - import/embedfile string literal" {
try testContext(
\\const std = @import("st<cursor>");
,
.import_string_literal,
"\"st", // maybe report just "st"
);
try testContext(
\\const std = @embedFile("file.<cursor>");
,
.embedfile_string_literal,
"\"file.", // maybe report just "file."
);
}
test "position context - string literal" {
try testContext(
\\var foo = "he<cursor>llo world!";
,
.string_literal,
"\"he", // maybe report just "he"
);
try testContext(
\\var foo = \\hello<cursor>;
,
.string_literal,
"\\\\hello", // maybe report just "hello"
);
}
test "position context - global error set" {
try testContext(
\\fn foo() error<cursor>!void {
,
.global_error_set,
null,
);
try testContext(
\\fn foo() error.<cursor>!void {
,
.global_error_set,
null,
);
// TODO this should probably also be .global_error_set
// try testContext(
// \\fn foo() error{<cursor>}!void {
// ,
// .global_error_set,
// null,
// );
// try testContext(
// \\fn foo() error{OutOfMemory, <cursor>}!void {
// ,
// .global_error_set,
// null,
// );
}
test "position context - enum literal" {
try testContext(
\\var foo = .tag<cursor>;
,
.enum_literal,
null,
);
try testContext(
\\var foo = .<cursor>;
,
.enum_literal,
null,
);
}
test "position context - label" {
try testContext(
\\var foo = blk: { break :blk<cursor> null };
,
.label,
null,
);
}
test "position context - empty" {
try testContext(
\\<cursor>
,
.empty,
null,
);
try testContext(
\\<cursor>const foo = struct {};
,
.empty,
null,
);
try testContext(
\\try foo(arg, slice[<cursor>]);
,
.empty,
null,
);
try testContext(
\\try foo(arg, slice[<cursor>..3]);
,
.empty,
null,
);
try testContext(
\\try foo(arg, slice[0..<cursor>]);
,
.empty,
null,
);
}
fn makeDocument(uri: []const u8, text: []const u8) !types.TextDocument {
const mem = try allocator.alloc(u8, text.len + 1);
std.mem.copy(u8, mem, text);
mem[text.len] = 0;
return types.TextDocument{
.uri = uri,
.mem = mem,
.text = mem[0..text.len :0],
};
}
fn freeDocument(doc: types.TextDocument) void {
allocator.free(doc.text);
}
fn testContext(comptime line: []const u8, comptime tag: std.meta.Tag(analysis.PositionContext), comptime maybe_range: ?[]const u8) !void {
const cursor_idx = comptime std.mem.indexOf(u8, line, "<cursor>").?;
const final_line = line[0..cursor_idx] ++ line[cursor_idx + "<cursor>".len ..];
const doc = try makeDocument("", line);
defer freeDocument(doc);
const ctx = try analysis.getPositionContext(allocator, doc, cursor_idx);
if (std.meta.activeTag(ctx) != tag) {
std.debug.print("Expected tag `{s}`, got `{s}`\n", .{ @tagName(tag), @tagName(std.meta.activeTag(ctx)) });
return error.DifferentTag;
}
const actual_loc = ctx.loc() orelse if(maybe_range) |expected_range| {
std.debug.print("Expected `{s}`, got null range\n", .{
expected_range,
});
return error.DifferentRange;
} else return;
const expected_range = maybe_range orelse {
std.debug.print("Expected null range, got `{s}`\n", .{
doc.text[actual_loc.start..actual_loc.end],
});
return error.DifferentRange;
};
const expected_range_start = comptime std.mem.indexOf(u8, final_line, expected_range).?;
const expected_range_end = expected_range_start + expected_range.len;
if (expected_range_start != actual_loc.start or expected_range_end != actual_loc.end) {
std.debug.print("Expected range `{s}` ({}..{}), got `{s}` ({}..{})\n", .{
doc.text[expected_range_start..expected_range_end], expected_range_start, expected_range_end,
doc.text[actual_loc.start..actual_loc.end], actual_loc.start, actual_loc.end,
});
return error.DifferentRange;
}
}