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zig fmt: correct Node.firstToken for .fn_decl, add error for missing container

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This commit is contained in:
Veikka Tuominen 2021-02-22 17:39:41 +02:00
parent 69d5a106da
commit 928790364a
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GPG Key ID: 59AEB8936E16A6AC
4 changed files with 99 additions and 74 deletions
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25
lib/std/zig/ast.zig
View File

@ -258,6 +258,11 @@ pub const Tree = struct {
token_tags[parse_error.token].symbol(),
});
},
.expected_container => {
return stream.print("expected a struct, enum or union, found '{s}'", .{
token_tags[parse_error.token].symbol(),
});
},
.extra_align_qualifier => {
return stream.writeAll("extra align qualifier");
},
@ -441,10 +446,27 @@ pub const Tree = struct {
.call,
.call_comma,
.switch_range,
.fn_decl,
.error_union,
=> n = datas[n].lhs,
.fn_decl => {
var i = main_tokens[n]; // fn token
while (i > 0) {
i -= 1;
switch (token_tags[i]) {
.keyword_extern,
.keyword_export,
.keyword_pub,
.keyword_threadlocal,
.string_literal,
=> continue,
else => return i + 1 - end_offset,
}
}
return i - end_offset;
},
.async_call_one,
.async_call_one_comma,
.async_call,
@ -2338,6 +2360,7 @@ pub const Error = struct {
expected_var_decl,
expected_var_decl_or_fn,
expected_loop_payload,
expected_container,
extra_align_qualifier,
extra_allowzero_qualifier,
extra_const_qualifier,

5
lib/std/zig/parse.zig
View File

@ -3627,7 +3627,10 @@ const Parser = struct {
break :blk null_node;
}
},
else => unreachable,
else => {
p.tok_i -= 1;
return p.fail(.expected_container);
},
};
_ = try p.expectToken(.l_brace);
const members = try p.parseContainerMembers();

141
lib/std/zig/parser_test.zig
View File

@ -2399,20 +2399,20 @@ test "zig fmt: comments before test decl" {
);
}
//test "zig fmt: preserve spacing" {
// try testCanonical(
// \\const std = @import("std");
// \\
// \\pub fn main() !void {
// \\ var stdout_file = std.io.getStdOut;
// \\ var stdout_file = std.io.getStdOut;
// \\
// \\ var stdout_file = std.io.getStdOut;
// \\ var stdout_file = std.io.getStdOut;
// \\}
// \\
// );
//}
test "zig fmt: preserve spacing" {
try testCanonical(
\\const std = @import("std");
\\
\\pub fn main() !void {
\\ var stdout_file = std.io.getStdOut;
\\ var stdout_file = std.io.getStdOut;
\\
\\ var stdout_file = std.io.getStdOut;
\\ var stdout_file = std.io.getStdOut;
\\}
\\
);
}
//test "zig fmt: return types" {
// try testCanonical(
@ -2431,27 +2431,27 @@ test "zig fmt: imports" {
);
}
//test "zig fmt: global declarations" {
// try testCanonical(
// \\const a = b;
// \\pub const a = b;
// \\var a = b;
// \\pub var a = b;
// \\const a: i32 = b;
// \\pub const a: i32 = b;
// \\var a: i32 = b;
// \\pub var a: i32 = b;
// \\extern const a: i32 = b;
// \\pub extern const a: i32 = b;
// \\extern var a: i32 = b;
// \\pub extern var a: i32 = b;
// \\extern "a" const a: i32 = b;
// \\pub extern "a" const a: i32 = b;
// \\extern "a" var a: i32 = b;
// \\pub extern "a" var a: i32 = b;
// \\
// );
//}
test "zig fmt: global declarations" {
try testCanonical(
\\const a = b;
\\pub const a = b;
\\var a = b;
\\pub var a = b;
\\const a: i32 = b;
\\pub const a: i32 = b;
\\var a: i32 = b;
\\pub var a: i32 = b;
\\extern const a: i32 = b;
\\pub extern const a: i32 = b;
\\extern var a: i32 = b;
\\pub extern var a: i32 = b;
\\extern "a" const a: i32 = b;
\\pub extern "a" const a: i32 = b;
\\extern "a" var a: i32 = b;
\\pub extern "a" var a: i32 = b;
\\
);
}
test "zig fmt: extern declaration" {
try testCanonical(
@ -2680,23 +2680,23 @@ test "zig fmt: functions" {
);
}
//test "zig fmt: multiline string" {
// try testCanonical(
// \\test "" {
// \\ const s1 =
// \\ \\one
// \\ \\two)
// \\ \\three
// \\ ;
// \\ const s3 = // hi
// \\ \\one
// \\ \\two)
// \\ \\three
// \\ ;
// \\}
// \\
// );
//}
test "zig fmt: multiline string" {
try testCanonical(
\\test "" {
\\ const s1 =
\\ \\one
\\ \\two)
\\ \\three
\\ ;
\\ const s3 = // hi
\\ \\one
\\ \\two)
\\ \\three
\\ ;
\\}
\\
);
}
test "zig fmt: values" {
try testCanonical(
@ -3578,15 +3578,14 @@ test "zig fmt: comment after empty comment" {
// );
//}
//test "zig fmt: extern without container keyword returns error" {
// try testError(
// \\const container = extern {};
// \\
// , &[_]Error{
// .expected_expr,
// .expected_var_decl_or_fn,
// });
//}
test "zig fmt: extern without container keyword returns error" {
try testError(
\\const container = extern {};
\\
, &[_]Error{
.expected_container,
});
}
test "zig fmt: same line doc comment returns error" {
try testError(
@ -3706,16 +3705,16 @@ test "zig fmt: C var args" {
// );
//}
//test "zig fmt: Don't add extra newline after if" {
// try testCanonical(
// \\pub fn atomicSymLink(allocator: *Allocator, existing_path: []const u8, new_path: []const u8) !void {
// \\ if (cwd().symLink(existing_path, new_path, .{})) {
// \\ return;
// \\ }
// \\}
// \\
// );
//}
test "zig fmt: Don't add extra newline after if" {
try testCanonical(
\\pub fn atomicSymLink(allocator: *Allocator, existing_path: []const u8, new_path: []const u8) !void {
\\ if (cwd().symLink(existing_path, new_path, .{})) {
\\ return;
\\ }
\\}
\\
);
}
//test "zig fmt: comments in ternary ifs" {
// try testCanonical(

2
lib/std/zig/render.zig
View File

@ -873,7 +873,7 @@ fn renderVarDecl(ais: *Ais, tree: ast.Tree, var_decl: ast.full.VarDecl) Error!vo
try renderToken(ais, tree, extern_export_token, Space.space); // extern
if (var_decl.lib_name) |lib_name| {
try renderExpression(ais, tree, lib_name, Space.space); // "lib"
try renderToken(ais, tree, lib_name, Space.space); // "lib"
}
}