SemverQuery(
id: "function_like_proc_macro_missing",
human_readable_name: "function-like proc macro removed",
description: "A function-like procedural macro that previously existed has been removed.",
required_update: Major,
lint_level: Deny,
reference_link: Some("https://doc.rust-lang.org/reference/procedural-macros.html#function-like-procedural-macros"),
query: r#"
{
CrateDiff {
baseline {
item {
... on FunctionLikeProcMacro {
macro_name: name @output
visibility_limit @filter(op: "=", value: ["$public"])
importable_path {
path @output @tag
public_api @filter(op: "=", value: ["$true"])
}
# Get span info from the baseline for error reporting
span_: span @optional {
filename @output
begin_line @output
end_line @output
}
}
}
}
current @fold @transform(op: "count") @filter(op: "=", value: ["$zero"]) {
item {
... on FunctionLikeProcMacro {
importable_path {
path @filter(op: "=", value: ["%path"])
}
}
}
}
}
}"#,
arguments: {
"public": "public",
"zero": 0,
"true": true,
},
error_message: "A function-like procedural macro has been removed. Any code that invokes this macro will fail to compile.",
per_result_error_template: Some("macro {{macro_name}} in file {{span_filename}}:{{span_begin_line}}"),
witness: None,
)