build: add vet-check

Makefile

@@ -163,9 +163,15 @@ goimports-check:
 	fi
 .PHONY: goimports-check
 
+vet-check:
+	./scripts/vet.sh gen
+	./scripts/vet.sh chk
+.PHONY: vet-check
+
 check: fmt-check
 check: gendocgo-check
 check: goimports-check
+check: vet-check
 .PHONY: check
 
 

scripts/vet.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+
+o=_output/_vet/
+ALL="$o/vet.txt"
+
+
+typi() {
+	local typ="$1"
+	local fna="$o/vet_$(echo "$typ" | sed -r -e "s/[^a-zA-Z0-9]+/_/g").txt"
+
+	grep -F    "$typ" "$UNKNOWN" >"$fna"
+	grep -F -v "$typ" "$UNKNOWN" >""$INTERMEDIATE""
+	cp "$INTERMEDIATE" "$UNKNOWN"
+
+	rm -f "$INTERMEDIATE"
+	if [ ! -s "$fna" ]; then
+		rm -f "$fna"
+	fi
+}
+
+typ() {
+	local UNKNOWN=$o/vet0.txt
+	local INTERMEDIATE=$o/vet1.txt
+
+	cp "$ALL" "$UNKNOWN"
+	typi "unreachable code"
+	typi "composite literal uses unkeyed fields"
+	typi "repeats json tag"
+	typi "bad syntax for struct tag key"
+	typi "bad syntax for struct tag value"
+	typi "pairs not separated by spaces"
+	typi "bad syntax for struct tag pair"
+}
+
+gen() {
+	rm -rf "$o"
+	mkdir -p "$o"
+	go vet ./... 2>"$ALL"
+
+	typ
+	ls -l $o/
+}
+
+chki() {
+	local typ="$1"
+
+	if grep -F "$typ" "$ALL"; then
+		exit 1
+	fi
+}
+
+chk() {
+	chki "unreachable code"
+	chki "composite literal uses unkeyed fields"
+	: chki "repeats json tag"
+	: chki "bad syntax for struct tag key"
+	chki "bad syntax for struct tag value"
+	chki "pairs not separated by spaces"
+	chki "bad syntax for struct tag pair"
+}
+
+"$@"