[WIP] use the modern analyzer framework for safesql

.gitignore

@@ -0,0 +1,3 @@
+/safesql
+/.idea
+*~

cmd/safesql/main.go

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+// Command safesql is a tool for performing static analysis on programs to
+// ensure that SQL injection attacks are not possible. It does this by ensuring
+// package database/sql is only used with compile-time constant queries.
+package main
+
+import (
+	"github.com/bpowers/safesql"
+	"golang.org/x/tools/go/analysis/singlechecker"
+)
+
+func main() {
+	singlechecker.Main(safesql.Analyzer)
+}

go.mod

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+module github.com/bpowers/safesql
+
+go 1.13
+
+require golang.org/x/tools v0.0.0-20190909030654-5b82db07426d

go.sum

@@ -0,0 +1,8 @@
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20190909030654-5b82db07426d h1:PhtdWYteEBebOX7KXm4qkIAVSUTHQ883/2hRB92r9lk=
+golang.org/x/tools v0.0.0-20190909030654-5b82db07426d/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=