dolphin: Implement named parameters via sqlc.arg() (#632)

* parser: Update to latest version of forked parser

* endtoend: Add sqlc_arg test case

* internal: Implement named arguments for MySQL

* cleanup

Author: kyleconroy

go.mod

@@ -16,4 +16,4 @@ require (
 	vitess.io/vitess v0.0.0-20200617014457-5ba6549015c0
 )
 
-replace github.com/pingcap/parser => github.com/kyleconroy/parser v0.0.0-20200727200926-0e04da0a60a6
+replace github.com/pingcap/parser => github.com/kyleconroy/parser v0.0.0-20200728181224-b006e3bf3ed9

go.sum

@@ -311,8 +311,8 @@ github.com/kr/pty v1.1.5/go.mod h1:9r2w37qlBe7rQ6e1fg1S/9xpWHSnaqNdHD3WcMdbPDA=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/krishicks/yaml-patch v0.0.10/go.mod h1:Sm5TchwZS6sm7RJoyg87tzxm2ZcKzdRE4Q7TjNhPrME=
-github.com/kyleconroy/parser v0.0.0-20200727200926-0e04da0a60a6 h1:fryw+mWaV81slq8BqQFia2hlVt1HA4v+8d0UM7VOe7E=
-github.com/kyleconroy/parser v0.0.0-20200727200926-0e04da0a60a6/go.mod h1:vQdbJqobJAgFyiRNNtXahpMoGWwPEuWciVEK5A20NS0=
+github.com/kyleconroy/parser v0.0.0-20200728181224-b006e3bf3ed9 h1:rSPG/3/wBoiniDxYd/BsAy+mLIi0MVfZMhXJr7TKVPA=
+github.com/kyleconroy/parser v0.0.0-20200728181224-b006e3bf3ed9/go.mod h1:vQdbJqobJAgFyiRNNtXahpMoGWwPEuWciVEK5A20NS0=
 github.com/lfittl/pg_query_go v1.0.0 h1:rcHZK5DBEUoxtO6dACP+UVCHKtA1ZsELBW0rSjOXMAE=
 github.com/lfittl/pg_query_go v1.0.0/go.mod h1:jcikG62RKf+NIWmbLzjjk73m4x6um2pKf3h+TJyINms=
 github.com/lib/pq v1.4.0 h1:TmtCFbH+Aw0AixwyttznSMQDgbR5Yed/Gg6S8Funrhc=

internal/compiler/parse.go

@@ -76,7 +76,7 @@ func (c *Compiler) parseQuery(stmt ast.Node, src string, o opts.Parser) (*Query,
 		return nil, err
 	}
 
-	raw, namedParams, edits := rewrite.NamedParameters(raw)
+	raw, namedParams, edits := rewrite.NamedParameters(c.conf.Engine, raw)
 	rvs := rangeVars(raw.Stmt)
 	refs := findParameters(raw.Stmt)
 	if o.UsePositionalParameters {

internal/debug/dump.go

@@ -12,7 +12,7 @@ func init() {
 	Active = os.Getenv("SQLCDEBUG") != ""
 }
 
-func Dump(n interface{}) {
+func Dump(n ...interface{}) {
 	if Active {
 		spew.Dump(n)
 	}

internal/endtoend/testdata/sqlc_arg/mysql/go/db.go

@@ -0,0 +1,7 @@
+CREATE TABLE foo (name text not null);
+
+/* name: FuncParamIdent :many */
+SELECT name FROM foo WHERE name = sqlc.arg(slug);
+
+/* name: FuncParamString :many */
+SELECT name FROM foo WHERE name = sqlc.arg('slug');

internal/endtoend/testdata/sqlc_arg/mysql/go/models.go

@@ -0,0 +1,12 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "engine": "_dolphin",
+      "path": "go",
+      "name": "querytest",
+      "schema": "query.sql",
+      "queries": "query.sql"
+    }
+  ]
+}