Fix to support ARRAY<PROTO> (#239)

ast/ast.go

@@ -3447,7 +3447,7 @@ type ArraySchemaType struct {
 	Gt     token.Pos // position of ">"
 	Rparen token.Pos // position of ")" when len(NamedArgs) > 0
 
-	Item      SchemaType // ScalarSchemaType or SizedSchemaType
+	Item      SchemaType // ScalarSchemaType or SizedSchemaType or NamedType
 	NamedArgs []*NamedArg
 }
 

parser.go

@@ -4424,9 +4424,6 @@ func (p *Parser) tryParseTablePrivilegeColumns() ([]*ast.Ident, token.Pos) {
 func (p *Parser) parseSchemaType() ast.SchemaType {
 	switch p.Token.Kind {
 	case token.TokenIdent:
-		if !p.lookaheadSimpleType() {
-			return p.parseNamedType()
-		}
 		return p.parseScalarSchemaType()
 	case "ARRAY":
 		pos := p.expect("ARRAY").Pos
@@ -4574,7 +4571,12 @@ var sizedSchemaTypes = []string{
 	"BYTES",
 }
 
+// parseScalarSchemaType parses ScalarSchemaType, SizedSchemaType and NamedType, but not ArraySchemaType.
 func (p *Parser) parseScalarSchemaType() ast.SchemaType {
+	if !p.lookaheadSimpleType() {
+		return p.parseNamedType()
+	}
+
 	id := p.expect(token.TokenIdent)
 	pos := id.Pos
 

testdata/input/ddl/create_table_types.sql

@@ -1,16 +1,29 @@
+-- https://cloud.google.com/spanner/docs/reference/standard-sql/data-definition-language#data_types
 create table types (
   b bool,
   i int64,
   f32 float32,
   f float64,
-  d date,
-  t timestamp,
   s string(256),
+  sh string(0x100),
   smax string(max),
   bs bytes(256),
+  bh bytes(0x100),
   bsmax bytes(max),
+  j json,
+  d date,
+  t timestamp,
   ab array<bool>,
   abs array<bytes(max)>,
-  p examples.ProtoType,
   af32vl array<float32>(vector_length=>128),
+  p ProtoType,
+  p_quoted `ProtoType`,
+  p_path examples.ProtoType,
+  p_partly_quoted_path examples.shipping.`Order`,
+  p_fully_quoted_path `examples.shipping.Order`,
+  ap ARRAY<ProtoType>,
+  ap_quoted ARRAY<`ProtoType`>,
+  ap_path ARRAY<examples.ProtoType>,
+  ap_partly_quoted_path ARRAY<examples.shipping.`Order`>,
+  ap_fully_quoted_path ARRAY<`examples.shipping.Order`>,
 ) primary key (i)