build: add missing plpgsql build rules

The "Github CI"/ "Lint" target in TC was failing due to
missing plpgsql build rules. This commit should add the
rules.

Release note: None

Makefile

@@ -782,6 +782,9 @@ SQLPARSER_TARGETS = \
 	pkg/sql/lexbase/tokens.go \
 	pkg/sql/lexbase/keywords.go \
 	pkg/sql/lexbase/reserved_keywords.go \
+	pkg/sql/plpgsql/parser/plpgsql.go \
+	pkg/sql/plpgsql/parser/lexbase/tokens.go \
+	pkg/sql/plpgsql/parser/lexbase/keywords.go \
 	pkg/sql/scanner/token_names_test.go
 
 PROTOBUF_TARGETS := bin/.go_protobuf_sources bin/.gw_protobuf_sources
@@ -1507,6 +1510,32 @@ pkg/sql/parser/sql.go: pkg/sql/parser/gen/sql.go.tmp | bin/.bootstrap
 	mv -f $@.tmp $@
 	goimports -w $@
 
+.SECONDARY: pkg/sql/plpgsql/parser/gen/plpgsql.go.tmp
+pkg/sql/plpgsql/parser/gen/plpgsql.go.tmp: pkg/sql/plpgsql/parser/gen/plpgsql-gen.y bin/.bootstrap
+	set -euo pipefail; \
+	  ret=$$(cd pkg/sql/plpgsql/parser/gen && goyacc -p plpgsql -o plpgsql.go.tmp plpgsql-gen.y); \
+	  if expr "$$ret" : ".*conflicts" >/dev/null; then \
+	    echo "$$ret"; exit 1; \
+	  fi
+
+pkg/sql/plpgsql/parser/lexbase/tokens.go: pkg/sql/plpgsql/parser/gen/plpgsql.go.tmp
+	(echo "// Code generated by make. DO NOT EDIT."; \
+	 echo "// GENERATED FILE DO NOT EDIT"; \
+	 echo; \
+	 echo "package lexbase"; \
+	 echo; \
+	 grep '^const [A-Z][_A-Z0-9]* ' $^) > $@.tmp || rm $@.tmp
+	mv -f $@.tmp $@
+
+
+pkg/sql/plpgsql/parser/plpgsql.go: pkg/sql/plpgsql/parser/gen/plpgsql.go.tmp | bin/.bootstrap
+	(echo "// Code generated by goyacc. DO NOT EDIT."; \
+	 echo "// GENERATED FILE DO NOT EDIT"; \
+	 cat $^ | \
+	 sed -E 's/^const ([A-Z][_A-Z0-9]*) =.*$$/const \1 = lexbase.\1/g') > $@.tmp || rm $@.tmp
+	mv -f $@.tmp $@
+	goimports -w $@
+
 # This modifies the grammar to:
 # - improve the types used by the generated parser for non-terminals
 # - expand the help rules.
@@ -1546,6 +1575,25 @@ pkg/sql/lexbase/keywords.go: pkg/sql/parser/sql.y pkg/sql/lexbase/allkeywords/ma
 	mv -f $@.tmp $@
 	gofmt -s -w $@
 
+.SECONDARY: pkg/sql/plpgsql/parser/gen/plpgsql-gen.y
+pkg/sql/plpgsql/parser/gen/plpgsql-gen.y: pkg/sql/plpgsql/parser/plpgsql.y
+	mkdir -p pkg/sql/plpgsql/parser/gen
+	set -euo pipefail; \
+	awk '/func.*plpgsqlSymUnion/ {print $$(NF - 1)}' pkg/sql/plpgsql/parser/plpgsql.y | \
+	sed -e 's/[]\/$$*.^|[]/\\&/g' | \
+	sed -e "s/^/s_(type|token) <(/" | \
+	awk '{print $$0")>_\\1 <union> /* <\\2> */_"}' > pkg/sql/plpgsql/parser/gen/types_regex.tmp; \
+	sed -E -f pkg/sql/plpgsql/parser/gen/types_regex.tmp < pkg/sql/plpgsql/parser/plpgsql.y | \
+	sed -Ee 's,//.*$$,,g;s,/[*]([^*]|[*][^/])*[*]/, ,g;s/ +$$//g' > $@.tmp || rm $@.tmp
+	mv -f $@.tmp $@
+	rm pkg/sql/plpgsql/parser/gen/types_regex.tmp
+
+pkg/sql/plpgsql/parser/lexbase/keywords.go: pkg/sql/plpgsql/parser/plpgsql.y pkg/sql/lexbase/allkeywords/main.go | bin/.bootstrap
+	$(GO) run -tags all-keywords pkg/sql/lexbase/allkeywords/main.go < $< > $@.tmp || rm $@.tmp
+	mv -f $@.tmp $@
+	gofmt -s -w $@
+
+
 # This target will print unreserved_keywords which are not actually
 # used in the grammar.
 .PHONY: sqlparser-unused-unreserved-keywords
@@ -1720,7 +1768,7 @@ cleanshort:
 	-$(GO) clean $(GOFLAGS) -tags '$(TAGS)' -ldflags '$(LINKFLAGS)' -i github.com/cockroachdb/cockroach...
 	$(FIND_RELEVANT) -type f -name '*.test' -exec rm {} +
 	for f in cockroach*; do if [ -f "$$f" ]; then rm "$$f"; fi; done
-	rm -rf pkg/sql/parser/gen
+	rm -rf pkg/sql/parser/gen pkg/sql/plpgsql/parser/gen
 
 .PHONY: clean
 clean: ## Like cleanshort, but also includes C++ artifacts, Bazel artifacts, and the go build cache.

pkg/sql/plpgsql/parser/.gitignore

@@ -2,3 +2,5 @@
 # for reasoning and alternatives).
 
 plpgsql.go
+y.output
+gen

pkg/sql/plpgsql/parser/BUILD.bazel

@@ -42,11 +42,13 @@ go_library(
         "//pkg/sql/parser/statements",
         "//pkg/sql/pgwire/pgcode",
         "//pkg/sql/pgwire/pgerror",
+        "//pkg/sql/plpgsql/parser/lexbase",  # keep
         "//pkg/sql/scanner",
         "//pkg/sql/sem/plpgsqltree",
         "//pkg/sql/sem/tree",
         "//pkg/sql/types",
         "@com_github_cockroachdb_errors//:errors",
+        "@com_github_cockroachdb_redact//:redact",  # keep
     ],
 )
 

pkg/sql/plpgsql/parser/plpgsql.y

@@ -4,9 +4,11 @@ package parser
 import (
   "fmt"
 
+  "github.com/cockroachdb/cockroach/pkg/sql/plpgsql/parser/lexbase"
   "github.com/cockroachdb/cockroach/pkg/sql/scanner"
   "github.com/cockroachdb/cockroach/pkg/sql/sem/plpgsqltree"
   "github.com/cockroachdb/errors"
+  "github.com/cockroachdb/redact"
 )
 %}
 
@@ -688,7 +690,8 @@ getdiag_item: unreserved_keyword {
     case "returned_sqlstate":
       $$.val = plpgsqltree.PlpgsqlGetdiagReturnedSqlstate;
     default:
-      setErr(plpgsqllex, errors.New("unrecognized GET DIAGNOSTICS item " + $1 ))
+      // TODO(jane): Should this use an unimplemented error instead?
+      setErr(plpgsqllex, errors.Newf("unrecognized GET DIAGNOSTICS item: %s", redact.Safe($1)))
   }
 }
 ;