chore: import upstream snapshot with attribution

2026-07-13 12:32:25 +08:00
commit e014feafe1
2285 changed files with 1131979 additions and 0 deletions
@@ -0,0 +1,147 @@
+// Copyright 2024 Dolthub, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ast
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/cockroachdb/errors"
+	vitess "github.com/dolthub/vitess/go/vt/sqlparser"
+
+	"github.com/dolthub/doltgresql/core/procedures"
+	"github.com/dolthub/doltgresql/postgres/parser/parser"
+	"github.com/dolthub/doltgresql/postgres/parser/sem/tree"
+	"github.com/dolthub/doltgresql/server/auth"
+	pgnodes "github.com/dolthub/doltgresql/server/node"
+	"github.com/dolthub/doltgresql/server/plpgsql"
+)
+
+// nodeCreateProcedure handles *tree.CreateProcedure nodes.
+func nodeCreateProcedure(ctx *Context, node *tree.CreateProcedure) (vitess.Statement, error) {
+	options, err := validateRoutineOptions(ctx, node.Options)
+	if err != nil {
+		return nil, err
+	}
+	// Grab the general information that we'll need to create the procedure
+	tableName := node.Name.ToTableName()
+	params := make([]pgnodes.RoutineParam, len(node.Args))
+	var defaults []vitess.Expr
+	for i, arg := range node.Args {
+		// parameter name
+		params[i].Name = arg.Name.String()
+		// parameter type
+		_, params[i].Type, err = nodeResolvableTypeReference(ctx, arg.Type, false)
+		if err != nil {
+			return nil, err
+		}
+		// parameter mode
+		switch arg.Mode {
+		case tree.RoutineArgModeIn:
+			params[i].Mode = procedures.ParameterMode_IN
+		case tree.RoutineArgModeVariadic:
+			params[i].Mode = procedures.ParameterMode_VARIADIC
+		case tree.RoutineArgModeOut:
+			params[i].Mode = procedures.ParameterMode_OUT
+		case tree.RoutineArgModeInout:
+			params[i].Mode = procedures.ParameterMode_INOUT
+		default:
+			return nil, errors.Newf("unknown procedure argmode: `%v`", arg.Mode)
+		}
+		// parameter default
+		if arg.Default != nil {
+			params[i].HasDefault = true
+			d, err := nodeExpr(ctx, arg.Default)
+			if err != nil {
+				return nil, err
+			}
+			defaults = append(defaults, d)
+		}
+	}
+	// We only support PL/pgSQL, SQL and C for now, so we verify that here
+	var parsedBody []plpgsql.InterpreterOperation
+	var sqlDef string
+	var sqlDefParsedStmts []vitess.Statement
+	var extensionName, extensionSymbol string
+	if languageOption, ok := options[tree.OptionLanguage]; ok {
+		switch strings.ToLower(languageOption.Language) {
+		case "plpgsql":
+			// PL/pgSQL is different from standard Postgres SQL, so we have to use a special parser to handle it.
+			// This parser also requires the full `CREATE PROCEDURE` string, so we'll pass that.
+			parsedBody, err = plpgsql.Parse(ctx.originalQuery)
+			if err != nil {
+				return nil, err
+			}
+			// parse types
+			for i, op := range parsedBody {
+				switch op.OpCode {
+				case plpgsql.OpCode_Declare:
+					// ParseType uses casting to parse the given type, but
+					// some special types cannot be cast. Eg: `user_defined_table_type%ROWTYPE`
+					if declareTyp, err := parser.ParseType(op.PrimaryData); err == nil {
+						if _, dt, err := nodeResolvableTypeReference(ctx, declareTyp, false); err == nil && dt != nil {
+							dtName := dt.Name()
+							if dt.Schema() != "" {
+								dtName = fmt.Sprintf("%s.%s", dt.Schema(), dtName)
+							}
+							parsedBody[i].PrimaryData = dtName
+						}
+					}
+				}
+			}
+		case "sql":
+			as, ok := options[tree.OptionAs1]
+			if !ok {
+				return nil, errors.Errorf("CREATE PROCEDURE definition needed for LANGUAGE SQL")
+			}
+			sqlDef, sqlDefParsedStmts, err = handleLanguageSQLAs(as.Definition, params)
+			if err != nil {
+				return nil, err
+			}
+		case "c":
+			symbolOption, ok := options[tree.OptionAs2]
+			if !ok {
+				return nil, errors.Errorf("LANGUAGE C is only supported when providing both the module name and symbol")
+			}
+			extensionName = symbolOption.ObjFile
+			extensionSymbol = symbolOption.LinkSymbol
+		default:
+			return nil, errors.Errorf("CREATE PROCEDURE only supports PL/pgSQL, C and SQL for now; others are not yet supported")
+		}
+	} else {
+		return nil, errors.Errorf("CREATE PROCEDURE does not define an input language")
+	}
+	// Returns the stored procedure call with all options
+	return vitess.InjectedStatement{
+		Statement: pgnodes.NewCreateProcedure(
+			tableName.Table(),
+			tableName.Schema(),
+			node.Replace,
+			params,
+			ctx.originalQuery,
+			extensionName,
+			extensionSymbol,
+			parsedBody,
+			sqlDef,
+			sqlDefParsedStmts,
+		),
+		Auth: vitess.AuthInformation{
+			AuthType:    auth.AuthType_CREATE,
+			TargetType:  auth.AuthTargetType_SchemaIdentifiers,
+			TargetNames: []string{tableName.Catalog(), tableName.Schema()},
+		},
+		Children: defaults,
+	}, nil
+}