146 lines
2.9 KiB
Go
146 lines
2.9 KiB
Go
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// Copyright © 2016 Abcum Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package sql
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func (p *Parser) parseDefineFieldStatement(explain bool) (stmt *DefineFieldStatement, err error) {
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stmt = &DefineFieldStatement{}
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stmt.EX = explain
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stmt.KV = p.c.Get("KV").(string)
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stmt.NS = p.c.Get("NS").(string)
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stmt.DB = p.c.Get("DB").(string)
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if stmt.Name, err = p.parseIdent(); err != nil {
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return nil, err
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}
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if _, _, err = p.shouldBe(ON); err != nil {
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return nil, err
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}
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if stmt.What, err = p.parseTables(); err != nil {
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return nil, err
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}
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for {
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tok, _, exi := p.mightBe(MIN, MAX, TYPE, CODE, DEFAULT, NOTNULL, READONLY, MANDATORY)
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if !exi {
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break
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}
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if is(tok, MIN) {
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if stmt.Min, err = p.parseNumber(); err != nil {
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return nil, err
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}
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}
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if is(tok, MAX) {
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if stmt.Max, err = p.parseNumber(); err != nil {
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return nil, err
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}
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}
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if is(tok, TYPE) {
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if stmt.Type, err = p.parseType(); err != nil {
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return nil, err
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}
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}
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if is(tok, CODE) {
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if stmt.Code, err = p.parseCode(); err != nil {
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return nil, err
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}
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}
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if is(tok, DEFAULT) {
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if stmt.Default, err = p.parseDefault(); err != nil {
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return nil, err
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}
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}
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if is(tok, NOTNULL) {
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stmt.Notnull = true
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if tok, _, exi := p.mightBe(TRUE, FALSE); exi {
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if tok == FALSE {
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stmt.Notnull = false
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}
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}
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}
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if is(tok, READONLY) {
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stmt.Readonly = true
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if tok, _, exi := p.mightBe(TRUE, FALSE); exi {
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if tok == FALSE {
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stmt.Readonly = false
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}
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}
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}
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if is(tok, MANDATORY) {
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stmt.Mandatory = true
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if tok, _, exi := p.mightBe(TRUE, FALSE); exi {
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if tok == FALSE {
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stmt.Mandatory = false
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}
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}
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}
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}
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if stmt.Type == nil {
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return nil, &ParseError{Found: "", Expected: []string{"TYPE"}}
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}
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if _, _, err = p.shouldBe(EOF, SEMICOLON); err != nil {
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return nil, err
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}
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return
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}
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func (p *Parser) parseRemoveFieldStatement(explain bool) (stmt *RemoveFieldStatement, err error) {
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stmt = &RemoveFieldStatement{}
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stmt.EX = explain
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stmt.KV = p.c.Get("KV").(string)
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stmt.NS = p.c.Get("NS").(string)
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stmt.DB = p.c.Get("DB").(string)
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if stmt.Name, err = p.parseIdent(); err != nil {
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return nil, err
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}
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if _, _, err = p.shouldBe(ON); err != nil {
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return nil, err
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}
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if stmt.What, err = p.parseTables(); err != nil {
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return nil, err
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}
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if _, _, err = p.shouldBe(EOF, SEMICOLON); err != nil {
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return nil, err
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}
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return
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}
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