112 lines
2 KiB
Go
112 lines
2 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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import (
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"encoding/json"
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"strconv"
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"time"
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)
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func in(token Token, tokens []Token) bool {
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for _, t := range tokens {
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if token == t {
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return true
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}
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}
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return false
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}
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func is(token Token, tokens ...Token) bool {
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for _, t := range tokens {
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if token == t {
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return true
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}
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}
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return false
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}
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func declare(tok Token, lit string) Expr {
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switch tok {
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case NULL:
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return &Null{}
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case ALL:
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return &Wildcard{}
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case ASC:
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return &DirectionLiteral{Val: true}
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case DESC:
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return &DirectionLiteral{Val: false}
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case IDENT:
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return &IdentLiteral{Val: lit}
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case DATE:
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t, _ := time.Parse("2006-01-02", lit)
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return &DatetimeLiteral{Val: t}
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case TIME:
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t, _ := time.Parse(time.RFC3339, lit)
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return &DatetimeLiteral{Val: t}
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case NANO:
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t, _ := time.Parse(time.RFC3339Nano, lit)
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return &DatetimeLiteral{Val: t}
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case TRUE:
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return &BooleanLiteral{Val: true}
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case FALSE:
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return &BooleanLiteral{Val: false}
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case STRING:
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return &StringLiteral{Val: lit}
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case REGION:
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return &StringLiteral{Val: lit}
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case NUMBER:
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i, _ := strconv.ParseInt(lit, 10, 64)
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return &NumberLiteral{Val: i}
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case DOUBLE:
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f, _ := strconv.ParseFloat(lit, 64)
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return &DoubleLiteral{Val: f}
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case DURATION:
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return &DurationLiteral{Val: 0}
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case JSON:
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var j interface{}
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b := []byte(lit)
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json.Unmarshal(b, &j)
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return &JSONLiteral{Val: j}
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}
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return lit
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}
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