parser

package
v0.0.0-...-3b5b65c Latest Latest
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 Go to latest Published: May 14, 2024 License: AGPL-3.0 Imports: 10 Imported by: 0

Documentation

Overview

Package parser contains expression parser for search parameter.

Index

Constants

View Source 
const DefaultArgsLen = 6

Variables

This section is empty.

Functions

This section is empty.

Types

type Boolean 

type Boolean bool

func (*Boolean) Capture 

func (b *Boolean) Capture(values []string) error

type Compare 

type Compare struct {
	Operator string   `@( "<=" | ">=" | "=" | "<" | ">" | "!=" )`
	Operand  *Operand `(  @@`
	Select   *Operand ` | @@ )`
}

func (*Compare) ExprQuery 

func (c *Compare) ExprQuery(op string) bson.M

func (*Compare) MongoQuery 

func (c *Compare) MongoQuery() bson.M

func (*Compare) NotPostgresQuery 

func (c *Compare) NotPostgresQuery() (string, pgx.NamedArgs)

func (*Compare) PostgresQuery 

func (c *Compare) PostgresQuery() (string, pgx.NamedArgs)

type Condition 

type Condition struct {
	Operand *ConditionOperand `  @@`
	Not     *Condition        `| "NOT" @@`
}

func (*Condition) GetFields 

func (c *Condition) GetFields() []string

func (*Condition) MongoExprQuery 

func (c *Condition) MongoExprQuery() bson.M

func (*Condition) MongoQuery 

func (c *Condition) MongoQuery() bson.M

func (*Condition) PostgresQuery 

func (c *Condition) PostgresQuery(prefix string) (string, pgx.NamedArgs)

type ConditionOperand 

type ConditionOperand struct {
	Operand      *Operand      `@@`
	ConditionRHS *ConditionRHS `[ @@ ]`
}

func (*ConditionOperand) GetFields 

func (o *ConditionOperand) GetFields() []string

func (*ConditionOperand) MongoExprQuery 

func (o *ConditionOperand) MongoExprQuery() bson.M

func (*ConditionOperand) MongoQuery 

func (o *ConditionOperand) MongoQuery() bson.M

func (*ConditionOperand) NotExprQuery 

func (o *ConditionOperand) NotExprQuery() bson.M

func (*ConditionOperand) NotMongoQuery 

func (o *ConditionOperand) NotMongoQuery() bson.M

func (*ConditionOperand) NotPostgresQuery 

func (o *ConditionOperand) NotPostgresQuery(prefix string) (string, pgx.NamedArgs)

func (*ConditionOperand) PostgresQuery 

func (o *ConditionOperand) PostgresQuery(prefix string) (string, pgx.NamedArgs)

type ConditionRHS 

type ConditionRHS struct {
	Compare     *Compare     `  @@`
	Like        *Like        `| "LIKE" @@`
	NotLike     *NotLike     `| "NOT" "LIKE" @@`
	Contains    *Contains    `| "CONTAINS" @@`
	NotContains *NotContains `| "NOT" "CONTAINS" @@`
}

func (*ConditionRHS) ExprQuery 

func (r *ConditionRHS) ExprQuery(op string) bson.M

func (*ConditionRHS) MongoQuery 

func (r *ConditionRHS) MongoQuery() bson.M

func (*ConditionRHS) NotExprQuery 

func (r *ConditionRHS) NotExprQuery(op string) bson.M

func (*ConditionRHS) NotMongoQuery 

func (r *ConditionRHS) NotMongoQuery() bson.M

func (*ConditionRHS) NotPostgresQuery 

func (r *ConditionRHS) NotPostgresQuery() (string, pgx.NamedArgs)

func (*ConditionRHS) PostgresQuery 

func (r *ConditionRHS) PostgresQuery() (string, pgx.NamedArgs)

type Contains 

type Contains struct {
	Operand *Operand `@@`
}

func (*Contains) ExprQuery 

func (l *Contains) ExprQuery(op string) bson.M

func (*Contains) MongoQuery 

func (l *Contains) MongoQuery() bson.M

func (*Contains) PostgresQuery 

func (l *Contains) PostgresQuery() (string, pgx.NamedArgs)

type Expression 

type Expression struct {
	Or []*OrCondition `@@ { "OR" @@ }`
}

func (*Expression) GetFields 

func (e *Expression) GetFields() []string

func (*Expression) MongoExprQuery 

func (e *Expression) MongoExprQuery() bson.M

func (*Expression) MongoQuery 

func (e *Expression) MongoQuery() bson.M

func (*Expression) PostgresQuery 

func (e *Expression) PostgresQuery(prefix string) (string, pgx.NamedArgs)

type Like 

type Like struct {
	Operand *Operand `@@`
}

func (*Like) ExprQuery 

func (l *Like) ExprQuery(op string) bson.M

func (*Like) MongoQuery 

func (l *Like) MongoQuery() bson.M

func (*Like) NotPostgresQuery 

func (l *Like) NotPostgresQuery() (string, pgx.NamedArgs)

func (*Like) PostgresQuery 

func (l *Like) PostgresQuery() (string, pgx.NamedArgs)

type NotContains 

type NotContains struct {
	Operand *Operand `@@`
}

func (*NotContains) ExprQuery 

func (l *NotContains) ExprQuery(op string) bson.M

func (*NotContains) MongoQuery 

func (l *NotContains) MongoQuery() bson.M

func (*NotContains) PostgresQuery 

func (l *NotContains) PostgresQuery() (string, pgx.NamedArgs)

type NotLike 

type NotLike struct {
	Operand *Operand `@@`
}

func (*NotLike) ExprQuery 

func (l *NotLike) ExprQuery(op string) bson.M

func (*NotLike) MongoQuery 

func (l *NotLike) MongoQuery() bson.M

func (*NotLike) NotPostgresQuery 

func (l *NotLike) NotPostgresQuery() (string, pgx.NamedArgs)

func (*NotLike) PostgresQuery 

func (l *NotLike) PostgresQuery() (string, pgx.NamedArgs)

type Operand 

type Operand struct {
	Terms []*Term `@@ { @@ }`
}

func (*Operand) Val 

func (o *Operand) Val() any

type OrCondition 

type OrCondition struct {
	And []*Condition `@@ { "AND" @@ }`
}

func (*OrCondition) GetFields 

func (c *OrCondition) GetFields() []string

func (*OrCondition) MongoExprQuery 

func (c *OrCondition) MongoExprQuery() bson.M

func (*OrCondition) MongoQuery 

func (c *OrCondition) MongoQuery() bson.M

func (*OrCondition) PostgresQuery 

func (c *OrCondition) PostgresQuery(prefix string) (string, pgx.NamedArgs)

type Parser 

type Parser interface {
	Parse(str string, isAllowedField func(f string) bool) (Query, error)
}

Parser parses expression.

func NewParser 

func NewParser() Parser

NewParser creates new parser.

type Query 

type Query interface {
	MongoQuery() bson.M
	PostgresQuery(prefix string) (string, pgx.NamedArgs)
	MongoExprQuery() bson.M
	GetFields() []string
}

type Term 

type Term struct {
	Name        *string  `(@Ident`
	NumberFloat *float64 ` | @Float`
	NumberInt   *int     ` | @Int`
	Str         *string  ` | @String`
	Boolean     *Boolean ` | @("TRUE" | "FALSE")`
	Null        bool     ` | @"NULL" )`
}

func (*Term) Val 

func (t *Term) Val() any

Source Files

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