visitors

package
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 Go to latest Published: Nov 9, 2022 License: MIT Imports: 15 Imported by: 0

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Constants

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const (
	// LimitOffset is param name of the first ? of limit ?,?
	LimitOffset = "Offset"
	// LimitCount is param name of the second ? of limit ?,?
	LimitCount = "Count"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type Error 

type Error struct {
	Type   ErrorType
	Detail string
}

Error -

func NewError 

func NewError(t ErrorType, detail string) Error

NewError -

func NewErrorf 

func NewErrorf(t ErrorType, format string, arg ...interface{}) Error

NewErrorf -

func (Error) Error 

func (e Error) Error() string

type ErrorType 

type ErrorType int

ErrorType - 

const (
	// ErrNotSupported not supported sql syntax
	ErrNotSupported ErrorType = iota
	// ErrInvalidExpr invalid
	ErrInvalidExpr
	// ErrTypeCheck type check failed
	ErrTypeCheck
	// ErrCompilerError unexpected behavior in code.
	ErrCompilerError
)

type GoParam 

type GoParam struct {
	Name      string
	TableName string
	InPattern bool
	Order     int
	Marker    *driver.ParamMarkerExpr
}

GoParam is a param with name, order, and the pointer to param obj.

func (GoParam) GoType 

func (g GoParam) GoType() schema.GoType

GoType return GoType of the param.

func (GoParam) String 

func (g GoParam) String() string

type GoVar 

type GoVar struct {
	TableName string
	Name      string
	Type      schema.GoType
}

GoVar - is a go variable with name and type.

type NameResolveVisitor 

type NameResolveVisitor struct {
	// contains filtered or unexported fields
}

NameResolveVisitor -

func NewNameResolveVisitor 

func NewNameResolveVisitor(db []schema.SQLTable) *NameResolveVisitor

NewNameResolveVisitor - after: all ColumnName will have fully qualified names (i.e. table.col), aliasing will be kept.

func (NameResolveVisitor) AppendErr 

func (b NameResolveVisitor) AppendErr(err Error)

func (NameResolveVisitor) DisableLogging added in v0.3.0 

func (b NameResolveVisitor) DisableLogging(y bool)

func (*NameResolveVisitor) Enter 

func (c *NameResolveVisitor) Enter(n ast.Node) (ast.Node, bool)

Enter - Implements Visitor

func (NameResolveVisitor) Errors 

func (b NameResolveVisitor) Errors() []error

func (NameResolveVisitor) FindInCtx 

func (b NameResolveVisitor) FindInCtx(t ast.Node) (ast.Node, bool)

FindInCtx - Returns the closest node that has @p t.

func (NameResolveVisitor) FindInCtxAnyOf 

func (b NameResolveVisitor) FindInCtxAnyOf(types ...ast.Node) (ast.Node, bool)

FindInCtxAnyOf return closest node with type is any of @p types.

func (NameResolveVisitor) IsEnteringRoot 

func (b NameResolveVisitor) IsEnteringRoot() bool

IsEnteringRoot - enter in root node

func (NameResolveVisitor) IsLeavingRoot 

func (b NameResolveVisitor) IsLeavingRoot() bool

/ IsLeavingRoot - leave root node

func (*NameResolveVisitor) Leave 

func (c *NameResolveVisitor) Leave(n ast.Node) (ast.Node, bool)

Leave - Implements Visitor

func (NameResolveVisitor) LogCE 

func (b NameResolveVisitor) LogCE(f string, args ...interface{})

compiler error

func (NameResolveVisitor) LogInfo 

func (b NameResolveVisitor) LogInfo(f string, args ...interface{})

user info

func (NameResolveVisitor) LogWarn 

func (b NameResolveVisitor) LogWarn(f string, args ...interface{})

user warning

type OutputExtractVisitor 

type OutputExtractVisitor struct {
	Output []GoVar
	// contains filtered or unexported fields
}

OutputExtractVisitor -

func NewOutputExtractVisitor 

func NewOutputExtractVisitor() *OutputExtractVisitor

NewOutputExtractVisitor -

func (OutputExtractVisitor) AppendErr 

func (b OutputExtractVisitor) AppendErr(err Error)

func (OutputExtractVisitor) DisableLogging added in v0.3.0 

func (b OutputExtractVisitor) DisableLogging(y bool)

func (*OutputExtractVisitor) Enter 

func (s *OutputExtractVisitor) Enter(n ast.Node) (ast.Node, bool)

Enter - Implements Visitor

func (OutputExtractVisitor) Errors 

func (b OutputExtractVisitor) Errors() []error

func (OutputExtractVisitor) FindInCtx 

func (b OutputExtractVisitor) FindInCtx(t ast.Node) (ast.Node, bool)

FindInCtx - Returns the closest node that has @p t.

func (OutputExtractVisitor) FindInCtxAnyOf 

func (b OutputExtractVisitor) FindInCtxAnyOf(types ...ast.Node) (ast.Node, bool)

FindInCtxAnyOf return closest node with type is any of @p types.

func (OutputExtractVisitor) IsEnteringRoot 

func (b OutputExtractVisitor) IsEnteringRoot() bool

IsEnteringRoot - enter in root node

func (OutputExtractVisitor) IsLeavingRoot 

func (b OutputExtractVisitor) IsLeavingRoot() bool

/ IsLeavingRoot - leave root node

func (*OutputExtractVisitor) Leave 

func (s *OutputExtractVisitor) Leave(n ast.Node) (ast.Node, bool)

Leave - Implements Visitor

func (OutputExtractVisitor) LogCE 

func (b OutputExtractVisitor) LogCE(f string, args ...interface{})

compiler error

func (OutputExtractVisitor) LogInfo 

func (b OutputExtractVisitor) LogInfo(f string, args ...interface{})

user info

func (OutputExtractVisitor) LogWarn 

func (b OutputExtractVisitor) LogWarn(f string, args ...interface{})

user warning

type ParamExtractVisitor 

type ParamExtractVisitor struct {
	Params []GoParam
	// contains filtered or unexported fields
}

ParamExtractVisitor - only mysql driver are supported, backend pass. premis: insert stmt has only one value(?, ?...) markers.

func NewParamExtractVisitor 

func NewParamExtractVisitor() *ParamExtractVisitor

NewParamExtractVisitor -

func (ParamExtractVisitor) AppendErr 

func (b ParamExtractVisitor) AppendErr(err Error)

func (ParamExtractVisitor) DisableLogging added in v0.3.0 

func (b ParamExtractVisitor) DisableLogging(y bool)

func (*ParamExtractVisitor) Enter 

func (c *ParamExtractVisitor) Enter(n ast.Node) (ast.Node, bool)

Enter - Implements Visitor

func (ParamExtractVisitor) Errors 

func (b ParamExtractVisitor) Errors() []error

func (ParamExtractVisitor) FindInCtx 

func (b ParamExtractVisitor) FindInCtx(t ast.Node) (ast.Node, bool)

FindInCtx - Returns the closest node that has @p t.

func (ParamExtractVisitor) FindInCtxAnyOf 

func (b ParamExtractVisitor) FindInCtxAnyOf(types ...ast.Node) (ast.Node, bool)

FindInCtxAnyOf return closest node with type is any of @p types.

func (ParamExtractVisitor) IsEnteringRoot 

func (b ParamExtractVisitor) IsEnteringRoot() bool

IsEnteringRoot - enter in root node

func (ParamExtractVisitor) IsLeavingRoot 

func (b ParamExtractVisitor) IsLeavingRoot() bool

/ IsLeavingRoot - leave root node

func (*ParamExtractVisitor) Leave 

func (c *ParamExtractVisitor) Leave(n ast.Node) (ast.Node, bool)

Leave - Implements Visitor

func (ParamExtractVisitor) LogCE 

func (b ParamExtractVisitor) LogCE(f string, args ...interface{})

compiler error

func (ParamExtractVisitor) LogInfo 

func (b ParamExtractVisitor) LogInfo(f string, args ...interface{})

user info

func (ParamExtractVisitor) LogWarn 

func (b ParamExtractVisitor) LogWarn(f string, args ...interface{})

user warning

type PrintFunc 

type PrintFunc = func(format string, a ...interface{})

PrintFunc - print to.

type PrinterVisitor 

type PrinterVisitor struct {
	// contains filtered or unexported fields
}

PrinterVisitor -

func NewPrinterVisitor 

func NewPrinterVisitor(print PrintFunc, format string) *PrinterVisitor

NewPrinterVisitor -

func (*PrinterVisitor) Enter 

func (c *PrinterVisitor) Enter(n ast.Node) (ast.Node, bool)

Enter - Implements Visitor

func (*PrinterVisitor) Leave 

func (c *PrinterVisitor) Leave(n ast.Node) (ast.Node, bool)

Leave - Implements Visitor

type StarElimVisitor 

type StarElimVisitor struct {
	// contains filtered or unexported fields
}

StarElimVisitor - eliminate * in select by replacing it with a list of fields.

func NewStarElimVisitor 

func NewStarElimVisitor(tb schema.SQLTable) *StarElimVisitor

NewStarElimVisitor -

func (StarElimVisitor) AppendErr 

func (b StarElimVisitor) AppendErr(err Error)

func (StarElimVisitor) DisableLogging added in v0.3.0 

func (b StarElimVisitor) DisableLogging(y bool)

func (*StarElimVisitor) Enter 

func (s *StarElimVisitor) Enter(n ast.Node) (ast.Node, bool)

Enter - Implements Visitor

func (StarElimVisitor) Errors 

func (b StarElimVisitor) Errors() []error

func (StarElimVisitor) FindInCtx 

func (b StarElimVisitor) FindInCtx(t ast.Node) (ast.Node, bool)

FindInCtx - Returns the closest node that has @p t.

func (StarElimVisitor) FindInCtxAnyOf 

func (b StarElimVisitor) FindInCtxAnyOf(types ...ast.Node) (ast.Node, bool)

FindInCtxAnyOf return closest node with type is any of @p types.

func (StarElimVisitor) IsEnteringRoot 

func (b StarElimVisitor) IsEnteringRoot() bool

IsEnteringRoot - enter in root node

func (StarElimVisitor) IsLeavingRoot 

func (b StarElimVisitor) IsLeavingRoot() bool

/ IsLeavingRoot - leave root node

func (*StarElimVisitor) Leave 

func (s *StarElimVisitor) Leave(n ast.Node) (ast.Node, bool)

Leave - Implements Visitor

func (StarElimVisitor) LogCE 

func (b StarElimVisitor) LogCE(f string, args ...interface{})

compiler error

func (StarElimVisitor) LogInfo 

func (b StarElimVisitor) LogInfo(f string, args ...interface{})

user info

func (StarElimVisitor) LogWarn 

func (b StarElimVisitor) LogWarn(f string, args ...interface{})

user warning

type TableAsVisitor 

type TableAsVisitor struct {
	TableNames map[string]bool
	TableAlias map[string]string
	// contains filtered or unexported fields
}

TableAsVisitor - after apply, contains a mapping from alias to original table names. It will also check table name uniqueness, name shadowing.

func NewTableAsVisitor 

func NewTableAsVisitor(tableNames []string) *TableAsVisitor

NewTableAsVisitor - @p tableNames defined tables.

func (TableAsVisitor) AppendErr 

func (b TableAsVisitor) AppendErr(err Error)

func (TableAsVisitor) DisableLogging added in v0.3.0 

func (b TableAsVisitor) DisableLogging(y bool)

func (*TableAsVisitor) Enter 

func (c *TableAsVisitor) Enter(n ast.Node) (ast.Node, bool)

Enter - Implements Visitor

func (TableAsVisitor) Errors 

func (b TableAsVisitor) Errors() []error

func (TableAsVisitor) FindInCtx 

func (b TableAsVisitor) FindInCtx(t ast.Node) (ast.Node, bool)

FindInCtx - Returns the closest node that has @p t.

func (TableAsVisitor) FindInCtxAnyOf 

func (b TableAsVisitor) FindInCtxAnyOf(types ...ast.Node) (ast.Node, bool)

FindInCtxAnyOf return closest node with type is any of @p types.

func (TableAsVisitor) IsEnteringRoot 

func (b TableAsVisitor) IsEnteringRoot() bool

IsEnteringRoot - enter in root node

func (TableAsVisitor) IsLeavingRoot 

func (b TableAsVisitor) IsLeavingRoot() bool

/ IsLeavingRoot - leave root node

func (*TableAsVisitor) Leave 

func (c *TableAsVisitor) Leave(n ast.Node) (ast.Node, bool)

Leave - Implements Visitor

func (TableAsVisitor) LogCE 

func (b TableAsVisitor) LogCE(f string, args ...interface{})

compiler error

func (TableAsVisitor) LogInfo 

func (b TableAsVisitor) LogInfo(f string, args ...interface{})

user info

func (TableAsVisitor) LogWarn 

func (b TableAsVisitor) LogWarn(f string, args ...interface{})

user warning

type TypeInferenceVisitor 

type TypeInferenceVisitor struct {
	DBInfo []schema.SQLTable
	// contains filtered or unexported fields
}

TypeInferenceVisitor - assign types to terms. premise: all column names are fully qualified. after: all ColumnNameExpr will have its type field set to be the type defined 

in the schema file. ColumnNameExpr in select will have its
type field set to column's type, function call term's type will resolve to
the type of the return value.
Terms as input(driver.ParamMarkerExpr), will have its type,
inferred from binary operations, assignments...

func NewTypeInferenceVisitor 

func NewTypeInferenceVisitor(dbs []schema.SQLTable) *TypeInferenceVisitor

NewTypeInferenceVisitor - schema is used for column's type.

func (TypeInferenceVisitor) AppendErr 

func (b TypeInferenceVisitor) AppendErr(err Error)

func (TypeInferenceVisitor) DisableLogging added in v0.3.0 

func (b TypeInferenceVisitor) DisableLogging(y bool)

func (*TypeInferenceVisitor) Enter 

func (t *TypeInferenceVisitor) Enter(n ast.Node) (ast.Node, bool)

Enter - Implements Visitor

func (TypeInferenceVisitor) Errors 

func (b TypeInferenceVisitor) Errors() []error

func (TypeInferenceVisitor) FindInCtx 

func (b TypeInferenceVisitor) FindInCtx(t ast.Node) (ast.Node, bool)

FindInCtx - Returns the closest node that has @p t.

func (TypeInferenceVisitor) FindInCtxAnyOf 

func (b TypeInferenceVisitor) FindInCtxAnyOf(types ...ast.Node) (ast.Node, bool)

FindInCtxAnyOf return closest node with type is any of @p types.

func (TypeInferenceVisitor) IsEnteringRoot 

func (b TypeInferenceVisitor) IsEnteringRoot() bool

IsEnteringRoot - enter in root node

func (TypeInferenceVisitor) IsLeavingRoot 

func (b TypeInferenceVisitor) IsLeavingRoot() bool

/ IsLeavingRoot - leave root node

func (*TypeInferenceVisitor) Leave 

func (t *TypeInferenceVisitor) Leave(n ast.Node) (ast.Node, bool)

Leave - Implements Visitor premise: visitors visit left hand size of binary operation first.

func (TypeInferenceVisitor) LogCE 

func (b TypeInferenceVisitor) LogCE(f string, args ...interface{})

compiler error

func (TypeInferenceVisitor) LogInfo 

func (b TypeInferenceVisitor) LogInfo(f string, args ...interface{})

user info

func (TypeInferenceVisitor) LogWarn 

func (b TypeInferenceVisitor) LogWarn(f string, args ...interface{})

user warning

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