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117 lines
2.5 KiB
Go
117 lines
2.5 KiB
Go
package filter
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// Condition represents a boolean expression derived from the CEL filter.
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type Condition interface {
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isCondition()
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}
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// LogicalOperator enumerates the supported logical operators.
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type LogicalOperator string
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const (
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LogicalAnd LogicalOperator = "AND"
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LogicalOr LogicalOperator = "OR"
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)
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// LogicalCondition composes two conditions with a logical operator.
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type LogicalCondition struct {
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Operator LogicalOperator
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Left Condition
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Right Condition
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}
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func (*LogicalCondition) isCondition() {}
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// NotCondition negates a child condition.
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type NotCondition struct {
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Expr Condition
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}
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func (*NotCondition) isCondition() {}
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// FieldPredicateCondition asserts that a field evaluates to true.
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type FieldPredicateCondition struct {
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Field string
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}
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func (*FieldPredicateCondition) isCondition() {}
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// ComparisonOperator lists supported comparison operators.
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type ComparisonOperator string
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const (
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CompareEq ComparisonOperator = "="
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CompareNeq ComparisonOperator = "!="
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CompareLt ComparisonOperator = "<"
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CompareLte ComparisonOperator = "<="
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CompareGt ComparisonOperator = ">"
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CompareGte ComparisonOperator = ">="
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)
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// ComparisonCondition represents a binary comparison.
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type ComparisonCondition struct {
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Left ValueExpr
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Operator ComparisonOperator
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Right ValueExpr
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}
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func (*ComparisonCondition) isCondition() {}
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// InCondition represents an IN predicate with literal list values.
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type InCondition struct {
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Left ValueExpr
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Values []ValueExpr
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}
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func (*InCondition) isCondition() {}
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// ElementInCondition represents the CEL syntax `"value" in field`.
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type ElementInCondition struct {
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Element ValueExpr
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Field string
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}
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func (*ElementInCondition) isCondition() {}
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// ContainsCondition models the <field>.contains(<value>) call.
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type ContainsCondition struct {
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Field string
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Value string
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}
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func (*ContainsCondition) isCondition() {}
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// ConstantCondition captures a literal boolean outcome.
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type ConstantCondition struct {
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Value bool
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}
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func (*ConstantCondition) isCondition() {}
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// ValueExpr models arithmetic or scalar expressions whose result feeds a comparison.
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type ValueExpr interface {
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isValueExpr()
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}
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// FieldRef references a named schema field.
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type FieldRef struct {
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Name string
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}
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func (*FieldRef) isValueExpr() {}
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// LiteralValue holds a literal scalar.
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type LiteralValue struct {
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Value interface{}
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}
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func (*LiteralValue) isValueExpr() {}
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// FunctionValue captures simple function calls like size(tags).
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type FunctionValue struct {
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Name string
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Args []ValueExpr
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}
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func (*FunctionValue) isValueExpr() {}
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