38 lines
851 B
Go
38 lines
851 B
Go
// Copyright (c) 2024 Celestino Amoroso (celestino.amoroso@gmail.com).
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// All rights reserved.
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// operand-literal.go
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package expr
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import (
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"git.portale-stac.it/go-pkg/expr/kern"
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)
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// -------- literal term
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func newLiteralTerm(tk *Token) *term {
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return &term{
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tk: *tk,
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parent: nil,
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children: nil,
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position: posLeaf,
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priority: priValue,
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evalFunc: evalLiteral,
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}
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}
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// -------- eval func
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func evalLiteral(ctx kern.ExprContext, opTerm *term) (v any, err error) {
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v = opTerm.tk.Value
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return
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}
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// init
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func init() {
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registerTermConstructor(SymString, newLiteralTerm)
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registerTermConstructor(SymInteger, newLiteralTerm)
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registerTermConstructor(SymFloat, newLiteralTerm)
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registerTermConstructor(SymFraction, newLiteralTerm)
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registerTermConstructor(SymBool, newLiteralTerm)
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registerTermConstructor(SymKwNil, newLiteralTerm)
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}
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