88 lines
2.6 KiB
Go
88 lines
2.6 KiB
Go
// Copyright (c) 2024 Celestino Amoroso (celestino.amoroso@gmail.com).
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// All rights reserved.
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// common-errors.go
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package expr
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import (
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"fmt"
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"strings"
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)
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func ErrMissingParams(funcName string, missing []string) (err error) {
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return fmt.Errorf("%s(): missing params -- %s", funcName, strings.Join(missing, ", "))
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}
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func ErrTooFewParams(funcName string, minArgs, maxArgs, argCount int) (err error) {
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if maxArgs < 0 {
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err = fmt.Errorf("%s(): too few params -- expected %d or more, got %d", funcName, minArgs, argCount)
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} else {
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err = fmt.Errorf("%s(): too few params -- expected %d, got %d", funcName, minArgs, argCount)
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}
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return
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}
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func ErrTooManyParams(funcName string, maxArgs, argCount int) (err error) {
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err = fmt.Errorf("%s(): too many params -- expected %d, got %d", funcName, maxArgs, argCount)
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return
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}
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// --- General errors
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func ErrCantConvert(funcName string, value any, kind string) error {
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return fmt.Errorf("%s(): can't convert %s to %s", funcName, TypeName(value), kind)
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}
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func ErrExpectedGot(funcName string, kind string, value any) error {
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return fmt.Errorf("%s(): expected %s, got %s (%v)", funcName, kind, TypeName(value), value)
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}
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func ErrFuncDivisionByZero(funcName string) error {
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return fmt.Errorf("%s(): division by zero", funcName)
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}
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// func ErrDivisionByZero() error {
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// return fmt.Errorf("division by zero")
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// }
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// --- Parameter errors
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// func ErrMissingRequiredParameter(funcName, paramName string) error {
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// return fmt.Errorf("%s(): missing required parameter %q", funcName, paramName)
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// }
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func ErrInvalidParameterValue(funcName, paramName string, paramValue any) error {
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return fmt.Errorf("%s(): invalid value %s (%v) for parameter %q", funcName, TypeName(paramValue), paramValue, paramName)
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}
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func undefArticle(s string) (article string) {
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if len(s) > 0 && strings.Contains("aeiou", s[0:1]) {
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article = "an"
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} else {
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article = "a"
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}
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return
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}
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func prependUndefArticle(s string) (result string) {
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return undefArticle(s) + " " + s
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}
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func ErrWrongParamType(funcName, paramName, paramType string, paramValue any) error {
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var artWantType, artGotType string
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gotType := TypeName(paramValue)
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artGotType = prependUndefArticle(gotType)
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artWantType = prependUndefArticle(paramType)
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return fmt.Errorf("%s(): the %q parameter must be %s, got %s (%v)", funcName, paramName, artWantType, artGotType, paramValue)
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}
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func ErrUnknownParam(funcName, paramName string) error {
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return fmt.Errorf("%s(): unknown parameter %q", funcName, paramName)
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}
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// --- Operator errors
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func ErrLeftOperandMustBeVariable(leftTerm, opTerm *term) error {
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return leftTerm.Errorf("left operand of %q must be a variable", opTerm.source())
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}
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