delete old parser

f.go

@@ -57,7 +57,7 @@ func parseLine(line string, vars map[string]Dist) (string, Dist, error) {
 		return parseLineErr("Operator must have operand; can't operate on nothing")
 	case 1:
 		var_word, var_word_exists := vars[words[0]]
-		single_float, err1 := strconv.ParseFloat(words[0], 64)
+		single_float, err1 := strconv.ParseFloat(words[0], 64) // abstract this away to search for K/M/B/T/etc.
 		switch {
 		case var_word_exists:
 			dist = var_word

f0.go

@@ -1,230 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"fmt"
-	"math"
-	"os"
-	"strconv"
-	"strings"
-)
-
-const NORMAL90CONFIDENCE = 1.6448536269514727
-
-func boundsToLogParams(low float64, high float64) (float64, float64) {
-	loglow := math.Log(low)
-	loghigh := math.Log(high)
-	logmean := (loghigh + loglow) / 2.0
-	logstd := (loghigh - loglow) / (2.0 * NORMAL90CONFIDENCE)
-	return logmean, logstd
-
-}
-
-func multiplyLognormals(logmean1 float64, logstd1 float64, logmean2 float64, logstd2 float64) (float64, float64) {
-	return logmean1 + logmean2, math.Sqrt(logstd1*logstd1 + logstd2*logstd2)
-}
-
-func logParamsToBounds(logmean float64, logstd float64) (float64, float64) {
-	h := logstd * NORMAL90CONFIDENCE
-	loglow := logmean - h
-	loghigh := logmean + h
-	return math.Exp(loglow), math.Exp(loghigh)
-}
-
-func combineBounds(old_low, old_high, new_low, new_high float64) (float64, float64) {
-	logmean_old, logstd_old := boundsToLogParams(old_low, old_high)
-	logmean_new, logstd_new := boundsToLogParams(new_low, new_high)
-
-	logmean_product, logstd_product := multiplyLognormals(logmean_old, logstd_old, logmean_new, logstd_new)
-
-	return logParamsToBounds(logmean_product, logstd_product)
-}
-
-func prettyPrintDist(low float64, high float64) {
-	// fmt.Printf("=> %.1f %.1f\n", low, high)
-	fmt.Printf("=> ")
-	switch {
-	case math.Abs(low) >= 1_000_000_000_000:
-		fmt.Printf("%.1fT", low/1_000_000_000_000)
-	case math.Abs(low) >= 1_000_000_000:
-		fmt.Printf("%.1fB", low/1_000_000_000)
-	case math.Abs(low) >= 1_000_000:
-		fmt.Printf("%.1fM", low/1_000_000)
-	case math.Abs(low) >= 1_000:
-		fmt.Printf("%.1fK", low/1_000)
-	case math.Abs(low) >= 1_000:
-		fmt.Printf("%.1fK", low/1_000)
-	default:
-		fmt.Printf("%.1f", low)
-	}
-	fmt.Printf(" ")
-	switch {
-	case math.Abs(high) >= 1_000_000_000_000:
-		fmt.Printf("%.1fT", high/1_000_000_000_000)
-	case math.Abs(high) >= 1_000_000_000:
-		fmt.Printf("%.1fB", high/1_000_000_000)
-	case math.Abs(high) >= 1_000_000:
-		fmt.Printf("%.1fM", high/1_000_000)
-	case math.Abs(high) >= 1_000:
-		fmt.Printf("%.1fK", high/1_000)
-	case math.Abs(high) >= 1_000:
-		fmt.Printf("%.1fK", high/1_000)
-	default:
-		fmt.Printf("%.1f", high)
-	}
-	fmt.Printf("\n")
-	// fmt.Printf("=> %.1f %.1f\n", low, high)
-}
-
-func main() {
-	reader := bufio.NewReader(os.Stdin)
-
-	var old_low, old_high float64
-	var input string
-	var err1, err2 error
-
-InitialForLoop:
-	for {
-		input, _ = reader.ReadString('\n')
-		input = strings.TrimSpace(input)
-		words := strings.Split(input, " ")
-
-		switch len(words) {
-		case 1:
-			single_float, err1 := strconv.ParseFloat(words[0], 64)
-			if err1 != nil {
-				fmt.Println("Trying to initialize with a scalar, but scalar is not a float")
-				continue InitialForLoop
-			}
-			old_low = single_float
-			old_high = single_float
-		case 2:
-			old_low, err1 = strconv.ParseFloat(words[0], 64)
-			old_high, err2 = strconv.ParseFloat(words[1], 64)
-			if err1 != nil || err2 != nil {
-				fmt.Println("Trying to initialize with a distribution, but distribution is not specified as two floats")
-				continue InitialForLoop
-			}
-		default:
-			fmt.Println("Please enter two floats separated by a space, like: 1 10")
-			continue InitialForLoop
-		}
-		if err1 != nil || err2 != nil {
-			fmt.Println("Please enter two floats separated by a space, like: 1 10")
-			continue
-		}
-		break
-	}
-	prettyPrintDist(old_low, old_high)
-
-	error_msg_cont := "Valid inputs: 2 || * 2 || / 2 || 2 20 || * 2 20 || / 2 20 || i || e"
-EventForLoop:
-	for {
-		input, _ = reader.ReadString('\n')
-		if strings.TrimSpace(input) == "" {
-			continue EventForLoop
-		}
-		words := strings.Split(strings.TrimSpace(input), " ")
-
-		var new_low, new_high float64
-
-		switch words[0] {
-		case "*":
-			switch len(words) {
-			case 1:
-				fmt.Println("Can't multiply by nothing")
-				fmt.Println(error_msg_cont)
-				continue EventForLoop
-			case 2:
-				single_float, err1 := strconv.ParseFloat(words[1], 64)
-				if err1 != nil {
-					fmt.Println("Trying to multiply by a scalar, but scalar is not a float")
-					fmt.Println(error_msg_cont)
-					continue EventForLoop
-				}
-				new_low = single_float
-				new_high = single_float
-			case 3:
-				new_low, err1 = strconv.ParseFloat(words[1], 64)
-				new_high, err2 = strconv.ParseFloat(words[2], 64)
-				if err1 != nil || err2 != nil {
-					fmt.Println(error_msg_cont)
-					fmt.Println("Trying to multiply by a distribution, but distribution is not specified as two floats")
-					continue EventForLoop
-				}
-			default:
-				fmt.Println("Trying to multiply by something, but this something is neither a scalar nor a distribution")
-				fmt.Println(error_msg_cont)
-				continue EventForLoop
-			}
-		case "/":
-			switch len(words) {
-			case 1:
-				fmt.Println("Can't divide by nothing")
-				fmt.Println(error_msg_cont)
-				continue EventForLoop
-			case 2:
-				single_float, err1 := strconv.ParseFloat(words[1], 64)
-				if err1 != nil {
-					fmt.Println("Trying to divide by a scalar, but scalar is not a float")
-					fmt.Println(error_msg_cont)
-					continue EventForLoop
-				}
-				new_low = 1.0 / single_float
-				new_high = 1.0 / single_float
-			case 3:
-				new_low, err1 = strconv.ParseFloat(words[1], 64)
-				new_high, err2 = strconv.ParseFloat(words[2], 64)
-				if err1 != nil || err2 != nil {
-					fmt.Println("Trying to divide by a distribution, but distribution is not specified as two floats")
-					fmt.Println(error_msg_cont)
-					continue EventForLoop
-				}
-				tmp := new_low
-				new_low = 1.0 / new_high
-				new_high = 1.0 / tmp
-			default:
-				fmt.Println("Trying to divide by something, but this something is neither a scalar nor a distribution")
-			}
-		default:
-			switch len(words) {
-			case 0:
-				continue EventForLoop
-			case 1:
-				switch words[0] {
-				case "i":
-					fmt.Printf("=> %.1f %.1f\n", old_low, old_high)
-					logmean_old, logstd_old := boundsToLogParams(old_low, old_high)
-					fmt.Printf("=> Lognormal, with logmean: %.1f, logstd: %.1f\n", logmean_old, logstd_old)
-					continue EventForLoop
-				case "e":
-					break EventForLoop
-				default:
-					single_float, err1 := strconv.ParseFloat(words[0], 64)
-					if err1 != nil {
-						fmt.Println("Unrecognized command")
-						fmt.Println(error_msg_cont)
-						continue EventForLoop
-					}
-					new_low = single_float
-					new_high = single_float
-				}
-			case 2:
-				new_low, err1 = strconv.ParseFloat(words[0], 64)
-				new_high, err2 = strconv.ParseFloat(words[1], 64)
-				if err1 != nil || err2 != nil {
-					fmt.Println("Trying to multiply by a distribution, but distribution is not specified as two floats")
-					fmt.Println(error_msg_cont)
-					continue EventForLoop
-				}
-			default:
-				fmt.Println("No operation takes more than 3 words")
-				fmt.Println(error_msg_cont)
-				continue EventForLoop
-			}
-		}
-
-		old_low, old_high = combineBounds(old_low, old_high, new_low, new_high)
-		prettyPrintDist(old_low, old_high)
-	}
-}