290 lines
7.7 KiB
C++
290 lines
7.7 KiB
C++
#include "Operand.h"
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#include "Exception.h"
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#include <format>
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#include <iostream>
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#include <time.h>
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namespace jet {
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Operand::Operand(coreutils::ZString &in) {
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doubleValue = 0;
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in.skipWhitespace();
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if(in.ifNext("(")) {
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Operand op(in);
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string = op.string;
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doubleValue = op.doubleValue;
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if(!in.ifNext(")"))
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throw coreutils::Exception("expected ) in expression.");
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}
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if(in.ifNextIgnoreCase("SUBSTRING")) {
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if(!in.ifNext("("))
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throw coreutils::Exception("Expecting ( for SUBSTRING parameters.");
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Operand parm1(in);
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if(!in.ifNext(","))
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throw coreutils::Exception("Expecting , in SUBSTRING expression.");
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Operand parm2(in);
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if(in.ifNext(")")) {
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string = parm1.string.substring(parm2.string.asInteger());
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}
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else if(!in.ifNext(","))
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throw coreutils::Exception("Expecting , in SUBSTRING expression.");
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Operand parm3(in);
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if(in.ifNext(")")) {
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string = parm1.string.substring(parm2.string.asInteger(), parm3.string.asInteger());
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}
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else
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throw coreutils::Exception("Expecting ) at end of substring expression.");
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} else if(in.ifNextIgnoreCase("LEFT")) {
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if(!in.ifNext("("))
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throw coreutils::Exception("Expecting ( for LEFT parameters.");
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Operand parm1(in);
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if(!in.ifNext(","))
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throw coreutils::Exception("Expecting , in LEFT expression.");
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Operand parm2(in);
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if(in.ifNext(")")) {
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string = parm1.string.substring(0, parm2.string.asInteger());
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}
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else
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throw coreutils::Exception("Expecting ) at end of LEFT expression.");
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} else if(in.ifNextIgnoreCase("RIGHT")) {
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} else if(in.ifNextIgnoreCase("TRIM")) {
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} else if(in.ifNextIgnoreCase("TOUPPER")) {
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} else if(in.ifNextIgnoreCase("TOLOWER")) {
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} else if(in.ifNextIgnoreCase("REVERSE")) {
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} else if(in.ifNextIgnoreCase("CONCAT")) {
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} else if(in.ifNextIgnoreCase("INTEGER")) {
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} else if(in.ifNextIgnoreCase("ROUND")) {
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} else if(in.ifNextIgnoreCase("RANDOM")) {
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unsigned int seed = (unsigned int)clock();
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doubleValue = (double) rand_r(&seed) / (RAND_MAX + 1.0);
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isNumber = true;
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string = std::format("{:.12f}", doubleValue);
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string.removeTrailingZeros();
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} else if(in.ifNextIgnoreCase("true")) {
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boolean = true;
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string = "true";
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} else if(in.ifNextIgnoreCase("false")) {
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boolean = false;
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string = "false";
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} else if(in.startsWithNumber()) {
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doubleValue = in.asDouble();
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string = std::format("{:.12f}", doubleValue);
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isNumber = true;
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} else if(in.ifNext("'")) {
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string = in.getTokenExclude("'");
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in.ifNext("'");
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isNumber = false;
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}
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in.skipWhitespace();
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if(in.ifNext("=")) {
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Operand op(in);
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if(isNumber && op.isNumber) {
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if(doubleValue == op.doubleValue) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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} else if(!isNumber && !op.isNumber) {
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if(string == op.string) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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}
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}
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if(in.ifNext("<")) {
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Operand op(in);
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if(isNumber && op.isNumber) {
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std::cout << doubleValue << " < " << op.doubleValue << std::endl;
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if(doubleValue < op.doubleValue) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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} else if(!isNumber && !op.isNumber) {
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if(string < op.string) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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}
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}
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if(in.ifNext(">")) {
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Operand op(in);
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if(isNumber && op.isNumber) {
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if(doubleValue > op.doubleValue) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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} else if(!isNumber && !op.isNumber) {
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if(string > op.string) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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}
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}
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if(in.ifNext("!=") || in.ifNext("<>")) {
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Operand op(in);
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if(isNumber && op.isNumber) {
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if(doubleValue != op.doubleValue) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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} else if(!isNumber && !op.isNumber) {
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if(string != op.string) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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}
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}
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if(in.ifNext("<=")) {
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Operand op(in);
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if(isNumber && op.isNumber) {
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if(doubleValue <= op.doubleValue) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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} else if(!isNumber && !op.isNumber) {
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if(string <= op.string) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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}
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}
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if(in.ifNext(">=")) {
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Operand op(in);
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if(isNumber && op.isNumber) {
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if(doubleValue >= op.doubleValue) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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} else if(!isNumber && !op.isNumber) {
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if(string >= op.string) {
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boolean = true;
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isNumber = false;
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string = "true";
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} else {
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boolean = false;
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isNumber = false;
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string = "false";
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}
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}
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}
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if(in.ifNext("+")) {
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if(isNumber) {
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Operand op(in);
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if(op.isNumber) {
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doubleValue += op.doubleValue;
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string = std::format("{:.12f}", doubleValue);
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string.removeTrailingZeros();
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} else
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throw coreutils::Exception("operand is not a number.");
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} else
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throw coreutils::Exception("operand is not a number.");
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} else if(in.ifNext("-")) {
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if(isNumber) {
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Operand op(in);
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if(op.isNumber) {
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doubleValue -= op.doubleValue;
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string = std::format("{:.12f}", doubleValue);
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string.removeTrailingZeros();
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} else
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throw coreutils::Exception("operand is not a number.");
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} else
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throw coreutils::Exception("operand is not a number.");
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} else if(in.ifNext("*")) {
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if(isNumber) {
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Operand op(in);
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if(op.isNumber) {
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doubleValue *= op.doubleValue;
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string = std::format("{:.12f}", doubleValue);
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string.removeTrailingZeros();
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} else
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throw coreutils::Exception("operand is not a number.");
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} else
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throw coreutils::Exception("operand is not a number.");
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} else if(in.ifNext("/")) {
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if(isNumber) {
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Operand op(in);
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if(op.isNumber) {
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doubleValue /= op.doubleValue;
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string = std::format("{:.12f}", doubleValue);
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string.removeTrailingZeros();
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} else
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throw coreutils::Exception("operand is not a number.");
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} else
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throw coreutils::Exception("operand is not a number.");
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} else {
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// std::cout << ">" << string << std::endl;
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return;
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}
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}
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}
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