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Unit System supporting the Unified Code for Units of Measure (UCUM)
/*
* Units of Measurement Systems
* Copyright (c) 2005-2019, Jean-Marie Dautelle, Werner Keil and others.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions
* and the following disclaimer in the documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of JSR-363, Units of Measurement nor the names of their contributors may be used to
* endorse or promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package systems.uom.ucum.internal.format;
import static systems.uom.ucum.internal.format.UnitTokenConstants.*;
import static tech.units.indriya.AbstractUnit.ONE;
import javax.measure.Unit;
import javax.measure.Prefix;
import tech.units.indriya.format.SymbolMap;
import tech.units.indriya.function.LogConverter;
import tech.units.indriya.function.MultiplyConverter;
@SuppressWarnings({"rawtypes", "unchecked"})
public final class UnitFormatParser {
private static class Exponent {
public final int pow;
public final int root;
public Exponent(int pow, int root) {
this.pow = pow;
this.root = root;
}
}
private SymbolMap symbols;
public UnitFormatParser(SymbolMap symbols, java.io.Reader in) {
this(in);
this.symbols = symbols;
}
final public Unit parseUnit() throws TokenException {
Unit result = CompoundExpr();
consumeToken(0);
{
return result;
}
}
final public Unit CompoundExpr() throws TokenException {
throw new UnsupportedOperationException("Compound units not supported");
}
final public Unit AddExpr() throws TokenException {
Unit result = ONE;
Number n1 = null;
Token sign1 = null;
Number n2 = null;
Token sign2 = null;
if (jj_2_1(2147483647)) {
n1 = NumberExpr();
sign1 = Sign();
} else {
}
result = MulExpr();
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case PLUS:
case MINUS:
sign2 = Sign();
n2 = NumberExpr();
break;
default:
laA[1] = genInt;
}
if (n1 != null) {
if (sign1.image.equals("-")) {
result = result.multiply(-1);
}
result = result.shift(n1.doubleValue());
}
if (n2 != null) {
double offset = n2.doubleValue();
if (sign2.image.equals("-")) {
offset = -offset;
}
result = result.shift(offset);
}
{
return result;
}
}
final public Unit MulExpr() throws TokenException {
Unit result = ONE;
Unit temp = ONE;
result = ExponentExpr();
label_2:
while (true) {
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case ASTERISK:
case MIDDLE_DOT:
case SOLIDUS:
break;
default:
laA[2] = genInt;
break label_2;
}
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case ASTERISK:
case MIDDLE_DOT:
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case ASTERISK:
consumeToken(ASTERISK);
break;
case MIDDLE_DOT:
consumeToken(MIDDLE_DOT);
break;
default:
laA[3] = genInt;
consumeToken(-1);
throw new TokenException();
}
temp = ExponentExpr();
result = result.multiply(temp);
break;
case SOLIDUS:
consumeToken(SOLIDUS);
temp = ExponentExpr();
result = result.divide(temp);
break;
default:
laA[4] = genInt;
consumeToken(-1);
throw new TokenException();
}
}
{
return result;
}
}
final public Unit ExponentExpr() throws TokenException {
Unit result = ONE;
Exponent exponent = null;
Token token = null;
if (jj_2_2(2147483647)) {
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case INTEGER:
token = consumeToken(INTEGER);
break;
case E:
token = consumeToken(E);
break;
default:
laA[5] = genInt;
consumeToken(-1);
throw new TokenException();
}
consumeToken(CARET);
result = AtomicExpr();
double base;
if (token.kind == INTEGER) {
base = Integer.parseInt(token.image);
} else {
base = StrictMath.E;
}
{
return result.transform(new LogConverter(base).inverse());
}
} else {
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case OPEN_PAREN:
case INTEGER:
case FLOATING_POINT:
case UNIT_IDENTIFIER:
result = AtomicExpr();
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case CARET:
case SUPERSCRIPT_INTEGER:
exponent = Exp();
break;
default:
laA[6] = genInt;
}
if (exponent != null) {
if (exponent.pow != 1) {
result = result.pow(exponent.pow);
}
if (exponent.root != 1) {
result = result.root(exponent.root);
}
} {
return result;
}
case LOG:
case NAT_LOG:
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case LOG:
consumeToken(LOG);
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case INTEGER:
token = consumeToken(INTEGER);
break;
default:
laA[7] = genInt;
}
break;
case NAT_LOG:
token = consumeToken(NAT_LOG);
break;
default:
laA[8] = genInt;
consumeToken(-1);
throw new TokenException();
}
consumeToken(OPEN_PAREN);
result = AddExpr();
consumeToken(CLOSE_PAREN);
double base = 10;
if (token != null) {
if (token.kind == INTEGER) {
base = Integer.parseInt(token.image);
} else if (token.kind == NAT_LOG) {
base = StrictMath.E;
}
} {
return result.transform(new LogConverter(base));
}
default:
laA[9] = genInt;
consumeToken(-1);
throw new TokenException();
}
}
}
final public Unit AtomicExpr() throws TokenException {
Unit result = ONE;
Number n = null;
Token token = null;
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case INTEGER:
case FLOATING_POINT:
n = NumberExpr();
if (n instanceof Integer) {
{
return result.multiply(n.intValue());
}
} else {
{
return result.multiply(n.doubleValue());
}
}
case UNIT_IDENTIFIER:
token = consumeToken(UNIT_IDENTIFIER);
Unit unit = symbols.getUnit(token.image);
if (unit == null) {
Prefix prefix = symbols.getPrefix(token.image);
if (prefix != null) {
String prefixSymbol = symbols.getSymbol(prefix);
unit = symbols.getUnit(token.image.substring(prefixSymbol.length()));
if (unit != null) {
{
return unit.transform(MultiplyConverter.ofPrefix(prefix));
}
}
}
{
throw new TokenException();
}
} else {
{
return unit;
}
}
case OPEN_PAREN:
consumeToken(OPEN_PAREN);
result = AddExpr();
consumeToken(CLOSE_PAREN); {
return result;
}
default:
laA[10] = genInt;
consumeToken(-1);
throw new TokenException();
}
}
final public Token Sign() throws TokenException {
Token result = null;
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case PLUS:
result = consumeToken(PLUS);
break;
case MINUS:
result = consumeToken(MINUS);
break;
default:
laA[11] = genInt;
consumeToken(-1);
throw new TokenException();
}
{
return result;
}
}
final public Number NumberExpr() throws TokenException {
Token token = null;
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case INTEGER:
token = consumeToken(INTEGER); {
return Long.valueOf(token.image);
}
case FLOATING_POINT:
token = consumeToken(FLOATING_POINT); {
return Double.valueOf(token.image);
}
default:
laA[12] = genInt;
consumeToken(-1);
throw new TokenException();
}
}
final public Exponent Exp() throws TokenException {
Token powSign = null;
Token powToken = null;
Token rootSign = null;
Token rootToken = null;
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case CARET:
consumeToken(CARET);
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case PLUS:
case MINUS:
case INTEGER:
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case PLUS:
case MINUS:
powSign = Sign();
break;
default:
laA[13] = genInt;
}
powToken = consumeToken(INTEGER);
int pow = Integer.parseInt(powToken.image);
if ((powSign != null) && powSign.image.equals("-")) {
pow = -pow;
} {
return new Exponent(pow, 1);
}
case OPEN_PAREN:
consumeToken(OPEN_PAREN);
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case PLUS:
case MINUS:
powSign = Sign();
break;
default:
laA[14] = genInt;
}
powToken = consumeToken(INTEGER);
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case SOLIDUS:
consumeToken(SOLIDUS);
switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
case PLUS:
case MINUS:
rootSign = Sign();
break;
default:
laA[15] = genInt;
}
rootToken = consumeToken(INTEGER);
break;
default:
laA[16] = genInt;
}
consumeToken(CLOSE_PAREN);
pow = Integer.parseInt(powToken.image);
if ((powSign != null) && powSign.image.equals("-")) {
pow = -pow;
}
int root = 1;
if (rootToken != null) {
root = Integer.parseInt(rootToken.image);
if ((rootSign != null) && rootSign.image.equals("-")) {
root = -root;
}
} {
return new Exponent(pow, root);
}
default:
laA[17] = genInt;
consumeToken(-1);
throw new TokenException();
}
case SUPERSCRIPT_INTEGER:
powToken = consumeToken(SUPERSCRIPT_INTEGER);
int pow = 0;
for (int i = 0; i < powToken.image.length(); i += 1) {
pow *= 10;
switch (powToken.image.charAt(i)) {
case '\u00b9':
pow += 1;
break;
case '\u00b2':
pow += 2;
break;
case '\u00b3':
pow += 3;
break;
case '\u2074':
pow += 4;
break;
case '\u2075':
pow += 5;
break;
case '\u2076':
pow += 6;
break;
case '\u2077':
pow += 7;
break;
case '\u2078':
pow += 8;
break;
case '\u2079':
pow += 9;
break;
}
} {
return new Exponent(pow, 1);
}
default:
laA[18] = genInt;
consumeToken(-1);
throw new TokenException();
}
}
private boolean jj_2_1(int xla) {
laInt = xla;
lastpos = scanpos = token;
try {
return !jj_3_1();
} catch (LookaheadSuccess ls) {
return true;
} finally {
jj_save(0, xla);
}
}
private boolean jj_2_2(int xla) {
laInt = xla;
lastpos = scanpos = token;
try {
return !jj_3_2();
} catch (LookaheadSuccess ls) {
return true;
} finally {
jj_save(1, xla);
}
}
private boolean jj_3R_3() {
Token xsp;
xsp = scanpos;
if (jj_3R_5()) {
scanpos = xsp;
if (jj_3R_6())
return true;
}
return false;
}
private boolean jj_3R_6() {
return scanToken(FLOATING_POINT);
}
private boolean jj_3_2() {
Token xsp;
xsp = scanpos;
if (scanToken(14)) {
scanpos = xsp;
if (scanToken(19))
return true;
}
return scanToken(CARET);
}
private boolean jj_3_1() {
return jj_3R_3() || jj_3R_4();
}
private boolean jj_3R_4() {
Token xsp;
xsp = scanpos;
if (scanToken(5)) {
scanpos = xsp;
if (scanToken(6))
return true;
}
return false;
}
private boolean jj_3R_5() {
return scanToken(INTEGER);
}
/** Generated Token Manager. */
public UnitTokenManager tokenSource;
UCUMCharStream inputStream;
/** Current token. */
public Token token;
/** Next token. */
public Token nextToken;
private int nextTokenIndex;
private Token scanpos, lastpos;
private int laInt;
private int genInt;
final private int[] laA = new int[19];
static private int[] laB;
static {
init();
}
private static void init() {
laB = new int[]{0x800, 0x60, 0x380, 0x180, 0x380, 0x84000, 0x8400, 0x4000, 0x60000, 0x175000, 0x115000, 0x60, 0x14000, 0x60, 0x60, 0x60, 0x200, 0x5060, 0x8400,};
}
final private JJCalls[] rtns = new JJCalls[2];
private boolean rescan = false;
private int gcInt = 0;
/** Constructor with InputStream. */
public UnitFormatParser(java.io.InputStream stream) {
this(stream, null);
}
/** Constructor with InputStream and supplied encoding */
public UnitFormatParser(java.io.InputStream stream, String encoding) {
try {
inputStream = new UCUMCharStream(stream, encoding, 1, 1);
} catch (java.io.UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
tokenSource = new UnitTokenManager(inputStream);
token = new Token();
nextTokenIndex = -1;
genInt = 0;
for (int i = 0; i < 19; i++) {
laA[i] = -1;
}
for (int i = 0; i < rtns.length; i++) {
rtns[i] = new JJCalls();
}
}
/** Reinitialise. */
public void ReInit(java.io.InputStream stream) {
ReInit(stream, null);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream stream, String encoding) {
try {
inputStream.ReInit(stream, encoding, 1, 1);
} catch (java.io.UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
tokenSource.ReInit(inputStream);
token = new Token();
nextTokenIndex = -1;
genInt = 0;
for (int i = 0; i < 19; i++) {
laA[i] = -1;
}
for (int i = 0; i < rtns.length; i++) {
rtns[i] = new JJCalls();
}
}
/** Constructor. */
public UnitFormatParser(java.io.Reader stream) {
inputStream = new UCUMCharStream(stream, 1, 1);
tokenSource = new UnitTokenManager(inputStream);
token = new Token();
nextTokenIndex = -1;
genInt = 0;
for (int i = 0; i < 19; i++) {
laA[i] = -1;
}
for (int i = 0; i < rtns.length; i++) {
rtns[i] = new JJCalls();
}
}
/** Reinitialise. */
public void ReInit(java.io.Reader stream) {
inputStream.ReInit(stream, 1, 1);
tokenSource.ReInit(inputStream);
token = new Token();
nextTokenIndex = -1;
genInt = 0;
for (int i = 0; i < 19; i++) {
laA[i] = -1;
}
for (int i = 0; i < rtns.length; i++) {
rtns[i] = new JJCalls();
}
}
/** Constructor with generated Token Manager. */
public UnitFormatParser(UnitTokenManager tm) {
tokenSource = tm;
token = new Token();
nextTokenIndex = -1;
genInt = 0;
for (int i = 0; i < 19; i++) {
laA[i] = -1;
}
for (int i = 0; i < rtns.length; i++) {
rtns[i] = new JJCalls();
}
}
/** Reinitialise. */
public void ReInit(UnitTokenManager tm) {
tokenSource = tm;
token = new Token();
nextTokenIndex = -1;
genInt = 0;
for (int i = 0; i < 19; i++) {
laA[i] = -1;
}
for (int i = 0; i < rtns.length; i++) {
rtns[i] = new JJCalls();
}
}
private Token consumeToken(int kind) throws TokenException {
Token oldToken;
if ((oldToken = token).next != null)
token = token.next;
else
token = token.next = tokenSource.getNextToken();
nextTokenIndex = -1;
if (token.kind == kind) {
genInt++;
if (++gcInt > 100) {
gcInt = 0;
for (JJCalls jj_2_rtn : rtns) {
JJCalls c = jj_2_rtn;
while (c != null) {
if (c.gen < genInt)
c.first = null;
c = c.next;
}
}
}
return token;
}
token = oldToken;
this.kind = kind;
throw raiseTokenException();
}
static private final class LookaheadSuccess extends java.lang.RuntimeException {
private static final long serialVersionUID = 2205332054119123041L;
}
private boolean scanToken(int kind) {
if (scanpos == lastpos) {
laInt--;
if (scanpos.next == null) {
lastpos = scanpos = scanpos.next = tokenSource.getNextToken();
} else {
lastpos = scanpos = scanpos.next;
}
} else {
scanpos = scanpos.next;
}
if (rescan) {
int i = 0;
Token tok = token;
while (tok != null && tok != scanpos) {
i++;
tok = tok.next;
}
if (tok != null)
jj_add_error_token(kind, i);
}
if (scanpos.kind != kind)
return true;
if (laInt == 0 && scanpos == lastpos)
throw new LookaheadSuccess();
return false;
}
/** Get the next Token. */
final public Token getNextToken() {
if (token.next != null)
token = token.next;
else
token = token.next = tokenSource.getNextToken();
nextTokenIndex = -1;
genInt++;
return token;
}
/** Get the specific Token. */
final public Token getToken(int index) {
Token t = token;
for (int i = 0; i < index; i++) {
if (t.next != null)
t = t.next;
else
t = t.next = tokenSource.getNextToken();
}
return t;
}
private int jj_ntk() {
if ((nextToken = token.next) == null) {
return (nextTokenIndex = (token.next = tokenSource.getNextToken()).kind);
}
else {
return (nextTokenIndex = nextToken.kind);
}
}
private java.util.List expentries = new java.util.ArrayList<>();
private int[] expentry;
private int kind = -1;
private int[] lastTokens = new int[100];
private int endpos;
private void jj_add_error_token(int kind, int pos) {
if (pos >= 100)
return;
if (pos == endpos + 1) {
lastTokens[endpos++] = kind;
} else if (endpos != 0) {
expentry = new int[endpos];
System.arraycopy(lastTokens, 0, expentry, 0, endpos);
entriesLoop:
for (int[] jj_expentry1 : expentries) {
if (jj_expentry1.length == expentry.length) {
for (int i = 0; i < expentry.length; i++) {
if (jj_expentry1[i] != expentry[i]) {
continue entriesLoop;
}
}
expentries.add(expentry);
break;
}
}
if (pos != 0)
lastTokens[(endpos = pos) - 1] = kind;
}
}
/** Generate TokenException. */
TokenException raiseTokenException() {
expentries.clear();
boolean[] la1tokens = new boolean[21];
if (kind >= 0) {
la1tokens[kind] = true;
kind = -1;
}
for (int i = 0; i < 19; i++) {
if (laA[i] == genInt) {
for (int j = 0; j < 32; j++) {
if ((laB[i] & (1 << j)) != 0) {
la1tokens[j] = true;
}
}
}
}
for (int i = 0; i < 21; i++) {
if (la1tokens[i]) {
expentry = new int[1];
expentry[0] = i;
expentries.add(expentry);
}
}
endpos = 0;
jj_rescan_token();
jj_add_error_token(0, 0);
int[][] exptokseq = new int[expentries.size()][];
for (int i = 0; i < expentries.size(); i++) {
exptokseq[i] = expentries.get(i);
}
return new TokenException(token, exptokseq, tokenImage);
}
/** Enable tracing. */
final public void enable_tracing() {
}
/** Disable tracing. */
final public void disable_tracing() {
}
private void jj_rescan_token() {
rescan = true;
for (int i = 0; i < 2; i++) {
try {
JJCalls p = rtns[i];
do {
if (p.gen > genInt) {
laInt = p.arg;
lastpos = scanpos = p.first;
switch (i) {
case 0:
jj_3_1();
break;
case 1:
jj_3_2();
break;
}
}
p = p.next;
} while (p != null);
} catch (LookaheadSuccess ls) {
}
}
rescan = false;
}
private void jj_save(int index, int xla) {
JJCalls p = rtns[index];
while (p.gen > genInt) {
if (p.next == null) {
p = p.next = new JJCalls();
break;
}
p = p.next;
}
p.gen = genInt + xla - laInt;
p.first = token;
p.arg = xla;
}
static final class JJCalls {
int gen;
Token first;
int arg;
JJCalls next;
}
}
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