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/*
* 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 tech.units.indriya.AbstractUnit.ONE;
import javax.measure.Unit;
import javax.measure.Prefix;
import tech.units.indriya.AbstractUnit;
import tech.units.indriya.format.SymbolMap;
import tech.units.indriya.function.MultiplyConverter;
import static systems.uom.ucum.internal.format.UCUMTokenConstants.*;
/**
*
* Parser definition for parsing {@link AbstractUnit Unit}s
* according to the
* Uniform Code for CommonUnits of Measure.
*
* @author Eric Russell
* @author Werner Keil
* @see UCUM
* @version 1.0, June 23, 2019
*/
public final class UCUMFormatParser {
private SymbolMap symbols;
public UCUMFormatParser(SymbolMap symbols, java.io.InputStream in) {
this(in);
this.symbols = symbols;
}
//
// Parser productions
//
final public Unit parseUnit() throws TokenException {
Unit u;
u = Term();
jj_consume_token(0);
{
return u;
}
}
final public Unit Term() throws TokenException {
Unit result = ONE;
Unit temp = ONE;
result = Component();
label_1:
while (true) {
switch ((jj_ntk == -1) ? jj_ntk() : jj_ntk) {
case DOT:
case SOLIDUS:
break;
default:
jj_la1[0] = jj_gen;
break label_1;
}
switch ((jj_ntk == -1) ? jj_ntk() : jj_ntk) {
case DOT:
jj_consume_token(DOT);
temp = Component();
result = result.multiply(temp);
break;
case SOLIDUS:
jj_consume_token(SOLIDUS);
temp = Component();
result = result.divide(temp);
break;
default:
jj_la1[1] = jj_gen;
jj_consume_token(-1);
throw new TokenException();
}
}
{
return result;
}
}
final public Unit Component() throws TokenException {
Unit result = (AbstractUnit) ONE;
Token token = null;
if (jj_2_1(2147483647)) {
result = Annotatable();
token = jj_consume_token(ANNOTATION);
{
return ((AbstractUnit)result).annotate(token.image.substring(1, token.image.length() - 1));
}
} else {
switch ((jj_ntk == -1) ? jj_ntk() : jj_ntk) {
case ATOM:
result = Annotatable(); {
return result;
}
case ANNOTATION:
token = jj_consume_token(ANNOTATION); {
return ((AbstractUnit)result).annotate(token.image.substring(1, token.image.length() - 1));
}
case FACTOR:
token = jj_consume_token(FACTOR);
long factor = Long.parseLong(token.image); {
return result.multiply(factor);
}
case SOLIDUS:
jj_consume_token(SOLIDUS);
result = Component(); {
return ONE.divide(result);
}
case 14:
jj_consume_token(14);
result = Term();
jj_consume_token(15); {
return result;
}
default:
jj_la1[2] = jj_gen;
jj_consume_token(-1);
throw new TokenException();
}
}
}
final public Unit Annotatable() throws TokenException {
Unit result = ONE;
Token token1 = null;
Token token2 = null;
if (jj_2_2(2147483647)) {
result = SimpleUnit();
switch ((jj_ntk == -1) ? jj_ntk() : jj_ntk) {
case SIGN:
token1 = jj_consume_token(SIGN);
break;
default:
jj_la1[3] = jj_gen;
}
token2 = jj_consume_token(FACTOR);
int exponent = Integer.parseInt(token2.image);
if ((token1 != null) && token1.image.equals("-")) {
{
return result.pow(-exponent);
}
} else {
{
return result.pow(exponent);
}
}
} else {
switch ((jj_ntk == -1) ? jj_ntk() : jj_ntk) {
case ATOM:
result = SimpleUnit(); {
return result;
}
default:
jj_la1[4] = jj_gen;
jj_consume_token(-1);
throw new TokenException();
}
}
}
final public Unit SimpleUnit() throws TokenException {
Token token = null;
token = jj_consume_token(ATOM);
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;
}
}
}
private boolean jj_2_1(int xla) {
jj_la = xla;
jj_lastpos = jj_scanpos = token;
try {
return !jj_3_1();
} catch (LookaheadSuccess ls) {
return true;
} finally {
jj_save(0, xla);
}
}
private boolean jj_2_2(int xla) {
jj_la = xla;
jj_lastpos = jj_scanpos = token;
try {
return !jj_3_2();
} catch (LookaheadSuccess ls) {
return true;
} finally {
jj_save(1, xla);
}
}
private boolean jj_3_1() {
return jj_3R_2() || jj_scan_token(ANNOTATION);
}
private boolean jj_3R_5() {
return jj_3R_3();
}
private boolean jj_3R_4() {
if (jj_3R_3())
return true;
Token xsp;
xsp = jj_scanpos;
if (jj_scan_token(10))
jj_scanpos = xsp;
return jj_scan_token(FACTOR);
}
private boolean jj_3_2() {
if (jj_3R_3())
return true;
Token xsp;
xsp = jj_scanpos;
if (jj_scan_token(10))
jj_scanpos = xsp;
return jj_scan_token(FACTOR);
}
private boolean jj_3R_3() {
return jj_scan_token(ATOM);
}
private boolean jj_3R_2() {
Token xsp;
xsp = jj_scanpos;
if (jj_3R_4()) {
jj_scanpos = xsp;
if (jj_3R_5())
return true;
}
return false;
}
/** Generated Token Manager. */
public UCUMTokenManager token_source;
UCUMCharStream jj_input_stream;
/** Current token. */
public Token token;
/** Next token. */
public Token jj_nt;
private int jj_ntk;
private Token jj_scanpos, jj_lastpos;
private int jj_la;
private int jj_gen;
final private int[] jj_la1 = new int[5];
static private int[] jj_la1_0;
static {
jj_la1_init_0();
}
private static void jj_la1_init_0() {
jj_la1_0 = new int[]{0x1800, 0x1800, 0x7300, 0x400, 0x2000,};
}
final private JJCalls[] jj_2_rtns = new JJCalls[2];
private boolean jj_rescan = false;
private int jj_gc = 0;
/** Constructor with InputStream. */
public UCUMFormatParser(java.io.InputStream stream) {
this(stream, null);
}
/** Constructor with InputStream and supplied encoding */
public UCUMFormatParser(java.io.InputStream stream, String encoding) {
try {
jj_input_stream = new UCUMCharStream(stream, encoding, 1, 1);
} catch (java.io.UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
token_source = new UCUMTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 5; i++) {
jj_la1[i] = -1;
}
for (int i = 0; i < jj_2_rtns.length; i++) {
jj_2_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 {
jj_input_stream.ReInit(stream, encoding, 1, 1);
} catch (java.io.UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 5; i++) {
jj_la1[i] = -1;
}
for (int i = 0; i < jj_2_rtns.length; i++) {
jj_2_rtns[i] = new JJCalls();
}
}
/** Constructor. */
public UCUMFormatParser(java.io.Reader stream) {
jj_input_stream = new UCUMCharStream(stream, 1, 1);
token_source = new UCUMTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 5; i++) {
jj_la1[i] = -1;
}
for (int i = 0; i < jj_2_rtns.length; i++) {
jj_2_rtns[i] = new JJCalls();
}
}
/** Reinitialise. */
public void ReInit(java.io.Reader stream) {
jj_input_stream.ReInit(stream, 1, 1);
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 5; i++) {
jj_la1[i] = -1;
}
for (int i = 0; i < jj_2_rtns.length; i++) {
jj_2_rtns[i] = new JJCalls();
}
}
/** Constructor with generated Token Manager. */
public UCUMFormatParser(UCUMTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 5; i++) {
jj_la1[i] = -1;
}
for (int i = 0; i < jj_2_rtns.length; i++) {
jj_2_rtns[i] = new JJCalls();
}
}
/** Reinitialise. */
public void ReInit(UCUMTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 5; i++) {
jj_la1[i] = -1;
}
for (int i = 0; i < jj_2_rtns.length; i++) {
jj_2_rtns[i] = new JJCalls();
}
}
private Token jj_consume_token(int kind) throws TokenException {
Token oldToken;
if ((oldToken = token).next != null)
token = token.next;
else
token = token.next = token_source.getNextToken();
jj_ntk = -1;
if (token.kind == kind) {
jj_gen++;
if (++jj_gc > 100) {
jj_gc = 0;
for (JJCalls jj_2_rtn : jj_2_rtns) {
JJCalls c = jj_2_rtn;
while (c != null) {
if (c.gen < jj_gen)
c.first = null;
c = c.next;
}
}
}
return token;
}
token = oldToken;
jj_kind = kind;
throw raiseTokenException();
}
static private final class LookaheadSuccess extends java.lang.Error {
/**
*
*/
private static final long serialVersionUID = -1747326813448392305L;
}
final private LookaheadSuccess jj_ls = new LookaheadSuccess();
private boolean jj_scan_token(int kind) {
if (jj_scanpos == jj_lastpos) {
jj_la--;
if (jj_scanpos.next == null) {
jj_lastpos = jj_scanpos = jj_scanpos.next = token_source.getNextToken();
} else {
jj_lastpos = jj_scanpos = jj_scanpos.next;
}
} else {
jj_scanpos = jj_scanpos.next;
}
if (jj_rescan) {
int i = 0;
Token tok = token;
while (tok != null && tok != jj_scanpos) {
i++;
tok = tok.next;
}
if (tok != null)
jj_add_error_token(kind, i);
}
if (jj_scanpos.kind != kind)
return true;
if (jj_la == 0 && jj_scanpos == jj_lastpos)
throw jj_ls;
return false;
}
/** Get the next Token. */
final public Token getNextToken() {
if (token.next != null)
token = token.next;
else
token = token.next = token_source.getNextToken();
jj_ntk = -1;
jj_gen++;
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 = token_source.getNextToken();
}
return t;
}
private int jj_ntk() {
if ((jj_nt = token.next) == null)
return (jj_ntk = (token.next = token_source.getNextToken()).kind);
else
return (jj_ntk = jj_nt.kind);
}
private java.util.List jj_expentries = new java.util.ArrayList<>();
private int[] jj_expentry;
private int jj_kind = -1;
private int[] jj_lasttokens = new int[100];
private int jj_endpos;
private void jj_add_error_token(int kind, int pos) {
if (pos >= 100)
return;
if (pos == jj_endpos + 1) {
jj_lasttokens[jj_endpos++] = kind;
} else if (jj_endpos != 0) {
jj_expentry = new int[jj_endpos];
System.arraycopy(jj_lasttokens, 0, jj_expentry, 0, jj_endpos);
jj_entries_loop:
for (int[] jj_expentry1 : jj_expentries) {
if (jj_expentry1.length == jj_expentry.length) {
for (int i = 0; i < jj_expentry.length; i++) {
if (jj_expentry1[i] != jj_expentry[i]) {
continue jj_entries_loop;
}
}
jj_expentries.add(jj_expentry);
break;
}
}
if (pos != 0)
jj_lasttokens[(jj_endpos = pos) - 1] = kind;
}
}
/** Generate TokenException. */
TokenException raiseTokenException() {
jj_expentries.clear();
boolean[] la1tokens = new boolean[16];
if (jj_kind >= 0) {
la1tokens[jj_kind] = true;
jj_kind = -1;
}
for (int i = 0; i < 5; i++) {
if (jj_la1[i] == jj_gen) {
for (int j = 0; j < 32; j++) {
if ((jj_la1_0[i] & (1 << j)) != 0) {
la1tokens[j] = true;
}
}
}
}
for (int i = 0; i < 16; i++) {
if (la1tokens[i]) {
jj_expentry = new int[1];
jj_expentry[0] = i;
jj_expentries.add(jj_expentry);
}
}
jj_endpos = 0;
jj_rescan_token();
jj_add_error_token(0, 0);
int[][] exptokseq = new int[jj_expentries.size()][];
for (int i = 0; i < jj_expentries.size(); i++) {
exptokseq[i] = jj_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() {
jj_rescan = true;
for (int i = 0; i < 2; i++) {
try {
JJCalls p = jj_2_rtns[i];
do {
if (p.gen > jj_gen) {
jj_la = p.arg;
jj_lastpos = jj_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) {
}
}
jj_rescan = false;
}
private void jj_save(int index, int xla) {
JJCalls p = jj_2_rtns[index];
while (p.gen > jj_gen) {
if (p.next == null) {
p = p.next = new JJCalls();
break;
}
p = p.next;
}
p.gen = jj_gen + xla - jj_la;
p.first = token;
p.arg = xla;
}
static final class JJCalls {
int gen;
Token first;
int arg;
JJCalls next;
}
}