| Method from org.apache.xerces.impl.xpath.regex.RangeToken Detail: |
|---|
 protected void addRange(int start,
int end) {
this.icaseCache = null;
//System.err.println("Token#addRange(): "+start+" "+end);
int r1, r2;
if (start < = end) {
r1 = start;
r2 = end;
} else {
r1 = end;
r2 = start;
}
int pos = 0;
if (this.ranges == null) {
this.ranges = new int[2];
this.ranges[0] = r1;
this.ranges[1] = r2;
this.setSorted(true);
} else {
pos = this.ranges.length;
if (this.ranges[pos-1]+1 == r1) {
this.ranges[pos-1] = r2;
return;
}
int[] temp = new int[pos+2];
System.arraycopy(this.ranges, 0, temp, 0, pos);
this.ranges = temp;
if (this.ranges[pos-1] >= r1)
this.setSorted(false);
this.ranges[pos++] = r1;
this.ranges[pos] = r2;
if (!this.sorted)
this.sortRanges();
}
}
|
protected void compactRanges() {
boolean DEBUG = false;
if (this.ranges == null || this.ranges.length < = 2)
return;
if (this.isCompacted())
return;
int base = 0; // Index of writing point
int target = 0; // Index of processing point
while (target < this.ranges.length) {
if (base != target) {
this.ranges[base] = this.ranges[target++];
this.ranges[base+1] = this.ranges[target++];
} else
target += 2;
int baseend = this.ranges[base+1];
while (target < this.ranges.length) {
if (baseend+1 < this.ranges[target])
break;
if (baseend+1 == this.ranges[target]) {
if (DEBUG)
System.err.println("Token#compactRanges(): Compaction: ["+this.ranges[base]
+", "+this.ranges[base+1]
+"], ["+this.ranges[target]
+", "+this.ranges[target+1]
+"] - > ["+this.ranges[base]
+", "+this.ranges[target+1]
+"]");
this.ranges[base+1] = this.ranges[target+1];
baseend = this.ranges[base+1];
target += 2;
} else if (baseend >= this.ranges[target+1]) {
if (DEBUG)
System.err.println("Token#compactRanges(): Compaction: ["+this.ranges[base]
+", "+this.ranges[base+1]
+"], ["+this.ranges[target]
+", "+this.ranges[target+1]
+"] - > ["+this.ranges[base]
+", "+this.ranges[base+1]
+"]");
target += 2;
} else if (baseend < this.ranges[target+1]) {
if (DEBUG)
System.err.println("Token#compactRanges(): Compaction: ["+this.ranges[base]
+", "+this.ranges[base+1]
+"], ["+this.ranges[target]
+", "+this.ranges[target+1]
+"] - > ["+this.ranges[base]
+", "+this.ranges[target+1]
+"]");
this.ranges[base+1] = this.ranges[target+1];
baseend = this.ranges[base+1];
target += 2;
} else {
throw new RuntimeException("Token#compactRanges(): Internel Error: ["
+this.ranges[base]
+","+this.ranges[base+1]
+"] ["+this.ranges[target]
+","+this.ranges[target+1]+"]");
}
} // while
base += 2;
}
if (base != this.ranges.length) {
int[] result = new int[base];
System.arraycopy(this.ranges, 0, result, 0, base);
this.ranges = result;
}
this.setCompacted();
} |
static Token complementRanges(Token token) {
if (token.type != RANGE && token.type != NRANGE)
throw new IllegalArgumentException("Token#complementRanges(): must be RANGE: "+token.type);
RangeToken tok = (RangeToken)token;
tok.sortRanges();
tok.compactRanges();
int len = tok.ranges.length+2;
if (tok.ranges[0] == 0)
len -= 2;
int last = tok.ranges[tok.ranges.length-1];
if (last == UTF16_MAX)
len -= 2;
RangeToken ret = Token.createRange();
ret.ranges = new int[len];
int wp = 0;
if (tok.ranges[0] > 0) {
ret.ranges[wp++] = 0;
ret.ranges[wp++] = tok.ranges[0]-1;
}
for (int i = 1; i < tok.ranges.length-2; i += 2) {
ret.ranges[wp++] = tok.ranges[i]+1;
ret.ranges[wp++] = tok.ranges[i+1]-1;
}
if (last != UTF16_MAX) {
ret.ranges[wp++] = last+1;
ret.ranges[wp] = UTF16_MAX;
}
ret.setCompacted();
return ret;
} for RANGE: Creates complement.
for NRANGE: Creates the same meaning RANGE. |
void dumpRanges() {
System.err.print("RANGE: ");
if (this.ranges == null)
System.err.println(" NULL");
for (int i = 0; i < this.ranges.length; i += 2) {
System.err.print("["+this.ranges[i]+","+this.ranges[i+1]+"] ");
}
System.err.println("");
} |
synchronized RangeToken getCaseInsensitiveToken() {
if (this.icaseCache != null)
return this.icaseCache;
RangeToken uppers = this.type == Token.RANGE ? Token.createRange() : Token.createNRange();
for (int i = 0; i < this.ranges.length; i += 2) {
for (int ch = this.ranges[i]; ch < = this.ranges[i+1]; ch ++) {
if (ch > 0xffff)
uppers.addRange(ch, ch);
else {
char uch = Character.toUpperCase((char)ch);
uppers.addRange(uch, uch);
}
}
}
RangeToken lowers = this.type == Token.RANGE ? Token.createRange() : Token.createNRange();
for (int i = 0; i < uppers.ranges.length; i += 2) {
for (int ch = uppers.ranges[i]; ch < = uppers.ranges[i+1]; ch ++) {
if (ch > 0xffff)
lowers.addRange(ch, ch);
else {
char uch = Character.toUpperCase((char)ch);
lowers.addRange(uch, uch);
}
}
}
lowers.mergeRanges(uppers);
lowers.mergeRanges(this);
lowers.compactRanges();
this.icaseCache = lowers;
return lowers;
} |
protected void intersectRanges(Token token) {
RangeToken tok = (RangeToken)token;
if (tok.ranges == null || this.ranges == null)
return;
this.icaseCache = null;
this.sortRanges();
this.compactRanges();
tok.sortRanges();
tok.compactRanges();
int[] result = new int[this.ranges.length+tok.ranges.length];
int wp = 0, src1 = 0, src2 = 0;
while (src1 < this.ranges.length && src2 < tok.ranges.length) {
int src1begin = this.ranges[src1];
int src1end = this.ranges[src1+1];
int src2begin = tok.ranges[src2];
int src2end = tok.ranges[src2+1];
if (src1end < src2begin) { // Not overlapped
// src1: o-----o
// src2: o-----o
// res: empty
// Reuse src2
src1 += 2;
} else if (src1end >= src2begin
&& src1begin < = src2end) { // Overlapped
// src1: o--------o
// src2: o----o
// src2: o----o
// src2: o----o
// src2: o------------o
if (src2begin < = src1begin && src1end < = src2end) {
// src1: o--------o
// src2: o------------o
// res: o--------o
// Reuse src2
result[wp++] = src1begin;
result[wp++] = src1end;
src1 += 2;
} else if (src2begin < = src1begin) {
// src1: o--------o
// src2: o----o
// res: o--o
// Reuse the rest of src1
result[wp++] = src1begin;
result[wp++] = src2end;
this.ranges[src1] = src2end+1;
src2 += 2;
} else if (src1end < = src2end) {
// src1: o--------o
// src2: o----o
// res: o--o
// Reuse src2
result[wp++] = src2begin;
result[wp++] = src1end;
src1 += 2;
} else {
// src1: o--------o
// src2: o----o
// res: o----o
// Reuse the rest of src1
result[wp++] = src2begin;
result[wp++] = src2end;
this.ranges[src1] = src2end+1;
}
} else if (src2end < src1begin) {
// Not overlapped
// src1: o-----o
// src2: o----o
src2 += 2;
} else {
throw new RuntimeException("Token#intersectRanges(): Internal Error: ["
+this.ranges[src1]
+","+this.ranges[src1+1]
+"] & ["+tok.ranges[src2]
+","+tok.ranges[src2+1]
+"]");
}
}
while (src1 < this.ranges.length) {
result[wp++] = this.ranges[src1++];
result[wp++] = this.ranges[src1++];
}
this.ranges = new int[wp];
System.arraycopy(result, 0, this.ranges, 0, wp);
// this.ranges is sorted and compacted.
} |
boolean match(int ch) {
if (this.map == null) this.createMap();
boolean ret;
if (this.type == RANGE) {
if (ch < MAPSIZE)
return (this.map[ch/32] & (1< < (ch&0x1f))) != 0;
ret = false;
for (int i = this.nonMapIndex; i < this.ranges.length; i += 2) {
if (this.ranges[i] < = ch && ch < = this.ranges[i+1])
return true;
}
} else {
if (ch < MAPSIZE)
return (this.map[ch/32] & (1< < (ch&0x1f))) == 0;
ret = true;
for (int i = this.nonMapIndex; i < this.ranges.length; i += 2) {
if (this.ranges[i] < = ch && ch < = this.ranges[i+1])
return false;
}
}
return ret;
} |
protected void mergeRanges(Token token) {
RangeToken tok = (RangeToken)token;
this.sortRanges();
tok.sortRanges();
if (tok.ranges == null)
return;
this.icaseCache = null;
this.setSorted(true);
if (this.ranges == null) {
this.ranges = new int[tok.ranges.length];
System.arraycopy(tok.ranges, 0, this.ranges, 0, tok.ranges.length);
return;
}
int[] result = new int[this.ranges.length+tok.ranges.length];
for (int i = 0, j = 0, k = 0; i < this.ranges.length || j < tok.ranges.length;) {
if (i >= this.ranges.length) {
result[k++] = tok.ranges[j++];
result[k++] = tok.ranges[j++];
} else if (j >= tok.ranges.length) {
result[k++] = this.ranges[i++];
result[k++] = this.ranges[i++];
} else if (tok.ranges[j] < this.ranges[i]
|| tok.ranges[j] == this.ranges[i] && tok.ranges[j+1] < this.ranges[i+1]) {
result[k++] = tok.ranges[j++];
result[k++] = tok.ranges[j++];
} else {
result[k++] = this.ranges[i++];
result[k++] = this.ranges[i++];
}
}
this.ranges = result;
} |
protected void sortRanges() {
if (this.isSorted())
return;
if (this.ranges == null)
return;
//System.err.println("Do sorting: "+this.ranges.length);
// Bubble sort
// Why? -- In many cases,
// this.ranges has few elements.
for (int i = this.ranges.length-4; i >= 0; i -= 2) {
for (int j = 0; j < = i; j += 2) {
if (this.ranges[j] > this.ranges[j+2]
|| this.ranges[j] == this.ranges[j+2] && this.ranges[j+1] > this.ranges[j+3]) {
int tmp;
tmp = this.ranges[j+2];
this.ranges[j+2] = this.ranges[j];
this.ranges[j] = tmp;
tmp = this.ranges[j+3];
this.ranges[j+3] = this.ranges[j+1];
this.ranges[j+1] = tmp;
}
}
}
this.setSorted(true);
} |
protected void subtractRanges(Token token) {
if (token.type == NRANGE) {
this.intersectRanges(token);
return;
}
RangeToken tok = (RangeToken)token;
if (tok.ranges == null || this.ranges == null)
return;
this.icaseCache = null;
this.sortRanges();
this.compactRanges();
tok.sortRanges();
tok.compactRanges();
//System.err.println("Token#substractRanges(): Entry: "+this.ranges.length+", "+tok.ranges.length);
int[] result = new int[this.ranges.length+tok.ranges.length];
int wp = 0, src = 0, sub = 0;
while (src < this.ranges.length && sub < tok.ranges.length) {
int srcbegin = this.ranges[src];
int srcend = this.ranges[src+1];
int subbegin = tok.ranges[sub];
int subend = tok.ranges[sub+1];
if (srcend < subbegin) { // Not overlapped
// src: o-----o
// sub: o-----o
// res: o-----o
// Reuse sub
result[wp++] = this.ranges[src++];
result[wp++] = this.ranges[src++];
} else if (srcend >= subbegin
&& srcbegin < = subend) { // Overlapped
// src: o--------o
// sub: o----o
// sub: o----o
// sub: o----o
// sub: o------------o
if (subbegin < = srcbegin && srcend < = subend) {
// src: o--------o
// sub: o------------o
// res: empty
// Reuse sub
src += 2;
} else if (subbegin < = srcbegin) {
// src: o--------o
// sub: o----o
// res: o-----o
// Reuse src(=res)
this.ranges[src] = subend+1;
sub += 2;
} else if (srcend < = subend) {
// src: o--------o
// sub: o----o
// res: o-----o
// Reuse sub
result[wp++] = srcbegin;
result[wp++] = subbegin-1;
src += 2;
} else {
// src: o--------o
// sub: o----o
// res: o-o o-o
// Reuse src(=right res)
result[wp++] = srcbegin;
result[wp++] = subbegin-1;
this.ranges[src] = subend+1;
sub += 2;
}
} else if (subend < srcbegin) {
// Not overlapped
// src: o-----o
// sub: o----o
sub += 2;
} else {
throw new RuntimeException("Token#subtractRanges(): Internal Error: ["+this.ranges[src]
+","+this.ranges[src+1]
+"] - ["+tok.ranges[sub]
+","+tok.ranges[sub+1]
+"]");
}
}
while (src < this.ranges.length) {
result[wp++] = this.ranges[src++];
result[wp++] = this.ranges[src++];
}
this.ranges = new int[wp];
System.arraycopy(result, 0, this.ranges, 0, wp);
// this.ranges is sorted and compacted.
} |
public String toString(int options) {
String ret;
if (this.type == RANGE) {
if (this == Token.token_dot)
ret = ".";
else if (this == Token.token_0to9)
ret = "\\d";
else if (this == Token.token_wordchars)
ret = "\\w";
else if (this == Token.token_spaces)
ret = "\\s";
else {
StringBuffer sb = new StringBuffer();
sb.append("[");
for (int i = 0; i < this.ranges.length; i += 2) {
if ((options & RegularExpression.SPECIAL_COMMA) != 0 && i > 0) sb.append(",");
if (this.ranges[i] == this.ranges[i+1]) {
sb.append(escapeCharInCharClass(this.ranges[i]));
} else {
sb.append(escapeCharInCharClass(this.ranges[i]));
sb.append((char)'-");
sb.append(escapeCharInCharClass(this.ranges[i+1]));
}
}
sb.append("]");
ret = sb.toString();
}
} else {
if (this == Token.token_not_0to9)
ret = "\\D";
else if (this == Token.token_not_wordchars)
ret = "\\W";
else if (this == Token.token_not_spaces)
ret = "\\S";
else {
StringBuffer sb = new StringBuffer();
sb.append("[^");
for (int i = 0; i < this.ranges.length; i += 2) {
if ((options & RegularExpression.SPECIAL_COMMA) != 0 && i > 0) sb.append(",");
if (this.ranges[i] == this.ranges[i+1]) {
sb.append(escapeCharInCharClass(this.ranges[i]));
} else {
sb.append(escapeCharInCharClass(this.ranges[i]));
sb.append('-");
sb.append(escapeCharInCharClass(this.ranges[i+1]));
}
}
sb.append("]");
ret = sb.toString();
}
}
return ret;
} |
org.apache.xerces.impl.xpath.regex.Token