зеркало из https://github.com/mozilla/gecko-dev.git
More RegExp back reference specification mucking about.
This commit is contained in:
rogerl%netscape.com
Родитель
7a7398396f
Коммит
6e901af5e4
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@ -1130,67 +1130,24 @@ public class NativeRegExp extends ScriptableObject implements Function {
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}
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}
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else {
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boolean twodigitescape = false;
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if (index < (source.length - 1)
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&& source[index + 1] >= '0'
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&& source[index + 1] <= '9') {
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if (c >= '0' && c <= '3') {
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if (source[index + 1] <= '7') {
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/* ZeroToThree OctalDigit */
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if (index < (source.length - 2)
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&& source[index + 2] >= '0'
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&& source[index + 2] <= '9') {
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ren = new RENode(state, REOP_FLAT1, null);
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c = (char)(64 * unDigit(c)
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+ 8 * unDigit(source[++index])
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+ unDigit(source[++index]));
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}
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else
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/*ZeroToThree OctalDigit lookahead != OctalDigit */
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twodigitescape = true;
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}
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else /* ZeroToThree EightOrNine */
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twodigitescape = true;
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}
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else { /* FourToNine DecimalDigit */
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twodigitescape = true;
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}
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if (twodigitescape) {
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num = 10 * unDigit(c) + unDigit(source[index + 1]);
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if (num >= 10 && num <= state.parenCount) {
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index++;
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ren = new RENode(state, REOP_BACKREF, null);
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ren.num = num - 1;/* \1 is numbered 0, etc. */
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/* Avoid common chr- and flags-setting
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code after switch. */
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ren.flags = RENode.NONEMPTY;
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skipCommon = true;
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}
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if (c > '7' || source[index + 1] > '7') {
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throw NativeGlobal.constructError(
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state.cx, "SyntaxError",
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ScriptRuntime.getMessage(
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"msg.invalid.backref", null),
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state.scope);
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}
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ren = new RENode(state, REOP_FLAT1, null);
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c = (char)(8 * unDigit(c) + unDigit(source[++index]));
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}
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if (c == '0') {
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ren = new RENode(state, REOP_FLAT1, null);
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c = 0;
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}
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else { /* DecimalDigit lookahead != DecimalDigit */
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if (c == '0') {
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ren = new RENode(state, REOP_FLAT1, null);
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c = 0;
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}
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else {
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num = (char)unDigit(c);
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ren = new RENode(state, REOP_BACKREF, null);
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ren.num = num - 1; /* \1 is numbered 0, etc. */
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/* Avoid common chr- and flags-setting
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code after switch. */
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ren.flags = RENode.NONEMPTY;
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skipCommon = true;
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else {
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num = unDigit(c);
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len = 1;
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while (++index < source.length
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&& isDigit(c = source[index])) {
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num = 10 * num + unDigit(c);
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len++;
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}
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ren = new RENode(state, REOP_BACKREF, null);
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ren.num = num - 1; /* \1 is numbered 0, etc. */
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/* Avoid common chr- and flags-setting
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code after switch. */
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ren.flags = RENode.NONEMPTY;
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skipCommon = true;
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}
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}
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break;
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@ -1130,67 +1130,24 @@ public class NativeRegExp extends ScriptableObject implements Function {
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}
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}
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else {
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boolean twodigitescape = false;
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if (index < (source.length - 1)
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&& source[index + 1] >= '0'
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&& source[index + 1] <= '9') {
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if (c >= '0' && c <= '3') {
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if (source[index + 1] <= '7') {
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/* ZeroToThree OctalDigit */
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if (index < (source.length - 2)
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&& source[index + 2] >= '0'
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&& source[index + 2] <= '9') {
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ren = new RENode(state, REOP_FLAT1, null);
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c = (char)(64 * unDigit(c)
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+ 8 * unDigit(source[++index])
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+ unDigit(source[++index]));
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}
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else
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/*ZeroToThree OctalDigit lookahead != OctalDigit */
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twodigitescape = true;
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}
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else /* ZeroToThree EightOrNine */
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twodigitescape = true;
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}
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else { /* FourToNine DecimalDigit */
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twodigitescape = true;
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}
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if (twodigitescape) {
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num = 10 * unDigit(c) + unDigit(source[index + 1]);
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if (num >= 10 && num <= state.parenCount) {
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index++;
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ren = new RENode(state, REOP_BACKREF, null);
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ren.num = num - 1;/* \1 is numbered 0, etc. */
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/* Avoid common chr- and flags-setting
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code after switch. */
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ren.flags = RENode.NONEMPTY;
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skipCommon = true;
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}
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if (c > '7' || source[index + 1] > '7') {
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throw NativeGlobal.constructError(
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state.cx, "SyntaxError",
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ScriptRuntime.getMessage(
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"msg.invalid.backref", null),
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state.scope);
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}
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ren = new RENode(state, REOP_FLAT1, null);
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c = (char)(8 * unDigit(c) + unDigit(source[++index]));
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}
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if (c == '0') {
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ren = new RENode(state, REOP_FLAT1, null);
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c = 0;
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}
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else { /* DecimalDigit lookahead != DecimalDigit */
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if (c == '0') {
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ren = new RENode(state, REOP_FLAT1, null);
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c = 0;
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}
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else {
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num = (char)unDigit(c);
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ren = new RENode(state, REOP_BACKREF, null);
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ren.num = num - 1; /* \1 is numbered 0, etc. */
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/* Avoid common chr- and flags-setting
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code after switch. */
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ren.flags = RENode.NONEMPTY;
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skipCommon = true;
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else {
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num = unDigit(c);
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len = 1;
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while (++index < source.length
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&& isDigit(c = source[index])) {
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num = 10 * num + unDigit(c);
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len++;
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}
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ren = new RENode(state, REOP_BACKREF, null);
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ren.num = num - 1; /* \1 is numbered 0, etc. */
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/* Avoid common chr- and flags-setting
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code after switch. */
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ren.flags = RENode.NONEMPTY;
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skipCommon = true;
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}
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}
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break;
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