1 | static Producer<S> javaTokC_noMLS_onReader(final BufferedReader r) {
|
2 | final class X implements Producer<S> {
|
3 | new StringBuilder buf; // stores from "i" |
4 | char c, d, e = 'x'; // just not '\0' |
5 | |
6 | *() {
|
7 | // fill c, d and e |
8 | nc(); |
9 | nc(); |
10 | nc(); |
11 | } |
12 | |
13 | // get next character(s) into c, d and e |
14 | void nc() ctex {
|
15 | c = d; |
16 | d = e; |
17 | if (e == '\0') ret; |
18 | int i = r.read(); |
19 | e = i < 0 ? '\0' |
20 | : i == '\0' ? '_' // shouldn't happen anymore |
21 | : (char) i; |
22 | } |
23 | |
24 | void ncSave() {
|
25 | if (c != '\0') {
|
26 | buf.append(c); |
27 | nc(); |
28 | } |
29 | } |
30 | |
31 | public S next() {
|
32 | // scan for whitespace |
33 | while (c != '\0') {
|
34 | if (c == ' ' || c == '\t' || c == '\r' || c == '\n') |
35 | nc(); |
36 | else if (c == '/' && d == '*') {
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37 | do nc(); while (c != '\0' && !(c == '*' && d == '/')); |
38 | nc(); nc(); |
39 | } else if (c == '/' && d == '/') {
|
40 | do nc(); while (c != '\0' && "\r\n".indexOf(c) < 0); |
41 | } else |
42 | break; |
43 | } |
44 | |
45 | if (c == '\0') ret null; |
46 | |
47 | // scan for non-whitespace |
48 | if (c == '\'' || c == '"') {
|
49 | char opener = c; |
50 | ncSave(); |
51 | while (c != '\0') {
|
52 | if (c == opener || c == '\n') { // end at \n to not propagate unclosed string literal errors
|
53 | ncSave(); |
54 | break; |
55 | } else if (c == '\\') {
|
56 | ncSave(); |
57 | ncSave(); |
58 | } else |
59 | ncSave(); |
60 | } |
61 | } else if (Character.isJavaIdentifierStart(c)) |
62 | do ncSave(); while (Character.isJavaIdentifierPart(c) || c == '\''); // for stuff like "don't" |
63 | else if (Character.isDigit(c)) {
|
64 | do ncSave(); while (Character.isDigit(c)); |
65 | if (c == 'L') ncSave(); // Long constants like 1L |
66 | } else |
67 | ncSave(); |
68 | |
69 | S t = buf.toString(); |
70 | buf.setLength(0); |
71 | ret t; |
72 | } |
73 | } |
74 | |
75 | ret new X; |
76 | } |
Began life as a copy of #1005981
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| Snippet ID: | #1008762 |
| Snippet name: | javaTokC_noMLS_onReader - javaTokC as Producer on BufferedReader, no multi-line strings |
| Eternal ID of this version: | #1008762/3 |
| Text MD5: | 0de3d66eb9b48d4672cb1ef671229e3c |
| Author: | stefan |
| Category: | javax / parsing |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2018-06-02 23:57:02 |
| Source code size: | 2023 bytes / 76 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 578 / 648 |
| Version history: | 2 change(s) |
| Referenced in: | [show references] |