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1 | srecord javaTok_vstack(S s) implements VStack.Computable<LS> {
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2 | new ArrayList<S> tok; |
3 | int l, i; |
4 | int label; // where are we at in routine |
5 | |
6 | void goTo(int label) { this.label = label; }
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7 | |
8 | public void step(VStack stack, O subComputationResult) {
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9 | switch (label) {
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10 | case 0: |
11 | l = s == null ? 0 : s.length(); |
12 | |
13 | case 1: |
14 | if (i >= l) ret with goTo(2); |
15 | |
16 | int j = i; |
17 | char c, d; |
18 | |
19 | // scan for whitespace |
20 | while (j < l) {
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21 | c = s.charAt(j); |
22 | d = j+1 >= l ? '\0' : s.charAt(j+1); |
23 | if (c == ' ' || c == '\t' || c == '\r' || c == '\n') |
24 | ++j; |
25 | else if (c == '/' && d == '*') {
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26 | do ++j; while (j < l && !regionMatches(s, j, "*/")); |
27 | j = Math.min(j+2, l); |
28 | } else if (c == '/' && d == '/') {
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29 | do ++j; while (j < l && "\r\n".indexOf(s.charAt(j)) < 0); |
30 | } else |
31 | break; |
32 | } |
33 | |
34 | tok.add(javaTok_substringN(s, i, j)); |
35 | i = j; |
36 | if (i >= l) break; |
37 | c = s.charAt(i); |
38 | d = i+1 >= l ? '\0' : s.charAt(i+1); |
39 | |
40 | // scan for non-whitespace |
41 | |
42 | // Special JavaX syntax: 'identifier |
43 | if (c == '\'' && Character.isJavaIdentifierStart(d) && i+2 < l && "'\\".indexOf(s.charAt(i+2)) < 0) {
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44 | j += 2; |
45 | while (j < l && Character.isJavaIdentifierPart(s.charAt(j))) |
46 | ++j; |
47 | } else if (c == '\'' || c == '"') {
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48 | char opener = c; |
49 | ++j; |
50 | while (j < l) {
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51 | int c2 = s.charAt(j); |
52 | if (c2 == opener || c2 == '\n' && opener == '\'') { // allow multi-line strings, but not for '
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53 | ++j; |
54 | break; |
55 | } else if (c2 == '\\' && j+1 < l) |
56 | j += 2; |
57 | else |
58 | ++j; |
59 | } |
60 | } else if (Character.isJavaIdentifierStart(c)) |
61 | do ++j; while (j < l && (Character.isJavaIdentifierPart(s.charAt(j)) || s.charAt(j) == '\'')); // for stuff like "don't" |
62 | else if (Character.isDigit(c)) {
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63 | do ++j; while (j < l && Character.isDigit(s.charAt(j))); |
64 | if (j < l && s.charAt(j) == 'L') ++j; // Long constants like 1L |
65 | } else if (c == '[' && d == '[') {
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66 | do ++j; while (j < l && !regionMatches(s, j, "]]")); |
67 | j = Math.min(j+2, l); |
68 | } else if (c == '[' && d == '=' && i+2 < l && s.charAt(i+2) == '[') {
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69 | do ++j; while (j+2 < l && !regionMatches(s, j, "]=]")); |
70 | j = Math.min(j+3, l); |
71 | } else |
72 | ++j; |
73 | |
74 | tok.add(javaTok_substringC(s, i, j)); |
75 | i = j; |
76 | ret with goTo(1); |
77 | |
78 | case 2: |
79 | if ((tok.size() & 1) == 0) tok.add("");
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80 | stack._return(tok); |
81 | } |
82 | } |
83 | } |
Began life as a copy of #1000688
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| Snippet ID: | #1030392 |
| Snippet name: | javaTok_vstack - javaTok for VStack [OK, only outer loop virtualized] |
| Eternal ID of this version: | #1030392/8 |
| Text MD5: | 3a23d597e756eb8d149fa4857b2a1f09 |
| Transpilation MD5: | 9721255d062ff1f5a8a7742217d71f1f |
| Author: | stefan |
| Category: | javax / tokenizing |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2020-12-11 01:35:15 |
| Source code size: | 2842 bytes / 83 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 156 / 380 |
| Version history: | 7 change(s) |
| Referenced in: | [show references] |