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Changes debug information format for more compact size of bytecode CFG

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This commit is contained in:
konsoletyper 2014-08-16 10:48:23 +04:00
parent 95f532aca6
commit 497d2424bb
2 changed files with 32 additions and 28 deletions
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46
teavm-core/src/main/java/org/teavm/debugging/DebugInformationReader.java
View File

@ -93,35 +93,35 @@ class DebugInformationReader {
}
private DebugInformation.CFG readCFG(int index) throws IOException {
int[] offsets = new int[readUnsignedNumber() + 1];
IntegerArray lines = new IntegerArray(1);
IntegerArray files = new IntegerArray(1);
for (int i = 0; i < offsets.length - 1; ++i) {
offsets[i] = lines.size();
IntegerArray offsets = new IntegerArray(1);
int[] lines = new int[readUnsignedNumber()];
int[] files = new int[lines.length];
int i = 0;
int line = 0;
offsets.add(0);
while (i < lines.length) {
line += readUnsignedNumber();
int sz = readUnsignedNumber();
if (sz == 0) {
continue;
lines[i] = -1;
files[i++] = -1;
} else if (sz == 1) {
lines.add(-1);
files.add(-1);
} else if (sz == 2) {
lines.add(i + 1);
files.add(index);
} else {
sz -= 2;
int last = i;
for (int j = 0; j < sz; ++j) {
last += readNumber();
lines.add(last);
files.add(index + readNumber());
}
lines[i] = line + 1;
files[i++] = index;
}
sz -= 1;
int last = line;
for (int j = 0; j < sz; ++j) {
last += readNumber();
lines[i] = last;
files[i++] = index + readNumber();
}
offsets.add(i);
}
offsets[offsets.length - 1] = lines.size();
DebugInformation.CFG cfg = new DebugInformation.CFG();
cfg.offsets = offsets;
cfg.lines = lines.getAll();
cfg.files = files.getAll();
cfg.offsets = offsets.getAll();
cfg.lines = lines;
cfg.files = files;
return cfg;
}

14
teavm-core/src/main/java/org/teavm/debugging/DebugInformationWriter.java
View File

@ -147,18 +147,21 @@ class DebugInformationWriter {
}
private void writeCFG(DebugInformation.CFG mapping, int fileIndex) throws IOException {
writeUnsignedNumber(mapping.offsets.length - 1);
writeUnsignedNumber(mapping.lines.length);
int lastLine = 0;
for (int i = 0; i < mapping.offsets.length - 1; ++i) {
int start = mapping.offsets[i];
int sz = mapping.offsets[i + 1] - start;
if (sz == 0) {
continue;
}
writeUnsignedNumber(i - lastLine);
if (sz == 1 && mapping.lines[start] == -1) {
writeUnsignedNumber(0);
} else if (sz == 1 && mapping.lines[start] == -1) {
writeUnsignedNumber(1);
} else if (sz == 1 && mapping.lines[start] == i + 1 && mapping.files[start] == fileIndex) {
writeUnsignedNumber(2);
writeUnsignedNumber(1);
} else {
writeUnsignedNumber(2 + sz);
writeUnsignedNumber(1 + sz);
int[] lines = Arrays.copyOfRange(mapping.lines, start, start + sz);
int[] files = Arrays.copyOfRange(mapping.files, start, start + sz);
int last = i;
@ -169,6 +172,7 @@ class DebugInformationWriter {
last = succ;
}
}
lastLine = i;
}
}