// Compute size of LineNumberTable
u2 JvmtiClassFileReconstituter::line_number_table_entries(methodHandle method) {
// The line number table is compressed so we don't know how big it is until decompressed.
// Decompression is really fast so we just do it twice.
u2 num_entries = 0;
CompressedLineNumberReadStream stream(method->compressed_linenumber_table());
while (stream.read_pair()) {
num_entries++;
}
return num_entries;
}
// Write LineNumberTable attribute
// JVMSpec| LineNumberTable_attribute {
// JVMSpec| u2 attribute_name_index;
// JVMSpec| u4 attribute_length;
// JVMSpec| u2 line_number_table_length;
// JVMSpec| { u2 start_pc;
// JVMSpec| u2 line_number;
// JVMSpec| } line_number_table[line_number_table_length];
// JVMSpec| }
void JvmtiClassFileReconstituter::write_line_number_table_attribute(methodHandle method,
u2 num_entries) {
write_attribute_name_index("LineNumberTable");
write_u4(2 + num_entries * (2 + 2));
write_u2(num_entries);
CompressedLineNumberReadStream stream(method->compressed_linenumber_table());
while (stream.read_pair()) {
write_u2(stream.bci());
write_u2(stream.line());
}
}