Integrate grin with immutable_edgecut_fragment

[andydiwenzhu]

What do these changes do?

The changes are two-fold:

• [x] Use immutable_edgecut_fragment to implement GRIN API
• [x] Use GRIN API to implement a new version of immutable_edgecut_fragment

[CLAassistant]

All committers have signed the CLA.

[codecov-commenter]

Codecov Report

Merging #132 (cdd6ba2) into master (7e81adf) will increase coverage by 1.09%. The diff coverage is n/a.

Additional details and impacted files

[](https://codecov.io/gh/alibaba/libgrape-lite/pull/132?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba) ```diff @@ Coverage Diff @@ ## master #132 +/- ## ========================================== + Coverage 68.93% 70.03% +1.09% ========================================== Files 64 64 Lines 5504 5726 +222 ========================================== + Hits 3794 4010 +216 - Misses 1710 1716 +6 ``` | Flag | Coverage Δ | | |---|---|---| | app_tests | `70.03% <ø> (+1.09%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#carryforward-flags-in-the-pull-request-comment) to find out more. | [Impacted Files](https://codecov.io/gh/alibaba/libgrape-lite/pull/132?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba) | Coverage Δ | | |---|---|---| | [tests/vertex\_map\_tests.cc](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#diff-dGVzdHMvdmVydGV4X21hcF90ZXN0cy5jYw==) | `90.19% <0.00%> (-0.43%)` | :arrow_down: | | [grape/fragment/mutable\_edgecut\_fragment.h](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#diff-Z3JhcGUvZnJhZ21lbnQvbXV0YWJsZV9lZGdlY3V0X2ZyYWdtZW50Lmg=) | `51.42% <0.00%> (-0.36%)` | :arrow_down: | | [grape/communication/sync\_comm.h](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#diff-Z3JhcGUvY29tbXVuaWNhdGlvbi9zeW5jX2NvbW0uaA==) | `52.94% <0.00%> (-0.21%)` | :arrow_down: | | [grape/graph/id\_indexer.h](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#diff-Z3JhcGUvZ3JhcGgvaWRfaW5kZXhlci5o) | `68.61% <0.00%> (-0.14%)` | :arrow_down: | | [tests/mutate\_tests.cc](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#diff-dGVzdHMvbXV0YXRlX3Rlc3RzLmNj) | `0.00% <0.00%> (ø)` | | | [grape/fragment/loader.h](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#diff-Z3JhcGUvZnJhZ21lbnQvbG9hZGVyLmg=) | `100.00% <0.00%> (ø)` | | | [grape/io/tsv\_line\_parser.h](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#diff-Z3JhcGUvaW8vdHN2X2xpbmVfcGFyc2VyLmg=) | `100.00% <0.00%> (ø)` | | | [grape/graph/de\_mutable\_csr.h](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#diff-Z3JhcGUvZ3JhcGgvZGVfbXV0YWJsZV9jc3IuaA==) | `40.16% <0.00%> (ø)` | | | [grape/parallel/auto\_parallel\_message\_manager.h](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#diff-Z3JhcGUvcGFyYWxsZWwvYXV0b19wYXJhbGxlbF9tZXNzYWdlX21hbmFnZXIuaA==) | `78.31% <0.00%> (ø)` | | | [grape/worker/worker.h](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba#diff-Z3JhcGUvd29ya2VyL3dvcmtlci5o) | `93.33% <0.00%> (+0.11%)` | :arrow_up: | | ... and [18 more](https://codecov.io/gh/alibaba/libgrape-lite/pull/132/diff?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alibaba) | |