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zeekayandHanzo Dev
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Source files keep their SPDX-License-Identifier and Hanzo copyright line; the Gitea, Gogs and LFS Test Server copyrights they used to repeat now live once in NOTICE, alongside LICENSE. The header lint accepts any copyright line above the SPDX line, so it no longer demands an upstream one. Co-authored-by: Hanzo Dev <[email protected]>
119 lines
3.1 KiB
Go
119 lines
3.1 KiB
Go
// Copyright 2026 Hanzo AI, Inc. All rights reserved.
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// Copyright (c) 2015, Wade Simmons
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// SPDX-License-Identifier: MIT
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// gocovmerge takes the results from multiple `go test -coverprofile` runs and
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// merges them into one profile
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//go:build ignore
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package main
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import (
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"flag"
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"fmt"
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"io"
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"log"
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"os"
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"sort"
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"golang.org/x/tools/cover"
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)
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func mergeProfiles(p, merge *cover.Profile) {
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if p.Mode != merge.Mode {
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log.Fatalf("cannot merge profiles with different modes")
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}
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// Since the blocks are sorted, we can keep track of where the last block
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// was inserted and only look at the blocks after that as targets for merge
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startIndex := 0
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for _, b := range merge.Blocks {
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startIndex = mergeProfileBlock(p, b, startIndex)
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}
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}
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func mergeProfileBlock(p *cover.Profile, pb cover.ProfileBlock, startIndex int) int {
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sortFunc := func(i int) bool {
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pi := p.Blocks[i+startIndex]
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return pi.StartLine >= pb.StartLine && (pi.StartLine != pb.StartLine || pi.StartCol >= pb.StartCol)
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}
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i := 0
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if sortFunc(i) != true {
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i = sort.Search(len(p.Blocks)-startIndex, sortFunc)
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}
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i += startIndex
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if i < len(p.Blocks) && p.Blocks[i].StartLine == pb.StartLine && p.Blocks[i].StartCol == pb.StartCol {
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if p.Blocks[i].EndLine != pb.EndLine || p.Blocks[i].EndCol != pb.EndCol {
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log.Fatalf("OVERLAP MERGE: %v %v %v", p.FileName, p.Blocks[i], pb)
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}
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switch p.Mode {
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case "set":
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p.Blocks[i].Count |= pb.Count
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case "count", "atomic":
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p.Blocks[i].Count += pb.Count
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default:
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log.Fatalf("unsupported covermode: '%s'", p.Mode)
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}
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} else {
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if i > 0 {
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pa := p.Blocks[i-1]
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if pa.EndLine >= pb.EndLine && (pa.EndLine != pb.EndLine || pa.EndCol > pb.EndCol) {
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log.Fatalf("OVERLAP BEFORE: %v %v %v", p.FileName, pa, pb)
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}
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}
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if i < len(p.Blocks)-1 {
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pa := p.Blocks[i+1]
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if pa.StartLine <= pb.StartLine && (pa.StartLine != pb.StartLine || pa.StartCol < pb.StartCol) {
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log.Fatalf("OVERLAP AFTER: %v %v %v", p.FileName, pa, pb)
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}
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}
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p.Blocks = append(p.Blocks, cover.ProfileBlock{})
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copy(p.Blocks[i+1:], p.Blocks[i:])
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p.Blocks[i] = pb
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}
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return i + 1
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}
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func addProfile(profiles []*cover.Profile, p *cover.Profile) []*cover.Profile {
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i := sort.Search(len(profiles), func(i int) bool { return profiles[i].FileName >= p.FileName })
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if i < len(profiles) && profiles[i].FileName == p.FileName {
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mergeProfiles(profiles[i], p)
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} else {
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profiles = append(profiles, nil)
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copy(profiles[i+1:], profiles[i:])
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profiles[i] = p
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}
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return profiles
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}
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func dumpProfiles(profiles []*cover.Profile, out io.Writer) {
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if len(profiles) == 0 {
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return
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}
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fmt.Fprintf(out, "mode: %s\n", profiles[0].Mode)
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for _, p := range profiles {
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for _, b := range p.Blocks {
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fmt.Fprintf(out, "%s:%d.%d,%d.%d %d %d\n", p.FileName, b.StartLine, b.StartCol, b.EndLine, b.EndCol, b.NumStmt, b.Count)
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}
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}
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}
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func main() {
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flag.Parse()
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var merged []*cover.Profile
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for _, file := range flag.Args() {
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profiles, err := cover.ParseProfiles(file)
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if err != nil {
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log.Fatalf("failed to parse profile '%s': %v", file, err)
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}
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for _, p := range profiles {
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merged = addProfile(merged, p)
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}
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}
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dumpProfiles(merged, os.Stdout)
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}
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