[0147] 优化打开大体积 TMU 文件的性能#3420
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Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
避免在解析 <#...> 十六进制数据时，每两个字符创建一次临时字符串。 通过内联函数直接处理字符，1M hex bytes 解析时间从 41ms 降至 29ms。 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
通过快速路径直接批量读取连续的 ASCII 普通字符，避免逐字符调用 read_char 创建临时字符串。1M 文本字符解析时间从约 100ms 降至约 40ms。 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
对于不含反斜杠转义的字符串，直接返回原字符串，避免逐字节复制。 1M 文本字符解析时间从约 40ms 进一步降至约 20ms。 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
新增单元测试覆盖 RAW_DATA、长文本和真实文件（chapter-4.tmu）的 解析性能，用于验证优化效果。 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
更新 0147.md 中的性能数据为 bench_start/bench_end 测量结果， 应用 bin/format 格式化。 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- 移除 from_hex_char 中多余的 C-style cast - 移除 read_next 中冗余的 if-else 分支和注释掉的旧代码 - 统一 fast path 中 ch 变量的使用 - UTF-8 分支改为批量追加替代逐字符追加 - 测试中 hex_data 构建改用 <<char 避免 100 万次临时 string 分配 - 新增单元测试：纯文本、转义序列、文档、复合节点 Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Summary
from_tmu.cpp中 RAW_DATA 的十六进制解析，用内联from_hex_char替代逐字节创建临时字符串调用from_hexread_next中普通字符解析，增加快速路径批量读取 ASCII 字符，避免逐字符调用read_chardecode函数，无转义字符时直接返回原字符串，避免不必要的复制chapter-4.tmu（14.4MB）解析时间从 399ms 降至 284ms（约 29% 提升）Test plan
xmake b convert_test && xmake r convert_test单元测试通过xmake b stem && xmake r stem /home/da/DevTeam/chapter-4.tmu验证大文件加载正常🤖 Generated with Claude Code