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@ -1,2 +0,0 @@
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# Rework a more efficient one usinc `memchr2()`
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We can `memchr2('\n','\n', mapped_file_memory)` on a `mmap()`'d input file to find the grouping seperators, and process each group in parallel
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@ -1,312 +0,0 @@
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"addr2line",
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"cc",
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"cfg-if",
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"libc",
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"miniz_oxide",
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"object",
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"rustc-demangle",
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]
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||||||
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||||||
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||||||
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"backtrace",
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"eyre",
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"indenter",
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"once_cell",
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"owo-colors",
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]
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[[package]]
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||||||
"color-eyre",
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||||||
"jemallocator",
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"linebuffer",
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"log",
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"pretty_env_logger",
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]
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[[package]]
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"atty",
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"humantime",
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"log",
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"regex",
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||||||
"termcolor",
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||||||
]
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||||||
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[[package]]
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||||||
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dependencies = [
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||||||
"indenter",
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"once_cell",
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]
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||||||
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||||||
dependencies = [
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||||||
"libc",
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||||||
]
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||||||
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||||||
[[package]]
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||||||
name = "humantime"
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||||||
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||||||
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||||||
dependencies = [
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||||||
"quick-error",
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||||||
]
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||||||
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||||||
[[package]]
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||||||
name = "indenter"
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||||||
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||||||
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||||||
[[package]]
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||||||
dependencies = [
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||||||
"cc",
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||||||
"fs_extra",
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||||||
"libc",
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||||||
]
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||||||
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||||||
[[package]]
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||||||
name = "jemallocator"
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||||||
version = "0.5.0"
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||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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||||||
"jemalloc-sys",
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||||||
"libc",
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||||||
]
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||||||
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||||||
[[package]]
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||||||
name = "libc"
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[[package]]
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name = "linebuffer"
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||||||
version = "0.1.1"
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||||||
dependencies = [
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||||||
"arrayvec",
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|
||||||
]
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||||||
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||||||
[[package]]
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||||||
name = "log"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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|
||||||
"cfg-if",
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|
||||||
]
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||||||
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||||||
[[package]]
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||||||
name = "memchr"
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||||||
version = "2.5.0"
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|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||||
[[package]]
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||||||
name = "miniz_oxide"
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||||||
version = "0.6.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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||||||
dependencies = [
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|
||||||
"adler",
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|
||||||
]
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|
||||||
|
|
||||||
[[package]]
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||||||
name = "object"
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||||||
version = "0.30.0"
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||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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|
||||||
dependencies = [
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||||||
"memchr",
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||||||
]
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||||||
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||||||
[[package]]
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||||||
name = "once_cell"
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||||||
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source = "registry+https://github.com/rust-lang/crates.io-index"
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||||||
[[package]]
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||||||
[[package]]
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||||||
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||||||
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||||||
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||||||
dependencies = [
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|
||||||
"env_logger",
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||||||
"log",
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||||||
]
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||||||
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||||||
[[package]]
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||||||
name = "quick-error"
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||||||
version = "1.2.3"
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||||||
[[package]]
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version = "1.7.0"
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||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||||
dependencies = [
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||||||
"aho-corasick",
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||||||
"memchr",
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||||||
"regex-syntax",
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]
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||||||
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[[package]]
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||||||
name = "regex-syntax"
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||||||
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||||||
[[package]]
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||||||
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||||||
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||||||
[[package]]
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||||||
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||||||
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||||||
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|
||||||
checksum = "bab24d30b911b2376f3a13cc2cd443142f0c81dda04c118693e35b3835757755"
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||||||
dependencies = [
|
|
||||||
"winapi-util",
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|
||||||
]
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|
||||||
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||||||
[[package]]
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||||||
name = "winapi"
|
|
||||||
version = "0.3.9"
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|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
|
||||||
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
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|
||||||
dependencies = [
|
|
||||||
"winapi-i686-pc-windows-gnu",
|
|
||||||
"winapi-x86_64-pc-windows-gnu",
|
|
||||||
]
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||||||
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|
||||||
[[package]]
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|
||||||
name = "winapi-i686-pc-windows-gnu"
|
|
||||||
version = "0.4.0"
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|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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|
||||||
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
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|
||||||
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|
||||||
[[package]]
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|
||||||
name = "winapi-util"
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|
||||||
version = "0.1.5"
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|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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|
||||||
checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
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|
||||||
dependencies = [
|
|
||||||
"winapi",
|
|
||||||
]
|
|
||||||
|
|
||||||
[[package]]
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|
||||||
name = "winapi-x86_64-pc-windows-gnu"
|
|
||||||
version = "0.4.0"
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|
||||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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|
||||||
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
|
||||||
@ -1,29 +0,0 @@
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[package]
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|
||||||
name = "day14"
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|
||||||
version = "0.1.0"
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|
||||||
edition = "2021"
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|
||||||
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|
||||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
|
||||||
|
|
||||||
[profile.release]
|
|
||||||
opt-level = 3
|
|
||||||
lto = "fat"
|
|
||||||
codegen-units = 1
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|
||||||
strip=true
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|
||||||
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|
||||||
[profile.symbols]
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|
||||||
inherits="release"
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|
||||||
#incremental=true
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|
||||||
strip=false
|
|
||||||
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|
||||||
[features]
|
|
||||||
default= ["jemallocator"]
|
|
||||||
|
|
||||||
status = ["jemallocator/profiling", "pretty_env_logger"]
|
|
||||||
|
|
||||||
[dependencies]
|
|
||||||
color-eyre = { version = "0.6.2", default-features = false }
|
|
||||||
jemallocator = { version = "0.5.0", optional = true }
|
|
||||||
linebuffer = { path = "/home/avril/work/linebuffer" }
|
|
||||||
log = "0.4.17"
|
|
||||||
pretty_env_logger = { version = "0.4.0", optional = true }
|
|
||||||
@ -0,0 +1,117 @@
|
|||||||
|
# Generic C and C++ Makefile project template
|
||||||
|
# Contains targets for `release', `debug', and `clean'.
|
||||||
|
|
||||||
|
PROJECT=project
|
||||||
|
AUTHOR=Avril (Flanchan) <flanchan@cumallover.me>
|
||||||
|
VERSION=0.0.0
|
||||||
|
|
||||||
|
SRC_C = $(wildcard src/*.c)
|
||||||
|
SRC_CXX = $(wildcard src/*.cpp)
|
||||||
|
|
||||||
|
INCLUDE=include
|
||||||
|
|
||||||
|
# Link to these libraries dynamicalls
|
||||||
|
SHARED_LIBS=
|
||||||
|
# Link to these libraries statically
|
||||||
|
STATIC_LIBS=
|
||||||
|
|
||||||
|
override __VERSION_SPLIT:= $(subst ., ,$(VERSION))
|
||||||
|
override __VERSION_REVISION:=$(word 3,$(__VERSION_SPLIT)) 0
|
||||||
|
override __VERSION_SPLIT:= MAJOR:$(word 1,$(__VERSION_SPLIT)) MINOR:$(word 2,$(__VERSION_SPLIT)) BUGFIX:$(word 1,$(subst r, ,$(__VERSION_REVISION))) REVISION:$(word 2,$(subst r, ,$(__VERSION_REVISION))) REVISION_STRING:$(word 3,$(__VERSION_SPLIT))
|
||||||
|
|
||||||
|
COMMON_FLAGS+= -W -Wall -Wstrict-aliasing -fno-strict-aliasing $(addprefix -I,$(INCLUDE))
|
||||||
|
COMMON_FLAGS+= $(addprefix -D_VERSION_,$(subst :,=,$(__VERSION_SPLIT))) '-D_VERSION="$(VERSION)"'
|
||||||
|
|
||||||
|
# Target arch. Set to blank for generic
|
||||||
|
ARCH?=native
|
||||||
|
# Enable OpenMP and loop parallelisation? (dyn-links to openmp)
|
||||||
|
PARALLEL?=yes
|
||||||
|
|
||||||
|
OPT_FLAGS?= -fgraphite \
|
||||||
|
-floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block \
|
||||||
|
-fno-stack-check
|
||||||
|
|
||||||
|
ifneq ($(ARCH),)
|
||||||
|
OPT_FLAGS+= $(addprefix -march=,$(ARCH))
|
||||||
|
endif
|
||||||
|
|
||||||
|
ifeq ($(PARALLEL),yes)
|
||||||
|
OPT_FLAGS+= -fopenmp -floop-parallelize-all -ftree-parallelize-loops=4
|
||||||
|
endif
|
||||||
|
|
||||||
|
CXX_OPT_FLAGS?= $(OPT_FLAGS) -felide-constructors
|
||||||
|
|
||||||
|
CSTD?=gnu2x
|
||||||
|
CXXSTD?=gnu++23
|
||||||
|
|
||||||
|
CFLAGS += $(COMMON_FLAGS) --std=$(CSTD)
|
||||||
|
CXXFLAGS += $(COMMON_FLAGS) --std=$(CXXSTD)
|
||||||
|
LDFLAGS += $(addsuffix .a,$(addprefix -l:lib,$(STATIC_LIBS))) $(addprefix -l,$(SHARED_LIBS))
|
||||||
|
|
||||||
|
|
||||||
|
STRIP=strip
|
||||||
|
|
||||||
|
RELEASE_COMMON_FLAGS+= -Werror -fno-bounds-check
|
||||||
|
DEBUG_COMMON_FLAGS+= -ggdb -gz -fanalyzer -ftrapv -fbounds-check
|
||||||
|
|
||||||
|
ifneq ($(TARGET_SPEC_FLAGS),no)
|
||||||
|
RELEASE_CFLAGS?= -O3 -flto $(OPT_FLAGS)
|
||||||
|
RELEASE_CXXFLAGS?= -O3 -flto $(CXX_OPT_FLAGS)
|
||||||
|
RELEASE_LDFLAGS?= -Wl,-O3 -Wl,-flto
|
||||||
|
|
||||||
|
DEBUG_CFLAGS?= -Og
|
||||||
|
DEBUG_CXXFLAGS?= -Og
|
||||||
|
|
||||||
|
DEBUG_LDFLAGS?=
|
||||||
|
endif
|
||||||
|
|
||||||
|
DEBUG_CFLAGS+=-DDEBUG $(DEBUG_COMMON_FLAGS)
|
||||||
|
DEBUG_CXXFLAGS+=-DDEBUG $(DEBUG_COMMON_FLAGS) -fasynchronous-unwind-tables
|
||||||
|
|
||||||
|
RELEASE_CFLAGS+=-DRELEASE $(RELEASE_COMMON_FLAGS)
|
||||||
|
RELEASE_CXXFLAGS+=-DRELEASE $(RELEASE_COMMON_FLAGS)
|
||||||
|
|
||||||
|
# Objects
|
||||||
|
|
||||||
|
OBJ_C = $(addprefix obj/c/,$(SRC_C:.c=.o))
|
||||||
|
OBJ_CXX = $(addprefix obj/cxx/,$(SRC_CXX:.cpp=.o))
|
||||||
|
OBJ = $(OBJ_C) $(OBJ_CXX)
|
||||||
|
|
||||||
|
# Phonies
|
||||||
|
|
||||||
|
.PHONY: release
|
||||||
|
release: | dirs $(PROJECT)-release
|
||||||
|
|
||||||
|
.PHONY: debug
|
||||||
|
debug: | dirs $(PROJECT)-debug
|
||||||
|
|
||||||
|
# Targets
|
||||||
|
|
||||||
|
dirs:
|
||||||
|
@mkdir -p obj/c{,xx}/src
|
||||||
|
|
||||||
|
obj/c/%.o: %.c
|
||||||
|
$(CC) -c $< $(CFLAGS) -o $@ $(LDFLAGS)
|
||||||
|
|
||||||
|
obj/cxx/%.o: %.cpp
|
||||||
|
$(CXX) -c $< $(CXXFLAGS) -o $@ $(LDFLAGS)
|
||||||
|
|
||||||
|
$(PROJECT)-release: CFLAGS+= $(RELEASE_CFLAGS)
|
||||||
|
$(PROJECT)-release: CXXFLAGS += $(RELEASE_CXXFLAGS)
|
||||||
|
$(PROJECT)-release: LDFLAGS += $(RELEASE_LDFLAGS)
|
||||||
|
$(PROJECT)-release: $(OBJ)
|
||||||
|
$(CXX) $^ $(CXXFLAGS) -o $@ $(LDFLAGS)
|
||||||
|
$(STRIP) $@
|
||||||
|
|
||||||
|
$(PROJECT)-debug: CFLAGS+= $(DEBUG_CFLAGS)
|
||||||
|
$(PROJECT)-debug: CXXFLAGS += $(DEBUG_CXXFLAGS)
|
||||||
|
$(PROJECT)-debug: LDFLAGS += $(DEBUG_LDFLAGS)
|
||||||
|
$(PROJECT)-debug: $(OBJ)
|
||||||
|
$(CXX) $^ $(CXXFLAGS) -o $@ $(LDFLAGS)
|
||||||
|
|
||||||
|
clean-rebuild:
|
||||||
|
rm -rf obj
|
||||||
|
|
||||||
|
clean: clean-rebuild
|
||||||
|
rm -f $(PROJECT)-{release,debug,pgo}
|
||||||
|
|
||||||
@ -0,0 +1,39 @@
|
|||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <memory>
|
||||||
|
|
||||||
|
#include <cstdint>
|
||||||
|
|
||||||
|
struct Point {
|
||||||
|
uint64_t x,y;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct Line {
|
||||||
|
Point start, end;
|
||||||
|
};
|
||||||
|
|
||||||
|
template<typename T>
|
||||||
|
using Output = T* __restrict__;
|
||||||
|
|
||||||
|
namespace Input {
|
||||||
|
struct Parser {
|
||||||
|
Parser(const char* string, size_t len) noexcept;
|
||||||
|
template<size_t N>
|
||||||
|
inline Parser(const char (&string)[N]) noexcept
|
||||||
|
: Parser(string, N) {}
|
||||||
|
|
||||||
|
Parser(Parser&&) noexcept;
|
||||||
|
Parser(const Parser&) = delete;
|
||||||
|
|
||||||
|
Parser& operator=(Parser&&) noexcept;
|
||||||
|
Parser& operator=(const Parser&) = delete;
|
||||||
|
|
||||||
|
bool try_read_next(Output<Line>);
|
||||||
|
|
||||||
|
virtual ~Parser();
|
||||||
|
private:
|
||||||
|
struct _impl;
|
||||||
|
|
||||||
|
std::unique_ptr<_impl> state_;
|
||||||
|
};
|
||||||
|
}
|
||||||
@ -1,180 +0,0 @@
|
|||||||
//! Grid of lines and sands
|
|
||||||
use super::*;
|
|
||||||
use std::{
|
|
||||||
collections::BTreeMap,
|
|
||||||
borrow::Cow,
|
|
||||||
|
|
||||||
fmt,
|
|
||||||
};
|
|
||||||
|
|
||||||
#[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord, Default, Copy)]
|
|
||||||
#[repr(u8)]
|
|
||||||
pub enum Cell
|
|
||||||
{
|
|
||||||
#[default]
|
|
||||||
Air = b'.',
|
|
||||||
Wall = b'#',
|
|
||||||
Settled = b'O',
|
|
||||||
Falling = b'~',
|
|
||||||
Source = b'+',
|
|
||||||
}
|
|
||||||
|
|
||||||
impl From<Cell> for u8
|
|
||||||
{
|
|
||||||
#[inline(always)]
|
|
||||||
fn from(from: Cell) -> Self
|
|
||||||
{
|
|
||||||
from as u8
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
impl fmt::Display for Cell
|
|
||||||
{
|
|
||||||
#[inline]
|
|
||||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result
|
|
||||||
{
|
|
||||||
write!(f, "{}", u8::from(*self) as char)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
#[derive(Debug, Clone, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
|
|
||||||
pub struct Grid
|
|
||||||
{
|
|
||||||
map: BTreeMap<Point, Cell>,
|
|
||||||
}
|
|
||||||
|
|
||||||
impl Grid
|
|
||||||
{
|
|
||||||
#[inline]
|
|
||||||
pub const fn new() -> Self
|
|
||||||
{
|
|
||||||
Self {
|
|
||||||
map: BTreeMap::new(),
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
#[inline(always)]
|
|
||||||
pub fn insert_single(&mut self, point: Point, cell: Cell) -> Option<Cell>
|
|
||||||
{
|
|
||||||
self.map.insert(point, cell)
|
|
||||||
}
|
|
||||||
|
|
||||||
#[inline]
|
|
||||||
pub fn draw_line_with<F>(&mut self, line: Line, mut with: F)
|
|
||||||
where F: for<'a> FnMut(&'a Point) -> Cell
|
|
||||||
{
|
|
||||||
for point in line.unroll() {
|
|
||||||
let cell = with(&point);
|
|
||||||
self.map.insert(point, cell);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
#[inline]
|
|
||||||
pub fn draw_line(&mut self, line: Line, cell: Cell)
|
|
||||||
{
|
|
||||||
self.draw_line_with(line, move |_| cell)
|
|
||||||
}
|
|
||||||
|
|
||||||
#[inline]
|
|
||||||
pub fn draw_lines_with<I,F>(&mut self, line: I, mut with: F)
|
|
||||||
where F: for<'a> FnMut(&'a Point) -> Cell,
|
|
||||||
I: IntoIterator<Item = Line>
|
|
||||||
{
|
|
||||||
for point in line.into_iter().map(|x| x.normalised().unroll()).flatten() {
|
|
||||||
let cell = with(&point);
|
|
||||||
self.map.insert(point, cell);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/// Draw these lines with this cell
|
|
||||||
#[inline]
|
|
||||||
pub fn draw_lines(&mut self, lines: impl IntoIterator<Item = Line>, cell: Cell)
|
|
||||||
{
|
|
||||||
self.draw_lines_with(lines, move |_| cell)
|
|
||||||
}
|
|
||||||
|
|
||||||
/// Add the source to the grid
|
|
||||||
#[inline(always)]
|
|
||||||
pub fn draw_source(&mut self, source: Point)
|
|
||||||
{
|
|
||||||
self.map.insert(source, Cell::Source);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/// Create a new sparse grid, returns the point.
|
|
||||||
///
|
|
||||||
/// A sparse grid does not draw air, only the specified `walls`.
|
|
||||||
#[inline]
|
|
||||||
pub fn sparse_grid(walls: Lines) -> (grid::Grid, Point)
|
|
||||||
{
|
|
||||||
let mut grid = grid::Grid::new();
|
|
||||||
// Add source
|
|
||||||
grid.draw_source(ORIGIN_POINT);
|
|
||||||
|
|
||||||
// Draw walls
|
|
||||||
grid.draw_lines(walls, Cell::Wall);
|
|
||||||
|
|
||||||
(grid, ORIGIN_POINT)
|
|
||||||
}
|
|
||||||
|
|
||||||
// Non-drawing grid functions
|
|
||||||
impl Grid
|
|
||||||
{
|
|
||||||
/// Number of points in the grid
|
|
||||||
#[inline]
|
|
||||||
pub fn len(&self) -> usize
|
|
||||||
{
|
|
||||||
self.map.len()
|
|
||||||
}
|
|
||||||
|
|
||||||
/// Find the highest point in the collection
|
|
||||||
#[inline(always)]
|
|
||||||
pub fn find_high_bound(&self) -> Point
|
|
||||||
{
|
|
||||||
let x = self.map.keys().max_by(|a, b| u64::cmp(&a.x, &b.x)).map(|x| x.x).unwrap_or(0);
|
|
||||||
let y = self.map.keys().max_by(|a, b| u64::cmp(&a.y, &b.y)).map(|y| y.y).unwrap_or(0);
|
|
||||||
Point{ x, y }
|
|
||||||
}
|
|
||||||
|
|
||||||
/// Find the lowest point in the collection
|
|
||||||
#[inline(always)]
|
|
||||||
pub fn find_low_bound(&self) -> Point
|
|
||||||
{
|
|
||||||
let x = self.map.keys().min_by(|a, b| u64::cmp(&a.x, &b.x)).map(|x| x.x).unwrap_or(0);
|
|
||||||
let y = self.map.keys().min_by(|a, b| u64::cmp(&a.y, &b.y)).map(|y| y.y).unwrap_or(0);
|
|
||||||
Point{ x, y }
|
|
||||||
}
|
|
||||||
|
|
||||||
/// Find the low and high bound as a flattened line
|
|
||||||
#[inline]
|
|
||||||
pub fn find_bound(&self) -> Line
|
|
||||||
{
|
|
||||||
let start = self.find_low_bound();
|
|
||||||
let end = self.find_high_bound();
|
|
||||||
Line{ start, end }
|
|
||||||
}
|
|
||||||
|
|
||||||
/// Iterate over a sparse grid, bounded by `bound`, any not set cells will be drawn with air.
|
|
||||||
#[inline]
|
|
||||||
pub fn iterate_sparse<'g>(&'g self, bound: Line) -> impl Iterator<Item = &'g Cell> + 'g
|
|
||||||
{
|
|
||||||
const AIR: Cell = Cell::Air;
|
|
||||||
//let mut grid = start.map.iter().fuse().peekable();
|
|
||||||
bound.normalised().unroll().into_iter()
|
|
||||||
.map(move |point| {
|
|
||||||
if let Some(cell) = self.map.get(&point) {
|
|
||||||
// Contains the point, return that reference
|
|
||||||
return cell;
|
|
||||||
}
|
|
||||||
/*
|
|
||||||
if let Some(&(next_wall, cell)) = grid.peek() {
|
|
||||||
if next_wall == &point {
|
|
||||||
// Take this point off the iterator if it matches
|
|
||||||
return grid.next().unwrap().1;
|
|
||||||
}
|
|
||||||
}*/
|
|
||||||
&AIR
|
|
||||||
})
|
|
||||||
}
|
|
||||||
}
|
|
||||||
@ -0,0 +1,120 @@
|
|||||||
|
|
||||||
|
#include <cstring>
|
||||||
|
|
||||||
|
#include <input.h>
|
||||||
|
|
||||||
|
namespace {
|
||||||
|
template<typename T>
|
||||||
|
[[gnu::pure]]
|
||||||
|
inline T* gmemchr(T* ptr, char ch, size_t sz) noexcept {
|
||||||
|
return (T*)memchr((void*)ptr, ch, sz * sizeof(T));
|
||||||
|
}
|
||||||
|
|
||||||
|
template<typename T>
|
||||||
|
inline size_t gmemchr_s(T* ptr, char ch, size_t sz) noexcept {
|
||||||
|
if(T* p = gmemchr(ptr, ch, sz)) return (size_t)(p - ptr);
|
||||||
|
else return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
template<typename F> requires(std::is_invocable_v<F>)
|
||||||
|
struct Defer {
|
||||||
|
constexpr explicit Defer(std::nullptr_t) noexcept
|
||||||
|
: f(nullptr) {}
|
||||||
|
constexpr Defer(F&& func) noexcept(std::is_nothrow_move_constructible_v<F>)
|
||||||
|
: f(std::make_unique<F>(std::move(func))) {}
|
||||||
|
constexpr virtual ~Defer() noexcept(std::is_nothrow_invocable_v<F>) { if(f) (*f)(); }
|
||||||
|
|
||||||
|
constexpr Defer(Defer&& m) noexcept
|
||||||
|
: f(std::move(m.f)) {}
|
||||||
|
constexpr Defer(const Defer& p) noexcept requires(std::is_copy_constructible_v<F>)
|
||||||
|
: f(p.f ? *p.f : nullptr) {}
|
||||||
|
constexpr Defer& operator=(Defer&& m) noexcept(std::is_nothrow_move_constructible_v<F>)
|
||||||
|
{
|
||||||
|
if(this != std::addressof(m)) {
|
||||||
|
f = std::move(m.f);
|
||||||
|
} return *this;
|
||||||
|
}
|
||||||
|
constexpr Defer& operator=(const Defer& c) noexcept(std::is_nothrow_copy_constructible_v<F>) requires(std::is_copy_constructible_v<F>)
|
||||||
|
{
|
||||||
|
if(this != std::addressof(m)) {
|
||||||
|
if(c.f) f = std::make_unique<F>(*c.f);
|
||||||
|
else f = nullptr;
|
||||||
|
} return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
template<typename... Args>
|
||||||
|
constexpr decltype(auto) operator()(Args&&... args) noexcept(std::is_nothrow_invocable_v<F, Args...>) requires(std::is_invocable_v<F, Args...>)
|
||||||
|
{ return std::forward<std::invoke_result_t<F, Args...>>( (*f)() ); }
|
||||||
|
private:
|
||||||
|
std::unique_ptr<F> f;
|
||||||
|
};
|
||||||
|
template<typename F> requires(std::is_invocable_v<F>)
|
||||||
|
constexpr auto defer_call(F&& func) noexcept(std::is_nothrow_move_constructible_v<F>) { return Defer<F>{std::move(func)}; }
|
||||||
|
#define $CAT_(a, b) a ## b
|
||||||
|
#define $CAT(a, b) $CAT_(a, b)
|
||||||
|
#define $DEFER(...) const auto $CAT(_$__defer_, __LINE__) = ::defer_call( __VA_ARGS__ )
|
||||||
|
}
|
||||||
|
|
||||||
|
namespace Input {
|
||||||
|
struct Parser::_impl {
|
||||||
|
struct {
|
||||||
|
const char* data;
|
||||||
|
size_t len;
|
||||||
|
} src;
|
||||||
|
|
||||||
|
const char* cur_line;
|
||||||
|
size_t cur_len;
|
||||||
|
};
|
||||||
|
Parser::Parser(const char* string, size_t len) noexcept
|
||||||
|
: state_(std::make_unique<_impl>())
|
||||||
|
{
|
||||||
|
state_->cur_line = state_->src.data = string;
|
||||||
|
state_->cur_len = state_->src.len = len;
|
||||||
|
}
|
||||||
|
|
||||||
|
Parser::~Parser() {}
|
||||||
|
|
||||||
|
Parser::Parser(Parser&& p) noexcept
|
||||||
|
: state_(std::move(p.state_)) {}
|
||||||
|
|
||||||
|
Parser& Parser::operator=(Parser&& p) noexcept
|
||||||
|
{
|
||||||
|
if(this != std::addressof(p)) {
|
||||||
|
state_ = std::move(p.state_);
|
||||||
|
} return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool Parser::try_read_next(Output<Line> output)
|
||||||
|
{
|
||||||
|
const char* start = state_->cur_line;
|
||||||
|
const char* end = gmemchr(start, '\n', state_->cur_len);
|
||||||
|
if(!end) return false;
|
||||||
|
|
||||||
|
size_t diff = (size_t)(end - state_->cur_line);
|
||||||
|
|
||||||
|
if(diff > 1) {
|
||||||
|
auto string = std::string_view{ start, gmemchr_s(start, ' ', diff - 1) };
|
||||||
|
|
||||||
|
for(size_t i=0;
|
||||||
|
string.size() && string.data() < end;
|
||||||
|
i++,
|
||||||
|
string = std::string_view{ start += string.size(), // start = start + last size
|
||||||
|
gmemchr_s(start, ' ', diff - 1) // XXX: <-- this should be `start + string.size()`
|
||||||
|
})
|
||||||
|
{
|
||||||
|
switch(i) {
|
||||||
|
case 0: output->start = parse_point(string); break; // First point
|
||||||
|
case 1: continue; // Arrow
|
||||||
|
case 2: output->end = parse_point(string); break; // Second point
|
||||||
|
case 3: continue; // Arrow
|
||||||
|
default: goto le; // Next point, quit
|
||||||
|
}
|
||||||
|
}
|
||||||
|
le:
|
||||||
|
end = ((const char*)string.data()) + string.size();
|
||||||
|
state_->cur_len = (size_t)(end - state_->cur_line); // TODO: Is this the correct length calculation? I don't think it is....
|
||||||
|
state_->cur_line = end;
|
||||||
|
return true;
|
||||||
|
} else return false;
|
||||||
|
}
|
||||||
|
}
|
||||||
@ -1,359 +0,0 @@
|
|||||||
#![feature(repr_simd)]
|
|
||||||
|
|
||||||
#[macro_use] extern crate log;
|
|
||||||
|
|
||||||
use std::{
|
|
||||||
str,
|
|
||||||
io,
|
|
||||||
iter,
|
|
||||||
path::Path,
|
|
||||||
fmt,
|
|
||||||
};
|
|
||||||
|
|
||||||
use color_eyre::{
|
|
||||||
eyre::{
|
|
||||||
self, eyre,
|
|
||||||
WrapErr as _,
|
|
||||||
},
|
|
||||||
Help as _, SectionExt as _,
|
|
||||||
};
|
|
||||||
|
|
||||||
use linebuffer::prelude::*;
|
|
||||||
|
|
||||||
#[cfg(feature="jemallocator")]
|
|
||||||
const _:() = {
|
|
||||||
use jemallocator::Jemalloc;
|
|
||||||
|
|
||||||
#[global_allocator]
|
|
||||||
static GLOBAL: Jemalloc = Jemalloc;
|
|
||||||
};
|
|
||||||
|
|
||||||
mod grid;
|
|
||||||
|
|
||||||
/// Base coordinate
|
|
||||||
pub type Coord = u64;
|
|
||||||
|
|
||||||
/// A point is a vector
|
|
||||||
#[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord, Copy)]
|
|
||||||
#[repr(simd)]
|
|
||||||
pub struct Point {
|
|
||||||
pub x: Coord,
|
|
||||||
pub y: Coord,
|
|
||||||
}
|
|
||||||
|
|
||||||
impl fmt::Display for Point
|
|
||||||
{
|
|
||||||
#[inline]
|
|
||||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result
|
|
||||||
{
|
|
||||||
write!(f, "{},{}", self.x, self.y)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
impl str::FromStr for Point
|
|
||||||
{
|
|
||||||
type Err = <u64 as str::FromStr>::Err;
|
|
||||||
#[inline]
|
|
||||||
fn from_str(s: &str) -> Result<Self, Self::Err> {
|
|
||||||
let (x, y) = s.split_once(',').unwrap_or((s, "0"));
|
|
||||||
Ok(Self {
|
|
||||||
x: x.parse()?,
|
|
||||||
y: y.parse()?,
|
|
||||||
})
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/// A `Line` is potentially two X any Ys
|
|
||||||
#[derive(Debug, Clone, PartialEq, Eq, Hash, PartialOrd, Ord, Copy)]
|
|
||||||
pub struct Line {
|
|
||||||
start: Point,
|
|
||||||
end: Point,
|
|
||||||
}
|
|
||||||
|
|
||||||
impl fmt::Display for Line
|
|
||||||
{
|
|
||||||
#[inline]
|
|
||||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result
|
|
||||||
{
|
|
||||||
write!(f, "{} -> {}", self.start, self.end)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
impl From<Point> for (Coord, Coord)
|
|
||||||
{
|
|
||||||
#[inline]
|
|
||||||
fn from(from: Point) -> Self
|
|
||||||
{
|
|
||||||
(from.x, from.y)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
impl From<(Coord, Coord)> for Point
|
|
||||||
{
|
|
||||||
#[inline(always)]
|
|
||||||
fn from((x,y): (Coord, Coord)) -> Self
|
|
||||||
{
|
|
||||||
Self {x,y}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
impl Line {
|
|
||||||
|
|
||||||
fn normalised(self) -> Self
|
|
||||||
{
|
|
||||||
let x = std::cmp::min(self.start.x, self.end.x);
|
|
||||||
let y = std::cmp::min(self.start.y, self.end.y);
|
|
||||||
let start = Point {x,y};
|
|
||||||
|
|
||||||
let x = std::cmp::max(self.start.x, self.end.x);
|
|
||||||
let y = std::cmp::max(self.start.y, self.end.y);
|
|
||||||
let end = Point {x,y};
|
|
||||||
|
|
||||||
Self {
|
|
||||||
start, end
|
|
||||||
}
|
|
||||||
}
|
|
||||||
#[inline]
|
|
||||||
fn normalise(&mut self)
|
|
||||||
{
|
|
||||||
*self = self.clone().normalised();
|
|
||||||
}
|
|
||||||
#[inline]
|
|
||||||
pub fn over_horizontal(&self) -> impl IntoIterator<Item = Point> + 'static
|
|
||||||
{
|
|
||||||
let x = self.start.x;
|
|
||||||
let y = self.start.y;
|
|
||||||
(self.start.x..=self.end.x).map(move |x| (x, y).into())
|
|
||||||
}
|
|
||||||
#[inline]
|
|
||||||
pub fn over_vertical(&self) -> impl IntoIterator<Item = Point> + 'static
|
|
||||||
{
|
|
||||||
let x = self.start.x;
|
|
||||||
(self.start.y..=self.end.y).map(move |y| (x, y).into())
|
|
||||||
}
|
|
||||||
|
|
||||||
#[inline]
|
|
||||||
pub fn unroll(&self) -> impl IntoIterator<Item = Point> + 'static
|
|
||||||
{
|
|
||||||
self.over_horizontal().into_iter()
|
|
||||||
.chain(self.over_vertical().into_iter())
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/// A single parsed line into `Line`s.
|
|
||||||
#[derive(Debug, Clone, Default)]
|
|
||||||
pub struct Lines {
|
|
||||||
lines: Vec<Line>,
|
|
||||||
}
|
|
||||||
|
|
||||||
impl IntoIterator for Lines
|
|
||||||
{
|
|
||||||
type Item= Line;
|
|
||||||
type IntoIter = std::vec::IntoIter<Line>;
|
|
||||||
|
|
||||||
#[inline]
|
|
||||||
fn into_iter(self) -> Self::IntoIter
|
|
||||||
{
|
|
||||||
self.lines.into_iter()
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
impl FromIterator<Lines> for Lines
|
|
||||||
{
|
|
||||||
#[inline]
|
|
||||||
fn from_iter<I: IntoIterator<Item=Lines>>(lines: I) -> Self
|
|
||||||
{
|
|
||||||
Self {
|
|
||||||
lines: Self::flattening(lines).into_iter().collect(),
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
impl FromIterator<Line> for Lines
|
|
||||||
{
|
|
||||||
#[inline]
|
|
||||||
fn from_iter<I: IntoIterator<Item=Line>>(lines: I) -> Self
|
|
||||||
{
|
|
||||||
Self {
|
|
||||||
lines: lines.into_iter().collect()
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
impl Lines {
|
|
||||||
#[inline]
|
|
||||||
pub fn concat(mut self, next: impl IntoIterator<Item = Line>) -> Self
|
|
||||||
{
|
|
||||||
self.lines.extend(next);
|
|
||||||
self
|
|
||||||
}
|
|
||||||
#[inline(always)]
|
|
||||||
pub fn flattening<'a, T: 'a>(lines: impl IntoIterator<Item = T> + 'a) -> impl IntoIterator<Item = Line> + 'a
|
|
||||||
where T: IntoIterator<Item = Line>
|
|
||||||
|
|
||||||
{
|
|
||||||
lines.into_iter().map(|x| x.into_iter()).flatten()
|
|
||||||
}
|
|
||||||
#[inline]
|
|
||||||
pub fn flatten(lines: impl IntoIterator<Item = Self>) -> Self
|
|
||||||
{
|
|
||||||
lines.into_iter().collect()
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
impl str::FromStr for Lines
|
|
||||||
{
|
|
||||||
type Err = <Point as str::FromStr>::Err;
|
|
||||||
#[inline]
|
|
||||||
fn from_str(s: &str) -> Result<Self, Self::Err> {
|
|
||||||
let mut next = s.split(" -> ").peekable();
|
|
||||||
let mut lines = Vec::new();
|
|
||||||
while let Some(start) = next.next()
|
|
||||||
{
|
|
||||||
let Some(second) = next.peek() else { continue };
|
|
||||||
lines.push(Line {
|
|
||||||
start: start.parse()?,
|
|
||||||
end: second.parse()?
|
|
||||||
})
|
|
||||||
}
|
|
||||||
Ok(Self{lines})
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
#[derive(Debug)]
|
|
||||||
struct Input {
|
|
||||||
all: Lines,
|
|
||||||
}
|
|
||||||
|
|
||||||
impl Input
|
|
||||||
{
|
|
||||||
/// Size of all non-unzipped (H+V) lines
|
|
||||||
#[inline]
|
|
||||||
pub fn zipped_len(&self) -> usize
|
|
||||||
{
|
|
||||||
self.all.lines.len()
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
impl FromIterator<Lines> for Input
|
|
||||||
{
|
|
||||||
#[inline]
|
|
||||||
fn from_iter<I: IntoIterator<Item=Lines>>(iter: I) -> Self
|
|
||||||
{
|
|
||||||
Self{ all: Lines::flatten(iter.into_iter()) }
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
impl Input {
|
|
||||||
#[inline(always)]
|
|
||||||
pub fn parse<R: io::Read>(reader: R) -> eyre::Result<Self>
|
|
||||||
{
|
|
||||||
Self::from_parser(ParsedLines::new(reader))
|
|
||||||
}
|
|
||||||
#[inline]
|
|
||||||
pub fn from_parser<R: io::Read>(lines: ParsedLines<R, forward::FromStr<Lines>>) -> eyre::Result<Self>
|
|
||||||
{
|
|
||||||
struct ParsedIter<T: io::Read>(ParsedLines<T, forward::FromStr<Lines>>);
|
|
||||||
impl<T: io::Read> Iterator for ParsedIter<T>
|
|
||||||
{
|
|
||||||
type Item = Result<Lines, linebuffer::lines::LineParseError<std::num::ParseIntError>>;
|
|
||||||
#[inline(always)]
|
|
||||||
fn next(&mut self) -> Option<Self::Item>
|
|
||||||
{
|
|
||||||
self.0.try_next()
|
|
||||||
}
|
|
||||||
}
|
|
||||||
impl<T: io::Read> iter::FusedIterator for ParsedIter<T>
|
|
||||||
where ParsedLines<T, forward::FromStr<Lines>>: iter::FusedIterator{}
|
|
||||||
|
|
||||||
ParsedIter(lines).enumerate().map(|(i,x)| x.wrap_err("Failed to parse single line").with_section(move || i.header("Line number is"))).collect()
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
#[inline]
|
|
||||||
fn load_input_from(from: impl AsRef<Path>) -> eyre::Result<impl io::Read + 'static>
|
|
||||||
{
|
|
||||||
std::fs::OpenOptions::new()
|
|
||||||
.read(true)
|
|
||||||
.open(&from)
|
|
||||||
.with_section(|| format!("{:?}", from.as_ref()).header("File name was"))
|
|
||||||
}
|
|
||||||
|
|
||||||
/// Input filename
|
|
||||||
const INPUT_FILENAME: &'static str = "input";
|
|
||||||
/// Starting point of sand falling
|
|
||||||
const ORIGIN_POINT: Point = Point { x: 500, y: 0 };
|
|
||||||
|
|
||||||
fn init() -> eyre::Result<()>
|
|
||||||
{
|
|
||||||
color_eyre::install()?;
|
|
||||||
#[cfg(feature="status")]
|
|
||||||
pretty_env_logger::init();
|
|
||||||
|
|
||||||
Ok(())
|
|
||||||
}
|
|
||||||
|
|
||||||
fn draw_grid<W: io::Write>(mut to: W, bound: Line, grid: &grid::Grid) -> io::Result<()>
|
|
||||||
{
|
|
||||||
for cells in grid.iterate_sparse(bound).chunk((bound.end.x - bound.start.x) as usize)
|
|
||||||
{
|
|
||||||
for cell in cells {
|
|
||||||
write!(&mut to, "{}", cell)?;
|
|
||||||
}
|
|
||||||
write!(&mut to, "\n")?;
|
|
||||||
}
|
|
||||||
Ok(())
|
|
||||||
}
|
|
||||||
|
|
||||||
/// Simulate the grid falling from `origin` in `grid`.
|
|
||||||
fn simulate(grid: &mut grid::Grid, origin: &Point) -> eyre::Result<()>
|
|
||||||
{
|
|
||||||
|
|
||||||
Ok(())
|
|
||||||
}
|
|
||||||
|
|
||||||
fn main() -> eyre::Result<()> {
|
|
||||||
init().wrap_err("Failed to install handlers and hooks")?;
|
|
||||||
|
|
||||||
// Parsed input
|
|
||||||
let input = {
|
|
||||||
// Input file
|
|
||||||
let input = load_input_from(INPUT_FILENAME)
|
|
||||||
.wrap_err("Failed to open input file")?;
|
|
||||||
|
|
||||||
// Parse input
|
|
||||||
Input::parse(input)
|
|
||||||
.wrap_err("Failed to parse input")?
|
|
||||||
};
|
|
||||||
|
|
||||||
if cfg!(feature="status") {
|
|
||||||
debug!("Read {} zipped lines from input", input.zipped_len());
|
|
||||||
|
|
||||||
trace!("Input is:\n```{input:#?}```");
|
|
||||||
}
|
|
||||||
|
|
||||||
//Draw lines into grid before starting simulation of sand from `origin`.
|
|
||||||
let (mut grid, origin) = grid::sparse_grid(input.all);
|
|
||||||
|
|
||||||
debug!("Read {} unzipped lines", grid.len());
|
|
||||||
|
|
||||||
//TODO: Simulate falling, adding and counting each stopped particle until the sand drops below the bottom of the lowest vertical line.
|
|
||||||
simulate(&mut grid, &origin)
|
|
||||||
.wrap_err("Failed to simulate grid")?;
|
|
||||||
|
|
||||||
// Draw grid
|
|
||||||
if cfg!(feature="status")
|
|
||||||
{
|
|
||||||
let bound = grid.find_bound();
|
|
||||||
debug!("Current map (bound: {}):", bound);
|
|
||||||
draw_grid(io::stderr().lock(), bound, &grid).wrap_err("Failed to draw grid to stderr")?;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
Ok(())
|
|
||||||
}
|
|
||||||
Loading…
Reference in new issue