From 49e14e27165ef5dd1884e6d31cd5ff39314118be Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustav=20S=C3=B6rn=C3=A4s?= <gustav@sornas.net>
Date: Mon, 2 Aug 2021 23:22:50 +0200
Subject: initial nom filter parsing

---
 cli/Cargo.lock    | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 cli/Cargo.toml    |  1 +
 cli/src/search.rs | 27 +++++++++++++++++++
 3 files changed, 104 insertions(+), 1 deletion(-)

diff --git a/cli/Cargo.lock b/cli/Cargo.lock
index 2a8bac4..2bc65b9 100644
--- a/cli/Cargo.lock
+++ b/cli/Cargo.lock
@@ -40,12 +40,30 @@ version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
+[[package]]
+name = "bitvec"
+version = "0.19.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8942c8d352ae1838c9dda0b0ca2ab657696ef2232a20147cf1b30ae1a9cb4321"
+dependencies = [
+ "funty",
+ "radium",
+ "tap",
+ "wyz",
+]
+
 [[package]]
 name = "cfg-if"
 version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "chrono"
 version = "0.4.19"
@@ -75,6 +93,12 @@ dependencies = [
  "vec_map",
 ]
 
+[[package]]
+name = "funty"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fed34cd105917e91daa4da6b3728c47b068749d6a62c59811f06ed2ac71d9da7"
+
 [[package]]
 name = "heck"
 version = "0.3.3"
@@ -105,17 +129,37 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
+[[package]]
+name = "lexical-core"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6607c62aa161d23d17a9072cc5da0be67cdfc89d3afb1e8d9c842bebc2525ffe"
+dependencies = [
+ "arrayvec",
+ "bitflags",
+ "cfg-if 1.0.0",
+ "ryu",
+ "static_assertions",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.98"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "320cfe77175da3a483efed4bc0adc1968ca050b098ce4f2f1c13a56626128790"
 
+[[package]]
+name = "memchr"
+version = "2.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
+
 [[package]]
 name = "money-cli"
 version = "0.1.0"
 dependencies = [
  "chrono",
+ "nom",
  "rust_decimal",
  "serde",
  "serde_json",
@@ -124,6 +168,19 @@ dependencies = [
  "twox-hash",
 ]
 
+[[package]]
+name = "nom"
+version = "6.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c5c51b9083a3c620fa67a2a635d1ce7d95b897e957d6b28ff9a5da960a103a6"
+dependencies = [
+ "bitvec",
+ "funty",
+ "lexical-core",
+ "memchr",
+ "version_check",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.44"
@@ -194,6 +251,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "radium"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "941ba9d78d8e2f7ce474c015eea4d9c6d25b6a3327f9832ee29a4de27f91bbb8"
+
 [[package]]
 name = "rust_decimal"
 version = "1.15.0"
@@ -311,6 +374,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "tap"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
+
 [[package]]
 name = "textwrap"
 version = "0.11.0"
@@ -336,7 +405,7 @@ version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04f8ab788026715fa63b31960869617cba39117e520eb415b0139543e325ab59"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "static_assertions",
 ]
 
@@ -391,3 +460,9 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "wyz"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"
diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index e64608e..6f273aa 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -7,6 +7,7 @@ edition = "2018"
 
 [dependencies]
 chrono = { version = "0.4.19", features = ["serde"] }
+nom = "6.2.1"
 rust_decimal = { version = "1.15.0", features = ["serde-arbitrary-precision"] }
 serde = { version = "1.0.126", features = ["derive"] }
 serde_json = "1.0.64"
diff --git a/cli/src/search.rs b/cli/src/search.rs
index d140caf..b11ee78 100644
--- a/cli/src/search.rs
+++ b/cli/src/search.rs
@@ -1,4 +1,5 @@
 use chrono::{naive::NaiveDate, Duration};
+use nom::{branch::alt, character::complete::char, combinator::map, sequence::tuple};
 use rust_decimal::Decimal;
 use std::str::FromStr;
 
@@ -98,6 +99,10 @@ impl Constraint {
             }
         }
     }
+
+    fn parse(i: &str) -> nom::IResult<&str, Self> {
+        todo!()
+    }
 }
 
 #[derive(Clone)]
@@ -107,6 +112,28 @@ pub enum Filter {
     Subtract(Constraint),
 }
 
+impl Filter {
+    fn parse(i: &str) -> nom::IResult<&str, Self> {
+        alt((
+            map(
+                tuple((
+                    char('+'),
+                    Constraint::parse,
+                )),
+                |(_, constraint)| Filter::Union(constraint)
+            ),
+            map(
+                tuple((
+                    char('-'),
+                    Constraint::parse,
+                )),
+                |(_, constraint)| Filter::Subtract(constraint)
+            ),
+            map(Constraint::parse, Filter::Intersect),
+        ))(i)
+    }
+}
+
 #[derive(Clone)]
 pub struct Search<'t> {
     filtered: Vec<usize>,
-- 
cgit v1.2.1