mirror of
https://github.com/danbulant/rush
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getting started on parser
This commit is contained in:
Daniel Bulant
parent
6847c92997
commit
dfbc6ecf17
7 changed files with 617 additions and 33 deletions
406
Cargo.lock
generated
406
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@ -1,6 +1,6 @@
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|
||||
[[package]]
|
||||
name = "stacker"
|
||||
version = "0.1.20"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "601f9201feb9b09c00266478bf459952b9ef9a6b94edb2f21eba14ab681a60a9"
|
||||
dependencies = [
|
||||
"cc",
|
||||
"cfg-if",
|
||||
"libc",
|
||||
"psm",
|
||||
"windows-sys 0.59.0",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "strsim"
|
||||
version = "0.10.0"
|
||||
|
|
@ -313,6 +582,24 @@ dependencies = [
|
|||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-ident"
|
||||
version = "1.0.18"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-segmentation"
|
||||
version = "1.12.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f6ccf251212114b54433ec949fd6a7841275f9ada20dddd2f29e9ceea4501493"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-width"
|
||||
version = "0.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1fc81956842c57dac11422a97c3b8195a1ff727f06e85c84ed2e8aa277c9a0fd"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-xid"
|
||||
version = "0.2.2"
|
||||
|
|
@ -328,6 +615,12 @@ dependencies = [
|
|||
"arrayvec",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "utf8parse"
|
||||
version = "0.2.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.3.9"
|
||||
|
|
@ -365,7 +658,16 @@ version = "0.48.0"
|
|||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
|
||||
dependencies = [
|
||||
"windows-targets",
|
||||
"windows-targets 0.48.1",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.59.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
|
||||
dependencies = [
|
||||
"windows-targets 0.52.6",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
|
|
@ -374,13 +676,29 @@ version = "0.48.1"
|
|||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "05d4b17490f70499f20b9e791dcf6a299785ce8af4d709018206dc5b4953e95f"
|
||||
dependencies = [
|
||||
"windows_aarch64_gnullvm",
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_gnullvm",
|
||||
"windows_x86_64_msvc",
|
||||
"windows_aarch64_gnullvm 0.48.0",
|
||||
"windows_aarch64_msvc 0.48.0",
|
||||
"windows_i686_gnu 0.48.0",
|
||||
"windows_i686_msvc 0.48.0",
|
||||
"windows_x86_64_gnu 0.48.0",
|
||||
"windows_x86_64_gnullvm 0.48.0",
|
||||
"windows_x86_64_msvc 0.48.0",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-targets"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
|
||||
dependencies = [
|
||||
"windows_aarch64_gnullvm 0.52.6",
|
||||
"windows_aarch64_msvc 0.52.6",
|
||||
"windows_i686_gnu 0.52.6",
|
||||
"windows_i686_gnullvm",
|
||||
"windows_i686_msvc 0.52.6",
|
||||
"windows_x86_64_gnu 0.52.6",
|
||||
"windows_x86_64_gnullvm 0.52.6",
|
||||
"windows_x86_64_msvc 0.52.6",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
|
|
@ -389,38 +707,86 @@ version = "0.48.0"
|
|||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
|
||||
version = "0.48.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.48.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.48.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.48.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.48.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.48.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
|
||||
|
|
|
|||
|
|
@ -13,6 +13,8 @@ termion = "1.5.6"
|
|||
filedescriptor = "0.8.1"
|
||||
clap = "3.1.0"
|
||||
os_pipe = "1.1.4"
|
||||
chumsky = "0.10.0"
|
||||
rustyline = "15.0.0"
|
||||
|
||||
[dependencies.anyhow]
|
||||
version = "1.0.54"
|
||||
|
|
|
|||
18
README.md
18
README.md
|
|
@ -7,8 +7,8 @@ In case you're reading this: rush is in the works and not a priority. Features m
|
|||
### Syntax
|
||||
|
||||
```sh
|
||||
let thing = var
|
||||
let thing = (echo test)
|
||||
set thing = var
|
||||
set thing = (echo test)
|
||||
echo test | cowsay
|
||||
parse file.csv
|
||||
parse file.csv | sort 2 asc
|
||||
|
|
@ -42,25 +42,29 @@ while true {
|
|||
|
||||
loop {}
|
||||
|
||||
fn test (arg) {
|
||||
echo $arg
|
||||
}
|
||||
|
||||
# do we error if array literal is used directly in exec call?
|
||||
# as that would likely be a mistake like $i [property]
|
||||
echo $i[property] $i[$dynamicproperty]
|
||||
|
||||
# or another option - array constructor with a different syntax
|
||||
# like @[ ] [[ ]]
|
||||
let array = [var]
|
||||
set array = [var]
|
||||
# question here, do we allow multiline values? How? \ ?
|
||||
# or the more classic comma `,` for separating values and ignoring white space?
|
||||
# this is easier to write so might be preferred for very short scripting lang
|
||||
let obj = ${
|
||||
set obj = ${
|
||||
key: value
|
||||
$dynkey: $value2
|
||||
}
|
||||
let literal = "$var"
|
||||
set literal = "$var"
|
||||
# or perhaps ` ?
|
||||
let formatted = f"$var"
|
||||
set formatted = f"$var"
|
||||
|
||||
# these are builtin commands rather than syntax structures (unlike let/while etc)
|
||||
# these are builtin commands rather than syntax structures (unlike set/while etc)
|
||||
# they simply accept arguments and work with them as with any other
|
||||
# builtin commands accept structures rather than strings
|
||||
test 1 = 1
|
||||
|
|
|
|||
13
src/main.rs
13
src/main.rs
|
|
@ -1,3 +1,14 @@
|
|||
use std::io::Read;
|
||||
use chumsky::Parser;
|
||||
|
||||
mod parser;
|
||||
|
||||
fn main() {
|
||||
|
||||
let mut file = std::fs::File::open("./test/parsetest.rush").expect("Unable to open file");
|
||||
let mut string = String::new();
|
||||
file.read_to_string(&mut string).unwrap();
|
||||
|
||||
dbg!(&string);
|
||||
|
||||
println!("{:?}", parser::parse().parse(&string));
|
||||
}
|
||||
191
src/parser.rs
Normal file
191
src/parser.rs
Normal file
|
|
@ -0,0 +1,191 @@
|
|||
use chumsky::{error::{EmptyErr, Rich, Simple}, prelude::{choice, just, none_of, one_of, recursive}, text, IterParser, Parser};
|
||||
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
struct Index {
|
||||
value: Box<Value>,
|
||||
index: Box<Value>
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
enum Primitive {
|
||||
Number(f64),
|
||||
String(String),
|
||||
Variable(String),
|
||||
Index(Index)
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
enum Bindable {
|
||||
Primitive(Primitive),
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
struct Command {
|
||||
name: Box<Value>,
|
||||
args: Vec<Value>
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
struct Set {
|
||||
name: Box<Bindable>,
|
||||
value: Box<Value>
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
struct If {
|
||||
condition: Box<Command>,
|
||||
body: Vec<Statement>,
|
||||
else_body: Option<Vec<Statement>>
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
struct While {
|
||||
condition: Box<Command>,
|
||||
body: Vec<Statement>,
|
||||
else_body: Option<Vec<Statement>>
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
struct For {
|
||||
name: Box<Bindable>,
|
||||
iterable: Box<Value>,
|
||||
body: Vec<Statement>,
|
||||
else_body: Option<Vec<Statement>>
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
struct Loop {
|
||||
body: Vec<Statement>
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
pub enum Statement {
|
||||
Command(Command),
|
||||
Set(Set),
|
||||
For(For),
|
||||
While(While),
|
||||
If(If),
|
||||
Loop(Loop),
|
||||
Break
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
enum Value {
|
||||
Primitive(Primitive),
|
||||
Group(Vec<Statement>)
|
||||
}
|
||||
|
||||
pub fn parse<'a>() -> impl Parser<'a, &'a str, Vec<Statement>, chumsky::extra::Default> {
|
||||
// let ident = text::ident::<&'a str, chumsky::extra::Default>();
|
||||
let digits = text::digits(10).to_slice();
|
||||
|
||||
let frac = just('.').then(digits);
|
||||
|
||||
let exp = just('e')
|
||||
.or(just('E'))
|
||||
.then(one_of("+-").or_not())
|
||||
.then(digits);
|
||||
|
||||
let number = just('-')
|
||||
.or_not()
|
||||
.then(text::int(10))
|
||||
.then(frac.or_not())
|
||||
.then(exp.or_not())
|
||||
.to_slice()
|
||||
.map(|s: &str| s.parse().unwrap())
|
||||
.boxed();
|
||||
// let op = |c| just(c).padded();
|
||||
|
||||
let escape = just('\\')
|
||||
.then(choice((
|
||||
just('\\'),
|
||||
just('/'),
|
||||
just('"'),
|
||||
just('b').to('\x08'),
|
||||
just('f').to('\x0C'),
|
||||
just('n').to('\n'),
|
||||
just('r').to('\r'),
|
||||
just('t').to('\t'),
|
||||
just('u').ignore_then(text::digits(16).exactly(4).to_slice().validate(
|
||||
|digits, e, emitter| {
|
||||
char::from_u32(u32::from_str_radix(digits, 16).unwrap()).unwrap_or_else(
|
||||
|| {
|
||||
// emitter.emit(Rich::custom(e.span(), "invalid unicode character"));
|
||||
'\u{FFFD}' // unicode replacement character
|
||||
},
|
||||
)
|
||||
},
|
||||
)),
|
||||
)))
|
||||
.ignored()
|
||||
.boxed();
|
||||
|
||||
let direct_string = none_of("$()[]{}\\\"\n;")
|
||||
.and_is(text::whitespace().at_least(1).not())
|
||||
.ignored()
|
||||
.or(escape.clone())
|
||||
.repeated()
|
||||
.at_least(1)
|
||||
.to_slice()
|
||||
.map(ToString::to_string)
|
||||
.boxed();
|
||||
|
||||
let delimited_string = none_of("\\\"")
|
||||
.ignored()
|
||||
.or(escape)
|
||||
.repeated()
|
||||
.to_slice()
|
||||
.map(ToString::to_string)
|
||||
.delimited_by(just('"'), just('"'))
|
||||
.boxed();
|
||||
|
||||
let string = choice((
|
||||
delimited_string.clone(),
|
||||
direct_string.clone(),
|
||||
));
|
||||
let eol = one_of("\n\r;");
|
||||
// let r#break = just("break").map(|_| Statement::Break);
|
||||
|
||||
let variable = just('$').ignore_then(text::ident());
|
||||
|
||||
recursive(|expr| {
|
||||
let primitive = choice((
|
||||
number.map(Primitive::Number),
|
||||
variable.map(|s: &str| Primitive::Variable(s.to_string())),
|
||||
string.map(Primitive::String),
|
||||
));
|
||||
|
||||
let bindable = primitive.clone();
|
||||
|
||||
let group = just('(')
|
||||
.ignore_then(expr.clone())
|
||||
.then_ignore(just(')'))
|
||||
.map(|v| Value::Group(v));
|
||||
|
||||
let value = choice((
|
||||
group,
|
||||
primitive.map(Value::Primitive),
|
||||
));
|
||||
|
||||
let command = value
|
||||
.separated_by(text::whitespace().at_least(1))
|
||||
.at_least(1)
|
||||
.allow_trailing()
|
||||
.allow_leading()
|
||||
.collect()
|
||||
.map(|args: Vec<Value>| {
|
||||
let name = args[0].clone();
|
||||
let args = args[1..].to_vec();
|
||||
|
||||
Command {
|
||||
name: Box::new(name),
|
||||
args: args.into_iter().map(|v| v.clone()).collect()
|
||||
}
|
||||
});
|
||||
|
||||
let statement = command.map(Statement::Command);
|
||||
|
||||
statement.separated_by(eol).at_least(1).collect()
|
||||
})
|
||||
}
|
||||
19
syntax.deg
19
syntax.deg
|
|
@ -17,16 +17,25 @@ BINDABLE = PRIMITIVE_VALUES
|
|||
|
||||
VALUE = PRIMITIVE_VALUES | GROUP
|
||||
|
||||
GROUP = "(" COMMAND ")"
|
||||
# statements are expressions, so it is possible to write `echo (if true { echo true } else { echo false })`
|
||||
GROUP = "(" STATEMENT ")"
|
||||
|
||||
COMMAND = ( VALUE WHITESPACE ) +
|
||||
# no padding can be here, must be TEXT=VALUE
|
||||
ENV_VAR_SPECIFICATION = STRING = VALUE
|
||||
|
||||
LET = let BINDABLE = VALUE
|
||||
COMMAND = ( ENV_VAR_SPECIFICATION WHITESPACE ) * ( VALUE WHITESPACE ) +
|
||||
|
||||
FOR = for BINDABLE in VALUE { STATEMENTS }
|
||||
# in the future this could also support other ops like add+set
|
||||
SET = set BINDABLE = VALUE
|
||||
|
||||
FUNCTION = fn STRING "(" ( BINDABLE , )* BINDABLE ")" { STATEMENTS }
|
||||
|
||||
FOR = for BINDABLE in VALUE { STATEMENTS } ( else { STATEMENTS } )?
|
||||
IF = if VALUE { STATEMENTS } ( else if VALUE { STATEMENTS } ) * ( else { STATEMENTS } )?
|
||||
WHILE = while VALUE { STATEMENTS } ( else { STATEMENTS } )?
|
||||
LOOP = loop { STATEMENTS }
|
||||
|
||||
STATEMENT = COMMAND | LET | FOR | IF | WHILE | LOOP
|
||||
BREAK = break
|
||||
|
||||
STATEMENT = COMMAND | SET | FOR | IF | WHILE | LOOP | FUNCTION | BREAK
|
||||
STATEMENTS = ( STATEMENT (; | EOL) )* STATEMENT?
|
||||
1
test/parsetest.rush
Normal file
1
test/parsetest.rush
Normal file
|
|
@ -0,0 +1 @@
|
|||
test ( test 2 )
|
||||
Loading…
Reference in a new issue