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lang: add pipelines and rename parser to lst_parser

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This commit is contained in:
Schrottkatze 2024-04-30 12:21:06 +02:00
parent db2643359c
commit 30f17773a8
Signed by: schrottkatze
SSH key fingerprint: SHA256:hXb3t1vINBFCiDCmhRABHX5ocdbLiKyCdKI4HK2Rbbc
18 changed files with 108 additions and 47 deletions
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45
crates/lang/src/lst_parser/grammar/expression/collection/attr_set.rs Normal file
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@ -0,0 +1,45 @@
use crate::lst_parser::{
error::SyntaxError,
grammar::expression::{atom, expression},
CompletedMarker, Marker, Parser,
SyntaxKind::*,
};
pub fn attr_set(p: &mut Parser) -> CompletedMarker {
let start = p.start("attr_set_start");
assert!(p.eat(L_BRACE));
loop {
if attr(p).is_some() {
// TODO: handle others
if p.eat(COMMA) {
continue;
} else if p.eat(R_BRACE) {
return start.complete(p, ATTR_SET);
}
// TODO: check for newline and stuff following that for recov of others
} else if p.eat(R_BRACE) {
return start.complete(p, ATTR_SET);
}
}
}
fn attr(p: &mut Parser) -> Option<CompletedMarker> {
if p.at(IDENT) {
let attr_start = p.start("attr");
let attr_name_start = p.start("attr_name");
p.do_bump();
attr_name_start.complete(p, ATTR_NAME);
// TODO: handle comma, expr/atom, other
p.eat(COLON);
// TODO: handle failed expr parser too
let attr_value = p.start("attr_value");
let _ = expression(p, false);
attr_value.complete(p, ATTR_VALUE);
Some(attr_start.complete(p, ATTR))
} else {
None
}
}

73
crates/lang/src/lst_parser/grammar/expression/collection/vec.rs Normal file
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use crate::lst_parser::{
error::SyntaxError, grammar::expression::atom, CompletedMarker, Marker, Parser, SyntaxKind::*,
};
pub fn vec_matrix_list(p: &mut Parser) -> CompletedMarker {
let start = p.start("vec_matrix_list_start");
assert!(p.eat(L_BRACK));
let row_start = p.start("matrix_row_start");
if let Some(item) = atom(p) {
item.precede(p, "coll_item_start")
.complete(p, COLLECTION_ITEM);
if p.at(COMMA) {
row_start.abandon(p);
return finish_list(p, start);
}
finish_mat_or_vec(p, start, row_start)
} else if p.eat(R_BRACK) {
start.complete(p, LIST)
} else {
start.complete_err(p, SyntaxError::Expected(vec![EXPR, R_BRACK]))
}
}
// TODO: handle semicolons, other wrong toks
fn finish_list(p: &mut Parser, list_start: Marker) -> CompletedMarker {
loop {
if p.eat(COMMA) {
if let Some(item) = atom(p) {
item.precede(p, "coll_item_start")
.complete(p, COLLECTION_ITEM);
} else if p.eat(R_BRACK) {
return list_start.complete(p, LIST);
}
} else if p.eat(R_BRACK) {
return list_start.complete(p, LIST);
}
}
}
// TODO: handle commas, general other wrong toks
fn finish_mat_or_vec(p: &mut Parser, coll_start: Marker, mut row_start: Marker) -> CompletedMarker {
let mut is_matrix = false;
let mut row_item_count = 1;
loop {
if let Some(item) = atom(p) {
item.precede(p, "coll_item_start")
.complete(p, COLLECTION_ITEM);
row_item_count += 1;
} else if p.at(SEMICOLON) {
is_matrix = true;
row_start.complete(p, MAT_ROW);
p.eat(SEMICOLON);
row_start = p.start("matrix_row_start");
row_item_count = 0;
} else if p.at(R_BRACK) {
if is_matrix && row_item_count == 0 {
row_start.abandon(p);
p.eat(R_BRACK);
return coll_start.complete(p, MATRIX);
} else if is_matrix {
row_start.complete(p, MAT_ROW);
p.eat(R_BRACK);
return coll_start.complete(p, MATRIX);
} else {
row_start.abandon(p);
p.eat(R_BRACK);
return coll_start.complete(p, VEC);
}
}
}
}