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lang: parse pipelines

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This commit is contained in:
Schrottkatze 2024-05-04 21:44:02 +02:00
parent 30f17773a8
commit afd493be16
Signed by: schrottkatze
SSH key fingerprint: SHA256:hXb3t1vINBFCiDCmhRABHX5ocdbLiKyCdKI4HK2Rbbc
3 changed files with 48 additions and 38 deletions
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39
crates/lang/src/lst_parser/grammar/expression.rs
View file

@ -5,44 +5,7 @@ use self::{collection::collection, instruction::instr, lit::literal, pipeline::P
mod collection;
mod instruction;
mod lit;
mod pipeline {
use enumset::enum_set;
use crate::lst_parser::{
error::SyntaxError,
syntax_kind::{SyntaxKind::*, TokenSet},
CompletedMarker, Parser,
};
use super::expression;
pub fn pipeline(p: &mut Parser, start_expr: CompletedMarker) -> Option<CompletedMarker> {
if !pipe(p) {
return Some(start_expr);
}
let pipeline_marker = start_expr.precede(p, "pipeline_start");
loop {
if expression(p, true).is_none() {
return Some(pipeline_marker.complete_err(p, SyntaxError::PipelineNeedsSink));
}
if !pipe(p) {
return Some(pipeline_marker.complete(p, PIPELINE));
}
}
}
pub const PIPES: TokenSet = enum_set!(PIPE | MAPPING_PIPE | NULL_PIPE);
fn pipe(p: &mut Parser) -> bool {
if PIPES.contains(p.current()) {
p.do_bump();
true
} else {
false
}
}
}
mod pipeline;
pub fn expression(p: &mut Parser, in_pipe: bool) -> Option<CompletedMarker> {
let expr = p.start("expr");

36
crates/lang/src/lst_parser/grammar/expression/pipeline.rs Normal file
View file

@ -0,0 +1,36 @@
use enumset::enum_set;
use crate::lst_parser::{
error::SyntaxError,
syntax_kind::{SyntaxKind::*, TokenSet},
CompletedMarker, Parser,
};
use super::expression;
pub fn pipeline(p: &mut Parser, start_expr: CompletedMarker) -> Option<CompletedMarker> {
if !pipe(p) {
return Some(start_expr);
}
let pipeline_marker = start_expr.precede(p, "pipeline_start");
loop {
if expression(p, true).is_none() {
return Some(pipeline_marker.complete_err(p, SyntaxError::PipelineNeedsSink));
}
if !pipe(p) {
return Some(pipeline_marker.complete(p, PIPELINE));
}
}
}
pub const PIPES: TokenSet = enum_set!(PIPE | MAPPING_PIPE | NULL_PIPE);
fn pipe(p: &mut Parser) -> bool {
if PIPES.contains(p.current()) {
p.do_bump();
true
} else {
false
}
}