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synced 2024-11-21 21:24:41 +01:00
lang: implement vec, list and matrix
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8a541546d9
commit
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@ -5,13 +5,12 @@ use crate::parser::{
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CompletedMarker, Parser,
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};
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use self::{attr_set::attr_set, matrix::matrix, vec::vec};
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use self::{attr_set::attr_set, vec::vec_matrix_list};
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mod attr_set;
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mod matrix;
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mod vec;
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const COLLECTION_START: TokenSet = enum_set!(MAT_KW | L_BRACK | L_BRACE);
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const COLLECTION_START: TokenSet = enum_set!(L_BRACK | L_BRACE);
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pub fn collection(p: &mut Parser) -> Option<CompletedMarker> {
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if !COLLECTION_START.contains(p.current()) {
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@ -19,8 +18,7 @@ pub fn collection(p: &mut Parser) -> Option<CompletedMarker> {
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}
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Some(match p.current() {
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MAT_KW => matrix(p),
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L_BRACK => vec(p),
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L_BRACK => vec_matrix_list(p),
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L_BRACE => attr_set(p),
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_ => unreachable!(),
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})
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@ -1,71 +0,0 @@
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use crate::parser::{
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error::SyntaxError,
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grammar::expression::{self, expression},
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syntax_kind::SyntaxKind::*,
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CompletedMarker, Marker, Parser,
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};
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pub fn matrix(p: &mut Parser) -> CompletedMarker {
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let matrix = p.start("matrix");
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p.eat(MAT_KW);
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if !p.eat(PAT_DIMENSIONS) {
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eprintln!("TODO (as eprintln so i dont forget): improve recovery algorithms");
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return matrix.complete_err(p, SyntaxError::Expected(vec![PAT_DIMENSIONS]));
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}
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matrix_body(p);
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matrix.complete(p, MATRIX)
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}
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fn matrix_body(p: &mut Parser) {
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let mat_body = p.start("mat_body");
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if !p.eat(L_BRACK) {
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mat_body.complete_err(p, SyntaxError::Expected(vec![MAT_BODY]));
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return ();
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}
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let mut going = true;
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let mut mat_row = p.start("mat_row");
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let mut row_items = 0;
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while going {
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let mat_item = p.start("mat_item");
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if expression(p).is_some() {
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mat_item.complete(p, MAT_ITEM);
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row_items += 1;
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match p.current() {
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COMMA => p.do_bump(),
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SEMICOLON => {
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mat_row.complete(p, MAT_ROW);
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mat_row = p.start("mat_row");
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p.do_bump();
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row_items = 0;
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}
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R_BRACK => going = false,
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_ => {
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let err = p.start("err");
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p.do_bump();
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err.complete_err(p, SyntaxError::Expected(vec![COMMA, SEMICOLON, R_BRACK]));
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}
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};
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} else if p.at(R_BRACK) {
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mat_item.abandon(p);
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going = false;
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} else {
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mat_item.abandon(p);
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let err = p.start("err");
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p.do_bump();
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err.complete_err(p, SyntaxError::Expected(vec![EXPR, R_BRACK]));
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}
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}
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if row_items != 0 {
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mat_row.complete(p, MAT_ROW);
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} else {
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mat_row.abandon(p);
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}
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p.eat(R_BRACK);
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mat_body.complete(p, MAT_BODY);
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}
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@ -1,5 +1,70 @@
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use crate::parser::{CompletedMarker, Parser};
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use crate::parser::{
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error::SyntaxError, grammar::expression::atom, CompletedMarker, Marker, Parser, SyntaxKind::*,
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};
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pub fn vec(p: &mut Parser) -> CompletedMarker {
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todo!()
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pub fn vec_matrix_list(p: &mut Parser) -> CompletedMarker {
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let start = p.start("vec_matrix_list_start");
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assert!(p.eat(L_BRACK));
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let row_start = p.start("matrix_row_start");
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if let Some(item) = atom(p) {
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item.precede(p).complete(p, COLLECTION_ITEM);
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if p.at(COMMA) {
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row_start.abandon(p);
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return finish_list(p, start);
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}
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finish_mat_or_vec(p, start, row_start)
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} else if p.eat(R_BRACK) {
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start.complete(p, LIST)
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} else {
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start.complete_err(p, SyntaxError::Expected(vec![EXPR, R_BRACK]))
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}
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}
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// TODO: handle semicolons, other wrong toks
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fn finish_list(p: &mut Parser, list_start: Marker) -> CompletedMarker {
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loop {
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if p.eat(COMMA) {
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if let Some(item) = atom(p) {
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item.precede(p).complete(p, COLLECTION_ITEM);
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} else if p.eat(R_BRACK) {
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return list_start.complete(p, LIST);
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}
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} else if p.eat(R_BRACK) {
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return list_start.complete(p, LIST);
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}
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}
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}
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// TODO: handle commas, general other wrong toks
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fn finish_mat_or_vec(p: &mut Parser, coll_start: Marker, mut row_start: Marker) -> CompletedMarker {
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let mut is_matrix = false;
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let mut row_item_count = 1;
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loop {
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if let Some(item) = atom(p) {
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item.precede(p).complete(p, COLLECTION_ITEM);
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row_item_count += 1;
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} else if p.at(SEMICOLON) {
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is_matrix = true;
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row_start.complete(p, MAT_ROW);
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p.eat(SEMICOLON);
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row_start = p.start("matrix_row_start");
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row_item_count = 0;
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} else if p.at(R_BRACK) {
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if is_matrix && row_item_count == 0 {
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row_start.abandon(p);
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p.eat(R_BRACK);
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return coll_start.complete(p, MATRIX);
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} else if is_matrix {
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row_start.complete(p, MAT_ROW);
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p.eat(R_BRACK);
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return coll_start.complete(p, MATRIX);
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} else {
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row_start.abandon(p);
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p.eat(R_BRACK);
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return coll_start.complete(p, VEC);
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}
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}
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}
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}
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@ -1,6 +1,6 @@
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use crate::parser::{syntax_kind::SyntaxKind::*, CompletedMarker, Parser};
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use super::lit::literal;
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use super::{atom, lit::literal};
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pub fn instr(p: &mut Parser) -> Option<CompletedMarker> {
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if !p.at(IDENT) {
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@ -26,8 +26,8 @@ fn instr_name(p: &mut Parser) {
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}
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fn instr_params(p: &mut Parser) {
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if let Some(start) = literal(p) {
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while literal(p).is_some() {}
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if let Some(start) = atom(p) {
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while atom(p).is_some() {}
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start.precede(p).complete(p, INSTR_PARAMS);
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}
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@ -23,10 +23,6 @@ pub enum SyntaxKind {
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LET_KW,
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#[token("in")]
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IN_KW,
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#[token("mat")]
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MAT_KW,
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#[regex("[\\d]+x[\\d]+")]
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PAT_DIMENSIONS,
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#[regex("[\\d]+")]
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INT_NUM,
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#[regex("[+-]?([\\d]+\\.[\\d]*|[\\d]*\\.[\\d]+)")]
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@ -34,11 +30,12 @@ pub enum SyntaxKind {
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#[regex(r#""([^"\\]|\\["\\bnfrt]|u[a-fA-F0-9]{4})*""#)]
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STRING,
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MATRIX,
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MAT_BODY,
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MAT_ROW,
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MAT_ITEM,
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DECL,
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VEC,
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LIST,
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// either of a vec, a matrix or a list
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COLLECTION_ITEM,
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DECL,
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PARENTHESIZED_EXPR,
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EXPR,
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LITERAL,
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