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Move struct parsing to a separate module

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This commit is contained in:
Aleksey Kladov 2018-01-28 17:46:30 +03:00
parent 08def60f16
commit 7e55b2693f
2 changed files with 86 additions and 83 deletions
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86
src/parser/event_parser/grammar/items.rs → src/parser/event_parser/grammar/items/mod.rs
View file

@ -1,5 +1,7 @@
use super::*;
mod structs;
pub(super) fn mod_contents(p: &mut Parser, stop_on_r_curly: bool) {
attributes::inner_attributes(p);
while !p.at(EOF) && !(stop_on_r_curly && p.at(R_CURLY)) {
@ -29,7 +31,7 @@ fn item(p: &mut Parser) {
USE_ITEM
}
STRUCT_KW => {
struct_item(p);
structs::struct_item(p);
STRUCT_ITEM
}
FN_KW => {
@ -57,88 +59,6 @@ fn item(p: &mut Parser) {
item.complete(p, item_kind);
}
fn struct_item(p: &mut Parser) {
assert!(p.at(STRUCT_KW));
p.bump();
if !p.expect(IDENT) {
return;
}
generic_parameters(p);
match p.current() {
WHERE_KW => {
where_clause(p);
match p.current() {
SEMI => {
p.bump();
return;
}
L_CURLY => named_fields(p),
_ => {
//TODO: special case `(` error message
p.error().message("expected `;` or `{`").emit();
return;
}
}
}
SEMI => {
p.bump();
return;
}
L_CURLY => named_fields(p),
L_PAREN => {
pos_fields(p);
p.expect(SEMI);
}
_ => {
p.error().message("expected `;`, `{`, or `(`").emit();
return;
}
}
}
fn named_fields(p: &mut Parser) {
assert!(p.at(L_CURLY));
p.bump();
while !p.at(R_CURLY) && !p.at(EOF) {
named_field(p);
if !p.at(R_CURLY) {
p.expect(COMMA);
}
}
p.expect(R_CURLY);
fn named_field(p: &mut Parser) {
let field = p.start();
visibility(p);
if p.expect(IDENT) {
p.expect(COLON);
types::type_ref(p);
field.complete(p, NAMED_FIELD);
} else {
field.abandon(p);
p.err_and_bump("expected field declaration");
}
}
}
fn pos_fields(p: &mut Parser) {
if !p.expect(L_PAREN) {
return;
}
while !p.at(R_PAREN) && !p.at(EOF) {
let pos_field = p.start();
visibility(p);
types::type_ref(p);
pos_field.complete(p, POS_FIELD);
if !p.at(R_PAREN) {
p.expect(COMMA);
}
}
p.expect(R_PAREN);
}
fn generic_parameters(_: &mut Parser) {}
fn where_clause(_: &mut Parser) {}

83
src/parser/event_parser/grammar/items/structs.rs Normal file
View file

@ -0,0 +1,83 @@
use super::*;
pub(super) fn struct_item(p: &mut Parser) {
assert!(p.at(STRUCT_KW));
p.bump();
if !p.expect(IDENT) {
return;
}
generic_parameters(p);
match p.current() {
WHERE_KW => {
where_clause(p);
match p.current() {
SEMI => {
p.bump();
return;
}
L_CURLY => named_fields(p),
_ => {
//TODO: special case `(` error message
p.error().message("expected `;` or `{`").emit();
return;
}
}
}
SEMI => {
p.bump();
return;
}
L_CURLY => named_fields(p),
L_PAREN => {
pos_fields(p);
p.expect(SEMI);
}
_ => {
p.error().message("expected `;`, `{`, or `(`").emit();
return;
}
}
}
fn named_fields(p: &mut Parser) {
assert!(p.at(L_CURLY));
p.bump();
while !p.at(R_CURLY) && !p.at(EOF) {
named_field(p);
if !p.at(R_CURLY) {
p.expect(COMMA);
}
}
p.expect(R_CURLY);
fn named_field(p: &mut Parser) {
let field = p.start();
visibility(p);
if p.expect(IDENT) {
p.expect(COLON);
types::type_ref(p);
field.complete(p, NAMED_FIELD);
} else {
field.abandon(p);
p.err_and_bump("expected field declaration");
}
}
}
fn pos_fields(p: &mut Parser) {
if !p.expect(L_PAREN) {
return;
}
while !p.at(R_PAREN) && !p.at(EOF) {
let pos_field = p.start();
visibility(p);
types::type_ref(p);
pos_field.complete(p, POS_FIELD);
if !p.at(R_PAREN) {
p.expect(COMMA);
}
}
p.expect(R_PAREN);
}