})
}
+/// `SeqSep` : a sequence separator (token)
+/// and whether a trailing separator is allowed.
+pub struct SeqSep {
+ pub sep: Option<token::Token>,
+ pub trailing_sep_allowed: bool,
+}
+
+impl SeqSep {
+ pub fn trailing_allowed(t: token::Token) -> SeqSep {
+ SeqSep {
+ sep: Some(t),
+ trailing_sep_allowed: true,
+ }
+ }
+
+ pub fn none() -> SeqSep {
+ SeqSep {
+ sep: None,
+ trailing_sep_allowed: false,
+ }
+ }
+}
+
#[cfg(test)]
mod tests {
use super::*;
- use syntax_pos::{self, Span, BytePos, Pos, NO_EXPANSION};
- use codemap::{respan, Spanned};
+ use syntax_pos::{Span, BytePos, Pos, NO_EXPANSION};
use ast::{self, Ident, PatKind};
- use rustc_target::spec::abi::Abi;
use attr::first_attr_value_str_by_name;
use parse;
- use parse::parser::Parser;
use print::pprust::item_to_string;
- use ptr::P;
use tokenstream::{self, TokenTree};
- use util::parser_testing::{string_to_stream, string_to_parser};
- use util::parser_testing::{string_to_expr, string_to_item, string_to_stmt};
- use util::ThinVec;
+ use util::parser_testing::string_to_stream;
+ use util::parser_testing::{string_to_expr, string_to_item};
use with_globals;
// produce a syntax_pos::span
Span::new(BytePos(a), BytePos(b), NO_EXPANSION)
}
- fn str2seg(s: &str, lo: u32, hi: u32) -> ast::PathSegment {
- ast::PathSegment::from_ident(Ident::new(Symbol::intern(s), sp(lo, hi)))
- }
-
- #[test] fn path_exprs_1() {
- with_globals(|| {
- assert!(string_to_expr("a".to_string()) ==
- P(ast::Expr{
- id: ast::DUMMY_NODE_ID,
- node: ast::ExprKind::Path(None, ast::Path {
- span: sp(0, 1),
- segments: vec![str2seg("a", 0, 1)],
- }),
- span: sp(0, 1),
- attrs: ThinVec::new(),
- }))
- })
- }
-
- #[test] fn path_exprs_2 () {
- with_globals(|| {
- assert!(string_to_expr("::a::b".to_string()) ==
- P(ast::Expr {
- id: ast::DUMMY_NODE_ID,
- node: ast::ExprKind::Path(None, ast::Path {
- span: sp(0, 6),
- segments: vec![ast::PathSegment::crate_root(sp(0, 0)),
- str2seg("a", 2, 3),
- str2seg("b", 5, 6)]
- }),
- span: sp(0, 6),
- attrs: ThinVec::new(),
- }))
- })
- }
-
#[should_panic]
#[test] fn bad_path_expr_1() {
with_globals(|| {
})
}
- #[test] fn ret_expr() {
- with_globals(|| {
- assert!(string_to_expr("return d".to_string()) ==
- P(ast::Expr{
- id: ast::DUMMY_NODE_ID,
- node:ast::ExprKind::Ret(Some(P(ast::Expr{
- id: ast::DUMMY_NODE_ID,
- node:ast::ExprKind::Path(None, ast::Path{
- span: sp(7, 8),
- segments: vec![str2seg("d", 7, 8)],
- }),
- span:sp(7,8),
- attrs: ThinVec::new(),
- }))),
- span:sp(0,8),
- attrs: ThinVec::new(),
- }))
- })
- }
-
- #[test] fn parse_stmt_1 () {
- with_globals(|| {
- assert!(string_to_stmt("b;".to_string()) ==
- Some(ast::Stmt {
- node: ast::StmtKind::Expr(P(ast::Expr {
- id: ast::DUMMY_NODE_ID,
- node: ast::ExprKind::Path(None, ast::Path {
- span:sp(0,1),
- segments: vec![str2seg("b", 0, 1)],
- }),
- span: sp(0,1),
- attrs: ThinVec::new()})),
- id: ast::DUMMY_NODE_ID,
- span: sp(0,1)}))
- })
- }
-
- fn parser_done(p: Parser){
- assert_eq!(p.token.clone(), token::Eof);
- }
-
- #[test] fn parse_ident_pat () {
- with_globals(|| {
- let sess = ParseSess::new(FilePathMapping::empty());
- let mut parser = string_to_parser(&sess, "b".to_string());
- assert!(panictry!(parser.parse_pat())
- == P(ast::Pat{
- id: ast::DUMMY_NODE_ID,
- node: PatKind::Ident(ast::BindingMode::ByValue(ast::Mutability::Immutable),
- Ident::new(Symbol::intern("b"), sp(0, 1)),
- None),
- span: sp(0,1)}));
- parser_done(parser);
- })
- }
-
- // check the contents of the tt manually:
- #[test] fn parse_fundecl () {
- with_globals(|| {
- // this test depends on the intern order of "fn" and "i32"
- let item = string_to_item("fn a (b : i32) { b; }".to_string()).map(|m| {
- m.map(|mut m| {
- m.tokens = None;
- m
- })
- });
- assert_eq!(item,
- Some(
- P(ast::Item{ident:Ident::from_str("a"),
- attrs:Vec::new(),
- id: ast::DUMMY_NODE_ID,
- tokens: None,
- node: ast::ItemKind::Fn(P(ast::FnDecl {
- inputs: vec![ast::Arg{
- ty: P(ast::Ty{id: ast::DUMMY_NODE_ID,
- node: ast::TyKind::Path(None, ast::Path{
- span:sp(10,13),
- segments: vec![str2seg("i32", 10, 13)],
- }),
- span:sp(10,13)
- }),
- pat: P(ast::Pat {
- id: ast::DUMMY_NODE_ID,
- node: PatKind::Ident(
- ast::BindingMode::ByValue(
- ast::Mutability::Immutable),
- Ident::new(Symbol::intern("b"), sp(6, 7)),
- None
- ),
- span: sp(6,7)
- }),
- id: ast::DUMMY_NODE_ID
- }],
- output: ast::FunctionRetTy::Default(sp(15, 15)),
- variadic: false
- }),
- ast::FnHeader {
- unsafety: ast::Unsafety::Normal,
- asyncness: ast::IsAsync::NotAsync,
- constness: Spanned {
- span: sp(0,2),
- node: ast::Constness::NotConst,
- },
- abi: Abi::Rust,
- },
- ast::Generics{
- params: Vec::new(),
- where_clause: ast::WhereClause {
- id: ast::DUMMY_NODE_ID,
- predicates: Vec::new(),
- span: syntax_pos::DUMMY_SP,
- },
- span: syntax_pos::DUMMY_SP,
- },
- P(ast::Block {
- stmts: vec![ast::Stmt {
- node: ast::StmtKind::Semi(P(ast::Expr{
- id: ast::DUMMY_NODE_ID,
- node: ast::ExprKind::Path(None,
- ast::Path{
- span:sp(17,18),
- segments: vec![str2seg("b", 17, 18)],
- }),
- span: sp(17,18),
- attrs: ThinVec::new()})),
- id: ast::DUMMY_NODE_ID,
- span: sp(17,19)}],
- id: ast::DUMMY_NODE_ID,
- rules: ast::BlockCheckMode::Default, // no idea
- span: sp(15,21),
- recovered: false,
- })),
- vis: respan(sp(0, 0), ast::VisibilityKind::Inherited),
- span: sp(0,21)})));
- })
- }
-
#[test] fn parse_use() {
with_globals(|| {
let use_s = "use foo::bar::baz;";
});
}
}
-
-/// `SeqSep` : a sequence separator (token)
-/// and whether a trailing separator is allowed.
-pub struct SeqSep {
- pub sep: Option<token::Token>,
- pub trailing_sep_allowed: bool,
-}
-
-impl SeqSep {
- pub fn trailing_allowed(t: token::Token) -> SeqSep {
- SeqSep {
- sep: Some(t),
- trailing_sep_allowed: true,
- }
- }
-
- pub fn none() -> SeqSep {
- SeqSep {
- sep: None,
- trailing_sep_allowed: false,
- }
- }
-}
projects / rust.git / blobdiff