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syntax: Move the AST from @T to Gc<T>

This commit is contained in:
Alex Crichton 2014-05-16 00:16:13 -07:00
parent 531ed3d599
commit 53ad426e92
41 changed files with 1269 additions and 1158 deletions

View file

@ -21,6 +21,8 @@ use parse::token::special_idents;
use parse::token::InternedString;
use parse::token;
use std::gc::Gc;
// Transitional reexports so qquote can find the paths it is looking for
mod syntax {
pub use ext;
@ -73,115 +75,129 @@ pub trait AstBuilder {
fn lifetime(&self, span: Span, ident: ast::Name) -> ast::Lifetime;
// statements
fn stmt_expr(&self, expr: @ast::Expr) -> @ast::Stmt;
fn stmt_let(&self, sp: Span, mutbl: bool, ident: ast::Ident, ex: @ast::Expr) -> @ast::Stmt;
fn stmt_expr(&self, expr: Gc<ast::Expr>) -> Gc<ast::Stmt>;
fn stmt_let(&self, sp: Span, mutbl: bool, ident: ast::Ident,
ex: Gc<ast::Expr>) -> Gc<ast::Stmt>;
fn stmt_let_typed(&self,
sp: Span,
mutbl: bool,
ident: ast::Ident,
typ: P<ast::Ty>,
ex: @ast::Expr)
-> @ast::Stmt;
ex: Gc<ast::Expr>)
-> Gc<ast::Stmt>;
// blocks
fn block(&self, span: Span, stmts: Vec<@ast::Stmt> , expr: Option<@ast::Expr>) -> P<ast::Block>;
fn block_expr(&self, expr: @ast::Expr) -> P<ast::Block>;
fn block(&self, span: Span, stmts: Vec<Gc<ast::Stmt>>,
expr: Option<Gc<ast::Expr>>) -> P<ast::Block>;
fn block_expr(&self, expr: Gc<ast::Expr>) -> P<ast::Block>;
fn block_all(&self, span: Span,
view_items: Vec<ast::ViewItem> ,
stmts: Vec<@ast::Stmt> ,
expr: Option<@ast::Expr>) -> P<ast::Block>;
stmts: Vec<Gc<ast::Stmt>> ,
expr: Option<Gc<ast::Expr>>) -> P<ast::Block>;
// expressions
fn expr(&self, span: Span, node: ast::Expr_) -> @ast::Expr;
fn expr_path(&self, path: ast::Path) -> @ast::Expr;
fn expr_ident(&self, span: Span, id: ast::Ident) -> @ast::Expr;
fn expr(&self, span: Span, node: ast::Expr_) -> Gc<ast::Expr>;
fn expr_path(&self, path: ast::Path) -> Gc<ast::Expr>;
fn expr_ident(&self, span: Span, id: ast::Ident) -> Gc<ast::Expr>;
fn expr_self(&self, span: Span) -> @ast::Expr;
fn expr_self(&self, span: Span) -> Gc<ast::Expr>;
fn expr_binary(&self, sp: Span, op: ast::BinOp,
lhs: @ast::Expr, rhs: @ast::Expr) -> @ast::Expr;
fn expr_deref(&self, sp: Span, e: @ast::Expr) -> @ast::Expr;
fn expr_unary(&self, sp: Span, op: ast::UnOp, e: @ast::Expr) -> @ast::Expr;
lhs: Gc<ast::Expr>, rhs: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn expr_deref(&self, sp: Span, e: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn expr_unary(&self, sp: Span, op: ast::UnOp, e: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn expr_managed(&self, sp: Span, e: @ast::Expr) -> @ast::Expr;
fn expr_addr_of(&self, sp: Span, e: @ast::Expr) -> @ast::Expr;
fn expr_mut_addr_of(&self, sp: Span, e: @ast::Expr) -> @ast::Expr;
fn expr_field_access(&self, span: Span, expr: @ast::Expr, ident: ast::Ident) -> @ast::Expr;
fn expr_call(&self, span: Span, expr: @ast::Expr, args: Vec<@ast::Expr> ) -> @ast::Expr;
fn expr_call_ident(&self, span: Span, id: ast::Ident, args: Vec<@ast::Expr> ) -> @ast::Expr;
fn expr_managed(&self, sp: Span, e: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn expr_addr_of(&self, sp: Span, e: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn expr_mut_addr_of(&self, sp: Span, e: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn expr_field_access(&self, span: Span, expr: Gc<ast::Expr>,
ident: ast::Ident) -> Gc<ast::Expr>;
fn expr_call(&self, span: Span, expr: Gc<ast::Expr>,
args: Vec<Gc<ast::Expr>>) -> Gc<ast::Expr>;
fn expr_call_ident(&self, span: Span, id: ast::Ident,
args: Vec<Gc<ast::Expr>>) -> Gc<ast::Expr>;
fn expr_call_global(&self, sp: Span, fn_path: Vec<ast::Ident> ,
args: Vec<@ast::Expr> ) -> @ast::Expr;
args: Vec<Gc<ast::Expr>>) -> Gc<ast::Expr>;
fn expr_method_call(&self, span: Span,
expr: @ast::Expr, ident: ast::Ident,
args: Vec<@ast::Expr> ) -> @ast::Expr;
fn expr_block(&self, b: P<ast::Block>) -> @ast::Expr;
fn expr_cast(&self, sp: Span, expr: @ast::Expr, ty: P<ast::Ty>) -> @ast::Expr;
expr: Gc<ast::Expr>, ident: ast::Ident,
args: Vec<Gc<ast::Expr>> ) -> Gc<ast::Expr>;
fn expr_block(&self, b: P<ast::Block>) -> Gc<ast::Expr>;
fn expr_cast(&self, sp: Span, expr: Gc<ast::Expr>,
ty: P<ast::Ty>) -> Gc<ast::Expr>;
fn field_imm(&self, span: Span, name: Ident, e: @ast::Expr) -> ast::Field;
fn expr_struct(&self, span: Span, path: ast::Path, fields: Vec<ast::Field> ) -> @ast::Expr;
fn expr_struct_ident(&self, span: Span, id: ast::Ident, fields: Vec<ast::Field> ) -> @ast::Expr;
fn field_imm(&self, span: Span, name: Ident, e: Gc<ast::Expr>) -> ast::Field;
fn expr_struct(&self, span: Span, path: ast::Path,
fields: Vec<ast::Field> ) -> Gc<ast::Expr>;
fn expr_struct_ident(&self, span: Span, id: ast::Ident,
fields: Vec<ast::Field> ) -> Gc<ast::Expr>;
fn expr_lit(&self, sp: Span, lit: ast::Lit_) -> @ast::Expr;
fn expr_lit(&self, sp: Span, lit: ast::Lit_) -> Gc<ast::Expr>;
fn expr_uint(&self, span: Span, i: uint) -> @ast::Expr;
fn expr_int(&self, sp: Span, i: int) -> @ast::Expr;
fn expr_u8(&self, sp: Span, u: u8) -> @ast::Expr;
fn expr_bool(&self, sp: Span, value: bool) -> @ast::Expr;
fn expr_uint(&self, span: Span, i: uint) -> Gc<ast::Expr>;
fn expr_int(&self, sp: Span, i: int) -> Gc<ast::Expr>;
fn expr_u8(&self, sp: Span, u: u8) -> Gc<ast::Expr>;
fn expr_bool(&self, sp: Span, value: bool) -> Gc<ast::Expr>;
fn expr_vstore(&self, sp: Span, expr: @ast::Expr, vst: ast::ExprVstore) -> @ast::Expr;
fn expr_vec(&self, sp: Span, exprs: Vec<@ast::Expr> ) -> @ast::Expr;
fn expr_vec_ng(&self, sp: Span) -> @ast::Expr;
fn expr_vec_slice(&self, sp: Span, exprs: Vec<@ast::Expr> ) -> @ast::Expr;
fn expr_str(&self, sp: Span, s: InternedString) -> @ast::Expr;
fn expr_str_uniq(&self, sp: Span, s: InternedString) -> @ast::Expr;
fn expr_vstore(&self, sp: Span, expr: Gc<ast::Expr>, vst: ast::ExprVstore) -> Gc<ast::Expr>;
fn expr_vec(&self, sp: Span, exprs: Vec<Gc<ast::Expr>> ) -> Gc<ast::Expr>;
fn expr_vec_ng(&self, sp: Span) -> Gc<ast::Expr>;
fn expr_vec_slice(&self, sp: Span, exprs: Vec<Gc<ast::Expr>> ) -> Gc<ast::Expr>;
fn expr_str(&self, sp: Span, s: InternedString) -> Gc<ast::Expr>;
fn expr_str_uniq(&self, sp: Span, s: InternedString) -> Gc<ast::Expr>;
fn expr_some(&self, sp: Span, expr: @ast::Expr) -> @ast::Expr;
fn expr_none(&self, sp: Span) -> @ast::Expr;
fn expr_some(&self, sp: Span, expr: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn expr_none(&self, sp: Span) -> Gc<ast::Expr>;
fn expr_fail(&self, span: Span, msg: InternedString) -> @ast::Expr;
fn expr_unreachable(&self, span: Span) -> @ast::Expr;
fn expr_fail(&self, span: Span, msg: InternedString) -> Gc<ast::Expr>;
fn expr_unreachable(&self, span: Span) -> Gc<ast::Expr>;
fn expr_ok(&self, span: Span, expr: @ast::Expr) -> @ast::Expr;
fn expr_err(&self, span: Span, expr: @ast::Expr) -> @ast::Expr;
fn expr_try(&self, span: Span, head: @ast::Expr) -> @ast::Expr;
fn expr_ok(&self, span: Span, expr: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn expr_err(&self, span: Span, expr: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn expr_try(&self, span: Span, head: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn pat(&self, span: Span, pat: ast::Pat_) -> @ast::Pat;
fn pat_wild(&self, span: Span) -> @ast::Pat;
fn pat_lit(&self, span: Span, expr: @ast::Expr) -> @ast::Pat;
fn pat_ident(&self, span: Span, ident: ast::Ident) -> @ast::Pat;
fn pat(&self, span: Span, pat: ast::Pat_) -> Gc<ast::Pat>;
fn pat_wild(&self, span: Span) -> Gc<ast::Pat>;
fn pat_lit(&self, span: Span, expr: Gc<ast::Expr>) -> Gc<ast::Pat>;
fn pat_ident(&self, span: Span, ident: ast::Ident) -> Gc<ast::Pat>;
fn pat_ident_binding_mode(&self,
span: Span,
ident: ast::Ident,
bm: ast::BindingMode) -> @ast::Pat;
fn pat_enum(&self, span: Span, path: ast::Path, subpats: Vec<@ast::Pat> ) -> @ast::Pat;
bm: ast::BindingMode) -> Gc<ast::Pat>;
fn pat_enum(&self, span: Span, path: ast::Path,
subpats: Vec<Gc<ast::Pat>>) -> Gc<ast::Pat>;
fn pat_struct(&self, span: Span,
path: ast::Path, field_pats: Vec<ast::FieldPat> ) -> @ast::Pat;
path: ast::Path, field_pats: Vec<ast::FieldPat> ) -> Gc<ast::Pat>;
fn arm(&self, span: Span, pats: Vec<@ast::Pat> , expr: @ast::Expr) -> ast::Arm;
fn arm(&self, span: Span, pats: Vec<Gc<ast::Pat>> , expr: Gc<ast::Expr>) -> ast::Arm;
fn arm_unreachable(&self, span: Span) -> ast::Arm;
fn expr_match(&self, span: Span, arg: @ast::Expr, arms: Vec<ast::Arm> ) -> @ast::Expr;
fn expr_match(&self, span: Span, arg: Gc<ast::Expr>, arms: Vec<ast::Arm> ) -> Gc<ast::Expr>;
fn expr_if(&self, span: Span,
cond: @ast::Expr, then: @ast::Expr, els: Option<@ast::Expr>) -> @ast::Expr;
cond: Gc<ast::Expr>, then: Gc<ast::Expr>,
els: Option<Gc<ast::Expr>>) -> Gc<ast::Expr>;
fn lambda_fn_decl(&self, span: Span,
fn_decl: P<ast::FnDecl>, blk: P<ast::Block>) -> @ast::Expr;
fn_decl: P<ast::FnDecl>, blk: P<ast::Block>) -> Gc<ast::Expr>;
fn lambda(&self, span: Span, ids: Vec<ast::Ident> , blk: P<ast::Block>) -> @ast::Expr;
fn lambda0(&self, span: Span, blk: P<ast::Block>) -> @ast::Expr;
fn lambda1(&self, span: Span, blk: P<ast::Block>, ident: ast::Ident) -> @ast::Expr;
fn lambda(&self, span: Span, ids: Vec<ast::Ident> , blk: P<ast::Block>) -> Gc<ast::Expr>;
fn lambda0(&self, span: Span, blk: P<ast::Block>) -> Gc<ast::Expr>;
fn lambda1(&self, span: Span, blk: P<ast::Block>, ident: ast::Ident) -> Gc<ast::Expr>;
fn lambda_expr(&self, span: Span, ids: Vec<ast::Ident> , blk: @ast::Expr) -> @ast::Expr;
fn lambda_expr_0(&self, span: Span, expr: @ast::Expr) -> @ast::Expr;
fn lambda_expr_1(&self, span: Span, expr: @ast::Expr, ident: ast::Ident) -> @ast::Expr;
fn lambda_expr(&self, span: Span, ids: Vec<ast::Ident> , blk: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn lambda_expr_0(&self, span: Span, expr: Gc<ast::Expr>) -> Gc<ast::Expr>;
fn lambda_expr_1(&self, span: Span, expr: Gc<ast::Expr>, ident: ast::Ident) -> Gc<ast::Expr>;
fn lambda_stmts(&self, span: Span, ids: Vec<ast::Ident> , blk: Vec<@ast::Stmt> ) -> @ast::Expr;
fn lambda_stmts_0(&self, span: Span, stmts: Vec<@ast::Stmt> ) -> @ast::Expr;
fn lambda_stmts_1(&self, span: Span, stmts: Vec<@ast::Stmt> , ident: ast::Ident) -> @ast::Expr;
fn lambda_stmts(&self, span: Span, ids: Vec<ast::Ident>,
blk: Vec<Gc<ast::Stmt>>) -> Gc<ast::Expr>;
fn lambda_stmts_0(&self, span: Span,
stmts: Vec<Gc<ast::Stmt>>) -> Gc<ast::Expr>;
fn lambda_stmts_1(&self, span: Span,
stmts: Vec<Gc<ast::Stmt>>, ident: ast::Ident) -> Gc<ast::Expr>;
// items
fn item(&self, span: Span,
name: Ident, attrs: Vec<ast::Attribute> , node: ast::Item_) -> @ast::Item;
name: Ident, attrs: Vec<ast::Attribute>,
node: ast::Item_) -> Gc<ast::Item>;
fn arg(&self, span: Span, name: Ident, ty: P<ast::Ty>) -> ast::Arg;
// FIXME unused self
@ -193,56 +209,59 @@ pub trait AstBuilder {
inputs: Vec<ast::Arg> ,
output: P<ast::Ty>,
generics: Generics,
body: P<ast::Block>) -> @ast::Item;
body: P<ast::Block>) -> Gc<ast::Item>;
fn item_fn(&self,
span: Span,
name: Ident,
inputs: Vec<ast::Arg> ,
output: P<ast::Ty>,
body: P<ast::Block>) -> @ast::Item;
body: P<ast::Block>) -> Gc<ast::Item>;
fn variant(&self, span: Span, name: Ident, tys: Vec<P<ast::Ty>> ) -> ast::Variant;
fn item_enum_poly(&self,
span: Span,
name: Ident,
enum_definition: ast::EnumDef,
generics: Generics) -> @ast::Item;
fn item_enum(&self, span: Span, name: Ident, enum_def: ast::EnumDef) -> @ast::Item;
generics: Generics) -> Gc<ast::Item>;
fn item_enum(&self, span: Span, name: Ident,
enum_def: ast::EnumDef) -> Gc<ast::Item>;
fn item_struct_poly(&self,
span: Span,
name: Ident,
struct_def: ast::StructDef,
generics: Generics) -> @ast::Item;
fn item_struct(&self, span: Span, name: Ident, struct_def: ast::StructDef) -> @ast::Item;
generics: Generics) -> Gc<ast::Item>;
fn item_struct(&self, span: Span, name: Ident,
struct_def: ast::StructDef) -> Gc<ast::Item>;
fn item_mod(&self, span: Span, inner_span: Span,
name: Ident, attrs: Vec<ast::Attribute> ,
vi: Vec<ast::ViewItem> , items: Vec<@ast::Item> ) -> @ast::Item;
name: Ident, attrs: Vec<ast::Attribute>,
vi: Vec<ast::ViewItem>,
items: Vec<Gc<ast::Item>>) -> Gc<ast::Item>;
fn item_ty_poly(&self,
span: Span,
name: Ident,
ty: P<ast::Ty>,
generics: Generics) -> @ast::Item;
fn item_ty(&self, span: Span, name: Ident, ty: P<ast::Ty>) -> @ast::Item;
generics: Generics) -> Gc<ast::Item>;
fn item_ty(&self, span: Span, name: Ident, ty: P<ast::Ty>) -> Gc<ast::Item>;
fn attribute(&self, sp: Span, mi: @ast::MetaItem) -> ast::Attribute;
fn attribute(&self, sp: Span, mi: Gc<ast::MetaItem>) -> ast::Attribute;
fn meta_word(&self, sp: Span, w: InternedString) -> @ast::MetaItem;
fn meta_word(&self, sp: Span, w: InternedString) -> Gc<ast::MetaItem>;
fn meta_list(&self,
sp: Span,
name: InternedString,
mis: Vec<@ast::MetaItem> )
-> @ast::MetaItem;
mis: Vec<Gc<ast::MetaItem>>)
-> Gc<ast::MetaItem>;
fn meta_name_value(&self,
sp: Span,
name: InternedString,
value: ast::Lit_)
-> @ast::MetaItem;
-> Gc<ast::MetaItem>;
fn view_use(&self, sp: Span,
vis: ast::Visibility, vp: @ast::ViewPath) -> ast::ViewItem;
vis: ast::Visibility, vp: Gc<ast::ViewPath>) -> ast::ViewItem;
fn view_use_simple(&self, sp: Span, vis: ast::Visibility, path: ast::Path) -> ast::ViewItem;
fn view_use_simple_(&self, sp: Span, vis: ast::Visibility,
ident: ast::Ident, path: ast::Path) -> ast::ViewItem;
@ -418,17 +437,18 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
ast::Lifetime { id: ast::DUMMY_NODE_ID, span: span, name: name }
}
fn stmt_expr(&self, expr: @ast::Expr) -> @ast::Stmt {
@respan(expr.span, ast::StmtSemi(expr, ast::DUMMY_NODE_ID))
fn stmt_expr(&self, expr: Gc<ast::Expr>) -> Gc<ast::Stmt> {
box(GC) respan(expr.span, ast::StmtSemi(expr, ast::DUMMY_NODE_ID))
}
fn stmt_let(&self, sp: Span, mutbl: bool, ident: ast::Ident, ex: @ast::Expr) -> @ast::Stmt {
fn stmt_let(&self, sp: Span, mutbl: bool, ident: ast::Ident,
ex: Gc<ast::Expr>) -> Gc<ast::Stmt> {
let pat = if mutbl {
self.pat_ident_binding_mode(sp, ident, ast::BindByValue(ast::MutMutable))
} else {
self.pat_ident(sp, ident)
};
let local = @ast::Local {
let local = box(GC) ast::Local {
ty: self.ty_infer(sp),
pat: pat,
init: Some(ex),
@ -437,7 +457,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
source: ast::LocalLet,
};
let decl = respan(sp, ast::DeclLocal(local));
@respan(sp, ast::StmtDecl(@decl, ast::DUMMY_NODE_ID))
box(GC) respan(sp, ast::StmtDecl(box(GC) decl, ast::DUMMY_NODE_ID))
}
fn stmt_let_typed(&self,
@ -445,14 +465,14 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
mutbl: bool,
ident: ast::Ident,
typ: P<ast::Ty>,
ex: @ast::Expr)
-> @ast::Stmt {
ex: Gc<ast::Expr>)
-> Gc<ast::Stmt> {
let pat = if mutbl {
self.pat_ident_binding_mode(sp, ident, ast::BindByValue(ast::MutMutable))
} else {
self.pat_ident(sp, ident)
};
let local = @ast::Local {
let local = box(GC) ast::Local {
ty: typ,
pat: pat,
init: Some(ex),
@ -461,21 +481,22 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
source: ast::LocalLet,
};
let decl = respan(sp, ast::DeclLocal(local));
@respan(sp, ast::StmtDecl(@decl, ast::DUMMY_NODE_ID))
box(GC) respan(sp, ast::StmtDecl(box(GC) decl, ast::DUMMY_NODE_ID))
}
fn block(&self, span: Span, stmts: Vec<@ast::Stmt> , expr: Option<@Expr>) -> P<ast::Block> {
fn block(&self, span: Span, stmts: Vec<Gc<ast::Stmt>>,
expr: Option<Gc<Expr>>) -> P<ast::Block> {
self.block_all(span, Vec::new(), stmts, expr)
}
fn block_expr(&self, expr: @ast::Expr) -> P<ast::Block> {
fn block_expr(&self, expr: Gc<ast::Expr>) -> P<ast::Block> {
self.block_all(expr.span, Vec::new(), Vec::new(), Some(expr))
}
fn block_all(&self,
span: Span,
view_items: Vec<ast::ViewItem> ,
stmts: Vec<@ast::Stmt> ,
expr: Option<@ast::Expr>) -> P<ast::Block> {
stmts: Vec<Gc<ast::Stmt>>,
expr: Option<Gc<ast::Expr>>) -> P<ast::Block> {
P(ast::Block {
view_items: view_items,
stmts: stmts,
@ -486,107 +507,109 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
})
}
fn expr(&self, span: Span, node: ast::Expr_) -> @ast::Expr {
@ast::Expr {
fn expr(&self, span: Span, node: ast::Expr_) -> Gc<ast::Expr> {
box(GC) ast::Expr {
id: ast::DUMMY_NODE_ID,
node: node,
span: span,
}
}
fn expr_path(&self, path: ast::Path) -> @ast::Expr {
fn expr_path(&self, path: ast::Path) -> Gc<ast::Expr> {
self.expr(path.span, ast::ExprPath(path))
}
fn expr_ident(&self, span: Span, id: ast::Ident) -> @ast::Expr {
fn expr_ident(&self, span: Span, id: ast::Ident) -> Gc<ast::Expr> {
self.expr_path(self.path_ident(span, id))
}
fn expr_self(&self, span: Span) -> @ast::Expr {
fn expr_self(&self, span: Span) -> Gc<ast::Expr> {
self.expr_ident(span, special_idents::self_)
}
fn expr_binary(&self, sp: Span, op: ast::BinOp,
lhs: @ast::Expr, rhs: @ast::Expr) -> @ast::Expr {
lhs: Gc<ast::Expr>, rhs: Gc<ast::Expr>) -> Gc<ast::Expr> {
self.expr(sp, ast::ExprBinary(op, lhs, rhs))
}
fn expr_deref(&self, sp: Span, e: @ast::Expr) -> @ast::Expr {
fn expr_deref(&self, sp: Span, e: Gc<ast::Expr>) -> Gc<ast::Expr> {
self.expr_unary(sp, ast::UnDeref, e)
}
fn expr_unary(&self, sp: Span, op: ast::UnOp, e: @ast::Expr) -> @ast::Expr {
fn expr_unary(&self, sp: Span, op: ast::UnOp, e: Gc<ast::Expr>) -> Gc<ast::Expr> {
self.expr(sp, ast::ExprUnary(op, e))
}
fn expr_managed(&self, sp: Span, e: @ast::Expr) -> @ast::Expr {
fn expr_managed(&self, sp: Span, e: Gc<ast::Expr>) -> Gc<ast::Expr> {
self.expr_unary(sp, ast::UnBox, e)
}
fn expr_field_access(&self, sp: Span, expr: @ast::Expr, ident: ast::Ident) -> @ast::Expr {
fn expr_field_access(&self, sp: Span, expr: Gc<ast::Expr>, ident: ast::Ident) -> Gc<ast::Expr> {
self.expr(sp, ast::ExprField(expr, ident, Vec::new()))
}
fn expr_addr_of(&self, sp: Span, e: @ast::Expr) -> @ast::Expr {
fn expr_addr_of(&self, sp: Span, e: Gc<ast::Expr>) -> Gc<ast::Expr> {
self.expr(sp, ast::ExprAddrOf(ast::MutImmutable, e))
}
fn expr_mut_addr_of(&self, sp: Span, e: @ast::Expr) -> @ast::Expr {
fn expr_mut_addr_of(&self, sp: Span, e: Gc<ast::Expr>) -> Gc<ast::Expr> {
self.expr(sp, ast::ExprAddrOf(ast::MutMutable, e))
}
fn expr_call(&self, span: Span, expr: @ast::Expr, args: Vec<@ast::Expr> ) -> @ast::Expr {
fn expr_call(&self, span: Span, expr: Gc<ast::Expr>,
args: Vec<Gc<ast::Expr>>) -> Gc<ast::Expr> {
self.expr(span, ast::ExprCall(expr, args))
}
fn expr_call_ident(&self, span: Span, id: ast::Ident, args: Vec<@ast::Expr> ) -> @ast::Expr {
fn expr_call_ident(&self, span: Span, id: ast::Ident,
args: Vec<Gc<ast::Expr>>) -> Gc<ast::Expr> {
self.expr(span, ast::ExprCall(self.expr_ident(span, id), args))
}
fn expr_call_global(&self, sp: Span, fn_path: Vec<ast::Ident> ,
args: Vec<@ast::Expr> ) -> @ast::Expr {
args: Vec<Gc<ast::Expr>> ) -> Gc<ast::Expr> {
let pathexpr = self.expr_path(self.path_global(sp, fn_path));
self.expr_call(sp, pathexpr, args)
}
fn expr_method_call(&self, span: Span,
expr: @ast::Expr,
expr: Gc<ast::Expr>,
ident: ast::Ident,
mut args: Vec<@ast::Expr> ) -> @ast::Expr {
mut args: Vec<Gc<ast::Expr>> ) -> Gc<ast::Expr> {
let id = Spanned { node: ident, span: span };
args.unshift(expr);
self.expr(span, ast::ExprMethodCall(id, Vec::new(), args))
}
fn expr_block(&self, b: P<ast::Block>) -> @ast::Expr {
fn expr_block(&self, b: P<ast::Block>) -> Gc<ast::Expr> {
self.expr(b.span, ast::ExprBlock(b))
}
fn field_imm(&self, span: Span, name: Ident, e: @ast::Expr) -> ast::Field {
fn field_imm(&self, span: Span, name: Ident, e: Gc<ast::Expr>) -> ast::Field {
ast::Field { ident: respan(span, name), expr: e, span: span }
}
fn expr_struct(&self, span: Span, path: ast::Path, fields: Vec<ast::Field> ) -> @ast::Expr {
fn expr_struct(&self, span: Span, path: ast::Path, fields: Vec<ast::Field> ) -> Gc<ast::Expr> {
self.expr(span, ast::ExprStruct(path, fields, None))
}
fn expr_struct_ident(&self, span: Span,
id: ast::Ident, fields: Vec<ast::Field> ) -> @ast::Expr {
id: ast::Ident, fields: Vec<ast::Field> ) -> Gc<ast::Expr> {
self.expr_struct(span, self.path_ident(span, id), fields)
}
fn expr_lit(&self, sp: Span, lit: ast::Lit_) -> @ast::Expr {
self.expr(sp, ast::ExprLit(@respan(sp, lit)))
fn expr_lit(&self, sp: Span, lit: ast::Lit_) -> Gc<ast::Expr> {
self.expr(sp, ast::ExprLit(box(GC) respan(sp, lit)))
}
fn expr_uint(&self, span: Span, i: uint) -> @ast::Expr {
fn expr_uint(&self, span: Span, i: uint) -> Gc<ast::Expr> {
self.expr_lit(span, ast::LitUint(i as u64, ast::TyU))
}
fn expr_int(&self, sp: Span, i: int) -> @ast::Expr {
fn expr_int(&self, sp: Span, i: int) -> Gc<ast::Expr> {
self.expr_lit(sp, ast::LitInt(i as i64, ast::TyI))
}
fn expr_u8(&self, sp: Span, u: u8) -> @ast::Expr {
fn expr_u8(&self, sp: Span, u: u8) -> Gc<ast::Expr> {
self.expr_lit(sp, ast::LitUint(u as u64, ast::TyU8))
}
fn expr_bool(&self, sp: Span, value: bool) -> @ast::Expr {
fn expr_bool(&self, sp: Span, value: bool) -> Gc<ast::Expr> {
self.expr_lit(sp, ast::LitBool(value))
}
fn expr_vstore(&self, sp: Span, expr: @ast::Expr, vst: ast::ExprVstore) -> @ast::Expr {
fn expr_vstore(&self, sp: Span, expr: Gc<ast::Expr>, vst: ast::ExprVstore) -> Gc<ast::Expr> {
self.expr(sp, ast::ExprVstore(expr, vst))
}
fn expr_vec(&self, sp: Span, exprs: Vec<@ast::Expr> ) -> @ast::Expr {
fn expr_vec(&self, sp: Span, exprs: Vec<Gc<ast::Expr>> ) -> Gc<ast::Expr> {
self.expr(sp, ast::ExprVec(exprs))
}
fn expr_vec_ng(&self, sp: Span) -> @ast::Expr {
fn expr_vec_ng(&self, sp: Span) -> Gc<ast::Expr> {
self.expr_call_global(sp,
vec!(self.ident_of("std"),
self.ident_of("vec"),
@ -594,23 +617,23 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
self.ident_of("new")),
Vec::new())
}
fn expr_vec_slice(&self, sp: Span, exprs: Vec<@ast::Expr> ) -> @ast::Expr {
fn expr_vec_slice(&self, sp: Span, exprs: Vec<Gc<ast::Expr>> ) -> Gc<ast::Expr> {
self.expr_vstore(sp, self.expr_vec(sp, exprs), ast::ExprVstoreSlice)
}
fn expr_str(&self, sp: Span, s: InternedString) -> @ast::Expr {
fn expr_str(&self, sp: Span, s: InternedString) -> Gc<ast::Expr> {
self.expr_lit(sp, ast::LitStr(s, ast::CookedStr))
}
fn expr_str_uniq(&self, sp: Span, s: InternedString) -> @ast::Expr {
fn expr_str_uniq(&self, sp: Span, s: InternedString) -> Gc<ast::Expr> {
self.expr_vstore(sp, self.expr_str(sp, s), ast::ExprVstoreUniq)
}
fn expr_cast(&self, sp: Span, expr: @ast::Expr, ty: P<ast::Ty>) -> @ast::Expr {
fn expr_cast(&self, sp: Span, expr: Gc<ast::Expr>, ty: P<ast::Ty>) -> Gc<ast::Expr> {
self.expr(sp, ast::ExprCast(expr, ty))
}
fn expr_some(&self, sp: Span, expr: @ast::Expr) -> @ast::Expr {
fn expr_some(&self, sp: Span, expr: Gc<ast::Expr>) -> Gc<ast::Expr> {
let some = vec!(
self.ident_of("std"),
self.ident_of("option"),
@ -618,7 +641,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
self.expr_call_global(sp, some, vec!(expr))
}
fn expr_none(&self, sp: Span) -> @ast::Expr {
fn expr_none(&self, sp: Span) -> Gc<ast::Expr> {
let none = self.path_global(sp, vec!(
self.ident_of("std"),
self.ident_of("option"),
@ -626,7 +649,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
self.expr_path(none)
}
fn expr_fail(&self, span: Span, msg: InternedString) -> @ast::Expr {
fn expr_fail(&self, span: Span, msg: InternedString) -> Gc<ast::Expr> {
let loc = self.codemap().lookup_char_pos(span.lo);
self.expr_call_global(
span,
@ -643,13 +666,13 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
self.expr_uint(span, loc.line)))
}
fn expr_unreachable(&self, span: Span) -> @ast::Expr {
fn expr_unreachable(&self, span: Span) -> Gc<ast::Expr> {
self.expr_fail(span,
InternedString::new(
"internal error: entered unreachable code"))
}
fn expr_ok(&self, sp: Span, expr: @ast::Expr) -> @ast::Expr {
fn expr_ok(&self, sp: Span, expr: Gc<ast::Expr>) -> Gc<ast::Expr> {
let ok = vec!(
self.ident_of("std"),
self.ident_of("result"),
@ -657,7 +680,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
self.expr_call_global(sp, ok, vec!(expr))
}
fn expr_err(&self, sp: Span, expr: @ast::Expr) -> @ast::Expr {
fn expr_err(&self, sp: Span, expr: Gc<ast::Expr>) -> Gc<ast::Expr> {
let err = vec!(
self.ident_of("std"),
self.ident_of("result"),
@ -665,7 +688,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
self.expr_call_global(sp, err, vec!(expr))
}
fn expr_try(&self, sp: Span, head: @ast::Expr) -> @ast::Expr {
fn expr_try(&self, sp: Span, head: Gc<ast::Expr>) -> Gc<ast::Expr> {
let ok = self.ident_of("Ok");
let ok_path = self.path_ident(sp, ok);
let err = self.ident_of("Err");
@ -694,38 +717,38 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
}
fn pat(&self, span: Span, pat: ast::Pat_) -> @ast::Pat {
@ast::Pat { id: ast::DUMMY_NODE_ID, node: pat, span: span }
fn pat(&self, span: Span, pat: ast::Pat_) -> Gc<ast::Pat> {
box(GC) ast::Pat { id: ast::DUMMY_NODE_ID, node: pat, span: span }
}
fn pat_wild(&self, span: Span) -> @ast::Pat {
fn pat_wild(&self, span: Span) -> Gc<ast::Pat> {
self.pat(span, ast::PatWild)
}
fn pat_lit(&self, span: Span, expr: @ast::Expr) -> @ast::Pat {
fn pat_lit(&self, span: Span, expr: Gc<ast::Expr>) -> Gc<ast::Pat> {
self.pat(span, ast::PatLit(expr))
}
fn pat_ident(&self, span: Span, ident: ast::Ident) -> @ast::Pat {
fn pat_ident(&self, span: Span, ident: ast::Ident) -> Gc<ast::Pat> {
self.pat_ident_binding_mode(span, ident, ast::BindByValue(ast::MutImmutable))
}
fn pat_ident_binding_mode(&self,
span: Span,
ident: ast::Ident,
bm: ast::BindingMode) -> @ast::Pat {
bm: ast::BindingMode) -> Gc<ast::Pat> {
let path = self.path_ident(span, ident);
let pat = ast::PatIdent(bm, path, None);
self.pat(span, pat)
}
fn pat_enum(&self, span: Span, path: ast::Path, subpats: Vec<@ast::Pat> ) -> @ast::Pat {
fn pat_enum(&self, span: Span, path: ast::Path, subpats: Vec<Gc<ast::Pat>> ) -> Gc<ast::Pat> {
let pat = ast::PatEnum(path, Some(subpats));
self.pat(span, pat)
}
fn pat_struct(&self, span: Span,
path: ast::Path, field_pats: Vec<ast::FieldPat> ) -> @ast::Pat {
path: ast::Path, field_pats: Vec<ast::FieldPat> ) -> Gc<ast::Pat> {
let pat = ast::PatStruct(path, field_pats, false);
self.pat(span, pat)
}
fn arm(&self, _span: Span, pats: Vec<@ast::Pat> , expr: @ast::Expr) -> ast::Arm {
fn arm(&self, _span: Span, pats: Vec<Gc<ast::Pat>> , expr: Gc<ast::Expr>) -> ast::Arm {
ast::Arm {
attrs: vec!(),
pats: pats,
@ -738,56 +761,60 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
self.arm(span, vec!(self.pat_wild(span)), self.expr_unreachable(span))
}
fn expr_match(&self, span: Span, arg: @ast::Expr, arms: Vec<ast::Arm> ) -> @Expr {
fn expr_match(&self, span: Span, arg: Gc<ast::Expr>,
arms: Vec<ast::Arm>) -> Gc<Expr> {
self.expr(span, ast::ExprMatch(arg, arms))
}
fn expr_if(&self, span: Span,
cond: @ast::Expr, then: @ast::Expr, els: Option<@ast::Expr>) -> @ast::Expr {
cond: Gc<ast::Expr>, then: Gc<ast::Expr>,
els: Option<Gc<ast::Expr>>) -> Gc<ast::Expr> {
let els = els.map(|x| self.expr_block(self.block_expr(x)));
self.expr(span, ast::ExprIf(cond, self.block_expr(then), els))
}
fn lambda_fn_decl(&self, span: Span,
fn_decl: P<ast::FnDecl>, blk: P<ast::Block>) -> @ast::Expr {
fn_decl: P<ast::FnDecl>, blk: P<ast::Block>) -> Gc<ast::Expr> {
self.expr(span, ast::ExprFnBlock(fn_decl, blk))
}
fn lambda(&self, span: Span, ids: Vec<ast::Ident> , blk: P<ast::Block>) -> @ast::Expr {
fn lambda(&self, span: Span, ids: Vec<ast::Ident> , blk: P<ast::Block>) -> Gc<ast::Expr> {
let fn_decl = self.fn_decl(
ids.iter().map(|id| self.arg(span, *id, self.ty_infer(span))).collect(),
self.ty_infer(span));
self.expr(span, ast::ExprFnBlock(fn_decl, blk))
}
fn lambda0(&self, span: Span, blk: P<ast::Block>) -> @ast::Expr {
fn lambda0(&self, span: Span, blk: P<ast::Block>) -> Gc<ast::Expr> {
self.lambda(span, Vec::new(), blk)
}
fn lambda1(&self, span: Span, blk: P<ast::Block>, ident: ast::Ident) -> @ast::Expr {
fn lambda1(&self, span: Span, blk: P<ast::Block>, ident: ast::Ident) -> Gc<ast::Expr> {
self.lambda(span, vec!(ident), blk)
}
fn lambda_expr(&self, span: Span, ids: Vec<ast::Ident> , expr: @ast::Expr) -> @ast::Expr {
fn lambda_expr(&self, span: Span, ids: Vec<ast::Ident> , expr: Gc<ast::Expr>) -> Gc<ast::Expr> {
self.lambda(span, ids, self.block_expr(expr))
}
fn lambda_expr_0(&self, span: Span, expr: @ast::Expr) -> @ast::Expr {
fn lambda_expr_0(&self, span: Span, expr: Gc<ast::Expr>) -> Gc<ast::Expr> {
self.lambda0(span, self.block_expr(expr))
}
fn lambda_expr_1(&self, span: Span, expr: @ast::Expr, ident: ast::Ident) -> @ast::Expr {
fn lambda_expr_1(&self, span: Span, expr: Gc<ast::Expr>, ident: ast::Ident) -> Gc<ast::Expr> {
self.lambda1(span, self.block_expr(expr), ident)
}
fn lambda_stmts(&self,
span: Span,
ids: Vec<ast::Ident>,
stmts: Vec<@ast::Stmt>)
-> @ast::Expr {
stmts: Vec<Gc<ast::Stmt>>)
-> Gc<ast::Expr> {
self.lambda(span, ids, self.block(span, stmts, None))
}
fn lambda_stmts_0(&self, span: Span, stmts: Vec<@ast::Stmt> ) -> @ast::Expr {
fn lambda_stmts_0(&self, span: Span,
stmts: Vec<Gc<ast::Stmt>>) -> Gc<ast::Expr> {
self.lambda0(span, self.block(span, stmts, None))
}
fn lambda_stmts_1(&self, span: Span, stmts: Vec<@ast::Stmt> , ident: ast::Ident) -> @ast::Expr {
fn lambda_stmts_1(&self, span: Span, stmts: Vec<Gc<ast::Stmt>>,
ident: ast::Ident) -> Gc<ast::Expr> {
self.lambda1(span, self.block(span, stmts, None), ident)
}
@ -811,10 +838,11 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
}
fn item(&self, span: Span,
name: Ident, attrs: Vec<ast::Attribute> , node: ast::Item_) -> @ast::Item {
name: Ident, attrs: Vec<ast::Attribute>,
node: ast::Item_) -> Gc<ast::Item> {
// FIXME: Would be nice if our generated code didn't violate
// Rust coding conventions
@ast::Item { ident: name,
box(GC) ast::Item { ident: name,
attrs: attrs,
id: ast::DUMMY_NODE_ID,
node: node,
@ -828,7 +856,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
inputs: Vec<ast::Arg> ,
output: P<ast::Ty>,
generics: Generics,
body: P<ast::Block>) -> @ast::Item {
body: P<ast::Block>) -> Gc<ast::Item> {
self.item(span,
name,
Vec::new(),
@ -845,7 +873,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
inputs: Vec<ast::Arg> ,
output: P<ast::Ty>,
body: P<ast::Block>
) -> @ast::Item {
) -> Gc<ast::Item> {
self.item_fn_poly(
span,
name,
@ -873,18 +901,18 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
fn item_enum_poly(&self, span: Span, name: Ident,
enum_definition: ast::EnumDef,
generics: Generics) -> @ast::Item {
generics: Generics) -> Gc<ast::Item> {
self.item(span, name, Vec::new(), ast::ItemEnum(enum_definition, generics))
}
fn item_enum(&self, span: Span, name: Ident,
enum_definition: ast::EnumDef) -> @ast::Item {
enum_definition: ast::EnumDef) -> Gc<ast::Item> {
self.item_enum_poly(span, name, enum_definition,
ast_util::empty_generics())
}
fn item_struct(&self, span: Span, name: Ident,
struct_def: ast::StructDef) -> @ast::Item {
struct_def: ast::StructDef) -> Gc<ast::Item> {
self.item_struct_poly(
span,
name,
@ -894,14 +922,14 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
}
fn item_struct_poly(&self, span: Span, name: Ident,
struct_def: ast::StructDef, generics: Generics) -> @ast::Item {
self.item(span, name, Vec::new(), ast::ItemStruct(@struct_def, generics))
struct_def: ast::StructDef, generics: Generics) -> Gc<ast::Item> {
self.item(span, name, Vec::new(), ast::ItemStruct(box(GC) struct_def, generics))
}
fn item_mod(&self, span: Span, inner_span: Span, name: Ident,
attrs: Vec<ast::Attribute> ,
vi: Vec<ast::ViewItem> ,
items: Vec<@ast::Item> ) -> @ast::Item {
items: Vec<Gc<ast::Item>>) -> Gc<ast::Item> {
self.item(
span,
name,
@ -915,15 +943,15 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
}
fn item_ty_poly(&self, span: Span, name: Ident, ty: P<ast::Ty>,
generics: Generics) -> @ast::Item {
generics: Generics) -> Gc<ast::Item> {
self.item(span, name, Vec::new(), ast::ItemTy(ty, generics))
}
fn item_ty(&self, span: Span, name: Ident, ty: P<ast::Ty>) -> @ast::Item {
fn item_ty(&self, span: Span, name: Ident, ty: P<ast::Ty>) -> Gc<ast::Item> {
self.item_ty_poly(span, name, ty, ast_util::empty_generics())
}
fn attribute(&self, sp: Span, mi: @ast::MetaItem) -> ast::Attribute {
fn attribute(&self, sp: Span, mi: Gc<ast::MetaItem>) -> ast::Attribute {
respan(sp, ast::Attribute_ {
id: attr::mk_attr_id(),
style: ast::AttrOuter,
@ -932,26 +960,26 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
})
}
fn meta_word(&self, sp: Span, w: InternedString) -> @ast::MetaItem {
@respan(sp, ast::MetaWord(w))
fn meta_word(&self, sp: Span, w: InternedString) -> Gc<ast::MetaItem> {
box(GC) respan(sp, ast::MetaWord(w))
}
fn meta_list(&self,
sp: Span,
name: InternedString,
mis: Vec<@ast::MetaItem> )
-> @ast::MetaItem {
@respan(sp, ast::MetaList(name, mis))
mis: Vec<Gc<ast::MetaItem>> )
-> Gc<ast::MetaItem> {
box(GC) respan(sp, ast::MetaList(name, mis))
}
fn meta_name_value(&self,
sp: Span,
name: InternedString,
value: ast::Lit_)
-> @ast::MetaItem {
@respan(sp, ast::MetaNameValue(name, respan(sp, value)))
-> Gc<ast::MetaItem> {
box(GC) respan(sp, ast::MetaNameValue(name, respan(sp, value)))
}
fn view_use(&self, sp: Span,
vis: ast::Visibility, vp: @ast::ViewPath) -> ast::ViewItem {
vis: ast::Visibility, vp: Gc<ast::ViewPath>) -> ast::ViewItem {
ast::ViewItem {
node: ast::ViewItemUse(vp),
attrs: Vec::new(),
@ -968,7 +996,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
fn view_use_simple_(&self, sp: Span, vis: ast::Visibility,
ident: ast::Ident, path: ast::Path) -> ast::ViewItem {
self.view_use(sp, vis,
@respan(sp,
box(GC) respan(sp,
ast::ViewPathSimple(ident,
path,
ast::DUMMY_NODE_ID)))
@ -981,7 +1009,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
}).collect();
self.view_use(sp, vis,
@respan(sp,
box(GC) respan(sp,
ast::ViewPathList(self.path(sp, path),
imports,
ast::DUMMY_NODE_ID)))
@ -990,7 +1018,7 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
fn view_use_glob(&self, sp: Span,
vis: ast::Visibility, path: Vec<ast::Ident> ) -> ast::ViewItem {
self.view_use(sp, vis,
@respan(sp,
box(GC) respan(sp,
ast::ViewPathGlob(self.path(sp, path), ast::DUMMY_NODE_ID)))
}
}
@ -1013,8 +1041,8 @@ pub trait Duplicate {
fn duplicate(&self, cx: &ExtCtxt) -> Self;
}
impl Duplicate for @ast::Expr {
fn duplicate(&self, _: &ExtCtxt) -> @ast::Expr {
impl Duplicate for Gc<ast::Expr> {
fn duplicate(&self, _: &ExtCtxt) -> Gc<ast::Expr> {
let mut folder = Duplicator;
folder.fold_expr(*self)
}