microsoft/qdk
Publicmirrored from https://github.com/microsoft/qdkAvailable
compiler/qsc_hir/src/visit.rs
203lines · modecode
| 1 | // Copyright (c) Microsoft Corporation. |
| 2 | // Licensed under the MIT License. |
| 3 | |
| 4 | use crate::hir::{ |
| 5 | Block, CallableDecl, Expr, ExprKind, Ident, Item, ItemKind, Package, Pat, PatKind, QubitInit, |
| 6 | QubitInitKind, SpecBody, SpecDecl, Stmt, StmtKind, StringComponent, |
| 7 | }; |
| 8 | |
| 9 | pub trait Visitor<'a>: Sized { |
| 10 | fn visit_package(&mut self, package: &'a Package) { |
| 11 | walk_package(self, package); |
| 12 | } |
| 13 | |
| 14 | fn visit_item(&mut self, item: &'a Item) { |
| 15 | walk_item(self, item); |
| 16 | } |
| 17 | |
| 18 | fn visit_callable_decl(&mut self, decl: &'a CallableDecl) { |
| 19 | walk_callable_decl(self, decl); |
| 20 | } |
| 21 | |
| 22 | fn visit_spec_decl(&mut self, decl: &'a SpecDecl) { |
| 23 | walk_spec_decl(self, decl); |
| 24 | } |
| 25 | |
| 26 | fn visit_block(&mut self, block: &'a Block) { |
| 27 | walk_block(self, block); |
| 28 | } |
| 29 | |
| 30 | fn visit_stmt(&mut self, stmt: &'a Stmt) { |
| 31 | walk_stmt(self, stmt); |
| 32 | } |
| 33 | |
| 34 | fn visit_expr(&mut self, expr: &'a Expr) { |
| 35 | walk_expr(self, expr); |
| 36 | } |
| 37 | |
| 38 | fn visit_pat(&mut self, pat: &'a Pat) { |
| 39 | walk_pat(self, pat); |
| 40 | } |
| 41 | |
| 42 | fn visit_qubit_init(&mut self, init: &'a QubitInit) { |
| 43 | walk_qubit_init(self, init); |
| 44 | } |
| 45 | |
| 46 | fn visit_ident(&mut self, _: &'a Ident) {} |
| 47 | } |
| 48 | |
| 49 | pub fn walk_package<'a>(vis: &mut impl Visitor<'a>, package: &'a Package) { |
| 50 | package.items.values().for_each(|i| vis.visit_item(i)); |
| 51 | package.stmts.iter().for_each(|s| vis.visit_stmt(s)); |
| 52 | package.entry.iter().for_each(|e| vis.visit_expr(e)); |
| 53 | } |
| 54 | |
| 55 | pub fn walk_item<'a>(vis: &mut impl Visitor<'a>, item: &'a Item) { |
| 56 | match &item.kind { |
| 57 | ItemKind::Callable(decl) => vis.visit_callable_decl(decl), |
| 58 | ItemKind::Namespace(name, _) | ItemKind::Ty(name, _) => vis.visit_ident(name), |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | pub fn walk_callable_decl<'a>(vis: &mut impl Visitor<'a>, decl: &'a CallableDecl) { |
| 63 | vis.visit_ident(&decl.name); |
| 64 | vis.visit_pat(&decl.input); |
| 65 | vis.visit_spec_decl(&decl.body); |
| 66 | decl.adj.iter().for_each(|spec| vis.visit_spec_decl(spec)); |
| 67 | decl.ctl.iter().for_each(|spec| vis.visit_spec_decl(spec)); |
| 68 | decl.ctl_adj |
| 69 | .iter() |
| 70 | .for_each(|spec| vis.visit_spec_decl(spec)); |
| 71 | } |
| 72 | |
| 73 | pub fn walk_spec_decl<'a>(vis: &mut impl Visitor<'a>, decl: &'a SpecDecl) { |
| 74 | match &decl.body { |
| 75 | SpecBody::Gen(_) => {} |
| 76 | SpecBody::Impl(pat, block) => { |
| 77 | pat.iter().for_each(|pat| vis.visit_pat(pat)); |
| 78 | vis.visit_block(block); |
| 79 | } |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | pub fn walk_block<'a>(vis: &mut impl Visitor<'a>, block: &'a Block) { |
| 84 | block.stmts.iter().for_each(|s| vis.visit_stmt(s)); |
| 85 | } |
| 86 | |
| 87 | pub fn walk_stmt<'a>(vis: &mut impl Visitor<'a>, stmt: &'a Stmt) { |
| 88 | match &stmt.kind { |
| 89 | StmtKind::Item(_) => {} |
| 90 | StmtKind::Expr(expr) | StmtKind::Semi(expr) => vis.visit_expr(expr), |
| 91 | StmtKind::Local(_, pat, value) => { |
| 92 | vis.visit_pat(pat); |
| 93 | vis.visit_expr(value); |
| 94 | } |
| 95 | StmtKind::Qubit(_, pat, init, block) => { |
| 96 | vis.visit_pat(pat); |
| 97 | vis.visit_qubit_init(init); |
| 98 | block.iter().for_each(|b| vis.visit_block(b)); |
| 99 | } |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | pub fn walk_expr<'a>(vis: &mut impl Visitor<'a>, expr: &'a Expr) { |
| 104 | match &expr.kind { |
| 105 | ExprKind::Array(exprs) => exprs.iter().for_each(|e| vis.visit_expr(e)), |
| 106 | ExprKind::ArrayRepeat(item, size) => { |
| 107 | vis.visit_expr(item); |
| 108 | vis.visit_expr(size); |
| 109 | } |
| 110 | ExprKind::Assign(lhs, rhs) |
| 111 | | ExprKind::AssignOp(_, lhs, rhs) |
| 112 | | ExprKind::BinOp(_, lhs, rhs) => { |
| 113 | vis.visit_expr(lhs); |
| 114 | vis.visit_expr(rhs); |
| 115 | } |
| 116 | ExprKind::AssignField(record, _, replace) | ExprKind::UpdateField(record, _, replace) => { |
| 117 | vis.visit_expr(record); |
| 118 | vis.visit_expr(replace); |
| 119 | } |
| 120 | ExprKind::AssignIndex(array, index, replace) => { |
| 121 | vis.visit_expr(array); |
| 122 | vis.visit_expr(index); |
| 123 | vis.visit_expr(replace); |
| 124 | } |
| 125 | ExprKind::Block(block) => vis.visit_block(block), |
| 126 | ExprKind::Call(callee, arg) => { |
| 127 | vis.visit_expr(callee); |
| 128 | vis.visit_expr(arg); |
| 129 | } |
| 130 | ExprKind::Conjugate(within, apply) => { |
| 131 | vis.visit_block(within); |
| 132 | vis.visit_block(apply); |
| 133 | } |
| 134 | ExprKind::Fail(msg) => vis.visit_expr(msg), |
| 135 | ExprKind::Field(record, _) => vis.visit_expr(record), |
| 136 | ExprKind::For(pat, iter, block) => { |
| 137 | vis.visit_pat(pat); |
| 138 | vis.visit_expr(iter); |
| 139 | vis.visit_block(block); |
| 140 | } |
| 141 | ExprKind::If(cond, body, otherwise) => { |
| 142 | vis.visit_expr(cond); |
| 143 | vis.visit_expr(body); |
| 144 | otherwise.iter().for_each(|e| vis.visit_expr(e)); |
| 145 | } |
| 146 | ExprKind::Index(array, index) => { |
| 147 | vis.visit_expr(array); |
| 148 | vis.visit_expr(index); |
| 149 | } |
| 150 | ExprKind::Return(expr) | ExprKind::UnOp(_, expr) => { |
| 151 | vis.visit_expr(expr); |
| 152 | } |
| 153 | ExprKind::Range(start, step, end) => { |
| 154 | start.iter().for_each(|s| vis.visit_expr(s)); |
| 155 | step.iter().for_each(|s| vis.visit_expr(s)); |
| 156 | end.iter().for_each(|e| vis.visit_expr(e)); |
| 157 | } |
| 158 | ExprKind::Repeat(body, until, fixup) => { |
| 159 | vis.visit_block(body); |
| 160 | vis.visit_expr(until); |
| 161 | fixup.iter().for_each(|f| vis.visit_block(f)); |
| 162 | } |
| 163 | ExprKind::String(components) => { |
| 164 | for component in components { |
| 165 | match component { |
| 166 | StringComponent::Expr(expr) => vis.visit_expr(expr), |
| 167 | StringComponent::Lit(_) => {} |
| 168 | } |
| 169 | } |
| 170 | } |
| 171 | ExprKind::UpdateIndex(e1, e2, e3) => { |
| 172 | vis.visit_expr(e1); |
| 173 | vis.visit_expr(e2); |
| 174 | vis.visit_expr(e3); |
| 175 | } |
| 176 | ExprKind::Tuple(exprs) => exprs.iter().for_each(|e| vis.visit_expr(e)), |
| 177 | ExprKind::While(cond, block) => { |
| 178 | vis.visit_expr(cond); |
| 179 | vis.visit_block(block); |
| 180 | } |
| 181 | ExprKind::Closure(_, _) |
| 182 | | ExprKind::Err |
| 183 | | ExprKind::Hole |
| 184 | | ExprKind::Lit(_) |
| 185 | | ExprKind::Var(_, _) => {} |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | pub fn walk_pat<'a>(vis: &mut impl Visitor<'a>, pat: &'a Pat) { |
| 190 | match &pat.kind { |
| 191 | PatKind::Bind(name) => vis.visit_ident(name), |
| 192 | PatKind::Discard | PatKind::Err => {} |
| 193 | PatKind::Tuple(pats) => pats.iter().for_each(|p| vis.visit_pat(p)), |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | pub fn walk_qubit_init<'a>(vis: &mut impl Visitor<'a>, init: &'a QubitInit) { |
| 198 | match &init.kind { |
| 199 | QubitInitKind::Array(len) => vis.visit_expr(len), |
| 200 | QubitInitKind::Single | QubitInitKind::Err => {} |
| 201 | QubitInitKind::Tuple(inits) => inits.iter().for_each(|i| vis.visit_qubit_init(i)), |
| 202 | } |
| 203 | } |
| 204 | |