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| 1 | +/// Simple Name Mangler |
| 2 | +/// |
| 3 | +/// This simple mangler uses module name as prefix and dollar'ed with function |
| 4 | +/// names. |
| 5 | +use crate::ast::{Expr, FunctionAST, Ident, ModuleAST, Qast, QccCell}; |
| 6 | +use crate::error::Result; |
| 7 | + |
| 8 | +pub(crate) fn mangle(ast: &mut Qast) -> Result<()> { |
| 9 | + for mut module in ast { |
| 10 | + let mod_name = module.get_name(); |
| 11 | + for mut function in &mut *module { |
| 12 | + let fn_name = function.get_name().clone(); |
| 13 | + function.set_name(format!("{}${}", mod_name.clone(), fn_name).into()); |
| 14 | + |
| 15 | + for instruction in &mut *function { |
| 16 | + mangle_expr(instruction, mod_name.clone() + "$"); |
| 17 | + } |
| 18 | + } |
| 19 | + } |
| 20 | + |
| 21 | + Ok(()) |
| 22 | +} |
| 23 | + |
| 24 | +pub(crate) fn mangle_expr(expr: &mut QccCell<Expr>, prefix: Ident) { |
| 25 | + // TODO: prefix: &str |
| 26 | + match *expr.as_ref().borrow_mut() { |
| 27 | + Expr::BinaryExpr(ref mut lhs, _, ref mut rhs) => { |
| 28 | + mangle_expr(lhs, prefix.clone()); |
| 29 | + mangle_expr(rhs, prefix); |
| 30 | + } |
| 31 | + Expr::Let(_, ref mut val) => { |
| 32 | + mangle_expr(val, prefix); |
| 33 | + } |
| 34 | + Expr::FnCall(ref mut f, ref mut args) => { |
| 35 | + for arg in args { |
| 36 | + mangle_expr(arg, prefix.clone()); |
| 37 | + } |
| 38 | + |
| 39 | + f.set_name(prefix + f.get_name()); |
| 40 | + } |
| 41 | + Expr::Tensor(ref mut exprs) => { |
| 42 | + for expr in exprs { |
| 43 | + mangle_expr(expr, prefix.clone()); |
| 44 | + } |
| 45 | + } |
| 46 | + Expr::Conditional(ref mut c, ref mut t, ref mut f) => { |
| 47 | + mangle_expr(c, prefix.clone()); |
| 48 | + for expr in t { |
| 49 | + mangle_expr(expr, prefix.clone()); |
| 50 | + } |
| 51 | + for expr in f { |
| 52 | + mangle_expr(expr, prefix.clone()); |
| 53 | + } |
| 54 | + } |
| 55 | + Expr::Var(_) => {} |
| 56 | + Expr::Literal(_) => {} |
| 57 | + } |
| 58 | +} |
| 59 | + |
| 60 | +pub(crate) fn mangle_fns(expr: &mut QccCell<Expr>, module_name: &String, functions: &Vec<String>) { |
| 61 | + match *expr.as_ref().borrow_mut() { |
| 62 | + Expr::BinaryExpr(ref mut lhs, _, ref mut rhs) => { |
| 63 | + mangle_fns(lhs, module_name, functions); |
| 64 | + mangle_fns(rhs, module_name, functions); |
| 65 | + } |
| 66 | + Expr::Let(ref mut var, ref mut val) => { |
| 67 | + mangle_fns(val, module_name, functions); |
| 68 | + } |
| 69 | + Expr::FnCall(ref mut f, ref mut args) => { |
| 70 | + for arg in args { |
| 71 | + mangle_fns(arg, module_name, functions); |
| 72 | + } |
| 73 | + |
| 74 | + let fn_name = f.get_name(); |
| 75 | + if let Some(x) = functions.iter().find(|&f| f == fn_name) { |
| 76 | + if !x.contains('$') { |
| 77 | + f.set_name(module_name.clone() + "$" + fn_name); |
| 78 | + } |
| 79 | + } |
| 80 | + } |
| 81 | + Expr::Tensor(ref mut exprs) => { |
| 82 | + for expr in exprs { |
| 83 | + mangle_fns(expr, module_name, functions); |
| 84 | + } |
| 85 | + } |
| 86 | + Expr::Conditional(ref mut c, ref mut t, ref mut f) => { |
| 87 | + mangle_fns(c, module_name, functions); |
| 88 | + for expr in t { |
| 89 | + mangle_fns(expr, module_name, functions); |
| 90 | + } |
| 91 | + for expr in f { |
| 92 | + mangle_fns(expr, module_name, functions); |
| 93 | + } |
| 94 | + } |
| 95 | + Expr::Var(_) => {} |
| 96 | + Expr::Literal(_) => {} |
| 97 | + } |
| 98 | +} |
| 99 | + |
| 100 | +/// Replaces all occurences of `fn_name` in instructions with |
| 101 | +/// (`mod_name + `$` + `fn_name`). |
| 102 | +fn mangle_expr_check(expr: &mut QccCell<Expr>, mod_name: &Ident, fn_name: &Ident) { |
| 103 | + // TODO: Support tensors |
| 104 | + match *expr.as_ref().borrow_mut() { |
| 105 | + Expr::BinaryExpr(ref mut lhs, _, ref mut rhs) => { |
| 106 | + mangle_expr_check(lhs, mod_name, fn_name); |
| 107 | + mangle_expr_check(rhs, mod_name, fn_name); |
| 108 | + } |
| 109 | + Expr::Let(_, ref mut val) => { |
| 110 | + mangle_expr_check(val, mod_name, fn_name); |
| 111 | + } |
| 112 | + Expr::FnCall(ref mut f, ref mut args) => { |
| 113 | + for arg in args { |
| 114 | + mangle_expr_check(arg, mod_name, fn_name); |
| 115 | + } |
| 116 | + |
| 117 | + if *f.get_name() == *fn_name { |
| 118 | + f.set_name(mod_name.to_owned() + "$" + f.get_name()); |
| 119 | + } |
| 120 | + } |
| 121 | + Expr::Tensor(ref mut exprs) => { |
| 122 | + for expr in exprs { |
| 123 | + mangle_expr_check(expr, mod_name, fn_name); |
| 124 | + } |
| 125 | + } |
| 126 | + Expr::Conditional(ref mut c, ref mut t, ref mut f) => { |
| 127 | + mangle_expr_check(c, mod_name, fn_name); |
| 128 | + for expr in t { |
| 129 | + mangle_expr_check(expr, mod_name, fn_name); |
| 130 | + } |
| 131 | + for expr in f { |
| 132 | + mangle_expr_check(expr, mod_name, fn_name); |
| 133 | + } |
| 134 | + } |
| 135 | + Expr::Var(_) => {} |
| 136 | + Expr::Literal(_) => {} |
| 137 | + } |
| 138 | +} |
| 139 | + |
| 140 | +/// Takes in a mutable reference to a module and replaces all function call |
| 141 | +/// instances with a mangled string, which is calculated from a module name and |
| 142 | +/// a function name. |
| 143 | +pub(crate) fn mangle_module(module: &mut ModuleAST, mod_name: Ident, fn_name: Ident) -> Result<()> { |
| 144 | + for mut function in module { |
| 145 | + for instruction in &mut *function { |
| 146 | + mangle_expr_check(instruction, &mod_name, &fn_name); |
| 147 | + } |
| 148 | + } |
| 149 | + |
| 150 | + Ok(()) |
| 151 | +} |
| 152 | + |
| 153 | +pub(crate) fn sanitize(identifier: Ident) -> Ident { |
| 154 | + let mut sanitized = String::new(); |
| 155 | + for c in identifier.bytes() { |
| 156 | + if c.is_ascii_alphanumeric() { |
| 157 | + sanitized += &(c as char).to_string(); |
| 158 | + } else { |
| 159 | + sanitized += "_"; // TODO: Using '$' |
| 160 | + } |
| 161 | + } |
| 162 | + sanitized |
| 163 | +} |
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