bind/compiler/
instruction.rs

1// Copyright 2019 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5//! Bind rules instructions
6
7use crate::compiler::Symbol;
8use num_derive::FromPrimitive;
9use std::fmt;
10
11#[derive(Clone, Copy, PartialEq, Eq, Debug, Hash)]
12pub struct DeviceProperty {
13    pub key: u32,
14    pub value: u32,
15}
16
17impl fmt::Display for DeviceProperty {
18    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
19        write!(f, "{:#06x} = {:#010x}", self.key, self.value)
20    }
21}
22
23/// For all conditions (except Always), the operands to the condition
24/// are (parameter_b, value) pairs in the final encoding.
25#[derive(Clone, PartialEq, Eq)]
26pub enum Condition {
27    Always,
28    Equal(Symbol, Symbol),
29    NotEqual(Symbol, Symbol),
30}
31
32#[derive(Clone)]
33pub enum Instruction {
34    Abort(Condition),
35    Match(Condition),
36    Goto(Condition, u32),
37    Label(u32),
38}
39
40#[derive(Clone, FromPrimitive, PartialEq)]
41pub enum RawAstLocation {
42    Invalid = 0,
43    ConditionStatement,
44    AcceptStatementValue,
45    AcceptStatementFailure,
46    IfCondition,
47    FalseStatement,
48}
49
50#[derive(Clone)]
51pub struct InstructionDebug {
52    pub line: u32,
53    pub ast_location: RawAstLocation,
54    pub extra: u32,
55}
56
57impl InstructionDebug {
58    pub fn none() -> Self {
59        InstructionDebug { line: 0, ast_location: RawAstLocation::Invalid, extra: 0 }
60    }
61}
62
63pub struct InstructionInfo {
64    pub instruction: Instruction,
65    pub debug: InstructionDebug,
66}
67
68impl InstructionInfo {
69    pub fn new(instruction: Instruction) -> Self {
70        InstructionInfo { instruction, debug: InstructionDebug::none() }
71    }
72}
bind/compiler/instruction.rs

bind/compiler/
instruction.rs
