cpclib_asm/assembler/
section.rs

1use crate::{Env, ExprResult};
2
3#[derive(Clone, Debug)]
4pub struct Section {
5    /// Name of the section
6    pub(crate) name: String,
7    /// Start address of the section
8    pub(crate) start: u16,
9    /// Last (included) address of the section
10    pub(crate) stop: u16,
11    /// Expected mmr configuration
12    pub(crate) mmr: u8,
13
14    pub(crate) output_adr: u16,
15    pub(crate) max_output_adr: u16,
16    pub(crate) code_adr: u16
17}
18
19impl Section {
20    pub(crate) fn new(name: &str, start: u16, stop: u16, mmr: u8) -> Self {
21        Section {
22            mmr,
23            name: name.to_owned(),
24            start,
25            stop,
26
27            output_adr: start,
28            code_adr: start,
29
30            max_output_adr: start
31        }
32    }
33
34    pub fn contains(&self, addr: u16) -> bool {
35        addr >= self.start && addr <= self.stop
36    }
37
38    pub(crate) fn new_pass(&mut self) {
39        self.output_adr = self.start;
40        self.code_adr = self.start;
41    }
42
43    pub fn length(&self) -> u16 {
44        self.stop - self.start + 1
45    }
46
47    pub fn used(&self) -> u16 {
48        self.max_output_adr - self.start
49    }
50}
51
52/// Returns the address of the beginning of the section
53pub fn section_start(section_name: &str, env: &Env) -> Result<ExprResult, crate::AssemblerError> {
54    Ok(env.get_section_description(section_name)?.start.into())
55}
56
57pub fn section_stop(section_name: &str, env: &Env) -> Result<ExprResult, crate::AssemblerError> {
58    Ok(env.get_section_description(section_name)?.stop.into())
59}
60
61/// Returns the number of bytes available  in the section
62pub fn section_length(section_name: &str, env: &Env) -> Result<ExprResult, crate::AssemblerError> {
63    Ok(env.get_section_description(section_name)?.length().into())
64}
65
66/// Returns the number of bytes consummed in the section
67pub fn section_used(section_name: &str, env: &Env) -> Result<ExprResult, crate::AssemblerError> {
68    Ok(env.get_section_description(section_name)?.used().into())
69}
70
71pub fn section_mmr(section_name: &str, env: &Env) -> Result<ExprResult, crate::AssemblerError> {
72    Ok(env.get_section_description(section_name)?.mmr.into())
73}
cpclib_asm/assembler/section.rs

cpclib_asm/assembler/
section.rs
