harn-vm 0.10.177

Async bytecode virtual machine for the Harn programming language
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152

//! Program runners for runtime tests. Setup runs after stdlib registration.

use crate::compiler::{Compiler, CompilerOptions};
use crate::stdlib::register_vm_stdlib;
use crate::vm::*;
use crate::{Chunk, InlineCacheEntry, VmError, VmValue};
use harn_clock::test_support::run_local;
use harn_lexer::Lexer;
use harn_parser::Parser;
use std::collections::HashSet;
use std::path::Path;

fn compile(source: &str, compiler: Compiler) -> Result<Chunk, String> {
    let tokens = Lexer::new(source)
        .tokenize()
        .map_err(|error| error.to_string())?;
    let program = Parser::new(tokens)
        .parse()
        .map_err(|error| error.to_string())?;
    compiler
        .compile(&program)
        .map_err(|error| error.to_string())
}

fn test_vm() -> Vm {
    let mut vm = crate::new_vm();
    register_vm_stdlib(&mut vm);
    vm.set_harness(crate::Harness::real());
    vm
}

async fn execute(chunk: Chunk, setup: impl FnOnce(&mut Vm)) -> Result<(String, VmValue), VmError> {
    let mut vm = test_vm();
    setup(&mut vm);
    let result = vm.execute(&chunk).await?;
    Ok((vm.output().to_string(), result))
}

pub(in crate::vm_tests) fn run_harn(source: &str) -> (String, VmValue) {
    run_harn_with_options(source, CompilerOptions::optimized())
}

pub(super) fn run_harn_with_options(source: &str, options: CompilerOptions) -> (String, VmValue) {
    run_local(async {
        execute(
            compile(source, Compiler::with_options(options)).unwrap(),
            |_| {},
        )
        .await
        .unwrap()
    })
}

pub(super) fn run_harn_with_legacy_ambient_capabilities(source: &str) -> (String, VmValue) {
    run_local(async {
        let options = CompilerOptions::optimized().with_legacy_ambient_capabilities();
        let chunk = compile(source, Compiler::with_options(options)).unwrap();
        let mut vm = crate::new_vm();
        vm.set_harness(crate::Harness::real());
        let root = vm.root_harness_value().expect("test installs root Harness");
        vm.set_global("harness", root);
        register_vm_stdlib(&mut vm);
        let result = vm.execute(&chunk).await.unwrap();
        (vm.output().to_string(), result)
    })
}

pub(in crate::vm_tests) fn run_harn_result_display_with_options(
    source: &str,
    options: CompilerOptions,
) -> Result<(String, String), String> {
    run_local(async {
        let chunk = compile(source, Compiler::with_options(options))?;
        execute(chunk, |_| {})
            .await
            .map(|(output, value)| (output, value.display()))
            .map_err(|error| error.to_string())
    })
}

pub(super) fn run_harn_with_inline_cache_entries(
    source: &str,
) -> (Vec<InlineCacheEntry>, String, VmValue) {
    run_local(async {
        let chunk = compile(source, Compiler::new()).unwrap();
        let mut vm = test_vm();
        let result = vm.execute(&chunk).await.unwrap();
        let entries = vm.inline_cache_entries().cloned().collect();
        (entries, vm.output().to_string(), result)
    })
}

pub(super) fn run_output(source: &str) -> String {
    run_harn(source).0.trim_end().to_string()
}

pub(in crate::vm_tests) fn run_harn_at(
    path: &Path,
    source: &str,
) -> Result<(String, VmValue), VmError> {
    run_harn_with_setup(source, |vm| {
        vm.set_source_info(&path.display().to_string(), source);
        if let Some(parent) = path.parent() {
            vm.set_source_dir(parent);
        }
    })
}

pub(super) fn run_harn_result(source: &str) -> Result<(String, VmValue), VmError> {
    run_local(run_harn_result_async(source))
}

pub(in crate::vm_tests) async fn run_harn_result_async(
    source: &str,
) -> Result<(String, VmValue), VmError> {
    execute(compile(source, Compiler::new()).unwrap(), |_| {}).await
}

pub(super) fn run_harn_with_setup(
    source: &str,
    setup: impl FnOnce(&mut Vm),
) -> Result<(String, VmValue), VmError> {
    run_local(async { execute(compile(source, Compiler::new()).unwrap(), setup).await })
}

pub(super) fn run_harn_with_policy(
    source: &str,
    policy: crate::orchestration::CapabilityPolicy,
) -> Result<(String, VmValue), VmError> {
    crate::orchestration::push_execution_policy(policy);
    let result = run_harn_result(source);
    crate::orchestration::pop_execution_policy();
    result
}

pub(super) fn run_vm(source: &str) -> String {
    run_harn_result(source).unwrap().0
}

pub(super) fn run_vm_err(source: &str) -> String {
    match run_harn_result(source) {
        Err(error) => error.to_string(),
        Ok(_) => panic!("Expected error"),
    }
}

pub(super) fn run_harn_with_denied(
    source: &str,
    denied: HashSet<String>,
) -> Result<(String, VmValue), VmError> {
    run_harn_with_setup(source, |vm| vm.set_denied_builtins(denied))
}