golem-common 1.2.5

Shared code between Golem services
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

// Copyright 2024-2025 Golem Cloud
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use golem_wasm_ast::analysis::{AnalysedExport, AnalysedFunction, AnalysedInstance};

use rib::{ParsedFunctionName, ParsedFunctionReference, ParsedFunctionSite};

fn instances(exports: &Vec<AnalysedExport>) -> Vec<AnalysedInstance> {
    let mut instances = vec![];
    for export in exports {
        if let AnalysedExport::Instance(instance) = export {
            instances.push(instance.clone())
        }
    }
    instances
}

fn functions(exports: &Vec<AnalysedExport>) -> Vec<AnalysedFunction> {
    let mut functions = vec![];
    for export in exports {
        if let AnalysedExport::Function(function) = export {
            functions.push(function.clone())
        }
    }
    functions
}

pub fn function_by_name(
    exports: &Vec<AnalysedExport>,
    name: &str,
) -> Result<Option<AnalysedFunction>, String> {
    let parsed = ParsedFunctionName::parse(name)?;

    match &parsed.site().interface_name() {
        None => Ok(functions(exports).iter().find(|f| f.name == *name).cloned()),
        Some(interface_name) => {
            let exported_function = instances(exports)
                .iter()
                .find(|instance| instance.name == *interface_name)
                .and_then(|instance| {
                    instance
                        .functions
                        .iter()
                        .find(|f| f.name == parsed.function().function_name())
                        .cloned()
                });
            if exported_function.is_none() {
                match parsed.method_as_static() {
                    Some(parsed_static) => Ok(instances(exports)
                        .iter()
                        .find(|instance| instance.name == *interface_name)
                        .and_then(|instance| {
                            instance
                                .functions
                                .iter()
                                .find(|f| f.name == parsed_static.function().function_name())
                                .cloned()
                        })),
                    None => Ok(None),
                }
            } else {
                Ok(exported_function)
            }
        }
    }
}

pub fn find_resource_site(
    exports: &[AnalysedExport],
    resource_name: &str,
) -> Option<ParsedFunctionSite> {
    fn find_resource_site_impl(
        site: ParsedFunctionSite,
        functions: &[AnalysedFunction],
        resource_name: &str,
    ) -> Option<ParsedFunctionSite> {
        let constructor = ParsedFunctionName::new(
            site.clone(),
            ParsedFunctionReference::RawResourceConstructor {
                resource: resource_name.to_string(),
            },
        );
        if functions
            .iter()
            .any(|f| f.name == constructor.function().function_name())
        {
            Some(site)
        } else {
            None
        }
    }

    let global_functions = exports
        .iter()
        .filter_map(|export| {
            if let AnalysedExport::Function(f) = export {
                Some(f.clone())
            } else {
                None
            }
        })
        .collect::<Vec<AnalysedFunction>>();

    if let Some(result) =
        find_resource_site_impl(ParsedFunctionSite::Global, &global_functions, resource_name)
    {
        Some(result)
    } else {
        for export in exports {
            if let AnalysedExport::Instance(instance) = export {
                if let Some(result) = find_resource_site_impl(
                    ParsedFunctionSite::Interface {
                        name: instance.name.clone(),
                    },
                    &instance.functions,
                    resource_name,
                ) {
                    return Some(result);
                }
            }
        }

        None
    }
}