mir_analyzer/call/
static_call.rs

1use std::sync::Arc;
2
3use php_ast::ast::{ExprKind, StaticDynMethodCallExpr, StaticMethodCallExpr};
4use php_ast::Span;
5
6use mir_issues::{IssueKind, Severity};
7use mir_types::Union;
8
9use crate::context::Context;
10use crate::expr::ExpressionAnalyzer;
11use crate::symbol::SymbolKind;
12
13use super::args::{
14    check_args, expr_can_be_passed_by_reference, spread_element_type, substitute_static_in_return,
15    CheckArgsParams,
16};
17use super::CallAnalyzer;
18
19impl CallAnalyzer {
20    pub fn analyze_static_method_call<'a, 'arena, 'src>(
21        ea: &mut ExpressionAnalyzer<'a>,
22        call: &StaticMethodCallExpr<'arena, 'src>,
23        ctx: &mut Context,
24        span: Span,
25    ) -> Union {
26        let method_name = match &call.method.kind {
27            ExprKind::Identifier(name) => name.as_str(),
28            _ => return Union::mixed(),
29        };
30
31        let fqcn = match &call.class.kind {
32            ExprKind::Identifier(name) => ea.codebase.resolve_class_name(&ea.file, name.as_ref()),
33            _ => return Union::mixed(),
34        };
35
36        let fqcn = resolve_static_class(&fqcn, ctx);
37
38        let arg_types: Vec<Union> = call
39            .args
40            .iter()
41            .map(|arg| {
42                let ty = ea.analyze(&arg.value, ctx);
43                if arg.unpack {
44                    spread_element_type(&ty)
45                } else {
46                    ty
47                }
48            })
49            .collect();
50        let arg_spans: Vec<Span> = call.args.iter().map(|a| a.span).collect();
51
52        if let Some(method) = ea.codebase.get_method(&fqcn, method_name) {
53            let method_span = call.method.span;
54            ea.codebase.mark_method_referenced_at(
55                &fqcn,
56                method_name,
57                ea.file.clone(),
58                method_span.start,
59                method_span.end,
60            );
61            if let Some(msg) = method.deprecated.clone() {
62                ea.emit(
63                    IssueKind::DeprecatedMethodCall {
64                        class: fqcn.clone(),
65                        method: method_name.to_string(),
66                        message: Some(msg).filter(|m| !m.is_empty()),
67                    },
68                    Severity::Info,
69                    span,
70                );
71            }
72            let arg_names: Vec<Option<String>> = call
73                .args
74                .iter()
75                .map(|a| a.name.as_ref().map(|n| n.to_string_repr().into_owned()))
76                .collect();
77            let arg_can_be_byref: Vec<bool> = call
78                .args
79                .iter()
80                .map(|a| expr_can_be_passed_by_reference(&a.value))
81                .collect();
82            check_args(
83                ea,
84                CheckArgsParams {
85                    fn_name: method_name,
86                    params: &method.params,
87                    arg_types: &arg_types,
88                    arg_spans: &arg_spans,
89                    arg_names: &arg_names,
90                    arg_can_be_byref: &arg_can_be_byref,
91                    call_span: span,
92                    has_spread: call.args.iter().any(|a| a.unpack),
93                },
94            );
95            let ret_raw = method
96                .effective_return_type()
97                .cloned()
98                .unwrap_or_else(Union::mixed);
99            let fqcn_arc: Arc<str> = Arc::from(fqcn.as_str());
100            let ret = substitute_static_in_return(ret_raw, &fqcn_arc);
101            ea.record_symbol(
102                method_span,
103                SymbolKind::StaticCall {
104                    class: fqcn_arc,
105                    method: Arc::from(method_name),
106                },
107                ret.clone(),
108            );
109            ret
110        } else if ea.codebase.type_exists(&fqcn) && !ea.codebase.has_unknown_ancestor(&fqcn) {
111            let is_interface = ea.codebase.interfaces.contains_key(fqcn.as_str());
112            let is_abstract = ea.codebase.is_abstract_class(&fqcn);
113            if is_interface
114                || is_abstract
115                || ea.codebase.get_method(&fqcn, "__callStatic").is_some()
116            {
117                Union::mixed()
118            } else {
119                ea.emit(
120                    IssueKind::UndefinedMethod {
121                        class: fqcn,
122                        method: method_name.to_string(),
123                    },
124                    Severity::Error,
125                    span,
126                );
127                Union::mixed()
128            }
129        } else if !ea.codebase.type_exists(&fqcn)
130            && !matches!(fqcn.as_str(), "self" | "static" | "parent")
131        {
132            ea.emit(
133                IssueKind::UndefinedClass { name: fqcn },
134                Severity::Error,
135                call.class.span,
136            );
137            Union::mixed()
138        } else {
139            Union::mixed()
140        }
141    }
142
143    pub fn analyze_static_dyn_method_call<'a, 'arena, 'src>(
144        ea: &mut ExpressionAnalyzer<'a>,
145        call: &StaticDynMethodCallExpr<'arena, 'src>,
146        ctx: &mut Context,
147    ) -> Union {
148        for arg in call.args.iter() {
149            ea.analyze(&arg.value, ctx);
150        }
151        Union::mixed()
152    }
153}
154
155fn resolve_static_class(name: &str, ctx: &Context) -> String {
156    match name.to_lowercase().as_str() {
157        "self" => ctx.self_fqcn.as_deref().unwrap_or("self").to_string(),
158        "parent" => ctx.parent_fqcn.as_deref().unwrap_or("parent").to_string(),
159        "static" => ctx
160            .static_fqcn
161            .as_deref()
162            .unwrap_or(ctx.self_fqcn.as_deref().unwrap_or("static"))
163            .to_string(),
164        _ => name.to_string(),
165    }
166}
mir_analyzer/call/static_call.rs

mir_analyzer/call/
static_call.rs
