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 (line, col_start, col_end) = ea.span_to_ref_loc(call.method.span);
54            ea.codebase.mark_method_referenced_at(
55                &fqcn,
56                method_name,
57                ea.file.clone(),
58                line,
59                col_start,
60                col_end,
61            );
62            if let Some(msg) = method.deprecated.clone() {
63                ea.emit(
64                    IssueKind::DeprecatedMethodCall {
65                        class: fqcn.clone(),
66                        method: method_name.to_string(),
67                        message: Some(msg).filter(|m| !m.is_empty()),
68                    },
69                    Severity::Info,
70                    span,
71                );
72            }
73            let arg_names: Vec<Option<String>> = call
74                .args
75                .iter()
76                .map(|a| a.name.as_ref().map(|n| n.to_string_repr().into_owned()))
77                .collect();
78            let arg_can_be_byref: Vec<bool> = call
79                .args
80                .iter()
81                .map(|a| expr_can_be_passed_by_reference(&a.value))
82                .collect();
83            check_args(
84                ea,
85                CheckArgsParams {
86                    fn_name: method_name,
87                    params: &method.params,
88                    arg_types: &arg_types,
89                    arg_spans: &arg_spans,
90                    arg_names: &arg_names,
91                    arg_can_be_byref: &arg_can_be_byref,
92                    call_span: span,
93                    has_spread: call.args.iter().any(|a| a.unpack),
94                },
95            );
96            let ret_raw = method
97                .effective_return_type()
98                .cloned()
99                .unwrap_or_else(Union::mixed);
100            let fqcn_arc: Arc<str> = Arc::from(fqcn.as_str());
101            let ret = substitute_static_in_return(ret_raw, &fqcn_arc);
102            ea.record_symbol(
103                call.method.span,
104                SymbolKind::StaticCall {
105                    class: fqcn_arc,
106                    method: Arc::from(method_name),
107                },
108                ret.clone(),
109            );
110            ret
111        } else if ea.codebase.type_exists(&fqcn) && !ea.codebase.has_unknown_ancestor(&fqcn) {
112            let is_interface = ea.codebase.interfaces.contains_key(fqcn.as_str());
113            let is_abstract = ea.codebase.is_abstract_class(&fqcn);
114            if is_interface
115                || is_abstract
116                || ea.codebase.get_method(&fqcn, "__callStatic").is_some()
117            {
118                Union::mixed()
119            } else {
120                ea.emit(
121                    IssueKind::UndefinedMethod {
122                        class: fqcn,
123                        method: method_name.to_string(),
124                    },
125                    Severity::Error,
126                    span,
127                );
128                Union::mixed()
129            }
130        } else if !ea.codebase.type_exists(&fqcn)
131            && !matches!(fqcn.as_str(), "self" | "static" | "parent")
132        {
133            ea.emit(
134                IssueKind::UndefinedClass { name: fqcn },
135                Severity::Error,
136                call.class.span,
137            );
138            Union::mixed()
139        } else {
140            Union::mixed()
141        }
142    }
143
144    pub fn analyze_static_dyn_method_call<'a, 'arena, 'src>(
145        ea: &mut ExpressionAnalyzer<'a>,
146        call: &StaticDynMethodCallExpr<'arena, 'src>,
147        ctx: &mut Context,
148    ) -> Union {
149        for arg in call.args.iter() {
150            ea.analyze(&arg.value, ctx);
151        }
152        Union::mixed()
153    }
154}
155
156fn resolve_static_class(name: &str, ctx: &Context) -> String {
157    match name.to_lowercase().as_str() {
158        "self" => ctx.self_fqcn.as_deref().unwrap_or("self").to_string(),
159        "parent" => ctx.parent_fqcn.as_deref().unwrap_or("parent").to_string(),
160        "static" => ctx
161            .static_fqcn
162            .as_deref()
163            .unwrap_or(ctx.self_fqcn.as_deref().unwrap_or("static"))
164            .to_string(),
165        _ => name.to_string(),
166    }
167}
mir_analyzer/call/static_call.rs

mir_analyzer/call/
static_call.rs
