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//! `Getter` implementation for C.
#![allow(clippy::wildcard_imports, clippy::enum_glob_use)]
use super::*;
impl Getter for CCode {
fn get_func_space_name<'a>(node: &Node, code: &'a [u8]) -> Option<&'a str> {
// Issue #285 contract: every `C::FunctionDefinition*` alias must
// be enumerated here AND in `get_space_kind` below AND in
// `is_func` / `is_func_space` (see `src/checker.rs`). C has no
// C++ name forms (operator-cast / destructor / operator / qualified
// / template names), so the declarator name is a plain identifier.
match node.kind_id().into() {
C::FunctionDefinition | C::FunctionDefinition2 => {
// we're in a function_definition so need to get the declarator
if let Some(declarator) = node.child_by_field_name("declarator") {
let declarator_node = declarator;
if let Some(fd) = declarator_node.first_occurrence(|id| {
C::FunctionDeclarator == id
|| C::FunctionDeclarator2 == id
|| C::FunctionDeclarator3 == id
}) && let Some(first) = fd.child(0)
{
match first.kind_id().into() {
C::TypeIdentifier | C::Identifier | C::FieldIdentifier => {
return node_text(code, &first);
}
_ => {}
}
}
}
}
_ => {
if let Some(name) = node.child_by_field_name("name") {
return node_text(code, &name);
}
}
}
None
}
fn get_space_kind(node: &Node) -> SpaceKind {
use C::*;
// C has no classes/namespaces, and struct/union/enum hold no
// functions, so the only spaces are functions and the unit
// (matching `is_func_space` in `src/checker.rs`, #285).
match node.kind_id().into() {
FunctionDefinition | FunctionDefinition2 => SpaceKind::Function,
TranslationUnit => SpaceKind::Unit,
_ => SpaceKind::Unknown,
}
}
fn get_op_type(node: &Node) -> HalsteadType {
use C::*;
// C's operator alphabet is the C++ set minus the C++-only forms
// (`.*` / `->*`, `new` / `delete`, `try` / `catch` / `throw`,
// `<=>`, the `>>`-closing `GT2`). Raw string literals and the
// `namespace`-qualified identifier likewise do not exist in C.
// `LPAREN2` is a defensive arm (collapsed to `LPAREN` before
// `kind_id()`; #768, see the Cpp note).
match node.kind_id().into() {
DOT | LPAREN | LPAREN2 | COMMA | STAR | GTGT | COLON | SEMI | Return | Break
| Continue | If | Else | Switch | Case | Default | For | While | Goto | Do | EQ
| AMPAMP | PIPEPIPE | DASH | DASHDASH | DASHGT | PLUS | PLUSPLUS | SLASH | PERCENT
| PIPE | AMP | LTLT | TILDE | LT | LTEQ | EQEQ | BANGEQ | GTEQ | GT | PLUSEQ
| DASHEQ | BANG | STAREQ | SLASHEQ | PERCENTEQ | GTGTEQ | LTLTEQ | AMPEQ | CARET
| CARETEQ | PIPEEQ | LBRACK | LBRACE | QMARK | PrimitiveType
| TypeSpecifier | Sizeof
// A `sized_type_specifier` carries its `unsigned`/`signed`/`long`/
// `short` modifiers as bare keyword tokens, not as `primitive_type`
// children (`unsigned int` is `unsigned` + `primitive_type int`;
// `signed long` and `long long` have no `primitive_type` at all).
// Without these arms the modifiers fall into `Unknown` and are
// dropped, so `unsigned int` collapses to just `int` and a standalone
// `signed long` contributes nothing to n1/N1 (issue #466). Each
// modifier has a distinct kind_id, so keying by kind_id (the default
// `operators` store) keeps them distinct in n1 while `long long`'s
// two `long` tokens correctly fold to one n1 entry but two N1 hits.
| Signed | Unsigned | Long | Short => HalsteadType::Operator,
Identifier | TypeIdentifier | FieldIdentifier | StringLiteral | NumberLiteral
| True | False | Null | DOTDOTDOT => HalsteadType::Operand,
_ => HalsteadType::Unknown,
}
}
get_operator!(C);
}