fn add_parser_export()

in cli/src/generate/render.rs [841:949]
98 lines of code
6 McCabe index (conditional complexity)

    fn add_parser_export(&mut self) {
        let language_function_name = format!("tree_sitter_{}", self.language_name);
        let external_scanner_name = format!("{}_external_scanner", language_function_name);

        if !self.syntax_grammar.external_tokens.is_empty() {
            add_line!(self, "void *{}_create(void);", external_scanner_name);
            add_line!(self, "void {}_destroy(void *);", external_scanner_name);
            add_line!(
                self,
                "bool {}_scan(void *, TSLexer *, const bool *);",
                external_scanner_name
            );
            add_line!(
                self,
                "unsigned {}_serialize(void *, char *);",
                external_scanner_name
            );
            add_line!(
                self,
                "void {}_deserialize(void *, const char *, unsigned);",
                external_scanner_name
            );
            add_line!(self, "");
        }

        add_line!(self, "#ifdef _WIN32");
        add_line!(self, "#define extern __declspec(dllexport)");
        add_line!(self, "#endif");
        add_line!(self, "");

        add_line!(
            self,
            "extern const TSLanguage *{}(void) {{",
            language_function_name
        );
        indent!(self);
        add_line!(self, "static TSLanguage language = {{");
        indent!(self);
        add_line!(self, ".version = LANGUAGE_VERSION,");
        add_line!(self, ".symbol_count = SYMBOL_COUNT,");
        add_line!(self, ".alias_count = ALIAS_COUNT,");
        add_line!(self, ".token_count = TOKEN_COUNT,");
        add_line!(self, ".symbol_metadata = ts_symbol_metadata,");
        add_line!(
            self,
            ".parse_table = (const unsigned short *)ts_parse_table,"
        );
        add_line!(self, ".parse_actions = ts_parse_actions,");
        add_line!(self, ".lex_modes = ts_lex_modes,");
        add_line!(self, ".symbol_names = ts_symbol_names,");

        if !self.alias_ids.is_empty() {
            add_line!(
                self,
                ".alias_sequences = (const TSSymbol *)ts_alias_sequences,"
            );
        }

        add_line!(self, ".field_count = FIELD_COUNT,");

        if !self.field_names.is_empty() {
            add_line!(self, ".field_names = ts_field_names,");
            add_line!(
                self,
                ".field_map_slices = (const TSFieldMapSlice *)ts_field_map_slices,"
            );
            add_line!(
                self,
                ".field_map_entries = (const TSFieldMapEntry *)ts_field_map_entries,"
            );
        }

        add_line!(
            self,
            ".max_alias_sequence_length = MAX_ALIAS_SEQUENCE_LENGTH,"
        );
        add_line!(self, ".lex_fn = ts_lex,");

        if let Some(keyword_capture_token) = self.keyword_capture_token {
            add_line!(self, ".keyword_lex_fn = ts_lex_keywords,");
            add_line!(
                self,
                ".keyword_capture_token = {},",
                self.symbol_ids[&keyword_capture_token]
            );
        }

        add_line!(self, ".external_token_count = EXTERNAL_TOKEN_COUNT,");

        if !self.syntax_grammar.external_tokens.is_empty() {
            add_line!(self, ".external_scanner = {{");
            indent!(self);
            add_line!(self, "(const bool *)ts_external_scanner_states,");
            add_line!(self, "ts_external_scanner_symbol_map,");
            add_line!(self, "{}_create,", external_scanner_name);
            add_line!(self, "{}_destroy,", external_scanner_name);
            add_line!(self, "{}_scan,", external_scanner_name);
            add_line!(self, "{}_serialize,", external_scanner_name);
            add_line!(self, "{}_deserialize,", external_scanner_name);
            dedent!(self);
            add_line!(self, "}},");
        }
        dedent!(self);

        add_line!(self, "}};");
        add_line!(self, "return &language;");
        dedent!(self);
        add_line!(self, "}}");
    }