scc/src/config.h

#ifndef __SCC_CONFIG_H__
#define __SCC_CONFIG_H__

#include <argparse.h>

typedef struct {
    const char *input_file;
    const char *output_file;
    int verbose;
    scc_argparse_list_t include_paths;
    scc_argparse_list_t define_macros;
    cbool emit_lex;
    cbool emit_pp;
    cbool emit_ast;
    cbool emit_ir;
} scc_config_t;

static void setup_argparse(scc_argparse_t *argparse, scc_config_t *config,
                           scc_argparse_lang_t lang) {
    enum {
        SCC_HINT_PROG_NAME,
        SCC_HINT_DESCRIPTION,
        SCC_HINT_OUTPUT_FILE,
        SCC_HINT_INPUT_FILE,
        SCC_HINT_INCLUDE_PATH,
        SCC_HINT_DEFINED_MACRO,
        SCC_HINT_VERBOSE,

        SCC_HINT_EMIT_LEX,
        SCC_HINT_EMIT_PP,
        SCC_HINT_EMIT_AST,
        SCC_HINT_EMIT_IR,
    };
    static const char *scc_hints_en[] = {
        [SCC_HINT_PROG_NAME] = "scc",
        [SCC_HINT_DESCRIPTION] = "A simple C compiler",
        [SCC_HINT_OUTPUT_FILE] =
            "Output file (`-` means standard output stream file)",
        [SCC_HINT_INPUT_FILE] = "Input source file",
        [SCC_HINT_INCLUDE_PATH] = "Add directory to the include search paths",
        [SCC_HINT_DEFINED_MACRO] = "Define a macro",
        [SCC_HINT_VERBOSE] = "Increase verbosity (can be used multiple times)",
        [SCC_HINT_EMIT_LEX] = "Generate lexer sources tokens and exit",
        [SCC_HINT_EMIT_PP] = "Generate preprocessed tokens and exit",
        [SCC_HINT_EMIT_AST] = "Generate AST and exit",
        [SCC_HINT_EMIT_IR] = "Generate IR and exit",
    };
    static const char *scc_hints_zh[] = {
        [SCC_HINT_PROG_NAME] = "scc",
        [SCC_HINT_DESCRIPTION] = "一个简单的C编译器",
        [SCC_HINT_OUTPUT_FILE] = "输出文件(`-`表示标准输出流文件)",
        [SCC_HINT_INPUT_FILE] = "输入源文件",
        [SCC_HINT_INCLUDE_PATH] = "添加系统头文件到搜索路径",
        [SCC_HINT_DEFINED_MACRO] = "定义宏",
        [SCC_HINT_VERBOSE] = "增加详细输出(可多次使用)",
        [SCC_HINT_EMIT_LEX] = "生成`源代码的词法单元`并退出",
        [SCC_HINT_EMIT_PP] = "生成`预处理后的词法单元`并退出",
        [SCC_HINT_EMIT_AST] = "生成`抽象语法树`并退出",
        [SCC_HINT_EMIT_IR] = "生成`中间代码`并退出",
    };

    const char **scc_hints;
    switch (lang) {
    case SCC_ARGPARSE_LANG_EN:
        scc_hints = scc_hints_en;
        break;
    case SCC_ARGPARSE_LANG_ZH:
        scc_hints = scc_hints_zh;
        break;
    default:
        scc_hints = scc_hints_en;
        break;
    }

    scc_argparse_init(argparse, scc_hints[SCC_HINT_PROG_NAME],
                      scc_hints[SCC_HINT_DESCRIPTION]);
    argparse->lang = lang;
    scc_argparse_cmd_t *root = scc_argparse_get_root(argparse);

    // -o, --output
    scc_argparse_opt_t opt_output;
    scc_argparse_opt_init(&opt_output, 'o', "output",
                          scc_hints[SCC_HINT_OUTPUT_FILE]);
    scc_argparse_spec_setup_string(&opt_output.spec, &(config->output_file));
    scc_argparse_cmd_add_opt(root, &opt_output);

    // input file (必需)
    scc_argparse_arg_t arg_input;
    scc_argparse_arg_init(&arg_input, "input", scc_hints[SCC_HINT_INPUT_FILE]);
    scc_argparse_spec_setup_string(&arg_input.spec, &(config->input_file));
    scc_argparse_spec_set_required(&arg_input.spec, true);
    scc_argparse_cmd_add_arg(root, &arg_input);

    // -I, --include (添加额外的系统头文件搜索路径)
    scc_argparse_opt_t opt_include;
    scc_argparse_opt_init(&opt_include, 'I', "include",
                          scc_hints[SCC_HINT_INCLUDE_PATH]);
    scc_argparse_spec_setup_list(&opt_include.spec, &(config->include_paths));
    scc_argparse_cmd_add_opt(root, &opt_include);

    // -D, --define (定义宏)
    scc_argparse_opt_t opt_define;
    scc_argparse_opt_init(&opt_define, 'D', "define",
                          scc_hints[SCC_HINT_DEFINED_MACRO]);
    scc_argparse_spec_setup_list(&opt_define.spec, &(config->define_macros));
    scc_argparse_cmd_add_opt(root, &opt_define);

    // -v, --verbose (计数)
    scc_argparse_opt_t opt_verbose;
    scc_argparse_opt_init(&opt_verbose, 'V', "verbose",
                          scc_hints[SCC_HINT_VERBOSE]);
    scc_argparse_spec_setup_count(&opt_verbose.spec, &(config->verbose));
    scc_argparse_cmd_add_opt(root, &opt_verbose);

    // --emit-lex
    scc_argparse_opt_t opt_lex;
    scc_argparse_opt_init(&opt_lex, 0, "emit-lex",
                          scc_hints[SCC_HINT_EMIT_LEX]);
    scc_argparse_spec_setup_bool(&opt_lex.spec, &(config->emit_lex));
    scc_argparse_cmd_add_opt(root, &opt_lex);

    // --emit-pp
    scc_argparse_opt_t opt_pp;
    scc_argparse_opt_init(&opt_pp, 0, "emit-pp", scc_hints[SCC_HINT_EMIT_PP]);
    scc_argparse_spec_setup_bool(&opt_pp.spec, &(config->emit_pp));
    scc_argparse_cmd_add_opt(root, &opt_pp);

    // -T, --emit-ast
    scc_argparse_opt_t opt_ast;
    scc_argparse_opt_init(&opt_ast, 'T', "emit-ast",
                          scc_hints[SCC_HINT_EMIT_AST]);
    scc_argparse_spec_setup_bool(&opt_ast.spec, &(config->emit_ast));
    scc_argparse_cmd_add_opt(root, &opt_ast);

    // -R, --emit-ir
    scc_argparse_opt_t opt_ir;
    scc_argparse_opt_init(&opt_ir, 'R', "emit-ir", scc_hints[SCC_HINT_EMIT_IR]);
    scc_argparse_spec_setup_bool(&opt_ir.spec, &(config->emit_ir));
    scc_argparse_cmd_add_opt(root, &opt_ir);
}

#endif /* __SCC_CONFIG_H___ */