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August 8, 2024 02:23
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c compiler driver
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| #include <stdio.h> | |
| #include <string.h> | |
| #include "common.h" | |
| #include "options.h" | |
| #include "utils.h" | |
| #include "lexer.h" | |
| #include "parser.h" | |
| #include "ast.h" | |
| Lexer *lexer = NULL; | |
| Token *tokens = NULL; | |
| usize tokens_len = 0; | |
| Parser *parser = NULL; | |
| AST *global_ast = NULL; | |
| usize asts_len = 0; | |
| #ifndef NDEBUG | |
| void lexer_log() { | |
| if (lexer == NULL) { | |
| fprintf(stderr, "The lexer hasn't been properly initialized\n"); | |
| exit(1); | |
| } | |
| printf("LEXER DEBUG\n"); | |
| printf("-----------\n"); | |
| printf("Token list: \n"); | |
| for (int i = 0; i < tokens_len; i++) { | |
| Token token = tokens[i]; | |
| print_token(&token); | |
| if (token.type == TOKEN_ERROR || token.type == TOKEN_EOF) { | |
| break; | |
| } | |
| } | |
| } | |
| void parser_log() { | |
| printf("PARSER DEBUG\n"); | |
| printf("------------\n"); | |
| printf("Program(\n"); | |
| for (int i = 0; i < asts_len; i++) { | |
| AST ast = global_ast[i]; | |
| printf("\t"); | |
| ast_print(&ast); | |
| printf("\n"); | |
| } | |
| printf("\n)"); | |
| } | |
| #endif | |
| int main(int argc, char **argv) { | |
| if (argc == 1) { | |
| printf("higancc: fatal error: no input files\n"); | |
| printf("compilation terminated\n"); | |
| return 1; | |
| } | |
| Options opts = Options_parse(argc, argv); | |
| const char *buffer = read_file(argv[argc-1]); | |
| lexer = Lexer_init(buffer); | |
| tokens = Lexer_scanTokens(lexer, &tokens_len); | |
| parser = Parser_init(tokens); | |
| global_ast = Parser_parse(parser, &asts_len); | |
| for (int i = 0; i < tokens_len; i++) { | |
| Token token = tokens[i]; | |
| if (token.type == TOKEN_ERROR) { | |
| fprintf(stderr, "[LEXER ERROR - line %d] %.*s\n", token.line, token.length, token.start); | |
| exit(1); | |
| } | |
| } | |
| if (opts.lexer) { | |
| lexer_log(); | |
| } | |
| if (opts.parser) { | |
| parser_log(); | |
| } | |
| if (opts.emit_assembly) { | |
| printf("Here's the Assembly: \n"); | |
| } | |
| if (opts.output_file) { | |
| printf("Compile to '%s'\n", opts.output_file); | |
| } | |
| Lexer_free(lexer); | |
| return 0; | |
| } |
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