ac0e95eb60
Now return an error code and an error message, rather than just printing to stderr or calling exit(). Check to see we don't exceed our code size.
110 lines
2.7 KiB
C++
110 lines
2.7 KiB
C++
/*
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* Android "Almost" C Compiler.
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* This is a compiler for a small subset of the C language, intended for use
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* in scripting environments where speed and memory footprint are important.
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*
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* This code is based upon the "unobfuscated" version of the
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* Obfuscated Tiny C compiler, see the file LICENSE for details.
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*
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*/
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#include <ctype.h>
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#include <dlfcn.h>
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#if defined(__arm__)
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#include <unistd.h>
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#endif
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#include <acc/acc.h>
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typedef int (*MainPtr)(int, char**);
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// This is a separate function so it can easily be set by breakpoint in gdb.
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int run(MainPtr mainFunc, int argc, char** argv) {
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return mainFunc(argc, argv);
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}
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int main(int argc, char** argv) {
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const char* inFile = NULL;
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bool printListing;
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FILE* in = stdin;
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int i;
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for (i = 1; i < argc; i++) {
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char* arg = argv[i];
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if (arg[0] == '-') {
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switch (arg[1]) {
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case 'S':
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printListing = true;
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break;
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default:
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fprintf(stderr, "Unrecognized flag %s\n", arg);
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return 3;
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}
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} else if (inFile == NULL) {
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inFile = arg;
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} else {
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break;
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}
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}
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if (! inFile) {
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fprintf(stderr, "input file required\n");
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return 2;
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}
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if (inFile) {
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in = fopen(inFile, "r");
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if (!in) {
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fprintf(stderr, "Could not open input file %s\n", inFile);
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return 1;
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}
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}
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fseek(in, 0, SEEK_END);
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size_t fileSize = (size_t) ftell(in);
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rewind(in);
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ACCchar* text = new ACCchar[fileSize];
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size_t bytesRead = fread(text, 1, fileSize, in);
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if (bytesRead != fileSize) {
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fprintf(stderr, "Could not read all of file %s\n", inFile);
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}
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ACCscript* script = accCreateScript();
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const ACCchar* scriptSource[] = {text};
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accScriptSource(script, 1, scriptSource, NULL);
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delete[] text;
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accCompileScript(script);
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int result = accGetError(script);
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MainPtr mainPointer = 0;
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if (result != 0) {
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char buf[1024];
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accGetScriptInfoLog(script, sizeof(buf), NULL, buf);
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fprintf(stderr, "%ss", buf);
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goto exit;
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}
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accGetScriptLabel(script, "main", (ACCvoid**) & mainPointer);
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result = accGetError(script);
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if (result == ACC_NO_ERROR) {
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fprintf(stderr, "Executing compiled code:\n");
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int codeArgc = argc - i + 1;
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char** codeArgv = argv + i - 1;
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codeArgv[0] = (char*) (inFile ? inFile : "stdin");
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result = run(mainPointer, codeArgc, codeArgv);
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fprintf(stderr, "result: %d\n", result);
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}
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exit:
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accDeleteScript(script);
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return result;
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}
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