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Big reorganisation to make it easier to port to different targets
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zik.saleeba
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Feb 24, 2009
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,87 +1,44 @@ | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
| #include <stdarg.h> | ||
| #include <sys/types.h> | ||
| #include <sys/stat.h> | ||
| #include <unistd.h> | ||
|
|
||
| #include "picoc.h" | ||
|
|
||
| /* all platform-dependent code is in this file */ | ||
|
|
||
| void ProgramFail(struct ParseState *Parser, const char *Message, ...) | ||
| { | ||
| va_list Args; | ||
|
|
||
| if (Parser != NULL) | ||
| IntrinsicHostPrintf("%s:%d: ", Parser->FileName, Parser->Line); | ||
|
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| va_start(Args, Message); | ||
| IntrinsicHostVPrintf(Message, Args); | ||
| IntrinsicHostPrintf("\n"); | ||
| exit(1); | ||
| } | ||
|
|
||
| /* exit with a message */ | ||
| void LexFail(struct LexState *Lexer, const char *Message, ...) | ||
| { | ||
| va_list Args; | ||
|
|
||
| IntrinsicHostPrintf("%s:%d: ", Lexer->FileName, Lexer->Line); | ||
| va_start(Args, Message); | ||
| IntrinsicHostVPrintf(Message, Args); | ||
| IntrinsicHostPrintf("\n"); | ||
| exit(1); | ||
| } | ||
|
|
||
| /* read a file into memory */ | ||
| char *ReadFile(const char *FileName) | ||
| { | ||
| struct stat FileInfo; | ||
| char *ReadText; | ||
| FILE *InFile; | ||
|
|
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| if (stat(FileName, &FileInfo)) | ||
| ProgramFail(NULL, "can't read file %s\n", FileName); | ||
|
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| ReadText = malloc(FileInfo.st_size + 1); | ||
| if (ReadText == NULL) | ||
| ProgramFail(NULL, "out of memory\n"); | ||
|
|
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| InFile = fopen(FileName, "r"); | ||
| if (InFile == NULL) | ||
| ProgramFail(NULL, "can't read file %s\n", FileName); | ||
|
|
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| if (fread(ReadText, 1, FileInfo.st_size, InFile) != FileInfo.st_size) | ||
| ProgramFail(NULL, "can't read file %s\n", FileName); | ||
|
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| ReadText[FileInfo.st_size] = '\0'; | ||
| fclose(InFile); | ||
|
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| return ReadText; | ||
| } | ||
|
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||
| /* read and scan a file for definitions */ | ||
| void ScanFile(const char *FileName) | ||
| /* initialise everything */ | ||
| void Initialise() | ||
| { | ||
| char *SourceStr = ReadFile(FileName); | ||
| Parse(FileName, SourceStr, strlen(SourceStr), TRUE); | ||
| free(SourceStr); | ||
| HeapInit(); | ||
| TableInit(); | ||
| VariableInit(); | ||
| LexInit(); | ||
| VariableInit(); | ||
| TypeInit(); | ||
| LibraryInit(&GlobalTable, "c library", &CLibrary); | ||
| LibraryInit(&GlobalTable, "platform library", &PlatformLibrary); | ||
| ParseInit(); | ||
| } | ||
|
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| /* platform-dependent code for running programs is in this file */ | ||
| #ifdef UNIX_HOST | ||
| int main(int argc, char **argv) | ||
| { | ||
| if (argc < 2) | ||
| ProgramFail(NULL, "Format: picoc <program.c> <args>...\n"); | ||
|
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| HeapInit(); | ||
| TableInit(); | ||
| VariableInit(); | ||
| LexInit(); | ||
| ParseInit(); | ||
|
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| ScanFile(argv[1]); | ||
| Initialise(); | ||
| PlatformScanFile(argv[1]); | ||
|
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| return 0; | ||
| } | ||
| #else | ||
| # ifdef SURVEYOR_HOST | ||
| static char *SourceStr = "\ | ||
| printf(\"This is a test program\n\");\ | ||
| for (Count = 1; Count <= 10; Count++)\ | ||
| printf(\"%d\n\");\ | ||
| "; | ||
|
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| int main(int argc, char **argv) | ||
| { | ||
| Initialise(); | ||
| Parse("test.c", SourceStr, strlen(SourceStr), TRUE); | ||
| return 0; | ||
| } | ||
| # endif | ||
| #endif |
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