From dee72dfcc0124be81e338a1d85948b8f1250085d Mon Sep 17 00:00:00 2001
From: c+1
Date: Mon, 2 Oct 2023 13:13:23 -0400
Subject: emalloc(), ecalloc(), erealloc()

---
 src/include/lexer.h |  3 ++-
 src/include/token.h |  2 +-
 src/include/util.h  |  8 ++++++--
 src/lexer.c         | 40 +++++++++++++++++-----------------------
 src/main.c          |  2 ++
 src/util.c          | 24 ++++++++++++++++++++++++
 6 files changed, 52 insertions(+), 27 deletions(-)

diff --git a/src/include/lexer.h b/src/include/lexer.h
index 28d0e6f..8d4f75f 100644
--- a/src/include/lexer.h
+++ b/src/include/lexer.h
@@ -1,11 +1,12 @@
 #ifndef LEXER_H
 #define LEXER_H
 
+#include "util.h"
+#include "syntax.h"
 #include "token.h"
 
 #define LEXER_VALID (lexer->c != '\0' && lexer->i < strlen(lexer->content))
 
-
 /* the lexer struct */
 typedef struct LEXER_STRUC {
    /* current character in content */
diff --git a/src/include/token.h b/src/include/token.h
index d3dda67..1a307cd 100644
--- a/src/include/token.h
+++ b/src/include/token.h
@@ -13,7 +13,7 @@
 typedef struct TOKEN_STRUC {
    enum TOKEN_ENUM {
       TOKEN_KEYWORD,             // keyword
-      TOKEN_PRIM_STR,            // 'string'
+      TOKEN_PRIM_STR,            // "string"
       TOKEN_PRIM_INT,            // 42
       TOKEN_COMM,                // `comment`
       TOKEN_STMNT_END,           // ;
diff --git a/src/include/util.h b/src/include/util.h
index a2f887b..712af43 100644
--- a/src/include/util.h
+++ b/src/include/util.h
@@ -18,7 +18,11 @@ void log_raw(const char*, ...);
 /* log a warning */
 void log_war(const char*, ...);
 
-/* does c appear in s? */
-int appears_in_str(char*, char*);
+/* if calloc() returns null, die */
+void* ecalloc(size_t, size_t);
+/* if malloc() returns null, die */
+void* emalloc(size_t);
+/* if realloc() returns null, die */
+void* erealloc(void*, size_t);
 
 #endif
diff --git a/src/lexer.c b/src/lexer.c
index 7a6aed5..8374a90 100644
--- a/src/lexer.c
+++ b/src/lexer.c
@@ -3,10 +3,8 @@
 #include <ctype.h>
 #include <stdio.h>
 
-#include "include/util.h"
 #include "include/lexer.h" 
 
-
 lexer_t* lexer_init(char* content) {
    lexer_t* lexer = calloc(1, sizeof(struct LEXER_STRUC));
 
@@ -23,7 +21,7 @@ void lexer_destroy(lexer_t* lexer) {
 
 void lexer_next(lexer_t* lexer) {
    if (LEXER_VALID) {
-      lexer->i += 1;
+      lexer->i ++;
       lexer->c = lexer->content[lexer->i]; 
    }
 }
@@ -42,56 +40,52 @@ token_t* lexer_get_next_token(lexer_t* lexer) {
       if (char_could_start_keyword(&lexer->c))  { return lexer_collect(lexer, token_char_kywrd, 0, 0, TOKEN_KEYWORD); }
 
       switch (lexer->c) {
-         case '\'':
+         case SYNTAX_STR_DELIM:
             return lexer_collect(lexer, token_char_quote, 1, 1, TOKEN_PRIM_STR);
             break;
-         case '`': 
-            return lexer_collect(lexer, token_char_grave, 1, 1, TOKEN_COMM);
-            break;
-         case ';':
+         case SYNTAX_EXPR_END: 
             return lexer_next_token(lexer, TOKEN_STMNT_END);
             break;
-         case '=':
+         case SYNTAX_SET:
             return lexer_next_token(lexer, TOKEN_DEF_SET); 
             break;
-         case '(': 
+         case SYNTAX_LGROUP: 
             return lexer_next_token(lexer, TOKEN_LGROUP); 
             break;
-         case ')': 
+         case SYNTAX_RGROUP: 
             return lexer_next_token(lexer, TOKEN_RGROUP); 
             break;
-         case '#':
-            return lexer_collect(lexer, token_char_pound, 1, 1, TOKEN_DIRECTIVE);
-            break;
-         case '.': 
+         case SYNTAX_APPLY: 
             return lexer_next_token(lexer, TOKEN_FN_APPLY); 
             break;
-         case ',': 
+         case SYNTAX_LIST_DELIM: 
             return lexer_next_token(lexer, TOKEN_LIST_DELIM); 
             break;
-         case ':':
+         case SYNTAX_TAG_DELIM:
             return lexer_collect(lexer, token_char_kywrd, 1, 0, TOKEN_DEF_TAG);
             break;
-         case '/': 
+         case SYNTAX_NAMESPACE_DELIM: 
             return lexer_next_token(lexer, TOKEN_NAMESPACE_DELIM); 
             break;
-         case '{': 
+         case SYNTAX_LBLOCK: 
             return lexer_next_token(lexer, TOKEN_BLOCK_START); 
             break;
-         case '}': 
+         case SYNTAX_RBLOCK: 
             return lexer_next_token(lexer, TOKEN_BLOCK_END); 
             break;
-         case '[':
+         case SYNTAX_LLIST:
             return lexer_next_token(lexer, TOKEN_ARRAY_START);
             break;
-         case ']':
+         case SYNTAX_RLIST:
             return lexer_next_token(lexer, TOKEN_ARRAY_END);
             break;
          case '\0': 
+         case EOF:
             return token_init(TOKEN_EOF, lexer_get_c_as_string(lexer)); 
             break;
          default:
-            return token_init(TOKEN_UNKNOWN, lexer_get_c_as_string(lexer));
+            return lexer_next_token(lexer, TOKEN_UNKNOWN);
+            break;
       }
    }
 
diff --git a/src/main.c b/src/main.c
index ebd0d77..c084002 100644
--- a/src/main.c
+++ b/src/main.c
@@ -31,6 +31,7 @@ int main(int argc, char* argv[]) {
    log_inf("preprocessor ran");
    log_inf("preprocessed source: %s", source);
 
+   /*
    lexer = lexer_init(source);
    HLKT_ASS(lexer);
    log_inf("lexer created");
@@ -38,6 +39,7 @@ int main(int argc, char* argv[]) {
    lexer_run(lexer);
 
    lexer_destroy(lexer);
+   */
    free(source);
    /*free(pp->psrc);*/
 
diff --git a/src/util.c b/src/util.c
index 943a597..cee2beb 100644
--- a/src/util.c
+++ b/src/util.c
@@ -58,3 +58,27 @@ void log_war(const char* fmt, ...) {
 
    fprintf(stderr, "\n");
 }
+
+void* ecalloc(size_t nmemb, size_t size) {
+   void* p;
+
+   if (! (p = calloc(nmemb, size))) { die("failed to calloc:"); }
+
+   return p;
+}
+
+void* emalloc(size_t size) {
+   void* p;
+
+   if (! (p = malloc(size))) { die("failed to malloc:"); }
+
+   return p;
+}
+
+void* erealloc(void* dest, size_t size) {
+   void* p;
+
+   if (! (p = realloc(dest, size))) { die("failed to realloc:"); }
+
+   return p;
+}
-- 
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