From: ahmedsamyh <ahmedsamyh10@gmail.com>
Date: Wed, 26 Feb 2025 17:27:27 +0000 (+0500)
Subject: [main.c] Use String_view for Lexer.src.
X-Git-Url: https://www.git.momoyon.org/?a=commitdiff_plain;h=ee6643405351e236c5b203db9f9e08018d50c705;p=lang.git

[main.c] Use String_view for Lexer.src.
---

diff --git a/include/commonlib.h b/include/commonlib.h
index b147ffb..7af1d7b 100644
--- a/include/commonlib.h
+++ b/include/commonlib.h
@@ -46,6 +46,38 @@
 
 #define shift_args c_shift_args
 
+#define SV_FMT c_SV_FMT
+#define SV_ARG c_SV_ARG
+
+#define SV c_SV
+
+#define sv_print_dumb c_sv_print_dumb
+#define sv_from_cstr c_sv_from_cstr
+#define sv_lpop c_sv_lpop
+#define sv_lpop_until_predicate c_sv_lpop_until_predicate
+#define sv_rpop_until_predicate c_sv_rpop_until_predicate
+#define sv_lpop_until_char c_sv_lpop_until_char
+#define sv_rpop_until_char c_sv_rpop_until_char
+#define sv_lremove c_sv_lremove
+#define sv_rremove c_sv_rremove
+#define sv_lremove_until_char c_sv_lremove_until_char
+#define sv_rremove_until_char c_sv_rremove_until_char
+#define sv_lremove_until_char_after c_sv_lremove_until_char_after
+#define sv_rremove_until_char_after c_sv_rremove_until_char_after
+#define sv_ltrim c_sv_ltrim
+#define sv_rtrim c_sv_rtrim
+#define sv_trim c_sv_trim
+#define sv_to_cstr c_sv_to_cstr
+#define sv_to_int c_sv_to_int
+#define sv_to_uint64 c_sv_to_uint64
+#define sv_to_uint8_hex c_sv_to_uint8_hex
+#define sv_to_ptr c_sv_to_ptr
+#define sv_to_float c_sv_to_float
+#define sv_contains_char c_sv_contains_char
+#define sv_is_hex_numbers c_sv_is_hex_numbers
+#define sv_equals c_sv_equals
+
+
 #endif // COMMONLIB_REMOVE_PREFIX
 
 // typedefs
diff --git a/main.c b/main.c
index 6de8c60..eecc433 100644
--- a/main.c
+++ b/main.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <ctype.h>
 
 #define COMMONLIB_IMPLEMENTATION
 #define COMMONLIB_REMOVE_PREFIX
@@ -12,8 +13,19 @@ void usage(const char *program) {
 }
 
 typedef struct {
-    const char *src;
-    size_t      src_len;
+    const char *filename;
+    int line;
+    int col;
+} Location;
+
+void print_loc(FILE *f, Location *loc) {
+    ASSERT(loc != NULL, "Bro you passed a NULL...");
+    fprintf(f, "%s:%d:%d", loc->filename, loc->line, loc->col);
+}
+
+typedef struct {
+    // NOTE: src gets data from a heap allocated string!!!
+    String_view src;
     size_t cur;
     size_t bol; // Beginning of Line
     size_t line;
@@ -38,8 +50,7 @@ Lexer make_lexer(const char *filename) {
         exit(1);
     }
     Lexer l = {
-        .src = buf,
-        .src_len = strlen(buf),
+        .src = sv_from_cstr(buf),
         .cur = 0,
         .bol = 0,
         .line = 1,
@@ -50,12 +61,12 @@ Lexer make_lexer(const char *filename) {
 }
 
 bool eof(Lexer *l) {
-    return l->cur >= l->src_len;
+    return l->cur >= l->src.count;
 }
 
 char current_char(Lexer *l) {
     ASSERT(!eof(l), "Trying to get char after EOF");
-    return l->src[l->cur];
+    return l->src.data[l->cur];
 }
 
 char consume_char(Lexer *l) {
@@ -64,6 +75,11 @@ char consume_char(Lexer *l) {
     return ch;
 }
 
+void consume_ident(Lexer *l, String_view *ident_sv_out, Location *loc_out) {
+    // Identifiers can start with [a-z][A-Z]_ and contain [0-9] after the first char
+    ASSERT(isalpha(current_char(l)) || current_char(l) == '_', "Called consume_identifier() at the wrong character!");
+}
+
 void left_trim(Lexer *l) {
     while (!eof(l) && isspace(current_char(l))) {
         // TODO: Care about window's \r\n....
@@ -76,13 +92,26 @@ void left_trim(Lexer *l) {
 }
 
 bool next_token(Lexer *l, Token *t_out) {
+    (void)t_out;
     left_trim(l);
 
     if (eof(l)) return false;
 
     char ch = current_char(l);
 
+    if (isalpha(ch) || ch == '_') {
+        String_view ident_sv = {0};
+        Location ident_loc = {0};
+        consume_ident(l, &ident_sv, &ident_loc);
+    }
+
     switch (ch) {
+        case '"': {
+        } break;
+        default: {
+            error("Unhandled char '%c'", ch);
+            ASSERT(false, "UNREACHABLE!");
+        }
     }
 
     /*info("ch: '%c'", ch);*/