feat: implement some of escape sequences

2 files changed, 47 insertions, 7 deletions

diff --git a/main.c b/main.c
index ac5484d..b996615 100644
--- a/main.c
+++ b/main.c
@@ -319,13 +319,8 @@ void pp_tokenize_all(Preprocessor* pp) {
             }
         } else if (c == '\'') {
             start = pp->pos - 1;
-            ch = pp->src[pp->pos];
-            if (ch == '\\') {
+            if (pp->src[pp->pos] == '\\') {
                 ++pp->pos;
-                ch = pp->src[pp->pos];
-                if (ch == 'n') {
-                    ch = '\n';
-                }
             }
             pp->pos += 2;
             tok->kind = PpTokenKind_character_constant;
@@ -576,8 +571,20 @@ void tokenize_all(Lexer* l) {
             ch = pp_tok->raw.data[1];
             if (ch == '\\') {
                 ch = pp_tok->raw.data[2];
-                if (ch == 'n') {
+                if (ch == 'a') {
+                    ch = '\a';
+                } else if (ch == 'b') {
+                    ch = '\b';
+                } else if (ch == 'f') {
+                    ch = '\f';
+                } else if (ch == 'n') {
                     ch = '\n';
+                } else if (ch == 'r') {
+                    ch = '\r';
+                } else if (ch == 't') {
+                    ch = '\t';
+                } else if (ch == 'v') {
+                    ch = '\v';
                 }
             }
             buf = calloc(4, sizeof(char));
diff --git a/tests/053.sh b/tests/053.sh
new file mode 100644
index 0000000..c4350b8
--- /dev/null
+++ b/tests/053.sh
@@ -0,0 +1,33 @@
+set -e
+
+cat <<'EOF' > expected
+39
+34
+63
+92
+7
+8
+12
+10
+13
+9
+11
+EOF
+bash ../../test_diff.sh <<'EOF'
+int printf();
+
+int main() {
+    printf("%d\n", '\'');
+    printf("%d\n", '\"');
+    printf("%d\n", '\?');
+    printf("%d\n", '\\');
+    printf("%d\n", '\a');
+    printf("%d\n", '\b');
+    printf("%d\n", '\f');
+    printf("%d\n", '\n');
+    printf("%d\n", '\r');
+    printf("%d\n", '\t');
+    printf("%d\n", '\v');
+    return 0;
+}
+EOF