rename src-self-hosted/ to src/

src/stage1/buffer.cpp

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2016 Andrew Kelley
+ *
+ * This file is part of zig, which is MIT licensed.
+ * See http://opensource.org/licenses/MIT
+ */
+
+#include "buffer.hpp"
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+Buf *buf_vprintf(const char *format, va_list ap) {
+    va_list ap2;
+    va_copy(ap2, ap);
+
+    int len1 = vsnprintf(nullptr, 0, format, ap);
+    assert(len1 >= 0);
+
+    size_t required_size = len1 + 1;
+
+    Buf *buf = buf_alloc_fixed(len1);
+
+    int len2 = vsnprintf(buf_ptr(buf), required_size, format, ap2);
+    assert(len2 == len1);
+
+    va_end(ap2);
+
+    return buf;
+}
+
+Buf *buf_sprintf(const char *format, ...) {
+    va_list ap;
+    va_start(ap, format);
+    Buf *result = buf_vprintf(format, ap);
+    va_end(ap);
+    return result;
+}
+
+void buf_appendf(Buf *buf, const char *format, ...) {
+    assert(buf->list.length);
+    va_list ap, ap2;
+    va_start(ap, format);
+    va_copy(ap2, ap);
+
+    int len1 = vsnprintf(nullptr, 0, format, ap);
+    assert(len1 >= 0);
+
+    size_t required_size = len1 + 1;
+
+    size_t orig_len = buf_len(buf);
+
+    buf_resize(buf, orig_len + len1);
+
+    int len2 = vsnprintf(buf_ptr(buf) + orig_len, required_size, format, ap2);
+    assert(len2 == len1);
+
+    va_end(ap2);
+    va_end(ap);
+}
+
+// these functions are not static inline so they can be better used as template parameters
+bool buf_eql_buf(Buf *buf, Buf *other) {
+    return buf_eql_mem(buf, buf_ptr(other), buf_len(other));
+}
+
+uint32_t buf_hash(Buf *buf) {
+    assert(buf->list.length);
+    size_t interval = buf->list.length / 256;
+    if (interval == 0)
+        interval = 1;
+    // FNV 32-bit hash
+    uint32_t h = 2166136261;
+    for (size_t i = 0; i < buf_len(buf); i += interval) {
+        h = h ^ ((uint8_t)buf->list.at(i));
+        h = h * 16777619;
+    }
+    return h;
+}