meta: add ivy-diag library

ivy-diag is used for generating and emitting diagnostic messages during compilation.

diag/diag.c

@@ -0,0 +1,96 @@
+#include "diag.h"
+
+#include "ctx.h"
+
+#include <assert.h>
+#include <blue/object/string.h>
+#include <ivy/diag.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct diag_c_msg *diag_msg_create(const struct ivy_diag_msg *content)
+{
+	struct diag_c_msg *out = malloc(sizeof *out);
+	if (!out) {
+		return NULL;
+	}
+
+	memset(out, 0x0, sizeof *out);
+
+	out->msg_base.c_type = DIAG_COMPONENT_MSG;
+	out->msg_content = b_strdup(content->msg_content);
+
+	return out;
+}
+
+struct diag_c_snippet *diag_snippet_create(
+	unsigned long first_line, unsigned long last_line,
+	const struct ivy_diag_amendment *amendments, size_t nr_amendments,
+	const struct ivy_diag_highlight *highlights, size_t nr_highlights)
+{
+	struct diag_c_snippet *out = malloc(sizeof *out);
+	if (!out) {
+		return NULL;
+	}
+
+	memset(out, 0x0, sizeof *out);
+
+	out->s_base.c_type = DIAG_COMPONENT_SNIPPET;
+	out->s_first_line = first_line;
+	out->s_last_line = last_line;
+
+	out->s_nr_amendments = nr_amendments;
+	out->s_amendments = calloc(nr_amendments, sizeof *amendments);
+	if (!out->s_amendments) {
+		free(out);
+		return NULL;
+	}
+	memcpy(out->s_amendments, amendments, nr_amendments * sizeof *amendments);
+
+	out->s_nr_highlights = nr_highlights;
+	out->s_highlights = calloc(nr_highlights, sizeof *highlights);
+	if (!out->s_highlights) {
+		free(out->s_amendments);
+		free(out);
+		return NULL;
+	}
+	memcpy(out->s_highlights, highlights, nr_highlights * sizeof *highlights);
+
+	return out;
+}
+
+void ivy_diag_set_location(
+	struct ivy_diag *diag, unsigned long row, unsigned long col)
+{
+	diag->diag_row = row;
+	diag->diag_col = col;
+}
+
+void ivy_diag_push_msg(struct ivy_diag *diag, unsigned long msg, ...)
+{
+	const struct ivy_diag_msg *msg_info
+		= diag_ctx_get_msg(diag->diag_parent, msg);
+	assert(msg_info);
+
+	struct diag_c_msg *c_msg = diag_msg_create(msg_info);
+	if (!c_msg) {
+		return;
+	}
+
+	b_queue_push_back(&diag->diag_components, &c_msg->msg_base.c_entry);
+}
+
+void ivy_diag_push_snippet(
+	struct ivy_diag *diag, unsigned long first_line, unsigned long last_line,
+	const struct ivy_diag_amendment *amendments, size_t nr_amendments,
+	const struct ivy_diag_highlight *highlights, size_t nr_highlights)
+{
+	struct diag_c_snippet *c_snippet = diag_snippet_create(
+		first_line, last_line, amendments, nr_amendments, highlights,
+		nr_highlights);
+	if (!c_snippet) {
+		return;
+	}
+
+	b_queue_push_back(&diag->diag_components, &c_snippet->s_base.c_entry);
+}