add analyzer

2 files changed, 60 insertions, 0 deletions

diff --git a/src/as_analyzer.c b/src/as_analyzer.c
new file mode 100644
index 0000000..39616da
--- /dev/null
+++ b/src/as_analyzer.c
@@ -0,0 +1,48 @@
+#include "as_analyzer.h"
+
+#include <stddef.h>
+#include <string.h>
+
+struct symTableEntry {
+    const char * name;
+    size_t offset;
+};
+
+const char * composeSectionLabel(Allocator alct, const char * section, const char * name) {
+    size_t sectionLen = strlen(section);
+    size_t nameLen = strlen(name);
+    size_t sz = sectionLen + nameLen;
+    char * buf = allocate(alct, sz + 1);
+    memcpy(buf, section, sectionLen);
+    memcpy(buf + sectionLen, name, nameLen);
+    buf[sz] = '\0';
+    return buf;
+}
+
+void processSectionLabel(Allocator alct, Prog prog) {
+    const char * section = "";
+    Stmt* stmts = prog->stmts->stmts;
+    for (size_t i = 0; ; i++) {
+        if (stmts[i] == NULL) break;
+        if (stmts[i]->label == NULL) continue;
+        const char* name = stmts[i]->label->name;
+        if (name[0] == '.') {
+            stmts[i]->label->name = composeSectionLabel(alct, section, name);
+        } else {
+            section = name;
+            continue;
+        }
+    }
+}
+
+size_t instrSize(Instr instr) {
+    // TODO
+    return 0;
+}
+
+SymTableEntry* analyzeProg(Allocator alct, Prog prog) {
+    processSectionLabel(alct, prog);
+    // TODO
+    return NULL;
+}
+
diff --git a/src/as_analyzer.h b/src/as_analyzer.h
new file mode 100644
index 0000000..10cce38
--- /dev/null
+++ b/src/as_analyzer.h
@@ -0,0 +1,12 @@
+#ifndef FVM_AS_ANALYZER_H_
+#define FVM_AS_ANALYZER_H_
+
+#include "as_parser.h"
+#include "utils.h"
+
+struct symTableEntry;
+typedef struct symTableEntry * SymTableEntry;
+
+SymTableEntry * analyzeProg(Allocator alct, Prog prog);
+
+#endif // FVM_AS_ANALYZER_H_