src/as_analyzer.c


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#include "as_analyzer.h"

#include <stddef.h>
#include <string.h>

struct sym_table_entry {
    const char * name;
    size_t offset;
};

const char * compose_section_label(allocator_t alct, const char * section, const char * name) {
    size_t section_len = strlen(section);
    size_t name_len = strlen(name);
    size_t sz = section_len + name_len;
    char * buf = allocate(alct, sz + 1);
    memcpy(buf, section, section_len);
    memcpy(buf + section_len, name, name_len);
    buf[sz] = '\0';
    return buf;
}

void process_section_label(allocator_t alct, prog_t prog) {
    const char * section = "";
    stmt_t* 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 = compose_section_label(alct, section, name);
        } else {
            section = name;
            continue;
        }
    }
}

size_t instr_size(instr_t instr) {
    // TODO
    return 0;
}

struct sym_table analyze_prog(allocator_t alct, prog_t prog) {
    process_section_label(alct, prog);
    stmt_t * stmts = prog->stmts->stmts;
    for (int i = 0; ; i++) {
        if (stmts[i] == NULL) break;
    }
    struct sym_table tbl;
    // TODO
    return tbl;
}