Module: Onigmo

Defined in:
lib/onigmo.rb,
lib/onigmo/node.rb,
lib/onigmo/visitor.rb,
lib/onigmo/json_visitor.rb,
lib/onigmo/deconstruct_visitor.rb,
lib/onigmo/pretty_print_visitor.rb,
ext/onigmo/onigmo.c

Defined Under Namespace

Classes: AlternationNode, AnchorBufferBeginNode, AnchorBufferEndNode, AnchorKeepNode, AnchorLineBeginNode, AnchorLineEndNode, AnchorPositionBeginNode, AnchorSemiEndNode, AnchorWordBoundaryInvertNode, AnchorWordBoundaryNode, AnyNode, BackrefNode, CClassInvertNode, CClassNode, CallNode, DeconstructVisitor, EncloseAbsentNode, EncloseConditionNode, EncloseMemoryNode, EncloseOptionsNode, EncloseStopBacktrackNode, JSONVisitor, ListNode, LookAheadInvertNode, LookAheadNode, LookBehindInvertNode, LookBehindNode, Node, PrettyPrintVisitor, QuantifierNode, StringNode, Visitor, WordInvertNode, WordNode

Class Method Summary collapse

Class Method Details

.compile(string) ⇒ Object 



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# File 'ext/onigmo/onigmo.c', line 399

static VALUE
compile(VALUE self, VALUE string) {
    const OnigUChar *pattern = (const OnigUChar *) StringValueCStr(string);

    regex_t *regex;
    OnigErrorInfo einfo;

    OnigEncoding encoding = rb_enc_get(string);
    int result = onig_new(&regex, pattern, pattern + strlen((const char *) pattern), ONIG_OPTION_DEFAULT, encoding, ONIG_SYNTAX_DEFAULT, &einfo);

    if (result != ONIG_NORMAL) {
        fail(result, regex, &einfo);
        return Qnil;
    }

    VALUE insns = rb_ary_new();
    const unsigned char *cursor = regex->p;
    const unsigned char *end = cursor + regex->used;
    LengthType length;

    while (cursor < end) {
        VALUE insn = rb_ary_new();

        switch (*cursor++) {
            case OP_FINISH: {
                rb_ary_push(insn, ID2SYM(rb_intern("finish")));
                break;
            }
            case OP_END: {
                rb_ary_push(insn, ID2SYM(rb_intern("end")));
                break;
            }
            case OP_EXACT1: {
                rb_ary_push(insn, ID2SYM(rb_intern("exact1")));
                rb_ary_push(insn, read_exact(&cursor, 1, encoding));
                break;
            }
            case OP_EXACT2: {
                rb_ary_push(insn, ID2SYM(rb_intern("exact2")));
                rb_ary_push(insn, read_exact(&cursor, 2, encoding));
                break;
            }
            case OP_EXACT3: {
                rb_ary_push(insn, ID2SYM(rb_intern("exact3")));
                rb_ary_push(insn, read_exact(&cursor, 3, encoding));
                break;
            }
            case OP_EXACT4: {
                rb_ary_push(insn, ID2SYM(rb_intern("exact4")));
                rb_ary_push(insn, read_exact(&cursor, 4, encoding));
                break;
            }
            case OP_EXACT5: {
                rb_ary_push(insn, ID2SYM(rb_intern("exact5")));
                rb_ary_push(insn, read_exact(&cursor, 5, encoding));
                break;
            }
            case OP_EXACTN: {
                rb_ary_push(insn, ID2SYM(rb_intern("exactn")));
                rb_ary_push(insn, read_length(&cursor));
                break;
            }
            case OP_EXACTMB2N1: {
                rb_ary_push(insn, ID2SYM(rb_intern("exactmb2n1")));
                rb_ary_push(insn, read_exact(&cursor, 2, encoding));
                break;
            }
            case OP_EXACTMB2N2: {
                rb_ary_push(insn, ID2SYM(rb_intern("exactmb2n2")));
                rb_ary_push(insn, read_exact(&cursor, 4, encoding));
                break;
            }
            case OP_EXACTMB2N3: {
                rb_ary_push(insn, ID2SYM(rb_intern("exactmb2n3")));
                rb_ary_push(insn, read_exact(&cursor, 6, encoding));
                break;
            }
            case OP_EXACTMB2N: {
                rb_ary_push(insn, ID2SYM(rb_intern("exactmb2n")));

                VALUE length = read_length(&cursor);
                rb_ary_push(insn, length);

                rb_ary_push(insn, read_exact(&cursor, NUM2INT(length) * 2, encoding));
                break;
            }
            case OP_EXACTMB3N: {
                rb_ary_push(insn, ID2SYM(rb_intern("exactmb3n")));

                VALUE length = read_length(&cursor);
                rb_ary_push(insn, length);

                rb_ary_push(insn, read_exact(&cursor, NUM2INT(length) * 3, encoding));
                break;
            }
            case OP_EXACTMBN: {
                rb_ary_push(insn, ID2SYM(rb_intern("exactmbn")));

                VALUE length = read_length(&cursor);
                rb_ary_push(insn, length);

                rb_ary_push(insn, read_exact(&cursor, NUM2INT(length) * 2, encoding));
                break;
            }
            case OP_EXACT1_IC: {
                rb_ary_push(insn, ID2SYM(rb_intern("exact1_ic")));
                length = enclen(encoding, cursor, end);
                rb_ary_push(insn, read_exact(&cursor, length, encoding));
                break;
            }
            case OP_EXACTN_IC: {
                rb_ary_push(insn, ID2SYM(rb_intern("exactn_ic")));
                length = enclen(encoding, cursor, end);
                rb_ary_push(insn, read_exact(&cursor, length, encoding));
                break;
            }
            case OP_CCLASS: {
                rb_ary_push(insn, ID2SYM(rb_intern("cclass")));
                rb_ary_push(insn, read_bitset(&cursor, encoding));
                break;
            }
            case OP_CCLASS_MB: {
                rb_ary_push(insn, ID2SYM(rb_intern("cclass_mb")));

                VALUE length = read_length(&cursor);
                rb_ary_push(insn, length);
                rb_ary_push(insn, read_codepoint(&cursor, NUM2INT(length)));

                break;
            }
            case OP_CCLASS_MB_NOT: {
                rb_ary_push(insn, ID2SYM(rb_intern("cclass_mb_not")));

                VALUE length = read_length(&cursor);
                rb_ary_push(insn, length);
                rb_ary_push(insn, read_codepoint(&cursor, NUM2INT(length)));

                break;
            }
            case OP_CCLASS_NOT: {
                rb_ary_push(insn, ID2SYM(rb_intern("cclass_not")));
                rb_ary_push(insn, read_bitset(&cursor, encoding));
                break;
            }
            case OP_CCLASS_MIX: {
                rb_ary_push(insn, ID2SYM(rb_intern("cclass_mix")));
                rb_ary_push(insn, read_bitset(&cursor, encoding));

                VALUE length = read_length(&cursor);
                rb_ary_push(insn, length);
                rb_ary_push(insn, read_codepoint(&cursor, NUM2INT(length)));

                break;
            }
            case OP_CCLASS_MIX_NOT: {
                rb_ary_push(insn, ID2SYM(rb_intern("cclass_mix_not")));
                rb_ary_push(insn, read_bitset(&cursor, encoding));

                VALUE length = read_length(&cursor);
                rb_ary_push(insn, length);
                rb_ary_push(insn, read_codepoint(&cursor, NUM2INT(length)));

                break;
            }
            case OP_ANYCHAR: {
                rb_ary_push(insn, ID2SYM(rb_intern("anychar")));
                break;
            }
            case OP_ANYCHAR_ML: {
                rb_ary_push(insn, ID2SYM(rb_intern("anychar_ml")));
                break;
            }
            case OP_ANYCHAR_STAR: {
                rb_ary_push(insn, ID2SYM(rb_intern("anychar_star")));
                break;
            }
            case OP_ANYCHAR_ML_STAR: {
                rb_ary_push(insn, ID2SYM(rb_intern("anychar_ml_star")));
                break;
            }
            case OP_ANYCHAR_STAR_PEEK_NEXT: {
                rb_ary_push(insn, ID2SYM(rb_intern("anychar_star_peek_next")));
                rb_ary_push(insn, read_exact(&cursor, 1, encoding));
                break;
            }
            case OP_ANYCHAR_ML_STAR_PEEK_NEXT: {
                rb_ary_push(insn, ID2SYM(rb_intern("anychar_ml_star_peek_next")));
                rb_ary_push(insn, read_exact(&cursor, 1, encoding));
                break;
            }
            case OP_WORD: {
                rb_ary_push(insn, ID2SYM(rb_intern("word")));
                break;
            }
            case OP_NOT_WORD: {
                rb_ary_push(insn, ID2SYM(rb_intern("not_word")));
                break;
            }
            case OP_WORD_BOUND: {
                rb_ary_push(insn, ID2SYM(rb_intern("word_bound")));
                break;
            }
            case OP_NOT_WORD_BOUND: {
                rb_ary_push(insn, ID2SYM(rb_intern("not_word_bound")));
                break;
            }
            case OP_WORD_BEGIN: {
                rb_ary_push(insn, ID2SYM(rb_intern("word_begin")));
                break;
            }
            case OP_WORD_END: {
                rb_ary_push(insn, ID2SYM(rb_intern("word_end")));
                break;
            }
            case OP_ASCII_WORD: {
                rb_ary_push(insn, ID2SYM(rb_intern("ascii_word")));
                break;
            }
            case OP_NOT_ASCII_WORD: {
                rb_ary_push(insn, ID2SYM(rb_intern("not_ascii_word")));
                break;
            }
            case OP_ASCII_WORD_BOUND: {
                rb_ary_push(insn, ID2SYM(rb_intern("ascii_word_bound")));
                break;
            }
            case OP_NOT_ASCII_WORD_BOUND: {
                rb_ary_push(insn, ID2SYM(rb_intern("not_ascii_word_bound")));
                break;
            }
            case OP_ASCII_WORD_BEGIN: {
                rb_ary_push(insn, ID2SYM(rb_intern("ascii_word_begin")));
                break;
            }
            case OP_ASCII_WORD_END: {
                rb_ary_push(insn, ID2SYM(rb_intern("ascii_word_end")));
                break;
            }
            case OP_BEGIN_BUF: {
                rb_ary_push(insn, ID2SYM(rb_intern("begin_buf")));
                break;
            }
            case OP_END_BUF: {
                rb_ary_push(insn, ID2SYM(rb_intern("end_buf")));
                break;
            }
            case OP_BEGIN_LINE: {
                rb_ary_push(insn, ID2SYM(rb_intern("begin_line")));
                break;
            }
            case OP_END_LINE: {
                rb_ary_push(insn, ID2SYM(rb_intern("end_line")));
                break;
            }
            case OP_SEMI_END_BUF: {
                rb_ary_push(insn, ID2SYM(rb_intern("semi_end_buf")));
                break;
            }
            case OP_BEGIN_POSITION: {
                rb_ary_push(insn, ID2SYM(rb_intern("begin_position")));
                break;
            }
            case OP_BACKREF1: {
                rb_ary_push(insn, ID2SYM(rb_intern("backref1")));
                break;
            }
            case OP_BACKREF2: {
                rb_ary_push(insn, ID2SYM(rb_intern("backref2")));
                break;
            }
            case OP_BACKREFN: {
                rb_ary_push(insn, ID2SYM(rb_intern("backrefn")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;
            }
            case OP_BACKREFN_IC: {
                rb_ary_push(insn, ID2SYM(rb_intern("backrefn_ic")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;
            }
            case OP_BACKREF_MULTI: {
                rb_ary_push(insn, ID2SYM(rb_intern("backref_multi")));

                VALUE length = read_length(&cursor);
                rb_ary_push(insn, length);

                for (int i = 0; i < NUM2INT(length); i++) {
                    rb_ary_push(insn, read_memnum(&cursor));
                }

                break;
            }
            case OP_BACKREF_MULTI_IC: {
                rb_ary_push(insn, ID2SYM(rb_intern("backref_multi_ic")));

                VALUE length = read_length(&cursor);
                rb_ary_push(insn, length);

                for (int i = 0; i < NUM2INT(length); i++) {
                    rb_ary_push(insn, read_memnum(&cursor));
                }

                break;
            }
            case OP_BACKREF_WITH_LEVEL: {
                rb_ary_push(insn, ID2SYM(rb_intern("backref_with_level")));

                rb_ary_push(insn, read_option(&cursor));
                rb_ary_push(insn, read_length(&cursor));

                VALUE length = read_length(&cursor);
                rb_ary_push(insn, length);

                for (int i = 0; i < NUM2INT(length); i++) {
                    rb_ary_push(insn, read_memnum(&cursor));
                }

                break;
            }
            case OP_MEMORY_START:
                rb_ary_push(insn, ID2SYM(rb_intern("memory_start")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;

            case OP_MEMORY_START_PUSH:
                rb_ary_push(insn, ID2SYM(rb_intern("memory_start_push")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;

            case OP_MEMORY_END_PUSH:
                rb_ary_push(insn, ID2SYM(rb_intern("memory_end_push")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;

            case OP_MEMORY_END_PUSH_REC:
                rb_ary_push(insn, ID2SYM(rb_intern("memory_end_push_rec")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;

            case OP_MEMORY_END:
                rb_ary_push(insn, ID2SYM(rb_intern("memory_end")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;

            case OP_MEMORY_END_REC:
                rb_ary_push(insn, ID2SYM(rb_intern("memory_end_rec")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;

            case OP_KEEP: {
                rb_ary_push(insn, ID2SYM(rb_intern("keep")));
                break;
            }
            case OP_FAIL: {
                rb_ary_push(insn, ID2SYM(rb_intern("fail")));
                break;
            }
            case OP_JUMP: {
                rb_ary_push(insn, ID2SYM(rb_intern("jump")));
                rb_ary_push(insn, read_reladdr(&cursor));
                break;
            }
            case OP_PUSH: {
                rb_ary_push(insn, ID2SYM(rb_intern("push")));
                rb_ary_push(insn, read_reladdr(&cursor));
                break;
            }
            case OP_POP: {
                rb_ary_push(insn, ID2SYM(rb_intern("pop")));
                break;
            }
            case OP_PUSH_OR_JUMP_EXACT1: {
                rb_ary_push(insn, ID2SYM(rb_intern("push_or_jump_exact1")));
                rb_ary_push(insn, read_reladdr(&cursor));
                rb_ary_push(insn, read_exact(&cursor, 1, encoding));
                break;
            }
            case OP_PUSH_IF_PEEK_NEXT: {
                rb_ary_push(insn, ID2SYM(rb_intern("push_if_peek_next")));
                rb_ary_push(insn, read_reladdr(&cursor));
                rb_ary_push(insn, read_exact(&cursor, 1, encoding));
                break;
            }
            case OP_REPEAT: {
                rb_ary_push(insn, ID2SYM(rb_intern("repeat")));
                rb_ary_push(insn, read_memnum(&cursor));
                rb_ary_push(insn, read_reladdr(&cursor));
                break;
            }
            case OP_REPEAT_NG: {
                rb_ary_push(insn, ID2SYM(rb_intern("repeat_ng")));
                rb_ary_push(insn, read_memnum(&cursor));
                rb_ary_push(insn, read_reladdr(&cursor));
                break;
            }
            case OP_REPEAT_INC: {
                rb_ary_push(insn, ID2SYM(rb_intern("repeat_inc")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;
            }
            case OP_REPEAT_INC_NG: {
                rb_ary_push(insn, ID2SYM(rb_intern("repeat_inc_ng")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;
            }
            case OP_REPEAT_INC_SG: {
                rb_ary_push(insn, ID2SYM(rb_intern("repeat_inc_sg")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;
            }
            case OP_REPEAT_INC_NG_SG: {
                rb_ary_push(insn, ID2SYM(rb_intern("repeat_inc_ng_sg")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;
            }
            case OP_NULL_CHECK_START: {
                rb_ary_push(insn, ID2SYM(rb_intern("null_check_start")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;
            }
            case OP_NULL_CHECK_END: {
                rb_ary_push(insn, ID2SYM(rb_intern("null_check_end")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;
            }
            case OP_NULL_CHECK_END_MEMST: {
                rb_ary_push(insn, ID2SYM(rb_intern("null_check_end_memst")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;
            }
            case OP_NULL_CHECK_END_MEMST_PUSH: {
                rb_ary_push(insn, ID2SYM(rb_intern("null_check_end_memst_push")));
                rb_ary_push(insn, read_memnum(&cursor));
                break;
            }
            case OP_PUSH_POS: {
                rb_ary_push(insn, ID2SYM(rb_intern("push_pos")));
                break;
            }
            case OP_POP_POS: {
                rb_ary_push(insn, ID2SYM(rb_intern("pop_pos")));
                break;
            }
            case OP_PUSH_POS_NOT: {
                rb_ary_push(insn, ID2SYM(rb_intern("push_pos_not")));
                rb_ary_push(insn, read_reladdr(&cursor));
                break;
            }
            case OP_FAIL_POS: {
                rb_ary_push(insn, ID2SYM(rb_intern("fail_pos")));
                break;
            }
            case OP_PUSH_STOP_BT: {
                rb_ary_push(insn, ID2SYM(rb_intern("push_stop_bt")));
                break;
            }
            case OP_POP_STOP_BT: {
                rb_ary_push(insn, ID2SYM(rb_intern("pop_stop_bt")));
                break;
            }
            case OP_LOOK_BEHIND: {
                rb_ary_push(insn, ID2SYM(rb_intern("look_behind")));
                rb_ary_push(insn, read_length(&cursor));
                break;
            }
            case OP_PUSH_LOOK_BEHIND_NOT: {
                rb_ary_push(insn, ID2SYM(rb_intern("push_look_behind_not")));
                rb_ary_push(insn, read_reladdr(&cursor));
                rb_ary_push(insn, read_length(&cursor));
                break;
            }
            case OP_FAIL_LOOK_BEHIND_NOT: {
                rb_ary_push(insn, ID2SYM(rb_intern("fail_look_behind_not")));
                break;
            }
            case OP_PUSH_ABSENT_POS: {
                rb_ary_push(insn, ID2SYM(rb_intern("push_absent_pos")));
                break;
            }
            case OP_ABSENT: {
                rb_ary_push(insn, ID2SYM(rb_intern("absent")));
                rb_ary_push(insn, read_reladdr(&cursor));
                break;
            }
            case OP_ABSENT_END: {
                rb_ary_push(insn, ID2SYM(rb_intern("absent_end")));
                break;
            }
            case OP_CALL: {
                rb_ary_push(insn, ID2SYM(rb_intern("call")));
                rb_ary_push(insn, read_absaddr(&cursor));
                break;
            }
            case OP_RETURN: {
                rb_ary_push(insn, ID2SYM(rb_intern("return")));
                break;
            }
            case OP_CONDITION: {
                rb_ary_push(insn, ID2SYM(rb_intern("condition")));
                rb_ary_push(insn, read_memnum(&cursor));
                rb_ary_push(insn, read_reladdr(&cursor));
                break;
            }
            case OP_STATE_CHECK_PUSH: {
                rb_ary_push(insn, ID2SYM(rb_intern("state_check_push")));
                rb_ary_push(insn, read_state_check(&cursor));
                rb_ary_push(insn, read_reladdr(&cursor));
                break;
            }
            case OP_STATE_CHECK_PUSH_OR_JUMP: {
                rb_ary_push(insn, ID2SYM(rb_intern("state_check_push_or_jump")));
                rb_ary_push(insn, read_state_check(&cursor));
                rb_ary_push(insn, read_reladdr(&cursor));
                break;
            }
            case OP_STATE_CHECK: {
                rb_ary_push(insn, ID2SYM(rb_intern("state_check")));
                rb_ary_push(insn, read_state_check(&cursor));
                break;
            }
            case OP_STATE_CHECK_ANYCHAR_STAR: {
                rb_ary_push(insn, ID2SYM(rb_intern("state_check_anychar_star")));
                rb_ary_push(insn, read_state_check(&cursor));
                break;
            }
            case OP_STATE_CHECK_ANYCHAR_ML_STAR: {
                rb_ary_push(insn, ID2SYM(rb_intern("state_check_anychar_ml_star")));
                rb_ary_push(insn, read_state_check(&cursor));
                break;
            }
            case OP_SET_OPTION_PUSH: {
                rb_ary_push(insn, ID2SYM(rb_intern("set_option_push")));
                rb_ary_push(insn, read_option(&cursor));
                break;
            }
            case OP_SET_OPTION: {
                rb_ary_push(insn, ID2SYM(rb_intern("set_option")));
                rb_ary_push(insn, read_option(&cursor));
                break;
            }
        }

        rb_ary_push(insns, insn);
    }

    onig_free(regex);
    onig_end();
    return insns;
}

.parse(string) ⇒ Object 



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# File 'ext/onigmo/onigmo.c', line 284

static VALUE
parse(VALUE self, VALUE string) {
    const OnigUChar *pattern = (const OnigUChar *) StringValueCStr(string); 
    const OnigUChar *pattern_end = pattern + strlen((const char *) pattern);

    regex_t *regex = calloc(1, sizeof(regex_t));
    if (regex == NULL) {
        rb_raise(rb_eNoMemError, "failed to allocate memory");
        return Qnil;
    }

    int result;
    OnigEncoding encoding = rb_enc_get(string);

    if ((result = onig_reg_init(regex, ONIG_OPTION_DEFAULT, ONIGENC_CASE_FOLD_DEFAULT, encoding, ONIG_SYNTAX_DEFAULT)) != ONIG_NORMAL) {
        fail(result, regex, NULL);
        return Qnil;
    }

    OnigDistance init_size = (pattern_end - pattern) * 2;
    result = BBUF_INIT(regex, init_size);

    if (result != ONIG_NORMAL) {
        fail(result, regex, NULL);
        return Qnil;
    }

    Node *root;
    ScanEnv scan_env = { 0 };

    result = onig_parse_make_tree(&root, pattern, pattern_end, regex, &scan_env);
    if (result != ONIG_NORMAL) {
        fail(result, regex, NULL);
        return Qnil;
    }

    VALUE node = build_node(root, encoding);

    onig_node_free(root);
    onig_free(regex);
    onig_end();

    return node;
}