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Diffstat (limited to 'depends/classparser/src/constants.h')
| -rw-r--r-- | depends/classparser/src/constants.h | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/depends/classparser/src/constants.h b/depends/classparser/src/constants.h deleted file mode 100644 index 242b943e..00000000 --- a/depends/classparser/src/constants.h +++ /dev/null @@ -1,220 +0,0 @@ -#pragma once -#include "errors.h" -#include <sstream> - -namespace java -{ -class constant -{ -public: - enum type_t : uint8_t - { - j_hole = 0, // HACK: this is a hole in the array, because java is crazy - j_string_data = 1, - j_int = 3, - j_float = 4, - j_long = 5, - j_double = 6, - j_class = 7, - j_string = 8, - j_fieldref = 9, - j_methodref = 10, - j_interface_methodref = 11, - j_nameandtype = 12 - } type; - - constant(util::membuffer &buf) - { - buf.read(type); - // invalid constant type! - if (type > j_nameandtype || type == (type_t)0 || type == (type_t)2) - throw new classfile_exception(); - - // load data depending on type - switch (type) - { - case j_float: - case j_int: - buf.read_be(int_data); // same as float data really - break; - case j_double: - case j_long: - buf.read_be(long_data); // same as double - break; - case j_class: - buf.read_be(ref_type.class_idx); - break; - case j_fieldref: - case j_methodref: - case j_interface_methodref: - buf.read_be(ref_type.class_idx); - buf.read_be(ref_type.name_and_type_idx); - break; - case j_string: - buf.read_be(index); - break; - case j_string_data: - // HACK HACK: for now, we call these UTF-8 and do no further processing. - // Later, we should do some decoding. It's really modified UTF-8 - // * U+0000 is represented as 0xC0,0x80 invalid character - // * any single zero byte ends the string - // * characters above U+10000 are encoded like in CESU-8 - buf.read_jstr(str_data); - break; - case j_nameandtype: - buf.read_be(name_and_type.name_index); - buf.read_be(name_and_type.descriptor_index); - break; - } - } - - constant(int fake) - { - type = j_hole; - } - - std::string toString() - { - std::ostringstream ss; - switch (type) - { - case j_hole: - ss << "Fake legacy entry"; - break; - case j_float: - ss << "Float: " << float_data; - break; - case j_double: - ss << "Double: " << double_data; - break; - case j_int: - ss << "Int: " << int_data; - break; - case j_long: - ss << "Long: " << long_data; - break; - case j_string_data: - ss << "StrData: " << str_data; - break; - case j_string: - ss << "Str: " << index; - break; - case j_fieldref: - ss << "FieldRef: " << ref_type.class_idx << " " << ref_type.name_and_type_idx; - break; - case j_methodref: - ss << "MethodRef: " << ref_type.class_idx << " " << ref_type.name_and_type_idx; - break; - case j_interface_methodref: - ss << "IfMethodRef: " << ref_type.class_idx << " " << ref_type.name_and_type_idx; - break; - case j_class: - ss << "Class: " << ref_type.class_idx; - break; - case j_nameandtype: - ss << "NameAndType: " << name_and_type.name_index << " " - << name_and_type.descriptor_index; - break; - } - return ss.str(); - } - - std::string str_data; /** String data in 'modified utf-8'.*/ - // store everything here. - union - { - int32_t int_data; - int64_t long_data; - float float_data; - double double_data; - uint16_t index; - struct - { - /** - * Class reference: - * an index within the constant pool to a UTF-8 string containing - * the fully qualified class name (in internal format) - * Used for j_class, j_fieldref, j_methodref and j_interface_methodref - */ - uint16_t class_idx; - // used for j_fieldref, j_methodref and j_interface_methodref - uint16_t name_and_type_idx; - } ref_type; - struct - { - uint16_t name_index; - uint16_t descriptor_index; - } name_and_type; - }; -}; - -/** - * A helper class that represents the custom container used in Java class file for storage of - * constants - */ -class constant_pool -{ -public: - /** - * Create a pool of constants - */ - constant_pool() - { - } - /** - * Load a java constant pool - */ - void load(util::membuffer &buf) - { - uint16_t length = 0; - buf.read_be(length); - length--; - uint16_t index = 1; - const constant *last_constant = nullptr; - while (length) - { - const constant &cnst = constant(buf); - constants.push_back(cnst); - last_constant = &constants[constants.size() - 1]; - if (last_constant->type == constant::j_double || - last_constant->type == constant::j_long) - { - // push in a fake constant to preserve indexing - constants.push_back(constant(0)); - length -= 2; - index += 2; - } - else - { - length--; - index++; - } - } - } - typedef std::vector<java::constant> container_type; - /** - * Access constants based on jar file index numbers (index of the first element is 1) - */ - java::constant &operator[](std::size_t constant_index) - { - if (constant_index == 0 || constant_index > constants.size()) - { - throw new classfile_exception(); - } - return constants[constant_index - 1]; - } - ; - container_type::const_iterator begin() const - { - return constants.begin(); - } - ; - container_type::const_iterator end() const - { - return constants.end(); - } - -private: - container_type constants; -}; -} |