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Add lit_char_is_octal_digit, lit_char_is_decimal_digit, lit_char_is_hex_digit helpers.

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JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
This commit is contained in:
Ruben Ayrapetyan
2015-07-08 15:17:41 +03:00
parent 393d693e23
commit afe58e90ae
2 changed files with 58 additions and 22 deletions
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jerry-core/lit/lit-char-helpers.cpp
+50 -20
View File
@@ -253,36 +253,51 @@ lit_char_is_unicode_connector_punctuation (ecma_char_t c) /**< code unit */
} /* lit_char_is_unicode_connector_punctuation */ } /* lit_char_is_unicode_connector_punctuation */
/** /**
* Check if specified character is a word character (part of IsWordChar abstract operation) * Check if specified character is one of OctalDigit characters (ECMA-262 v5, B.1.2)
* *
* See also: ECMA-262 v5, 15.10.2.6 (IsWordChar) * @return true / false
*
* @return true - if the character is a word character
* false - otherwise.
*/ */
bool bool
lit_char_is_word_char (ecma_char_t c) /**< code unit */ lit_char_is_octal_digit (ecma_char_t c) /**< code unit */
{ {
if ((c >= LIT_CHAR_ASCII_LOWERCASE_LETTERS_BEGIN && c <= LIT_CHAR_ASCII_LOWERCASE_LETTERS_END) return (c >= LIT_CHAR_ASCII_OCTAL_DIGITS_BEGIN && c <= LIT_CHAR_ASCII_OCTAL_DIGITS_END);
|| (c >= LIT_CHAR_ASCII_UPPERCASE_LETTERS_BEGIN && c <= LIT_CHAR_ASCII_UPPERCASE_LETTERS_END) } /* lit_char_is_octal_digit */
|| (c >= LIT_CHAR_ASCII_DIGITS_BEGIN && c <= LIT_CHAR_ASCII_DIGITS_END)
|| c == LIT_CHAR_UNDERSCORE)
{
return true;
}
return false;
} /* lit_char_is_word_char */
/** /**
* Convert a hex character to an unsigned integer * Check if specified character is one of DecimalDigit characters (ECMA-262 v5, 7.8.3)
*
* @return true / false
*/
bool
lit_char_is_decimal_digit (ecma_char_t c) /**< code unit */
{
return (c >= LIT_CHAR_ASCII_DIGITS_BEGIN && c <= LIT_CHAR_ASCII_DIGITS_END);
} /* lit_char_is_decimal_digit */
/**
* Check if specified character is one of HexDigit characters (ECMA-262 v5, 7.8.3)
*
* @return true / false
*/
bool
lit_char_is_hex_digit (ecma_char_t c) /**< code unit */
{
return ((c >= LIT_CHAR_ASCII_DIGITS_BEGIN && c <= LIT_CHAR_ASCII_DIGITS_END)
|| (c >= LIT_CHAR_ASCII_LOWERCASE_LETTERS_HEX_BEGIN && c <= LIT_CHAR_ASCII_LOWERCASE_LETTERS_HEX_END)
|| (c >= LIT_CHAR_ASCII_UPPERCASE_LETTERS_HEX_BEGIN && c <= LIT_CHAR_ASCII_UPPERCASE_LETTERS_HEX_END));
} /* lit_char_is_hex_digit */
/**
* Convert a HexDigit character to its numeric value, as defined in ECMA-262 v5, 7.8.3
* *
* @return digit value, corresponding to the hex char * @return digit value, corresponding to the hex char
*/ */
uint32_t uint32_t
lit_char_hex_to_int (ecma_char_t c) /**< code unit, corresponding to lit_char_hex_to_int (ecma_char_t c) /**< code unit, corresponding to
* one of [0-9A-Fa-f] characters */ * one of HexDigit characters */
{ {
JERRY_ASSERT (lit_char_is_hex_digit (c));
if (c >= LIT_CHAR_ASCII_DIGITS_BEGIN && c <= LIT_CHAR_ASCII_DIGITS_END) if (c >= LIT_CHAR_ASCII_DIGITS_BEGIN && c <= LIT_CHAR_ASCII_DIGITS_END)
{ {
return (uint32_t) (c - LIT_CHAR_ASCII_DIGITS_BEGIN); return (uint32_t) (c - LIT_CHAR_ASCII_DIGITS_BEGIN);
@@ -293,8 +308,23 @@ lit_char_hex_to_int (ecma_char_t c) /**< code unit, corresponding to
} }
else else
{ {
JERRY_ASSERT (c >= LIT_CHAR_ASCII_UPPERCASE_LETTERS_HEX_BEGIN && c <= LIT_CHAR_ASCII_UPPERCASE_LETTERS_HEX_END);
return (uint32_t) (c - LIT_CHAR_ASCII_UPPERCASE_LETTERS_HEX_BEGIN + 10); return (uint32_t) (c - LIT_CHAR_ASCII_UPPERCASE_LETTERS_HEX_BEGIN + 10);
} }
} /* lit_char_hex_to_int */ } /* lit_char_hex_to_int */
/**
* Check if specified character is a word character (part of IsWordChar abstract operation)
*
* See also: ECMA-262 v5, 15.10.2.6 (IsWordChar)
*
* @return true - if the character is a word character
* false - otherwise.
*/
bool
lit_char_is_word_char (ecma_char_t c) /**< code unit */
{
return ((c >= LIT_CHAR_ASCII_LOWERCASE_LETTERS_BEGIN && c <= LIT_CHAR_ASCII_LOWERCASE_LETTERS_END)
|| (c >= LIT_CHAR_ASCII_UPPERCASE_LETTERS_BEGIN && c <= LIT_CHAR_ASCII_UPPERCASE_LETTERS_END)
|| (c >= LIT_CHAR_ASCII_DIGITS_BEGIN && c <= LIT_CHAR_ASCII_DIGITS_END)
|| c == LIT_CHAR_UNDERSCORE);
} /* lit_char_is_word_char */
jerry-core/lit/lit-char-helpers.h
+8 -2
View File
@@ -199,9 +199,17 @@ extern bool lit_char_is_unicode_connector_punctuation (ecma_char_t);
* hexadecimal digits range */ * hexadecimal digits range */
#define LIT_CHAR_ASCII_LOWERCASE_LETTERS_HEX_END LIT_CHAR_LOWERCASE_F #define LIT_CHAR_ASCII_LOWERCASE_LETTERS_HEX_END LIT_CHAR_LOWERCASE_F
#define LIT_CHAR_ASCII_OCTAL_DIGITS_BEGIN LIT_CHAR_0 /* octal digits range */
#define LIT_CHAR_ASCII_OCTAL_DIGITS_END LIT_CHAR_7
#define LIT_CHAR_ASCII_DIGITS_BEGIN LIT_CHAR_0 /* decimal digits range */ #define LIT_CHAR_ASCII_DIGITS_BEGIN LIT_CHAR_0 /* decimal digits range */
#define LIT_CHAR_ASCII_DIGITS_END LIT_CHAR_9 #define LIT_CHAR_ASCII_DIGITS_END LIT_CHAR_9
extern bool lit_char_is_octal_digit (ecma_char_t);
extern bool lit_char_is_decimal_digit (ecma_char_t);
extern bool lit_char_is_hex_digit (ecma_char_t);
extern uint32_t lit_char_hex_to_int (ecma_char_t);
/** /**
* Null character * Null character
*/ */
@@ -212,6 +220,4 @@ extern bool lit_char_is_unicode_connector_punctuation (ecma_char_t);
*/ */
extern bool lit_char_is_word_char (ecma_char_t); extern bool lit_char_is_word_char (ecma_char_t);
extern uint32_t lit_char_hex_to_int (ecma_char_t);
#endif /* LIT_CHAR_HELPERS_H */ #endif /* LIT_CHAR_HELPERS_H */