SQLite3 determining the Token type (Keyword)

The getToken function of SQLite3 is used to determine the Token in the SQL statement and return the length of the Token. Some basic tokens (such as operators and parentheses) are placed in lengthy

The getToken function of SQLite3 is used to determine the Token in the SQL statement and return the length of the Token. Some basic tokens (such as operators and parentheses) are placed in lengthy

The getToken function of SQLite3 is used to determine the Token in the SQL statement and return the length of the Token. Some basic tokens (such as operators and parentheses) are placed in lengthy Switch... case. The judgment on keyword refers to keywordCode, which actually contains a HashTable structure:

Hash function :( (toLower (z [0]) * 4) ^ (toLower (z [n-1]) * 3) ^ n) % 127

Conflict Resolution: aNext Array

To increase search speed, use aLen to compare the length. When toLower () is implemented, the charMap ing table is used to avoid the If judgment.

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