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Token is the smallest element of a C program that is meaningful to the compiler.
The parser separates tokens from the input stream by creating the longest token
possible using the input characters in a left–to–right scan.
mikroC recognizes following kinds of tokens:
- keywords,
- identifiers,
- constants,
- operators,
- punctuators (also known as separators).
Token Extraction Example
Here is an example of token extraction. Let’s have the following code sequence:
inter = a+++b;
First, note that inter would be parsed as a single identifier, rather than as the
keyword
int followed by the identifier er.
The programmer who wrote the code might have intended to write
inter = a + (++b)
but it won’t work that way. The compiler would parse it as the following seven
tokens:
inter
// identifier
=
// assignment operator
a
// identifier
++
// postincrement operator
+
// addition operator
b
// identifier
;
// semicolon separator
Note that +++ parses as ++ (the longest token possible) followed by +.
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