User manual

182
mikoBasic PRO for dsPIC30/33 and PIC24
MikroElektronika
Comments
Comments are pieces of text used to annotate a program, and are technically another form of whitespace. Comments are
for the programmer’s use only; they are stripped from the source text before parsing.
Use the apostrophe to create a comment:
‘ Any text between an apostrophe and the end of the
‘ line constitutes a comment. May span one line only.
There are no multi-line comments in mikroBasic PRO for dsPIC30/33 and PIC24
Tokens
Token is the smallest element of a mikroBasic PRO for dsPIC30/33 and PIC24 program, 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.
mikroBasic PRO for dsPIC30/33 and PIC24 recognizes the following kinds of tokens:
- keywords
- identiers
- constants
- operators
- punctuators (also known as separators)
Token Extraction Example
Here is an example of token extraction. Take a look at the following example code sequence:
end_ag = 0
First, note that end_ag would be parsed as a single identier, rather than as the keyword end followed by the identier
_ag.
The compiler would parse it as the following four tokens:
end_ag ‘ variable identier
= ‘ assignment operator
0 ‘ literal
newline ‘ statement terminator