Just like breaking down a sentence in English into nouns, verbs, adverbs, etc, Parsers take code and break its syntax into different parts ready to be converted into instructions the computer will understand.
Use Cases and Examples
Let's assume you have this expression to parse
find customers with age equals 32. The parser breaks down the expression into:
findas the main command
ageas the field names
with equalsas the conditional search
32as the search data
With this extra context, the compiler or interpreter knows which instruction set to send over to the computer to find customers who are 32 years of age.
For machines to function, a human-readable instruction need to be converted into machine language. This job is done by the compiler or interpreter. The parser acts as a component of the compiler or interpreter that organizes the data for easier interpretation.
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