nes-pascal

Parser and syntax diagnostics

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Parser and syntax diagnostics use the E2000-E2999 range.

E2101 - Unknown command

• Category: Parser / Syntax
• Explanation: The command name is not part of the accepted grammar.

• Trigger:

  nes.background($21);
  

• Expected compiler output:

  E2101 demo.nsp:1:5
  
  Unknown command: nes.background.
  

• Suggested fix: Use nes.set_background_color(value);, nes.run;, nes.wait_frame;, or an assignment, update, or documented control-flow statement.

E2102 - Invalid syntax

• Category: Parser / Syntax
• Explanation: The token sequence does not match the grammar expected at that location.

• Trigger:

  Counter := ;
  

• Expected compiler output:

  E2102 demo.nsp:1:12
  
  Expected a literal, identifier, or parenthesized expression.
  

• Suggested fix: Follow the declaration and statement grammar documented in the Language Guide.

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