Routines
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AC2F: Parser: Validate Two Direct Objects
Output
F The carry flag is set when the command is malformed
Parser_ValidateTwoDirectObjects AC2F CALL Parser_ValidateDirectObject Call Parser_ValidateDirectObject.
AC32 RET C Return if there is no direct object in the user input (so the command is malformed).
A now contains the count of the number of valid direct objects.
AC33 CP $01 Jump to ValidateTwoDirectObjects if the number of valid direct objects in the user input is not 01.
AC35 JR NZ,ValidateTwoDirectObjects
There is only one valid direct objects in the user input and the command needs two...
Print "Please be more specific.".
AC37 LD HL,$0017 HL=Messaging_PleaseBeMoreSpecific.
AC3A CALL PrintCompressedStringAndNewline Call PrintCompressedStringAndNewline.
AC3D SCF Set the carry flag.
AC3E RET Return.
There are two or more valid direct objects in the user input.
ValidateTwoDirectObjects AC3F CP $03 Jump to ValidateTwoDirectObjects_TooMany if the number of valid direct objects in the user input is greater than or equal to 03.
AC41 JR NC,ValidateTwoDirectObjects_TooMany
AC43 AND A Set zero flag.
AC44 RET Return.
There are more than two valid direct objects in the user input.
Print "Please rephrase that.".
ValidateTwoDirectObjects_TooMany AC45 LD HL,$0018 HL=Messaging_PleaseRephraseThat.
AC48 CALL PrintCompressedStringAndNewline Call PrintCompressedStringAndNewline.
AC4B SCF Set the carry flag.
AC4C RET Return.
View the equivalent code in;
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