Routines
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ED2D: Search Vocabulary (Verbs)
Used by the routine at JumpTable.
Jump-table target JumpTable_SearchVerbs (USR JumpTable_SearchVerbs): search Table_Verbs for the token at InputBuffer_TokenStart. Sets ParserState_MatchLength to 02 and walks up to index 2E. On a hit, returns BC=word index for BASIC GO TO n*100+1000 (see JumpTable); on a miss, BC=0000.
SearchVocabulary_Verbs ED2D LD A,$02 Set the minimum match length to 02.
ED2F LD ($5BA4),A
ED32 LD B,$2F Point HL at Table_Verbs with word limit 2F.
ED34 LD HL,$FAA9
This entry point is used by the routines at SearchVocabulary_Prepositions, SearchVocabulary_Nouns and SearchVocabulary_Commands.
Shared search loop used by SearchVocabulary_Verbs, SearchVocabulary_Prepositions, SearchVocabulary_Nouns and SearchVocabulary_Commands.
SearchVocabulary_Loop ED37 LD A,$01 Start the word index at 01.
ED39 LD ($5BA5),A
SearchVocabulary_TryWord ED3C PUSH HL Compare the current table word to the token at InputBuffer_TokenStart.
ED3D PUSH BC
ED3E LD DE,($5BA7)
ED42 CALL CompareTokenToWord
ED45 POP BC
ED46 POP HL
ED47 JR NC,SearchVocabulary_Matched Jump to SearchVocabulary_Matched if the word matched.
SearchVocabulary_SkipWord ED49 INC HL Skip ahead to the CR that ends this table word.
ED4A LD A,(HL)
ED4B CP $0D
ED4D JR NZ,SearchVocabulary_SkipWord
ED4F INC HL Advance the word index and try the next entry.
ED50 LD A,($5BA5)
ED53 INC A
ED54 LD ($5BA5),A
ED57 CP B
ED58 JR C,SearchVocabulary_TryWord Jump to SearchVocabulary_TryWord if there are more words to try.
ED5A LD BC,$0000 BC=0000 on a miss.
ED5D RET Return.
SearchVocabulary_Matched ED5E LD A,($5BA5) BC=the matched word index.
ED61 LD C,A
ED62 LD B,$00
ED64 RET Return.
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