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Jan Lindemann
a3a8313ce8
First time parsing doesn't error out with a syntax error. No usable AST is produced, strings are not returned from lexer, and AST lists aren't lists, really.
TEXT:="Hello world!"; had to be excluded from the example, because I don't get how this could be parsed with the given syntax. There's a special sequence "all visible characters", but any lexer regex I could think of will also match the types defining "alphabetic character" and return the respective tokens (e.g. T_A) or vice-versa, depending on the order in the lexer input file. I suppose, the only sensible way to handle this, is to define "all visible characters" by defining the tokens for the missing characters, and then use them along T_A ... T_Z or their derived types.
Signed-off-by: Jan Lindemann <jan@janware.com>
9 lines
97 B
Text
9 lines
97 B
Text
PROGRAM DEMO1
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BEGIN
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A:=3;
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B:=45;
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H:=-100023;
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C:=A;
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D123:=B34A;
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BABOON:=GIRAFFE;
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END.
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