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Improve parsing of symbols.

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In particular, don't confuse `4..` with a symbol.
This commit is contained in:
Olaf Seibert
2022-06-04 21:07:10 +02:00
parent 8d7414d7c3
commit ff183c0e36
5 changed files with 118 additions and 16 deletions
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64
tests/test-syntax.lst.ok Normal file
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1 ;;;;
2 ;
3 ; Test some aspects of syntax.
4 ;
5 ; Reference MACRO11 does very weird things with these errors.
6 ; Fortunately I don't plan to produce exactly the same results in case of errors.
7 ; It seems to recognise an operand where there is none (or none yet)...
8 ;
9 ; AQ 37 000022 012767 000004 177772 mov #4..,r0
10 ; AQ 38 000030 012767 000011 177772 mov #9..,r0
11 ; AQ 39 000036 012767 000004 000000G mov #4.$,r0
12 ; AQU 40 000044 012767 000000 177772 mov #4$.,r0
13 ; 41
14 ; A 42 000052 012767 000004 177772 mov #4..
15 ; A 43 000060 012767 000004 000000G mov #4.$
16 ; AU 44 000066 012767 000000 177772 mov #4$.
17
test-syntax.mac:18: ***ERROR Invalid syntax (comma expected)
18 mov #4..,r0 ; bad syntax
test-syntax.mac:19: ***ERROR Invalid syntax (comma expected)
19 mov #4$.,r0 ; bad syntax
test-syntax.mac:20: ***ERROR Invalid syntax (comma expected)
20 mov #4.$,r0 ; bad syntax
test-syntax.mac:21: ***ERROR Invalid syntax (comma expected)
21 mov #4$$,r0 ; bad syntax
22
test-syntax.mac:23: ***ERROR Invalid syntax (comma expected)
23 mov #4.. ; bad syntax
test-syntax.mac:24: ***ERROR Invalid syntax (comma expected)
24 mov #4$. ; bad syntax
test-syntax.mac:25: ***ERROR Invalid syntax (comma expected)
25 mov #4.$ ; bad syntax
test-syntax.mac:26: ***ERROR Invalid syntax (comma expected)
26 mov #4$$ ; bad syntax
27
28 ;; page 2-4:
29 ;; Multiple expressions used in the operand field of a MACRO-11 statement
30 ;; must be separated by a comma;
31 ;; multiple symbols similarly must be delimited by a valid separator
32 ;; (a comma, tab, and/or space).
33 ;; When the operator field contains an op code, associated operands are
34 ;; always expressions, ...
35
36 000001 a=1
test-syntax.mac:37: ***ERROR Invalid syntax (comma expected)
37 mov #4 r0
test-syntax.mac:38: ***ERROR Invalid syntax (comma expected)
38 mov a r0
39
40 ;; page 2-3:
41 ;; An operator is terminated by a space, tab, or any non-Radix-50 character,
42 000000 017700 000001' mov@a,r0
42
Symbol table
. 000004R 001 A = 000001
Program sections:
. ABS. 000000 000 (RW,I,GBL,ABS,OVR,NOSAV)
000004 001 (RW,I,LCL,REL,CON,NOSAV)