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1687 lines (1035 loc) · 38 KB
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Grammar
0 $accept: program $end
1 program: TOK_PROGRAM TOK_IDENT TOK_SEMICOLON opt_declarations TOK_BEGIN opt_instructions TOK_END TOK_DOT
2 opt_declarations: declarations
3 | %empty
4 declarations: declaration
5 | declaration declarations
6 declaration: constdecl
7 | vardecl
8 | typedecl
9 constdecl: TOK_CONST constdefn_list
10 constdefn_list: constdefn
11 | constdefn constdefn_list
12 constdefn: TOK_IDENT TOK_EQUALS expression TOK_SEMICOLON
13 vardecl: TOK_VAR vardefn_list
14 vardefn_list: vardefn
15 | vardefn vardefn_list
16 vardefn: identifier_list TOK_COLON type TOK_SEMICOLON
17 identifier_list: TOK_IDENT
18 | TOK_IDENT TOK_COMMA identifier_list
19 typedecl: TOK_TYPE typedefn_list
20 typedefn_list: typedefn
21 | typedefn typedefn_list
22 typedefn: TOK_IDENT TOK_EQUALS type TOK_SEMICOLON
23 type: TOK_IDENT
24 | TOK_ARRAY expression TOK_OF type
25 | TOK_RECORD vardefn_list TOK_END
26 expression_list: expression
27 | expression TOK_COMMA expression_list
28 expression: expression TOK_PLUS term
29 | expression TOK_MINUS term
30 | term
31 term: term TOK_TIMES factor
32 | term TOK_DIV factor
33 | term TOK_MOD factor
34 | factor
35 factor: TOK_MINUS factor
36 | TOK_PLUS factor
37 | primary
38 primary: TOK_INT_LITERAL
39 | designator
40 | TOK_LPAREN expression TOK_RPAREN
41 opt_instructions: instructions
42 | %empty
43 instructions: instruction
44 | instruction instructions
45 instruction: assignstmt TOK_SEMICOLON
46 | ifstmt TOK_SEMICOLON
47 | repeatstmt TOK_SEMICOLON
48 | whilestmt TOK_SEMICOLON
49 | readstmt TOK_SEMICOLON
50 | writestmt TOK_SEMICOLON
51 assignstmt: designator TOK_ASSIGN expression
52 ifstmt: TOK_IF condition TOK_THEN opt_instructions TOK_END
53 | TOK_IF condition TOK_THEN opt_instructions TOK_ELSE opt_instructions TOK_END
54 repeatstmt: TOK_REPEAT opt_instructions TOK_UNTIL condition TOK_END
55 whilestmt: TOK_WHILE condition TOK_DO opt_instructions TOK_END
56 writestmt: TOK_WRITE expression
57 readstmt: TOK_READ designator
58 condition: expression TOK_LT expression
59 | expression TOK_LTE expression
60 | expression TOK_GT expression
61 | expression TOK_GTE expression
62 | expression TOK_EQUALS expression
63 | expression TOK_HASH expression
64 designator: TOK_IDENT
65 | designator TOK_LBRACKET expression_list TOK_RBRACKET
66 | designator TOK_DOT TOK_IDENT
Terminals, with rules where they appear
$end (0) 0
error (256)
TOK_IDENT (258) 1 12 17 18 22 23 64 66
TOK_INT_LITERAL (259) 38
TOK_PROGRAM (260) 1
TOK_BEGIN (261) 1
TOK_END (262) 1 25 52 53 54 55
TOK_CONST (263) 9
TOK_TYPE (264) 19
TOK_VAR (265) 13
TOK_ARRAY (266) 24
TOK_OF (267) 24
TOK_RECORD (268) 25
TOK_DIV (269) 32
TOK_MOD (270) 33
TOK_IF (271) 52 53
TOK_THEN (272) 52 53
TOK_ELSE (273) 53
TOK_REPEAT (274) 54
TOK_UNTIL (275) 54
TOK_WHILE (276) 55
TOK_DO (277) 55
TOK_READ (278) 57
TOK_WRITE (279) 56
TOK_ASSIGN (280) 51
TOK_SEMICOLON (281) 1 12 16 22 45 46 47 48 49 50
TOK_EQUALS (282) 12 22 62
TOK_COLON (283) 16
TOK_PLUS (284) 28 36
TOK_MINUS (285) 29 35
TOK_TIMES (286) 31
TOK_HASH (287) 63
TOK_LT (288) 58
TOK_GT (289) 60
TOK_LTE (290) 59
TOK_GTE (291) 61
TOK_LPAREN (292) 40
TOK_RPAREN (293) 40
TOK_LBRACKET (294) 65
TOK_RBRACKET (295) 65
TOK_DOT (296) 1 66
TOK_COMMA (297) 18 27
Nonterminals, with rules where they appear
$accept (43)
on left: 0
program (44)
on left: 1, on right: 0
opt_declarations (45)
on left: 2 3, on right: 1
declarations (46)
on left: 4 5, on right: 2 5
declaration (47)
on left: 6 7 8, on right: 4 5
constdecl (48)
on left: 9, on right: 6
constdefn_list (49)
on left: 10 11, on right: 9 11
constdefn (50)
on left: 12, on right: 10 11
vardecl (51)
on left: 13, on right: 7
vardefn_list (52)
on left: 14 15, on right: 13 15 25
vardefn (53)
on left: 16, on right: 14 15
identifier_list (54)
on left: 17 18, on right: 16 18
typedecl (55)
on left: 19, on right: 8
typedefn_list (56)
on left: 20 21, on right: 19 21
typedefn (57)
on left: 22, on right: 20 21
type (58)
on left: 23 24 25, on right: 16 22 24
expression_list (59)
on left: 26 27, on right: 27 65
expression (60)
on left: 28 29 30, on right: 12 24 26 27 28 29 40 51 56 58 59 60
61 62 63
term (61)
on left: 31 32 33 34, on right: 28 29 30 31 32 33
factor (62)
on left: 35 36 37, on right: 31 32 33 34 35 36
primary (63)
on left: 38 39 40, on right: 37
opt_instructions (64)
on left: 41 42, on right: 1 52 53 54 55
instructions (65)
on left: 43 44, on right: 41 44
instruction (66)
on left: 45 46 47 48 49 50, on right: 43 44
assignstmt (67)
on left: 51, on right: 45
ifstmt (68)
on left: 52 53, on right: 46
repeatstmt (69)
on left: 54, on right: 47
whilestmt (70)
on left: 55, on right: 48
writestmt (71)
on left: 56, on right: 50
readstmt (72)
on left: 57, on right: 49
condition (73)
on left: 58 59 60 61 62 63, on right: 52 53 54 55
designator (74)
on left: 64 65 66, on right: 39 51 57 65 66
State 0
0 $accept: . program $end
TOK_PROGRAM shift, and go to state 1
program go to state 2
State 1
1 program: TOK_PROGRAM . TOK_IDENT TOK_SEMICOLON opt_declarations TOK_BEGIN opt_instructions TOK_END TOK_DOT
TOK_IDENT shift, and go to state 3
State 2
0 $accept: program . $end
$end shift, and go to state 4
State 3
1 program: TOK_PROGRAM TOK_IDENT . TOK_SEMICOLON opt_declarations TOK_BEGIN opt_instructions TOK_END TOK_DOT
TOK_SEMICOLON shift, and go to state 5
State 4
0 $accept: program $end .
$default accept
State 5
1 program: TOK_PROGRAM TOK_IDENT TOK_SEMICOLON . opt_declarations TOK_BEGIN opt_instructions TOK_END TOK_DOT
TOK_CONST shift, and go to state 6
TOK_TYPE shift, and go to state 7
TOK_VAR shift, and go to state 8
$default reduce using rule 3 (opt_declarations)
opt_declarations go to state 9
declarations go to state 10
declaration go to state 11
constdecl go to state 12
vardecl go to state 13
typedecl go to state 14
State 6
9 constdecl: TOK_CONST . constdefn_list
TOK_IDENT shift, and go to state 15
constdefn_list go to state 16
constdefn go to state 17
State 7
19 typedecl: TOK_TYPE . typedefn_list
TOK_IDENT shift, and go to state 18
typedefn_list go to state 19
typedefn go to state 20
State 8
13 vardecl: TOK_VAR . vardefn_list
TOK_IDENT shift, and go to state 21
vardefn_list go to state 22
vardefn go to state 23
identifier_list go to state 24
State 9
1 program: TOK_PROGRAM TOK_IDENT TOK_SEMICOLON opt_declarations . TOK_BEGIN opt_instructions TOK_END TOK_DOT
TOK_BEGIN shift, and go to state 25
State 10
2 opt_declarations: declarations .
$default reduce using rule 2 (opt_declarations)
State 11
4 declarations: declaration .
5 | declaration . declarations
TOK_CONST shift, and go to state 6
TOK_TYPE shift, and go to state 7
TOK_VAR shift, and go to state 8
$default reduce using rule 4 (declarations)
declarations go to state 26
declaration go to state 11
constdecl go to state 12
vardecl go to state 13
typedecl go to state 14
State 12
6 declaration: constdecl .
$default reduce using rule 6 (declaration)
State 13
7 declaration: vardecl .
$default reduce using rule 7 (declaration)
State 14
8 declaration: typedecl .
$default reduce using rule 8 (declaration)
State 15
12 constdefn: TOK_IDENT . TOK_EQUALS expression TOK_SEMICOLON
TOK_EQUALS shift, and go to state 27
State 16
9 constdecl: TOK_CONST constdefn_list .
$default reduce using rule 9 (constdecl)
State 17
10 constdefn_list: constdefn .
11 | constdefn . constdefn_list
TOK_IDENT shift, and go to state 15
$default reduce using rule 10 (constdefn_list)
constdefn_list go to state 28
constdefn go to state 17
State 18
22 typedefn: TOK_IDENT . TOK_EQUALS type TOK_SEMICOLON
TOK_EQUALS shift, and go to state 29
State 19
19 typedecl: TOK_TYPE typedefn_list .
$default reduce using rule 19 (typedecl)
State 20
20 typedefn_list: typedefn .
21 | typedefn . typedefn_list
TOK_IDENT shift, and go to state 18
$default reduce using rule 20 (typedefn_list)
typedefn_list go to state 30
typedefn go to state 20
State 21
17 identifier_list: TOK_IDENT .
18 | TOK_IDENT . TOK_COMMA identifier_list
TOK_COMMA shift, and go to state 31
$default reduce using rule 17 (identifier_list)
State 22
13 vardecl: TOK_VAR vardefn_list .
$default reduce using rule 13 (vardecl)
State 23
14 vardefn_list: vardefn .
15 | vardefn . vardefn_list
TOK_IDENT shift, and go to state 21
$default reduce using rule 14 (vardefn_list)
vardefn_list go to state 32
vardefn go to state 23
identifier_list go to state 24
State 24
16 vardefn: identifier_list . TOK_COLON type TOK_SEMICOLON
TOK_COLON shift, and go to state 33
State 25
1 program: TOK_PROGRAM TOK_IDENT TOK_SEMICOLON opt_declarations TOK_BEGIN . opt_instructions TOK_END TOK_DOT
TOK_IDENT shift, and go to state 34
TOK_IF shift, and go to state 35
TOK_REPEAT shift, and go to state 36
TOK_WHILE shift, and go to state 37
TOK_READ shift, and go to state 38
TOK_WRITE shift, and go to state 39
$default reduce using rule 42 (opt_instructions)
opt_instructions go to state 40
instructions go to state 41
instruction go to state 42
assignstmt go to state 43
ifstmt go to state 44
repeatstmt go to state 45
whilestmt go to state 46
writestmt go to state 47
readstmt go to state 48
designator go to state 49
State 26
5 declarations: declaration declarations .
$default reduce using rule 5 (declarations)
State 27
12 constdefn: TOK_IDENT TOK_EQUALS . expression TOK_SEMICOLON
TOK_IDENT shift, and go to state 34
TOK_INT_LITERAL shift, and go to state 50
TOK_PLUS shift, and go to state 51
TOK_MINUS shift, and go to state 52
TOK_LPAREN shift, and go to state 53
expression go to state 54
term go to state 55
factor go to state 56
primary go to state 57
designator go to state 58
State 28
11 constdefn_list: constdefn constdefn_list .
$default reduce using rule 11 (constdefn_list)
State 29
22 typedefn: TOK_IDENT TOK_EQUALS . type TOK_SEMICOLON
TOK_IDENT shift, and go to state 59
TOK_ARRAY shift, and go to state 60
TOK_RECORD shift, and go to state 61
type go to state 62
State 30
21 typedefn_list: typedefn typedefn_list .
$default reduce using rule 21 (typedefn_list)
State 31
18 identifier_list: TOK_IDENT TOK_COMMA . identifier_list
TOK_IDENT shift, and go to state 21
identifier_list go to state 63
State 32
15 vardefn_list: vardefn vardefn_list .
$default reduce using rule 15 (vardefn_list)
State 33
16 vardefn: identifier_list TOK_COLON . type TOK_SEMICOLON
TOK_IDENT shift, and go to state 59
TOK_ARRAY shift, and go to state 60
TOK_RECORD shift, and go to state 61
type go to state 64
State 34
64 designator: TOK_IDENT .
$default reduce using rule 64 (designator)
State 35
52 ifstmt: TOK_IF . condition TOK_THEN opt_instructions TOK_END
53 | TOK_IF . condition TOK_THEN opt_instructions TOK_ELSE opt_instructions TOK_END
TOK_IDENT shift, and go to state 34
TOK_INT_LITERAL shift, and go to state 50
TOK_PLUS shift, and go to state 51
TOK_MINUS shift, and go to state 52
TOK_LPAREN shift, and go to state 53
expression go to state 65
term go to state 55
factor go to state 56
primary go to state 57
condition go to state 66
designator go to state 58
State 36
54 repeatstmt: TOK_REPEAT . opt_instructions TOK_UNTIL condition TOK_END
TOK_IDENT shift, and go to state 34
TOK_IF shift, and go to state 35
TOK_REPEAT shift, and go to state 36
TOK_WHILE shift, and go to state 37
TOK_READ shift, and go to state 38
TOK_WRITE shift, and go to state 39
$default reduce using rule 42 (opt_instructions)
opt_instructions go to state 67
instructions go to state 41
instruction go to state 42
assignstmt go to state 43
ifstmt go to state 44
repeatstmt go to state 45
whilestmt go to state 46
writestmt go to state 47
readstmt go to state 48
designator go to state 49
State 37
55 whilestmt: TOK_WHILE . condition TOK_DO opt_instructions TOK_END
TOK_IDENT shift, and go to state 34
TOK_INT_LITERAL shift, and go to state 50
TOK_PLUS shift, and go to state 51
TOK_MINUS shift, and go to state 52
TOK_LPAREN shift, and go to state 53
expression go to state 65
term go to state 55
factor go to state 56
primary go to state 57
condition go to state 68
designator go to state 58
State 38
57 readstmt: TOK_READ . designator
TOK_IDENT shift, and go to state 34
designator go to state 69
State 39
56 writestmt: TOK_WRITE . expression
TOK_IDENT shift, and go to state 34
TOK_INT_LITERAL shift, and go to state 50
TOK_PLUS shift, and go to state 51
TOK_MINUS shift, and go to state 52
TOK_LPAREN shift, and go to state 53
expression go to state 70
term go to state 55
factor go to state 56
primary go to state 57
designator go to state 58
State 40
1 program: TOK_PROGRAM TOK_IDENT TOK_SEMICOLON opt_declarations TOK_BEGIN opt_instructions . TOK_END TOK_DOT
TOK_END shift, and go to state 71
State 41
41 opt_instructions: instructions .
$default reduce using rule 41 (opt_instructions)
State 42
43 instructions: instruction .
44 | instruction . instructions
TOK_IDENT shift, and go to state 34
TOK_IF shift, and go to state 35
TOK_REPEAT shift, and go to state 36
TOK_WHILE shift, and go to state 37
TOK_READ shift, and go to state 38
TOK_WRITE shift, and go to state 39
$default reduce using rule 43 (instructions)
instructions go to state 72
instruction go to state 42
assignstmt go to state 43
ifstmt go to state 44
repeatstmt go to state 45
whilestmt go to state 46
writestmt go to state 47
readstmt go to state 48
designator go to state 49
State 43
45 instruction: assignstmt . TOK_SEMICOLON
TOK_SEMICOLON shift, and go to state 73
State 44
46 instruction: ifstmt . TOK_SEMICOLON
TOK_SEMICOLON shift, and go to state 74
State 45
47 instruction: repeatstmt . TOK_SEMICOLON
TOK_SEMICOLON shift, and go to state 75
State 46
48 instruction: whilestmt . TOK_SEMICOLON
TOK_SEMICOLON shift, and go to state 76
State 47
50 instruction: writestmt . TOK_SEMICOLON
TOK_SEMICOLON shift, and go to state 77
State 48
49 instruction: readstmt . TOK_SEMICOLON
TOK_SEMICOLON shift, and go to state 78
State 49
51 assignstmt: designator . TOK_ASSIGN expression
65 designator: designator . TOK_LBRACKET expression_list TOK_RBRACKET
66 | designator . TOK_DOT TOK_IDENT
TOK_ASSIGN shift, and go to state 79
TOK_LBRACKET shift, and go to state 80
TOK_DOT shift, and go to state 81
State 50
38 primary: TOK_INT_LITERAL .
$default reduce using rule 38 (primary)
State 51
36 factor: TOK_PLUS . factor
TOK_IDENT shift, and go to state 34
TOK_INT_LITERAL shift, and go to state 50
TOK_PLUS shift, and go to state 51
TOK_MINUS shift, and go to state 52
TOK_LPAREN shift, and go to state 53
factor go to state 82
primary go to state 57
designator go to state 58
State 52
35 factor: TOK_MINUS . factor
TOK_IDENT shift, and go to state 34
TOK_INT_LITERAL shift, and go to state 50
TOK_PLUS shift, and go to state 51
TOK_MINUS shift, and go to state 52
TOK_LPAREN shift, and go to state 53
factor go to state 83
primary go to state 57
designator go to state 58
State 53
40 primary: TOK_LPAREN . expression TOK_RPAREN
TOK_IDENT shift, and go to state 34
TOK_INT_LITERAL shift, and go to state 50
TOK_PLUS shift, and go to state 51
TOK_MINUS shift, and go to state 52
TOK_LPAREN shift, and go to state 53
expression go to state 84
term go to state 55
factor go to state 56
primary go to state 57
designator go to state 58
State 54
12 constdefn: TOK_IDENT TOK_EQUALS expression . TOK_SEMICOLON
28 expression: expression . TOK_PLUS term
29 | expression . TOK_MINUS term
TOK_SEMICOLON shift, and go to state 85
TOK_PLUS shift, and go to state 86
TOK_MINUS shift, and go to state 87
State 55
30 expression: term .
31 term: term . TOK_TIMES factor
32 | term . TOK_DIV factor
33 | term . TOK_MOD factor
TOK_DIV shift, and go to state 88
TOK_MOD shift, and go to state 89
TOK_TIMES shift, and go to state 90
$default reduce using rule 30 (expression)
State 56
34 term: factor .
$default reduce using rule 34 (term)
State 57
37 factor: primary .
$default reduce using rule 37 (factor)
State 58
39 primary: designator .
65 designator: designator . TOK_LBRACKET expression_list TOK_RBRACKET
66 | designator . TOK_DOT TOK_IDENT
TOK_LBRACKET shift, and go to state 80
TOK_DOT shift, and go to state 81
$default reduce using rule 39 (primary)
State 59
23 type: TOK_IDENT .
$default reduce using rule 23 (type)
State 60
24 type: TOK_ARRAY . expression TOK_OF type
TOK_IDENT shift, and go to state 34
TOK_INT_LITERAL shift, and go to state 50
TOK_PLUS shift, and go to state 51
TOK_MINUS shift, and go to state 52
TOK_LPAREN shift, and go to state 53
expression go to state 91
term go to state 55
factor go to state 56
primary go to state 57
designator go to state 58
State 61
25 type: TOK_RECORD . vardefn_list TOK_END
TOK_IDENT shift, and go to state 21
vardefn_list go to state 92
vardefn go to state 23
identifier_list go to state 24
State 62
22 typedefn: TOK_IDENT TOK_EQUALS type . TOK_SEMICOLON
TOK_SEMICOLON shift, and go to state 93
State 63
18 identifier_list: TOK_IDENT TOK_COMMA identifier_list .
$default reduce using rule 18 (identifier_list)
State 64
16 vardefn: identifier_list TOK_COLON type . TOK_SEMICOLON
TOK_SEMICOLON shift, and go to state 94
State 65
28 expression: expression . TOK_PLUS term
29 | expression . TOK_MINUS term
58 condition: expression . TOK_LT expression
59 | expression . TOK_LTE expression
60 | expression . TOK_GT expression
61 | expression . TOK_GTE expression
62 | expression . TOK_EQUALS expression
63 | expression . TOK_HASH expression
TOK_EQUALS shift, and go to state 95
TOK_PLUS shift, and go to state 86
TOK_MINUS shift, and go to state 87
TOK_HASH shift, and go to state 96
TOK_LT shift, and go to state 97
TOK_GT shift, and go to state 98
TOK_LTE shift, and go to state 99
TOK_GTE shift, and go to state 100
State 66
52 ifstmt: TOK_IF condition . TOK_THEN opt_instructions TOK_END
53 | TOK_IF condition . TOK_THEN opt_instructions TOK_ELSE opt_instructions TOK_END
TOK_THEN shift, and go to state 101
State 67
54 repeatstmt: TOK_REPEAT opt_instructions . TOK_UNTIL condition TOK_END
TOK_UNTIL shift, and go to state 102
State 68
55 whilestmt: TOK_WHILE condition . TOK_DO opt_instructions TOK_END
TOK_DO shift, and go to state 103
State 69
57 readstmt: TOK_READ designator .
65 designator: designator . TOK_LBRACKET expression_list TOK_RBRACKET
66 | designator . TOK_DOT TOK_IDENT
TOK_LBRACKET shift, and go to state 80
TOK_DOT shift, and go to state 81
$default reduce using rule 57 (readstmt)
State 70
28 expression: expression . TOK_PLUS term
29 | expression . TOK_MINUS term
56 writestmt: TOK_WRITE expression .
TOK_PLUS shift, and go to state 86
TOK_MINUS shift, and go to state 87
$default reduce using rule 56 (writestmt)
State 71
1 program: TOK_PROGRAM TOK_IDENT TOK_SEMICOLON opt_declarations TOK_BEGIN opt_instructions TOK_END . TOK_DOT
TOK_DOT shift, and go to state 104
State 72
44 instructions: instruction instructions .
$default reduce using rule 44 (instructions)
State 73
45 instruction: assignstmt TOK_SEMICOLON .
$default reduce using rule 45 (instruction)
State 74
46 instruction: ifstmt TOK_SEMICOLON .
$default reduce using rule 46 (instruction)
State 75
47 instruction: repeatstmt TOK_SEMICOLON .
$default reduce using rule 47 (instruction)
State 76