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4.99 kBJavaScriptView Raw
1var dict = require('./dict');
2var fs = require('fs');
3var grammar = {
4
5 lex: {
6
7 macros: {
8 esc: "\\\\",
9 int: dict.integer
10 },
11
12 rules: [
13 ["\\$", "return 'DOLLAR'"],
14 ["\\.\\.", "return 'DOT_DOT'"],
15 ["\\.", "return 'DOT'"],
16 ["\\*", "return 'STAR'"],
17 [dict.identifier, "return 'IDENTIFIER'"],
18 ["\\[", "return '['"],
19 ["\\]", "return ']'"],
20 [",", "return ','"],
21 ["({int})?\\:({int})?(\\:({int})?)?", "return 'ARRAY_SLICE'"],
22 ["{int}", "return 'INTEGER'"],
23 [dict.qq_string, "yytext = yytext.substr(1,yyleng-2); return 'QQ_STRING';"],
24 [dict.q_string, "yytext = yytext.substr(1,yyleng-2); return 'Q_STRING';"],
25 ["\\(.+?\\)(?=\\])", "return 'SCRIPT_EXPRESSION'"],
26 ["\\?\\(.+?\\)(?=\\])", "return 'FILTER_EXPRESSION'"]
27 ]
28 },
29
30 start: "JSON_PATH",
31
32 bnf: {
33
34 JSON_PATH: [
35 [ 'DOLLAR', 'yy.ast.set({ expression: { type: "root", value: $1 } }); yy.ast.unshift(); return yy.ast.yield()' ],
36 [ 'DOLLAR PATH_COMPONENTS', 'yy.ast.set({ expression: { type: "root", value: $1 } }); yy.ast.unshift(); return yy.ast.yield()' ],
37 [ 'LEADING_CHILD_MEMBER_EXPRESSION', 'yy.ast.unshift(); return yy.ast.yield()' ],
38 [ 'LEADING_CHILD_MEMBER_EXPRESSION PATH_COMPONENTS', 'yy.ast.set({ operation: "member", scope: "child", expression: { type: "identifier", value: $1 }}); yy.ast.unshift(); return yy.ast.yield()' ] ],
39
40 PATH_COMPONENTS: [
41 [ 'PATH_COMPONENT', '' ],
42 [ 'PATH_COMPONENTS PATH_COMPONENT', '' ] ],
43
44 PATH_COMPONENT: [
45 [ 'MEMBER_COMPONENT', 'yy.ast.set({ operation: "member" }); yy.ast.push()' ],
46 [ 'SUBSCRIPT_COMPONENT', 'yy.ast.set({ operation: "subscript" }); yy.ast.push() ' ] ],
47
48 MEMBER_COMPONENT: [
49 [ 'CHILD_MEMBER_COMPONENT', 'yy.ast.set({ scope: "child" })' ],
50 [ 'DESCENDANT_MEMBER_COMPONENT', 'yy.ast.set({ scope: "descendant" })' ] ],
51
52 CHILD_MEMBER_COMPONENT: [
53 [ 'DOT MEMBER_EXPRESSION', '' ] ],
54
55 LEADING_CHILD_MEMBER_EXPRESSION: [
56 [ 'MEMBER_EXPRESSION', 'yy.ast.set({ scope: "child", operation: "member" })' ] ],
57
58 DESCENDANT_MEMBER_COMPONENT: [
59 [ 'DOT_DOT MEMBER_EXPRESSION', '' ] ],
60
61 MEMBER_EXPRESSION: [
62 [ 'STAR', 'yy.ast.set({ expression: { type: "wildcard", value: $1 } })' ],
63 [ 'IDENTIFIER', 'yy.ast.set({ expression: { type: "identifier", value: $1 } })' ],
64 [ 'SCRIPT_EXPRESSION', 'yy.ast.set({ expression: { type: "script_expression", value: $1 } })' ],
65 [ 'INTEGER', 'yy.ast.set({ expression: { type: "numeric_literal", value: parseInt($1) } })' ],
66 [ 'END', '' ] ],
67
68 SUBSCRIPT_COMPONENT: [
69 [ 'CHILD_SUBSCRIPT_COMPONENT', 'yy.ast.set({ scope: "child" })' ],
70 [ 'DESCENDANT_SUBSCRIPT_COMPONENT', 'yy.ast.set({ scope: "descendant" })' ] ],
71
72 CHILD_SUBSCRIPT_COMPONENT: [
73 [ '[ SUBSCRIPT ]', '' ] ],
74
75 DESCENDANT_SUBSCRIPT_COMPONENT: [
76 [ 'DOT_DOT [ SUBSCRIPT ]', '' ] ],
77
78 SUBSCRIPT: [
79 [ 'SUBSCRIPT_EXPRESSION', '' ],
80 [ 'SUBSCRIPT_EXPRESSION_LIST', '$1.length > 1? yy.ast.set({ expression: { type: "union", value: $1 } }) : $$ = $1' ] ],
81
82 SUBSCRIPT_EXPRESSION_LIST: [
83 [ 'SUBSCRIPT_EXPRESSION_LISTABLE', '$$ = [$1]'],
84 [ 'SUBSCRIPT_EXPRESSION_LIST , SUBSCRIPT_EXPRESSION_LISTABLE', '$$ = $1.concat($3)' ] ],
85
86 SUBSCRIPT_EXPRESSION_LISTABLE: [
87 [ 'INTEGER', '$$ = { expression: { type: "numeric_literal", value: parseInt($1) } }; yy.ast.set($$)' ],
88 [ 'STRING_LITERAL', '$$ = { expression: { type: "string_literal", value: $1 } }; yy.ast.set($$)' ],
89 [ 'ARRAY_SLICE', '$$ = { expression: { type: "slice", value: $1 } }; yy.ast.set($$)' ] ],
90
91 SUBSCRIPT_EXPRESSION: [
92 [ 'STAR', '$$ = { expression: { type: "wildcard", value: $1 } }; yy.ast.set($$)' ],
93 [ 'SCRIPT_EXPRESSION', '$$ = { expression: { type: "script_expression", value: $1 } }; yy.ast.set($$)' ],
94 [ 'FILTER_EXPRESSION', '$$ = { expression: { type: "filter_expression", value: $1 } }; yy.ast.set($$)' ] ],
95
96 STRING_LITERAL: [
97 [ 'QQ_STRING', "$$ = $1" ],
98 [ 'Q_STRING', "$$ = $1" ] ]
99 }
100};
101if (fs.readFileSync) {
102 grammar.moduleInclude = fs.readFileSync(require.resolve("../include/module.js"));
103 grammar.actionInclude = fs.readFileSync(require.resolve("../include/action.js"));
104}
105
106module.exports = grammar;