107 lines
4.9 KiB
JavaScript
107 lines
4.9 KiB
JavaScript
|
var dict = require('./dict');
|
||
|
var fs = require('fs');
|
||
|
var grammar = {
|
||
|
|
||
|
lex: {
|
||
|
|
||
|
macros: {
|
||
|
esc: "\\\\",
|
||
|
int: dict.integer
|
||
|
},
|
||
|
|
||
|
rules: [
|
||
|
["\\$", "return 'DOLLAR'"],
|
||
|
["\\.\\.", "return 'DOT_DOT'"],
|
||
|
["\\.", "return 'DOT'"],
|
||
|
["\\*", "return 'STAR'"],
|
||
|
[dict.identifier, "return 'IDENTIFIER'"],
|
||
|
["\\[", "return '['"],
|
||
|
["\\]", "return ']'"],
|
||
|
[",", "return ','"],
|
||
|
["({int})?\\:({int})?(\\:({int})?)?", "return 'ARRAY_SLICE'"],
|
||
|
["{int}", "return 'INTEGER'"],
|
||
|
[dict.qq_string, "yytext = yytext.substr(1,yyleng-2); return 'QQ_STRING';"],
|
||
|
[dict.q_string, "yytext = yytext.substr(1,yyleng-2); return 'Q_STRING';"],
|
||
|
["\\(.+?\\)(?=\\])", "return 'SCRIPT_EXPRESSION'"],
|
||
|
["\\?\\(.+?\\)(?=\\])", "return 'FILTER_EXPRESSION'"]
|
||
|
]
|
||
|
},
|
||
|
|
||
|
start: "JSON_PATH",
|
||
|
|
||
|
bnf: {
|
||
|
|
||
|
JSON_PATH: [
|
||
|
[ 'DOLLAR', 'yy.ast.set({ expression: { type: "root", value: $1 } }); yy.ast.unshift(); return yy.ast.yield()' ],
|
||
|
[ 'DOLLAR PATH_COMPONENTS', 'yy.ast.set({ expression: { type: "root", value: $1 } }); yy.ast.unshift(); return yy.ast.yield()' ],
|
||
|
[ 'LEADING_CHILD_MEMBER_EXPRESSION', 'yy.ast.unshift(); return yy.ast.yield()' ],
|
||
|
[ '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()' ] ],
|
||
|
|
||
|
PATH_COMPONENTS: [
|
||
|
[ 'PATH_COMPONENT', '' ],
|
||
|
[ 'PATH_COMPONENTS PATH_COMPONENT', '' ] ],
|
||
|
|
||
|
PATH_COMPONENT: [
|
||
|
[ 'MEMBER_COMPONENT', 'yy.ast.set({ operation: "member" }); yy.ast.push()' ],
|
||
|
[ 'SUBSCRIPT_COMPONENT', 'yy.ast.set({ operation: "subscript" }); yy.ast.push() ' ] ],
|
||
|
|
||
|
MEMBER_COMPONENT: [
|
||
|
[ 'CHILD_MEMBER_COMPONENT', 'yy.ast.set({ scope: "child" })' ],
|
||
|
[ 'DESCENDANT_MEMBER_COMPONENT', 'yy.ast.set({ scope: "descendant" })' ] ],
|
||
|
|
||
|
CHILD_MEMBER_COMPONENT: [
|
||
|
[ 'DOT MEMBER_EXPRESSION', '' ] ],
|
||
|
|
||
|
LEADING_CHILD_MEMBER_EXPRESSION: [
|
||
|
[ 'MEMBER_EXPRESSION', 'yy.ast.set({ scope: "child", operation: "member" })' ] ],
|
||
|
|
||
|
DESCENDANT_MEMBER_COMPONENT: [
|
||
|
[ 'DOT_DOT MEMBER_EXPRESSION', '' ] ],
|
||
|
|
||
|
MEMBER_EXPRESSION: [
|
||
|
[ 'STAR', 'yy.ast.set({ expression: { type: "wildcard", value: $1 } })' ],
|
||
|
[ 'IDENTIFIER', 'yy.ast.set({ expression: { type: "identifier", value: $1 } })' ],
|
||
|
[ 'SCRIPT_EXPRESSION', 'yy.ast.set({ expression: { type: "script_expression", value: $1 } })' ],
|
||
|
[ 'INTEGER', 'yy.ast.set({ expression: { type: "numeric_literal", value: parseInt($1) } })' ],
|
||
|
[ 'END', '' ] ],
|
||
|
|
||
|
SUBSCRIPT_COMPONENT: [
|
||
|
[ 'CHILD_SUBSCRIPT_COMPONENT', 'yy.ast.set({ scope: "child" })' ],
|
||
|
[ 'DESCENDANT_SUBSCRIPT_COMPONENT', 'yy.ast.set({ scope: "descendant" })' ] ],
|
||
|
|
||
|
CHILD_SUBSCRIPT_COMPONENT: [
|
||
|
[ '[ SUBSCRIPT ]', '' ] ],
|
||
|
|
||
|
DESCENDANT_SUBSCRIPT_COMPONENT: [
|
||
|
[ 'DOT_DOT [ SUBSCRIPT ]', '' ] ],
|
||
|
|
||
|
SUBSCRIPT: [
|
||
|
[ 'SUBSCRIPT_EXPRESSION', '' ],
|
||
|
[ 'SUBSCRIPT_EXPRESSION_LIST', '$1.length > 1? yy.ast.set({ expression: { type: "union", value: $1 } }) : $$ = $1' ] ],
|
||
|
|
||
|
SUBSCRIPT_EXPRESSION_LIST: [
|
||
|
[ 'SUBSCRIPT_EXPRESSION_LISTABLE', '$$ = [$1]'],
|
||
|
[ 'SUBSCRIPT_EXPRESSION_LIST , SUBSCRIPT_EXPRESSION_LISTABLE', '$$ = $1.concat($3)' ] ],
|
||
|
|
||
|
SUBSCRIPT_EXPRESSION_LISTABLE: [
|
||
|
[ 'INTEGER', '$$ = { expression: { type: "numeric_literal", value: parseInt($1) } }; yy.ast.set($$)' ],
|
||
|
[ 'STRING_LITERAL', '$$ = { expression: { type: "string_literal", value: $1 } }; yy.ast.set($$)' ],
|
||
|
[ 'ARRAY_SLICE', '$$ = { expression: { type: "slice", value: $1 } }; yy.ast.set($$)' ] ],
|
||
|
|
||
|
SUBSCRIPT_EXPRESSION: [
|
||
|
[ 'STAR', '$$ = { expression: { type: "wildcard", value: $1 } }; yy.ast.set($$)' ],
|
||
|
[ 'SCRIPT_EXPRESSION', '$$ = { expression: { type: "script_expression", value: $1 } }; yy.ast.set($$)' ],
|
||
|
[ 'FILTER_EXPRESSION', '$$ = { expression: { type: "filter_expression", value: $1 } }; yy.ast.set($$)' ] ],
|
||
|
|
||
|
STRING_LITERAL: [
|
||
|
[ 'QQ_STRING', "$$ = $1" ],
|
||
|
[ 'Q_STRING', "$$ = $1" ] ]
|
||
|
}
|
||
|
};
|
||
|
if (fs.readFileSync) {
|
||
|
grammar.moduleInclude = fs.readFileSync(require.resolve("../include/module.js"));
|
||
|
grammar.actionInclude = fs.readFileSync(require.resolve("../include/action.js"));
|
||
|
}
|
||
|
|
||
|
module.exports = grammar;
|