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