| 1 | var esprima = require("esprima");
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| 2 | var sourceMapToAst = require("sourcemap-to-ast");
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| 3 |
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| 4 | module.exports = getAst;
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| 5 |
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| 6 | /**
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| 7 | * Get the ast for a load or create one if it doesn't exist.
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| 8 | */
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| 9 | function getAst(load, sourceMapFileName){
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| 10 | if(load.ast) {
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| 11 | return load.ast;
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| 12 | }
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| 13 |
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| 14 | var fileName = sourceMapFileName || load.map && load.map.file;
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| 15 |
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| 16 | load.ast = esprima.parse(load.source.toString(), {
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| 17 | loc: true,
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| 18 | source: fileName || load.address
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| 19 | });
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| 20 |
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| 21 | if(load.map) {
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| 22 | sourceMapToAst(load.ast, load.map);
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| 23 | }
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| 24 |
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| 25 | return load.ast;
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| 26 | }
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