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simple visitor API and code to figure out scope and references

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This commit is contained in:
Mihai Bazon
2012-08-19 15:57:50 +03:00
parent 4488758d48
commit 6c35135ace
6 changed files with 474 additions and 102 deletions
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42
tmp/test-node.js
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@@ -19,28 +19,46 @@
load_global("../lib/utils.js");
load_global("../lib/ast.js");
load_global("../lib/parse.js");
load_global("../lib/scope.js");
load_global("../lib/output.js");
///
var filename = process.argv[2];
//console.time("parse");
console.time("parse");
var ast = parse(fs.readFileSync(filename, "utf8"));
//console.timeEnd("parse");
console.timeEnd("parse");
//console.time("generate");
var stream = OutputStream({ beautify: true });
console.time("figure_out_scope");
ast.figure_out_scope();
console.timeEnd("figure_out_scope");
console.time("generate");
ast.print(stream);
//console.timeEnd("generate");
sys.puts(stream.get());
console.timeEnd("generate");
//sys.puts(stream.get());
// console.time("walk");
// var w = new TreeWalker(function(node){
// console.log(node.TYPE + " [ start: " + node.start.line + ":" + node.start.col + ", end: " + node.end.line + ":" + node.end.col + "] " + node.name);
// });
// ast.walk(w);
// console.timeEnd("walk");
//console.log(JSON.stringify(ast));
var w = new TreeWalker(function(node, descend){
if (node.start) {
console.log(node.TYPE + " [" + node.start.line + ":" + node.start.col + "]");
} else {
console.log(node.TYPE + " [NO START]");
}
if (node instanceof AST_Scope) {
if (node.uses_eval) console.log("!!! uses eval");
if (node.uses_with) console.log("!!! uses with");
}
if (node instanceof AST_SymbolDeclaration) {
console.log("--- declaration " + node.name + (node.global ? " [global]" : ""));
}
else if (node instanceof AST_SymbolRef) {
console.log("--- reference " + node.name + " to " + (node.symbol ? node.symbol.name : "global"));
if (node.symbol) {
console.log(" declaration at: " + node.symbol.start.line + ":" + node.symbol.start.col);
}
}
});
ast._walk(w);
})();