Code coverage report for sc/lang/compiler/parser/signed-expr.js

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(function(sc) {
  "use strict";
 
  require("./parser");
 
  var Syntax = sc.lang.compiler.Syntax;
  var Token = sc.lang.compiler.Token;
  var Node = sc.lang.compiler.Node;
  var Parser = sc.lang.compiler.Parser;
 
  /*
    SignedExpression :
      PrimaryExpression
      - PrimaryExpression
  */
  Parser.addParseMethod("SignedExpression", function() {
    // TODO: fix like this
    // if (!this.match("-")) {
    //   return this.parsePrimaryExpression();
    // }
 
    var marker = this.createMarker();
    var expr;
    if (this.match("-")) {
      this.lex();
      var method = Node.createIdentifier("neg");
      method = marker.update().apply(method);
      expr = this.parsePrimaryExpression();
      if (isNumber(expr)) {
        expr.value = "-" + expr.value;
      } else {
        expr = Node.createCallExpression(expr, method, { list: [] }, "(");
      }
    } else {
      expr = this.parsePrimaryExpression();
    }
 
    return marker.update().apply(expr, true);
  });
 
  function isNumber(node) {
    if (node.type !== Syntax.Literal) {
      return false;
    }
    var valueType = node.valueType;
    return valueType === Token.IntegerLiteral || valueType === Token.FloatLiteral;
  }
})(sc);