expressions working

Signed-off-by: Casey Lee <cplee@nektos.com>

vendor/github.com/robertkrimen/otto/cmpl_evaluate.go

@@ -0,0 +1,96 @@
+package otto
+
+import (
+	"strconv"
+)
+
+func (self *_runtime) cmpl_evaluate_nodeProgram(node *_nodeProgram, eval bool) Value {
+	if !eval {
+		self.enterGlobalScope()
+		defer func() {
+			self.leaveScope()
+		}()
+	}
+	self.cmpl_functionDeclaration(node.functionList)
+	self.cmpl_variableDeclaration(node.varList)
+	self.scope.frame.file = node.file
+	return self.cmpl_evaluate_nodeStatementList(node.body)
+}
+
+func (self *_runtime) cmpl_call_nodeFunction(function *_object, stash *_fnStash, node *_nodeFunctionLiteral, this Value, argumentList []Value) Value {
+
+	indexOfParameterName := make([]string, len(argumentList))
+	// function(abc, def, ghi)
+	// indexOfParameterName[0] = "abc"
+	// indexOfParameterName[1] = "def"
+	// indexOfParameterName[2] = "ghi"
+	// ...
+
+	argumentsFound := false
+	for index, name := range node.parameterList {
+		if name == "arguments" {
+			argumentsFound = true
+		}
+		value := Value{}
+		if index < len(argumentList) {
+			value = argumentList[index]
+			indexOfParameterName[index] = name
+		}
+		// strict = false
+		self.scope.lexical.setValue(name, value, false)
+	}
+
+	if !argumentsFound {
+		arguments := self.newArgumentsObject(indexOfParameterName, stash, len(argumentList))
+		arguments.defineProperty("callee", toValue_object(function), 0101, false)
+		stash.arguments = arguments
+		// strict = false
+		self.scope.lexical.setValue("arguments", toValue_object(arguments), false)
+		for index, _ := range argumentList {
+			if index < len(node.parameterList) {
+				continue
+			}
+			indexAsString := strconv.FormatInt(int64(index), 10)
+			arguments.defineProperty(indexAsString, argumentList[index], 0111, false)
+		}
+	}
+
+	self.cmpl_functionDeclaration(node.functionList)
+	self.cmpl_variableDeclaration(node.varList)
+
+	result := self.cmpl_evaluate_nodeStatement(node.body)
+	if result.kind == valueResult {
+		return result
+	}
+
+	return Value{}
+}
+
+func (self *_runtime) cmpl_functionDeclaration(list []*_nodeFunctionLiteral) {
+	executionContext := self.scope
+	eval := executionContext.eval
+	stash := executionContext.variable
+
+	for _, function := range list {
+		name := function.name
+		value := self.cmpl_evaluate_nodeExpression(function)
+		if !stash.hasBinding(name) {
+			stash.createBinding(name, eval == true, value)
+		} else {
+			// TODO 10.5.5.e
+			stash.setBinding(name, value, false) // TODO strict
+		}
+	}
+}
+
+func (self *_runtime) cmpl_variableDeclaration(list []string) {
+	executionContext := self.scope
+	eval := executionContext.eval
+	stash := executionContext.variable
+
+	for _, name := range list {
+		if !stash.hasBinding(name) {
+			stash.createBinding(name, eval == true, Value{}) // TODO strict?
+		}
+	}
+}