// while
private static void rule_while(DefaultMutableTreeNode parent) {
DefaultMutableTreeNode node = new DefaultMutableTreeNode("while");
parent.add(node);
String start = "whileS" + labelNum;
final int num = labelNum;
String end = "whileE" + labelNum;
labelNum++;
CodeGenerator.addLabel(start, codeLine);
if (tokens.get(currentToken).getWord().equals("(")) {
node = new DefaultMutableTreeNode("(");
parent.add(node);
if (currentToken < tokens.size() - 1) currentToken++;
}
node = new DefaultMutableTreeNode("expression");
parent.add(node);
rule_expression(node);
CodeGenerator.addInstruction("JMC", "#" + end, "false");
codeLine++;
int n = tokens.get(currentToken).getLine();
String x = SemanticAnalyzer.popStack();
if (!x.equals("BOOLEAN")) SemanticAnalyzer.error(gui, 3, n, "");
if (tokens.get(currentToken).getWord().equals(")")) {
node = new DefaultMutableTreeNode(")");
parent.add(node);
if (currentToken < tokens.size() - 1) currentToken++;
}
node = new DefaultMutableTreeNode("program");
parent.add(node);
rule_program(node);
CodeGenerator.addInstruction("JMP", "#" + start, "0");
codeLine++;
CodeGenerator.addLabel("whileE" + num, codeLine);
}
// switch
private static void rule_switch(DefaultMutableTreeNode parent) {
DefaultMutableTreeNode node = null;
DefaultMutableTreeNode parentS = parent;
node = new DefaultMutableTreeNode("switch");
parent.add(node);
String id = "";
if (tokens.get(currentToken).getWord().equals("(")) {
node = new DefaultMutableTreeNode("(");
parent.add(node);
currentToken++;
}
if (tokens.get(currentToken).getToken().equals("IDENTIFIER")) {
node = new DefaultMutableTreeNode("identifier(" + tokens.get(currentToken).getWord() + ")");
parent.add(node);
int line = tokens.get(currentToken).getLine();
id = tokens.get(currentToken).getWord();
String type = SemanticAnalyzer.doesExist(id);
String value = SemanticAnalyzer.getValue(id);
if (type.equals("error")) SemanticAnalyzer.error(gui, 0, line, id);
currentToken++;
}
if (tokens.get(currentToken).getWord().equals(")")) {
node = new DefaultMutableTreeNode(")");
parent.add(node);
currentToken++;
}
if (tokens.get(currentToken).getWord().equals("{")) {
node = new DefaultMutableTreeNode("{");
parent.add(node);
currentToken++;
}
if (tokens.get(currentToken).getWord().equals("case")) {
node = new DefaultMutableTreeNode("case");
parentS.add(node);
currentToken++;
}
rule_cases(parentS, node, id);
if (tokens.get(currentToken).getWord().equals("default")) {
node = new DefaultMutableTreeNode("default");
parent.add(node);
currentToken++;
CodeGenerator.addInstruction("JMP", "#labelD", "0");
codeLine++;
rule_default(node);
}
if (tokens.get(currentToken).getWord().equals("}")) {
node = new DefaultMutableTreeNode("}");
parent.add(node);
currentToken++;
}
// codeLine++;
// codeLine++;
CodeGenerator.addLabel("labelES", codeLine);
}
// default
private static void rule_default(DefaultMutableTreeNode parent) {
DefaultMutableTreeNode node = null;
node = new DefaultMutableTreeNode("default");
parent.add(node);
if (tokens.get(currentToken).getWord().equals(":")) {
node = new DefaultMutableTreeNode(":");
parent.add(node);
currentToken++;
}
CodeGenerator.addLabel("labelD", codeLine);
rule_program(parent);
}
// if
private static void rule_if(DefaultMutableTreeNode parent) {
DefaultMutableTreeNode node = new DefaultMutableTreeNode("if");
parent.add(node);
String end = "ifE" + ifNum;
int num = ifNum;
ifNum++;
if (tokens.get(currentToken).getWord().equals("(")) {
node = new DefaultMutableTreeNode("(");
parent.add(node);
node = new DefaultMutableTreeNode("expression");
parent.add(node);
if (currentToken < tokens.size() - 1) currentToken++;
rule_expression(node);
CodeGenerator.addInstruction("JMC", "#ifE" + ifNum, "false");
codeLine++;
int n = tokens.get(currentToken).getLine();
String x = SemanticAnalyzer.popStack();
if (!x.equals("BOOLEAN")) SemanticAnalyzer.error(gui, 3, n, "");
if (tokens.get(currentToken).getWord().equals(")")) {
node = new DefaultMutableTreeNode(")");
parent.add(node);
node = new DefaultMutableTreeNode("program");
parent.add(node);
if (currentToken < tokens.size() - 1) currentToken++;
rule_program(node);
CodeGenerator.addInstruction("JMP", "#ifE" + num, "0");
codeLine++;
CodeGenerator.addLabel("ifE" + ifNum, codeLine);
if (tokens.get(currentToken).getWord().equals("else")) {
node = new DefaultMutableTreeNode("else");
parent.add(node);
node = new DefaultMutableTreeNode("program");
parent.add(node);
if (currentToken < tokens.size() - 1) currentToken++;
rule_program(node);
}
CodeGenerator.addLabel("ifE" + num, codeLine);
}
}
}
// cases
private static void rule_cases(
DefaultMutableTreeNode parent, DefaultMutableTreeNode caseParent, String id) {
DefaultMutableTreeNode node = null;
DefaultMutableTreeNode nodeP = caseParent;
node = new DefaultMutableTreeNode("case");
caseParent.add(node);
// int labelNum = 2;
// int num = lNum;
do {
if (tokens.get(currentToken).getWord().equals("case")) {
nodeP = new DefaultMutableTreeNode("case");
parent.add(nodeP);
currentToken++;
node = new DefaultMutableTreeNode("case");
nodeP.add(node);
}
String name = tokens.get(currentToken).getWord();
String type = tokens.get(currentToken).getToken();
String value = SemanticAnalyzer.getValue(name);
if (type.equals("INTEGER")) {
node = new DefaultMutableTreeNode("integer(" + name + ")");
nodeP.add(node);
currentToken++;
CodeGenerator.addInstruction("LOD", id, "0");
codeLine++;
CodeGenerator.addInstruction("LIT", name, "0");
codeLine++;
CodeGenerator.addInstruction("OPR", "15", "0");
codeLine++;
CodeGenerator.addInstruction("JMC", "#label" + lNum, "false");
codeLine++;
} else if (type.equals("OCTAL")) {
node = new DefaultMutableTreeNode("octal(" + name + ")");
nodeP.add(node);
currentToken++;
CodeGenerator.addInstruction("LOD", id, "0");
codeLine++;
CodeGenerator.addInstruction("LIT", name, "0");
codeLine++;
CodeGenerator.addInstruction("OPR", "15", "0");
codeLine++;
CodeGenerator.addInstruction("JMC", "#label" + lNum, "false");
codeLine++;
} else if (type.equals("HEXIDECIMAL")) {
node = new DefaultMutableTreeNode("hexidecimal(" + name + ")");
nodeP.add(node);
currentToken++;
CodeGenerator.addInstruction("LOD", id, "0");
codeLine++;
CodeGenerator.addInstruction("LIT", name, "0");
codeLine++;
CodeGenerator.addInstruction("OPR", "15", "0");
codeLine++;
CodeGenerator.addInstruction("JMC", "#label" + lNum, "false");
codeLine++;
} else if (type.equals("BINARY")) {
node = new DefaultMutableTreeNode("binary(" + name + ")");
nodeP.add(node);
currentToken++;
CodeGenerator.addInstruction("LOD", id, "0");
codeLine++;
CodeGenerator.addInstruction("LIT", name, "0");
codeLine++;
CodeGenerator.addInstruction("OPR", "15", "0");
codeLine++;
CodeGenerator.addInstruction("JMC", "#label" + lNum, "false");
codeLine++;
}
// else error
if (tokens.get(currentToken).getWord().equals(":")) {
node = new DefaultMutableTreeNode(":");
nodeP.add(node);
currentToken++;
}
rule_program(nodeP);
CodeGenerator.addInstruction("JMP", "#labelES", "0");
codeLine++;
CodeGenerator.addLabel("label" + lNum, codeLine);
lNum++;
} while (tokens.get(currentToken).getWord().equals("case"));
}
