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Move terrascript 2 to separate module

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Astrash committed 2023-10-23 13:28:26 +11:00
1 parent 375f0ba60f
commit 1623a4f958
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+1441 -1495
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common/addons/structure-terrascript-loader-v1/build.gradle.kts
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import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
version = version("1.1.0")
dependencies {
api("commons-io:commons-io:2.7")
compileOnlyApi(project(":common:addons:manifest-addon-loader"))
implementation("net.jafama", "jafama", Versions.Libraries.Internal.jafama)
testImplementation("net.jafama", "jafama", Versions.Libraries.Internal.jafama)
}
tasks.named<ShadowJar>("shadowJar") {
relocate("org.apache.commons", "com.dfsek.terra.addons.terrascript.lib.commons")
relocate("net.jafama", "com.dfsek.terra.addons.terrascript.lib.jafama")
}
common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/TerraScriptAddon.java
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/*
* Copyright (c) 2020-2021 Polyhedral Development
*
* The Terra Core Addons are licensed under the terms of the MIT License. For more details,
* reference the LICENSE file in this module's root directory.
*/
package com.dfsek.terra.addons.terrascript;
import com.dfsek.terra.addons.manifest.api.AddonInitializer;
import com.dfsek.terra.addons.terrascript.parser.exceptions.ParseException;
import com.dfsek.terra.addons.terrascript.parser.lang.functions.FunctionBuilder;
import com.dfsek.terra.addons.terrascript.script.StructureScript;
import com.dfsek.terra.api.Platform;
import com.dfsek.terra.api.addon.BaseAddon;
import com.dfsek.terra.api.event.events.config.pack.ConfigPackPreLoadEvent;
import com.dfsek.terra.api.event.functional.FunctionalEventHandler;
import com.dfsek.terra.api.inject.annotations.Inject;
import com.dfsek.terra.api.registry.CheckedRegistry;
import com.dfsek.terra.api.structure.LootTable;
import com.dfsek.terra.api.structure.Structure;
import com.dfsek.terra.api.util.StringUtil;
public class TerraScriptAddon implements AddonInitializer {
@Inject
private Platform platform;
@Inject
private BaseAddon addon;
@Override
public void initialize() {
platform.getEventManager()
.getHandler(FunctionalEventHandler.class)
.register(addon, ConfigPackPreLoadEvent.class)
.then(event -> {
CheckedRegistry<Structure> structureRegistry = event.getPack().getOrCreateRegistry(Structure.class);
CheckedRegistry<LootTable> lootRegistry = event.getPack().getOrCreateRegistry(LootTable.class);
event.getPack().getLoader().open("", ".tesf").thenEntries(
entries ->
entries.stream()
.parallel()
.map(entry -> {
try {
String id = StringUtil.fileName(entry.getKey());
return new StructureScript(entry.getValue(),
addon.key(id),
platform,
structureRegistry,
lootRegistry,
event.getPack().getOrCreateRegistry(FunctionBuilder.class));
} catch(ParseException e) {
throw new RuntimeException("Failed to load script \"" + entry.getKey() + "\"", e);
}
})
.toList()
.forEach(structureRegistry::register))
.close();
})
.priority(100)
.failThrough();
}
}
common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/parser/Parser.java
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/*
* Copyright (c) 2020-2021 Polyhedral Development
*
* The Terra Core Addons are licensed under the terms of the MIT License. For more details,
* reference the LICENSE file in this module's root directory.
*/
package com.dfsek.terra.addons.terrascript.parser;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.dfsek.terra.addons.terrascript.parser.exceptions.ParseException;
import com.dfsek.terra.addons.terrascript.parser.lang.Block;
import com.dfsek.terra.addons.terrascript.parser.lang.Executable;
import com.dfsek.terra.addons.terrascript.parser.lang.Item;
import com.dfsek.terra.addons.terrascript.parser.lang.Keyword;
import com.dfsek.terra.addons.terrascript.parser.lang.Returnable;
import com.dfsek.terra.addons.terrascript.parser.lang.Returnable.ReturnType;
import com.dfsek.terra.addons.terrascript.parser.lang.Scope.ScopeBuilder;
import com.dfsek.terra.addons.terrascript.parser.lang.constants.BooleanConstant;
import com.dfsek.terra.addons.terrascript.parser.lang.constants.ConstantExpression;
import com.dfsek.terra.addons.terrascript.parser.lang.constants.NumericConstant;
import com.dfsek.terra.addons.terrascript.parser.lang.constants.StringConstant;
import com.dfsek.terra.addons.terrascript.parser.lang.functions.Function;
import com.dfsek.terra.addons.terrascript.parser.lang.functions.FunctionBuilder;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.flow.BreakKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.flow.ContinueKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.flow.FailKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.flow.ReturnKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.looplike.ForKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.looplike.IfKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.looplike.WhileKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.BinaryOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.BooleanAndOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.BooleanNotOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.BooleanOrOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.ConcatenationOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.DivisionOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.ModuloOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.MultiplicationOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.NegationOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.NumberAdditionOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.SubtractionOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.EqualsStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.GreaterOrEqualsThanStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.GreaterThanStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.LessThanOrEqualsStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.LessThanStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.NotEqualsStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.assign.BoolAssignmentNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.assign.NumAssignmentNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.assign.StrAssignmentNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.assign.VariableAssignmentNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.reference.BoolVariableReferenceNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.reference.NumVariableReferenceNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.reference.StrVariableReferenceNode;
import com.dfsek.terra.addons.terrascript.tokenizer.Position;
import com.dfsek.terra.addons.terrascript.tokenizer.Token;
import com.dfsek.terra.addons.terrascript.tokenizer.Tokenizer;
import com.dfsek.terra.api.util.generic.pair.Pair;
@SuppressWarnings("unchecked")
public class Parser {
private final String data;
private final Map<String, FunctionBuilder<? extends Function<?>>> functions = new HashMap<>();
private final List<String> ignoredFunctions = new ArrayList<>();
public Parser(String data) {
this.data = data;
}
public Parser registerFunction(String name, FunctionBuilder<? extends Function<?>> functionBuilder) {
functions.put(name, functionBuilder);
return this;
}
public Parser ignoreFunction(String name) {
ignoredFunctions.add(name);
return this;
}
/**
* Parse input
*
* @return executable {@link Block}
*
* @throws ParseException If parsing fails.
*/
public Executable parse() {
ScopeBuilder scopeBuilder = new ScopeBuilder();
return new Executable(parseBlock(new Tokenizer(data), false, scopeBuilder), scopeBuilder);
}
private Keyword<?> parseLoopLike(Tokenizer tokens, boolean loop, ScopeBuilder scopeBuilder) throws ParseException {
Token identifier = tokens.consume();
ParserUtil.checkType(identifier, Token.Type.IF_STATEMENT, Token.Type.WHILE_LOOP, Token.Type.FOR_LOOP);
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_BEGIN);
return switch(identifier.getType()) {
case FOR_LOOP -> parseForLoop(tokens, identifier.getPosition(), scopeBuilder);
case IF_STATEMENT -> parseIfStatement(tokens, identifier.getPosition(), loop, scopeBuilder);
case WHILE_LOOP -> parseWhileLoop(tokens, identifier.getPosition(), scopeBuilder);
default -> throw new UnsupportedOperationException(
"Unknown keyword " + identifier.getContent() + ": " + identifier.getPosition());
};
}
private WhileKeyword parseWhileLoop(Tokenizer tokens, Position start, ScopeBuilder scopeBuilder) {
Returnable<?> first = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkReturnType(first, Returnable.ReturnType.BOOLEAN);
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_END);
return new WhileKeyword(parseStatementBlock(tokens, true, scopeBuilder), (Returnable<Boolean>) first, start); // While loop
}
private IfKeyword parseIfStatement(Tokenizer tokens, Position start, boolean loop, ScopeBuilder scopeBuilder) {
Returnable<?> condition = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkReturnType(condition, Returnable.ReturnType.BOOLEAN);
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_END);
Block elseBlock = null;
Block statement = parseStatementBlock(tokens, loop, scopeBuilder);
List<Pair<Returnable<Boolean>, Block>> elseIf = new ArrayList<>();
while(tokens.hasNext() && tokens.get().getType().equals(Token.Type.ELSE)) {
tokens.consume(); // Consume else.
if(tokens.get().getType().equals(Token.Type.IF_STATEMENT)) {
tokens.consume(); // Consume if.
Returnable<?> elseCondition = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkReturnType(elseCondition, Returnable.ReturnType.BOOLEAN);
elseIf.add(Pair.of((Returnable<Boolean>) elseCondition, parseStatementBlock(tokens, loop, scopeBuilder)));
} else {
elseBlock = parseStatementBlock(tokens, loop, scopeBuilder);
break; // Else must be last.
}
}
return new IfKeyword(statement, (Returnable<Boolean>) condition, elseIf, elseBlock, start); // If statement
}
private Block parseStatementBlock(Tokenizer tokens, boolean loop, ScopeBuilder scopeBuilder) {
if(tokens.get().getType().equals(Token.Type.BLOCK_BEGIN)) {
ParserUtil.checkType(tokens.consume(), Token.Type.BLOCK_BEGIN);
Block block = parseBlock(tokens, loop, scopeBuilder);
ParserUtil.checkType(tokens.consume(), Token.Type.BLOCK_END);
return block;
} else {
Position position = tokens.get().getPosition();
Block block = new Block(Collections.singletonList(parseItem(tokens, loop, scopeBuilder)), position);
ParserUtil.checkType(tokens.consume(), Token.Type.STATEMENT_END);
return block;
}
}
private ForKeyword parseForLoop(Tokenizer tokens, Position start, ScopeBuilder scopeBuilder) {
scopeBuilder = scopeBuilder.sub(); // new scope
Token f = tokens.get();
ParserUtil.checkType(f, Token.Type.NUMBER_VARIABLE, Token.Type.STRING_VARIABLE, Token.Type.BOOLEAN_VARIABLE, Token.Type.IDENTIFIER);
Item<?> initializer;
if(f.isVariableDeclaration()) {
VariableAssignmentNode<?> forVar = parseVariableDeclaration(tokens, scopeBuilder);
Token name = tokens.get();
if(functions.containsKey(name.getContent()) || scopeBuilder.contains(name.getContent()))
throw new ParseException(name.getContent() + " is already defined in this scope", name.getPosition());
initializer = forVar;
} else initializer = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkType(tokens.consume(), Token.Type.STATEMENT_END);
Returnable<?> conditional = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkReturnType(conditional, Returnable.ReturnType.BOOLEAN);
ParserUtil.checkType(tokens.consume(), Token.Type.STATEMENT_END);
Item<?> incrementer;
Token token = tokens.get();
if(scopeBuilder.contains(token.getContent())) { // Assume variable assignment
incrementer = parseAssignment(tokens, scopeBuilder);
} else incrementer = parseFunction(tokens, true, scopeBuilder);
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_END);
return new ForKeyword(parseStatementBlock(tokens, true, scopeBuilder), initializer, (Returnable<Boolean>) conditional, incrementer,
start);
}
private Returnable<?> parseExpression(Tokenizer tokens, boolean full, ScopeBuilder scopeBuilder) {
boolean booleanInverted = false; // Check for boolean not operator
boolean negate = false;
if(tokens.get().getType().equals(Token.Type.BOOLEAN_NOT)) {
booleanInverted = true;
tokens.consume();
} else if(tokens.get().getType().equals(Token.Type.SUBTRACTION_OPERATOR)) {
negate = true;
tokens.consume();
}
Token id = tokens.get();
ParserUtil.checkType(id, Token.Type.IDENTIFIER, Token.Type.BOOLEAN, Token.Type.STRING, Token.Type.NUMBER, Token.Type.GROUP_BEGIN);
Returnable<?> expression;
if(id.isConstant()) {
expression = parseConstantExpression(tokens);
} else if(id.getType().equals(Token.Type.GROUP_BEGIN)) { // Parse grouped expression
expression = parseGroup(tokens, scopeBuilder);
} else {
if(functions.containsKey(id.getContent()))
expression = parseFunction(tokens, false, scopeBuilder);
else if(scopeBuilder.contains(id.getContent())) {
ParserUtil.checkType(tokens.consume(), Token.Type.IDENTIFIER);
String varId = id.getContent();
ReturnType varType = scopeBuilder.getType(varId);
expression = switch(varType) {
case NUMBER -> new NumVariableReferenceNode(id.getPosition(), varType, scopeBuilder.getIndex(varId));
case STRING -> new StrVariableReferenceNode(id.getPosition(), varType, scopeBuilder.getIndex(varId));
case BOOLEAN -> new BoolVariableReferenceNode(id.getPosition(), varType, scopeBuilder.getIndex(varId));
default -> throw new ParseException("Illegal type for variable reference: " + varType, id.getPosition());
};
} else throw new ParseException("Unexpected token \" " + id.getContent() + "\"", id.getPosition());
}
if(booleanInverted) { // Invert operation if boolean not detected
ParserUtil.checkReturnType(expression, Returnable.ReturnType.BOOLEAN);
expression = new BooleanNotOperation((Returnable<Boolean>) expression, expression.getPosition());
} else if(negate) {
ParserUtil.checkReturnType(expression, Returnable.ReturnType.NUMBER);
expression = new NegationOperation((Returnable<Number>) expression, expression.getPosition());
}
if(full && tokens.get().isBinaryOperator()) { // Parse binary operations
return parseBinaryOperation(expression, tokens, scopeBuilder);
}
return expression;
}
private ConstantExpression<?> parseConstantExpression(Tokenizer tokens) {
Token constantToken = tokens.consume();
Position position = constantToken.getPosition();
switch(constantToken.getType()) {
case NUMBER:
String content = constantToken.getContent();
return new NumericConstant(content.contains(".") ? Double.parseDouble(content) : Integer.parseInt(content), position);
case STRING:
return new StringConstant(constantToken.getContent(), position);
case BOOLEAN:
return new BooleanConstant(Boolean.parseBoolean(constantToken.getContent()), position);
default:
throw new UnsupportedOperationException(
"Unsupported constant token: " + constantToken.getType() + " at position: " + position);
}
}
private Returnable<?> parseGroup(Tokenizer tokens, ScopeBuilder scopeBuilder) {
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_BEGIN);
Returnable<?> expression = parseExpression(tokens, true, scopeBuilder); // Parse inside of group as a separate expression
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_END);
return expression;
}
private BinaryOperation<?, ?> parseBinaryOperation(Returnable<?> left, Tokenizer tokens,
ScopeBuilder scopeBuilder) {
Token binaryOperator = tokens.consume();
ParserUtil.checkBinaryOperator(binaryOperator);
Returnable<?> right = parseExpression(tokens, false, scopeBuilder);
Token other = tokens.get();
if(ParserUtil.hasPrecedence(binaryOperator.getType(), other.getType())) {
return assemble(left, parseBinaryOperation(right, tokens, scopeBuilder), binaryOperator);
} else if(other.isBinaryOperator()) {
return parseBinaryOperation(assemble(left, right, binaryOperator), tokens, scopeBuilder);
}
return assemble(left, right, binaryOperator);
}
private BinaryOperation<?, ?> assemble(Returnable<?> left, Returnable<?> right, Token binaryOperator) {
if(binaryOperator.isStrictNumericOperator())
ParserUtil.checkArithmeticOperation(left, right, binaryOperator); // Numeric type checking
if(binaryOperator.isStrictBooleanOperator()) ParserUtil.checkBooleanOperation(left, right, binaryOperator); // Boolean type checking
switch(binaryOperator.getType()) {
case ADDITION_OPERATOR:
if(left.returnType().equals(Returnable.ReturnType.NUMBER) && right.returnType().equals(Returnable.ReturnType.NUMBER)) {
return new NumberAdditionOperation((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
}
return new ConcatenationOperation((Returnable<Object>) left, (Returnable<Object>) right, binaryOperator.getPosition());
case SUBTRACTION_OPERATOR:
return new SubtractionOperation((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case MULTIPLICATION_OPERATOR:
return new MultiplicationOperation((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case DIVISION_OPERATOR:
return new DivisionOperation((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case EQUALS_OPERATOR:
return new EqualsStatement((Returnable<Object>) left, (Returnable<Object>) right, binaryOperator.getPosition());
case NOT_EQUALS_OPERATOR:
return new NotEqualsStatement((Returnable<Object>) left, (Returnable<Object>) right, binaryOperator.getPosition());
case GREATER_THAN_OPERATOR:
return new GreaterThanStatement((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case LESS_THAN_OPERATOR:
return new LessThanStatement((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case GREATER_THAN_OR_EQUALS_OPERATOR:
return new GreaterOrEqualsThanStatement((Returnable<Number>) left, (Returnable<Number>) right,
binaryOperator.getPosition());
case LESS_THAN_OR_EQUALS_OPERATOR:
return new LessThanOrEqualsStatement((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case BOOLEAN_AND:
return new BooleanAndOperation((Returnable<Boolean>) left, (Returnable<Boolean>) right, binaryOperator.getPosition());
case BOOLEAN_OR:
return new BooleanOrOperation((Returnable<Boolean>) left, (Returnable<Boolean>) right, binaryOperator.getPosition());
case MODULO_OPERATOR:
return new ModuloOperation((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
default:
throw new UnsupportedOperationException("Unsupported binary operator: " + binaryOperator.getType());
}
}
private VariableAssignmentNode<?> parseVariableDeclaration(Tokenizer tokens, ScopeBuilder scopeBuilder) {
Token type = tokens.consume();
ParserUtil.checkType(type, Token.Type.STRING_VARIABLE, Token.Type.BOOLEAN_VARIABLE, Token.Type.NUMBER_VARIABLE);
Returnable.ReturnType returnType = ParserUtil.getVariableReturnType(type);
ParserUtil.checkVarType(type, returnType); // Check for type mismatch
Token identifier = tokens.consume();
ParserUtil.checkType(identifier, Token.Type.IDENTIFIER);
if(functions.containsKey(identifier.getContent()) || scopeBuilder.contains(identifier.getContent()))
throw new ParseException(identifier.getContent() + " is already defined in this scope", identifier.getPosition());
ParserUtil.checkType(tokens.consume(), Token.Type.ASSIGNMENT);
Returnable<?> value = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkReturnType(value, returnType);
String id = identifier.getContent();
return switch(value.returnType()) {
case NUMBER -> new NumAssignmentNode((Returnable<Number>) value, identifier.getPosition(), scopeBuilder.num(id));
case STRING -> new StrAssignmentNode((Returnable<String>) value, identifier.getPosition(), scopeBuilder.str(id));
case BOOLEAN -> new BoolAssignmentNode((Returnable<Boolean>) value, identifier.getPosition(), scopeBuilder.bool(id));
default -> throw new ParseException("Illegal type for variable declaration: " + type, value.getPosition());
};
}
private Block parseBlock(Tokenizer tokens, boolean loop, ScopeBuilder scopeBuilder) {
List<Item<?>> parsedItems = new ArrayList<>();
scopeBuilder = scopeBuilder.sub();
Token first = tokens.get();
while(tokens.hasNext()) {
Token token = tokens.get();
if(token.getType().equals(Token.Type.BLOCK_END)) break; // Stop parsing at block end.
Item<?> parsedItem = parseItem(tokens, loop, scopeBuilder);
if(parsedItem != Function.NULL) {
parsedItems.add(parsedItem);
}
if(tokens.hasNext() && !token.isLoopLike()) ParserUtil.checkType(tokens.consume(), Token.Type.STATEMENT_END);
}
return new Block(parsedItems, first.getPosition());
}
private Item<?> parseItem(Tokenizer tokens, boolean loop, ScopeBuilder scopeBuilder) {
Token token = tokens.get();
if(loop) ParserUtil.checkType(token, Token.Type.IDENTIFIER, Token.Type.IF_STATEMENT, Token.Type.WHILE_LOOP, Token.Type.FOR_LOOP,
Token.Type.NUMBER_VARIABLE, Token.Type.STRING_VARIABLE, Token.Type.BOOLEAN_VARIABLE,
Token.Type.RETURN, Token.Type.BREAK, Token.Type.CONTINUE, Token.Type.FAIL);
else ParserUtil.checkType(token, Token.Type.IDENTIFIER, Token.Type.IF_STATEMENT, Token.Type.WHILE_LOOP, Token.Type.FOR_LOOP,
Token.Type.NUMBER_VARIABLE, Token.Type.STRING_VARIABLE, Token.Type.BOOLEAN_VARIABLE, Token.Type.RETURN,
Token.Type.FAIL);
if(token.isLoopLike()) { // Parse loop-like tokens (if, while, etc)
return parseLoopLike(tokens, loop, scopeBuilder);
} else if(token.isIdentifier()) { // Parse identifiers
if(scopeBuilder.contains(token.getContent())) { // Assume variable assignment
return parseAssignment(tokens, scopeBuilder);
} else return parseFunction(tokens, true, scopeBuilder);
} else if(token.isVariableDeclaration()) {
return parseVariableDeclaration(tokens, scopeBuilder);
} else if(token.getType().equals(Token.Type.RETURN)) return new ReturnKeyword(tokens.consume().getPosition());
else if(token.getType().equals(Token.Type.BREAK)) return new BreakKeyword(tokens.consume().getPosition());
else if(token.getType().equals(Token.Type.CONTINUE)) return new ContinueKeyword(tokens.consume().getPosition());
else if(token.getType().equals(Token.Type.FAIL)) return new FailKeyword(tokens.consume().getPosition());
else throw new UnsupportedOperationException("Unexpected token " + token.getType() + ": " + token.getPosition());
}
private VariableAssignmentNode<?> parseAssignment(Tokenizer tokens, ScopeBuilder scopeBuilder) {
Token identifier = tokens.consume();
ParserUtil.checkType(identifier, Token.Type.IDENTIFIER);
ParserUtil.checkType(tokens.consume(), Token.Type.ASSIGNMENT);
Returnable<?> value = parseExpression(tokens, true, scopeBuilder);
String id = identifier.getContent();
ParserUtil.checkReturnType(value, scopeBuilder.getType(id));
ReturnType type = value.returnType();
return switch(type) {
case NUMBER -> new NumAssignmentNode((Returnable<Number>) value, identifier.getPosition(), scopeBuilder.getIndex(id));
case STRING -> new StrAssignmentNode((Returnable<String>) value, identifier.getPosition(), scopeBuilder.getIndex(id));
case BOOLEAN -> new BoolAssignmentNode((Returnable<Boolean>) value, identifier.getPosition(), scopeBuilder.getIndex(id));
default -> throw new ParseException("Illegal type for variable assignment: " + type, value.getPosition());
};
}
private Function<?> parseFunction(Tokenizer tokens, boolean fullStatement, ScopeBuilder scopeBuilder) {
Token identifier = tokens.consume();
ParserUtil.checkType(identifier, Token.Type.IDENTIFIER); // First token must be identifier
if(!functions.containsKey(identifier.getContent()))
throw new ParseException("No such function \"" + identifier.getContent() + "\"", identifier.getPosition());
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_BEGIN); // Second is body begin
List<Returnable<?>> args = getArgs(tokens, scopeBuilder); // Extract arguments, consume the rest.
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_END); // Remove body end
if(fullStatement) ParserUtil.checkType(tokens.get(), Token.Type.STATEMENT_END);
if(ignoredFunctions.contains(identifier.getContent())) {
return Function.NULL;
}
if(functions.containsKey(identifier.getContent())) {
FunctionBuilder<?> builder = functions.get(identifier.getContent());
if(builder.argNumber() != -1 && args.size() != builder.argNumber())
throw new ParseException("Expected " + builder.argNumber() + " arguments, found " + args.size(), identifier.getPosition());
for(int i = 0; i < args.size(); i++) {
Returnable<?> argument = args.get(i);
if(builder.getArgument(i) == null)
throw new ParseException("Unexpected argument at position " + i + " in function " + identifier.getContent(),
identifier.getPosition());
ParserUtil.checkReturnType(argument, builder.getArgument(i));
}
return builder.build(args, identifier.getPosition());
}
throw new UnsupportedOperationException("Unsupported function: " + identifier.getContent());
}
private List<Returnable<?>> getArgs(Tokenizer tokens, ScopeBuilder scopeBuilder) {
List<Returnable<?>> args = new ArrayList<>();
while(!tokens.get().getType().equals(Token.Type.GROUP_END)) {
args.add(parseExpression(tokens, true, scopeBuilder));
ParserUtil.checkType(tokens.get(), Token.Type.SEPARATOR, Token.Type.GROUP_END);
if(tokens.get().getType().equals(Token.Type.SEPARATOR)) tokens.consume();
}
return args;
}
}
common/addons/structure-terrascript-loader/build.gradle.kts
+1 -231
View File
@@ -4,8 +4,6 @@ version = version("1.1.0")
dependencies {
api("commons-io:commons-io:2.7")
api("org.ow2.asm:asm:9.5")
api("org.ow2.asm:asm-commons:9.5")
compileOnlyApi(project(":common:addons:manifest-addon-loader"))
implementation("net.jafama", "jafama", Versions.Libraries.Internal.jafama)
testImplementation("net.jafama", "jafama", Versions.Libraries.Internal.jafama)
@@ -14,232 +12,4 @@ dependencies {
tasks.named<ShadowJar>("shadowJar") {
relocate("org.apache.commons", "com.dfsek.terra.addons.terrascript.lib.commons")
relocate("net.jafama", "com.dfsek.terra.addons.terrascript.lib.jafama")
}
val astSourceSet = buildDir.resolve("generated/ast")
val astPackage = astSourceSet.resolve("com/dfsek/terra/addons/terrascript/ast")
data class ASTClass(
val name: String,
val imports: List<String>,
val nodes: List<ASTNode>,
val constructorFields: List<Pair<String, String>> = emptyList(),
)
data class ASTNode(
val name: String,
val constructorFields: List<Pair<String, String>>,
val mutableFields: List<Pair<String, String>> = emptyList() // TODO - Remove mutability from AST nodes
)
// Auto generate AST classes rather than writing them by hand
tasks.register("genTerrascriptAstClasses") {
val packageName = astPackage.toRelativeString(astSourceSet).replace('/', '.')
fun generateClass(clazz: ASTClass) {
val src = StringBuilder()
src.appendLine("package $packageName;\n");
for (imprt in clazz.imports) src.appendLine("import $imprt;")
src.appendLine("""
/**
* Auto-generated class via genTerrascriptAstClasses gradle task
*/
public abstract class ${clazz.name} {
""".trimIndent())
for (field in clazz.constructorFields) {
src.appendLine(" public final ${field.second} ${field.first};")
}
src.appendLine("""
|
| public ${clazz.name}(${clazz.constructorFields.joinToString { "${it.second} ${it.first}" }}) {
""".trimMargin())
for (field in clazz.constructorFields) {
src.appendLine(" this.${field.first} = ${field.first};")
}
src.appendLine("""
| }
|
| public interface Visitor<R> {
|
""".trimMargin())
for (node in clazz.nodes) {
src.appendLine(" R visit${node.name}${clazz.name}(${node.name} ${clazz.name.toLowerCase()});")
}
src.appendLine("""
|
| }
|
| public abstract <R> R accept(Visitor<R> visitor);
""".trimMargin())
for (node in clazz.nodes) {
src.appendLine()
// Inner class declaration
src.appendLine(" public static class ${node.name} extends ${clazz.name} {\n")
// Add fields
for (field in node.constructorFields) {
src.appendLine(" public final ${field.second} ${field.first};")
}
for (field in node.mutableFields) {
src.appendLine(" private ${field.second} ${field.first};")
}
src.appendLine()
// Add constructor
src.appendLine("""
| public ${node.name}(${node.constructorFields.plus(clazz.constructorFields).joinToString { "${it.second} ${it.first}" }}) {
| super(${clazz.constructorFields.joinToString { it.first }});
""".trimMargin())
for (field in node.constructorFields) {
src.appendLine(" this.${field.first} = ${field.first};")
}
src.appendLine(" }")
// Add getters and setters for mutable fields
for (field in node.mutableFields) {
src.appendLine("""
|
| public void set${field.first.capitalize()}(${field.second} value) {
| this.${field.first} = value;
| }
|
| public ${field.second} get${field.first.capitalize()}() {
| if (this.${field.first} == null) throw new RuntimeException("Compilation bug! Field ${field.first} has not been set yet");
| return this.${field.first};
| }
""".trimMargin())
}
src.appendLine("""
|
| @Override
| public <R> R accept(Visitor<R> visitor) {
| return visitor.visit${node.name}${clazz.name}(this);
| }
| }
""".trimMargin())
}
src.appendLine("}")
val outputFile = astPackage.resolve("${clazz.name}.java")
outputFile.writeText(src.toString())
}
doLast {
astSourceSet.deleteRecursively()
astPackage.mkdirs()
listOf(
ASTClass(
"Expr",
listOf(
"com.dfsek.terra.addons.terrascript.Type",
"com.dfsek.terra.addons.terrascript.parser.UnaryOperator",
"com.dfsek.terra.addons.terrascript.parser.BinaryOperator",
"com.dfsek.terra.addons.terrascript.Environment",
"com.dfsek.terra.addons.terrascript.Environment.Symbol",
"com.dfsek.terra.addons.terrascript.lexer.SourcePosition",
"java.util.List",
),
listOf(
ASTNode("Binary", listOf("left" to "Expr", "operator" to "BinaryOperator", "right" to "Expr")),
ASTNode("Grouping", listOf("expression" to "Expr")),
ASTNode("Literal", listOf("value" to "Object", "type" to "Type")),
ASTNode("Unary", listOf("operator" to "UnaryOperator", "operand" to "Expr")),
ASTNode("Call", listOf("identifier" to "String", "arguments" to "List<Expr>"), listOf("environment" to "Environment", "symbol" to "Symbol.Function")),
ASTNode("Variable", listOf("identifier" to "String"), listOf("symbol" to "Symbol.Variable")),
ASTNode("Assignment", listOf("lValue" to "Variable", "rValue" to "Expr")),
ASTNode("Void", listOf()),
),
listOf("position" to "SourcePosition")
),
ASTClass(
"Stmt",
listOf(
"com.dfsek.terra.addons.terrascript.Type",
"com.dfsek.terra.api.util.generic.pair.Pair",
"com.dfsek.terra.addons.terrascript.Environment.Symbol",
"com.dfsek.terra.addons.terrascript.lexer.SourcePosition",
"java.util.List",
"java.util.Optional",
),
listOf(
ASTNode("Expression", listOf("expression" to "Expr")),
ASTNode("Block", listOf("statements" to "List<Stmt>")),
ASTNode("FunctionDeclaration", listOf("identifier" to "String", "parameters" to "List<Pair<String, Type>>", "returnType" to "Type", "body" to "Block"), listOf("symbol" to "Symbol.Function")),
ASTNode("VariableDeclaration", listOf("type" to "Type", "identifier" to "String", "value" to "Expr")),
ASTNode("Return", listOf("value" to "Expr"), listOf("type" to "Type")),
ASTNode("If", listOf("condition" to "Expr", "trueBody" to "Block", "elseIfClauses" to "List<Pair<Expr, Block>>", "elseBody" to "Optional<Block>")),
ASTNode("For", listOf("initializer" to "Stmt", "condition" to "Expr", "incrementer" to "Expr", "body" to "Block")),
ASTNode("While", listOf("condition" to "Expr", "body" to "Block")),
ASTNode("NoOp", listOf()),
ASTNode("Break", listOf()),
ASTNode("Continue", listOf()),
),
listOf("position" to "SourcePosition")
),
ASTClass(
"TypedExpr",
listOf(
"com.dfsek.terra.addons.terrascript.Type",
"com.dfsek.terra.addons.terrascript.parser.UnaryOperator",
"com.dfsek.terra.addons.terrascript.parser.BinaryOperator",
"java.util.List",
),
listOf(
ASTNode("Binary", listOf("left" to "TypedExpr", "operator" to "BinaryOperator", "right" to "TypedExpr")),
ASTNode("Grouping", listOf("expression" to "TypedExpr")),
ASTNode("Literal", listOf("value" to "Object")),
ASTNode("Unary", listOf("operator" to "UnaryOperator", "operand" to "TypedExpr")),
ASTNode("Call", listOf("identifier" to "String", "arguments" to "List<TypedExpr>", "scopedIdentifier" to "String")),
ASTNode("Variable", listOf("identifier" to "String")),
ASTNode("Assignment", listOf("lValue" to "Variable", "rValue" to "TypedExpr")),
ASTNode("Void", listOf()),
),
listOf("type" to "Type")
),
ASTClass(
"TypedStmt",
listOf(
"com.dfsek.terra.addons.terrascript.Type",
"com.dfsek.terra.api.util.generic.pair.Pair",
"java.util.List",
"java.util.Optional",
),
listOf(
ASTNode("Expression", listOf("expression" to "TypedExpr")),
ASTNode("Block", listOf("statements" to "List<TypedStmt>")),
ASTNode("FunctionDeclaration", listOf("identifier" to "String", "parameters" to "List<Pair<String, Type>>", "returnType" to "Type", "body" to "Block", "scopedIdentifier" to "String")),
ASTNode("VariableDeclaration", listOf("type" to "Type", "identifier" to "String", "value" to "TypedExpr")),
ASTNode("Return", listOf("value" to "TypedExpr")),
ASTNode("If", listOf("condition" to "TypedExpr", "trueBody" to "Block", "elseIfClauses" to "List<Pair<TypedExpr, Block>>", "elseBody" to "Optional<Block>")),
ASTNode("For", listOf("initializer" to "TypedStmt", "condition" to "TypedExpr", "incrementer" to "TypedExpr", "body" to "Block")),
ASTNode("While", listOf("condition" to "TypedExpr", "body" to "Block")),
ASTNode("NoOp", listOf()),
ASTNode("Break", listOf()),
ASTNode("Continue", listOf()),
),
),
).forEach(::generateClass)
}
}
tasks.getByName("compileJava") {
dependsOn("genTerrascriptAstClasses")
}
sourceSets.getByName("main") {
java {
srcDirs(astSourceSet)
}
}
}
common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/TerraScriptAddon.java
+3 -4
View File
@@ -8,6 +8,9 @@
package com.dfsek.terra.addons.terrascript;
import com.dfsek.terra.addons.manifest.api.AddonInitializer;
import com.dfsek.terra.addons.terrascript.parser.exceptions.ParseException;
import com.dfsek.terra.addons.terrascript.parser.lang.functions.FunctionBuilder;
import com.dfsek.terra.addons.terrascript.script.StructureScript;
import com.dfsek.terra.api.Platform;
import com.dfsek.terra.api.addon.BaseAddon;
import com.dfsek.terra.api.event.events.config.pack.ConfigPackPreLoadEvent;
@@ -28,14 +31,12 @@ public class TerraScriptAddon implements AddonInitializer {
@Override
public void initialize() {
platform.getEventManager()
.getHandler(FunctionalEventHandler.class)
.register(addon, ConfigPackPreLoadEvent.class)
.then(event -> {
CheckedRegistry<Structure> structureRegistry = event.getPack().getOrCreateRegistry(Structure.class);
CheckedRegistry<LootTable> lootRegistry = event.getPack().getOrCreateRegistry(LootTable.class);
/*
event.getPack().getLoader().open("", ".tesf").thenEntries(
entries ->
entries.stream()
@@ -56,8 +57,6 @@ public class TerraScriptAddon implements AddonInitializer {
.toList()
.forEach(structureRegistry::register))
.close();
*/
})
.priority(100)
.failThrough();
common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/exception/semanticanalysis/IdentifierAlreadyDeclaredException.java
-11
View File
@@ -1,11 +0,0 @@
package com.dfsek.terra.addons.terrascript.exception.semanticanalysis;
import com.dfsek.terra.addons.terrascript.exception.CompilationException;
import com.dfsek.terra.addons.terrascript.lexer.SourcePosition;
public class IdentifierAlreadyDeclaredException extends CompilationException {
public IdentifierAlreadyDeclaredException(String message, SourcePosition position) {
super(message, position);
}
}
common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/exception/semanticanalysis/InvalidFunctionDeclarationException.java
-11
View File
@@ -1,11 +0,0 @@
package com.dfsek.terra.addons.terrascript.exception.semanticanalysis;
import com.dfsek.terra.addons.terrascript.exception.CompilationException;
import com.dfsek.terra.addons.terrascript.lexer.SourcePosition;
public class InvalidFunctionDeclarationException extends CompilationException {
public InvalidFunctionDeclarationException(String message, SourcePosition position) {
super(message, position);
}
}
common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/exception/semanticanalysis/InvalidTypeException.java
-11
View File
@@ -1,11 +0,0 @@
package com.dfsek.terra.addons.terrascript.exception.semanticanalysis;
import com.dfsek.terra.addons.terrascript.exception.CompilationException;
import com.dfsek.terra.addons.terrascript.lexer.SourcePosition;
public class InvalidTypeException extends CompilationException {
public InvalidTypeException(String message, SourcePosition position) {
super(message, position);
}
}
common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/exception/semanticanalysis/UndefinedReferenceException.java
-11
View File
@@ -1,11 +0,0 @@
package com.dfsek.terra.addons.terrascript.exception.semanticanalysis;
import com.dfsek.terra.addons.terrascript.exception.CompilationException;
import com.dfsek.terra.addons.terrascript.lexer.SourcePosition;
public class UndefinedReferenceException extends CompilationException {
public UndefinedReferenceException(String message, SourcePosition position) {
super(message, position);
}
}
common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/parser/BinaryOperator.java
-25
View File
@@ -1,25 +0,0 @@
package com.dfsek.terra.addons.terrascript.parser;
import com.dfsek.terra.addons.terrascript.lexer.Token.TokenType;
public enum BinaryOperator {
BOOLEAN_OR(TokenType.BOOLEAN_OR),
BOOLEAN_AND(TokenType.BOOLEAN_AND),
EQUALS(TokenType.EQUALS_EQUALS),
NOT_EQUALS(TokenType.BANG_EQUALS),
GREATER(TokenType.GREATER),
GREATER_EQUALS(TokenType.GREATER_EQUAL),
LESS(TokenType.LESS),
LESS_EQUALS(TokenType.LESS_EQUALS),
ADD(TokenType.PLUS),
SUBTRACT(TokenType.MINUS),
MULTIPLY(TokenType.STAR),
DIVIDE(TokenType.FORWARD_SLASH),
MODULO(TokenType.MODULO_OPERATOR);
public final TokenType tokenType;
BinaryOperator(TokenType tokenType) { this.tokenType = tokenType; }
}
common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/parser/Parser.java
+412 -323
View File
@@ -1,379 +1,468 @@
/*
* Copyright (c) 2020-2021 Polyhedral Development
*
* The Terra Core Addons are licensed under the terms of the MIT License. For more details,
* reference the LICENSE file in this module's root directory.
*/
package com.dfsek.terra.addons.terrascript.parser;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.function.Supplier;
import java.util.Map;
import com.dfsek.terra.addons.terrascript.Type;
import com.dfsek.terra.addons.terrascript.Type.TypeException;
import com.dfsek.terra.addons.terrascript.ast.Expr;
import com.dfsek.terra.addons.terrascript.ast.Expr.Variable;
import com.dfsek.terra.addons.terrascript.ast.Stmt;
import com.dfsek.terra.addons.terrascript.ast.Stmt.Block;
import com.dfsek.terra.addons.terrascript.lexer.SourcePosition;
import com.dfsek.terra.addons.terrascript.lexer.Token;
import com.dfsek.terra.addons.terrascript.lexer.Token.TokenType;
import com.dfsek.terra.addons.terrascript.parser.exceptions.ParseException;
import com.dfsek.terra.addons.terrascript.parser.lang.Block;
import com.dfsek.terra.addons.terrascript.parser.lang.Executable;
import com.dfsek.terra.addons.terrascript.parser.lang.Item;
import com.dfsek.terra.addons.terrascript.parser.lang.Keyword;
import com.dfsek.terra.addons.terrascript.parser.lang.Returnable;
import com.dfsek.terra.addons.terrascript.parser.lang.Returnable.ReturnType;
import com.dfsek.terra.addons.terrascript.parser.lang.Scope.ScopeBuilder;
import com.dfsek.terra.addons.terrascript.parser.lang.constants.BooleanConstant;
import com.dfsek.terra.addons.terrascript.parser.lang.constants.ConstantExpression;
import com.dfsek.terra.addons.terrascript.parser.lang.constants.NumericConstant;
import com.dfsek.terra.addons.terrascript.parser.lang.constants.StringConstant;
import com.dfsek.terra.addons.terrascript.parser.lang.functions.Function;
import com.dfsek.terra.addons.terrascript.parser.lang.functions.FunctionBuilder;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.flow.BreakKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.flow.ContinueKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.flow.FailKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.flow.ReturnKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.looplike.ForKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.looplike.IfKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.keywords.looplike.WhileKeyword;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.BinaryOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.BooleanAndOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.BooleanNotOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.BooleanOrOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.ConcatenationOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.DivisionOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.ModuloOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.MultiplicationOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.NegationOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.NumberAdditionOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.SubtractionOperation;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.EqualsStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.GreaterOrEqualsThanStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.GreaterThanStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.LessThanOrEqualsStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.LessThanStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.operations.statements.NotEqualsStatement;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.assign.BoolAssignmentNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.assign.NumAssignmentNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.assign.StrAssignmentNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.assign.VariableAssignmentNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.reference.BoolVariableReferenceNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.reference.NumVariableReferenceNode;
import com.dfsek.terra.addons.terrascript.parser.lang.variables.reference.StrVariableReferenceNode;
import com.dfsek.terra.addons.terrascript.tokenizer.Position;
import com.dfsek.terra.addons.terrascript.tokenizer.Token;
import com.dfsek.terra.addons.terrascript.tokenizer.Tokenizer;
import com.dfsek.terra.api.util.generic.pair.Pair;
/**
* TerraScript recursive descent parser
*/
@SuppressWarnings("unchecked")
public class Parser {
private final String data;
private final Map<String, FunctionBuilder<? extends Function<?>>> functions = new HashMap<>();
private final List<String> ignoredFunctions = new ArrayList<>();
private final List<Token> tokens;
private int index = 0;
private Parser(List<Token> tokens) {
if(tokens.stream().noneMatch(t -> t.isType(TokenType.END_OF_FILE)))
throw new IllegalArgumentException("Token list must contain at least one token of type " + TokenType.END_OF_FILE);
this.tokens = tokens;
public Parser(String data) {
this.data = data;
}
public static Block parse(List<Token> tokens) {
return new Parser(tokens).parseTokens();
public Parser registerFunction(String name, FunctionBuilder<? extends Function<?>> functionBuilder) {
functions.put(name, functionBuilder);
return this;
}
private Block parseTokens() {
List<Stmt> statements = new ArrayList<>();
while(hasNext()) {
statements.add(statement());
}
if(hasNext()) throw new ParseException("Tokens were remaining after parsing", current().position());
return new Stmt.Block(statements, new SourcePosition(0, 0));
public Parser ignoreFunction(String name) {
ignoredFunctions.add(name);
return this;
}
private Token current() {
return tokens.get(index);
/**
* Parse input
*
* @return executable {@link Block}
*
* @throws ParseException If parsing fails.
*/
public Executable parse() {
ScopeBuilder scopeBuilder = new ScopeBuilder();
return new Executable(parseBlock(new Tokenizer(data), false, scopeBuilder), scopeBuilder);
}
private boolean hasNext() {
return !current().isType(TokenType.END_OF_FILE);
}
private Token consume(String wrongTypeMessage, TokenType expected, TokenType... more) {
if(!current().isType(expected) && Arrays.stream(more).noneMatch(t -> t == current().type())) throw new ParseException(
wrongTypeMessage, current().position());
return consumeUnchecked();
}
public Token consumeUnchecked() {
if(!hasNext()) return current();
Token temp = current();
index++;
return temp;
}
private void consumeStatementEnd(String after) {
consume("Expected ';' after " + after + ", found '" + current().lexeme() + "'", TokenType.STATEMENT_END);
}
private Stmt statement() {
return switch(current().type()) {
case BLOCK_BEGIN -> block();
case FUNCTION -> functionDeclaration();
case VARIABLE -> variableDeclaration();
case RETURN -> returnStmt();
case IF_STATEMENT -> ifStmt();
case FOR_LOOP -> forLoop();
case WHILE_LOOP -> whileLoop();
case BREAK -> breakStmt();
case CONTINUE -> continueStmt();
case STATEMENT_END -> new Stmt.NoOp(consumeUnchecked().position());
default -> expressionStatement();
private Keyword<?> parseLoopLike(Tokenizer tokens, boolean loop, ScopeBuilder scopeBuilder) throws ParseException {
Token identifier = tokens.consume();
ParserUtil.checkType(identifier, Token.Type.IF_STATEMENT, Token.Type.WHILE_LOOP, Token.Type.FOR_LOOP);
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_BEGIN);
return switch(identifier.getType()) {
case FOR_LOOP -> parseForLoop(tokens, identifier.getPosition(), scopeBuilder);
case IF_STATEMENT -> parseIfStatement(tokens, identifier.getPosition(), loop, scopeBuilder);
case WHILE_LOOP -> parseWhileLoop(tokens, identifier.getPosition(), scopeBuilder);
default -> throw new UnsupportedOperationException(
"Unknown keyword " + identifier.getContent() + ": " + identifier.getPosition());
};
}
private Stmt functionDeclaration() {
SourcePosition position = consume("Expected 'fun' keyword at start of function declaration", TokenType.FUNCTION).position();
String id = consume("Expected identifier after 'fun' keyword for function declaration", TokenType.IDENTIFIER).lexeme();
consume("Expected '(' after function identifier '" + id + "'", TokenType.OPEN_PAREN);
private WhileKeyword parseWhileLoop(Tokenizer tokens, Position start, ScopeBuilder scopeBuilder) {
Returnable<?> first = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkReturnType(first, Returnable.ReturnType.BOOLEAN);
// Parse parameters
List<Pair<String, Type>> params = new ArrayList<>();
while(!current().isType(TokenType.CLOSE_PAREN)) {
Token paramToken = consume("Expected parameter name or ')', found '" + current().lexeme() + "'", TokenType.IDENTIFIER);
String paramId = paramToken.lexeme();
if(params.stream().anyMatch(p -> Objects.equals(p.getLeft(), paramId)))
throw new ParseException("Parameter '" + paramId + "' has already been declared in function '" + id + "'",
paramToken.position());
consume("Expected type declaration after parameter name. Example: '" + paramId + ": <type>'", TokenType.COLON);
Type paramType = typeExpr();
params.add(Pair.of(paramId, paramType));
if(current().isType(TokenType.CLOSE_PAREN)) break;
consume("Expected ',' or ')' after parameter declaration '" + paramId + "' in function '" + id + "'", TokenType.SEPARATOR);
}
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_END);
Type funcReturn = Type.VOID;
consume("Expected ')' after " + (params.size() == 0 ? "')'" : "parameters") + " in declaration of function '" + id + "'",
TokenType.CLOSE_PAREN);
if(current().isType(TokenType.COLON)) {
consumeUnchecked();
funcReturn = typeExpr();
}
Stmt.Block body = blockOrSingleStatement();
return new Stmt.FunctionDeclaration(id, params, funcReturn, body, position);
return new WhileKeyword(parseStatementBlock(tokens, true, scopeBuilder), (Returnable<Boolean>) first, start); // While loop
}
private Stmt.VariableDeclaration variableDeclaration() {
SourcePosition position = consume("Expected 'var' keyword at start of variable declaration", TokenType.VARIABLE).position();
String id = consume("Expected variable name after type for variable declaration", TokenType.IDENTIFIER).lexeme();
consume("Expected ':' after variable name", TokenType.COLON);
Type type = typeExpr();
consume("Expected '=' following variable type declaration", TokenType.ASSIGNMENT);
Expr expr = expression();
consumeStatementEnd("variable declaration");
private IfKeyword parseIfStatement(Tokenizer tokens, Position start, boolean loop, ScopeBuilder scopeBuilder) {
Returnable<?> condition = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkReturnType(condition, Returnable.ReturnType.BOOLEAN);
return new Stmt.VariableDeclaration(type, id, expr, position);
}
private Type typeExpr() {
Token typeToken = consume("Expected " + TokenType.IDENTIFIER + " specified as variable type", TokenType.IDENTIFIER);
try {
return Type.fromString(typeToken.lexeme());
} catch(TypeException e) {
throw new ParseException("Failed to parse type expression", typeToken.position());
}
}
private Stmt.Return returnStmt() {
SourcePosition position = consume("Expected 'return' keyword, found '" + current().lexeme() + "'", TokenType.RETURN).position();
Expr value = new Expr.Void(position);
if(!current().isType(TokenType.STATEMENT_END))
value = expression();
consumeStatementEnd("return statement");
return new Stmt.Return(value, position);
}
private Stmt.If ifStmt() {
// Parse main if clause
SourcePosition position = consume("Expected 'if' keyword at beginning of if statement", TokenType.IF_STATEMENT).position();
consume("Expected '(' after 'if' keyword", TokenType.OPEN_PAREN);
Expr condition = expression();
consume("Expected ')' after if statement condition", TokenType.CLOSE_PAREN);
Stmt.Block trueBody = blockOrSingleStatement();
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_END);
// Parse any else clauses
Stmt.Block elseBody = null;
List<Pair<Expr, Stmt.Block>> elseIfClauses = new ArrayList<>();
while(current().isType(TokenType.ELSE)) {
consumeUnchecked(); // Consume else
if(!current().isType(TokenType.IF_STATEMENT)) {
elseBody = blockOrSingleStatement();
break; // Else clause should be last in if statement
Block elseBlock = null;
Block statement = parseStatementBlock(tokens, loop, scopeBuilder);
List<Pair<Returnable<Boolean>, Block>> elseIf = new ArrayList<>();
while(tokens.hasNext() && tokens.get().getType().equals(Token.Type.ELSE)) {
tokens.consume(); // Consume else.
if(tokens.get().getType().equals(Token.Type.IF_STATEMENT)) {
tokens.consume(); // Consume if.
Returnable<?> elseCondition = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkReturnType(elseCondition, Returnable.ReturnType.BOOLEAN);
elseIf.add(Pair.of((Returnable<Boolean>) elseCondition, parseStatementBlock(tokens, loop, scopeBuilder)));
} else {
elseBlock = parseStatementBlock(tokens, loop, scopeBuilder);
break; // Else must be last.
}
consumeUnchecked(); // Consume if
consume("Expected '(' after 'else if', e.g. 'if else (<condition>) ...'", TokenType.OPEN_PAREN);
Expr elseIfCondition = expression();
consume("Expected ')' after 'else if' clause, e.g. 'else if (<condition>) ...'", TokenType.CLOSE_PAREN);
Stmt.Block elseIfBody = blockOrSingleStatement();
elseIfClauses.add(Pair.of(elseIfCondition, elseIfBody));
}
return new Stmt.If(condition, trueBody, elseIfClauses, Optional.ofNullable(elseBody), position);
return new IfKeyword(statement, (Returnable<Boolean>) condition, elseIf, elseBlock, start); // If statement
}
private Stmt.For forLoop() {
SourcePosition position = consume("Expected 'for' keyword at beginning of for loop", TokenType.FOR_LOOP).position();
consume("Expected '(' after 'for' keyword", TokenType.OPEN_PAREN);
Stmt initializer = statement();
Expr condition;
if(current().isType(TokenType.STATEMENT_END)) {
condition = new Expr.Literal(true, Type.BOOLEAN,
current().position()); // If no condition is provided, set condition = true
consumeUnchecked();
private Block parseStatementBlock(Tokenizer tokens, boolean loop, ScopeBuilder scopeBuilder) {
if(tokens.get().getType().equals(Token.Type.BLOCK_BEGIN)) {
ParserUtil.checkType(tokens.consume(), Token.Type.BLOCK_BEGIN);
Block block = parseBlock(tokens, loop, scopeBuilder);
ParserUtil.checkType(tokens.consume(), Token.Type.BLOCK_END);
return block;
} else {
condition = expression();
consumeStatementEnd("loop condition");
Position position = tokens.get().getPosition();
Block block = new Block(Collections.singletonList(parseItem(tokens, loop, scopeBuilder)), position);
ParserUtil.checkType(tokens.consume(), Token.Type.STATEMENT_END);
return block;
}
Expr incrementer;
if(current().isType(TokenType.CLOSE_PAREN)) {
incrementer = null;
consumeUnchecked();
}
private ForKeyword parseForLoop(Tokenizer tokens, Position start, ScopeBuilder scopeBuilder) {
scopeBuilder = scopeBuilder.sub(); // new scope
Token f = tokens.get();
ParserUtil.checkType(f, Token.Type.NUMBER_VARIABLE, Token.Type.STRING_VARIABLE, Token.Type.BOOLEAN_VARIABLE, Token.Type.IDENTIFIER);
Item<?> initializer;
if(f.isVariableDeclaration()) {
VariableAssignmentNode<?> forVar = parseVariableDeclaration(tokens, scopeBuilder);
Token name = tokens.get();
if(functions.containsKey(name.getContent()) || scopeBuilder.contains(name.getContent()))
throw new ParseException(name.getContent() + " is already defined in this scope", name.getPosition());
initializer = forVar;
} else initializer = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkType(tokens.consume(), Token.Type.STATEMENT_END);
Returnable<?> conditional = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkReturnType(conditional, Returnable.ReturnType.BOOLEAN);
ParserUtil.checkType(tokens.consume(), Token.Type.STATEMENT_END);
Item<?> incrementer;
Token token = tokens.get();
if(scopeBuilder.contains(token.getContent())) { // Assume variable assignment
incrementer = parseAssignment(tokens, scopeBuilder);
} else incrementer = parseFunction(tokens, true, scopeBuilder);
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_END);
return new ForKeyword(parseStatementBlock(tokens, true, scopeBuilder), initializer, (Returnable<Boolean>) conditional, incrementer,
start);
}
private Returnable<?> parseExpression(Tokenizer tokens, boolean full, ScopeBuilder scopeBuilder) {
boolean booleanInverted = false; // Check for boolean not operator
boolean negate = false;
if(tokens.get().getType().equals(Token.Type.BOOLEAN_NOT)) {
booleanInverted = true;
tokens.consume();
} else if(tokens.get().getType().equals(Token.Type.SUBTRACTION_OPERATOR)) {
negate = true;
tokens.consume();
}
Token id = tokens.get();
ParserUtil.checkType(id, Token.Type.IDENTIFIER, Token.Type.BOOLEAN, Token.Type.STRING, Token.Type.NUMBER, Token.Type.GROUP_BEGIN);
Returnable<?> expression;
if(id.isConstant()) {
expression = parseConstantExpression(tokens);
} else if(id.getType().equals(Token.Type.GROUP_BEGIN)) { // Parse grouped expression
expression = parseGroup(tokens, scopeBuilder);
} else {
incrementer = expression();
consume("Expected ')' after for loop incrementer", TokenType.CLOSE_PAREN);
if(functions.containsKey(id.getContent()))
expression = parseFunction(tokens, false, scopeBuilder);
else if(scopeBuilder.contains(id.getContent())) {
ParserUtil.checkType(tokens.consume(), Token.Type.IDENTIFIER);
String varId = id.getContent();
ReturnType varType = scopeBuilder.getType(varId);
expression = switch(varType) {
case NUMBER -> new NumVariableReferenceNode(id.getPosition(), varType, scopeBuilder.getIndex(varId));
case STRING -> new StrVariableReferenceNode(id.getPosition(), varType, scopeBuilder.getIndex(varId));
case BOOLEAN -> new BoolVariableReferenceNode(id.getPosition(), varType, scopeBuilder.getIndex(varId));
default -> throw new ParseException("Illegal type for variable reference: " + varType, id.getPosition());
};
} else throw new ParseException("Unexpected token \" " + id.getContent() + "\"", id.getPosition());
}
Stmt.Block body = blockOrSingleStatement();
return new Stmt.For(initializer, condition, incrementer, body, position);
}
private Stmt.While whileLoop() {
SourcePosition position = consume("Expected 'for' keyword at beginning of while loop", TokenType.WHILE_LOOP).position();
consume("Expected '(' after 'while' keyword", TokenType.OPEN_PAREN);
Expr condition = expression();
consume("Expected ')' after while loop condition", TokenType.CLOSE_PAREN);
Stmt.Block body = blockOrSingleStatement();
return new Stmt.While(condition, body, position);
}
private Stmt.Break breakStmt() {
SourcePosition position = consume("Expected 'break' keyword for break statement", TokenType.BREAK).position();
consumeStatementEnd("'break' keyword");
return new Stmt.Break(position);
}
private Stmt.Continue continueStmt() {
SourcePosition position = consume("Expected 'continue' keyword for continue statement", TokenType.CONTINUE).position();
consumeStatementEnd("'continue' keyword");
return new Stmt.Continue(position);
}
private Stmt.Block blockOrSingleStatement() {
if(!current().isType(TokenType.BLOCK_BEGIN)) return new Stmt.Block(List.of(statement()), current().position());
return block();
}
private Stmt.Block block() {
SourcePosition position = consume("Expected '{' at start of block", TokenType.BLOCK_BEGIN).position();
List<Stmt> statements = new ArrayList<>();
while(!current().isType(TokenType.BLOCK_END)) {
statements.add(statement());
if(booleanInverted) { // Invert operation if boolean not detected
ParserUtil.checkReturnType(expression, Returnable.ReturnType.BOOLEAN);
expression = new BooleanNotOperation((Returnable<Boolean>) expression, expression.getPosition());
} else if(negate) {
ParserUtil.checkReturnType(expression, Returnable.ReturnType.NUMBER);
expression = new NegationOperation((Returnable<Number>) expression, expression.getPosition());
}
consume("Expected '}' at end of block", TokenType.BLOCK_END);
return new Stmt.Block(statements, position);
if(full && tokens.get().isBinaryOperator()) { // Parse binary operations
return parseBinaryOperation(expression, tokens, scopeBuilder);
}
return expression;
}
private Stmt expressionStatement() {
Expr expression = expression();
consumeStatementEnd("expression statement");
return new Stmt.Expression(expression, expression.position);
private ConstantExpression<?> parseConstantExpression(Tokenizer tokens) {
Token constantToken = tokens.consume();
Position position = constantToken.getPosition();
switch(constantToken.getType()) {
case NUMBER:
String content = constantToken.getContent();
return new NumericConstant(content.contains(".") ? Double.parseDouble(content) : Integer.parseInt(content), position);
case STRING:
return new StringConstant(constantToken.getContent(), position);
case BOOLEAN:
return new BooleanConstant(Boolean.parseBoolean(constantToken.getContent()), position);
default:
throw new UnsupportedOperationException(
"Unsupported constant token: " + constantToken.getType() + " at position: " + position);
}
}
private Expr expression() {
return assignment();
private Returnable<?> parseGroup(Tokenizer tokens, ScopeBuilder scopeBuilder) {
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_BEGIN);
Returnable<?> expression = parseExpression(tokens, true, scopeBuilder); // Parse inside of group as a separate expression
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_END);
return expression;
}
private Expr leftAssociativeBinaryExpression(Supplier<Expr> higherPrecedence, BinaryOperator... operators) {
Expr expr = higherPrecedence.get();
loop:
while(true) {
for(BinaryOperator operator : operators) {
if(current().isType(operator.tokenType)) {
SourcePosition position = consumeUnchecked().position(); // Consume operator token
expr = new Expr.Binary(expr, operator, higherPrecedence.get(), position);
continue loop;
private BinaryOperation<?, ?> parseBinaryOperation(Returnable<?> left, Tokenizer tokens,
ScopeBuilder scopeBuilder) {
Token binaryOperator = tokens.consume();
ParserUtil.checkBinaryOperator(binaryOperator);
Returnable<?> right = parseExpression(tokens, false, scopeBuilder);
Token other = tokens.get();
if(ParserUtil.hasPrecedence(binaryOperator.getType(), other.getType())) {
return assemble(left, parseBinaryOperation(right, tokens, scopeBuilder), binaryOperator);
} else if(other.isBinaryOperator()) {
return parseBinaryOperation(assemble(left, right, binaryOperator), tokens, scopeBuilder);
}
return assemble(left, right, binaryOperator);
}
private BinaryOperation<?, ?> assemble(Returnable<?> left, Returnable<?> right, Token binaryOperator) {
if(binaryOperator.isStrictNumericOperator())
ParserUtil.checkArithmeticOperation(left, right, binaryOperator); // Numeric type checking
if(binaryOperator.isStrictBooleanOperator()) ParserUtil.checkBooleanOperation(left, right, binaryOperator); // Boolean type checking
switch(binaryOperator.getType()) {
case ADDITION_OPERATOR:
if(left.returnType().equals(Returnable.ReturnType.NUMBER) && right.returnType().equals(Returnable.ReturnType.NUMBER)) {
return new NumberAdditionOperation((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
}
}
break; // Break if not any operator
return new ConcatenationOperation((Returnable<Object>) left, (Returnable<Object>) right, binaryOperator.getPosition());
case SUBTRACTION_OPERATOR:
return new SubtractionOperation((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case MULTIPLICATION_OPERATOR:
return new MultiplicationOperation((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case DIVISION_OPERATOR:
return new DivisionOperation((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case EQUALS_OPERATOR:
return new EqualsStatement((Returnable<Object>) left, (Returnable<Object>) right, binaryOperator.getPosition());
case NOT_EQUALS_OPERATOR:
return new NotEqualsStatement((Returnable<Object>) left, (Returnable<Object>) right, binaryOperator.getPosition());
case GREATER_THAN_OPERATOR:
return new GreaterThanStatement((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case LESS_THAN_OPERATOR:
return new LessThanStatement((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case GREATER_THAN_OR_EQUALS_OPERATOR:
return new GreaterOrEqualsThanStatement((Returnable<Number>) left, (Returnable<Number>) right,
binaryOperator.getPosition());
case LESS_THAN_OR_EQUALS_OPERATOR:
return new LessThanOrEqualsStatement((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
case BOOLEAN_AND:
return new BooleanAndOperation((Returnable<Boolean>) left, (Returnable<Boolean>) right, binaryOperator.getPosition());
case BOOLEAN_OR:
return new BooleanOrOperation((Returnable<Boolean>) left, (Returnable<Boolean>) right, binaryOperator.getPosition());
case MODULO_OPERATOR:
return new ModuloOperation((Returnable<Number>) left, (Returnable<Number>) right, binaryOperator.getPosition());
default:
throw new UnsupportedOperationException("Unsupported binary operator: " + binaryOperator.getType());
}
return expr;
}
private Expr rightAssociativeBinaryExpression(Supplier<Expr> higherPrecedence, BinaryOperator... operators) {
Expr expr = higherPrecedence.get();
for(BinaryOperator operator : operators) {
if(current().isType(operator.tokenType)) {
SourcePosition position = consumeUnchecked().position(); // Consume operator token
return new Expr.Binary(expr, operator, rightAssociativeBinaryExpression(higherPrecedence, operators), position);
}
}
return expr;
}
private Expr assignment() {
Expr expr = logicOr();
if(current().isType(TokenType.ASSIGNMENT)) {
SourcePosition position = consumeUnchecked().position(); // Consume operator token
if(!(expr instanceof Variable variable)) throw new ParseException("Invalid assignment target", position);
return new Expr.Assignment(variable, assignment(), position);
}
return expr;
}
private Expr logicOr() {
return leftAssociativeBinaryExpression(this::logicAnd, BinaryOperator.BOOLEAN_OR);
}
private Expr logicAnd() {
return leftAssociativeBinaryExpression(this::equality, BinaryOperator.BOOLEAN_AND);
}
private Expr equality() {
return leftAssociativeBinaryExpression(this::comparison, BinaryOperator.EQUALS, BinaryOperator.NOT_EQUALS);
}
private Expr comparison() {
return leftAssociativeBinaryExpression(this::term, BinaryOperator.GREATER, BinaryOperator.GREATER_EQUALS, BinaryOperator.LESS,
BinaryOperator.LESS_EQUALS);
}
private Expr term() {
return leftAssociativeBinaryExpression(this::factor, BinaryOperator.ADD, BinaryOperator.SUBTRACT);
}
private Expr factor() {
return leftAssociativeBinaryExpression(this::unary, BinaryOperator.MULTIPLY, BinaryOperator.DIVIDE, BinaryOperator.MODULO);
}
private Expr unary() {
UnaryOperator[] operators = { UnaryOperator.NOT, UnaryOperator.NEGATE };
for(UnaryOperator operator : operators) {
if(current().isType(operator.tokenType)) {
SourcePosition position = consumeUnchecked().position();
return new Expr.Unary(operator, unary(), position);
}
}
return primary();
}
private Expr primary() {
Token token = consumeUnchecked();
SourcePosition position = token.position();
return switch(token.type()) {
case NUMBER -> new Expr.Literal(Double.parseDouble(token.lexeme()), Type.NUMBER, position);
case STRING -> new Expr.Literal(token.lexeme(), Type.STRING, position);
case BOOLEAN -> new Expr.Literal(Boolean.parseBoolean(token.lexeme()), Type.BOOLEAN, position);
case IDENTIFIER -> {
if(current().isType(TokenType.OPEN_PAREN)) yield call(token);
else yield variable(token);
}
case OPEN_PAREN -> {
if(current().isType(TokenType.CLOSE_PAREN)) {
consumeUnchecked(); // Consume ')'
yield new Expr.Void(position); // () evaluates to void
}
Expr expr = expression();
consume("Expected ')' to close '(' located at " + position, TokenType.CLOSE_PAREN);
yield new Expr.Grouping(expr, position);
}
default -> throw new ParseException("Unexpected token '" + token.lexeme() + "'", position);
private VariableAssignmentNode<?> parseVariableDeclaration(Tokenizer tokens, ScopeBuilder scopeBuilder) {
Token type = tokens.consume();
ParserUtil.checkType(type, Token.Type.STRING_VARIABLE, Token.Type.BOOLEAN_VARIABLE, Token.Type.NUMBER_VARIABLE);
Returnable.ReturnType returnType = ParserUtil.getVariableReturnType(type);
ParserUtil.checkVarType(type, returnType); // Check for type mismatch
Token identifier = tokens.consume();
ParserUtil.checkType(identifier, Token.Type.IDENTIFIER);
if(functions.containsKey(identifier.getContent()) || scopeBuilder.contains(identifier.getContent()))
throw new ParseException(identifier.getContent() + " is already defined in this scope", identifier.getPosition());
ParserUtil.checkType(tokens.consume(), Token.Type.ASSIGNMENT);
Returnable<?> value = parseExpression(tokens, true, scopeBuilder);
ParserUtil.checkReturnType(value, returnType);
String id = identifier.getContent();
return switch(value.returnType()) {
case NUMBER -> new NumAssignmentNode((Returnable<Number>) value, identifier.getPosition(), scopeBuilder.num(id));
case STRING -> new StrAssignmentNode((Returnable<String>) value, identifier.getPosition(), scopeBuilder.str(id));
case BOOLEAN -> new BoolAssignmentNode((Returnable<Boolean>) value, identifier.getPosition(), scopeBuilder.bool(id));
default -> throw new ParseException("Illegal type for variable declaration: " + type, value.getPosition());
};
}
private Expr call(Token identifier) {
String id = identifier.lexeme();
SourcePosition position = consume("Expected '(' to initiate function call on function '" + id + "'",
TokenType.OPEN_PAREN).position();
private Block parseBlock(Tokenizer tokens, boolean loop, ScopeBuilder scopeBuilder) {
List<Item<?>> parsedItems = new ArrayList<>();
List<Expr> args = new ArrayList<>();
while(!current().isType(TokenType.CLOSE_PAREN)) {
args.add(expression());
if(current().isType(TokenType.CLOSE_PAREN)) break;
consume("Expected ',' or ')' after passed argument in function call of '" + id + "'", TokenType.SEPARATOR);
scopeBuilder = scopeBuilder.sub();
Token first = tokens.get();
while(tokens.hasNext()) {
Token token = tokens.get();
if(token.getType().equals(Token.Type.BLOCK_END)) break; // Stop parsing at block end.
Item<?> parsedItem = parseItem(tokens, loop, scopeBuilder);
if(parsedItem != Function.NULL) {
parsedItems.add(parsedItem);
}
if(tokens.hasNext() && !token.isLoopLike()) ParserUtil.checkType(tokens.consume(), Token.Type.STATEMENT_END);
}
return new Block(parsedItems, first.getPosition());
}
private Item<?> parseItem(Tokenizer tokens, boolean loop, ScopeBuilder scopeBuilder) {
Token token = tokens.get();
if(loop) ParserUtil.checkType(token, Token.Type.IDENTIFIER, Token.Type.IF_STATEMENT, Token.Type.WHILE_LOOP, Token.Type.FOR_LOOP,
Token.Type.NUMBER_VARIABLE, Token.Type.STRING_VARIABLE, Token.Type.BOOLEAN_VARIABLE,
Token.Type.RETURN, Token.Type.BREAK, Token.Type.CONTINUE, Token.Type.FAIL);
else ParserUtil.checkType(token, Token.Type.IDENTIFIER, Token.Type.IF_STATEMENT, Token.Type.WHILE_LOOP, Token.Type.FOR_LOOP,
Token.Type.NUMBER_VARIABLE, Token.Type.STRING_VARIABLE, Token.Type.BOOLEAN_VARIABLE, Token.Type.RETURN,
Token.Type.FAIL);
if(token.isLoopLike()) { // Parse loop-like tokens (if, while, etc)
return parseLoopLike(tokens, loop, scopeBuilder);
} else if(token.isIdentifier()) { // Parse identifiers
if(scopeBuilder.contains(token.getContent())) { // Assume variable assignment
return parseAssignment(tokens, scopeBuilder);
} else return parseFunction(tokens, true, scopeBuilder);
} else if(token.isVariableDeclaration()) {
return parseVariableDeclaration(tokens, scopeBuilder);
} else if(token.getType().equals(Token.Type.RETURN)) return new ReturnKeyword(tokens.consume().getPosition());
else if(token.getType().equals(Token.Type.BREAK)) return new BreakKeyword(tokens.consume().getPosition());
else if(token.getType().equals(Token.Type.CONTINUE)) return new ContinueKeyword(tokens.consume().getPosition());
else if(token.getType().equals(Token.Type.FAIL)) return new FailKeyword(tokens.consume().getPosition());
else throw new UnsupportedOperationException("Unexpected token " + token.getType() + ": " + token.getPosition());
}
private VariableAssignmentNode<?> parseAssignment(Tokenizer tokens, ScopeBuilder scopeBuilder) {
Token identifier = tokens.consume();
ParserUtil.checkType(identifier, Token.Type.IDENTIFIER);
ParserUtil.checkType(tokens.consume(), Token.Type.ASSIGNMENT);
Returnable<?> value = parseExpression(tokens, true, scopeBuilder);
String id = identifier.getContent();
ParserUtil.checkReturnType(value, scopeBuilder.getType(id));
ReturnType type = value.returnType();
return switch(type) {
case NUMBER -> new NumAssignmentNode((Returnable<Number>) value, identifier.getPosition(), scopeBuilder.getIndex(id));
case STRING -> new StrAssignmentNode((Returnable<String>) value, identifier.getPosition(), scopeBuilder.getIndex(id));
case BOOLEAN -> new BoolAssignmentNode((Returnable<Boolean>) value, identifier.getPosition(), scopeBuilder.getIndex(id));
default -> throw new ParseException("Illegal type for variable assignment: " + type, value.getPosition());
};
}
private Function<?> parseFunction(Tokenizer tokens, boolean fullStatement, ScopeBuilder scopeBuilder) {
Token identifier = tokens.consume();
ParserUtil.checkType(identifier, Token.Type.IDENTIFIER); // First token must be identifier
if(!functions.containsKey(identifier.getContent()))
throw new ParseException("No such function \"" + identifier.getContent() + "\"", identifier.getPosition());
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_BEGIN); // Second is body begin
List<Returnable<?>> args = getArgs(tokens, scopeBuilder); // Extract arguments, consume the rest.
ParserUtil.checkType(tokens.consume(), Token.Type.GROUP_END); // Remove body end
if(fullStatement) ParserUtil.checkType(tokens.get(), Token.Type.STATEMENT_END);
if(ignoredFunctions.contains(identifier.getContent())) {
return Function.NULL;
}
consume("Expected ')' after " + (args.size() == 0 ? "')'" : "arguments") + " in function call of '" + id + "'",
TokenType.CLOSE_PAREN);
if(functions.containsKey(identifier.getContent())) {
FunctionBuilder<?> builder = functions.get(identifier.getContent());
if(builder.argNumber() != -1 && args.size() != builder.argNumber())
throw new ParseException("Expected " + builder.argNumber() + " arguments, found " + args.size(), identifier.getPosition());
for(int i = 0; i < args.size(); i++) {
Returnable<?> argument = args.get(i);
if(builder.getArgument(i) == null)
throw new ParseException("Unexpected argument at position " + i + " in function " + identifier.getContent(),
identifier.getPosition());
ParserUtil.checkReturnType(argument, builder.getArgument(i));
}
return builder.build(args, identifier.getPosition());
}
throw new UnsupportedOperationException("Unsupported function: " + identifier.getContent());
}
private List<Returnable<?>> getArgs(Tokenizer tokens, ScopeBuilder scopeBuilder) {
List<Returnable<?>> args = new ArrayList<>();
return new Expr.Call(id, args, position);
while(!tokens.get().getType().equals(Token.Type.GROUP_END)) {
args.add(parseExpression(tokens, true, scopeBuilder));
ParserUtil.checkType(tokens.get(), Token.Type.SEPARATOR, Token.Type.GROUP_END);
if(tokens.get().getType().equals(Token.Type.SEPARATOR)) tokens.consume();
}
return args;
}
private Expr variable(Token identifier) {
return new Expr.Variable(identifier.lexeme(), identifier.position());
}
}
common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/parser/ParserUtil.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/parser/ParserUtil.java
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File renamed without changes.
common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/parser/UnaryOperator.java
-13
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@@ -1,13 +0,0 @@
package com.dfsek.terra.addons.terrascript.parser;
import com.dfsek.terra.addons.terrascript.lexer.Token.TokenType;
public enum UnaryOperator {
NOT(TokenType.BANG),
NEGATE(TokenType.MINUS);
public final TokenType tokenType;
UnaryOperator(TokenType tokenType) { this.tokenType = tokenType; }
}
common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/parser/exceptions/ParseException.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/parser/exceptions/ParseException.java
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File renamed without changes.
common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/parser/lang/Block.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/parser/lang/Block.java
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File renamed without changes.
common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/parser/lang/Executable.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/parser/lang/Executable.java
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File renamed without changes.
common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/parser/lang/ImplementationArguments.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/parser/lang/ImplementationArguments.java
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common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/parser/lang/Item.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/parser/lang/Item.java
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common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/script/TerraImplementationArguments.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/script/TerraImplementationArguments.java
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common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/script/functions/SetMarkFunction.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/script/functions/SetMarkFunction.java
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common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/script/functions/StateFunction.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/script/functions/StateFunction.java
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common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/script/functions/StructureFunction.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/script/functions/StructureFunction.java
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common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/tokenizer/Char.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/tokenizer/Char.java
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common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/tokenizer/Lookahead.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/tokenizer/Lookahead.java
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common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/tokenizer/Position.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/tokenizer/Position.java
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common/addons/structure-terrascript-loader-v1/src/main/java/com/dfsek/terra/addons/terrascript/tokenizer/Token.java → common/addons/structure-terrascript-loader/src/main/java/com/dfsek/terra/addons/terrascript/tokenizer/Token.java
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