diff --git a/src/main/java/org/jcnc/snow/compiler/Main.java b/src/main/java/org/jcnc/snow/compiler/Main.java index ab9fd7b..2faec3c 100644 --- a/src/main/java/org/jcnc/snow/compiler/Main.java +++ b/src/main/java/org/jcnc/snow/compiler/Main.java @@ -1,34 +1,25 @@ +// File: org/jcnc/snow/compiler/Main.java package org.jcnc.snow.compiler; + import org.jcnc.snow.compiler.lexer.LexerEngine; -import org.jcnc.snow.compiler.lexer.token.Token; -import org.jcnc.snow.compiler.parser.ast.ASTModule; -import org.jcnc.snow.compiler.parser.utils.ASTPrinter; -import org.jcnc.snow.compiler.parser.ParserEngine; +import org.jcnc.snow.compiler.lexer.utils.TokenPrinter; import java.io.IOException; import java.nio.charset.StandardCharsets; import java.nio.file.Files; import java.nio.file.Path; -import java.util.List; public class Main { public static void main(String[] args) throws IOException { - // 1. 读文件 + // 如果命令行中提供了文件名，就读取该文件；否则默认读取当前目录下的 "opcode" 文件 String filePath = args.length > 0 ? args[0] : "test"; + String source = Files.readString(Path.of(filePath), StandardCharsets.UTF_8); - - // 2. 词法分析 - LexerEngine lexer = new LexerEngine(source); - List tokens = lexer.getAllTokens(); - - // 3. 语法分析 - ParserEngine parser = new ParserEngine(tokens); - ASTModule moduleAst = parser.parseModule(); - - // 4. 使用 AST - System.out.println("解析成功，模块名：" + moduleAst.getName()); - ASTPrinter.print(moduleAst); - + // 词法分析 + LexerEngine lexerEngine = new LexerEngine(source); + // 打印所有 Token + TokenPrinter.printTokens(lexerEngine.getAllTokens()); } + } diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ASTExpression.java b/src/main/java/org/jcnc/snow/compiler/parser/ASTExpression.java deleted file mode 100644 index 0a76af5..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ASTExpression.java +++ /dev/null @@ -1,21 +0,0 @@ -package org.jcnc.snow.compiler.parser; - -/** - * 抽象表达式节点基类。所有具体的表达式类型（如标识符、字面量、 - * 二元运算等）都应继承此类，以便在语法树中统一表示表达式。 - * - *

子类示例： - *

- * - *

在解析过程中，parseExpression 方法会创建具体的 ASTExpression 实例。 - * 后续阶段（如语义分析、代码生成）可通过 instanceof 或 Visitor 模式对 - * 不同子类进行处理。 - * - */ -public abstract class ASTExpression { - // 该类仅作为标记类型，不包含公共字段或方法 -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ASTNode.java b/src/main/java/org/jcnc/snow/compiler/parser/ASTNode.java deleted file mode 100644 index 1e585c5..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ASTNode.java +++ /dev/null @@ -1,4 +0,0 @@ -package org.jcnc.snow.compiler.parser; - -// ----------------- AST 节点定义 ----------------- -public abstract class ASTNode {} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ASTStatement.java b/src/main/java/org/jcnc/snow/compiler/parser/ASTStatement.java deleted file mode 100644 index 57c6f28..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ASTStatement.java +++ /dev/null @@ -1,15 +0,0 @@ -package org.jcnc.snow.compiler.parser; - -/** - * 抽象语句节点基类。所有语法树中的语句类型（如声明、返回、循环、条件等） - * 都应继承自此类，以便在解析器和后续处理（如语义分析、生成代码） - * 中统一识别和处理。 - * - *

ASTStatement 继承自 ASTNode，包含共通的节点属性和方法。 - * 具体子类需要实现各自的构造器及特定字段，并根据需要重写 - * Visitor 模式或其他遍历/处理逻辑。 - * - * @see ASTNode - */ -public abstract class ASTStatement extends ASTNode { -} \ No newline at end of file diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ParserEngine.java b/src/main/java/org/jcnc/snow/compiler/parser/ParserEngine.java deleted file mode 100644 index 2111d35..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ParserEngine.java +++ /dev/null @@ -1,318 +0,0 @@ -package org.jcnc.snow.compiler.parser; - -import org.jcnc.snow.compiler.lexer.token.Token; -import org.jcnc.snow.compiler.lexer.token.TokenType; -import org.jcnc.snow.compiler.parser.ast.*; - -import java.util.ArrayList; -import java.util.List; - -/** - * 递归下降解析器，用于解析模块、函数、语句和表达式，并生成相应的AST节点。 - * - *

使用给定的词法分析器生成的令牌序列，对语法结构进行逐步匹配和构建。 - * 提供对模块(module)、函数(function)、参数(parameter)、声明(declare)、循环(loop)、 - * 条件(if)、返回(return)以及二元表达式的支持。 - * - *

抛出ASTBinaryOp.ParseException以报告解析错误。 - */ -public class ParserEngine { - /** 令牌序列 */ - private final List tokens; - /** 当前处理的令牌位置 */ - private int pos = 0; - - /** - * 构造函数，初始化解析器。 - * - * @param tokens 由词法分析器生成的令牌列表 - */ - public ParserEngine(List tokens) { - this.tokens = tokens; - } - - /** - * 解析整个模块结构，包含模块名和函数定义列表。 - * - * 

-     * module: 模块开始标记
-     * IDENTIFIER: 模块名称
-     * end module: 模块结束标记
-     *
- * - * @return 构建好的ASTModule节点 - * @throws ASTBinaryOp.ParseException 当解析过程中出现不匹配或意外令牌时抛出 - */ - public ASTModule parseModule() { - match(TokenType.KEYWORD, "module"); - match(TokenType.COLON); - String moduleName = current().getLexeme(); - match(TokenType.IDENTIFIER); - match(TokenType.NEWLINE); - - ASTModule module = new ASTModule(moduleName); - while (!peek(TokenType.KEYWORD, "end")) { - module.addFunction(parseFunction()); - } - - match(TokenType.KEYWORD, "end"); - match(TokenType.KEYWORD, "module"); - match(TokenType.NEWLINE); - return module; - } - - /** - * 解析函数定义，包括参数列表、返回类型和函数体。 - * - * 
-     * function: 函数开始标记
-     * parameter (可选): 参数声明块
-     * return_type: 返回类型
-     * body: 函数体语句
-     * end function: 函数结束标记
-     *
- * - * @return 构建好的ASTFunction节点 - * @throws ASTBinaryOp.ParseException 当解析过程中出现不匹配或意外令牌时抛出 - */ - private ASTFunction parseFunction() { - match(TokenType.KEYWORD, "function"); - match(TokenType.COLON); - String funcName = current().getLexeme(); - match(TokenType.IDENTIFIER); - match(TokenType.NEWLINE); - - ASTFunction fn = new ASTFunction(funcName); - if (peek(TokenType.KEYWORD, "parameter")) { - match(TokenType.KEYWORD, "parameter"); - match(TokenType.COLON); - match(TokenType.NEWLINE); - while (peek(TokenType.KEYWORD, "declare")) { - fn.addParameter(parseParameter()); - } - } - - match(TokenType.KEYWORD, "return_type"); - match(TokenType.COLON); - String returnType = current().getLexeme(); - match(TokenType.TYPE); - match(TokenType.NEWLINE); - fn.setReturnType(returnType); - - match(TokenType.KEYWORD, "body"); - match(TokenType.COLON); - match(TokenType.NEWLINE); - while (!peek(TokenType.KEYWORD, "end")) { - fn.addStatement(parseStatement()); - } - match(TokenType.KEYWORD, "end"); - match(TokenType.KEYWORD, "body"); - match(TokenType.NEWLINE); - - match(TokenType.KEYWORD, "end"); - match(TokenType.KEYWORD, "function"); - match(TokenType.NEWLINE); - return fn; - } - - /** - * 解析单个参数声明。 - * - * 
-     * declare IDENTIFIER:type
-     *
- * - * @return 构建好的ASTParameter节点 - * @throws ASTBinaryOp.ParseException 当解析过程中出现不匹配或意外令牌时抛出 - */ - private ASTParameter parseParameter() { - match(TokenType.KEYWORD, "declare"); - String name = current().getLexeme(); - match(TokenType.IDENTIFIER); - match(TokenType.COLON); - String type = current().getLexeme(); - match(TokenType.TYPE); - match(TokenType.NEWLINE); - return new ASTParameter(name, type); - } - - /** - * 解析一条语句，根据关键字分发到不同的解析器。 - * 支持return、declare、loop和if语句。 - * - * @return 对应的ASTStatement子类实例 - * @throws ASTBinaryOp.ParseException 当无法识别语句类型时抛出 - */ - private ASTStatement parseStatement() { - if (peek(TokenType.KEYWORD, "return")) { - return parseReturn(); - } else if (peek(TokenType.KEYWORD, "declare")) { - return parseDeclare(); - } else if (peek(TokenType.KEYWORD, "loop")) { - return parseLoop(); - } else if (peek(TokenType.KEYWORD, "if")) { - return parseIf(); - } - throw new ASTBinaryOp.ParseException("无法识别的语句：" + current()); - } - - /** - * 解析return语句。 - * - * @return 构建好的ASTReturn节点，包含返回的表达式 - */ - private ASTReturn parseReturn() { - match(TokenType.KEYWORD, "return"); - ASTExpression expr = parseExpression(); - match(TokenType.NEWLINE); - return new ASTReturn(expr); - } - - /** - * 解析声明语句，可选带初始化表达式。 - * - * @return 构建好的ASTDeclare节点，若无初始化则init为null - */ - private ASTDeclare parseDeclare() { - match(TokenType.KEYWORD, "declare"); - String name = current().getLexeme(); match(TokenType.IDENTIFIER); - match(TokenType.COLON); - String type = current().getLexeme(); match(TokenType.TYPE); - if (peek(TokenType.EQUALS)) { - match(TokenType.EQUALS); - ASTExpression init = parseExpression(); - match(TokenType.NEWLINE); - return new ASTDeclare(name, type, init); - } else { - match(TokenType.NEWLINE); - return new ASTDeclare(name, type, null); - } - } - - /** - * 解析循环语句，包含初始化、条件、更新和循环体。 - * - * @return 构建好的ASTLoop节点 - */ - private ASTLoop parseLoop() { - match(TokenType.KEYWORD, "loop"); match(TokenType.COLON); - match(TokenType.NEWLINE); - match(TokenType.KEYWORD, "initializer"); match(TokenType.COLON); match(TokenType.NEWLINE); - ASTDeclare init = parseDeclare(); - match(TokenType.KEYWORD, "condition"); match(TokenType.COLON); match(TokenType.NEWLINE); - ASTExpression cond = parseExpression(); match(TokenType.NEWLINE); - match(TokenType.KEYWORD, "update"); match(TokenType.COLON); match(TokenType.NEWLINE); - ASTDeclare update = parseDeclare(); - match(TokenType.KEYWORD, "body"); match(TokenType.COLON); match(TokenType.NEWLINE); - List stmts = new ArrayList<>(); - while (!peek(TokenType.KEYWORD, "end")) { - stmts.add(parseStatement()); - } - match(TokenType.KEYWORD, "end"); match(TokenType.KEYWORD, "body"); match(TokenType.NEWLINE); - match(TokenType.KEYWORD, "end"); match(TokenType.KEYWORD, "loop"); match(TokenType.NEWLINE); - return new ASTLoop(init, cond, update, stmts); - } - - /** - * 解析条件语句，仅支持单分支if。 - * - * @return 构建好的ASTIf节点 - */ - private ASTIf parseIf() { - match(TokenType.KEYWORD, "if"); - ASTExpression cond = parseExpression(); - match(TokenType.KEYWORD, "then"); match(TokenType.NEWLINE); - List thenStmts = new ArrayList<>(); - while (!peek(TokenType.KEYWORD, "end")) { - thenStmts.add(parseStatement()); - } - match(TokenType.KEYWORD, "end"); match(TokenType.KEYWORD, "if"); match(TokenType.NEWLINE); - return new ASTIf(cond, thenStmts); - } - - /** - * 解析表达式，支持标识符、整数字面量和加减乘除二元运算。 - * 实现左递归消除，通过递归调用构建二元运算树。 - * - * @return 构建好的ASTExpression子类实例 - * @throws ASTBinaryOp.ParseException 当遇到意外令牌时抛出 - */ - private ASTExpression parseExpression() { - ASTExpression left; - Token t = current(); - if (t.getType() == TokenType.IDENTIFIER) { - left = new ASTIdentifier(t.getLexeme()); pos++; - } else if (t.getType() == TokenType.NUMBER_LITERAL) { - left = new ASTLiteral(Integer.parseInt(t.getLexeme())); pos++; - } else { - throw new ASTBinaryOp.ParseException("表达式解析错误，意外的令牌：" + t); - } - // 处理二元运算符 - Token opTok = current(); - String lex = opTok.getLexeme(); - if (opTok.getType() == TokenType.PLUS - || opTok.getType() == TokenType.MINUS - || opTok.getType() == TokenType.MULTIPLY - || lex.equals("/")) { - String op = lex; - pos++; - ASTExpression right = parseExpression(); - return new ASTBinaryOp(left, op, right); - } - return left; - } - - // 工具方法 - /** - * 获取当前令牌，如果超出范围则抛出异常。 - * - * @return 当前Token - * @throws ASTBinaryOp.ParseException 当访问越界时抛出 - */ - private Token current() { - if (pos >= tokens.size()) throw new ASTBinaryOp.ParseException("超出令牌范围"); - return tokens.get(pos); - } - - /** - * 判断当前令牌类型是否匹配。 - * - * @param type 期望的TokenType - * @return 匹配返回true，否则false - */ - private boolean peek(TokenType type) { - return current().getType() == type; - } - - /** - * 判断当前令牌类型和词法是否与期望匹配。 - * - * @param type 期望的TokenType - * @param lexeme 期望的词法串 - * @return 匹配返回true，否则false - */ - private boolean peek(TokenType type, String lexeme) { - return peek(type) && current().getLexeme().equals(lexeme); - } - - /** - * 强制匹配当前令牌类型，如果不匹配则抛出异常。 - * - * @param type 期望的TokenType - * @throws ASTBinaryOp.ParseException 当不匹配时抛出，包含错误信息 - */ - private void match(TokenType type) { - if (peek(type)) pos++; else throw new ASTBinaryOp.ParseException("期望 " + type + " 但找到 " + current()); - } - - /** - * 强制匹配当前令牌类型和词法，如果不匹配则抛出异常。 - * - * @param type 期望的TokenType - * @param lexeme 期望的词法串 - * @throws ASTBinaryOp.ParseException 当不匹配时抛出，包含错误信息 - */ - private void match(TokenType type, String lexeme) { - if (peek(type, lexeme)) pos++; else throw new ASTBinaryOp.ParseException("期望 '" + lexeme + "' 但找到 " + current()); - } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTBinaryOp.java b/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTBinaryOp.java deleted file mode 100644 index f114403..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTBinaryOp.java +++ /dev/null @@ -1,82 +0,0 @@ -package org.jcnc.snow.compiler.parser.ast; - -import org.jcnc.snow.compiler.parser.ASTExpression; - -/** - * 表示一个二元运算表达式节点（例如加法、减法、乘法、除法）。 - * 在 AST 中，该节点有一个左子表达式、一个运算符和一个右子表达式。 - */ -public class ASTBinaryOp extends ASTExpression { - /** - * 左侧操作数表达式。 - */ - private final ASTExpression left; - - /** - * 运算符字符串（如 "+", "-", "*", "/"）。 - */ - private final String op; - - /** - * 右侧操作数表达式。 - */ - private final ASTExpression right; - - /** - * 构造一个二元运算节点。 - * - * @param left 左侧子表达式，不得为 {@code null} - * @param op 运算符文本，例如 "+"、"-"、"*"、"/" - * @param right 右侧子表达式，不得为 {@code null} - * @throws IllegalArgumentException 如果 {@code left} 或 {@code right} 为 {@code null} - */ - public ASTBinaryOp(ASTExpression left, String op, ASTExpression right) { - if (left == null || right == null) { - throw new IllegalArgumentException("左右表达式都必须非空"); - } - this.left = left; - this.op = op; - this.right = right; - } - - /** - * 获取左侧子表达式。 - * - * @return 左侧的 {@link ASTExpression} 节点 - */ - public ASTExpression getLeft() { - return left; - } - - /** - * 获取二元运算符。 - * - * @return 运算符字符串，如 "+"、"-" 等 - */ - public String getOperator() { - return op; - } - - /** - * 获取右侧子表达式。 - * - * @return 右侧的 {@link ASTExpression} 节点 - */ - public ASTExpression getRight() { - return right; - } - - /** - * 在解析过程中遇到语法错误时抛出此异常。 - */ - public static class ParseException extends RuntimeException { - /** - * 使用指定的错误消息构造一个解析异常。 - * - * @param msg 错误描述 - */ - public ParseException(String msg) { - super(msg); - } - } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTDeclare.java b/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTDeclare.java deleted file mode 100644 index 9e39ada..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTDeclare.java +++ /dev/null @@ -1,15 +0,0 @@ -package org.jcnc.snow.compiler.parser.ast; - -import org.jcnc.snow.compiler.parser.ASTExpression; -import org.jcnc.snow.compiler.parser.ASTStatement; - -public class ASTDeclare extends ASTStatement { - final String name, type; - final ASTExpression init; - public ASTDeclare(String name, String type, ASTExpression init) { - this.name = name; this.type = type; this.init = init; - } - public String getName() { return name; } - public String getType() { return type; } - public ASTExpression getInitExpression() { return init; } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTFunction.java b/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTFunction.java deleted file mode 100644 index ffb2abd..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTFunction.java +++ /dev/null @@ -1,22 +0,0 @@ -package org.jcnc.snow.compiler.parser.ast; - -import org.jcnc.snow.compiler.parser.ASTNode; -import org.jcnc.snow.compiler.parser.ASTStatement; - -import java.util.ArrayList; -import java.util.List; - -public class ASTFunction extends ASTNode { - private final String name; - private String returnType; - private final List params = new ArrayList<>(); - private final List body = new ArrayList<>(); - public ASTFunction(String name) { this.name = name; } - public void addParameter(ASTParameter p) { params.add(p); } - public void setReturnType(String t) { this.returnType = t; } - public void addStatement(ASTStatement stmt) { body.add(stmt); } - public String getName() { return name; } - public String getReturnType() { return returnType; } - public List getParameters() { return params; } - public List getBody() { return body; } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTIdentifier.java b/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTIdentifier.java deleted file mode 100644 index f0ce4d9..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTIdentifier.java +++ /dev/null @@ -1,9 +0,0 @@ -package org.jcnc.snow.compiler.parser.ast; - -import org.jcnc.snow.compiler.parser.ASTExpression; - -public class ASTIdentifier extends ASTExpression { - final String name; - public ASTIdentifier(String name) { this.name = name; } - public String getName() { return name; } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTIf.java b/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTIf.java deleted file mode 100644 index 2991a70..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTIf.java +++ /dev/null @@ -1,16 +0,0 @@ -package org.jcnc.snow.compiler.parser.ast; - -import org.jcnc.snow.compiler.parser.ASTExpression; -import org.jcnc.snow.compiler.parser.ASTStatement; - -import java.util.List; - -public class ASTIf extends ASTStatement { - final ASTExpression condition; - final List thenStmts; - public ASTIf(ASTExpression condition, List thenStmts) { - this.condition = condition; this.thenStmts = thenStmts; - } - public ASTExpression getCondition() { return condition; } - public List getThenStatements() { return thenStmts; } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTLiteral.java b/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTLiteral.java deleted file mode 100644 index 2074465..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTLiteral.java +++ /dev/null @@ -1,9 +0,0 @@ -package org.jcnc.snow.compiler.parser.ast; - -import org.jcnc.snow.compiler.parser.ASTExpression; - -public class ASTLiteral extends ASTExpression { - final int value; - public ASTLiteral(int value) { this.value = value; } - public int getValue() { return value; } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTLoop.java b/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTLoop.java deleted file mode 100644 index c51953b..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTLoop.java +++ /dev/null @@ -1,20 +0,0 @@ -package org.jcnc.snow.compiler.parser.ast; - -import org.jcnc.snow.compiler.parser.ASTExpression; -import org.jcnc.snow.compiler.parser.ASTStatement; - -import java.util.List; - -public class ASTLoop extends ASTStatement { - final ASTDeclare init; - final ASTExpression condition; - final ASTDeclare update; - final List body; - public ASTLoop(ASTDeclare init, ASTExpression condition, ASTDeclare update, List body) { - this.init = init; this.condition = condition; this.update = update; this.body = body; - } - public ASTDeclare getInit() { return init; } - public ASTExpression getCondition() { return condition; } - public ASTDeclare getUpdate() { return update; } - public List getBody() { return body; } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTModule.java b/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTModule.java deleted file mode 100644 index 057581d..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTModule.java +++ /dev/null @@ -1,27 +0,0 @@ -package org.jcnc.snow.compiler.parser.ast; - -import org.jcnc.snow.compiler.parser.ASTNode; - -import java.util.ArrayList; -import java.util.List; - -public class ASTModule extends ASTNode { - private final String name; - private final List functions = new ArrayList<>(); - - public ASTModule(String name) { - this.name = name; - } - - public void addFunction(ASTFunction fn) { - functions.add(fn); - } - - public String getName() { - return name; - } - - public List getFunctions() { - return functions; - } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTParameter.java b/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTParameter.java deleted file mode 100644 index 3bc4930..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTParameter.java +++ /dev/null @@ -1,10 +0,0 @@ -package org.jcnc.snow.compiler.parser.ast; - -import org.jcnc.snow.compiler.parser.ASTNode; - -public class ASTParameter extends ASTNode { - final String name, type; - public ASTParameter(String name, String type) { this.name = name; this.type = type; } - public String getName() { return name; } - public String getType() { return type; } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTReturn.java b/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTReturn.java deleted file mode 100644 index 17a01b2..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/ast/ASTReturn.java +++ /dev/null @@ -1,10 +0,0 @@ -package org.jcnc.snow.compiler.parser.ast; - -import org.jcnc.snow.compiler.parser.ASTExpression; -import org.jcnc.snow.compiler.parser.ASTStatement; - -public class ASTReturn extends ASTStatement { - final ASTExpression expr; - public ASTReturn(ASTExpression expr) { this.expr = expr; } - public ASTExpression getExpression() { return expr; } -} diff --git a/src/main/java/org/jcnc/snow/compiler/parser/utils/ASTPrinter.java b/src/main/java/org/jcnc/snow/compiler/parser/utils/ASTPrinter.java deleted file mode 100644 index a35d564..0000000 --- a/src/main/java/org/jcnc/snow/compiler/parser/utils/ASTPrinter.java +++ /dev/null @@ -1,90 +0,0 @@ -package org.jcnc.snow.compiler.parser.utils; - -import org.jcnc.snow.compiler.parser.ASTExpression; -import org.jcnc.snow.compiler.parser.ASTStatement; -import org.jcnc.snow.compiler.parser.ast.*; - -// ----------------- AST 打印工具 ----------------- -public class ASTPrinter { - private static final String INDENT = " "; - - public static void print(ASTModule module) { - System.out.println("Module: " + module.getName()); - for (ASTFunction fn : module.getFunctions()) { - printFunction(fn, 1); - } - } - - private static void printFunction(ASTFunction fn, int level) { - String indent = INDENT.repeat(level); - System.out.println(indent + "Function: " + fn.getName() + " returns " + fn.getReturnType()); - if (!fn.getParameters().isEmpty()) { - System.out.println(indent + " Parameters:"); - for (ASTParameter p : fn.getParameters()) { - System.out.println(indent + " - " + p.getName() + ": " + p.getType()); - } - } - System.out.println(indent + " Body:"); - for (ASTStatement stmt : fn.getBody()) { - printStatement(stmt, level + 2); - } - } - - private static void printStatement(ASTStatement stmt, int level) { - String indent = INDENT.repeat(level); - switch (stmt) { - case ASTReturn astReturn -> { - System.out.print(indent + "Return: "); - printExpression(astReturn.getExpression()); - System.out.println(); - } - case ASTDeclare d -> { - System.out.print(indent + "Declare " + d.getName() + ": " + d.getType()); - if (d.getInitExpression() != null) { - System.out.print(" = "); - printExpression(d.getInitExpression()); - } - System.out.println(); - } - case ASTLoop loop -> { - System.out.println(indent + "Loop:"); - System.out.print(indent + " Init: "); - printStatement(loop.getInit(), 0); - System.out.print(indent + " Condition: "); - printExpression(loop.getCondition()); - System.out.println(); - System.out.print(indent + " Update: "); - printStatement(loop.getUpdate(), 0); - System.out.println(indent + " Body:"); - for (ASTStatement s : loop.getBody()) { - printStatement(s, level + 2); - } - } - case ASTIf ifs -> { - System.out.print(indent + "If condition: "); - printExpression(ifs.getCondition()); - System.out.println(); - System.out.println(indent + " Then:"); - for (ASTStatement s : ifs.getThenStatements()) { - printStatement(s, level + 2); - } - } - default -> System.out.println(indent + stmt.getClass().getSimpleName()); - } - } - - private static void printExpression(ASTExpression expr) { - switch (expr) { - case ASTLiteral astLiteral -> System.out.print(astLiteral.getValue()); - case ASTIdentifier astIdentifier -> System.out.print(astIdentifier.getName()); - case ASTBinaryOp bin -> { - System.out.print("("); - printExpression(bin.getLeft()); - System.out.print(" " + bin.getOperator() + " "); - printExpression(bin.getRight()); - System.out.print(")"); - } - default -> System.out.print(expr.getClass().getSimpleName()); - } - } -}