[Book] Crafting Interpreters

books/crafting-interpreters/.gitignore

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+**/ltximg/

books/crafting-interpreters/01-introduction/helloworld-c/.gitignore

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+helloworld
+helloworld.exe
+*~
+*.o

books/crafting-interpreters/01-introduction/helloworld-c/Makefile

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+SRCS    := $(wildcard *.c)
+OBJS    := $(patsubst %.c,%.o,$(SRCS))
+CC      := gcc
+CFLAGS  := -Wall -g
+OBJFLAG := -c
+OUTFLAG := -o
+
+.PHONY: all clean
+
+all: helloworld
+
+helloworld: $(OBJS)
+	$(CC) $(CFLAGS) $(OUTFLAG) $@ $^
+
+%.o: %.c
+	$(CC) $(CFLAGS) $(OUTFLAG) $@ $(OBJFLAG) $^
+
+clean:
+	rm *.o
+

books/crafting-interpreters/01-introduction/helloworld-c/list.c

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+#include "list.h"
+#include <stdlib.h>
+#include <string.h>
+
+void
+list_insert(list_node_t **list, char *string)
+{
+    list_node_t *end = *list;
+    if(end == NULL) {
+        *list = end = malloc(sizeof(list_node_t));
+        end->prev = end->next = NULL;
+    } else {
+        while(end->next != NULL)
+            end = end->next;
+        end->next = malloc(sizeof(list_node_t));
+        end->next->prev = end;
+        end->next->next = NULL;
+        end = end->next;
+    }
+
+    end->string = malloc(strlen(string) * sizeof(char));
+    strcpy(end->string, string);
+}
+
+list_node_t *
+list_find(list_node_t *list, const char *string)
+{
+    if(list == NULL) return NULL;
+    list_node_t *itr = list;
+    do {
+        if(strcmp(string, itr->string) == 0) break;
+        itr = itr->next;
+    } while(itr != NULL);
+    return itr;
+}
+
+void
+list_delete(list_node_t **node)
+{
+    if(*node == NULL) return;
+
+    list_node_t *aux = *node;
+    if(aux->prev != NULL) aux->prev->next = aux->next;
+    if(aux->next != NULL) aux->next->prev = aux->prev;
+    free(aux->string);
+    *node = aux->next;
+    free(aux);
+}

books/crafting-interpreters/01-introduction/helloworld-c/list.h

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+#ifndef LIST_H
+#define LIST_H
+
+typedef struct LIST_NODE_T {
+    char *string;
+    struct LIST_NODE_T *prev;
+    struct LIST_NODE_T *next;
+} list_node_t;
+
+void         list_insert(list_node_t **list, char *string);
+list_node_t *list_find(list_node_t *list, const char *string);
+void         list_delete(list_node_t **node);
+
+#endif

books/crafting-interpreters/01-introduction/helloworld-c/main.c

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+#include <stdio.h>
+#include "list.h"
+
+int
+main(void)
+{
+    printf("Hello, world!\n");
+
+    list_node_t *list = NULL;
+    list_insert(&list, "Hello");
+    list_insert(&list, "Cruel");
+    list_insert(&list, "World");
+
+    printf("List contents:\n");
+    for(const list_node_t *itr = list; itr != NULL; itr = itr->next) {
+        printf("  - %s\n", itr->string);
+    }
+    putchar('\n');
+
+    printf("Find word 'Cruel': ");
+    list_node_t *match = list_find(list, "Cruel");
+    printf("%s\n", (match != NULL) ? "Found" : "Not found");
+
+    printf("Remove word 'Cruel'... ");
+    list_delete(&match);
+    printf("Done\n");
+
+    printf("Find word 'World'... ");
+    match = list_find(list, "World");
+    printf("%s\n", (match != NULL) ? "Found" : "Not found");
+
+    printf("List contents backwards:\n");
+    for(const list_node_t *itr = match; itr != NULL; itr = itr->prev) {
+        printf("  - %s\n", itr->string);
+    }
+    putchar('\n');
+
+    printf("Clear list... ");
+    int i = 0;
+    while(list != NULL) {
+        list_delete(&list);
+        printf("%d... ", ++i);
+    }
+    printf("Done\n");
+
+    printf("Check if list was cleared... %s\n",
+           (list == NULL) ? "Yes" : "No");
+
+    return 0;
+}

books/crafting-interpreters/01-introduction/helloworld-java/.gitignore

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+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

books/crafting-interpreters/01-introduction/helloworld-java/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>helloworld</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>24</maven.compiler.source>
+        <maven.compiler.target>24</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+</project>

books/crafting-interpreters/01-introduction/helloworld-java/src/main/java/org/example/Main.java

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+package org.example;
+
+public class Main {
+    public static void main(String[] args) {
+        System.out.println("Hello, world!");
+    }
+}