Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import {AbstractToken} from "../1_lexer/tokens/abstract_token";
import {INode} from "./_inode";
import {Pragma, StringToken, StringTemplate, StringTemplateBegin, StringTemplateMiddle, StringTemplateEnd, Comment} from "../1_lexer/tokens";
import {IStatementRunnable} from "../2_statements/statement_runnable";
import {AbstractNode} from "./_abstract_node";
export class ExpressionNode extends AbstractNode<ExpressionNode | TokenNode> {
private readonly expression: IStatementRunnable;
public constructor(expression: IStatementRunnable) {
super();
this.expression = expression;
}
public addChild(_n: ExpressionNode | TokenNode): void {
throw new Error("ExpressionNode: addChild() must not be called, nodes are immutable after setChildren()");
}
public get(): IStatementRunnable {
return this.expression;
}
public setChildren(children: (ExpressionNode | TokenNode)[]): ExpressionNode {
super.setChildren(children);
return this;
}
// not stored on the node, saves a field per ExpressionNode, the statement parser tracks counts itself
public countTokens(): number {
let count = 0;
for (const child of this.getChildren()) {
count = count + child.countTokens();
}
return count;
}
public getFirstToken(): AbstractToken {
for (const child of this.getChildren()) {
return child.getFirstToken();
}
throw new Error("ExpressionNode, getFirstToken, no children");
}
public concatTokensWithLinebreaks(): string {
let str = "";
let prev: AbstractToken | undefined;
for (const token of this.getTokens()) {
if (token instanceof Pragma) {
continue;
}
if (str === "") {
str = token.getStr();
} else if (prev && prev.getStr().length + prev.getCol() === token.getCol()
&& prev.getRow() === token.getRow()) {
str = str + token.getStr();
} else {
if (prev && prev.getRow() !== token.getRow()) {
str = str + "\n" + token.getStr();
} else {
str = str + " " + token.getStr();
}
}
prev = token;
}
return str;
}
public concatTokens(): string {
let str = "";
let prev: AbstractToken | undefined;
for (const token of this.getTokens()) {
if (token instanceof Pragma) {
continue;
}
if (str === "") {
str = token.getStr();
} else if (prev && prev.getStr().length + prev.getCol() === token.getCol()
&& prev.getRow() === token.getRow()) {
str = str + token.getStr();
} else {
str = str + " " + token.getStr();
}
prev = token;
}
return str;
}
public concatTokensWithoutStringsAndComments(): string {
let str = "";
let prev: AbstractToken | undefined;
for (const token of this.getTokens()) {
if (token instanceof Comment
|| token instanceof StringToken
|| token instanceof StringTemplate
|| token instanceof StringTemplateBegin
|| token instanceof StringTemplateMiddle
|| token instanceof StringTemplateEnd) {
continue;
}
if (str === "") {
str = token.getStr();
} else if (prev && prev.getStr().length + prev.getCol() === token.getCol()
&& prev.getRow() === token.getRow()) {
str = str + token.getStr();
} else {
str = str + " " + token.getStr();
}
prev = token;
}
return str;
}
// todo: delete this method?, its slow
public getTokens(): readonly AbstractToken[] {
const tokens: AbstractToken[] = [];
for (const c of this.getChildren()) {
tokens.push(...this.toTokens(c));
}
return tokens;
}
private toTokens(b: INode): readonly AbstractToken[] {
const tokens: AbstractToken[] = [];
if (b instanceof TokenNode) {
tokens.push(b.get());
return tokens;
}
for (const c of b.getChildren()) {
if (c instanceof TokenNode) {
tokens.push(c.get());
} else {
tokens.push(...this.toTokens(c));
}
}
return tokens;
}
public getLastToken(): AbstractToken {
const child = this.getLastChild();
if (child) {
return child.getLastToken();
}
throw new Error("ExpressionNode, getLastToken, no children");
}
public getAllTokens(): AbstractToken[] {
const ret: AbstractToken[] = [];
for (const child of this.getChildren()) {
if (child instanceof TokenNode) {
ret.push(child.get());
} else {
ret.push(...child.getAllTokens());
}
}
return ret;
}
public getDirectTokens(): readonly AbstractToken[] {
const ret: AbstractToken[] = [];
for (const child of this.getChildren()) {
if (child instanceof TokenNode) {
ret.push(child.get());
}
}
return ret;
}
public findDirectExpression(type: new () => IStatementRunnable): ExpressionNode | undefined {
for (const child of this.getChildren()) {
if (child instanceof ExpressionNode && child.get() instanceof type) {
return child;
}
}
return undefined;
}
public findExpressionAfterToken(text: string): ExpressionNode | undefined {
const children = this.getChildren();
for (let i = 0; i < children.length - 1; i++) {
const c = children[i];
const next = children[i + 1];
if (c instanceof TokenNode
&& c.get().getStr().toUpperCase() === text.toUpperCase()
&& next instanceof ExpressionNode) {
return next;
}
}
return undefined;
}
public findDirectExpressions(type: new () => IStatementRunnable): readonly ExpressionNode[] {
const ret: ExpressionNode[] = [];
for (const child of this.getChildren()) {
if (child instanceof ExpressionNode && child.get() instanceof type) {
ret.push(child);
}
}
return ret;
}
public findDirectExpressionsMulti(type: (new () => IStatementRunnable)[]): ExpressionNode[] {
const ret: ExpressionNode[] = [];
for (const child of this.getChildren()) {
if (child instanceof ExpressionNode) {
for (const t of type) {
if (child.get() instanceof t) {
ret.push(child);
break;
}
}
}
}
return ret;
}
public findDirectTokenByText(text: string): AbstractToken | undefined {
const search = text.toUpperCase();
for (const child of this.getChildren()) {
if (child instanceof TokenNode && child.get().getStr().toUpperCase() === search) {
return child.get();
}
}
return undefined;
}
public findAllExpressionsRecursive(type: new () => IStatementRunnable): readonly ExpressionNode[] {
const ret: ExpressionNode[] = [];
for (const child of this.getChildren()) {
if (child instanceof TokenNode) {
continue;
} else if (child.get() instanceof type) {
ret.push(child);
}
ret.push(...child.findAllExpressionsRecursive(type));
}
return ret;
}
public findAllExpressions(type: new () => IStatementRunnable): readonly ExpressionNode[] {
const ret: ExpressionNode[] = [];
for (const child of this.getChildren()) {
if (child instanceof TokenNode) {
continue;
} else if (child.get() instanceof type) {
ret.push(child);
} else {
ret.push(...child.findAllExpressions(type));
}
}
return ret;
}
public findAllExpressionsMulti(type: (new () => IStatementRunnable)[], recursive = false): ExpressionNode[] {
const ret: ExpressionNode[] = [];
for (const child of this.getChildren()) {
if (child instanceof TokenNode) {
continue;
}
const before = ret.length;
for (const t of type) {
if (child.get() instanceof t) {
ret.push(child);
}
}
if (before === ret.length || recursive === true) {
ret.push(...child.findAllExpressionsMulti(type, recursive));
}
}
return ret;
}
public findFirstExpression(type: new () => IStatementRunnable): ExpressionNode | undefined {
if (this.get() instanceof type) {
return this;
}
for (const child of this.getChildren()) {
if (child instanceof TokenNode) {
continue;
} else if (child.get() instanceof type) {
return child;
} else {
const res = child.findFirstExpression(type);
if (res) {
return res;
}
}
}
return undefined;
}
}
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