38 lines
955 B
TypeScript
38 lines
955 B
TypeScript
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import chalk from "chalk"
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import {Syntax} from "./ast";
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import {format, MapLike, FormatArg} from "./util";
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export const E_TYPE_DECLARATION_NOT_FOUND = "A type declaration named '{name}' was not found."
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export const E_DECLARATION_NOT_FOUND = "Reference to an undefined declaration '{name}'.";
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export const E_TYPES_NOT_ASSIGNABLE = "Types {left} and {right} are not assignable.";
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export interface Diagnostic {
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message: string;
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severity: string;
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args?: MapLike<FormatArg>;
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node?: Syntax;
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}
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export class DiagnosticPrinter {
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public hasErrors = false;
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public add(diagnostic: Diagnostic): void {
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let out = ''
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switch (diagnostic.severity) {
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case 'error':
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this.hasErrors = true;
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out += chalk.bold.red('error: ');
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}
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if (diagnostic.args !== undefined) {
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out += format(diagnostic.message, diagnostic.args);
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} else {
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out += diagnostic.message;
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}
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process.stderr.write(out + '\n');
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}
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}
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